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Commit | Line | Data |
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6973dcae JH |
1 | /* |
2 | * Copyright (C) 2005 Junio C Hamano | |
3 | */ | |
6973dcae | 4 | #include "cache.h" |
b2141fc1 | 5 | #include "config.h" |
284098f1 | 6 | #include "tempfile.h" |
6973dcae JH |
7 | #include "quote.h" |
8 | #include "diff.h" | |
9 | #include "diffcore.h" | |
051308f6 | 10 | #include "delta.h" |
6973dcae | 11 | #include "xdiff-interface.h" |
7c92fe0e | 12 | #include "color.h" |
8c701249 | 13 | #include "attr.h" |
d5535ec7 | 14 | #include "run-command.h" |
23707811 | 15 | #include "utf8.h" |
cbd53a21 | 16 | #include "object-store.h" |
be58e70d | 17 | #include "userdiff.h" |
851e18c3 | 18 | #include "submodule-config.h" |
752c0c24 | 19 | #include "submodule.h" |
2e2d5ac1 | 20 | #include "hashmap.h" |
72962e8b | 21 | #include "mem-pool.h" |
a757c646 | 22 | #include "ll-merge.h" |
02e8ca0e | 23 | #include "string-list.h" |
dbbcd44f | 24 | #include "strvec.h" |
660e113c | 25 | #include "graph.h" |
150e3001 | 26 | #include "packfile.h" |
4a288478 | 27 | #include "parse-options.h" |
3ac68a93 | 28 | #include "help.h" |
b14ed5ad | 29 | #include "promisor-remote.h" |
ad90da73 | 30 | #include "dir.h" |
95433eee | 31 | #include "strmap.h" |
6973dcae | 32 | |
1510fea7 SP |
33 | #ifdef NO_FAST_WORKING_DIRECTORY |
34 | #define FAST_WORKING_DIRECTORY 0 | |
35 | #else | |
36 | #define FAST_WORKING_DIRECTORY 1 | |
37 | #endif | |
38 | ||
96f1e58f | 39 | static int diff_detect_rename_default; |
33de7163 | 40 | static int diff_indent_heuristic = 1; |
94b82d56 | 41 | static int diff_rename_limit_default = 1000; |
a624eaa7 | 42 | static int diff_suppress_blank_empty; |
d2aea137 | 43 | static int diff_use_color_default = -1; |
2e2d5ac1 | 44 | static int diff_color_moved_default; |
626c0b5d | 45 | static int diff_color_moved_ws_default; |
6468a4e5 | 46 | static int diff_context_default = 3; |
c4888677 | 47 | static int diff_interhunk_context_default; |
98a4d87b | 48 | static const char *diff_word_regex_cfg; |
cbe02100 | 49 | static const char *external_diff_cmd_cfg; |
6d8940b5 | 50 | static const char *diff_order_file_cfg; |
aecbf914 | 51 | int diff_auto_refresh_index = 1; |
a5a818ee | 52 | static int diff_mnemonic_prefix; |
f89504dd | 53 | static int diff_no_prefix; |
c28ded83 | 54 | static int diff_relative; |
df44483a | 55 | static int diff_stat_graph_width; |
712d2c7d | 56 | static int diff_dirstat_permille_default = 30; |
be4f2b40 | 57 | static struct diff_options default_diff_options; |
07ab4dec | 58 | static long diff_algorithm; |
a17505f2 | 59 | static unsigned ws_error_highlight_default = WSEH_NEW; |
6973dcae | 60 | |
7c92fe0e | 61 | static char diff_colors[][COLOR_MAXLEN] = { |
dc6ebd4c | 62 | GIT_COLOR_RESET, |
8dbf3eb6 | 63 | GIT_COLOR_NORMAL, /* CONTEXT */ |
dc6ebd4c AL |
64 | GIT_COLOR_BOLD, /* METAINFO */ |
65 | GIT_COLOR_CYAN, /* FRAGINFO */ | |
66 | GIT_COLOR_RED, /* OLD */ | |
67 | GIT_COLOR_GREEN, /* NEW */ | |
68 | GIT_COLOR_YELLOW, /* COMMIT */ | |
69 | GIT_COLOR_BG_RED, /* WHITESPACE */ | |
89cb73a1 | 70 | GIT_COLOR_NORMAL, /* FUNCINFO */ |
86b452e2 SB |
71 | GIT_COLOR_BOLD_MAGENTA, /* OLD_MOVED */ |
72 | GIT_COLOR_BOLD_BLUE, /* OLD_MOVED ALTERNATIVE */ | |
73 | GIT_COLOR_FAINT, /* OLD_MOVED_DIM */ | |
74 | GIT_COLOR_FAINT_ITALIC, /* OLD_MOVED_ALTERNATIVE_DIM */ | |
75 | GIT_COLOR_BOLD_CYAN, /* NEW_MOVED */ | |
76 | GIT_COLOR_BOLD_YELLOW, /* NEW_MOVED ALTERNATIVE */ | |
77 | GIT_COLOR_FAINT, /* NEW_MOVED_DIM */ | |
78 | GIT_COLOR_FAINT_ITALIC, /* NEW_MOVED_ALTERNATIVE_DIM */ | |
a7be92ac JS |
79 | GIT_COLOR_FAINT, /* CONTEXT_DIM */ |
80 | GIT_COLOR_FAINT_RED, /* OLD_DIM */ | |
81 | GIT_COLOR_FAINT_GREEN, /* NEW_DIM */ | |
82 | GIT_COLOR_BOLD, /* CONTEXT_BOLD */ | |
83 | GIT_COLOR_BOLD_RED, /* OLD_BOLD */ | |
84 | GIT_COLOR_BOLD_GREEN, /* NEW_BOLD */ | |
cd112cef JS |
85 | }; |
86 | ||
a73b3680 NTND |
87 | static const char *color_diff_slots[] = { |
88 | [DIFF_CONTEXT] = "context", | |
89 | [DIFF_METAINFO] = "meta", | |
90 | [DIFF_FRAGINFO] = "frag", | |
91 | [DIFF_FILE_OLD] = "old", | |
92 | [DIFF_FILE_NEW] = "new", | |
93 | [DIFF_COMMIT] = "commit", | |
94 | [DIFF_WHITESPACE] = "whitespace", | |
95 | [DIFF_FUNCINFO] = "func", | |
96 | [DIFF_FILE_OLD_MOVED] = "oldMoved", | |
97 | [DIFF_FILE_OLD_MOVED_ALT] = "oldMovedAlternative", | |
98 | [DIFF_FILE_OLD_MOVED_DIM] = "oldMovedDimmed", | |
99 | [DIFF_FILE_OLD_MOVED_ALT_DIM] = "oldMovedAlternativeDimmed", | |
100 | [DIFF_FILE_NEW_MOVED] = "newMoved", | |
101 | [DIFF_FILE_NEW_MOVED_ALT] = "newMovedAlternative", | |
102 | [DIFF_FILE_NEW_MOVED_DIM] = "newMovedDimmed", | |
103 | [DIFF_FILE_NEW_MOVED_ALT_DIM] = "newMovedAlternativeDimmed", | |
a7be92ac JS |
104 | [DIFF_CONTEXT_DIM] = "contextDimmed", |
105 | [DIFF_FILE_OLD_DIM] = "oldDimmed", | |
106 | [DIFF_FILE_NEW_DIM] = "newDimmed", | |
107 | [DIFF_CONTEXT_BOLD] = "contextBold", | |
108 | [DIFF_FILE_OLD_BOLD] = "oldBold", | |
109 | [DIFF_FILE_NEW_BOLD] = "newBold", | |
a73b3680 NTND |
110 | }; |
111 | ||
3ac68a93 NTND |
112 | define_list_config_array_extra(color_diff_slots, {"plain"}); |
113 | ||
9e1a5ebe | 114 | static int parse_diff_color_slot(const char *var) |
801235c5 | 115 | { |
a73b3680 | 116 | if (!strcasecmp(var, "plain")) |
8dbf3eb6 | 117 | return DIFF_CONTEXT; |
a73b3680 | 118 | return LOOKUP_CONFIG(color_diff_slots, var); |
801235c5 JH |
119 | } |
120 | ||
02e8ca0e | 121 | static int parse_dirstat_params(struct diff_options *options, const char *params_string, |
51670fc8 | 122 | struct strbuf *errmsg) |
333f3fb0 | 123 | { |
02e8ca0e MH |
124 | char *params_copy = xstrdup(params_string); |
125 | struct string_list params = STRING_LIST_INIT_NODUP; | |
126 | int ret = 0; | |
127 | int i; | |
51670fc8 | 128 | |
02e8ca0e MH |
129 | if (*params_copy) |
130 | string_list_split_in_place(¶ms, params_copy, ',', -1); | |
131 | for (i = 0; i < params.nr; i++) { | |
132 | const char *p = params.items[i].string; | |
133 | if (!strcmp(p, "changes")) { | |
0d1e0e78 BW |
134 | options->flags.dirstat_by_line = 0; |
135 | options->flags.dirstat_by_file = 0; | |
02e8ca0e | 136 | } else if (!strcmp(p, "lines")) { |
0d1e0e78 BW |
137 | options->flags.dirstat_by_line = 1; |
138 | options->flags.dirstat_by_file = 0; | |
02e8ca0e | 139 | } else if (!strcmp(p, "files")) { |
0d1e0e78 BW |
140 | options->flags.dirstat_by_line = 0; |
141 | options->flags.dirstat_by_file = 1; | |
02e8ca0e | 142 | } else if (!strcmp(p, "noncumulative")) { |
0d1e0e78 | 143 | options->flags.dirstat_cumulative = 0; |
02e8ca0e | 144 | } else if (!strcmp(p, "cumulative")) { |
0d1e0e78 | 145 | options->flags.dirstat_cumulative = 1; |
333f3fb0 JH |
146 | } else if (isdigit(*p)) { |
147 | char *end; | |
51670fc8 JH |
148 | int permille = strtoul(p, &end, 10) * 10; |
149 | if (*end == '.' && isdigit(*++end)) { | |
712d2c7d | 150 | /* only use first digit */ |
51670fc8 | 151 | permille += *end - '0'; |
712d2c7d | 152 | /* .. and ignore any further digits */ |
51670fc8 | 153 | while (isdigit(*++end)) |
712d2c7d JH |
154 | ; /* nothing */ |
155 | } | |
02e8ca0e | 156 | if (!*end) |
51670fc8 JH |
157 | options->dirstat_permille = permille; |
158 | else { | |
02e8ca0e MH |
159 | strbuf_addf(errmsg, _(" Failed to parse dirstat cut-off percentage '%s'\n"), |
160 | p); | |
51670fc8 JH |
161 | ret++; |
162 | } | |
163 | } else { | |
02e8ca0e | 164 | strbuf_addf(errmsg, _(" Unknown dirstat parameter '%s'\n"), p); |
51670fc8 | 165 | ret++; |
333f3fb0 | 166 | } |
51670fc8 | 167 | |
333f3fb0 | 168 | } |
02e8ca0e MH |
169 | string_list_clear(¶ms, 0); |
170 | free(params_copy); | |
51670fc8 | 171 | return ret; |
333f3fb0 JH |
172 | } |
173 | ||
c47ef57c RR |
174 | static int parse_submodule_params(struct diff_options *options, const char *value) |
175 | { | |
176 | if (!strcmp(value, "log")) | |
61cfbc05 | 177 | options->submodule_format = DIFF_SUBMODULE_LOG; |
c47ef57c | 178 | else if (!strcmp(value, "short")) |
61cfbc05 | 179 | options->submodule_format = DIFF_SUBMODULE_SHORT; |
fd47ae6a JK |
180 | else if (!strcmp(value, "diff")) |
181 | options->submodule_format = DIFF_SUBMODULE_INLINE_DIFF; | |
5a59a230 NTND |
182 | /* |
183 | * Please update $__git_diff_submodule_formats in | |
184 | * git-completion.bash when you add new formats. | |
185 | */ | |
c47ef57c RR |
186 | else |
187 | return -1; | |
188 | return 0; | |
189 | } | |
190 | ||
85b46030 | 191 | int git_config_rename(const char *var, const char *value) |
cced5fbc LT |
192 | { |
193 | if (!value) | |
194 | return DIFF_DETECT_RENAME; | |
195 | if (!strcasecmp(value, "copies") || !strcasecmp(value, "copy")) | |
196 | return DIFF_DETECT_COPY; | |
197 | return git_config_bool(var,value) ? DIFF_DETECT_RENAME : 0; | |
198 | } | |
199 | ||
07924d4d | 200 | long parse_algorithm_value(const char *value) |
07ab4dec MP |
201 | { |
202 | if (!value) | |
203 | return -1; | |
204 | else if (!strcasecmp(value, "myers") || !strcasecmp(value, "default")) | |
205 | return 0; | |
206 | else if (!strcasecmp(value, "minimal")) | |
207 | return XDF_NEED_MINIMAL; | |
208 | else if (!strcasecmp(value, "patience")) | |
209 | return XDF_PATIENCE_DIFF; | |
210 | else if (!strcasecmp(value, "histogram")) | |
211 | return XDF_HISTOGRAM_DIFF; | |
5a59a230 NTND |
212 | /* |
213 | * Please update $__git_diff_algorithms in git-completion.bash | |
214 | * when you add new algorithms. | |
215 | */ | |
07ab4dec MP |
216 | return -1; |
217 | } | |
218 | ||
0b4b42e7 JH |
219 | static int parse_one_token(const char **arg, const char *token) |
220 | { | |
221 | const char *rest; | |
222 | if (skip_prefix(*arg, token, &rest) && (!*rest || *rest == ',')) { | |
223 | *arg = rest; | |
224 | return 1; | |
225 | } | |
226 | return 0; | |
227 | } | |
228 | ||
229 | static int parse_ws_error_highlight(const char *arg) | |
230 | { | |
231 | const char *orig_arg = arg; | |
232 | unsigned val = 0; | |
233 | ||
234 | while (*arg) { | |
235 | if (parse_one_token(&arg, "none")) | |
236 | val = 0; | |
237 | else if (parse_one_token(&arg, "default")) | |
238 | val = WSEH_NEW; | |
239 | else if (parse_one_token(&arg, "all")) | |
240 | val = WSEH_NEW | WSEH_OLD | WSEH_CONTEXT; | |
241 | else if (parse_one_token(&arg, "new")) | |
242 | val |= WSEH_NEW; | |
243 | else if (parse_one_token(&arg, "old")) | |
244 | val |= WSEH_OLD; | |
245 | else if (parse_one_token(&arg, "context")) | |
246 | val |= WSEH_CONTEXT; | |
247 | else { | |
248 | return -1 - (int)(arg - orig_arg); | |
249 | } | |
250 | if (*arg) | |
251 | arg++; | |
252 | } | |
253 | return val; | |
254 | } | |
255 | ||
83ad63cf JH |
256 | /* |
257 | * These are to give UI layer defaults. | |
258 | * The core-level commands such as git-diff-files should | |
259 | * never be affected by the setting of diff.renames | |
260 | * the user happens to have in the configuration file. | |
261 | */ | |
5404c116 MM |
262 | void init_diff_ui_defaults(void) |
263 | { | |
06dba2b0 | 264 | diff_detect_rename_default = DIFF_DETECT_RENAME; |
5404c116 MM |
265 | } |
266 | ||
783a86c1 | 267 | int git_diff_heuristic_config(const char *var, const char *value, |
5cf88fd8 | 268 | void *cb UNUSED) |
5b162879 | 269 | { |
3cde4e02 | 270 | if (!strcmp(var, "diff.indentheuristic")) |
5b162879 | 271 | diff_indent_heuristic = git_config_bool(var, value); |
5b162879 MH |
272 | return 0; |
273 | } | |
274 | ||
2e2d5ac1 SB |
275 | static int parse_color_moved(const char *arg) |
276 | { | |
277 | switch (git_parse_maybe_bool(arg)) { | |
278 | case 0: | |
279 | return COLOR_MOVED_NO; | |
280 | case 1: | |
281 | return COLOR_MOVED_DEFAULT; | |
282 | default: | |
283 | break; | |
284 | } | |
285 | ||
286 | if (!strcmp(arg, "no")) | |
287 | return COLOR_MOVED_NO; | |
176841f0 SB |
288 | else if (!strcmp(arg, "plain")) |
289 | return COLOR_MOVED_PLAIN; | |
51da15eb SB |
290 | else if (!strcmp(arg, "blocks")) |
291 | return COLOR_MOVED_BLOCKS; | |
2e2d5ac1 SB |
292 | else if (!strcmp(arg, "zebra")) |
293 | return COLOR_MOVED_ZEBRA; | |
294 | else if (!strcmp(arg, "default")) | |
295 | return COLOR_MOVED_DEFAULT; | |
e3f2f5f9 ES |
296 | else if (!strcmp(arg, "dimmed-zebra")) |
297 | return COLOR_MOVED_ZEBRA_DIM; | |
86b452e2 SB |
298 | else if (!strcmp(arg, "dimmed_zebra")) |
299 | return COLOR_MOVED_ZEBRA_DIM; | |
2e2d5ac1 | 300 | else |
706b0b5e | 301 | return error(_("color moved setting must be one of 'no', 'default', 'blocks', 'zebra', 'dimmed-zebra', 'plain'")); |
2e2d5ac1 SB |
302 | } |
303 | ||
d173e799 | 304 | static unsigned parse_color_moved_ws(const char *arg) |
b3095712 SB |
305 | { |
306 | int ret = 0; | |
307 | struct string_list l = STRING_LIST_INIT_DUP; | |
308 | struct string_list_item *i; | |
309 | ||
310 | string_list_split(&l, arg, ',', -1); | |
311 | ||
312 | for_each_string_list_item(i, &l) { | |
313 | struct strbuf sb = STRBUF_INIT; | |
314 | strbuf_addstr(&sb, i->string); | |
315 | strbuf_trim(&sb); | |
316 | ||
b73bcbac PW |
317 | if (!strcmp(sb.buf, "no")) |
318 | ret = 0; | |
319 | else if (!strcmp(sb.buf, "ignore-space-change")) | |
b3095712 SB |
320 | ret |= XDF_IGNORE_WHITESPACE_CHANGE; |
321 | else if (!strcmp(sb.buf, "ignore-space-at-eol")) | |
322 | ret |= XDF_IGNORE_WHITESPACE_AT_EOL; | |
323 | else if (!strcmp(sb.buf, "ignore-all-space")) | |
324 | ret |= XDF_IGNORE_WHITESPACE; | |
ca1f4ae4 SB |
325 | else if (!strcmp(sb.buf, "allow-indentation-change")) |
326 | ret |= COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE; | |
d173e799 SB |
327 | else { |
328 | ret |= COLOR_MOVED_WS_ERROR; | |
329 | error(_("unknown color-moved-ws mode '%s', possible values are 'ignore-space-change', 'ignore-space-at-eol', 'ignore-all-space', 'allow-indentation-change'"), sb.buf); | |
330 | } | |
b3095712 SB |
331 | |
332 | strbuf_release(&sb); | |
333 | } | |
334 | ||
ca1f4ae4 | 335 | if ((ret & COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE) && |
d173e799 | 336 | (ret & XDF_WHITESPACE_FLAGS)) { |
15b07cba | 337 | error(_("color-moved-ws: allow-indentation-change cannot be combined with other whitespace modes")); |
d173e799 SB |
338 | ret |= COLOR_MOVED_WS_ERROR; |
339 | } | |
ca1f4ae4 | 340 | |
b3095712 SB |
341 | string_list_clear(&l, 0); |
342 | ||
343 | return ret; | |
2e2d5ac1 SB |
344 | } |
345 | ||
ef90d6d4 | 346 | int git_diff_ui_config(const char *var, const char *value, void *cb) |
801235c5 | 347 | { |
a159ca0c | 348 | if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) { |
e269eb79 | 349 | diff_use_color_default = git_config_colorbool(var, value); |
801235c5 JH |
350 | return 0; |
351 | } | |
2e2d5ac1 SB |
352 | if (!strcmp(var, "diff.colormoved")) { |
353 | int cm = parse_color_moved(value); | |
354 | if (cm < 0) | |
355 | return -1; | |
356 | diff_color_moved_default = cm; | |
357 | return 0; | |
358 | } | |
626c0b5d | 359 | if (!strcmp(var, "diff.colormovedws")) { |
d173e799 SB |
360 | unsigned cm = parse_color_moved_ws(value); |
361 | if (cm & COLOR_MOVED_WS_ERROR) | |
626c0b5d SB |
362 | return -1; |
363 | diff_color_moved_ws_default = cm; | |
364 | return 0; | |
365 | } | |
6468a4e5 JM |
366 | if (!strcmp(var, "diff.context")) { |
367 | diff_context_default = git_config_int(var, value); | |
368 | if (diff_context_default < 0) | |
369 | return -1; | |
370 | return 0; | |
371 | } | |
c4888677 VN |
372 | if (!strcmp(var, "diff.interhunkcontext")) { |
373 | diff_interhunk_context_default = git_config_int(var, value); | |
374 | if (diff_interhunk_context_default < 0) | |
375 | return -1; | |
376 | return 0; | |
377 | } | |
b68ea12e | 378 | if (!strcmp(var, "diff.renames")) { |
cced5fbc | 379 | diff_detect_rename_default = git_config_rename(var, value); |
b68ea12e EW |
380 | return 0; |
381 | } | |
aecbf914 JH |
382 | if (!strcmp(var, "diff.autorefreshindex")) { |
383 | diff_auto_refresh_index = git_config_bool(var, value); | |
384 | return 0; | |
385 | } | |
a5a818ee JH |
386 | if (!strcmp(var, "diff.mnemonicprefix")) { |
387 | diff_mnemonic_prefix = git_config_bool(var, value); | |
388 | return 0; | |
389 | } | |
f89504dd EC |
390 | if (!strcmp(var, "diff.noprefix")) { |
391 | diff_no_prefix = git_config_bool(var, value); | |
392 | return 0; | |
393 | } | |
c28ded83 LA |
394 | if (!strcmp(var, "diff.relative")) { |
395 | diff_relative = git_config_bool(var, value); | |
396 | return 0; | |
397 | } | |
df44483a ZJS |
398 | if (!strcmp(var, "diff.statgraphwidth")) { |
399 | diff_stat_graph_width = git_config_int(var, value); | |
400 | return 0; | |
401 | } | |
daec808c BH |
402 | if (!strcmp(var, "diff.external")) |
403 | return git_config_string(&external_diff_cmd_cfg, var, value); | |
98a4d87b BSSJ |
404 | if (!strcmp(var, "diff.wordregex")) |
405 | return git_config_string(&diff_word_regex_cfg, var, value); | |
6d8940b5 SB |
406 | if (!strcmp(var, "diff.orderfile")) |
407 | return git_config_pathname(&diff_order_file_cfg, var, value); | |
f1af60bd | 408 | |
be4f2b40 JS |
409 | if (!strcmp(var, "diff.ignoresubmodules")) |
410 | handle_ignore_submodules_arg(&default_diff_options, value); | |
411 | ||
c47ef57c RR |
412 | if (!strcmp(var, "diff.submodule")) { |
413 | if (parse_submodule_params(&default_diff_options, value)) | |
414 | warning(_("Unknown value for 'diff.submodule' config variable: '%s'"), | |
415 | value); | |
416 | return 0; | |
417 | } | |
418 | ||
07ab4dec MP |
419 | if (!strcmp(var, "diff.algorithm")) { |
420 | diff_algorithm = parse_algorithm_value(value); | |
421 | if (diff_algorithm < 0) | |
422 | return -1; | |
423 | return 0; | |
424 | } | |
425 | ||
33c643bb JK |
426 | if (git_color_config(var, value, cb) < 0) |
427 | return -1; | |
428 | ||
ef90d6d4 | 429 | return git_diff_basic_config(var, value, cb); |
9a1805a8 JK |
430 | } |
431 | ||
ef90d6d4 | 432 | int git_diff_basic_config(const char *var, const char *value, void *cb) |
9a1805a8 | 433 | { |
ae021d87 JK |
434 | const char *name; |
435 | ||
2b6ca6df LT |
436 | if (!strcmp(var, "diff.renamelimit")) { |
437 | diff_rename_limit_default = git_config_int(var, value); | |
438 | return 0; | |
439 | } | |
440 | ||
6680a087 JK |
441 | if (userdiff_config(var, value) < 0) |
442 | return -1; | |
c7534ef4 | 443 | |
ae021d87 JK |
444 | if (skip_prefix(var, "diff.color.", &name) || |
445 | skip_prefix(var, "color.diff.", &name)) { | |
446 | int slot = parse_diff_color_slot(name); | |
8b8e8624 JK |
447 | if (slot < 0) |
448 | return 0; | |
64f30e94 JH |
449 | if (!value) |
450 | return config_error_nonbool(var); | |
f6c5a296 | 451 | return color_parse(value, diff_colors[slot]); |
801235c5 | 452 | } |
f1af60bd | 453 | |
da806352 JK |
454 | if (!strcmp(var, "diff.wserrorhighlight")) { |
455 | int val = parse_ws_error_highlight(value); | |
456 | if (val < 0) | |
457 | return -1; | |
458 | ws_error_highlight_default = val; | |
459 | return 0; | |
460 | } | |
461 | ||
a624eaa7 | 462 | /* like GNU diff's --suppress-blank-empty option */ |
950db879 JS |
463 | if (!strcmp(var, "diff.suppressblankempty") || |
464 | /* for backwards compatibility */ | |
465 | !strcmp(var, "diff.suppress-blank-empty")) { | |
a624eaa7 JM |
466 | diff_suppress_blank_empty = git_config_bool(var, value); |
467 | return 0; | |
468 | } | |
469 | ||
2d174951 | 470 | if (!strcmp(var, "diff.dirstat")) { |
51670fc8 | 471 | struct strbuf errmsg = STRBUF_INIT; |
712d2c7d | 472 | default_diff_options.dirstat_permille = diff_dirstat_permille_default; |
51670fc8 | 473 | if (parse_dirstat_params(&default_diff_options, value, &errmsg)) |
7478ac57 | 474 | warning(_("Found errors in 'diff.dirstat' config variable:\n%s"), |
51670fc8 JH |
475 | errmsg.buf); |
476 | strbuf_release(&errmsg); | |
712d2c7d | 477 | diff_dirstat_permille_default = default_diff_options.dirstat_permille; |
2d174951 JH |
478 | return 0; |
479 | } | |
480 | ||
cf5e7722 MB |
481 | if (git_diff_heuristic_config(var, value, cb) < 0) |
482 | return -1; | |
483 | ||
3e1dd17a | 484 | return git_default_config(var, value, cb); |
801235c5 JH |
485 | } |
486 | ||
6973dcae JH |
487 | static char *quote_two(const char *one, const char *two) |
488 | { | |
7c37c975 JH |
489 | int need_one = quote_c_style(one, NULL, NULL, CQUOTE_NODQ); |
490 | int need_two = quote_c_style(two, NULL, NULL, CQUOTE_NODQ); | |
f285a2d7 | 491 | struct strbuf res = STRBUF_INIT; |
6973dcae JH |
492 | |
493 | if (need_one + need_two) { | |
663af342 | 494 | strbuf_addch(&res, '"'); |
7c37c975 JH |
495 | quote_c_style(one, &res, NULL, CQUOTE_NODQ); |
496 | quote_c_style(two, &res, NULL, CQUOTE_NODQ); | |
663af342 PH |
497 | strbuf_addch(&res, '"'); |
498 | } else { | |
499 | strbuf_addstr(&res, one); | |
500 | strbuf_addstr(&res, two); | |
6973dcae | 501 | } |
b315c5c0 | 502 | return strbuf_detach(&res, NULL); |
6973dcae JH |
503 | } |
504 | ||
505 | static const char *external_diff(void) | |
506 | { | |
507 | static const char *external_diff_cmd = NULL; | |
508 | static int done_preparing = 0; | |
509 | ||
510 | if (done_preparing) | |
511 | return external_diff_cmd; | |
6776a84d | 512 | external_diff_cmd = xstrdup_or_null(getenv("GIT_EXTERNAL_DIFF")); |
cbe02100 JS |
513 | if (!external_diff_cmd) |
514 | external_diff_cmd = external_diff_cmd_cfg; | |
6973dcae JH |
515 | done_preparing = 1; |
516 | return external_diff_cmd; | |
517 | } | |
518 | ||
284098f1 MH |
519 | /* |
520 | * Keep track of files used for diffing. Sometimes such an entry | |
521 | * refers to a temporary file, sometimes to an existing file, and | |
522 | * sometimes to "/dev/null". | |
523 | */ | |
6973dcae | 524 | static struct diff_tempfile { |
284098f1 MH |
525 | /* |
526 | * filename external diff should read from, or NULL if this | |
527 | * entry is currently not in use: | |
528 | */ | |
529 | const char *name; | |
530 | ||
dc01505f | 531 | char hex[GIT_MAX_HEXSZ + 1]; |
6973dcae | 532 | char mode[10]; |
284098f1 MH |
533 | |
534 | /* | |
535 | * If this diff_tempfile instance refers to a temporary file, | |
536 | * this tempfile object is used to manage its lifetime. | |
537 | */ | |
076aa2cb | 538 | struct tempfile *tempfile; |
6973dcae JH |
539 | } diff_temp[2]; |
540 | ||
6957eb9a | 541 | struct emit_callback { |
6957eb9a JH |
542 | int color_diff; |
543 | unsigned ws_rule; | |
544 | int blank_at_eof_in_preimage; | |
545 | int blank_at_eof_in_postimage; | |
546 | int lno_in_preimage; | |
547 | int lno_in_postimage; | |
6957eb9a JH |
548 | const char **label_path; |
549 | struct diff_words_data *diff_words; | |
a3c158d4 | 550 | struct diff_options *opt; |
3e97c7c6 | 551 | struct strbuf *header; |
6957eb9a JH |
552 | }; |
553 | ||
6973dcae JH |
554 | static int count_lines(const char *data, int size) |
555 | { | |
556 | int count, ch, completely_empty = 1, nl_just_seen = 0; | |
557 | count = 0; | |
558 | while (0 < size--) { | |
559 | ch = *data++; | |
560 | if (ch == '\n') { | |
561 | count++; | |
562 | nl_just_seen = 1; | |
563 | completely_empty = 0; | |
564 | } | |
565 | else { | |
566 | nl_just_seen = 0; | |
567 | completely_empty = 0; | |
568 | } | |
569 | } | |
570 | if (completely_empty) | |
571 | return 0; | |
572 | if (!nl_just_seen) | |
573 | count++; /* no trailing newline */ | |
574 | return count; | |
575 | } | |
576 | ||
b78ea5fc NTND |
577 | static int fill_mmfile(struct repository *r, mmfile_t *mf, |
578 | struct diff_filespec *one) | |
6957eb9a JH |
579 | { |
580 | if (!DIFF_FILE_VALID(one)) { | |
581 | mf->ptr = (char *)""; /* does not matter */ | |
582 | mf->size = 0; | |
583 | return 0; | |
584 | } | |
1c37e86a | 585 | else if (diff_populate_filespec(r, one, NULL)) |
6957eb9a | 586 | return -1; |
bb35fefb | 587 | |
6957eb9a JH |
588 | mf->ptr = one->data; |
589 | mf->size = one->size; | |
590 | return 0; | |
591 | } | |
592 | ||
abb371a1 | 593 | /* like fill_mmfile, but only for size, so we can avoid retrieving blob */ |
b78ea5fc NTND |
594 | static unsigned long diff_filespec_size(struct repository *r, |
595 | struct diff_filespec *one) | |
abb371a1 | 596 | { |
1c37e86a JT |
597 | struct diff_populate_filespec_options dpf_options = { |
598 | .check_size_only = 1, | |
599 | }; | |
600 | ||
abb371a1 JK |
601 | if (!DIFF_FILE_VALID(one)) |
602 | return 0; | |
1c37e86a | 603 | diff_populate_filespec(r, one, &dpf_options); |
abb371a1 JK |
604 | return one->size; |
605 | } | |
606 | ||
6957eb9a JH |
607 | static int count_trailing_blank(mmfile_t *mf, unsigned ws_rule) |
608 | { | |
609 | char *ptr = mf->ptr; | |
610 | long size = mf->size; | |
611 | int cnt = 0; | |
612 | ||
613 | if (!size) | |
614 | return cnt; | |
615 | ptr += size - 1; /* pointing at the very end */ | |
616 | if (*ptr != '\n') | |
617 | ; /* incomplete line */ | |
618 | else | |
619 | ptr--; /* skip the last LF */ | |
620 | while (mf->ptr < ptr) { | |
621 | char *prev_eol; | |
622 | for (prev_eol = ptr; mf->ptr <= prev_eol; prev_eol--) | |
623 | if (*prev_eol == '\n') | |
624 | break; | |
625 | if (!ws_blank_line(prev_eol + 1, ptr - prev_eol, ws_rule)) | |
626 | break; | |
627 | cnt++; | |
628 | ptr = prev_eol - 1; | |
629 | } | |
630 | return cnt; | |
631 | } | |
632 | ||
633 | static void check_blank_at_eof(mmfile_t *mf1, mmfile_t *mf2, | |
634 | struct emit_callback *ecbdata) | |
635 | { | |
636 | int l1, l2, at; | |
637 | unsigned ws_rule = ecbdata->ws_rule; | |
638 | l1 = count_trailing_blank(mf1, ws_rule); | |
639 | l2 = count_trailing_blank(mf2, ws_rule); | |
640 | if (l2 <= l1) { | |
641 | ecbdata->blank_at_eof_in_preimage = 0; | |
642 | ecbdata->blank_at_eof_in_postimage = 0; | |
643 | return; | |
644 | } | |
645 | at = count_lines(mf1->ptr, mf1->size); | |
646 | ecbdata->blank_at_eof_in_preimage = (at - l1) + 1; | |
647 | ||
648 | at = count_lines(mf2->ptr, mf2->size); | |
649 | ecbdata->blank_at_eof_in_postimage = (at - l2) + 1; | |
650 | } | |
651 | ||
f7c3b4e2 | 652 | static void emit_line_0(struct diff_options *o, |
017ac45e | 653 | const char *set_sign, const char *set, unsigned reverse, const char *reset, |
250f7993 | 654 | int first, const char *line, int len) |
6957eb9a JH |
655 | { |
656 | int has_trailing_newline, has_trailing_carriage_return; | |
44410679 | 657 | int needs_reset = 0; /* at the end of the line */ |
a3c158d4 BY |
658 | FILE *file = o->file; |
659 | ||
f103a6fa | 660 | fputs(diff_line_prefix(o), file); |
6957eb9a | 661 | |
44410679 SB |
662 | has_trailing_newline = (len > 0 && line[len-1] == '\n'); |
663 | if (has_trailing_newline) | |
664 | len--; | |
665 | ||
666 | has_trailing_carriage_return = (len > 0 && line[len-1] == '\r'); | |
667 | if (has_trailing_carriage_return) | |
668 | len--; | |
669 | ||
670 | if (!len && !first) | |
671 | goto end_of_line; | |
672 | ||
673 | if (reverse && want_color(o->use_color)) { | |
674 | fputs(GIT_COLOR_REVERSE, file); | |
675 | needs_reset = 1; | |
250f7993 | 676 | } |
6957eb9a | 677 | |
44410679 SB |
678 | if (set_sign) { |
679 | fputs(set_sign, file); | |
680 | needs_reset = 1; | |
06a47552 | 681 | } |
44410679 SB |
682 | |
683 | if (first) | |
684 | fputc(first, file); | |
685 | ||
686 | if (!len) | |
687 | goto end_of_line; | |
688 | ||
689 | if (set) { | |
690 | if (set_sign && set != set_sign) | |
691 | fputs(reset, file); | |
06a47552 | 692 | fputs(set, file); |
44410679 | 693 | needs_reset = 1; |
06a47552 | 694 | } |
44410679 SB |
695 | fwrite(line, len, 1, file); |
696 | needs_reset = 1; /* 'line' may contain color codes. */ | |
697 | ||
698 | end_of_line: | |
699 | if (needs_reset) | |
700 | fputs(reset, file); | |
6957eb9a JH |
701 | if (has_trailing_carriage_return) |
702 | fputc('\r', file); | |
703 | if (has_trailing_newline) | |
704 | fputc('\n', file); | |
705 | } | |
706 | ||
a3c158d4 | 707 | static void emit_line(struct diff_options *o, const char *set, const char *reset, |
250f7993 JH |
708 | const char *line, int len) |
709 | { | |
44410679 | 710 | emit_line_0(o, set, NULL, 0, reset, 0, line, len); |
250f7993 JH |
711 | } |
712 | ||
36a4cefd | 713 | enum diff_symbol { |
4eed0ebd SB |
714 | DIFF_SYMBOL_BINARY_DIFF_HEADER, |
715 | DIFF_SYMBOL_BINARY_DIFF_HEADER_DELTA, | |
716 | DIFF_SYMBOL_BINARY_DIFF_HEADER_LITERAL, | |
717 | DIFF_SYMBOL_BINARY_DIFF_BODY, | |
718 | DIFF_SYMBOL_BINARY_DIFF_FOOTER, | |
0911c475 SB |
719 | DIFF_SYMBOL_STATS_SUMMARY_NO_FILES, |
720 | DIFF_SYMBOL_STATS_SUMMARY_ABBREV, | |
721 | DIFF_SYMBOL_STATS_SUMMARY_INSERTS_DELETES, | |
722 | DIFF_SYMBOL_STATS_LINE, | |
bd033291 | 723 | DIFF_SYMBOL_WORD_DIFF, |
30b7e1e7 | 724 | DIFF_SYMBOL_STAT_SEP, |
146fdb0d | 725 | DIFF_SYMBOL_SUMMARY, |
f3597138 SB |
726 | DIFF_SYMBOL_SUBMODULE_ADD, |
727 | DIFF_SYMBOL_SUBMODULE_DEL, | |
728 | DIFF_SYMBOL_SUBMODULE_UNTRACKED, | |
729 | DIFF_SYMBOL_SUBMODULE_MODIFIED, | |
730 | DIFF_SYMBOL_SUBMODULE_HEADER, | |
731 | DIFF_SYMBOL_SUBMODULE_ERROR, | |
732 | DIFF_SYMBOL_SUBMODULE_PIPETHROUGH, | |
5af6ea95 | 733 | DIFF_SYMBOL_REWRITE_DIFF, |
4acaaa7a | 734 | DIFF_SYMBOL_BINARY_FILES, |
a29b0a13 | 735 | DIFF_SYMBOL_HEADER, |
3ee8b7bf SB |
736 | DIFF_SYMBOL_FILEPAIR_PLUS, |
737 | DIFF_SYMBOL_FILEPAIR_MINUS, | |
ff958679 SB |
738 | DIFF_SYMBOL_WORDS_PORCELAIN, |
739 | DIFF_SYMBOL_WORDS, | |
091f8e28 | 740 | DIFF_SYMBOL_CONTEXT, |
f2bb1218 | 741 | DIFF_SYMBOL_CONTEXT_INCOMPLETE, |
091f8e28 SB |
742 | DIFF_SYMBOL_PLUS, |
743 | DIFF_SYMBOL_MINUS, | |
b9cbfde6 | 744 | DIFF_SYMBOL_NO_LF_EOF, |
68abc6f1 | 745 | DIFF_SYMBOL_CONTEXT_FRAGINFO, |
c64b420b | 746 | DIFF_SYMBOL_CONTEXT_MARKER, |
36a4cefd SB |
747 | DIFF_SYMBOL_SEPARATOR |
748 | }; | |
091f8e28 SB |
749 | /* |
750 | * Flags for content lines: | |
751 | * 0..12 are whitespace rules | |
752 | * 13-15 are WSEH_NEW | WSEH_OLD | WSEH_CONTEXT | |
753 | * 16 is marking if the line is blank at EOF | |
754 | */ | |
2e2d5ac1 SB |
755 | #define DIFF_SYMBOL_CONTENT_BLANK_LINE_EOF (1<<16) |
756 | #define DIFF_SYMBOL_MOVED_LINE (1<<17) | |
757 | #define DIFF_SYMBOL_MOVED_LINE_ALT (1<<18) | |
86b452e2 | 758 | #define DIFF_SYMBOL_MOVED_LINE_UNINTERESTING (1<<19) |
091f8e28 SB |
759 | #define DIFF_SYMBOL_CONTENT_WS_MASK (WSEH_NEW | WSEH_OLD | WSEH_CONTEXT | WS_RULE_MASK) |
760 | ||
e6e045f8 SB |
761 | /* |
762 | * This struct is used when we need to buffer the output of the diff output. | |
763 | * | |
764 | * NEEDSWORK: Instead of storing a copy of the line, add an offset pointer | |
765 | * into the pre/post image file. This pointer could be a union with the | |
766 | * line pointer. By storing an offset into the file instead of the literal line, | |
767 | * we can decrease the memory footprint for the buffered output. At first we | |
768 | * may want to only have indirection for the content lines, but we could also | |
769 | * enhance the state for emitting prefabricated lines, e.g. the similarity | |
770 | * score line or hunk/file headers would only need to store a number or path | |
771 | * and then the output can be constructed later on depending on state. | |
772 | */ | |
773 | struct emitted_diff_symbol { | |
774 | const char *line; | |
775 | int len; | |
776 | int flags; | |
21536d07 PW |
777 | int indent_off; /* Offset to first non-whitespace character */ |
778 | int indent_width; /* The visual width of the indentation */ | |
72962e8b | 779 | unsigned id; |
e6e045f8 SB |
780 | enum diff_symbol s; |
781 | }; | |
9865b6e6 | 782 | #define EMITTED_DIFF_SYMBOL_INIT { 0 } |
e6e045f8 SB |
783 | |
784 | struct emitted_diff_symbols { | |
785 | struct emitted_diff_symbol *buf; | |
786 | int nr, alloc; | |
787 | }; | |
9865b6e6 | 788 | #define EMITTED_DIFF_SYMBOLS_INIT { 0 } |
e6e045f8 SB |
789 | |
790 | static void append_emitted_diff_symbol(struct diff_options *o, | |
791 | struct emitted_diff_symbol *e) | |
6957eb9a | 792 | { |
e6e045f8 SB |
793 | struct emitted_diff_symbol *f; |
794 | ||
795 | ALLOC_GROW(o->emitted_symbols->buf, | |
796 | o->emitted_symbols->nr + 1, | |
797 | o->emitted_symbols->alloc); | |
798 | f = &o->emitted_symbols->buf[o->emitted_symbols->nr++]; | |
799 | ||
800 | memcpy(f, e, sizeof(struct emitted_diff_symbol)); | |
801 | f->line = e->line ? xmemdupz(e->line, e->len) : NULL; | |
6957eb9a JH |
802 | } |
803 | ||
77e56d55 ÆAB |
804 | static void free_emitted_diff_symbols(struct emitted_diff_symbols *e) |
805 | { | |
806 | if (!e) | |
807 | return; | |
808 | free(e->buf); | |
809 | free(e); | |
810 | } | |
811 | ||
2e2d5ac1 | 812 | struct moved_entry { |
2e2d5ac1 SB |
813 | const struct emitted_diff_symbol *es; |
814 | struct moved_entry *next_line; | |
72962e8b | 815 | struct moved_entry *next_match; |
2e2d5ac1 SB |
816 | }; |
817 | ||
74d156f4 PW |
818 | struct moved_block { |
819 | struct moved_entry *match; | |
21536d07 | 820 | int wsd; /* The whitespace delta of this block */ |
74d156f4 PW |
821 | }; |
822 | ||
0cd51e9d PW |
823 | #define INDENT_BLANKLINE INT_MIN |
824 | ||
21536d07 | 825 | static void fill_es_indent_data(struct emitted_diff_symbol *es) |
ca1f4ae4 | 826 | { |
0cd51e9d | 827 | unsigned int off = 0, i; |
21536d07 PW |
828 | int width = 0, tab_width = es->flags & WS_TAB_WIDTH_MASK; |
829 | const char *s = es->line; | |
830 | const int len = es->len; | |
831 | ||
832 | /* skip any \v \f \r at start of indentation */ | |
833 | while (s[off] == '\f' || s[off] == '\v' || | |
834 | (s[off] == '\r' && off < len - 1)) | |
835 | off++; | |
836 | ||
837 | /* calculate the visual width of indentation */ | |
838 | while(1) { | |
839 | if (s[off] == ' ') { | |
840 | width++; | |
841 | off++; | |
842 | } else if (s[off] == '\t') { | |
843 | width += tab_width - (width % tab_width); | |
844 | while (s[++off] == '\t') | |
845 | width += tab_width; | |
846 | } else { | |
847 | break; | |
848 | } | |
849 | } | |
850 | ||
0cd51e9d PW |
851 | /* check if this line is blank */ |
852 | for (i = off; i < len; i++) | |
853 | if (!isspace(s[i])) | |
854 | break; | |
ca1f4ae4 | 855 | |
0cd51e9d PW |
856 | if (i == len) { |
857 | es->indent_width = INDENT_BLANKLINE; | |
858 | es->indent_off = len; | |
859 | } else { | |
860 | es->indent_off = off; | |
861 | es->indent_width = width; | |
862 | } | |
74d156f4 PW |
863 | } |
864 | ||
ca1f4ae4 | 865 | static int compute_ws_delta(const struct emitted_diff_symbol *a, |
25e61909 PW |
866 | const struct emitted_diff_symbol *b) |
867 | { | |
868 | int a_width = a->indent_width, | |
21536d07 | 869 | b_width = b->indent_width; |
21536d07 | 870 | |
25e61909 PW |
871 | if (a_width == INDENT_BLANKLINE && b_width == INDENT_BLANKLINE) |
872 | return INDENT_BLANKLINE; | |
fe4516d1 | 873 | |
25e61909 | 874 | return a_width - b_width; |
ca1f4ae4 SB |
875 | } |
876 | ||
52d14e16 PW |
877 | static int cmp_in_block_with_wsd(const struct moved_entry *cur, |
878 | const struct emitted_diff_symbol *l, | |
879 | struct moved_block *pmb) | |
ca1f4ae4 | 880 | { |
72962e8b | 881 | int a_width = cur->es->indent_width, b_width = l->indent_width; |
21536d07 | 882 | int delta; |
ca1f4ae4 | 883 | |
72962e8b PW |
884 | /* The text of each line must match */ |
885 | if (cur->es->id != l->id) | |
ca1f4ae4 SB |
886 | return 1; |
887 | ||
72962e8b PW |
888 | /* |
889 | * If 'l' and 'cur' are both blank then we don't need to check the | |
890 | * indent. We only need to check cur as we know the strings match. | |
891 | * */ | |
892 | if (a_width == INDENT_BLANKLINE) | |
0cd51e9d | 893 | return 0; |
ca1f4ae4 SB |
894 | |
895 | /* | |
21536d07 PW |
896 | * The indent changes of the block are known and stored in pmb->wsd; |
897 | * however we need to check if the indent changes of the current line | |
72962e8b | 898 | * match those of the current block. |
ca1f4ae4 | 899 | */ |
52d14e16 | 900 | delta = b_width - a_width; |
ca1f4ae4 | 901 | |
0cd51e9d PW |
902 | /* |
903 | * If the previous lines of this block were all blank then set its | |
904 | * whitespace delta. | |
905 | */ | |
906 | if (pmb->wsd == INDENT_BLANKLINE) | |
907 | pmb->wsd = delta; | |
ca1f4ae4 | 908 | |
72962e8b | 909 | return delta != pmb->wsd; |
ca1f4ae4 | 910 | } |
2e2d5ac1 | 911 | |
72962e8b PW |
912 | struct interned_diff_symbol { |
913 | struct hashmap_entry ent; | |
914 | struct emitted_diff_symbol *es; | |
915 | }; | |
916 | ||
917 | static int interned_diff_symbol_cmp(const void *hashmap_cmp_fn_data, | |
918 | const struct hashmap_entry *eptr, | |
919 | const struct hashmap_entry *entry_or_key, | |
5cf88fd8 | 920 | const void *keydata UNUSED) |
2e2d5ac1 | 921 | { |
ee1df66f | 922 | const struct diff_options *diffopt = hashmap_cmp_fn_data; |
25e61909 | 923 | const struct emitted_diff_symbol *a, *b; |
b3095712 SB |
924 | unsigned flags = diffopt->color_moved_ws_handling |
925 | & XDF_WHITESPACE_FLAGS; | |
ee1df66f | 926 | |
72962e8b PW |
927 | a = container_of(eptr, const struct interned_diff_symbol, ent)->es; |
928 | b = container_of(entry_or_key, const struct interned_diff_symbol, ent)->es; | |
ca1f4ae4 | 929 | |
25e61909 PW |
930 | return !xdiff_compare_lines(a->line + a->indent_off, |
931 | a->len - a->indent_off, | |
932 | b->line + b->indent_off, | |
933 | b->len - b->indent_off, flags); | |
2e2d5ac1 SB |
934 | } |
935 | ||
72962e8b PW |
936 | static void prepare_entry(struct diff_options *o, struct emitted_diff_symbol *l, |
937 | struct interned_diff_symbol *s) | |
2e2d5ac1 | 938 | { |
b3095712 | 939 | unsigned flags = o->color_moved_ws_handling & XDF_WHITESPACE_FLAGS; |
25e61909 PW |
940 | unsigned int hash = xdiff_hash_string(l->line + l->indent_off, |
941 | l->len - l->indent_off, flags); | |
2e2d5ac1 | 942 | |
72962e8b PW |
943 | hashmap_entry_init(&s->ent, hash); |
944 | s->es = l; | |
2e2d5ac1 SB |
945 | } |
946 | ||
72962e8b PW |
947 | struct moved_entry_list { |
948 | struct moved_entry *add, *del; | |
949 | }; | |
950 | ||
951 | static struct moved_entry_list *add_lines_to_move_detection(struct diff_options *o, | |
952 | struct mem_pool *entry_mem_pool) | |
2e2d5ac1 SB |
953 | { |
954 | struct moved_entry *prev_line = NULL; | |
72962e8b PW |
955 | struct mem_pool interned_pool; |
956 | struct hashmap interned_map; | |
957 | struct moved_entry_list *entry_list = NULL; | |
958 | size_t entry_list_alloc = 0; | |
959 | unsigned id = 0; | |
2e2d5ac1 | 960 | int n; |
72962e8b PW |
961 | |
962 | hashmap_init(&interned_map, interned_diff_symbol_cmp, o, 8096); | |
963 | mem_pool_init(&interned_pool, 1024 * 1024); | |
964 | ||
2e2d5ac1 | 965 | for (n = 0; n < o->emitted_symbols->nr; n++) { |
72962e8b PW |
966 | struct interned_diff_symbol key; |
967 | struct emitted_diff_symbol *l = &o->emitted_symbols->buf[n]; | |
968 | struct interned_diff_symbol *s; | |
969 | struct moved_entry *entry; | |
2e2d5ac1 | 970 | |
72962e8b | 971 | if (l->s != DIFF_SYMBOL_PLUS && l->s != DIFF_SYMBOL_MINUS) { |
2e2d5ac1 SB |
972 | prev_line = NULL; |
973 | continue; | |
974 | } | |
975 | ||
21536d07 PW |
976 | if (o->color_moved_ws_handling & |
977 | COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE) | |
72962e8b | 978 | fill_es_indent_data(l); |
2e2d5ac1 | 979 | |
72962e8b PW |
980 | prepare_entry(o, l, &key); |
981 | s = hashmap_get_entry(&interned_map, &key, ent, &key.ent); | |
982 | if (s) { | |
983 | l->id = s->es->id; | |
984 | } else { | |
985 | l->id = id; | |
986 | ALLOC_GROW_BY(entry_list, id, 1, entry_list_alloc); | |
987 | hashmap_add(&interned_map, | |
988 | memcpy(mem_pool_alloc(&interned_pool, | |
989 | sizeof(key)), | |
990 | &key, sizeof(key))); | |
991 | } | |
992 | entry = mem_pool_alloc(entry_mem_pool, sizeof(*entry)); | |
993 | entry->es = l; | |
994 | entry->next_line = NULL; | |
995 | if (prev_line && prev_line->es->s == l->s) | |
996 | prev_line->next_line = entry; | |
997 | prev_line = entry; | |
998 | if (l->s == DIFF_SYMBOL_PLUS) { | |
999 | entry->next_match = entry_list[l->id].add; | |
1000 | entry_list[l->id].add = entry; | |
1001 | } else { | |
1002 | entry->next_match = entry_list[l->id].del; | |
1003 | entry_list[l->id].del = entry; | |
1004 | } | |
2e2d5ac1 | 1005 | } |
72962e8b PW |
1006 | |
1007 | hashmap_clear(&interned_map); | |
1008 | mem_pool_discard(&interned_pool, 0); | |
1009 | ||
1010 | return entry_list; | |
2e2d5ac1 SB |
1011 | } |
1012 | ||
e2fe6abc | 1013 | static void pmb_advance_or_null(struct diff_options *o, |
08fba107 | 1014 | struct emitted_diff_symbol *l, |
74d156f4 | 1015 | struct moved_block *pmb, |
0e488f17 | 1016 | int *pmb_nr) |
e2fe6abc | 1017 | { |
0e488f17 | 1018 | int i, j; |
08fba107 | 1019 | |
0e488f17 | 1020 | for (i = 0, j = 0; i < *pmb_nr; i++) { |
ff046a00 | 1021 | int match; |
74d156f4 | 1022 | struct moved_entry *prev = pmb[i].match; |
e2fe6abc SB |
1023 | struct moved_entry *cur = (prev && prev->next_line) ? |
1024 | prev->next_line : NULL; | |
e2fe6abc | 1025 | |
ff046a00 PW |
1026 | if (o->color_moved_ws_handling & |
1027 | COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE) | |
1028 | match = cur && | |
1029 | !cmp_in_block_with_wsd(cur, l, &pmb[i]); | |
1030 | else | |
72962e8b | 1031 | match = cur && cur->es->id == l->id; |
ca1f4ae4 | 1032 | |
0e488f17 PW |
1033 | if (match) { |
1034 | pmb[j] = pmb[i]; | |
1035 | pmb[j++].match = cur; | |
fab01ec5 | 1036 | } |
ca1f4ae4 | 1037 | } |
0e488f17 | 1038 | *pmb_nr = j; |
ca1f4ae4 SB |
1039 | } |
1040 | ||
7dfe4271 | 1041 | static void fill_potential_moved_blocks(struct diff_options *o, |
7dfe4271 PW |
1042 | struct moved_entry *match, |
1043 | struct emitted_diff_symbol *l, | |
1044 | struct moved_block **pmb_p, | |
1045 | int *pmb_alloc_p, int *pmb_nr_p) | |
2e2d5ac1 | 1046 | |
7dfe4271 PW |
1047 | { |
1048 | struct moved_block *pmb = *pmb_p; | |
1049 | int pmb_alloc = *pmb_alloc_p, pmb_nr = *pmb_nr_p; | |
2e2d5ac1 | 1050 | |
7dfe4271 PW |
1051 | /* |
1052 | * The current line is the start of a new block. | |
1053 | * Setup the set of potential blocks. | |
1054 | */ | |
72962e8b | 1055 | for (; match; match = match->next_match) { |
7dfe4271 PW |
1056 | ALLOC_GROW(pmb, pmb_nr + 1, pmb_alloc); |
1057 | if (o->color_moved_ws_handling & | |
25e61909 PW |
1058 | COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE) |
1059 | pmb[pmb_nr].wsd = compute_ws_delta(l, match->es); | |
1060 | else | |
7dfe4271 | 1061 | pmb[pmb_nr].wsd = 0; |
25e61909 | 1062 | pmb[pmb_nr++].match = match; |
2e2d5ac1 SB |
1063 | } |
1064 | ||
7dfe4271 PW |
1065 | *pmb_p = pmb; |
1066 | *pmb_alloc_p = pmb_alloc; | |
1067 | *pmb_nr_p = pmb_nr; | |
2e2d5ac1 SB |
1068 | } |
1069 | ||
09153277 JT |
1070 | /* |
1071 | * If o->color_moved is COLOR_MOVED_PLAIN, this function does nothing. | |
1072 | * | |
f0b8fb6e JT |
1073 | * Otherwise, if the last block has fewer alphanumeric characters than |
1074 | * COLOR_MOVED_MIN_ALNUM_COUNT, unset DIFF_SYMBOL_MOVED_LINE on all lines in | |
09153277 JT |
1075 | * that block. |
1076 | * | |
1077 | * The last block consists of the (n - block_length)'th line up to but not | |
1078 | * including the nth line. | |
f0b8fb6e | 1079 | * |
b0a2ba47 PW |
1080 | * Returns 0 if the last block is empty or is unset by this function, non zero |
1081 | * otherwise. | |
1082 | * | |
f0b8fb6e JT |
1083 | * NEEDSWORK: This uses the same heuristic as blame_entry_score() in blame.c. |
1084 | * Think of a way to unify them. | |
09153277 | 1085 | */ |
bea084ba PW |
1086 | #define DIFF_SYMBOL_MOVED_LINE_ZEBRA_MASK \ |
1087 | (DIFF_SYMBOL_MOVED_LINE | DIFF_SYMBOL_MOVED_LINE_ALT) | |
b0a2ba47 | 1088 | static int adjust_last_block(struct diff_options *o, int n, int block_length) |
09153277 | 1089 | { |
f0b8fb6e JT |
1090 | int i, alnum_count = 0; |
1091 | if (o->color_moved == COLOR_MOVED_PLAIN) | |
b0a2ba47 | 1092 | return block_length; |
f0b8fb6e JT |
1093 | for (i = 1; i < block_length + 1; i++) { |
1094 | const char *c = o->emitted_symbols->buf[n - i].line; | |
1095 | for (; *c; c++) { | |
1096 | if (!isalnum(*c)) | |
1097 | continue; | |
1098 | alnum_count++; | |
1099 | if (alnum_count >= COLOR_MOVED_MIN_ALNUM_COUNT) | |
b0a2ba47 | 1100 | return 1; |
f0b8fb6e JT |
1101 | } |
1102 | } | |
09153277 | 1103 | for (i = 1; i < block_length + 1; i++) |
bea084ba | 1104 | o->emitted_symbols->buf[n - i].flags &= ~DIFF_SYMBOL_MOVED_LINE_ZEBRA_MASK; |
b0a2ba47 | 1105 | return 0; |
09153277 JT |
1106 | } |
1107 | ||
2e2d5ac1 SB |
1108 | /* Find blocks of moved code, delegate actual coloring decision to helper */ |
1109 | static void mark_color_as_moved(struct diff_options *o, | |
72962e8b | 1110 | struct moved_entry_list *entry_list) |
2e2d5ac1 | 1111 | { |
74d156f4 | 1112 | struct moved_block *pmb = NULL; /* potentially moved blocks */ |
2e2d5ac1 | 1113 | int pmb_nr = 0, pmb_alloc = 0; |
b0a2ba47 | 1114 | int n, flipped_block = 0, block_length = 0; |
eb893525 | 1115 | enum diff_symbol moved_symbol = DIFF_SYMBOL_BINARY_DIFF_HEADER; |
2e2d5ac1 SB |
1116 | |
1117 | ||
1118 | for (n = 0; n < o->emitted_symbols->nr; n++) { | |
2e2d5ac1 SB |
1119 | struct moved_entry *match = NULL; |
1120 | struct emitted_diff_symbol *l = &o->emitted_symbols->buf[n]; | |
2e2d5ac1 SB |
1121 | |
1122 | switch (l->s) { | |
1123 | case DIFF_SYMBOL_PLUS: | |
72962e8b | 1124 | match = entry_list[l->id].del; |
2e2d5ac1 SB |
1125 | break; |
1126 | case DIFF_SYMBOL_MINUS: | |
72962e8b | 1127 | match = entry_list[l->id].add; |
2e2d5ac1 SB |
1128 | break; |
1129 | default: | |
b0a2ba47 | 1130 | flipped_block = 0; |
2e2d5ac1 SB |
1131 | } |
1132 | ||
eb893525 | 1133 | if (pmb_nr && (!match || l->s != moved_symbol)) { |
0990658b PW |
1134 | if (!adjust_last_block(o, n, block_length) && |
1135 | block_length > 1) { | |
1136 | /* | |
1137 | * Rewind in case there is another match | |
1138 | * starting at the second line of the block | |
1139 | */ | |
1140 | match = NULL; | |
1141 | n -= block_length; | |
1142 | } | |
2e2d5ac1 SB |
1143 | pmb_nr = 0; |
1144 | block_length = 0; | |
b0a2ba47 | 1145 | flipped_block = 0; |
eb893525 PW |
1146 | } |
1147 | if (!match) { | |
1148 | moved_symbol = DIFF_SYMBOL_BINARY_DIFF_HEADER; | |
2e2d5ac1 SB |
1149 | continue; |
1150 | } | |
1151 | ||
2034b473 PW |
1152 | if (o->color_moved == COLOR_MOVED_PLAIN) { |
1153 | l->flags |= DIFF_SYMBOL_MOVED_LINE; | |
176841f0 | 1154 | continue; |
2034b473 | 1155 | } |
176841f0 | 1156 | |
0e488f17 | 1157 | pmb_advance_or_null(o, l, pmb, &pmb_nr); |
2e2d5ac1 SB |
1158 | |
1159 | if (pmb_nr == 0) { | |
0990658b PW |
1160 | int contiguous = adjust_last_block(o, n, block_length); |
1161 | ||
1162 | if (!contiguous && block_length > 1) | |
1163 | /* | |
1164 | * Rewind in case there is another match | |
1165 | * starting at the second line of the block | |
1166 | */ | |
1167 | n -= block_length; | |
1168 | else | |
72962e8b | 1169 | fill_potential_moved_blocks(o, match, l, |
0990658b PW |
1170 | &pmb, &pmb_alloc, |
1171 | &pmb_nr); | |
2e2d5ac1 | 1172 | |
eb893525 | 1173 | if (contiguous && pmb_nr && moved_symbol == l->s) |
b0a2ba47 PW |
1174 | flipped_block = (flipped_block + 1) % 2; |
1175 | else | |
1176 | flipped_block = 0; | |
f0b8fb6e | 1177 | |
eb893525 PW |
1178 | if (pmb_nr) |
1179 | moved_symbol = l->s; | |
1180 | else | |
1181 | moved_symbol = DIFF_SYMBOL_BINARY_DIFF_HEADER; | |
1182 | ||
f0b8fb6e | 1183 | block_length = 0; |
2e2d5ac1 SB |
1184 | } |
1185 | ||
2034b473 PW |
1186 | if (pmb_nr) { |
1187 | block_length++; | |
2034b473 PW |
1188 | l->flags |= DIFF_SYMBOL_MOVED_LINE; |
1189 | if (flipped_block && o->color_moved != COLOR_MOVED_BLOCKS) | |
1190 | l->flags |= DIFF_SYMBOL_MOVED_LINE_ALT; | |
1191 | } | |
2e2d5ac1 | 1192 | } |
09153277 | 1193 | adjust_last_block(o, n, block_length); |
2e2d5ac1 SB |
1194 | |
1195 | free(pmb); | |
1196 | } | |
e6e045f8 | 1197 | |
86b452e2 SB |
1198 | static void dim_moved_lines(struct diff_options *o) |
1199 | { | |
1200 | int n; | |
1201 | for (n = 0; n < o->emitted_symbols->nr; n++) { | |
1202 | struct emitted_diff_symbol *prev = (n != 0) ? | |
1203 | &o->emitted_symbols->buf[n - 1] : NULL; | |
1204 | struct emitted_diff_symbol *l = &o->emitted_symbols->buf[n]; | |
1205 | struct emitted_diff_symbol *next = | |
1206 | (n < o->emitted_symbols->nr - 1) ? | |
1207 | &o->emitted_symbols->buf[n + 1] : NULL; | |
1208 | ||
1209 | /* Not a plus or minus line? */ | |
1210 | if (l->s != DIFF_SYMBOL_PLUS && l->s != DIFF_SYMBOL_MINUS) | |
1211 | continue; | |
1212 | ||
1213 | /* Not a moved line? */ | |
1214 | if (!(l->flags & DIFF_SYMBOL_MOVED_LINE)) | |
1215 | continue; | |
1216 | ||
1217 | /* | |
1218 | * If prev or next are not a plus or minus line, | |
1219 | * pretend they don't exist | |
1220 | */ | |
1221 | if (prev && prev->s != DIFF_SYMBOL_PLUS && | |
1222 | prev->s != DIFF_SYMBOL_MINUS) | |
1223 | prev = NULL; | |
1224 | if (next && next->s != DIFF_SYMBOL_PLUS && | |
1225 | next->s != DIFF_SYMBOL_MINUS) | |
1226 | next = NULL; | |
1227 | ||
1228 | /* Inside a block? */ | |
1229 | if ((prev && | |
1230 | (prev->flags & DIFF_SYMBOL_MOVED_LINE_ZEBRA_MASK) == | |
1231 | (l->flags & DIFF_SYMBOL_MOVED_LINE_ZEBRA_MASK)) && | |
1232 | (next && | |
1233 | (next->flags & DIFF_SYMBOL_MOVED_LINE_ZEBRA_MASK) == | |
1234 | (l->flags & DIFF_SYMBOL_MOVED_LINE_ZEBRA_MASK))) { | |
1235 | l->flags |= DIFF_SYMBOL_MOVED_LINE_UNINTERESTING; | |
1236 | continue; | |
1237 | } | |
1238 | ||
1239 | /* Check if we are at an interesting bound: */ | |
1240 | if (prev && (prev->flags & DIFF_SYMBOL_MOVED_LINE) && | |
1241 | (prev->flags & DIFF_SYMBOL_MOVED_LINE_ALT) != | |
1242 | (l->flags & DIFF_SYMBOL_MOVED_LINE_ALT)) | |
1243 | continue; | |
1244 | if (next && (next->flags & DIFF_SYMBOL_MOVED_LINE) && | |
1245 | (next->flags & DIFF_SYMBOL_MOVED_LINE_ALT) != | |
1246 | (l->flags & DIFF_SYMBOL_MOVED_LINE_ALT)) | |
1247 | continue; | |
1248 | ||
1249 | /* | |
1250 | * The boundary to prev and next are not interesting, | |
1251 | * so this line is not interesting as a whole | |
1252 | */ | |
1253 | l->flags |= DIFF_SYMBOL_MOVED_LINE_UNINTERESTING; | |
1254 | } | |
1255 | } | |
1256 | ||
091f8e28 | 1257 | static void emit_line_ws_markup(struct diff_options *o, |
9d1e16bf SB |
1258 | const char *set_sign, const char *set, |
1259 | const char *reset, | |
bc9feb05 | 1260 | int sign_index, const char *line, int len, |
091f8e28 | 1261 | unsigned ws_rule, int blank_at_eof) |
6957eb9a | 1262 | { |
b8767f79 | 1263 | const char *ws = NULL; |
bc9feb05 | 1264 | int sign = o->output_indicators[sign_index]; |
6957eb9a | 1265 | |
091f8e28 SB |
1266 | if (o->ws_error_highlight & ws_rule) { |
1267 | ws = diff_get_color_opt(o, DIFF_WHITESPACE); | |
b8767f79 JH |
1268 | if (!*ws) |
1269 | ws = NULL; | |
1270 | } | |
1271 | ||
f7c3b4e2 | 1272 | if (!ws && !set_sign) |
017ac45e | 1273 | emit_line_0(o, set, NULL, 0, reset, sign, line, len); |
f7c3b4e2 | 1274 | else if (!ws) { |
29ef759d | 1275 | emit_line_0(o, set_sign, set, !!set_sign, reset, sign, line, len); |
f7c3b4e2 | 1276 | } else if (blank_at_eof) |
6957eb9a | 1277 | /* Blank line at EOF - paint '+' as well */ |
017ac45e | 1278 | emit_line_0(o, ws, NULL, 0, reset, sign, line, len); |
6957eb9a JH |
1279 | else { |
1280 | /* Emit just the prefix, then the rest. */ | |
017ac45e | 1281 | emit_line_0(o, set_sign ? set_sign : set, NULL, !!set_sign, reset, |
f7c3b4e2 | 1282 | sign, "", 0); |
091f8e28 SB |
1283 | ws_check_emit(line, len, ws_rule, |
1284 | o->file, set, reset, ws); | |
6957eb9a JH |
1285 | } |
1286 | } | |
1287 | ||
e6e045f8 SB |
1288 | static void emit_diff_symbol_from_struct(struct diff_options *o, |
1289 | struct emitted_diff_symbol *eds) | |
36a4cefd | 1290 | { |
b9cbfde6 | 1291 | static const char *nneof = " No newline at end of file\n"; |
f7c3b4e2 | 1292 | const char *context, *reset, *set, *set_sign, *meta, *fraginfo; |
e6e045f8 SB |
1293 | |
1294 | enum diff_symbol s = eds->s; | |
1295 | const char *line = eds->line; | |
1296 | int len = eds->len; | |
1297 | unsigned flags = eds->flags; | |
1298 | ||
36a4cefd | 1299 | switch (s) { |
b9cbfde6 SB |
1300 | case DIFF_SYMBOL_NO_LF_EOF: |
1301 | context = diff_get_color_opt(o, DIFF_CONTEXT); | |
1302 | reset = diff_get_color_opt(o, DIFF_RESET); | |
1303 | putc('\n', o->file); | |
017ac45e | 1304 | emit_line_0(o, context, NULL, 0, reset, '\\', |
b9cbfde6 SB |
1305 | nneof, strlen(nneof)); |
1306 | break; | |
f3597138 SB |
1307 | case DIFF_SYMBOL_SUBMODULE_HEADER: |
1308 | case DIFF_SYMBOL_SUBMODULE_ERROR: | |
1309 | case DIFF_SYMBOL_SUBMODULE_PIPETHROUGH: | |
0911c475 | 1310 | case DIFF_SYMBOL_STATS_SUMMARY_INSERTS_DELETES: |
146fdb0d | 1311 | case DIFF_SYMBOL_SUMMARY: |
0911c475 | 1312 | case DIFF_SYMBOL_STATS_LINE: |
4eed0ebd | 1313 | case DIFF_SYMBOL_BINARY_DIFF_BODY: |
68abc6f1 SB |
1314 | case DIFF_SYMBOL_CONTEXT_FRAGINFO: |
1315 | emit_line(o, "", "", line, len); | |
1316 | break; | |
f2bb1218 | 1317 | case DIFF_SYMBOL_CONTEXT_INCOMPLETE: |
c64b420b SB |
1318 | case DIFF_SYMBOL_CONTEXT_MARKER: |
1319 | context = diff_get_color_opt(o, DIFF_CONTEXT); | |
1320 | reset = diff_get_color_opt(o, DIFF_RESET); | |
1321 | emit_line(o, context, reset, line, len); | |
1322 | break; | |
36a4cefd SB |
1323 | case DIFF_SYMBOL_SEPARATOR: |
1324 | fprintf(o->file, "%s%c", | |
1325 | diff_line_prefix(o), | |
1326 | o->line_termination); | |
1327 | break; | |
091f8e28 SB |
1328 | case DIFF_SYMBOL_CONTEXT: |
1329 | set = diff_get_color_opt(o, DIFF_CONTEXT); | |
1330 | reset = diff_get_color_opt(o, DIFF_RESET); | |
f7c3b4e2 JS |
1331 | set_sign = NULL; |
1332 | if (o->flags.dual_color_diffed_diffs) { | |
1333 | char c = !len ? 0 : line[0]; | |
1334 | ||
1335 | if (c == '+') | |
1336 | set = diff_get_color_opt(o, DIFF_FILE_NEW); | |
1337 | else if (c == '@') | |
1338 | set = diff_get_color_opt(o, DIFF_FRAGINFO); | |
1339 | else if (c == '-') | |
1340 | set = diff_get_color_opt(o, DIFF_FILE_OLD); | |
1341 | } | |
7648b79e | 1342 | emit_line_ws_markup(o, set_sign, set, reset, |
bc9feb05 | 1343 | OUTPUT_INDICATOR_CONTEXT, line, len, |
091f8e28 SB |
1344 | flags & (DIFF_SYMBOL_CONTENT_WS_MASK), 0); |
1345 | break; | |
1346 | case DIFF_SYMBOL_PLUS: | |
86b452e2 SB |
1347 | switch (flags & (DIFF_SYMBOL_MOVED_LINE | |
1348 | DIFF_SYMBOL_MOVED_LINE_ALT | | |
1349 | DIFF_SYMBOL_MOVED_LINE_UNINTERESTING)) { | |
1350 | case DIFF_SYMBOL_MOVED_LINE | | |
1351 | DIFF_SYMBOL_MOVED_LINE_ALT | | |
1352 | DIFF_SYMBOL_MOVED_LINE_UNINTERESTING: | |
1353 | set = diff_get_color_opt(o, DIFF_FILE_NEW_MOVED_ALT_DIM); | |
1354 | break; | |
1355 | case DIFF_SYMBOL_MOVED_LINE | | |
1356 | DIFF_SYMBOL_MOVED_LINE_ALT: | |
2e2d5ac1 | 1357 | set = diff_get_color_opt(o, DIFF_FILE_NEW_MOVED_ALT); |
86b452e2 SB |
1358 | break; |
1359 | case DIFF_SYMBOL_MOVED_LINE | | |
1360 | DIFF_SYMBOL_MOVED_LINE_UNINTERESTING: | |
1361 | set = diff_get_color_opt(o, DIFF_FILE_NEW_MOVED_DIM); | |
1362 | break; | |
1363 | case DIFF_SYMBOL_MOVED_LINE: | |
2e2d5ac1 | 1364 | set = diff_get_color_opt(o, DIFF_FILE_NEW_MOVED); |
86b452e2 SB |
1365 | break; |
1366 | default: | |
2e2d5ac1 | 1367 | set = diff_get_color_opt(o, DIFF_FILE_NEW); |
86b452e2 | 1368 | } |
091f8e28 | 1369 | reset = diff_get_color_opt(o, DIFF_RESET); |
f7c3b4e2 JS |
1370 | if (!o->flags.dual_color_diffed_diffs) |
1371 | set_sign = NULL; | |
1372 | else { | |
1373 | char c = !len ? 0 : line[0]; | |
1374 | ||
1375 | set_sign = set; | |
1376 | if (c == '-') | |
a7be92ac | 1377 | set = diff_get_color_opt(o, DIFF_FILE_OLD_BOLD); |
f7c3b4e2 JS |
1378 | else if (c == '@') |
1379 | set = diff_get_color_opt(o, DIFF_FRAGINFO); | |
a7be92ac JS |
1380 | else if (c == '+') |
1381 | set = diff_get_color_opt(o, DIFF_FILE_NEW_BOLD); | |
1382 | else | |
1383 | set = diff_get_color_opt(o, DIFF_CONTEXT_BOLD); | |
0b91faa0 | 1384 | flags &= ~DIFF_SYMBOL_CONTENT_WS_MASK; |
f7c3b4e2 | 1385 | } |
7648b79e | 1386 | emit_line_ws_markup(o, set_sign, set, reset, |
bc9feb05 | 1387 | OUTPUT_INDICATOR_NEW, line, len, |
091f8e28 SB |
1388 | flags & DIFF_SYMBOL_CONTENT_WS_MASK, |
1389 | flags & DIFF_SYMBOL_CONTENT_BLANK_LINE_EOF); | |
1390 | break; | |
1391 | case DIFF_SYMBOL_MINUS: | |
86b452e2 SB |
1392 | switch (flags & (DIFF_SYMBOL_MOVED_LINE | |
1393 | DIFF_SYMBOL_MOVED_LINE_ALT | | |
1394 | DIFF_SYMBOL_MOVED_LINE_UNINTERESTING)) { | |
1395 | case DIFF_SYMBOL_MOVED_LINE | | |
1396 | DIFF_SYMBOL_MOVED_LINE_ALT | | |
1397 | DIFF_SYMBOL_MOVED_LINE_UNINTERESTING: | |
1398 | set = diff_get_color_opt(o, DIFF_FILE_OLD_MOVED_ALT_DIM); | |
1399 | break; | |
1400 | case DIFF_SYMBOL_MOVED_LINE | | |
1401 | DIFF_SYMBOL_MOVED_LINE_ALT: | |
2e2d5ac1 | 1402 | set = diff_get_color_opt(o, DIFF_FILE_OLD_MOVED_ALT); |
86b452e2 SB |
1403 | break; |
1404 | case DIFF_SYMBOL_MOVED_LINE | | |
1405 | DIFF_SYMBOL_MOVED_LINE_UNINTERESTING: | |
1406 | set = diff_get_color_opt(o, DIFF_FILE_OLD_MOVED_DIM); | |
1407 | break; | |
1408 | case DIFF_SYMBOL_MOVED_LINE: | |
2e2d5ac1 | 1409 | set = diff_get_color_opt(o, DIFF_FILE_OLD_MOVED); |
86b452e2 SB |
1410 | break; |
1411 | default: | |
2e2d5ac1 | 1412 | set = diff_get_color_opt(o, DIFF_FILE_OLD); |
86b452e2 | 1413 | } |
091f8e28 | 1414 | reset = diff_get_color_opt(o, DIFF_RESET); |
f7c3b4e2 JS |
1415 | if (!o->flags.dual_color_diffed_diffs) |
1416 | set_sign = NULL; | |
1417 | else { | |
1418 | char c = !len ? 0 : line[0]; | |
1419 | ||
1420 | set_sign = set; | |
1421 | if (c == '+') | |
a7be92ac | 1422 | set = diff_get_color_opt(o, DIFF_FILE_NEW_DIM); |
f7c3b4e2 JS |
1423 | else if (c == '@') |
1424 | set = diff_get_color_opt(o, DIFF_FRAGINFO); | |
a7be92ac JS |
1425 | else if (c == '-') |
1426 | set = diff_get_color_opt(o, DIFF_FILE_OLD_DIM); | |
1427 | else | |
1428 | set = diff_get_color_opt(o, DIFF_CONTEXT_DIM); | |
f7c3b4e2 | 1429 | } |
7648b79e | 1430 | emit_line_ws_markup(o, set_sign, set, reset, |
bc9feb05 | 1431 | OUTPUT_INDICATOR_OLD, line, len, |
091f8e28 SB |
1432 | flags & DIFF_SYMBOL_CONTENT_WS_MASK, 0); |
1433 | break; | |
ff958679 SB |
1434 | case DIFF_SYMBOL_WORDS_PORCELAIN: |
1435 | context = diff_get_color_opt(o, DIFF_CONTEXT); | |
1436 | reset = diff_get_color_opt(o, DIFF_RESET); | |
1437 | emit_line(o, context, reset, line, len); | |
1438 | fputs("~\n", o->file); | |
1439 | break; | |
1440 | case DIFF_SYMBOL_WORDS: | |
1441 | context = diff_get_color_opt(o, DIFF_CONTEXT); | |
1442 | reset = diff_get_color_opt(o, DIFF_RESET); | |
1443 | /* | |
1444 | * Skip the prefix character, if any. With | |
1445 | * diff_suppress_blank_empty, there may be | |
1446 | * none. | |
1447 | */ | |
1448 | if (line[0] != '\n') { | |
1449 | line++; | |
1450 | len--; | |
1451 | } | |
1452 | emit_line(o, context, reset, line, len); | |
1453 | break; | |
3ee8b7bf SB |
1454 | case DIFF_SYMBOL_FILEPAIR_PLUS: |
1455 | meta = diff_get_color_opt(o, DIFF_METAINFO); | |
1456 | reset = diff_get_color_opt(o, DIFF_RESET); | |
1457 | fprintf(o->file, "%s%s+++ %s%s%s\n", diff_line_prefix(o), meta, | |
1458 | line, reset, | |
1459 | strchr(line, ' ') ? "\t" : ""); | |
1460 | break; | |
1461 | case DIFF_SYMBOL_FILEPAIR_MINUS: | |
1462 | meta = diff_get_color_opt(o, DIFF_METAINFO); | |
1463 | reset = diff_get_color_opt(o, DIFF_RESET); | |
1464 | fprintf(o->file, "%s%s--- %s%s%s\n", diff_line_prefix(o), meta, | |
1465 | line, reset, | |
1466 | strchr(line, ' ') ? "\t" : ""); | |
1467 | break; | |
4acaaa7a | 1468 | case DIFF_SYMBOL_BINARY_FILES: |
a29b0a13 SB |
1469 | case DIFF_SYMBOL_HEADER: |
1470 | fprintf(o->file, "%s", line); | |
1471 | break; | |
4eed0ebd SB |
1472 | case DIFF_SYMBOL_BINARY_DIFF_HEADER: |
1473 | fprintf(o->file, "%sGIT binary patch\n", diff_line_prefix(o)); | |
1474 | break; | |
1475 | case DIFF_SYMBOL_BINARY_DIFF_HEADER_DELTA: | |
1476 | fprintf(o->file, "%sdelta %s\n", diff_line_prefix(o), line); | |
1477 | break; | |
1478 | case DIFF_SYMBOL_BINARY_DIFF_HEADER_LITERAL: | |
1479 | fprintf(o->file, "%sliteral %s\n", diff_line_prefix(o), line); | |
1480 | break; | |
1481 | case DIFF_SYMBOL_BINARY_DIFF_FOOTER: | |
1482 | fputs(diff_line_prefix(o), o->file); | |
1483 | fputc('\n', o->file); | |
1484 | break; | |
5af6ea95 SB |
1485 | case DIFF_SYMBOL_REWRITE_DIFF: |
1486 | fraginfo = diff_get_color(o->use_color, DIFF_FRAGINFO); | |
1487 | reset = diff_get_color_opt(o, DIFF_RESET); | |
1488 | emit_line(o, fraginfo, reset, line, len); | |
1489 | break; | |
f3597138 SB |
1490 | case DIFF_SYMBOL_SUBMODULE_ADD: |
1491 | set = diff_get_color_opt(o, DIFF_FILE_NEW); | |
1492 | reset = diff_get_color_opt(o, DIFF_RESET); | |
1493 | emit_line(o, set, reset, line, len); | |
1494 | break; | |
1495 | case DIFF_SYMBOL_SUBMODULE_DEL: | |
1496 | set = diff_get_color_opt(o, DIFF_FILE_OLD); | |
1497 | reset = diff_get_color_opt(o, DIFF_RESET); | |
1498 | emit_line(o, set, reset, line, len); | |
1499 | break; | |
1500 | case DIFF_SYMBOL_SUBMODULE_UNTRACKED: | |
1501 | fprintf(o->file, "%sSubmodule %s contains untracked content\n", | |
1502 | diff_line_prefix(o), line); | |
1503 | break; | |
1504 | case DIFF_SYMBOL_SUBMODULE_MODIFIED: | |
1505 | fprintf(o->file, "%sSubmodule %s contains modified content\n", | |
1506 | diff_line_prefix(o), line); | |
1507 | break; | |
0911c475 SB |
1508 | case DIFF_SYMBOL_STATS_SUMMARY_NO_FILES: |
1509 | emit_line(o, "", "", " 0 files changed\n", | |
1510 | strlen(" 0 files changed\n")); | |
1511 | break; | |
1512 | case DIFF_SYMBOL_STATS_SUMMARY_ABBREV: | |
1513 | emit_line(o, "", "", " ...\n", strlen(" ...\n")); | |
1514 | break; | |
bd033291 SB |
1515 | case DIFF_SYMBOL_WORD_DIFF: |
1516 | fprintf(o->file, "%.*s", len, line); | |
1517 | break; | |
30b7e1e7 SB |
1518 | case DIFF_SYMBOL_STAT_SEP: |
1519 | fputs(o->stat_sep, o->file); | |
1520 | break; | |
36a4cefd | 1521 | default: |
033abf97 | 1522 | BUG("unknown diff symbol"); |
36a4cefd SB |
1523 | } |
1524 | } | |
1525 | ||
e6e045f8 SB |
1526 | static void emit_diff_symbol(struct diff_options *o, enum diff_symbol s, |
1527 | const char *line, int len, unsigned flags) | |
1528 | { | |
b4a5c5c4 PW |
1529 | struct emitted_diff_symbol e = { |
1530 | .line = line, .len = len, .flags = flags, .s = s | |
1531 | }; | |
e6e045f8 SB |
1532 | |
1533 | if (o->emitted_symbols) | |
1534 | append_emitted_diff_symbol(o, &e); | |
1535 | else | |
1536 | emit_diff_symbol_from_struct(o, &e); | |
1537 | } | |
1538 | ||
f3597138 SB |
1539 | void diff_emit_submodule_del(struct diff_options *o, const char *line) |
1540 | { | |
1541 | emit_diff_symbol(o, DIFF_SYMBOL_SUBMODULE_DEL, line, strlen(line), 0); | |
1542 | } | |
1543 | ||
1544 | void diff_emit_submodule_add(struct diff_options *o, const char *line) | |
1545 | { | |
1546 | emit_diff_symbol(o, DIFF_SYMBOL_SUBMODULE_ADD, line, strlen(line), 0); | |
1547 | } | |
1548 | ||
1549 | void diff_emit_submodule_untracked(struct diff_options *o, const char *path) | |
1550 | { | |
1551 | emit_diff_symbol(o, DIFF_SYMBOL_SUBMODULE_UNTRACKED, | |
1552 | path, strlen(path), 0); | |
1553 | } | |
1554 | ||
1555 | void diff_emit_submodule_modified(struct diff_options *o, const char *path) | |
1556 | { | |
1557 | emit_diff_symbol(o, DIFF_SYMBOL_SUBMODULE_MODIFIED, | |
1558 | path, strlen(path), 0); | |
1559 | } | |
1560 | ||
1561 | void diff_emit_submodule_header(struct diff_options *o, const char *header) | |
1562 | { | |
1563 | emit_diff_symbol(o, DIFF_SYMBOL_SUBMODULE_HEADER, | |
1564 | header, strlen(header), 0); | |
1565 | } | |
1566 | ||
1567 | void diff_emit_submodule_error(struct diff_options *o, const char *err) | |
1568 | { | |
1569 | emit_diff_symbol(o, DIFF_SYMBOL_SUBMODULE_ERROR, err, strlen(err), 0); | |
1570 | } | |
1571 | ||
1572 | void diff_emit_submodule_pipethrough(struct diff_options *o, | |
1573 | const char *line, int len) | |
1574 | { | |
1575 | emit_diff_symbol(o, DIFF_SYMBOL_SUBMODULE_PIPETHROUGH, line, len, 0); | |
1576 | } | |
1577 | ||
6957eb9a JH |
1578 | static int new_blank_line_at_eof(struct emit_callback *ecbdata, const char *line, int len) |
1579 | { | |
1580 | if (!((ecbdata->ws_rule & WS_BLANK_AT_EOF) && | |
1581 | ecbdata->blank_at_eof_in_preimage && | |
1582 | ecbdata->blank_at_eof_in_postimage && | |
1583 | ecbdata->blank_at_eof_in_preimage <= ecbdata->lno_in_preimage && | |
1584 | ecbdata->blank_at_eof_in_postimage <= ecbdata->lno_in_postimage)) | |
1585 | return 0; | |
018cff70 | 1586 | return ws_blank_line(line, len, ecbdata->ws_rule); |
6957eb9a JH |
1587 | } |
1588 | ||
e04df612 | 1589 | static void emit_add_line(struct emit_callback *ecbdata, |
0e383e18 JH |
1590 | const char *line, int len) |
1591 | { | |
091f8e28 SB |
1592 | unsigned flags = WSEH_NEW | ecbdata->ws_rule; |
1593 | if (new_blank_line_at_eof(ecbdata, line, len)) | |
1594 | flags |= DIFF_SYMBOL_CONTENT_BLANK_LINE_EOF; | |
1595 | ||
1596 | emit_diff_symbol(ecbdata->opt, DIFF_SYMBOL_PLUS, line, len, flags); | |
b8767f79 | 1597 | } |
0e383e18 | 1598 | |
e04df612 | 1599 | static void emit_del_line(struct emit_callback *ecbdata, |
b8767f79 JH |
1600 | const char *line, int len) |
1601 | { | |
091f8e28 SB |
1602 | unsigned flags = WSEH_OLD | ecbdata->ws_rule; |
1603 | emit_diff_symbol(ecbdata->opt, DIFF_SYMBOL_MINUS, line, len, flags); | |
0e383e18 JH |
1604 | } |
1605 | ||
e04df612 | 1606 | static void emit_context_line(struct emit_callback *ecbdata, |
0e383e18 JH |
1607 | const char *line, int len) |
1608 | { | |
091f8e28 SB |
1609 | unsigned flags = WSEH_CONTEXT | ecbdata->ws_rule; |
1610 | emit_diff_symbol(ecbdata->opt, DIFF_SYMBOL_CONTEXT, line, len, flags); | |
0e383e18 JH |
1611 | } |
1612 | ||
89cb73a1 BW |
1613 | static void emit_hunk_header(struct emit_callback *ecbdata, |
1614 | const char *line, int len) | |
1615 | { | |
8dbf3eb6 | 1616 | const char *context = diff_get_color(ecbdata->color_diff, DIFF_CONTEXT); |
89cb73a1 BW |
1617 | const char *frag = diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO); |
1618 | const char *func = diff_get_color(ecbdata->color_diff, DIFF_FUNCINFO); | |
1619 | const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET); | |
f7c3b4e2 | 1620 | const char *reverse = ecbdata->color_diff ? GIT_COLOR_REVERSE : ""; |
89cb73a1 BW |
1621 | static const char atat[2] = { '@', '@' }; |
1622 | const char *cp, *ep; | |
2efcc977 BY |
1623 | struct strbuf msgbuf = STRBUF_INIT; |
1624 | int org_len = len; | |
1625 | int i = 1; | |
89cb73a1 BW |
1626 | |
1627 | /* | |
1628 | * As a hunk header must begin with "@@ -<old>, +<new> @@", | |
1629 | * it always is at least 10 bytes long. | |
1630 | */ | |
1631 | if (len < 10 || | |
1632 | memcmp(line, atat, 2) || | |
1633 | !(ep = memmem(line + 2, len - 2, atat, 2))) { | |
c64b420b | 1634 | emit_diff_symbol(ecbdata->opt, |
091f8e28 | 1635 | DIFF_SYMBOL_CONTEXT_MARKER, line, len, 0); |
89cb73a1 BW |
1636 | return; |
1637 | } | |
1638 | ep += 2; /* skip over @@ */ | |
1639 | ||
1640 | /* The hunk header in fraginfo color */ | |
f7c3b4e2 JS |
1641 | if (ecbdata->opt->flags.dual_color_diffed_diffs) |
1642 | strbuf_addstr(&msgbuf, reverse); | |
cedc61a9 | 1643 | strbuf_addstr(&msgbuf, frag); |
430be36e TG |
1644 | if (ecbdata->opt->flags.suppress_hunk_header_line_count) |
1645 | strbuf_add(&msgbuf, atat, sizeof(atat)); | |
1646 | else | |
1647 | strbuf_add(&msgbuf, line, ep - line); | |
cedc61a9 | 1648 | strbuf_addstr(&msgbuf, reset); |
2efcc977 BY |
1649 | |
1650 | /* | |
1651 | * trailing "\r\n" | |
1652 | */ | |
1653 | for ( ; i < 3; i++) | |
1654 | if (line[len - i] == '\r' || line[len - i] == '\n') | |
1655 | len--; | |
89cb73a1 BW |
1656 | |
1657 | /* blank before the func header */ | |
1658 | for (cp = ep; ep - line < len; ep++) | |
1659 | if (*ep != ' ' && *ep != '\t') | |
1660 | break; | |
2efcc977 | 1661 | if (ep != cp) { |
8dbf3eb6 | 1662 | strbuf_addstr(&msgbuf, context); |
2efcc977 | 1663 | strbuf_add(&msgbuf, cp, ep - cp); |
cedc61a9 | 1664 | strbuf_addstr(&msgbuf, reset); |
2efcc977 BY |
1665 | } |
1666 | ||
1667 | if (ep < line + len) { | |
cedc61a9 | 1668 | strbuf_addstr(&msgbuf, func); |
2efcc977 | 1669 | strbuf_add(&msgbuf, ep, line + len - ep); |
cedc61a9 | 1670 | strbuf_addstr(&msgbuf, reset); |
2efcc977 | 1671 | } |
89cb73a1 | 1672 | |
2efcc977 | 1673 | strbuf_add(&msgbuf, line + len, org_len - len); |
dfb7728f | 1674 | strbuf_complete_line(&msgbuf); |
68abc6f1 | 1675 | emit_diff_symbol(ecbdata->opt, |
091f8e28 | 1676 | DIFF_SYMBOL_CONTEXT_FRAGINFO, msgbuf.buf, msgbuf.len, 0); |
2efcc977 | 1677 | strbuf_release(&msgbuf); |
89cb73a1 BW |
1678 | } |
1679 | ||
3b335762 NTND |
1680 | static struct diff_tempfile *claim_diff_tempfile(void) |
1681 | { | |
479b0ae8 JK |
1682 | int i; |
1683 | for (i = 0; i < ARRAY_SIZE(diff_temp); i++) | |
1684 | if (!diff_temp[i].name) | |
1685 | return diff_temp + i; | |
033abf97 | 1686 | BUG("diff is failing to clean up its tempfiles"); |
479b0ae8 JK |
1687 | } |
1688 | ||
479b0ae8 JK |
1689 | static void remove_tempfile(void) |
1690 | { | |
1691 | int i; | |
a8344abe | 1692 | for (i = 0; i < ARRAY_SIZE(diff_temp); i++) { |
076aa2cb | 1693 | if (is_tempfile_active(diff_temp[i].tempfile)) |
284098f1 | 1694 | delete_tempfile(&diff_temp[i].tempfile); |
a8344abe NR |
1695 | diff_temp[i].name = NULL; |
1696 | } | |
479b0ae8 JK |
1697 | } |
1698 | ||
5af6ea95 | 1699 | static void add_line_count(struct strbuf *out, int count) |
6973dcae JH |
1700 | { |
1701 | switch (count) { | |
1702 | case 0: | |
5af6ea95 | 1703 | strbuf_addstr(out, "0,0"); |
6973dcae JH |
1704 | break; |
1705 | case 1: | |
5af6ea95 | 1706 | strbuf_addstr(out, "1"); |
6973dcae JH |
1707 | break; |
1708 | default: | |
5af6ea95 | 1709 | strbuf_addf(out, "1,%d", count); |
6973dcae JH |
1710 | break; |
1711 | } | |
1712 | } | |
1713 | ||
7f7ee2ff JH |
1714 | static void emit_rewrite_lines(struct emit_callback *ecb, |
1715 | int prefix, const char *data, int size) | |
6973dcae | 1716 | { |
7f7ee2ff | 1717 | const char *endp = NULL; |
7f7ee2ff JH |
1718 | |
1719 | while (0 < size) { | |
1720 | int len; | |
1721 | ||
1722 | endp = memchr(data, '\n', size); | |
1723 | len = endp ? (endp - data + 1) : size; | |
1724 | if (prefix != '+') { | |
1725 | ecb->lno_in_preimage++; | |
e04df612 | 1726 | emit_del_line(ecb, data, len); |
7f7ee2ff JH |
1727 | } else { |
1728 | ecb->lno_in_postimage++; | |
e04df612 | 1729 | emit_add_line(ecb, data, len); |
13e36ec5 | 1730 | } |
7f7ee2ff JH |
1731 | size -= len; |
1732 | data += len; | |
1733 | } | |
b9cbfde6 | 1734 | if (!endp) |
091f8e28 | 1735 | emit_diff_symbol(ecb->opt, DIFF_SYMBOL_NO_LF_EOF, NULL, 0, 0); |
6973dcae JH |
1736 | } |
1737 | ||
1738 | static void emit_rewrite_diff(const char *name_a, | |
1739 | const char *name_b, | |
1740 | struct diff_filespec *one, | |
13e36ec5 | 1741 | struct diff_filespec *two, |
d9bae1a1 JK |
1742 | struct userdiff_driver *textconv_one, |
1743 | struct userdiff_driver *textconv_two, | |
eab9a40b | 1744 | struct diff_options *o) |
6973dcae JH |
1745 | { |
1746 | int lc_a, lc_b; | |
d5625091 | 1747 | static struct strbuf a_name = STRBUF_INIT, b_name = STRBUF_INIT; |
a5a818ee | 1748 | const char *a_prefix, *b_prefix; |
840383b2 | 1749 | char *data_one, *data_two; |
3aa1f7ca | 1750 | size_t size_one, size_two; |
7f7ee2ff | 1751 | struct emit_callback ecbdata; |
5af6ea95 | 1752 | struct strbuf out = STRBUF_INIT; |
a5a818ee | 1753 | |
0d1e0e78 | 1754 | if (diff_mnemonic_prefix && o->flags.reverse_diff) { |
a5a818ee JH |
1755 | a_prefix = o->b_prefix; |
1756 | b_prefix = o->a_prefix; | |
1757 | } else { | |
1758 | a_prefix = o->a_prefix; | |
1759 | b_prefix = o->b_prefix; | |
1760 | } | |
1a9eb3b9 | 1761 | |
8a13becc JH |
1762 | name_a += (*name_a == '/'); |
1763 | name_b += (*name_b == '/'); | |
1a9eb3b9 | 1764 | |
d5625091 JH |
1765 | strbuf_reset(&a_name); |
1766 | strbuf_reset(&b_name); | |
a5a818ee JH |
1767 | quote_two_c_style(&a_name, a_prefix, name_a, 0); |
1768 | quote_two_c_style(&b_name, b_prefix, name_b, 0); | |
d5625091 | 1769 | |
6afaf807 NTND |
1770 | size_one = fill_textconv(o->repo, textconv_one, one, &data_one); |
1771 | size_two = fill_textconv(o->repo, textconv_two, two, &data_two); | |
3aa1f7ca | 1772 | |
d91ba8fa | 1773 | memset(&ecbdata, 0, sizeof(ecbdata)); |
daa0c3d9 | 1774 | ecbdata.color_diff = want_color(o->use_color); |
26d024ec | 1775 | ecbdata.ws_rule = whitespace_rule(o->repo->index, name_b); |
a3c158d4 | 1776 | ecbdata.opt = o; |
d91ba8fa JH |
1777 | if (ecbdata.ws_rule & WS_BLANK_AT_EOF) { |
1778 | mmfile_t mf1, mf2; | |
1779 | mf1.ptr = (char *)data_one; | |
1780 | mf2.ptr = (char *)data_two; | |
1781 | mf1.size = size_one; | |
1782 | mf2.size = size_two; | |
1783 | check_blank_at_eof(&mf1, &mf2, &ecbdata); | |
1784 | } | |
1785 | ecbdata.lno_in_preimage = 1; | |
1786 | ecbdata.lno_in_postimage = 1; | |
1787 | ||
3aa1f7ca JK |
1788 | lc_a = count_lines(data_one, size_one); |
1789 | lc_b = count_lines(data_two, size_two); | |
3ee8b7bf SB |
1790 | |
1791 | emit_diff_symbol(o, DIFF_SYMBOL_FILEPAIR_MINUS, | |
1792 | a_name.buf, a_name.len, 0); | |
1793 | emit_diff_symbol(o, DIFF_SYMBOL_FILEPAIR_PLUS, | |
1794 | b_name.buf, b_name.len, 0); | |
1795 | ||
5af6ea95 | 1796 | strbuf_addstr(&out, "@@ -"); |
467ddc14 | 1797 | if (!o->irreversible_delete) |
5af6ea95 | 1798 | add_line_count(&out, lc_a); |
467ddc14 | 1799 | else |
5af6ea95 SB |
1800 | strbuf_addstr(&out, "?,?"); |
1801 | strbuf_addstr(&out, " +"); | |
1802 | add_line_count(&out, lc_b); | |
1803 | strbuf_addstr(&out, " @@\n"); | |
1804 | emit_diff_symbol(o, DIFF_SYMBOL_REWRITE_DIFF, out.buf, out.len, 0); | |
1805 | strbuf_release(&out); | |
1806 | ||
467ddc14 | 1807 | if (lc_a && !o->irreversible_delete) |
d91ba8fa | 1808 | emit_rewrite_lines(&ecbdata, '-', data_one, size_one); |
6973dcae | 1809 | if (lc_b) |
d91ba8fa | 1810 | emit_rewrite_lines(&ecbdata, '+', data_two, size_two); |
b76c056b | 1811 | if (textconv_one) |
aed6ca52 | 1812 | free((char *)data_one); |
b76c056b | 1813 | if (textconv_two) |
aed6ca52 | 1814 | free((char *)data_two); |
6973dcae JH |
1815 | } |
1816 | ||
f59a59e2 JS |
1817 | struct diff_words_buffer { |
1818 | mmfile_t text; | |
071bcaab | 1819 | unsigned long alloc; |
2e5d2003 JS |
1820 | struct diff_words_orig { |
1821 | const char *begin, *end; | |
1822 | } *orig; | |
1823 | int orig_nr, orig_alloc; | |
f59a59e2 JS |
1824 | }; |
1825 | ||
1826 | static void diff_words_append(char *line, unsigned long len, | |
1827 | struct diff_words_buffer *buffer) | |
1828 | { | |
23c1575f | 1829 | ALLOC_GROW(buffer->text.ptr, buffer->text.size + len, buffer->alloc); |
f59a59e2 JS |
1830 | line++; |
1831 | len--; | |
1832 | memcpy(buffer->text.ptr + buffer->text.size, line, len); | |
1833 | buffer->text.size += len; | |
2b6a5417 | 1834 | buffer->text.ptr[buffer->text.size] = '\0'; |
f59a59e2 JS |
1835 | } |
1836 | ||
9cba13ca | 1837 | struct diff_words_style_elem { |
882749a0 TR |
1838 | const char *prefix; |
1839 | const char *suffix; | |
1840 | const char *color; /* NULL; filled in by the setup code if | |
1841 | * color is enabled */ | |
1842 | }; | |
1843 | ||
9cba13ca | 1844 | struct diff_words_style { |
882749a0 | 1845 | enum diff_words_type type; |
63a01c3f | 1846 | struct diff_words_style_elem new_word, old_word, ctx; |
882749a0 TR |
1847 | const char *newline; |
1848 | }; | |
1849 | ||
c2e86add | 1850 | static struct diff_words_style diff_words_styles[] = { |
882749a0 TR |
1851 | { DIFF_WORDS_PORCELAIN, {"+", "\n"}, {"-", "\n"}, {" ", "\n"}, "~\n" }, |
1852 | { DIFF_WORDS_PLAIN, {"{+", "+}"}, {"[-", "-]"}, {"", ""}, "\n" }, | |
1853 | { DIFF_WORDS_COLOR, {"", ""}, {"", ""}, {"", ""}, "\n" } | |
1854 | }; | |
1855 | ||
f59a59e2 | 1856 | struct diff_words_data { |
f59a59e2 | 1857 | struct diff_words_buffer minus, plus; |
2e5d2003 | 1858 | const char *current_plus; |
4297c0ae BY |
1859 | int last_minus; |
1860 | struct diff_options *opt; | |
2b6a5417 | 1861 | regex_t *word_regex; |
882749a0 TR |
1862 | enum diff_words_type type; |
1863 | struct diff_words_style *style; | |
f59a59e2 JS |
1864 | }; |
1865 | ||
bd033291 | 1866 | static int fn_out_diff_words_write_helper(struct diff_options *o, |
882749a0 TR |
1867 | struct diff_words_style_elem *st_el, |
1868 | const char *newline, | |
bd033291 | 1869 | size_t count, const char *buf) |
882749a0 | 1870 | { |
4297c0ae | 1871 | int print = 0; |
bd033291 | 1872 | struct strbuf sb = STRBUF_INIT; |
4297c0ae | 1873 | |
882749a0 TR |
1874 | while (count) { |
1875 | char *p = memchr(buf, '\n', count); | |
4297c0ae | 1876 | if (print) |
bd033291 SB |
1877 | strbuf_addstr(&sb, diff_line_prefix(o)); |
1878 | ||
882749a0 | 1879 | if (p != buf) { |
bd033291 SB |
1880 | const char *reset = st_el->color && *st_el->color ? |
1881 | GIT_COLOR_RESET : NULL; | |
1882 | if (st_el->color && *st_el->color) | |
1883 | strbuf_addstr(&sb, st_el->color); | |
1884 | strbuf_addstr(&sb, st_el->prefix); | |
1885 | strbuf_add(&sb, buf, p ? p - buf : count); | |
1886 | strbuf_addstr(&sb, st_el->suffix); | |
1887 | if (reset) | |
1888 | strbuf_addstr(&sb, reset); | |
882749a0 TR |
1889 | } |
1890 | if (!p) | |
bd033291 SB |
1891 | goto out; |
1892 | ||
1893 | strbuf_addstr(&sb, newline); | |
882749a0 TR |
1894 | count -= p + 1 - buf; |
1895 | buf = p + 1; | |
4297c0ae | 1896 | print = 1; |
bd033291 SB |
1897 | if (count) { |
1898 | emit_diff_symbol(o, DIFF_SYMBOL_WORD_DIFF, | |
1899 | sb.buf, sb.len, 0); | |
1900 | strbuf_reset(&sb); | |
1901 | } | |
882749a0 | 1902 | } |
bd033291 SB |
1903 | |
1904 | out: | |
1905 | if (sb.len) | |
1906 | emit_diff_symbol(o, DIFF_SYMBOL_WORD_DIFF, | |
1907 | sb.buf, sb.len, 0); | |
1908 | strbuf_release(&sb); | |
882749a0 TR |
1909 | return 0; |
1910 | } | |
1911 | ||
4297c0ae BY |
1912 | /* |
1913 | * '--color-words' algorithm can be described as: | |
1914 | * | |
5621760f | 1915 | * 1. collect the minus/plus lines of a diff hunk, divided into |
4297c0ae BY |
1916 | * minus-lines and plus-lines; |
1917 | * | |
1918 | * 2. break both minus-lines and plus-lines into words and | |
1919 | * place them into two mmfile_t with one word for each line; | |
1920 | * | |
1921 | * 3. use xdiff to run diff on the two mmfile_t to get the words level diff; | |
1922 | * | |
1923 | * And for the common parts of the both file, we output the plus side text. | |
1924 | * diff_words->current_plus is used to trace the current position of the plus file | |
1925 | * which printed. diff_words->last_minus is used to trace the last minus word | |
1926 | * printed. | |
1927 | * | |
1928 | * For '--graph' to work with '--color-words', we need to output the graph prefix | |
1929 | * on each line of color words output. Generally, there are two conditions on | |
1930 | * which we should output the prefix. | |
1931 | * | |
1932 | * 1. diff_words->last_minus == 0 && | |
1933 | * diff_words->current_plus == diff_words->plus.text.ptr | |
1934 | * | |
1935 | * that is: the plus text must start as a new line, and if there is no minus | |
1936 | * word printed, a graph prefix must be printed. | |
1937 | * | |
1938 | * 2. diff_words->current_plus > diff_words->plus.text.ptr && | |
1939 | * *(diff_words->current_plus - 1) == '\n' | |
1940 | * | |
1941 | * that is: a graph prefix must be printed following a '\n' | |
1942 | */ | |
1943 | static int color_words_output_graph_prefix(struct diff_words_data *diff_words) | |
1944 | { | |
1945 | if ((diff_words->last_minus == 0 && | |
1946 | diff_words->current_plus == diff_words->plus.text.ptr) || | |
1947 | (diff_words->current_plus > diff_words->plus.text.ptr && | |
1948 | *(diff_words->current_plus - 1) == '\n')) { | |
1949 | return 1; | |
1950 | } else { | |
1951 | return 0; | |
1952 | } | |
1953 | } | |
1954 | ||
7c61e25f JK |
1955 | static void fn_out_diff_words_aux(void *priv, |
1956 | long minus_first, long minus_len, | |
1957 | long plus_first, long plus_len, | |
1958 | const char *func, long funclen) | |
f59a59e2 | 1959 | { |
f59a59e2 | 1960 | struct diff_words_data *diff_words = priv; |
882749a0 | 1961 | struct diff_words_style *style = diff_words->style; |
2e5d2003 | 1962 | const char *minus_begin, *minus_end, *plus_begin, *plus_end; |
4297c0ae | 1963 | struct diff_options *opt = diff_words->opt; |
30997bb8 | 1964 | const char *line_prefix; |
f59a59e2 | 1965 | |
4297c0ae | 1966 | assert(opt); |
30997bb8 | 1967 | line_prefix = diff_line_prefix(opt); |
4297c0ae | 1968 | |
2e5d2003 JS |
1969 | /* POSIX requires that first be decremented by one if len == 0... */ |
1970 | if (minus_len) { | |
1971 | minus_begin = diff_words->minus.orig[minus_first].begin; | |
1972 | minus_end = | |
1973 | diff_words->minus.orig[minus_first + minus_len - 1].end; | |
1974 | } else | |
1975 | minus_begin = minus_end = | |
1976 | diff_words->minus.orig[minus_first].end; | |
1977 | ||
1978 | if (plus_len) { | |
1979 | plus_begin = diff_words->plus.orig[plus_first].begin; | |
1980 | plus_end = diff_words->plus.orig[plus_first + plus_len - 1].end; | |
1981 | } else | |
1982 | plus_begin = plus_end = diff_words->plus.orig[plus_first].end; | |
1983 | ||
4297c0ae BY |
1984 | if (color_words_output_graph_prefix(diff_words)) { |
1985 | fputs(line_prefix, diff_words->opt->file); | |
1986 | } | |
1987 | if (diff_words->current_plus != plus_begin) { | |
bd033291 | 1988 | fn_out_diff_words_write_helper(diff_words->opt, |
882749a0 TR |
1989 | &style->ctx, style->newline, |
1990 | plus_begin - diff_words->current_plus, | |
bd033291 | 1991 | diff_words->current_plus); |
4297c0ae BY |
1992 | } |
1993 | if (minus_begin != minus_end) { | |
bd033291 | 1994 | fn_out_diff_words_write_helper(diff_words->opt, |
63a01c3f | 1995 | &style->old_word, style->newline, |
bd033291 | 1996 | minus_end - minus_begin, minus_begin); |
4297c0ae BY |
1997 | } |
1998 | if (plus_begin != plus_end) { | |
bd033291 | 1999 | fn_out_diff_words_write_helper(diff_words->opt, |
63a01c3f | 2000 | &style->new_word, style->newline, |
bd033291 | 2001 | plus_end - plus_begin, plus_begin); |
4297c0ae | 2002 | } |
2e5d2003 JS |
2003 | |
2004 | diff_words->current_plus = plus_end; | |
4297c0ae | 2005 | diff_words->last_minus = minus_first; |
f59a59e2 JS |
2006 | } |
2007 | ||
2b6a5417 JS |
2008 | /* This function starts looking at *begin, and returns 0 iff a word was found. */ |
2009 | static int find_word_boundaries(mmfile_t *buffer, regex_t *word_regex, | |
2010 | int *begin, int *end) | |
2011 | { | |
0324e8fc | 2012 | while (word_regex && *begin < buffer->size) { |
2b6a5417 | 2013 | regmatch_t match[1]; |
b7d36ffc JS |
2014 | if (!regexec_buf(word_regex, buffer->ptr + *begin, |
2015 | buffer->size - *begin, 1, match, 0)) { | |
2b6a5417 JS |
2016 | char *p = memchr(buffer->ptr + *begin + match[0].rm_so, |
2017 | '\n', match[0].rm_eo - match[0].rm_so); | |
2018 | *end = p ? p - buffer->ptr : match[0].rm_eo + *begin; | |
2019 | *begin += match[0].rm_so; | |
0324e8fc PW |
2020 | if (*begin == *end) |
2021 | (*begin)++; | |
2022 | else | |
2023 | return *begin > *end; | |
2024 | } else { | |
2025 | return -1; | |
2b6a5417 | 2026 | } |
f59a59e2 JS |
2027 | } |
2028 | ||
2b6a5417 JS |
2029 | /* find the next word */ |
2030 | while (*begin < buffer->size && isspace(buffer->ptr[*begin])) | |
2031 | (*begin)++; | |
2032 | if (*begin >= buffer->size) | |
2033 | return -1; | |
f59a59e2 | 2034 | |
2b6a5417 JS |
2035 | /* find the end of the word */ |
2036 | *end = *begin + 1; | |
2037 | while (*end < buffer->size && !isspace(buffer->ptr[*end])) | |
2038 | (*end)++; | |
2039 | ||
2040 | return 0; | |
f59a59e2 JS |
2041 | } |
2042 | ||
23c1575f | 2043 | /* |
2e5d2003 JS |
2044 | * This function splits the words in buffer->text, stores the list with |
2045 | * newline separator into out, and saves the offsets of the original words | |
2046 | * in buffer->orig. | |
23c1575f | 2047 | */ |
2b6a5417 JS |
2048 | static void diff_words_fill(struct diff_words_buffer *buffer, mmfile_t *out, |
2049 | regex_t *word_regex) | |
f59a59e2 | 2050 | { |
2e5d2003 | 2051 | int i, j; |
2b6a5417 | 2052 | long alloc = 0; |
f59a59e2 | 2053 | |
2e5d2003 | 2054 | out->size = 0; |
2b6a5417 | 2055 | out->ptr = NULL; |
f59a59e2 | 2056 | |
2e5d2003 JS |
2057 | /* fake an empty "0th" word */ |
2058 | ALLOC_GROW(buffer->orig, 1, buffer->orig_alloc); | |
2059 | buffer->orig[0].begin = buffer->orig[0].end = buffer->text.ptr; | |
2060 | buffer->orig_nr = 1; | |
2061 | ||
2062 | for (i = 0; i < buffer->text.size; i++) { | |
2b6a5417 JS |
2063 | if (find_word_boundaries(&buffer->text, word_regex, &i, &j)) |
2064 | return; | |
2e5d2003 JS |
2065 | |
2066 | /* store original boundaries */ | |
2067 | ALLOC_GROW(buffer->orig, buffer->orig_nr + 1, | |
2068 | buffer->orig_alloc); | |
2069 | buffer->orig[buffer->orig_nr].begin = buffer->text.ptr + i; | |
2070 | buffer->orig[buffer->orig_nr].end = buffer->text.ptr + j; | |
2071 | buffer->orig_nr++; | |
2072 | ||
2073 | /* store one word */ | |
2b6a5417 | 2074 | ALLOC_GROW(out->ptr, out->size + j - i + 1, alloc); |
2e5d2003 JS |
2075 | memcpy(out->ptr + out->size, buffer->text.ptr + i, j - i); |
2076 | out->ptr[out->size + j - i] = '\n'; | |
2077 | out->size += j - i + 1; | |
2078 | ||
2079 | i = j - 1; | |
f59a59e2 JS |
2080 | } |
2081 | } | |
2082 | ||
2083 | /* this executes the word diff on the accumulated buffers */ | |
2084 | static void diff_words_show(struct diff_words_data *diff_words) | |
2085 | { | |
2086 | xpparam_t xpp; | |
2087 | xdemitconf_t xecfg; | |
f59a59e2 | 2088 | mmfile_t minus, plus; |
882749a0 | 2089 | struct diff_words_style *style = diff_words->style; |
f59a59e2 | 2090 | |
4297c0ae | 2091 | struct diff_options *opt = diff_words->opt; |
30997bb8 | 2092 | const char *line_prefix; |
4297c0ae BY |
2093 | |
2094 | assert(opt); | |
30997bb8 | 2095 | line_prefix = diff_line_prefix(opt); |
4297c0ae | 2096 | |
2e5d2003 JS |
2097 | /* special case: only removal */ |
2098 | if (!diff_words->plus.text.size) { | |
bd033291 SB |
2099 | emit_diff_symbol(diff_words->opt, DIFF_SYMBOL_WORD_DIFF, |
2100 | line_prefix, strlen(line_prefix), 0); | |
2101 | fn_out_diff_words_write_helper(diff_words->opt, | |
63a01c3f | 2102 | &style->old_word, style->newline, |
4297c0ae | 2103 | diff_words->minus.text.size, |
bd033291 | 2104 | diff_words->minus.text.ptr); |
2e5d2003 JS |
2105 | diff_words->minus.text.size = 0; |
2106 | return; | |
2107 | } | |
2108 | ||
2109 | diff_words->current_plus = diff_words->plus.text.ptr; | |
4297c0ae | 2110 | diff_words->last_minus = 0; |
f59a59e2 | 2111 | |
9ccd0a88 | 2112 | memset(&xpp, 0, sizeof(xpp)); |
30b25010 | 2113 | memset(&xecfg, 0, sizeof(xecfg)); |
2b6a5417 JS |
2114 | diff_words_fill(&diff_words->minus, &minus, diff_words->word_regex); |
2115 | diff_words_fill(&diff_words->plus, &plus, diff_words->word_regex); | |
582aa00b | 2116 | xpp.flags = 0; |
2b6a5417 | 2117 | /* as only the hunk header will be parsed, we need a 0-context */ |
2e5d2003 | 2118 | xecfg.ctxlen = 0; |
7c61e25f | 2119 | if (xdi_diff_outf(&minus, &plus, fn_out_diff_words_aux, NULL, |
9346d6d1 | 2120 | diff_words, &xpp, &xecfg)) |
3efb9880 | 2121 | die("unable to generate word diff"); |
f59a59e2 JS |
2122 | free(minus.ptr); |
2123 | free(plus.ptr); | |
2e5d2003 | 2124 | if (diff_words->current_plus != diff_words->plus.text.ptr + |
4297c0ae BY |
2125 | diff_words->plus.text.size) { |
2126 | if (color_words_output_graph_prefix(diff_words)) | |
bd033291 SB |
2127 | emit_diff_symbol(diff_words->opt, DIFF_SYMBOL_WORD_DIFF, |
2128 | line_prefix, strlen(line_prefix), 0); | |
2129 | fn_out_diff_words_write_helper(diff_words->opt, | |
882749a0 | 2130 | &style->ctx, style->newline, |
2e5d2003 | 2131 | diff_words->plus.text.ptr + diff_words->plus.text.size |
bd033291 | 2132 | - diff_words->current_plus, diff_words->current_plus); |
4297c0ae | 2133 | } |
f59a59e2 | 2134 | diff_words->minus.text.size = diff_words->plus.text.size = 0; |
f59a59e2 JS |
2135 | } |
2136 | ||
76fd2828 JH |
2137 | /* In "color-words" mode, show word-diff of words accumulated in the buffer */ |
2138 | static void diff_words_flush(struct emit_callback *ecbdata) | |
2139 | { | |
e6e045f8 SB |
2140 | struct diff_options *wo = ecbdata->diff_words->opt; |
2141 | ||
76fd2828 JH |
2142 | if (ecbdata->diff_words->minus.text.size || |
2143 | ecbdata->diff_words->plus.text.size) | |
2144 | diff_words_show(ecbdata->diff_words); | |
e6e045f8 SB |
2145 | |
2146 | if (wo->emitted_symbols) { | |
2147 | struct diff_options *o = ecbdata->opt; | |
2148 | struct emitted_diff_symbols *wol = wo->emitted_symbols; | |
2149 | int i; | |
2150 | ||
2151 | /* | |
2152 | * NEEDSWORK: | |
2153 | * Instead of appending each, concat all words to a line? | |
2154 | */ | |
2155 | for (i = 0; i < wol->nr; i++) | |
2156 | append_emitted_diff_symbol(o, &wol->buf[i]); | |
2157 | ||
2158 | for (i = 0; i < wol->nr; i++) | |
2159 | free((void *)wol->buf[i].line); | |
2160 | ||
2161 | wol->nr = 0; | |
2162 | } | |
76fd2828 JH |
2163 | } |
2164 | ||
acd00ea0 NTND |
2165 | static void diff_filespec_load_driver(struct diff_filespec *one, |
2166 | struct index_state *istate) | |
77d1a520 TR |
2167 | { |
2168 | /* Use already-loaded driver */ | |
2169 | if (one->driver) | |
2170 | return; | |
2171 | ||
2172 | if (S_ISREG(one->mode)) | |
acd00ea0 | 2173 | one->driver = userdiff_find_by_path(istate, one->path); |
77d1a520 TR |
2174 | |
2175 | /* Fallback to default settings */ | |
2176 | if (!one->driver) | |
2177 | one->driver = userdiff_find_by_name("default"); | |
2178 | } | |
2179 | ||
acd00ea0 NTND |
2180 | static const char *userdiff_word_regex(struct diff_filespec *one, |
2181 | struct index_state *istate) | |
77d1a520 | 2182 | { |
acd00ea0 | 2183 | diff_filespec_load_driver(one, istate); |
77d1a520 TR |
2184 | return one->driver->word_regex; |
2185 | } | |
2186 | ||
2187 | static void init_diff_words_data(struct emit_callback *ecbdata, | |
6440d341 | 2188 | struct diff_options *orig_opts, |
77d1a520 TR |
2189 | struct diff_filespec *one, |
2190 | struct diff_filespec *two) | |
2191 | { | |
2192 | int i; | |
6440d341 TR |
2193 | struct diff_options *o = xmalloc(sizeof(struct diff_options)); |
2194 | memcpy(o, orig_opts, sizeof(struct diff_options)); | |
77d1a520 | 2195 | |
ca56dadb | 2196 | CALLOC_ARRAY(ecbdata->diff_words, 1); |
77d1a520 TR |
2197 | ecbdata->diff_words->type = o->word_diff; |
2198 | ecbdata->diff_words->opt = o; | |
e6e045f8 SB |
2199 | |
2200 | if (orig_opts->emitted_symbols) | |
ca56dadb | 2201 | CALLOC_ARRAY(o->emitted_symbols, 1); |
e6e045f8 | 2202 | |
77d1a520 | 2203 | if (!o->word_regex) |
acd00ea0 | 2204 | o->word_regex = userdiff_word_regex(one, o->repo->index); |
77d1a520 | 2205 | if (!o->word_regex) |
acd00ea0 | 2206 | o->word_regex = userdiff_word_regex(two, o->repo->index); |
77d1a520 TR |
2207 | if (!o->word_regex) |
2208 | o->word_regex = diff_word_regex_cfg; | |
2209 | if (o->word_regex) { | |
2210 | ecbdata->diff_words->word_regex = (regex_t *) | |
2211 | xmalloc(sizeof(regex_t)); | |
2212 | if (regcomp(ecbdata->diff_words->word_regex, | |
2213 | o->word_regex, | |
2214 | REG_EXTENDED | REG_NEWLINE)) | |
1a07e59c NTND |
2215 | die("invalid regular expression: %s", |
2216 | o->word_regex); | |
77d1a520 TR |
2217 | } |
2218 | for (i = 0; i < ARRAY_SIZE(diff_words_styles); i++) { | |
2219 | if (o->word_diff == diff_words_styles[i].type) { | |
2220 | ecbdata->diff_words->style = | |
2221 | &diff_words_styles[i]; | |
2222 | break; | |
2223 | } | |
2224 | } | |
2225 | if (want_color(o->use_color)) { | |
2226 | struct diff_words_style *st = ecbdata->diff_words->style; | |
63a01c3f BW |
2227 | st->old_word.color = diff_get_color_opt(o, DIFF_FILE_OLD); |
2228 | st->new_word.color = diff_get_color_opt(o, DIFF_FILE_NEW); | |
8dbf3eb6 | 2229 | st->ctx.color = diff_get_color_opt(o, DIFF_CONTEXT); |
77d1a520 TR |
2230 | } |
2231 | } | |
2232 | ||
f59a59e2 JS |
2233 | static void free_diff_words_data(struct emit_callback *ecbdata) |
2234 | { | |
2235 | if (ecbdata->diff_words) { | |
76fd2828 | 2236 | diff_words_flush(ecbdata); |
77e56d55 | 2237 | free_emitted_diff_symbols(ecbdata->diff_words->opt->emitted_symbols); |
6440d341 | 2238 | free (ecbdata->diff_words->opt); |
8e0f7003 | 2239 | free (ecbdata->diff_words->minus.text.ptr); |
2e5d2003 | 2240 | free (ecbdata->diff_words->minus.orig); |
8e0f7003 | 2241 | free (ecbdata->diff_words->plus.text.ptr); |
2e5d2003 | 2242 | free (ecbdata->diff_words->plus.orig); |
ef5644ea BC |
2243 | if (ecbdata->diff_words->word_regex) { |
2244 | regfree(ecbdata->diff_words->word_regex); | |
2245 | free(ecbdata->diff_words->word_regex); | |
2246 | } | |
6a83d902 | 2247 | FREE_AND_NULL(ecbdata->diff_words); |
f59a59e2 JS |
2248 | } |
2249 | } | |
2250 | ||
ce436973 | 2251 | const char *diff_get_color(int diff_use_color, enum color_diff ix) |
cd112cef | 2252 | { |
daa0c3d9 | 2253 | if (want_color(diff_use_color)) |
50f575fc LT |
2254 | return diff_colors[ix]; |
2255 | return ""; | |
cd112cef JS |
2256 | } |
2257 | ||
f1922234 JK |
2258 | const char *diff_line_prefix(struct diff_options *opt) |
2259 | { | |
2260 | struct strbuf *msgbuf; | |
2261 | if (!opt->output_prefix) | |
2262 | return ""; | |
2263 | ||
2264 | msgbuf = opt->output_prefix(opt, opt->output_prefix_data); | |
2265 | return msgbuf->buf; | |
2266 | } | |
2267 | ||
19b9046e | 2268 | static unsigned long sane_truncate_line(char *line, unsigned long len) |
23707811 JH |
2269 | { |
2270 | const char *cp; | |
2271 | unsigned long allot; | |
2272 | size_t l = len; | |
2273 | ||
23707811 JH |
2274 | cp = line; |
2275 | allot = l; | |
2276 | while (0 < l) { | |
2277 | (void) utf8_width(&cp, &l); | |
2278 | if (!cp) | |
2279 | break; /* truncated in the middle? */ | |
2280 | } | |
2281 | return allot - l; | |
2282 | } | |
2283 | ||
d68fe26f | 2284 | static void find_lno(const char *line, struct emit_callback *ecbdata) |
690ed843 | 2285 | { |
d68fe26f JH |
2286 | const char *p; |
2287 | ecbdata->lno_in_preimage = 0; | |
2288 | ecbdata->lno_in_postimage = 0; | |
2289 | p = strchr(line, '-'); | |
690ed843 | 2290 | if (!p) |
d68fe26f JH |
2291 | return; /* cannot happen */ |
2292 | ecbdata->lno_in_preimage = strtol(p + 1, NULL, 10); | |
2293 | p = strchr(p, '+'); | |
2294 | if (!p) | |
2295 | return; /* cannot happen */ | |
2296 | ecbdata->lno_in_postimage = strtol(p + 1, NULL, 10); | |
690ed843 JH |
2297 | } |
2298 | ||
a8d5eb6d | 2299 | static int fn_out_consume(void *priv, char *line, unsigned long len) |
6973dcae | 2300 | { |
6973dcae | 2301 | struct emit_callback *ecbdata = priv; |
7be57610 | 2302 | struct diff_options *o = ecbdata->opt; |
6973dcae | 2303 | |
ba16233c SB |
2304 | o->found_changes = 1; |
2305 | ||
3e97c7c6 | 2306 | if (ecbdata->header) { |
a29b0a13 SB |
2307 | emit_diff_symbol(o, DIFF_SYMBOL_HEADER, |
2308 | ecbdata->header->buf, ecbdata->header->len, 0); | |
3e97c7c6 GB |
2309 | strbuf_reset(ecbdata->header); |
2310 | ecbdata->header = NULL; | |
2311 | } | |
34a5e1a2 | 2312 | |
6973dcae | 2313 | if (ecbdata->label_path[0]) { |
3ee8b7bf SB |
2314 | emit_diff_symbol(o, DIFF_SYMBOL_FILEPAIR_MINUS, |
2315 | ecbdata->label_path[0], | |
2316 | strlen(ecbdata->label_path[0]), 0); | |
2317 | emit_diff_symbol(o, DIFF_SYMBOL_FILEPAIR_PLUS, | |
2318 | ecbdata->label_path[1], | |
2319 | strlen(ecbdata->label_path[1]), 0); | |
6973dcae JH |
2320 | ecbdata->label_path[0] = ecbdata->label_path[1] = NULL; |
2321 | } | |
cd112cef | 2322 | |
a624eaa7 JM |
2323 | if (diff_suppress_blank_empty |
2324 | && len == 2 && line[0] == ' ' && line[1] == '\n') { | |
2325 | line[0] = '\n'; | |
2326 | len = 1; | |
2327 | } | |
2328 | ||
b8d9c1a6 | 2329 | if (line[0] == '@') { |
76fd2828 JH |
2330 | if (ecbdata->diff_words) |
2331 | diff_words_flush(ecbdata); | |
19b9046e | 2332 | len = sane_truncate_line(line, len); |
d68fe26f | 2333 | find_lno(line, ecbdata); |
89cb73a1 | 2334 | emit_hunk_header(ecbdata, line, len); |
a8d5eb6d | 2335 | return 0; |
cd112cef | 2336 | } |
448c3ef1 | 2337 | |
448c3ef1 | 2338 | if (ecbdata->diff_words) { |
ff958679 SB |
2339 | enum diff_symbol s = |
2340 | ecbdata->diff_words->type == DIFF_WORDS_PORCELAIN ? | |
2341 | DIFF_SYMBOL_WORDS_PORCELAIN : DIFF_SYMBOL_WORDS; | |
448c3ef1 JH |
2342 | if (line[0] == '-') { |
2343 | diff_words_append(line, len, | |
2344 | &ecbdata->diff_words->minus); | |
a8d5eb6d | 2345 | return 0; |
448c3ef1 JH |
2346 | } else if (line[0] == '+') { |
2347 | diff_words_append(line, len, | |
2348 | &ecbdata->diff_words->plus); | |
a8d5eb6d | 2349 | return 0; |
59556548 | 2350 | } else if (starts_with(line, "\\ ")) { |
c7c2bc0a TR |
2351 | /* |
2352 | * Eat the "no newline at eof" marker as if we | |
2353 | * saw a "+" or "-" line with nothing on it, | |
2354 | * and return without diff_words_flush() to | |
2355 | * defer processing. If this is the end of | |
2356 | * preimage, more "+" lines may come after it. | |
2357 | */ | |
a8d5eb6d | 2358 | return 0; |
448c3ef1 | 2359 | } |
76fd2828 | 2360 | diff_words_flush(ecbdata); |
ff958679 | 2361 | emit_diff_symbol(o, s, line, len, 0); |
a8d5eb6d | 2362 | return 0; |
448c3ef1 | 2363 | } |
448c3ef1 | 2364 | |
0e383e18 JH |
2365 | switch (line[0]) { |
2366 | case '+': | |
d68fe26f | 2367 | ecbdata->lno_in_postimage++; |
e04df612 | 2368 | emit_add_line(ecbdata, line + 1, len - 1); |
0e383e18 JH |
2369 | break; |
2370 | case '-': | |
2371 | ecbdata->lno_in_preimage++; | |
e04df612 | 2372 | emit_del_line(ecbdata, line + 1, len - 1); |
0e383e18 JH |
2373 | break; |
2374 | case ' ': | |
2375 | ecbdata->lno_in_postimage++; | |
2376 | ecbdata->lno_in_preimage++; | |
e04df612 | 2377 | emit_context_line(ecbdata, line + 1, len - 1); |
0e383e18 JH |
2378 | break; |
2379 | default: | |
2380 | /* incomplete line at the end */ | |
2381 | ecbdata->lno_in_preimage++; | |
f2bb1218 SB |
2382 | emit_diff_symbol(o, DIFF_SYMBOL_CONTEXT_INCOMPLETE, |
2383 | line, len, 0); | |
0e383e18 | 2384 | break; |
448c3ef1 | 2385 | } |
a8d5eb6d | 2386 | return 0; |
6973dcae JH |
2387 | } |
2388 | ||
c905cbc4 | 2389 | static void pprint_rename(struct strbuf *name, const char *a, const char *b) |
6973dcae | 2390 | { |
63a01c3f BW |
2391 | const char *old_name = a; |
2392 | const char *new_name = b; | |
6973dcae | 2393 | int pfx_length, sfx_length; |
dd281f09 | 2394 | int pfx_adjust_for_slash; |
6973dcae JH |
2395 | int len_a = strlen(a); |
2396 | int len_b = strlen(b); | |
663af342 | 2397 | int a_midlen, b_midlen; |
e5bfbf9b AJ |
2398 | int qlen_a = quote_c_style(a, NULL, NULL, 0); |
2399 | int qlen_b = quote_c_style(b, NULL, NULL, 0); | |
2400 | ||
2401 | if (qlen_a || qlen_b) { | |
c905cbc4 NTND |
2402 | quote_c_style(a, name, NULL, 0); |
2403 | strbuf_addstr(name, " => "); | |
2404 | quote_c_style(b, name, NULL, 0); | |
2405 | return; | |
e5bfbf9b | 2406 | } |
6973dcae JH |
2407 | |
2408 | /* Find common prefix */ | |
2409 | pfx_length = 0; | |
63a01c3f BW |
2410 | while (*old_name && *new_name && *old_name == *new_name) { |
2411 | if (*old_name == '/') | |
2412 | pfx_length = old_name - a + 1; | |
2413 | old_name++; | |
2414 | new_name++; | |
6973dcae JH |
2415 | } |
2416 | ||
2417 | /* Find common suffix */ | |
63a01c3f BW |
2418 | old_name = a + len_a; |
2419 | new_name = b + len_b; | |
6973dcae | 2420 | sfx_length = 0; |
d020e27f | 2421 | /* |
dd281f09 TR |
2422 | * If there is a common prefix, it must end in a slash. In |
2423 | * that case we let this loop run 1 into the prefix to see the | |
2424 | * same slash. | |
2425 | * | |
2426 | * If there is no common prefix, we cannot do this as it would | |
2427 | * underrun the input strings. | |
d020e27f | 2428 | */ |
dd281f09 | 2429 | pfx_adjust_for_slash = (pfx_length ? 1 : 0); |
63a01c3f BW |
2430 | while (a + pfx_length - pfx_adjust_for_slash <= old_name && |
2431 | b + pfx_length - pfx_adjust_for_slash <= new_name && | |
2432 | *old_name == *new_name) { | |
2433 | if (*old_name == '/') | |
2434 | sfx_length = len_a - (old_name - a); | |
2435 | old_name--; | |
2436 | new_name--; | |
6973dcae JH |
2437 | } |
2438 | ||
2439 | /* | |
2440 | * pfx{mid-a => mid-b}sfx | |
2441 | * {pfx-a => pfx-b}sfx | |
2442 | * pfx{sfx-a => sfx-b} | |
2443 | * name-a => name-b | |
2444 | */ | |
663af342 PH |
2445 | a_midlen = len_a - pfx_length - sfx_length; |
2446 | b_midlen = len_b - pfx_length - sfx_length; | |
2447 | if (a_midlen < 0) | |
2448 | a_midlen = 0; | |
2449 | if (b_midlen < 0) | |
2450 | b_midlen = 0; | |
2451 | ||
c905cbc4 | 2452 | strbuf_grow(name, pfx_length + a_midlen + b_midlen + sfx_length + 7); |
6973dcae | 2453 | if (pfx_length + sfx_length) { |
c905cbc4 NTND |
2454 | strbuf_add(name, a, pfx_length); |
2455 | strbuf_addch(name, '{'); | |
6973dcae | 2456 | } |
c905cbc4 NTND |
2457 | strbuf_add(name, a + pfx_length, a_midlen); |
2458 | strbuf_addstr(name, " => "); | |
2459 | strbuf_add(name, b + pfx_length, b_midlen); | |
663af342 | 2460 | if (pfx_length + sfx_length) { |
c905cbc4 NTND |
2461 | strbuf_addch(name, '}'); |
2462 | strbuf_add(name, a + len_a - sfx_length, sfx_length); | |
6973dcae | 2463 | } |
6973dcae JH |
2464 | } |
2465 | ||
6973dcae JH |
2466 | static struct diffstat_file *diffstat_add(struct diffstat_t *diffstat, |
2467 | const char *name_a, | |
2468 | const char *name_b) | |
2469 | { | |
2470 | struct diffstat_file *x; | |
ca56dadb | 2471 | CALLOC_ARRAY(x, 1); |
4c960a43 | 2472 | ALLOC_GROW(diffstat->files, diffstat->nr + 1, diffstat->alloc); |
6973dcae JH |
2473 | diffstat->files[diffstat->nr++] = x; |
2474 | if (name_b) { | |
f604652e JH |
2475 | x->from_name = xstrdup(name_a); |
2476 | x->name = xstrdup(name_b); | |
6973dcae JH |
2477 | x->is_renamed = 1; |
2478 | } | |
f604652e JH |
2479 | else { |
2480 | x->from_name = NULL; | |
9befac47 | 2481 | x->name = xstrdup(name_a); |
f604652e | 2482 | } |
6973dcae JH |
2483 | return x; |
2484 | } | |
2485 | ||
a8d5eb6d | 2486 | static int diffstat_consume(void *priv, char *line, unsigned long len) |
6973dcae JH |
2487 | { |
2488 | struct diffstat_t *diffstat = priv; | |
2489 | struct diffstat_file *x = diffstat->files[diffstat->nr - 1]; | |
2490 | ||
2491 | if (line[0] == '+') | |
2492 | x->added++; | |
2493 | else if (line[0] == '-') | |
2494 | x->deleted++; | |
a8d5eb6d | 2495 | return 0; |
6973dcae JH |
2496 | } |
2497 | ||
698ce6f8 | 2498 | const char mime_boundary_leader[] = "------------"; |
6973dcae | 2499 | |
a2540023 JH |
2500 | static int scale_linear(int it, int width, int max_change) |
2501 | { | |
2eeeef24 JH |
2502 | if (!it) |
2503 | return 0; | |
a2540023 | 2504 | /* |
2eeeef24 JH |
2505 | * make sure that at least one '-' or '+' is printed if |
2506 | * there is any change to this path. The easiest way is to | |
15beaaa3 | 2507 | * scale linearly as if the allotted width is one column shorter |
2eeeef24 | 2508 | * than it is, and then add 1 to the result. |
a2540023 | 2509 | */ |
2eeeef24 | 2510 | return 1 + (it * (width - 1) / max_change); |
a2540023 JH |
2511 | } |
2512 | ||
0911c475 SB |
2513 | static void show_graph(struct strbuf *out, char ch, int cnt, |
2514 | const char *set, const char *reset) | |
a2540023 JH |
2515 | { |
2516 | if (cnt <= 0) | |
2517 | return; | |
0911c475 SB |
2518 | strbuf_addstr(out, set); |
2519 | strbuf_addchars(out, ch, cnt); | |
2520 | strbuf_addstr(out, reset); | |
a2540023 JH |
2521 | } |
2522 | ||
f604652e JH |
2523 | static void fill_print_name(struct diffstat_file *file) |
2524 | { | |
c905cbc4 | 2525 | struct strbuf pname = STRBUF_INIT; |
f604652e JH |
2526 | |
2527 | if (file->print_name) | |
2528 | return; | |
2529 | ||
c905cbc4 NTND |
2530 | if (file->is_renamed) |
2531 | pprint_rename(&pname, file->from_name, file->name); | |
2532 | else | |
2533 | quote_c_style(file->name, &pname, NULL, 0); | |
2534 | ||
ddf88fa6 NTND |
2535 | if (file->comments) |
2536 | strbuf_addf(&pname, " (%s)", file->comments); | |
2537 | ||
c905cbc4 | 2538 | file->print_name = strbuf_detach(&pname, NULL); |
f604652e JH |
2539 | } |
2540 | ||
0911c475 SB |
2541 | static void print_stat_summary_inserts_deletes(struct diff_options *options, |
2542 | int files, int insertions, int deletions) | |
7f814632 NTND |
2543 | { |
2544 | struct strbuf sb = STRBUF_INIT; | |
7f814632 NTND |
2545 | |
2546 | if (!files) { | |
2547 | assert(insertions == 0 && deletions == 0); | |
0911c475 SB |
2548 | emit_diff_symbol(options, DIFF_SYMBOL_STATS_SUMMARY_NO_FILES, |
2549 | NULL, 0, 0); | |
2550 | return; | |
7f814632 NTND |
2551 | } |
2552 | ||
2553 | strbuf_addf(&sb, | |
218adaaa | 2554 | (files == 1) ? " %d file changed" : " %d files changed", |
7f814632 NTND |
2555 | files); |
2556 | ||
2557 | /* | |
2558 | * For binary diff, the caller may want to print "x files | |
2559 | * changed" with insertions == 0 && deletions == 0. | |
2560 | * | |
2561 | * Not omitting "0 insertions(+), 0 deletions(-)" in this case | |
2562 | * is probably less confusing (i.e skip over "2 files changed | |
2563 | * but nothing about added/removed lines? Is this a bug in Git?"). | |
2564 | */ | |
2565 | if (insertions || deletions == 0) { | |
7f814632 | 2566 | strbuf_addf(&sb, |
218adaaa | 2567 | (insertions == 1) ? ", %d insertion(+)" : ", %d insertions(+)", |
7f814632 NTND |
2568 | insertions); |
2569 | } | |
2570 | ||
2571 | if (deletions || insertions == 0) { | |
7f814632 | 2572 | strbuf_addf(&sb, |
218adaaa | 2573 | (deletions == 1) ? ", %d deletion(-)" : ", %d deletions(-)", |
7f814632 NTND |
2574 | deletions); |
2575 | } | |
2576 | strbuf_addch(&sb, '\n'); | |
0911c475 SB |
2577 | emit_diff_symbol(options, DIFF_SYMBOL_STATS_SUMMARY_INSERTS_DELETES, |
2578 | sb.buf, sb.len, 0); | |
7f814632 | 2579 | strbuf_release(&sb); |
0911c475 SB |
2580 | } |
2581 | ||
2582 | void print_stat_summary(FILE *fp, int files, | |
2583 | int insertions, int deletions) | |
2584 | { | |
2585 | struct diff_options o; | |
2586 | memset(&o, 0, sizeof(o)); | |
2587 | o.file = fp; | |
2588 | ||
2589 | print_stat_summary_inserts_deletes(&o, files, insertions, deletions); | |
7f814632 NTND |
2590 | } |
2591 | ||
4b25d091 | 2592 | static void show_stats(struct diffstat_t *data, struct diff_options *options) |
6973dcae | 2593 | { |
eb3a9dd3 | 2594 | int i, len, add, del, adds = 0, dels = 0; |
0974c117 | 2595 | uintmax_t max_change = 0, max_len = 0; |
dc801e71 ZJS |
2596 | int total_files = data->nr, count; |
2597 | int width, name_width, graph_width, number_width = 0, bin_width = 0; | |
c0aa335c | 2598 | const char *reset, *add_c, *del_c; |
e5f85df8 | 2599 | int extra_shown = 0; |
0911c475 SB |
2600 | const char *line_prefix = diff_line_prefix(options); |
2601 | struct strbuf out = STRBUF_INIT; | |
6973dcae JH |
2602 | |
2603 | if (data->nr == 0) | |
2604 | return; | |
2605 | ||
808e1db2 | 2606 | count = options->stat_count ? options->stat_count : data->nr; |
a2540023 | 2607 | |
8f67f8ae | 2608 | reset = diff_get_color_opt(options, DIFF_RESET); |
8f67f8ae PH |
2609 | add_c = diff_get_color_opt(options, DIFF_FILE_NEW); |
2610 | del_c = diff_get_color_opt(options, DIFF_FILE_OLD); | |
785f7432 | 2611 | |
1b058bc3 ZJS |
2612 | /* |
2613 | * Find the longest filename and max number of changes | |
2614 | */ | |
808e1db2 | 2615 | for (i = 0; (i < count) && (i < data->nr); i++) { |
6973dcae | 2616 | struct diffstat_file *file = data->files[i]; |
0974c117 | 2617 | uintmax_t change = file->added + file->deleted; |
af0ed819 JH |
2618 | |
2619 | if (!file->is_interesting && (change == 0)) { | |
808e1db2 | 2620 | count++; /* not shown == room for one more */ |
358e460e MG |
2621 | continue; |
2622 | } | |
f604652e JH |
2623 | fill_print_name(file); |
2624 | len = strlen(file->print_name); | |
6973dcae JH |
2625 | if (max_len < len) |
2626 | max_len = len; | |
2627 | ||
dc801e71 ZJS |
2628 | if (file->is_unmerged) { |
2629 | /* "Unmerged" is 8 characters */ | |
2630 | bin_width = bin_width < 8 ? 8 : bin_width; | |
6973dcae | 2631 | continue; |
dc801e71 ZJS |
2632 | } |
2633 | if (file->is_binary) { | |
2634 | /* "Bin XXX -> YYY bytes" */ | |
2635 | int w = 14 + decimal_width(file->added) | |
2636 | + decimal_width(file->deleted); | |
2637 | bin_width = bin_width < w ? w : bin_width; | |
2638 | /* Display change counts aligned with "Bin" */ | |
2639 | number_width = 3; | |
2640 | continue; | |
2641 | } | |
2642 | ||
a2540023 JH |
2643 | if (max_change < change) |
2644 | max_change = change; | |
6973dcae | 2645 | } |
a20d3c0d | 2646 | count = i; /* where we can stop scanning in data->files[] */ |
6973dcae | 2647 | |
1b058bc3 ZJS |
2648 | /* |
2649 | * We have width = stat_width or term_columns() columns total. | |
2650 | * We want a maximum of min(max_len, stat_name_width) for the name part. | |
969fe57b | 2651 | * We want a maximum of min(max_change, stat_graph_width) for the +- part. |
1b058bc3 ZJS |
2652 | * We also need 1 for " " and 4 + decimal_width(max_change) |
2653 | * for " | NNNN " and one the empty column at the end, altogether | |
2654 | * 6 + decimal_width(max_change). | |
2655 | * | |
2656 | * If there's not enough space, we will use the smaller of | |
2657 | * stat_name_width (if set) and 5/8*width for the filename, | |
969fe57b ZJS |
2658 | * and the rest for constant elements + graph part, but no more |
2659 | * than stat_graph_width for the graph part. | |
1b058bc3 ZJS |
2660 | * (5/8 gives 50 for filename and 30 for the constant parts + graph |
2661 | * for the standard terminal size). | |
a2540023 | 2662 | * |
1b058bc3 ZJS |
2663 | * In other words: stat_width limits the maximum width, and |
2664 | * stat_name_width fixes the maximum width of the filename, | |
2665 | * and is also used to divide available columns if there | |
2666 | * aren't enough. | |
dc801e71 ZJS |
2667 | * |
2668 | * Binary files are displayed with "Bin XXX -> YYY bytes" | |
2669 | * instead of the change count and graph. This part is treated | |
2670 | * similarly to the graph part, except that it is not | |
41ccfdd9 | 2671 | * "scaled". If total width is too small to accommodate the |
dc801e71 ZJS |
2672 | * guaranteed minimum width of the filename part and the |
2673 | * separators and this message, this message will "overflow" | |
2674 | * making the line longer than the maximum width. | |
a2540023 | 2675 | */ |
1b058bc3 ZJS |
2676 | |
2677 | if (options->stat_width == -1) | |
cd48dadb | 2678 | width = term_columns() - strlen(line_prefix); |
a2540023 | 2679 | else |
1b058bc3 | 2680 | width = options->stat_width ? options->stat_width : 80; |
dc801e71 ZJS |
2681 | number_width = decimal_width(max_change) > number_width ? |
2682 | decimal_width(max_change) : number_width; | |
a2540023 | 2683 | |
df44483a ZJS |
2684 | if (options->stat_graph_width == -1) |
2685 | options->stat_graph_width = diff_stat_graph_width; | |
a2540023 | 2686 | |
1b058bc3 ZJS |
2687 | /* |
2688 | * Guarantee 3/8*16==6 for the graph part | |
2689 | * and 5/8*16==10 for the filename part | |
2690 | */ | |
2691 | if (width < 16 + 6 + number_width) | |
2692 | width = 16 + 6 + number_width; | |
2693 | ||
2694 | /* | |
2695 | * First assign sizes that are wanted, ignoring available width. | |
dc801e71 ZJS |
2696 | * strlen("Bin XXX -> YYY bytes") == bin_width, and the part |
2697 | * starting from "XXX" should fit in graph_width. | |
1b058bc3 | 2698 | */ |
dc801e71 ZJS |
2699 | graph_width = max_change + 4 > bin_width ? max_change : bin_width - 4; |
2700 | if (options->stat_graph_width && | |
2701 | options->stat_graph_width < graph_width) | |
2702 | graph_width = options->stat_graph_width; | |
2703 | ||
1b058bc3 ZJS |
2704 | name_width = (options->stat_name_width > 0 && |
2705 | options->stat_name_width < max_len) ? | |
2706 | options->stat_name_width : max_len; | |
2707 | ||
2708 | /* | |
2709 | * Adjust adjustable widths not to exceed maximum width | |
2710 | */ | |
2711 | if (name_width + number_width + 6 + graph_width > width) { | |
678c5741 | 2712 | if (graph_width > width * 3/8 - number_width - 6) { |
1b058bc3 | 2713 | graph_width = width * 3/8 - number_width - 6; |
678c5741 LP |
2714 | if (graph_width < 6) |
2715 | graph_width = 6; | |
2716 | } | |
2717 | ||
969fe57b ZJS |
2718 | if (options->stat_graph_width && |
2719 | graph_width > options->stat_graph_width) | |
2720 | graph_width = options->stat_graph_width; | |
1b058bc3 ZJS |
2721 | if (name_width > width - number_width - 6 - graph_width) |
2722 | name_width = width - number_width - 6 - graph_width; | |
2723 | else | |
2724 | graph_width = width - number_width - 6 - name_width; | |
2725 | } | |
2726 | ||
2727 | /* | |
2728 | * From here name_width is the width of the name area, | |
2729 | * and graph_width is the width of the graph area. | |
2730 | * max_change is used to scale graph properly. | |
2731 | */ | |
808e1db2 | 2732 | for (i = 0; i < count; i++) { |
d2543b8e | 2733 | const char *prefix = ""; |
af0ed819 JH |
2734 | struct diffstat_file *file = data->files[i]; |
2735 | char *name = file->print_name; | |
2736 | uintmax_t added = file->added; | |
2737 | uintmax_t deleted = file->deleted; | |
a2540023 | 2738 | int name_len; |
6973dcae | 2739 | |
a20d3c0d | 2740 | if (!file->is_interesting && (added + deleted == 0)) |
358e460e | 2741 | continue; |
a20d3c0d | 2742 | |
6973dcae JH |
2743 | /* |
2744 | * "scale" the filename | |
2745 | */ | |
a2540023 JH |
2746 | len = name_width; |
2747 | name_len = strlen(name); | |
2748 | if (name_width < name_len) { | |
6973dcae JH |
2749 | char *slash; |
2750 | prefix = "..."; | |
a2540023 JH |
2751 | len -= 3; |
2752 | name += name_len - len; | |
6973dcae JH |
2753 | slash = strchr(name, '/'); |
2754 | if (slash) | |
2755 | name = slash; | |
2756 | } | |
6973dcae | 2757 | |
af0ed819 | 2758 | if (file->is_binary) { |
0911c475 SB |
2759 | strbuf_addf(&out, " %s%-*s |", prefix, len, name); |
2760 | strbuf_addf(&out, " %*s", number_width, "Bin"); | |
e18872b2 | 2761 | if (!added && !deleted) { |
0911c475 SB |
2762 | strbuf_addch(&out, '\n'); |
2763 | emit_diff_symbol(options, DIFF_SYMBOL_STATS_LINE, | |
2764 | out.buf, out.len, 0); | |
2765 | strbuf_reset(&out); | |
e18872b2 ZJS |
2766 | continue; |
2767 | } | |
0911c475 | 2768 | strbuf_addf(&out, " %s%"PRIuMAX"%s", |
0974c117 | 2769 | del_c, deleted, reset); |
0911c475 SB |
2770 | strbuf_addstr(&out, " -> "); |
2771 | strbuf_addf(&out, "%s%"PRIuMAX"%s", | |
0974c117 | 2772 | add_c, added, reset); |
0911c475 SB |
2773 | strbuf_addstr(&out, " bytes\n"); |
2774 | emit_diff_symbol(options, DIFF_SYMBOL_STATS_LINE, | |
2775 | out.buf, out.len, 0); | |
2776 | strbuf_reset(&out); | |
f604652e | 2777 | continue; |
6973dcae | 2778 | } |
af0ed819 | 2779 | else if (file->is_unmerged) { |
0911c475 SB |
2780 | strbuf_addf(&out, " %s%-*s |", prefix, len, name); |
2781 | strbuf_addstr(&out, " Unmerged\n"); | |
2782 | emit_diff_symbol(options, DIFF_SYMBOL_STATS_LINE, | |
2783 | out.buf, out.len, 0); | |
2784 | strbuf_reset(&out); | |
f604652e | 2785 | continue; |
6973dcae | 2786 | } |
6973dcae | 2787 | |
a2540023 JH |
2788 | /* |
2789 | * scale the add/delete | |
2790 | */ | |
6973dcae JH |
2791 | add = added; |
2792 | del = deleted; | |
6973dcae | 2793 | |
1b058bc3 | 2794 | if (graph_width <= max_change) { |
d3c9cf32 | 2795 | int total = scale_linear(add + del, graph_width, max_change); |
2eeeef24 JH |
2796 | if (total < 2 && add && del) |
2797 | /* width >= 2 due to the sanity check */ | |
2798 | total = 2; | |
2799 | if (add < del) { | |
1b058bc3 | 2800 | add = scale_linear(add, graph_width, max_change); |
2eeeef24 JH |
2801 | del = total - add; |
2802 | } else { | |
1b058bc3 | 2803 | del = scale_linear(del, graph_width, max_change); |
2eeeef24 JH |
2804 | add = total - del; |
2805 | } | |
6973dcae | 2806 | } |
0911c475 SB |
2807 | strbuf_addf(&out, " %s%-*s |", prefix, len, name); |
2808 | strbuf_addf(&out, " %*"PRIuMAX"%s", | |
dc801e71 ZJS |
2809 | number_width, added + deleted, |
2810 | added + deleted ? " " : ""); | |
0911c475 SB |
2811 | show_graph(&out, '+', add, add_c, reset); |
2812 | show_graph(&out, '-', del, del_c, reset); | |
2813 | strbuf_addch(&out, '\n'); | |
2814 | emit_diff_symbol(options, DIFF_SYMBOL_STATS_LINE, | |
2815 | out.buf, out.len, 0); | |
2816 | strbuf_reset(&out); | |
c0c77734 | 2817 | } |
a20d3c0d JH |
2818 | |
2819 | for (i = 0; i < data->nr; i++) { | |
af0ed819 JH |
2820 | struct diffstat_file *file = data->files[i]; |
2821 | uintmax_t added = file->added; | |
2822 | uintmax_t deleted = file->deleted; | |
82dfc2c4 JH |
2823 | |
2824 | if (file->is_unmerged || | |
2825 | (!file->is_interesting && (added + deleted == 0))) { | |
808e1db2 MG |
2826 | total_files--; |
2827 | continue; | |
2828 | } | |
a20d3c0d | 2829 | |
82dfc2c4 | 2830 | if (!file->is_binary) { |
a20d3c0d JH |
2831 | adds += added; |
2832 | dels += deleted; | |
2833 | } | |
2834 | if (i < count) | |
2835 | continue; | |
e5f85df8 | 2836 | if (!extra_shown) |
0911c475 SB |
2837 | emit_diff_symbol(options, |
2838 | DIFF_SYMBOL_STATS_SUMMARY_ABBREV, | |
2839 | NULL, 0, 0); | |
e5f85df8 | 2840 | extra_shown = 1; |
808e1db2 | 2841 | } |
0911c475 SB |
2842 | |
2843 | print_stat_summary_inserts_deletes(options, total_files, adds, dels); | |
5a612017 | 2844 | strbuf_release(&out); |
6973dcae JH |
2845 | } |
2846 | ||
2775d92c | 2847 | static void show_shortstats(struct diffstat_t *data, struct diff_options *options) |
ebd124c6 NP |
2848 | { |
2849 | int i, adds = 0, dels = 0, total_files = data->nr; | |
2850 | ||
2851 | if (data->nr == 0) | |
2852 | return; | |
2853 | ||
2854 | for (i = 0; i < data->nr; i++) { | |
e18872b2 | 2855 | int added = data->files[i]->added; |
0911c475 | 2856 | int deleted = data->files[i]->deleted; |
e18872b2 | 2857 | |
20c8cde4 JH |
2858 | if (data->files[i]->is_unmerged || |
2859 | (!data->files[i]->is_interesting && (added + deleted == 0))) { | |
e18872b2 | 2860 | total_files--; |
de9658b5 | 2861 | } else if (!data->files[i]->is_binary) { /* don't count bytes */ |
e18872b2 ZJS |
2862 | adds += added; |
2863 | dels += deleted; | |
ebd124c6 | 2864 | } |
ebd124c6 | 2865 | } |
0911c475 | 2866 | print_stat_summary_inserts_deletes(options, total_files, adds, dels); |
ebd124c6 NP |
2867 | } |
2868 | ||
4b25d091 | 2869 | static void show_numstat(struct diffstat_t *data, struct diff_options *options) |
74e2abe5 JH |
2870 | { |
2871 | int i; | |
2872 | ||
f604652e JH |
2873 | if (data->nr == 0) |
2874 | return; | |
2875 | ||
74e2abe5 JH |
2876 | for (i = 0; i < data->nr; i++) { |
2877 | struct diffstat_file *file = data->files[i]; | |
2878 | ||
30997bb8 | 2879 | fprintf(options->file, "%s", diff_line_prefix(options)); |
7be57610 | 2880 | |
bfddbc5e | 2881 | if (file->is_binary) |
c0c77734 | 2882 | fprintf(options->file, "-\t-\t"); |
bfddbc5e | 2883 | else |
c0c77734 | 2884 | fprintf(options->file, |
0974c117 JK |
2885 | "%"PRIuMAX"\t%"PRIuMAX"\t", |
2886 | file->added, file->deleted); | |
f604652e JH |
2887 | if (options->line_termination) { |
2888 | fill_print_name(file); | |
2889 | if (!file->is_renamed) | |
c0c77734 | 2890 | write_name_quoted(file->name, options->file, |
f604652e JH |
2891 | options->line_termination); |
2892 | else { | |
c0c77734 DB |
2893 | fputs(file->print_name, options->file); |
2894 | putc(options->line_termination, options->file); | |
f604652e | 2895 | } |
663af342 | 2896 | } else { |
f604652e | 2897 | if (file->is_renamed) { |
c0c77734 DB |
2898 | putc('\0', options->file); |
2899 | write_name_quoted(file->from_name, options->file, '\0'); | |
f604652e | 2900 | } |
c0c77734 | 2901 | write_name_quoted(file->name, options->file, '\0'); |
663af342 | 2902 | } |
74e2abe5 JH |
2903 | } |
2904 | } | |
2905 | ||
c04a7155 JH |
2906 | struct dirstat_file { |
2907 | const char *name; | |
2908 | unsigned long changed; | |
7df7c019 LT |
2909 | }; |
2910 | ||
c04a7155 JH |
2911 | struct dirstat_dir { |
2912 | struct dirstat_file *files; | |
712d2c7d | 2913 | int alloc, nr, permille, cumulative; |
c04a7155 JH |
2914 | }; |
2915 | ||
7be57610 BY |
2916 | static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir, |
2917 | unsigned long changed, const char *base, int baselen) | |
7df7c019 | 2918 | { |
585c0e2e | 2919 | unsigned long sum_changes = 0; |
7df7c019 | 2920 | unsigned int sources = 0; |
30997bb8 | 2921 | const char *line_prefix = diff_line_prefix(opt); |
7df7c019 LT |
2922 | |
2923 | while (dir->nr) { | |
c04a7155 | 2924 | struct dirstat_file *f = dir->files; |
7df7c019 | 2925 | int namelen = strlen(f->name); |
585c0e2e | 2926 | unsigned long changes; |
7df7c019 LT |
2927 | char *slash; |
2928 | ||
2929 | if (namelen < baselen) | |
2930 | break; | |
2931 | if (memcmp(f->name, base, baselen)) | |
2932 | break; | |
2933 | slash = strchr(f->name + baselen, '/'); | |
2934 | if (slash) { | |
2935 | int newbaselen = slash + 1 - f->name; | |
585c0e2e | 2936 | changes = gather_dirstat(opt, dir, changed, f->name, newbaselen); |
7df7c019 LT |
2937 | sources++; |
2938 | } else { | |
585c0e2e | 2939 | changes = f->changed; |
7df7c019 LT |
2940 | dir->files++; |
2941 | dir->nr--; | |
2942 | sources += 2; | |
2943 | } | |
585c0e2e | 2944 | sum_changes += changes; |
7df7c019 LT |
2945 | } |
2946 | ||
2947 | /* | |
2948 | * We don't report dirstat's for | |
2949 | * - the top level | |
2950 | * - or cases where everything came from a single directory | |
2951 | * under this directory (sources == 1). | |
2952 | */ | |
2953 | if (baselen && sources != 1) { | |
585c0e2e BW |
2954 | if (sum_changes) { |
2955 | int permille = sum_changes * 1000 / changed; | |
712d2c7d | 2956 | if (permille >= dir->permille) { |
7be57610 | 2957 | fprintf(opt->file, "%s%4d.%01d%% %.*s\n", line_prefix, |
712d2c7d | 2958 | permille / 10, permille % 10, baselen, base); |
7df7c019 LT |
2959 | if (!dir->cumulative) |
2960 | return 0; | |
2961 | } | |
2962 | } | |
2963 | } | |
585c0e2e | 2964 | return sum_changes; |
7df7c019 LT |
2965 | } |
2966 | ||
441bca0b LT |
2967 | static int dirstat_compare(const void *_a, const void *_b) |
2968 | { | |
2969 | const struct dirstat_file *a = _a; | |
2970 | const struct dirstat_file *b = _b; | |
2971 | return strcmp(a->name, b->name); | |
2972 | } | |
2973 | ||
c04a7155 | 2974 | static void show_dirstat(struct diff_options *options) |
7df7c019 LT |
2975 | { |
2976 | int i; | |
2977 | unsigned long changed; | |
c04a7155 JH |
2978 | struct dirstat_dir dir; |
2979 | struct diff_queue_struct *q = &diff_queued_diff; | |
2980 | ||
2981 | dir.files = NULL; | |
2982 | dir.alloc = 0; | |
2983 | dir.nr = 0; | |
712d2c7d | 2984 | dir.permille = options->dirstat_permille; |
0d1e0e78 | 2985 | dir.cumulative = options->flags.dirstat_cumulative; |
7df7c019 | 2986 | |
7df7c019 | 2987 | changed = 0; |
c04a7155 JH |
2988 | for (i = 0; i < q->nr; i++) { |
2989 | struct diff_filepair *p = q->queue[i]; | |
2990 | const char *name; | |
2991 | unsigned long copied, added, damage; | |
1c37e86a JT |
2992 | struct diff_populate_filespec_options dpf_options = { |
2993 | .check_size_only = 1, | |
2994 | }; | |
c04a7155 | 2995 | |
2ca86714 | 2996 | name = p->two->path ? p->two->path : p->one->path; |
c04a7155 | 2997 | |
d9f62dfa JK |
2998 | if (p->one->oid_valid && p->two->oid_valid && |
2999 | oideq(&p->one->oid, &p->two->oid)) { | |
2ff3a803 JH |
3000 | /* |
3001 | * The SHA1 has not changed, so pre-/post-content is | |
3002 | * identical. We can therefore skip looking at the | |
3003 | * file contents altogether. | |
3004 | */ | |
3005 | damage = 0; | |
3006 | goto found_damage; | |
3007 | } | |
3008 | ||
0d1e0e78 | 3009 | if (options->flags.dirstat_by_file) { |
0133dab7 JH |
3010 | /* |
3011 | * In --dirstat-by-file mode, we don't really need to | |
3012 | * look at the actual file contents at all. | |
3013 | * The fact that the SHA1 changed is enough for us to | |
3014 | * add this file to the list of results | |
3015 | * (with each file contributing equal damage). | |
3016 | */ | |
2ff3a803 | 3017 | damage = 1; |
0133dab7 JH |
3018 | goto found_damage; |
3019 | } | |
c04a7155 JH |
3020 | |
3021 | if (DIFF_FILE_VALID(p->one) && DIFF_FILE_VALID(p->two)) { | |
1c37e86a JT |
3022 | diff_populate_filespec(options->repo, p->one, NULL); |
3023 | diff_populate_filespec(options->repo, p->two, NULL); | |
b78ea5fc NTND |
3024 | diffcore_count_changes(options->repo, |
3025 | p->one, p->two, NULL, NULL, | |
c04a7155 JH |
3026 | &copied, &added); |
3027 | diff_free_filespec_data(p->one); | |
3028 | diff_free_filespec_data(p->two); | |
3029 | } else if (DIFF_FILE_VALID(p->one)) { | |
1c37e86a | 3030 | diff_populate_filespec(options->repo, p->one, &dpf_options); |
c04a7155 JH |
3031 | copied = added = 0; |
3032 | diff_free_filespec_data(p->one); | |
3033 | } else if (DIFF_FILE_VALID(p->two)) { | |
1c37e86a | 3034 | diff_populate_filespec(options->repo, p->two, &dpf_options); |
c04a7155 JH |
3035 | copied = 0; |
3036 | added = p->two->size; | |
3037 | diff_free_filespec_data(p->two); | |
3038 | } else | |
2b0b551d | 3039 | continue; |
c04a7155 JH |
3040 | |
3041 | /* | |
3042 | * Original minus copied is the removed material, | |
3043 | * added is the new material. They are both damages | |
0133dab7 | 3044 | * made to the preimage. |
2ff3a803 JH |
3045 | * If the resulting damage is zero, we know that |
3046 | * diffcore_count_changes() considers the two entries to | |
d9f62dfa | 3047 | * be identical, but since the oid changed, we |
2ff3a803 JH |
3048 | * know that there must have been _some_ kind of change, |
3049 | * so we force all entries to have damage > 0. | |
c04a7155 JH |
3050 | */ |
3051 | damage = (p->one->size - copied) + added; | |
2ff3a803 | 3052 | if (!damage) |
fd33777b | 3053 | damage = 1; |
c04a7155 | 3054 | |
0133dab7 | 3055 | found_damage: |
c04a7155 JH |
3056 | ALLOC_GROW(dir.files, dir.nr + 1, dir.alloc); |
3057 | dir.files[dir.nr].name = name; | |
3058 | dir.files[dir.nr].changed = damage; | |
3059 | changed += damage; | |
3060 | dir.nr++; | |
7df7c019 LT |
3061 | } |
3062 | ||
3063 | /* This can happen even with many files, if everything was renames */ | |
3064 | if (!changed) | |
3065 | return; | |
3066 | ||
3067 | /* Show all directories with more than x% of the changes */ | |
9ed0d8d6 | 3068 | QSORT(dir.files, dir.nr, dirstat_compare); |
7be57610 | 3069 | gather_dirstat(options, &dir, changed, "", 0); |
7df7c019 LT |
3070 | } |
3071 | ||
1c57a627 JH |
3072 | static void show_dirstat_by_line(struct diffstat_t *data, struct diff_options *options) |
3073 | { | |
3074 | int i; | |
3075 | unsigned long changed; | |
3076 | struct dirstat_dir dir; | |
3077 | ||
3078 | if (data->nr == 0) | |
3079 | return; | |
3080 | ||
3081 | dir.files = NULL; | |
3082 | dir.alloc = 0; | |
3083 | dir.nr = 0; | |
3084 | dir.permille = options->dirstat_permille; | |
0d1e0e78 | 3085 | dir.cumulative = options->flags.dirstat_cumulative; |
1c57a627 JH |
3086 | |
3087 | changed = 0; | |
3088 | for (i = 0; i < data->nr; i++) { | |
3089 | struct diffstat_file *file = data->files[i]; | |
3090 | unsigned long damage = file->added + file->deleted; | |
3091 | if (file->is_binary) | |
3092 | /* | |
3093 | * binary files counts bytes, not lines. Must find some | |
3094 | * way to normalize binary bytes vs. textual lines. | |
3095 | * The following heuristic assumes that there are 64 | |
3096 | * bytes per "line". | |
3097 | * This is stupid and ugly, but very cheap... | |
3098 | */ | |
42c78a21 | 3099 | damage = DIV_ROUND_UP(damage, 64); |
1c57a627 JH |
3100 | ALLOC_GROW(dir.files, dir.nr + 1, dir.alloc); |
3101 | dir.files[dir.nr].name = file->name; | |
3102 | dir.files[dir.nr].changed = damage; | |
3103 | changed += damage; | |
3104 | dir.nr++; | |
3105 | } | |
3106 | ||
3107 | /* This can happen even with many files, if everything was renames */ | |
3108 | if (!changed) | |
3109 | return; | |
3110 | ||
3111 | /* Show all directories with more than x% of the changes */ | |
9ed0d8d6 | 3112 | QSORT(dir.files, dir.nr, dirstat_compare); |
1c57a627 JH |
3113 | gather_dirstat(options, &dir, changed, "", 0); |
3114 | } | |
3115 | ||
1cf3d5db MR |
3116 | static void free_diffstat_file(struct diffstat_file *f) |
3117 | { | |
3118 | free(f->print_name); | |
3119 | free(f->name); | |
3120 | free(f->from_name); | |
3121 | free(f); | |
3122 | } | |
3123 | ||
e4cb659e | 3124 | void free_diffstat_info(struct diffstat_t *diffstat) |
f604652e JH |
3125 | { |
3126 | int i; | |
1cf3d5db MR |
3127 | for (i = 0; i < diffstat->nr; i++) |
3128 | free_diffstat_file(diffstat->files[i]); | |
f604652e JH |
3129 | free(diffstat->files); |
3130 | } | |
3131 | ||
88246898 | 3132 | struct checkdiff_t { |
88246898 | 3133 | const char *filename; |
1ba111d1 | 3134 | int lineno; |
a757c646 | 3135 | int conflict_marker_size; |
1ba111d1 | 3136 | struct diff_options *o; |
cf1b7869 | 3137 | unsigned ws_rule; |
62c64895 | 3138 | unsigned status; |
88246898 JS |
3139 | }; |
3140 | ||
a757c646 | 3141 | static int is_conflict_marker(const char *line, int marker_size, unsigned long len) |
04954043 JH |
3142 | { |
3143 | char firstchar; | |
3144 | int cnt; | |
3145 | ||
a757c646 | 3146 | if (len < marker_size + 1) |
04954043 JH |
3147 | return 0; |
3148 | firstchar = line[0]; | |
3149 | switch (firstchar) { | |
a757c646 | 3150 | case '=': case '>': case '<': case '|': |
04954043 JH |
3151 | break; |
3152 | default: | |
3153 | return 0; | |
3154 | } | |
a757c646 | 3155 | for (cnt = 1; cnt < marker_size; cnt++) |
04954043 JH |
3156 | if (line[cnt] != firstchar) |
3157 | return 0; | |
15beaaa3 | 3158 | /* line[1] through line[marker_size-1] are same as firstchar */ |
a757c646 | 3159 | if (len < marker_size + 1 || !isspace(line[marker_size])) |
04954043 | 3160 | return 0; |
04954043 JH |
3161 | return 1; |
3162 | } | |
3163 | ||
75ab7630 JK |
3164 | static void checkdiff_consume_hunk(void *priv, |
3165 | long ob, long on, long nb, long nn, | |
3166 | const char *func, long funclen) | |
3167 | ||
3168 | { | |
3169 | struct checkdiff_t *data = priv; | |
3170 | data->lineno = nb - 1; | |
3171 | } | |
3172 | ||
a8d5eb6d | 3173 | static int checkdiff_consume(void *priv, char *line, unsigned long len) |
88246898 JS |
3174 | { |
3175 | struct checkdiff_t *data = priv; | |
a757c646 | 3176 | int marker_size = data->conflict_marker_size; |
f1c96261 JK |
3177 | const char *ws = diff_get_color(data->o->use_color, DIFF_WHITESPACE); |
3178 | const char *reset = diff_get_color(data->o->use_color, DIFF_RESET); | |
3179 | const char *set = diff_get_color(data->o->use_color, DIFF_FILE_NEW); | |
c1795bb0 | 3180 | char *err; |
30997bb8 | 3181 | const char *line_prefix; |
7be57610 BY |
3182 | |
3183 | assert(data->o); | |
30997bb8 | 3184 | line_prefix = diff_line_prefix(data->o); |
88246898 JS |
3185 | |
3186 | if (line[0] == '+') { | |
18374e58 | 3187 | unsigned bad; |
0ef617f4 | 3188 | data->lineno++; |
a757c646 | 3189 | if (is_conflict_marker(line + 1, marker_size, len - 1)) { |
04954043 JH |
3190 | data->status |= 1; |
3191 | fprintf(data->o->file, | |
7be57610 BY |
3192 | "%s%s:%d: leftover conflict marker\n", |
3193 | line_prefix, data->filename, data->lineno); | |
04954043 | 3194 | } |
8f8841e9 | 3195 | bad = ws_check(line + 1, len - 1, data->ws_rule); |
18374e58 | 3196 | if (!bad) |
a8d5eb6d | 3197 | return 0; |
18374e58 JH |
3198 | data->status |= bad; |
3199 | err = whitespace_error_string(bad); | |
7be57610 BY |
3200 | fprintf(data->o->file, "%s%s:%d: %s.\n", |
3201 | line_prefix, data->filename, data->lineno, err); | |
c1795bb0 | 3202 | free(err); |
a3c158d4 | 3203 | emit_line(data->o, set, reset, line, 1); |
8f8841e9 | 3204 | ws_check_emit(line + 1, len - 1, data->ws_rule, |
1ba111d1 | 3205 | data->o->file, set, reset, ws); |
877f23cc | 3206 | } else if (line[0] == ' ') { |
88246898 | 3207 | data->lineno++; |
88246898 | 3208 | } |
a8d5eb6d | 3209 | return 0; |
88246898 JS |
3210 | } |
3211 | ||
0660626c JH |
3212 | static unsigned char *deflate_it(char *data, |
3213 | unsigned long size, | |
3214 | unsigned long *result_size) | |
051308f6 | 3215 | { |
0660626c JH |
3216 | int bound; |
3217 | unsigned char *deflated; | |
ef49a7a0 | 3218 | git_zstream stream; |
0660626c | 3219 | |
55bb5c91 | 3220 | git_deflate_init(&stream, zlib_compression_level); |
225a6f10 | 3221 | bound = git_deflate_bound(&stream, size); |
0660626c JH |
3222 | deflated = xmalloc(bound); |
3223 | stream.next_out = deflated; | |
3224 | stream.avail_out = bound; | |
3225 | ||
3226 | stream.next_in = (unsigned char *)data; | |
3227 | stream.avail_in = size; | |
55bb5c91 | 3228 | while (git_deflate(&stream, Z_FINISH) == Z_OK) |
0660626c | 3229 | ; /* nothing */ |
55bb5c91 | 3230 | git_deflate_end(&stream); |
0660626c JH |
3231 | *result_size = stream.total_out; |
3232 | return deflated; | |
051308f6 JH |
3233 | } |
3234 | ||
4eed0ebd SB |
3235 | static void emit_binary_diff_body(struct diff_options *o, |
3236 | mmfile_t *one, mmfile_t *two) | |
051308f6 | 3237 | { |
0660626c JH |
3238 | void *cp; |
3239 | void *delta; | |
3240 | void *deflated; | |
3241 | void *data; | |
3242 | unsigned long orig_size; | |
3243 | unsigned long delta_size; | |
3244 | unsigned long deflate_size; | |
3245 | unsigned long data_size; | |
051308f6 | 3246 | |
0660626c JH |
3247 | /* We could do deflated delta, or we could do just deflated two, |
3248 | * whichever is smaller. | |
051308f6 | 3249 | */ |
0660626c JH |
3250 | delta = NULL; |
3251 | deflated = deflate_it(two->ptr, two->size, &deflate_size); | |
3252 | if (one->size && two->size) { | |
3253 | delta = diff_delta(one->ptr, one->size, | |
3254 | two->ptr, two->size, | |
3255 | &delta_size, deflate_size); | |
3256 | if (delta) { | |
3257 | void *to_free = delta; | |
3258 | orig_size = delta_size; | |
3259 | delta = deflate_it(delta, delta_size, &delta_size); | |
3260 | free(to_free); | |
051308f6 JH |
3261 | } |
3262 | } | |
051308f6 | 3263 | |
0660626c | 3264 | if (delta && delta_size < deflate_size) { |
ca473cef | 3265 | char *s = xstrfmt("%"PRIuMAX , (uintmax_t)orig_size); |
4eed0ebd SB |
3266 | emit_diff_symbol(o, DIFF_SYMBOL_BINARY_DIFF_HEADER_DELTA, |
3267 | s, strlen(s), 0); | |
3268 | free(s); | |
0660626c JH |
3269 | free(deflated); |
3270 | data = delta; | |
3271 | data_size = delta_size; | |
4eed0ebd SB |
3272 | } else { |
3273 | char *s = xstrfmt("%lu", two->size); | |
3274 | emit_diff_symbol(o, DIFF_SYMBOL_BINARY_DIFF_HEADER_LITERAL, | |
3275 | s, strlen(s), 0); | |
3276 | free(s); | |
0660626c JH |
3277 | free(delta); |
3278 | data = deflated; | |
3279 | data_size = deflate_size; | |
3280 | } | |
051308f6 | 3281 | |
0660626c JH |
3282 | /* emit data encoded in base85 */ |
3283 | cp = data; | |
3284 | while (data_size) { | |
4eed0ebd | 3285 | int len; |
0660626c | 3286 | int bytes = (52 < data_size) ? 52 : data_size; |
4eed0ebd | 3287 | char line[71]; |
0660626c | 3288 | data_size -= bytes; |
051308f6 JH |
3289 | if (bytes <= 26) |
3290 | line[0] = bytes + 'A' - 1; | |
3291 | else | |
3292 | line[0] = bytes - 26 + 'a' - 1; | |
3293 | encode_85(line + 1, cp, bytes); | |
1d7f171c | 3294 | cp = (char *) cp + bytes; |
4eed0ebd SB |
3295 | |
3296 | len = strlen(line); | |
3297 | line[len++] = '\n'; | |
3298 | line[len] = '\0'; | |
3299 | ||
3300 | emit_diff_symbol(o, DIFF_SYMBOL_BINARY_DIFF_BODY, | |
3301 | line, len, 0); | |
051308f6 | 3302 | } |
4eed0ebd | 3303 | emit_diff_symbol(o, DIFF_SYMBOL_BINARY_DIFF_FOOTER, NULL, 0, 0); |
0660626c | 3304 | free(data); |
051308f6 JH |
3305 | } |
3306 | ||
4eed0ebd SB |
3307 | static void emit_binary_diff(struct diff_options *o, |
3308 | mmfile_t *one, mmfile_t *two) | |
d4c452f0 | 3309 | { |
4eed0ebd SB |
3310 | emit_diff_symbol(o, DIFF_SYMBOL_BINARY_DIFF_HEADER, NULL, 0, 0); |
3311 | emit_binary_diff_body(o, one, two); | |
3312 | emit_binary_diff_body(o, two, one); | |
d4c452f0 JH |
3313 | } |
3314 | ||
b78ea5fc NTND |
3315 | int diff_filespec_is_binary(struct repository *r, |
3316 | struct diff_filespec *one) | |
29a3eefd | 3317 | { |
1c37e86a JT |
3318 | struct diff_populate_filespec_options dpf_options = { |
3319 | .check_binary = 1, | |
3320 | }; | |
3321 | ||
122aa6f9 | 3322 | if (one->is_binary == -1) { |
acd00ea0 | 3323 | diff_filespec_load_driver(one, r->index); |
122aa6f9 JK |
3324 | if (one->driver->binary != -1) |
3325 | one->is_binary = one->driver->binary; | |
3326 | else { | |
3327 | if (!one->data && DIFF_FILE_VALID(one)) | |
1c37e86a | 3328 | diff_populate_filespec(r, one, &dpf_options); |
6bf3b813 | 3329 | if (one->is_binary == -1 && one->data) |
122aa6f9 JK |
3330 | one->is_binary = buffer_is_binary(one->data, |
3331 | one->size); | |
3332 | if (one->is_binary == -1) | |
3333 | one->is_binary = 0; | |
3334 | } | |
3335 | } | |
29a3eefd | 3336 | return one->is_binary; |
6973dcae JH |
3337 | } |
3338 | ||
acd00ea0 NTND |
3339 | static const struct userdiff_funcname * |
3340 | diff_funcname_pattern(struct diff_options *o, struct diff_filespec *one) | |
f258475a | 3341 | { |
acd00ea0 | 3342 | diff_filespec_load_driver(one, o->repo->index); |
122aa6f9 | 3343 | return one->driver->funcname.pattern ? &one->driver->funcname : NULL; |
f258475a JH |
3344 | } |
3345 | ||
a5a818ee JH |
3346 | void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b) |
3347 | { | |
3348 | if (!options->a_prefix) | |
3349 | options->a_prefix = a; | |
3350 | if (!options->b_prefix) | |
3351 | options->b_prefix = b; | |
3352 | } | |
3353 | ||
bd7ad45b | 3354 | struct userdiff_driver *get_textconv(struct repository *r, |
acd00ea0 | 3355 | struct diff_filespec *one) |
04427ac8 JK |
3356 | { |
3357 | if (!DIFF_FILE_VALID(one)) | |
3358 | return NULL; | |
d391c0ff | 3359 | |
bd7ad45b NTND |
3360 | diff_filespec_load_driver(one, r->index); |
3361 | return userdiff_get_textconv(r, one->driver); | |
04427ac8 JK |
3362 | } |
3363 | ||
2715e8a9 JS |
3364 | static struct string_list *additional_headers(struct diff_options *o, |
3365 | const char *path) | |
95433eee EN |
3366 | { |
3367 | if (!o->additional_path_headers) | |
3368 | return NULL; | |
3369 | return strmap_get(o->additional_path_headers, path); | |
3370 | } | |
3371 | ||
2715e8a9 JS |
3372 | static void add_formatted_header(struct strbuf *msg, |
3373 | const char *header, | |
95433eee EN |
3374 | const char *line_prefix, |
3375 | const char *meta, | |
3376 | const char *reset) | |
3377 | { | |
2715e8a9 | 3378 | const char *next, *newline; |
95433eee | 3379 | |
2715e8a9 | 3380 | for (next = header; *next; next = newline) { |
95433eee EN |
3381 | newline = strchrnul(next, '\n'); |
3382 | strbuf_addf(msg, "%s%s%.*s%s\n", line_prefix, meta, | |
3383 | (int)(newline - next), next, reset); | |
3384 | if (*newline) | |
3385 | newline++; | |
3386 | } | |
3387 | } | |
3388 | ||
2715e8a9 JS |
3389 | static void add_formatted_headers(struct strbuf *msg, |
3390 | struct string_list *more_headers, | |
3391 | const char *line_prefix, | |
3392 | const char *meta, | |
3393 | const char *reset) | |
3394 | { | |
3395 | int i; | |
3396 | ||
3397 | for (i = 0; i < more_headers->nr; i++) | |
3398 | add_formatted_header(msg, more_headers->items[i].string, | |
3399 | line_prefix, meta, reset); | |
3400 | } | |
3401 | ||
9b08091c EN |
3402 | static int diff_filepair_is_phoney(struct diff_filespec *one, |
3403 | struct diff_filespec *two) | |
3404 | { | |
3405 | /* | |
3406 | * This function specifically looks for pairs injected by | |
3407 | * create_filepairs_for_header_only_notifications(). Such | |
3408 | * pairs are "phoney" in that they do not represent any | |
3409 | * content or even mode difference, but were inserted because | |
3410 | * diff_queued_diff previously had no pair associated with | |
3411 | * that path but we needed some pair to avoid losing the | |
3412 | * "remerge CONFLICT" header associated with the path. | |
3413 | */ | |
3414 | return !DIFF_FILE_VALID(one) && !DIFF_FILE_VALID(two); | |
3415 | } | |
3416 | ||
6973dcae JH |
3417 | static void builtin_diff(const char *name_a, |
3418 | const char *name_b, | |
3419 | struct diff_filespec *one, | |
3420 | struct diff_filespec *two, | |
3421 | const char *xfrm_msg, | |
296c6bb2 | 3422 | int must_show_header, |
051308f6 | 3423 | struct diff_options *o, |
6973dcae JH |
3424 | int complete_rewrite) |
3425 | { | |
3426 | mmfile_t mf1, mf2; | |
3427 | const char *lbl[2]; | |
3428 | char *a_one, *b_two; | |
d9c552f1 | 3429 | const char *meta = diff_get_color_opt(o, DIFF_METAINFO); |
8f67f8ae | 3430 | const char *reset = diff_get_color_opt(o, DIFF_RESET); |
a5a818ee | 3431 | const char *a_prefix, *b_prefix; |
d9bae1a1 JK |
3432 | struct userdiff_driver *textconv_one = NULL; |
3433 | struct userdiff_driver *textconv_two = NULL; | |
3e97c7c6 | 3434 | struct strbuf header = STRBUF_INIT; |
30997bb8 | 3435 | const char *line_prefix = diff_line_prefix(o); |
a5a818ee | 3436 | |
fd47ae6a | 3437 | diff_set_mnemonic_prefix(o, "a/", "b/"); |
0d1e0e78 | 3438 | if (o->flags.reverse_diff) { |
fd47ae6a JK |
3439 | a_prefix = o->b_prefix; |
3440 | b_prefix = o->a_prefix; | |
3441 | } else { | |
3442 | a_prefix = o->a_prefix; | |
3443 | b_prefix = o->b_prefix; | |
3444 | } | |
3445 | ||
61cfbc05 JK |
3446 | if (o->submodule_format == DIFF_SUBMODULE_LOG && |
3447 | (!one->mode || S_ISGITLINK(one->mode)) && | |
9b08091c EN |
3448 | (!two->mode || S_ISGITLINK(two->mode)) && |
3449 | (!diff_filepair_is_phoney(one, two))) { | |
180b154b | 3450 | show_submodule_diff_summary(o, one->path ? one->path : two->path, |
602a283a | 3451 | &one->oid, &two->oid, |
f3597138 | 3452 | two->dirty_submodule); |
752c0c24 | 3453 | return; |
fd47ae6a JK |
3454 | } else if (o->submodule_format == DIFF_SUBMODULE_INLINE_DIFF && |
3455 | (!one->mode || S_ISGITLINK(one->mode)) && | |
9b08091c EN |
3456 | (!two->mode || S_ISGITLINK(two->mode)) && |
3457 | (!diff_filepair_is_phoney(one, two))) { | |
f3597138 | 3458 | show_submodule_inline_diff(o, one->path ? one->path : two->path, |
fd47ae6a | 3459 | &one->oid, &two->oid, |
f3597138 | 3460 | two->dirty_submodule); |
fd47ae6a | 3461 | return; |
752c0c24 JS |
3462 | } |
3463 | ||
0d1e0e78 | 3464 | if (o->flags.allow_textconv) { |
bd7ad45b NTND |
3465 | textconv_one = get_textconv(o->repo, one); |
3466 | textconv_two = get_textconv(o->repo, two); | |
3aa1f7ca JK |
3467 | } |
3468 | ||
71b989e7 LT |
3469 | /* Never use a non-valid filename anywhere if at all possible */ |
3470 | name_a = DIFF_FILE_VALID(one) ? name_a : name_b; | |
3471 | name_b = DIFF_FILE_VALID(two) ? name_b : name_a; | |
3472 | ||
a5a818ee JH |
3473 | a_one = quote_two(a_prefix, name_a + (*name_a == '/')); |
3474 | b_two = quote_two(b_prefix, name_b + (*name_b == '/')); | |
6973dcae JH |
3475 | lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null"; |
3476 | lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null"; | |
9b08091c | 3477 | if (diff_filepair_is_phoney(one, two)) { |
95433eee | 3478 | /* |
9b08091c | 3479 | * We should only reach this point for pairs generated from |
95433eee | 3480 | * create_filepairs_for_header_only_notifications(). For |
9b08091c EN |
3481 | * these, we want to avoid the "/dev/null" special casing |
3482 | * above, because we do not want such pairs shown as either | |
95433eee EN |
3483 | * "new file" or "deleted file" below. |
3484 | */ | |
3485 | lbl[0] = a_one; | |
3486 | lbl[1] = b_two; | |
3487 | } | |
d9c552f1 | 3488 | strbuf_addf(&header, "%s%sdiff --git %s %s%s\n", line_prefix, meta, a_one, b_two, reset); |
6973dcae JH |
3489 | if (lbl[0][0] == '/') { |
3490 | /* /dev/null */ | |
d9c552f1 | 3491 | strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, meta, two->mode, reset); |
37466447 BW |
3492 | if (xfrm_msg) |
3493 | strbuf_addstr(&header, xfrm_msg); | |
296c6bb2 | 3494 | must_show_header = 1; |
6973dcae JH |
3495 | } |
3496 | else if (lbl[1][0] == '/') { | |
d9c552f1 | 3497 | strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, meta, one->mode, reset); |
37466447 BW |
3498 | if (xfrm_msg) |
3499 | strbuf_addstr(&header, xfrm_msg); | |
296c6bb2 | 3500 | must_show_header = 1; |
6973dcae JH |
3501 | } |
3502 | else { | |
3503 | if (one->mode != two->mode) { | |
d9c552f1 JK |
3504 | strbuf_addf(&header, "%s%sold mode %06o%s\n", line_prefix, meta, one->mode, reset); |
3505 | strbuf_addf(&header, "%s%snew mode %06o%s\n", line_prefix, meta, two->mode, reset); | |
296c6bb2 | 3506 | must_show_header = 1; |
cd112cef | 3507 | } |
37466447 BW |
3508 | if (xfrm_msg) |
3509 | strbuf_addstr(&header, xfrm_msg); | |
3e97c7c6 | 3510 | |
6973dcae JH |
3511 | /* |
3512 | * we do not run diff between different kind | |
3513 | * of objects. | |
3514 | */ | |
3515 | if ((one->mode ^ two->mode) & S_IFMT) | |
3516 | goto free_ab_and_return; | |
0c01857d | 3517 | if (complete_rewrite && |
b78ea5fc NTND |
3518 | (textconv_one || !diff_filespec_is_binary(o->repo, one)) && |
3519 | (textconv_two || !diff_filespec_is_binary(o->repo, two))) { | |
a29b0a13 SB |
3520 | emit_diff_symbol(o, DIFF_SYMBOL_HEADER, |
3521 | header.buf, header.len, 0); | |
3e97c7c6 | 3522 | strbuf_reset(&header); |
3aa1f7ca | 3523 | emit_rewrite_diff(name_a, name_b, one, two, |
b78ea5fc | 3524 | textconv_one, textconv_two, o); |
34a5e1a2 | 3525 | o->found_changes = 1; |
6973dcae JH |
3526 | goto free_ab_and_return; |
3527 | } | |
3528 | } | |
3529 | ||
467ddc14 | 3530 | if (o->irreversible_delete && lbl[1][0] == '/') { |
a29b0a13 SB |
3531 | emit_diff_symbol(o, DIFF_SYMBOL_HEADER, header.buf, |
3532 | header.len, 0); | |
467ddc14 JH |
3533 | strbuf_reset(&header); |
3534 | goto free_ab_and_return; | |
0d1e0e78 | 3535 | } else if (!o->flags.text && |
b78ea5fc NTND |
3536 | ( (!textconv_one && diff_filespec_is_binary(o->repo, one)) || |
3537 | (!textconv_two && diff_filespec_is_binary(o->repo, two)) )) { | |
4acaaa7a | 3538 | struct strbuf sb = STRBUF_INIT; |
1aaf69e6 NTND |
3539 | if (!one->data && !two->data && |
3540 | S_ISREG(one->mode) && S_ISREG(two->mode) && | |
0d1e0e78 | 3541 | !o->flags.binary) { |
4a7e27e9 | 3542 | if (oideq(&one->oid, &two->oid)) { |
1aaf69e6 | 3543 | if (must_show_header) |
a29b0a13 SB |
3544 | emit_diff_symbol(o, DIFF_SYMBOL_HEADER, |
3545 | header.buf, header.len, | |
3546 | 0); | |
1aaf69e6 NTND |
3547 | goto free_ab_and_return; |
3548 | } | |
a29b0a13 SB |
3549 | emit_diff_symbol(o, DIFF_SYMBOL_HEADER, |
3550 | header.buf, header.len, 0); | |
4acaaa7a SB |
3551 | strbuf_addf(&sb, "%sBinary files %s and %s differ\n", |
3552 | diff_line_prefix(o), lbl[0], lbl[1]); | |
3553 | emit_diff_symbol(o, DIFF_SYMBOL_BINARY_FILES, | |
3554 | sb.buf, sb.len, 0); | |
3555 | strbuf_release(&sb); | |
1aaf69e6 NTND |
3556 | goto free_ab_and_return; |
3557 | } | |
b78ea5fc NTND |
3558 | if (fill_mmfile(o->repo, &mf1, one) < 0 || |
3559 | fill_mmfile(o->repo, &mf2, two) < 0) | |
b3373982 | 3560 | die("unable to read files to diff"); |
0660626c JH |
3561 | /* Quite common confusing case */ |
3562 | if (mf1.size == mf2.size && | |
296c6bb2 CC |
3563 | !memcmp(mf1.ptr, mf2.ptr, mf1.size)) { |
3564 | if (must_show_header) | |
a29b0a13 SB |
3565 | emit_diff_symbol(o, DIFF_SYMBOL_HEADER, |
3566 | header.buf, header.len, 0); | |
0660626c | 3567 | goto free_ab_and_return; |
296c6bb2 | 3568 | } |
a29b0a13 | 3569 | emit_diff_symbol(o, DIFF_SYMBOL_HEADER, header.buf, header.len, 0); |
3e97c7c6 | 3570 | strbuf_reset(&header); |
0d1e0e78 | 3571 | if (o->flags.binary) |
4eed0ebd | 3572 | emit_binary_diff(o, &mf1, &mf2); |
4acaaa7a SB |
3573 | else { |
3574 | strbuf_addf(&sb, "%sBinary files %s and %s differ\n", | |
3575 | diff_line_prefix(o), lbl[0], lbl[1]); | |
3576 | emit_diff_symbol(o, DIFF_SYMBOL_BINARY_FILES, | |
3577 | sb.buf, sb.len, 0); | |
3578 | strbuf_release(&sb); | |
3579 | } | |
34a5e1a2 | 3580 | o->found_changes = 1; |
467ddc14 | 3581 | } else { |
6973dcae | 3582 | /* Crazy xdl interfaces.. */ |
0da0e926 | 3583 | const char *diffopts; |
ae021d87 | 3584 | const char *v; |
6973dcae JH |
3585 | xpparam_t xpp; |
3586 | xdemitconf_t xecfg; | |
6973dcae | 3587 | struct emit_callback ecbdata; |
be58e70d | 3588 | const struct userdiff_funcname *pe; |
f258475a | 3589 | |
b3f01ff2 | 3590 | if (must_show_header) { |
a29b0a13 SB |
3591 | emit_diff_symbol(o, DIFF_SYMBOL_HEADER, |
3592 | header.buf, header.len, 0); | |
3e97c7c6 GB |
3593 | strbuf_reset(&header); |
3594 | } | |
3595 | ||
6afaf807 NTND |
3596 | mf1.size = fill_textconv(o->repo, textconv_one, one, &mf1.ptr); |
3597 | mf2.size = fill_textconv(o->repo, textconv_two, two, &mf2.ptr); | |
04427ac8 | 3598 | |
acd00ea0 | 3599 | pe = diff_funcname_pattern(o, one); |
45e7ca0f | 3600 | if (!pe) |
acd00ea0 | 3601 | pe = diff_funcname_pattern(o, two); |
6973dcae | 3602 | |
9ccd0a88 | 3603 | memset(&xpp, 0, sizeof(xpp)); |
30b25010 | 3604 | memset(&xecfg, 0, sizeof(xecfg)); |
cd112cef | 3605 | memset(&ecbdata, 0, sizeof(ecbdata)); |
1cdde296 JS |
3606 | if (o->flags.suppress_diff_headers) |
3607 | lbl[0] = NULL; | |
6973dcae | 3608 | ecbdata.label_path = lbl; |
daa0c3d9 | 3609 | ecbdata.color_diff = want_color(o->use_color); |
26d024ec | 3610 | ecbdata.ws_rule = whitespace_rule(o->repo->index, name_b); |
690ed843 | 3611 | if (ecbdata.ws_rule & WS_BLANK_AT_EOF) |
d68fe26f | 3612 | check_blank_at_eof(&mf1, &mf2, &ecbdata); |
a3c158d4 | 3613 | ecbdata.opt = o; |
1cdde296 JS |
3614 | if (header.len && !o->flags.suppress_diff_headers) |
3615 | ecbdata.header = &header; | |
582aa00b | 3616 | xpp.flags = o->xdl_opts; |
296d4a94 MK |
3617 | xpp.ignore_regex = o->ignore_regex; |
3618 | xpp.ignore_regex_nr = o->ignore_regex_nr; | |
2477ab2e JT |
3619 | xpp.anchors = o->anchors; |
3620 | xpp.anchors_nr = o->anchors_nr; | |
ee1e5412 | 3621 | xecfg.ctxlen = o->context; |
6d0e674a | 3622 | xecfg.interhunkctxlen = o->interhunkcontext; |
6973dcae | 3623 | xecfg.flags = XDL_EMIT_FUNCNAMES; |
0d1e0e78 | 3624 | if (o->flags.funccontext) |
14937c2c | 3625 | xecfg.flags |= XDL_EMIT_FUNCCONTEXT; |
45e7ca0f | 3626 | if (pe) |
a013585b | 3627 | xdiff_set_find_func(&xecfg, pe->pattern, pe->cflags); |
0da0e926 JK |
3628 | |
3629 | diffopts = getenv("GIT_DIFF_OPTS"); | |
6973dcae JH |
3630 | if (!diffopts) |
3631 | ; | |
ae021d87 JK |
3632 | else if (skip_prefix(diffopts, "--unified=", &v)) |
3633 | xecfg.ctxlen = strtoul(v, NULL, 10); | |
3634 | else if (skip_prefix(diffopts, "-u", &v)) | |
3635 | xecfg.ctxlen = strtoul(v, NULL, 10); | |
0da0e926 | 3636 | |
77d1a520 TR |
3637 | if (o->word_diff) |
3638 | init_diff_words_data(&ecbdata, o, one, two); | |
9346d6d1 JK |
3639 | if (xdi_diff_outf(&mf1, &mf2, NULL, fn_out_consume, |
3640 | &ecbdata, &xpp, &xecfg)) | |
3efb9880 | 3641 | die("unable to generate diff for %s", one->path); |
882749a0 | 3642 | if (o->word_diff) |
f59a59e2 | 3643 | free_diff_words_data(&ecbdata); |
04427ac8 JK |
3644 | if (textconv_one) |
3645 | free(mf1.ptr); | |
3646 | if (textconv_two) | |
3647 | free(mf2.ptr); | |
8cfe5f1c | 3648 | xdiff_clear_find_func(&xecfg); |
6973dcae JH |
3649 | } |
3650 | ||
3651 | free_ab_and_return: | |
3e97c7c6 | 3652 | strbuf_release(&header); |
fc3abdf5 JH |
3653 | diff_free_filespec_data(one); |
3654 | diff_free_filespec_data(two); | |
6973dcae JH |
3655 | free(a_one); |
3656 | free(b_two); | |
3657 | return; | |
3658 | } | |
3659 | ||
ddf88fa6 NTND |
3660 | static char *get_compact_summary(const struct diff_filepair *p, int is_renamed) |
3661 | { | |
3662 | if (!is_renamed) { | |
3663 | if (p->status == DIFF_STATUS_ADDED) { | |
3664 | if (S_ISLNK(p->two->mode)) | |
3665 | return "new +l"; | |
3666 | else if ((p->two->mode & 0777) == 0755) | |
3667 | return "new +x"; | |
3668 | else | |
3669 | return "new"; | |
3670 | } else if (p->status == DIFF_STATUS_DELETED) | |
3671 | return "gone"; | |
3672 | } | |
3673 | if (S_ISLNK(p->one->mode) && !S_ISLNK(p->two->mode)) | |
3674 | return "mode -l"; | |
3675 | else if (!S_ISLNK(p->one->mode) && S_ISLNK(p->two->mode)) | |
3676 | return "mode +l"; | |
3677 | else if ((p->one->mode & 0777) == 0644 && | |
3678 | (p->two->mode & 0777) == 0755) | |
3679 | return "mode +x"; | |
3680 | else if ((p->one->mode & 0777) == 0755 && | |
3681 | (p->two->mode & 0777) == 0644) | |
3682 | return "mode -x"; | |
3683 | return NULL; | |
3684 | } | |
3685 | ||
6973dcae JH |
3686 | static void builtin_diffstat(const char *name_a, const char *name_b, |
3687 | struct diff_filespec *one, | |
3688 | struct diff_filespec *two, | |
710158e3 | 3689 | struct diffstat_t *diffstat, |
0d21efa5 | 3690 | struct diff_options *o, |
74faaa16 | 3691 | struct diff_filepair *p) |
6973dcae JH |
3692 | { |
3693 | mmfile_t mf1, mf2; | |
3694 | struct diffstat_file *data; | |
ff0c7fa8 | 3695 | int may_differ; |
74faaa16 LT |
3696 | int complete_rewrite = 0; |
3697 | ||
3698 | if (!DIFF_PAIR_UNMERGED(p)) { | |
3699 | if (p->status == DIFF_STATUS_MODIFIED && p->score) | |
3700 | complete_rewrite = 1; | |
3701 | } | |
6973dcae JH |
3702 | |
3703 | data = diffstat_add(diffstat, name_a, name_b); | |
99bfd407 | 3704 | data->is_interesting = p->status != DIFF_STATUS_UNKNOWN; |
ddf88fa6 NTND |
3705 | if (o->flags.stat_with_summary) |
3706 | data->comments = get_compact_summary(p, data->is_renamed); | |
6973dcae JH |
3707 | |
3708 | if (!one || !two) { | |
3709 | data->is_unmerged = 1; | |
3710 | return; | |
3711 | } | |
ded0abc7 | 3712 | |
ff0c7fa8 TGS |
3713 | /* saves some reads if true, not a guarantee of diff outcome */ |
3714 | may_differ = !(one->oid_valid && two->oid_valid && | |
3715 | oideq(&one->oid, &two->oid)); | |
352ca4e1 | 3716 | |
b78ea5fc NTND |
3717 | if (diff_filespec_is_binary(o->repo, one) || |
3718 | diff_filespec_is_binary(o->repo, two)) { | |
ded0abc7 | 3719 | data->is_binary = 1; |
ff0c7fa8 | 3720 | if (!may_differ) { |
e18872b2 ZJS |
3721 | data->added = 0; |
3722 | data->deleted = 0; | |
3723 | } else { | |
b78ea5fc NTND |
3724 | data->added = diff_filespec_size(o->repo, two); |
3725 | data->deleted = diff_filespec_size(o->repo, one); | |
e18872b2 | 3726 | } |
ded0abc7 JK |
3727 | } |
3728 | ||
3729 | else if (complete_rewrite) { | |
1c37e86a JT |
3730 | diff_populate_filespec(o->repo, one, NULL); |
3731 | diff_populate_filespec(o->repo, two, NULL); | |
710158e3 JH |
3732 | data->deleted = count_lines(one->data, one->size); |
3733 | data->added = count_lines(two->data, two->size); | |
710158e3 | 3734 | } |
6973dcae | 3735 | |
ff0c7fa8 | 3736 | else if (may_differ) { |
6973dcae JH |
3737 | /* Crazy xdl interfaces.. */ |
3738 | xpparam_t xpp; | |
3739 | xdemitconf_t xecfg; | |
6973dcae | 3740 | |
b78ea5fc NTND |
3741 | if (fill_mmfile(o->repo, &mf1, one) < 0 || |
3742 | fill_mmfile(o->repo, &mf2, two) < 0) | |
ded0abc7 JK |
3743 | die("unable to read files to diff"); |
3744 | ||
9ccd0a88 | 3745 | memset(&xpp, 0, sizeof(xpp)); |
30b25010 | 3746 | memset(&xecfg, 0, sizeof(xecfg)); |
582aa00b | 3747 | xpp.flags = o->xdl_opts; |
296d4a94 MK |
3748 | xpp.ignore_regex = o->ignore_regex; |
3749 | xpp.ignore_regex_nr = o->ignore_regex_nr; | |
2477ab2e JT |
3750 | xpp.anchors = o->anchors; |
3751 | xpp.anchors_nr = o->anchors_nr; | |
f01cae91 JH |
3752 | xecfg.ctxlen = o->context; |
3753 | xecfg.interhunkctxlen = o->interhunkcontext; | |
5d934600 ÆAB |
3754 | xecfg.flags = XDL_EMIT_NO_HUNK_HDR; |
3755 | if (xdi_diff_outf(&mf1, &mf2, NULL, | |
3b40a090 | 3756 | diffstat_consume, diffstat, &xpp, &xecfg)) |
3efb9880 | 3757 | die("unable to generate diffstat for %s", one->path); |
1cf3d5db MR |
3758 | |
3759 | if (DIFF_FILE_VALID(one) && DIFF_FILE_VALID(two)) { | |
3760 | struct diffstat_file *file = | |
3761 | diffstat->files[diffstat->nr - 1]; | |
3762 | /* | |
3763 | * Omit diffstats of modified files where nothing changed. | |
ff0c7fa8 | 3764 | * Even if may_differ, this might be the case due to |
1cf3d5db MR |
3765 | * ignoring whitespace changes, etc. |
3766 | * | |
3767 | * But note that we special-case additions, deletions, | |
3768 | * renames, and mode changes as adding an empty file, | |
3769 | * for example is still of interest. | |
3770 | */ | |
3771 | if ((p->status == DIFF_STATUS_MODIFIED) | |
3772 | && !file->added | |
3773 | && !file->deleted | |
3774 | && one->mode == two->mode) { | |
3775 | free_diffstat_file(file); | |
3776 | diffstat->nr--; | |
3777 | } | |
3778 | } | |
6973dcae | 3779 | } |
fc3abdf5 | 3780 | |
fc3abdf5 JH |
3781 | diff_free_filespec_data(one); |
3782 | diff_free_filespec_data(two); | |
6973dcae JH |
3783 | } |
3784 | ||
88246898 | 3785 | static void builtin_checkdiff(const char *name_a, const char *name_b, |
cd676a51 | 3786 | const char *attr_path, |
5ff10dd6 JH |
3787 | struct diff_filespec *one, |
3788 | struct diff_filespec *two, | |
3789 | struct diff_options *o) | |
88246898 JS |
3790 | { |
3791 | mmfile_t mf1, mf2; | |
3792 | struct checkdiff_t data; | |
3793 | ||
3794 | if (!two) | |
3795 | return; | |
3796 | ||
3797 | memset(&data, 0, sizeof(data)); | |
88246898 JS |
3798 | data.filename = name_b ? name_b : name_a; |
3799 | data.lineno = 0; | |
1ba111d1 | 3800 | data.o = o; |
26d024ec | 3801 | data.ws_rule = whitespace_rule(o->repo->index, attr_path); |
32eaa468 | 3802 | data.conflict_marker_size = ll_merge_marker_size(o->repo->index, attr_path); |
88246898 | 3803 | |
b78ea5fc NTND |
3804 | if (fill_mmfile(o->repo, &mf1, one) < 0 || |
3805 | fill_mmfile(o->repo, &mf2, two) < 0) | |
88246898 JS |
3806 | die("unable to read files to diff"); |
3807 | ||
5ff10dd6 JH |
3808 | /* |
3809 | * All the other codepaths check both sides, but not checking | |
3810 | * the "old" side here is deliberate. We are checking the newly | |
3811 | * introduced changes, and as long as the "new" side is text, we | |
3812 | * can and should check what it introduces. | |
3813 | */ | |
b78ea5fc | 3814 | if (diff_filespec_is_binary(o->repo, two)) |
fc3abdf5 | 3815 | goto free_and_return; |
88246898 JS |
3816 | else { |
3817 | /* Crazy xdl interfaces.. */ | |
3818 | xpparam_t xpp; | |
3819 | xdemitconf_t xecfg; | |
88246898 | 3820 | |
9ccd0a88 | 3821 | memset(&xpp, 0, sizeof(xpp)); |
30b25010 | 3822 | memset(&xecfg, 0, sizeof(xecfg)); |
c35539eb | 3823 | xecfg.ctxlen = 1; /* at least one context line */ |
582aa00b | 3824 | xpp.flags = 0; |
75ab7630 JK |
3825 | if (xdi_diff_outf(&mf1, &mf2, checkdiff_consume_hunk, |
3826 | checkdiff_consume, &data, | |
3efb9880 JK |
3827 | &xpp, &xecfg)) |
3828 | die("unable to generate checkdiff for %s", one->path); | |
877f23cc | 3829 | |
467babf8 | 3830 | if (data.ws_rule & WS_BLANK_AT_EOF) { |
d68fe26f JH |
3831 | struct emit_callback ecbdata; |
3832 | int blank_at_eof; | |
3833 | ||
3834 | ecbdata.ws_rule = data.ws_rule; | |
3835 | check_blank_at_eof(&mf1, &mf2, &ecbdata); | |
8837d335 | 3836 | blank_at_eof = ecbdata.blank_at_eof_in_postimage; |
d68fe26f | 3837 | |
467babf8 JH |
3838 | if (blank_at_eof) { |
3839 | static char *err; | |
3840 | if (!err) | |
3841 | err = whitespace_error_string(WS_BLANK_AT_EOF); | |
3842 | fprintf(o->file, "%s:%d: %s.\n", | |
3843 | data.filename, blank_at_eof, err); | |
3844 | data.status = 1; /* report errors */ | |
3845 | } | |
877f23cc | 3846 | } |
88246898 | 3847 | } |
fc3abdf5 JH |
3848 | free_and_return: |
3849 | diff_free_filespec_data(one); | |
3850 | diff_free_filespec_data(two); | |
62c64895 | 3851 | if (data.status) |
0d1e0e78 | 3852 | o->flags.check_failed = 1; |
88246898 JS |
3853 | } |
3854 | ||
6973dcae JH |
3855 | struct diff_filespec *alloc_filespec(const char *path) |
3856 | { | |
96ffc06f | 3857 | struct diff_filespec *spec; |
6973dcae | 3858 | |
96ffc06f | 3859 | FLEXPTR_ALLOC_STR(spec, path, path); |
9fb88419 | 3860 | spec->count = 1; |
122aa6f9 | 3861 | spec->is_binary = -1; |
6973dcae JH |
3862 | return spec; |
3863 | } | |
3864 | ||
9fb88419 LT |
3865 | void free_filespec(struct diff_filespec *spec) |
3866 | { | |
3867 | if (!--spec->count) { | |
3868 | diff_free_filespec_data(spec); | |
3869 | free(spec); | |
3870 | } | |
3871 | } | |
3872 | ||
f9704c2d BW |
3873 | void fill_filespec(struct diff_filespec *spec, const struct object_id *oid, |
3874 | int oid_valid, unsigned short mode) | |
6973dcae JH |
3875 | { |
3876 | if (mode) { | |
3877 | spec->mode = canon_mode(mode); | |
f9704c2d BW |
3878 | oidcpy(&spec->oid, oid); |
3879 | spec->oid_valid = oid_valid; | |
6973dcae JH |
3880 | } |
3881 | } | |
3882 | ||
3883 | /* | |
5adf317b | 3884 | * Given a name and sha1 pair, if the index tells us the file in |
6973dcae JH |
3885 | * the work tree has that object contents, return true, so that |
3886 | * prepare_temp_file() does not have to inflate and extract. | |
3887 | */ | |
b78ea5fc NTND |
3888 | static int reuse_worktree_file(struct index_state *istate, |
3889 | const char *name, | |
3890 | const struct object_id *oid, | |
3891 | int want_file) | |
6973dcae | 3892 | { |
9c5e6c80 | 3893 | const struct cache_entry *ce; |
6973dcae JH |
3894 | struct stat st; |
3895 | int pos, len; | |
3896 | ||
150115ad JH |
3897 | /* |
3898 | * We do not read the cache ourselves here, because the | |
6973dcae JH |
3899 | * benchmark with my previous version that always reads cache |
3900 | * shows that it makes things worse for diff-tree comparing | |
3901 | * two linux-2.6 kernel trees in an already checked out work | |
3902 | * tree. This is because most diff-tree comparisons deal with | |
3903 | * only a small number of files, while reading the cache is | |
3904 | * expensive for a large project, and its cost outweighs the | |
3905 | * savings we get by not inflating the object to a temporary | |
3906 | * file. Practically, this code only helps when we are used | |
3907 | * by diff-cache --cached, which does read the cache before | |
3908 | * calling us. | |
3909 | */ | |
b78ea5fc | 3910 | if (!istate->cache) |
6973dcae JH |
3911 | return 0; |
3912 | ||
1510fea7 SP |
3913 | /* We want to avoid the working directory if our caller |
3914 | * doesn't need the data in a normal file, this system | |
3915 | * is rather slow with its stat/open/mmap/close syscalls, | |
3916 | * and the object is contained in a pack file. The pack | |
3917 | * is probably already open and will be faster to obtain | |
3918 | * the data through than the working directory. Loose | |
3919 | * objects however would tend to be slower as they need | |
3920 | * to be individually opened and inflated. | |
3921 | */ | |
14c3c80c | 3922 | if (!FAST_WORKING_DIRECTORY && !want_file && has_object_pack(oid)) |
1510fea7 SP |
3923 | return 0; |
3924 | ||
06dec439 JK |
3925 | /* |
3926 | * Similarly, if we'd have to convert the file contents anyway, that | |
3927 | * makes the optimization not worthwhile. | |
3928 | */ | |
b78ea5fc | 3929 | if (!want_file && would_convert_to_git(istate, name)) |
06dec439 JK |
3930 | return 0; |
3931 | ||
ad90da73 DS |
3932 | /* |
3933 | * If this path does not match our sparse-checkout definition, | |
3934 | * then the file will not be in the working directory. | |
3935 | */ | |
3936 | if (!path_in_sparse_checkout(name, istate)) | |
3937 | return 0; | |
3938 | ||
6973dcae | 3939 | len = strlen(name); |
b78ea5fc | 3940 | pos = index_name_pos(istate, name, len); |
6973dcae JH |
3941 | if (pos < 0) |
3942 | return 0; | |
b78ea5fc | 3943 | ce = istate->cache[pos]; |
eadb5831 JH |
3944 | |
3945 | /* | |
3946 | * This is not the sha1 we are looking for, or | |
3947 | * unreusable because it is not a regular file. | |
3948 | */ | |
9001dc2a | 3949 | if (!oideq(oid, &ce->oid) || !S_ISREG(ce->ce_mode)) |
6973dcae | 3950 | return 0; |
eadb5831 | 3951 | |
150115ad JH |
3952 | /* |
3953 | * If ce is marked as "assume unchanged", there is no | |
3954 | * guarantee that work tree matches what we are looking for. | |
3955 | */ | |
b4d1690d | 3956 | if ((ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) |
150115ad JH |
3957 | return 0; |
3958 | ||
eadb5831 JH |
3959 | /* |
3960 | * If ce matches the file in the work tree, we can reuse it. | |
6973dcae | 3961 | */ |
eadb5831 | 3962 | if (ce_uptodate(ce) || |
b78ea5fc | 3963 | (!lstat(name, &st) && !ie_match_stat(istate, ce, &st, 0))) |
eadb5831 JH |
3964 | return 1; |
3965 | ||
3966 | return 0; | |
6973dcae JH |
3967 | } |
3968 | ||
04786756 LT |
3969 | static int diff_populate_gitlink(struct diff_filespec *s, int size_only) |
3970 | { | |
b1ddfb91 JK |
3971 | struct strbuf buf = STRBUF_INIT; |
3972 | char *dirty = ""; | |
8e08b419 JH |
3973 | |
3974 | /* Are we looking at the work tree? */ | |
85adbf2f | 3975 | if (s->dirty_submodule) |
8e08b419 JH |
3976 | dirty = "-dirty"; |
3977 | ||
a0d12c44 | 3978 | strbuf_addf(&buf, "Subproject commit %s%s\n", |
3979 | oid_to_hex(&s->oid), dirty); | |
b1ddfb91 | 3980 | s->size = buf.len; |
04786756 LT |
3981 | if (size_only) { |
3982 | s->data = NULL; | |
b1ddfb91 JK |
3983 | strbuf_release(&buf); |
3984 | } else { | |
3985 | s->data = strbuf_detach(&buf, NULL); | |
3986 | s->should_free = 1; | |
04786756 LT |
3987 | } |
3988 | return 0; | |
3989 | } | |
3990 | ||
6973dcae JH |
3991 | /* |
3992 | * While doing rename detection and pickaxe operation, we may need to | |
3993 | * grab the data for the blob (or file) for our own in-core comparison. | |
3994 | * diff_filespec has data and size fields for this purpose. | |
3995 | */ | |
b78ea5fc NTND |
3996 | int diff_populate_filespec(struct repository *r, |
3997 | struct diff_filespec *s, | |
1c37e86a | 3998 | const struct diff_populate_filespec_options *options) |
6973dcae | 3999 | { |
1c37e86a JT |
4000 | int size_only = options ? options->check_size_only : 0; |
4001 | int check_binary = options ? options->check_binary : 0; | |
6973dcae | 4002 | int err = 0; |
8462ff43 | 4003 | int conv_flags = global_conv_flags_eol; |
5430bb28 JH |
4004 | /* |
4005 | * demote FAIL to WARN to allow inspecting the situation | |
4006 | * instead of refusing. | |
4007 | */ | |
8462ff43 TB |
4008 | if (conv_flags & CONV_EOL_RNDTRP_DIE) |
4009 | conv_flags = CONV_EOL_RNDTRP_WARN; | |
5430bb28 | 4010 | |
6973dcae JH |
4011 | if (!DIFF_FILE_VALID(s)) |
4012 | die("internal error: asking to populate invalid file."); | |
4013 | if (S_ISDIR(s->mode)) | |
4014 | return -1; | |
4015 | ||
6973dcae | 4016 | if (s->data) |
fc3abdf5 | 4017 | return 0; |
04786756 | 4018 | |
6e0b8ed6 JH |
4019 | if (size_only && 0 < s->size) |
4020 | return 0; | |
4021 | ||
302b9282 | 4022 | if (S_ISGITLINK(s->mode)) |
04786756 LT |
4023 | return diff_populate_gitlink(s, size_only); |
4024 | ||
41c9560e | 4025 | if (!s->oid_valid || |
b78ea5fc | 4026 | reuse_worktree_file(r->index, s->path, &s->oid, 0)) { |
f285a2d7 | 4027 | struct strbuf buf = STRBUF_INIT; |
6973dcae JH |
4028 | struct stat st; |
4029 | int fd; | |
6c510bee | 4030 | |
6973dcae | 4031 | if (lstat(s->path, &st) < 0) { |
10e0ca84 AO |
4032 | err_empty: |
4033 | err = -1; | |
4034 | empty: | |
4035 | s->data = (char *)""; | |
4036 | s->size = 0; | |
4037 | return err; | |
6973dcae | 4038 | } |
dc49cd76 | 4039 | s->size = xsize_t(st.st_size); |
6973dcae JH |
4040 | if (!s->size) |
4041 | goto empty; | |
6973dcae | 4042 | if (S_ISLNK(st.st_mode)) { |
cf219d8c LT |
4043 | struct strbuf sb = STRBUF_INIT; |
4044 | ||
4045 | if (strbuf_readlink(&sb, s->path, s->size)) | |
6973dcae | 4046 | goto err_empty; |
0956a6db RS |
4047 | s->size = sb.len; |
4048 | s->data = strbuf_detach(&sb, NULL); | |
cf219d8c | 4049 | s->should_free = 1; |
6973dcae JH |
4050 | return 0; |
4051 | } | |
12426e11 JH |
4052 | |
4053 | /* | |
4054 | * Even if the caller would be happy with getting | |
4055 | * only the size, we cannot return early at this | |
4056 | * point if the path requires us to run the content | |
4057 | * conversion. | |
4058 | */ | |
b78ea5fc | 4059 | if (size_only && !would_convert_to_git(r->index, s->path)) |
cf219d8c | 4060 | return 0; |
12426e11 JH |
4061 | |
4062 | /* | |
4063 | * Note: this check uses xsize_t(st.st_size) that may | |
4064 | * not be the true size of the blob after it goes | |
4065 | * through convert_to_git(). This may not strictly be | |
4066 | * correct, but the whole point of big_file_threshold | |
4067 | * and is_binary check being that we want to avoid | |
4068 | * opening the file and inspecting the contents, this | |
4069 | * is probably fine. | |
4070 | */ | |
1c37e86a | 4071 | if (check_binary && |
6bf3b813 NTND |
4072 | s->size > big_file_threshold && s->is_binary == -1) { |
4073 | s->is_binary = 1; | |
4074 | return 0; | |
4075 | } | |
6973dcae JH |
4076 | fd = open(s->path, O_RDONLY); |
4077 | if (fd < 0) | |
4078 | goto err_empty; | |
c4712e45 | 4079 | s->data = xmmap(NULL, s->size, PROT_READ, MAP_PRIVATE, fd, 0); |
6973dcae | 4080 | close(fd); |
6973dcae | 4081 | s->should_munmap = 1; |
6c510bee LT |
4082 | |
4083 | /* | |
4084 | * Convert from working tree format to canonical git format | |
4085 | */ | |
b78ea5fc | 4086 | if (convert_to_git(r->index, s->path, s->data, s->size, &buf, conv_flags)) { |
c32f749f | 4087 | size_t size = 0; |
6c510bee LT |
4088 | munmap(s->data, s->size); |
4089 | s->should_munmap = 0; | |
c32f749f RS |
4090 | s->data = strbuf_detach(&buf, &size); |
4091 | s->size = size; | |
6c510bee LT |
4092 | s->should_free = 1; |
4093 | } | |
6973dcae JH |
4094 | } |
4095 | else { | |
c14b6f83 JT |
4096 | struct object_info info = { |
4097 | .sizep = &s->size | |
4098 | }; | |
4099 | ||
4100 | if (!(size_only || check_binary)) | |
4101 | /* | |
4102 | * Set contentp, since there is no chance that merely | |
4103 | * the size is sufficient. | |
4104 | */ | |
4105 | info.contentp = &s->data; | |
4106 | ||
95acf11a JT |
4107 | if (options && options->missing_object_cb) { |
4108 | if (!oid_object_info_extended(r, &s->oid, &info, | |
4109 | OBJECT_INFO_LOOKUP_REPLACE | | |
4110 | OBJECT_INFO_SKIP_FETCH_OBJECT)) | |
4111 | goto object_read; | |
4112 | options->missing_object_cb(options->missing_object_data); | |
4113 | } | |
c14b6f83 JT |
4114 | if (oid_object_info_extended(r, &s->oid, &info, |
4115 | OBJECT_INFO_LOOKUP_REPLACE)) | |
4116 | die("unable to read %s", oid_to_hex(&s->oid)); | |
4117 | ||
95acf11a | 4118 | object_read: |
1c37e86a | 4119 | if (size_only || check_binary) { |
6bf3b813 NTND |
4120 | if (size_only) |
4121 | return 0; | |
4122 | if (s->size > big_file_threshold && s->is_binary == -1) { | |
4123 | s->is_binary = 1; | |
4124 | return 0; | |
4125 | } | |
6973dcae | 4126 | } |
c14b6f83 JT |
4127 | if (!info.contentp) { |
4128 | info.contentp = &s->data; | |
4129 | if (oid_object_info_extended(r, &s->oid, &info, | |
4130 | OBJECT_INFO_LOOKUP_REPLACE)) | |
4131 | die("unable to read %s", oid_to_hex(&s->oid)); | |
4132 | } | |
6bf3b813 | 4133 | s->should_free = 1; |
6973dcae JH |
4134 | } |
4135 | return 0; | |
4136 | } | |
4137 | ||
8ae92e63 | 4138 | void diff_free_filespec_blob(struct diff_filespec *s) |
6973dcae JH |
4139 | { |
4140 | if (s->should_free) | |
4141 | free(s->data); | |
4142 | else if (s->should_munmap) | |
4143 | munmap(s->data, s->size); | |
fc3abdf5 JH |
4144 | |
4145 | if (s->should_free || s->should_munmap) { | |
4146 | s->should_free = s->should_munmap = 0; | |
4147 | s->data = NULL; | |
4148 | } | |
eede7b7d JK |
4149 | } |
4150 | ||
4151 | void diff_free_filespec_data(struct diff_filespec *s) | |
4152 | { | |
24695934 JK |
4153 | if (!s) |
4154 | return; | |
4155 | ||
8ae92e63 | 4156 | diff_free_filespec_blob(s); |
6a83d902 | 4157 | FREE_AND_NULL(s->cnt_data); |
6973dcae JH |
4158 | } |
4159 | ||
b78ea5fc NTND |
4160 | static void prep_temp_blob(struct index_state *istate, |
4161 | const char *path, struct diff_tempfile *temp, | |
6973dcae JH |
4162 | void *blob, |
4163 | unsigned long size, | |
09bdff29 | 4164 | const struct object_id *oid, |
6973dcae JH |
4165 | int mode) |
4166 | { | |
4e218f54 | 4167 | struct strbuf buf = STRBUF_INIT; |
003b33a8 DA |
4168 | char *path_dup = xstrdup(path); |
4169 | const char *base = basename(path_dup); | |
c397aac0 | 4170 | struct checkout_metadata meta; |
4171 | ||
4172 | init_checkout_metadata(&meta, NULL, NULL, oid); | |
6973dcae | 4173 | |
8af75937 | 4174 | temp->tempfile = mks_tempfile_dt("git-blob-XXXXXX", base); |
076aa2cb | 4175 | if (!temp->tempfile) |
d824cbba | 4176 | die_errno("unable to create temp-file"); |
b78ea5fc | 4177 | if (convert_to_working_tree(istate, path, |
c397aac0 | 4178 | (const char *)blob, (size_t)size, &buf, &meta)) { |
4e218f54 JS |
4179 | blob = buf.buf; |
4180 | size = buf.len; | |
4181 | } | |
c50424a6 | 4182 | if (write_in_full(temp->tempfile->fd, blob, size) < 0 || |
076aa2cb | 4183 | close_tempfile_gently(temp->tempfile)) |
0721c314 | 4184 | die_errno("unable to write temp-file"); |
076aa2cb | 4185 | temp->name = get_tempfile_path(temp->tempfile); |
09bdff29 | 4186 | oid_to_hex_r(temp->hex, oid); |
5096d490 | 4187 | xsnprintf(temp->mode, sizeof(temp->mode), "%06o", mode); |
4e218f54 | 4188 | strbuf_release(&buf); |
003b33a8 | 4189 | free(path_dup); |
6973dcae JH |
4190 | } |
4191 | ||
b78ea5fc NTND |
4192 | static struct diff_tempfile *prepare_temp_file(struct repository *r, |
4193 | const char *name, | |
4194 | struct diff_filespec *one) | |
6973dcae | 4195 | { |
479b0ae8 JK |
4196 | struct diff_tempfile *temp = claim_diff_tempfile(); |
4197 | ||
6973dcae JH |
4198 | if (!DIFF_FILE_VALID(one)) { |
4199 | not_a_valid_file: | |
4200 | /* A '-' entry produces this for file-2, and | |
4201 | * a '+' entry produces this for file-1. | |
4202 | */ | |
4203 | temp->name = "/dev/null"; | |
5096d490 JK |
4204 | xsnprintf(temp->hex, sizeof(temp->hex), "."); |
4205 | xsnprintf(temp->mode, sizeof(temp->mode), "."); | |
479b0ae8 JK |
4206 | return temp; |
4207 | } | |
4208 | ||
aba47272 | 4209 | if (!S_ISGITLINK(one->mode) && |
41c9560e | 4210 | (!one->oid_valid || |
b78ea5fc | 4211 | reuse_worktree_file(r->index, name, &one->oid, 1))) { |
6973dcae JH |
4212 | struct stat st; |
4213 | if (lstat(name, &st) < 0) { | |
4214 | if (errno == ENOENT) | |
4215 | goto not_a_valid_file; | |
d824cbba | 4216 | die_errno("stat(%s)", name); |
6973dcae JH |
4217 | } |
4218 | if (S_ISLNK(st.st_mode)) { | |
3cd7388d JK |
4219 | struct strbuf sb = STRBUF_INIT; |
4220 | if (strbuf_readlink(&sb, name, st.st_size) < 0) | |
0721c314 | 4221 | die_errno("readlink(%s)", name); |
b78ea5fc | 4222 | prep_temp_blob(r->index, name, temp, sb.buf, sb.len, |
41c9560e | 4223 | (one->oid_valid ? |
14228447 | 4224 | &one->oid : null_oid()), |
41c9560e | 4225 | (one->oid_valid ? |
6973dcae | 4226 | one->mode : S_IFLNK)); |
3cd7388d | 4227 | strbuf_release(&sb); |
6973dcae JH |
4228 | } |
4229 | else { | |
4230 | /* we can borrow from the file in the work tree */ | |
4231 | temp->name = name; | |
41c9560e | 4232 | if (!one->oid_valid) |
14228447 | 4233 | oid_to_hex_r(temp->hex, null_oid()); |
6973dcae | 4234 | else |
2490574d | 4235 | oid_to_hex_r(temp->hex, &one->oid); |
6973dcae JH |
4236 | /* Even though we may sometimes borrow the |
4237 | * contents from the work tree, we always want | |
4238 | * one->mode. mode is trustworthy even when | |
74014152 | 4239 | * !(one->oid_valid), as long as |
6973dcae JH |
4240 | * DIFF_FILE_VALID(one). |
4241 | */ | |
5096d490 | 4242 | xsnprintf(temp->mode, sizeof(temp->mode), "%06o", one->mode); |
6973dcae | 4243 | } |
479b0ae8 | 4244 | return temp; |
6973dcae JH |
4245 | } |
4246 | else { | |
1c37e86a | 4247 | if (diff_populate_filespec(r, one, NULL)) |
6973dcae | 4248 | die("cannot read data blob for %s", one->path); |
b78ea5fc NTND |
4249 | prep_temp_blob(r->index, name, temp, |
4250 | one->data, one->size, | |
09bdff29 | 4251 | &one->oid, one->mode); |
6973dcae | 4252 | } |
479b0ae8 | 4253 | return temp; |
6973dcae JH |
4254 | } |
4255 | ||
b78ea5fc | 4256 | static void add_external_diff_name(struct repository *r, |
ef8d7ac4 | 4257 | struct strvec *argv, |
f3efe787 JK |
4258 | const char *name, |
4259 | struct diff_filespec *df) | |
4260 | { | |
b78ea5fc | 4261 | struct diff_tempfile *temp = prepare_temp_file(r, name, df); |
ef8d7ac4 JK |
4262 | strvec_push(argv, temp->name); |
4263 | strvec_push(argv, temp->hex); | |
4264 | strvec_push(argv, temp->mode); | |
f3efe787 JK |
4265 | } |
4266 | ||
6973dcae JH |
4267 | /* An external diff command takes: |
4268 | * | |
4269 | * diff-cmd name infile1 infile1-sha1 infile1-mode \ | |
4270 | * infile2 infile2-sha1 infile2-mode [ rename-to ] | |
4271 | * | |
4272 | */ | |
4273 | static void run_external_diff(const char *pgm, | |
4274 | const char *name, | |
4275 | const char *other, | |
4276 | struct diff_filespec *one, | |
4277 | struct diff_filespec *two, | |
4278 | const char *xfrm_msg, | |
ee7fb0b1 | 4279 | struct diff_options *o) |
6973dcae | 4280 | { |
ef8d7ac4 JK |
4281 | struct strvec argv = STRVEC_INIT; |
4282 | struct strvec env = STRVEC_INIT; | |
ee7fb0b1 | 4283 | struct diff_queue_struct *q = &diff_queued_diff; |
6973dcae | 4284 | |
ef8d7ac4 JK |
4285 | strvec_push(&argv, pgm); |
4286 | strvec_push(&argv, name); | |
6973dcae | 4287 | |
6973dcae | 4288 | if (one && two) { |
b78ea5fc | 4289 | add_external_diff_name(o->repo, &argv, name, one); |
f3efe787 | 4290 | if (!other) |
b78ea5fc | 4291 | add_external_diff_name(o->repo, &argv, name, two); |
f3efe787 | 4292 | else { |
b78ea5fc | 4293 | add_external_diff_name(o->repo, &argv, other, two); |
ef8d7ac4 JK |
4294 | strvec_push(&argv, other); |
4295 | strvec_push(&argv, xfrm_msg); | |
6973dcae | 4296 | } |
6973dcae | 4297 | } |
ee7fb0b1 | 4298 | |
ef8d7ac4 JK |
4299 | strvec_pushf(&env, "GIT_DIFF_PATH_COUNTER=%d", ++o->diff_path_counter); |
4300 | strvec_pushf(&env, "GIT_DIFF_PATH_TOTAL=%d", q->nr); | |
ee7fb0b1 | 4301 | |
3aef54e8 JS |
4302 | diff_free_filespec_data(one); |
4303 | diff_free_filespec_data(two); | |
d70a9eb6 | 4304 | if (run_command_v_opt_cd_env(argv.v, RUN_USING_SHELL, NULL, env.v)) |
89294d14 | 4305 | die(_("external diff died, stopping at %s"), name); |
ee7fb0b1 | 4306 | |
6973dcae | 4307 | remove_tempfile(); |
ef8d7ac4 JK |
4308 | strvec_clear(&argv); |
4309 | strvec_clear(&env); | |
6973dcae JH |
4310 | } |
4311 | ||
b67b9612 JH |
4312 | static int similarity_index(struct diff_filepair *p) |
4313 | { | |
4314 | return p->score * 100 / MAX_SCORE; | |
4315 | } | |
4316 | ||
4f03666a JK |
4317 | static const char *diff_abbrev_oid(const struct object_id *oid, int abbrev) |
4318 | { | |
4319 | if (startup_info->have_repository) | |
aab9583f | 4320 | return find_unique_abbrev(oid, abbrev); |
4f03666a JK |
4321 | else { |
4322 | char *hex = oid_to_hex(oid); | |
0d9c527d JH |
4323 | if (abbrev < 0) |
4324 | abbrev = FALLBACK_DEFAULT_ABBREV; | |
02afca1e | 4325 | if (abbrev > the_hash_algo->hexsz) |
033abf97 | 4326 | BUG("oid abbreviation out of range: %d", abbrev); |
43d1948b JB |
4327 | if (abbrev) |
4328 | hex[abbrev] = '\0'; | |
4f03666a JK |
4329 | return hex; |
4330 | } | |
4331 | } | |
4332 | ||
b67b9612 JH |
4333 | static void fill_metainfo(struct strbuf *msg, |
4334 | const char *name, | |
4335 | const char *other, | |
4336 | struct diff_filespec *one, | |
4337 | struct diff_filespec *two, | |
4338 | struct diff_options *o, | |
37466447 | 4339 | struct diff_filepair *p, |
5977744d | 4340 | int *must_show_header, |
37466447 | 4341 | int use_color) |
b67b9612 | 4342 | { |
37466447 BW |
4343 | const char *set = diff_get_color(use_color, DIFF_METAINFO); |
4344 | const char *reset = diff_get_color(use_color, DIFF_RESET); | |
30997bb8 | 4345 | const char *line_prefix = diff_line_prefix(o); |
2715e8a9 | 4346 | struct string_list *more_headers = NULL; |
7be57610 | 4347 | |
296c6bb2 | 4348 | *must_show_header = 1; |
b67b9612 JH |
4349 | strbuf_init(msg, PATH_MAX * 2 + 300); |
4350 | switch (p->status) { | |
4351 | case DIFF_STATUS_COPIED: | |
98ad90fb JH |
4352 | strbuf_addf(msg, "%s%ssimilarity index %d%%", |
4353 | line_prefix, set, similarity_index(p)); | |
4354 | strbuf_addf(msg, "%s\n%s%scopy from ", | |
4355 | reset, line_prefix, set); | |
b67b9612 | 4356 | quote_c_style(name, msg, NULL, 0); |
98ad90fb | 4357 | strbuf_addf(msg, "%s\n%s%scopy to ", reset, line_prefix, set); |
b67b9612 | 4358 | quote_c_style(other, msg, NULL, 0); |
37466447 | 4359 | strbuf_addf(msg, "%s\n", reset); |
b67b9612 JH |
4360 | break; |
4361 | case DIFF_STATUS_RENAMED: | |
98ad90fb JH |
4362 | strbuf_addf(msg, "%s%ssimilarity index %d%%", |
4363 | line_prefix, set, similarity_index(p)); | |
4364 | strbuf_addf(msg, "%s\n%s%srename from ", | |
4365 | reset, line_prefix, set); | |
b67b9612 | 4366 | quote_c_style(name, msg, NULL, 0); |
98ad90fb JH |
4367 | strbuf_addf(msg, "%s\n%s%srename to ", |
4368 | reset, line_prefix, set); | |
b67b9612 | 4369 | quote_c_style(other, msg, NULL, 0); |
37466447 | 4370 | strbuf_addf(msg, "%s\n", reset); |
b67b9612 JH |
4371 | break; |
4372 | case DIFF_STATUS_MODIFIED: | |
4373 | if (p->score) { | |
98ad90fb JH |
4374 | strbuf_addf(msg, "%s%sdissimilarity index %d%%%s\n", |
4375 | line_prefix, | |
37466447 | 4376 | set, similarity_index(p), reset); |
b67b9612 JH |
4377 | break; |
4378 | } | |
4379 | /* fallthru */ | |
4380 | default: | |
296c6bb2 | 4381 | *must_show_header = 0; |
b67b9612 | 4382 | } |
95433eee EN |
4383 | if ((more_headers = additional_headers(o, name))) { |
4384 | add_formatted_headers(msg, more_headers, | |
4385 | line_prefix, set, reset); | |
4386 | *must_show_header = 1; | |
4387 | } | |
9001dc2a | 4388 | if (one && two && !oideq(&one->oid, &two->oid)) { |
de1d81d5 | 4389 | const unsigned hexsz = the_hash_algo->hexsz; |
3046c7f6 ĐTCD |
4390 | int abbrev = o->abbrev ? o->abbrev : DEFAULT_ABBREV; |
4391 | ||
4392 | if (o->flags.full_index) | |
4393 | abbrev = hexsz; | |
b67b9612 | 4394 | |
0d1e0e78 | 4395 | if (o->flags.binary) { |
b67b9612 | 4396 | mmfile_t mf; |
b78ea5fc NTND |
4397 | if ((!fill_mmfile(o->repo, &mf, one) && |
4398 | diff_filespec_is_binary(o->repo, one)) || | |
4399 | (!fill_mmfile(o->repo, &mf, two) && | |
4400 | diff_filespec_is_binary(o->repo, two))) | |
de1d81d5 | 4401 | abbrev = hexsz; |
b67b9612 | 4402 | } |
4f03666a JK |
4403 | strbuf_addf(msg, "%s%sindex %s..%s", line_prefix, set, |
4404 | diff_abbrev_oid(&one->oid, abbrev), | |
4405 | diff_abbrev_oid(&two->oid, abbrev)); | |
b67b9612 JH |
4406 | if (one->mode == two->mode) |
4407 | strbuf_addf(msg, " %06o", one->mode); | |
37466447 | 4408 | strbuf_addf(msg, "%s\n", reset); |
b67b9612 | 4409 | } |
b67b9612 JH |
4410 | } |
4411 | ||
6973dcae JH |
4412 | static void run_diff_cmd(const char *pgm, |
4413 | const char *name, | |
4414 | const char *other, | |
cd676a51 | 4415 | const char *attr_path, |
6973dcae JH |
4416 | struct diff_filespec *one, |
4417 | struct diff_filespec *two, | |
b67b9612 | 4418 | struct strbuf *msg, |
051308f6 | 4419 | struct diff_options *o, |
b67b9612 | 4420 | struct diff_filepair *p) |
6973dcae | 4421 | { |
b67b9612 JH |
4422 | const char *xfrm_msg = NULL; |
4423 | int complete_rewrite = (p->status == DIFF_STATUS_MODIFIED) && p->score; | |
296c6bb2 | 4424 | int must_show_header = 0; |
b67b9612 | 4425 | |
bd8c1a9b | 4426 | |
0d1e0e78 | 4427 | if (o->flags.allow_external) { |
acd00ea0 NTND |
4428 | struct userdiff_driver *drv; |
4429 | ||
4430 | drv = userdiff_find_by_path(o->repo->index, attr_path); | |
be58e70d JK |
4431 | if (drv && drv->external) |
4432 | pgm = drv->external; | |
f1af60bd JH |
4433 | } |
4434 | ||
37466447 BW |
4435 | if (msg) { |
4436 | /* | |
4437 | * don't use colors when the header is intended for an | |
4438 | * external diff driver | |
4439 | */ | |
4440 | fill_metainfo(msg, name, other, one, two, o, p, | |
5977744d | 4441 | &must_show_header, |
daa0c3d9 | 4442 | want_color(o->use_color) && !pgm); |
37466447 BW |
4443 | xfrm_msg = msg->len ? msg->buf : NULL; |
4444 | } | |
4445 | ||
6973dcae | 4446 | if (pgm) { |
4bc17927 | 4447 | run_external_diff(pgm, name, other, one, two, xfrm_msg, o); |
6973dcae JH |
4448 | return; |
4449 | } | |
4450 | if (one && two) | |
4451 | builtin_diff(name, other ? other : name, | |
296c6bb2 CC |
4452 | one, two, xfrm_msg, must_show_header, |
4453 | o, complete_rewrite); | |
6973dcae | 4454 | else |
c0c77734 | 4455 | fprintf(o->file, "* Unmerged path %s\n", name); |
6973dcae JH |
4456 | } |
4457 | ||
58bf2a4c | 4458 | static void diff_fill_oid_info(struct diff_filespec *one, struct index_state *istate) |
6973dcae JH |
4459 | { |
4460 | if (DIFF_FILE_VALID(one)) { | |
41c9560e | 4461 | if (!one->oid_valid) { |
6973dcae | 4462 | struct stat st; |
4682d852 | 4463 | if (one->is_stdin) { |
a0d12c44 | 4464 | oidclr(&one->oid); |
5332b2af JS |
4465 | return; |
4466 | } | |
6973dcae | 4467 | if (lstat(one->path, &st) < 0) |
0721c314 | 4468 | die_errno("stat '%s'", one->path); |
58bf2a4c | 4469 | if (index_path(istate, &one->oid, one->path, &st, 0)) |
d7530708 | 4470 | die("cannot hash %s", one->path); |
6973dcae JH |
4471 | } |
4472 | } | |
4473 | else | |
a0d12c44 | 4474 | oidclr(&one->oid); |
6973dcae JH |
4475 | } |
4476 | ||
cd676a51 JH |
4477 | static void strip_prefix(int prefix_length, const char **namep, const char **otherp) |
4478 | { | |
4479 | /* Strip the prefix but do not molest /dev/null and absolute paths */ | |
ffd04e92 | 4480 | if (*namep && !is_absolute_path(*namep)) { |
cd676a51 | 4481 | *namep += prefix_length; |
d8faea9d JN |
4482 | if (**namep == '/') |
4483 | ++*namep; | |
4484 | } | |
ffd04e92 | 4485 | if (*otherp && !is_absolute_path(*otherp)) { |
cd676a51 | 4486 | *otherp += prefix_length; |
d8faea9d JN |
4487 | if (**otherp == '/') |
4488 | ++*otherp; | |
4489 | } | |
cd676a51 JH |
4490 | } |
4491 | ||
6973dcae JH |
4492 | static void run_diff(struct diff_filepair *p, struct diff_options *o) |
4493 | { | |
4494 | const char *pgm = external_diff(); | |
663af342 | 4495 | struct strbuf msg; |
663af342 PH |
4496 | struct diff_filespec *one = p->one; |
4497 | struct diff_filespec *two = p->two; | |
6973dcae JH |
4498 | const char *name; |
4499 | const char *other; | |
cd676a51 | 4500 | const char *attr_path; |
663af342 | 4501 | |
f2d2a5de SB |
4502 | name = one->path; |
4503 | other = (strcmp(name, two->path) ? two->path : NULL); | |
cd676a51 JH |
4504 | attr_path = name; |
4505 | if (o->prefix_length) | |
4506 | strip_prefix(o->prefix_length, &name, &other); | |
6973dcae | 4507 | |
0d1e0e78 | 4508 | if (!o->flags.allow_external) |
bd8c1a9b JH |
4509 | pgm = NULL; |
4510 | ||
6973dcae | 4511 | if (DIFF_PAIR_UNMERGED(p)) { |
cd676a51 | 4512 | run_diff_cmd(pgm, name, NULL, attr_path, |
b67b9612 | 4513 | NULL, NULL, NULL, o, p); |
6973dcae JH |
4514 | return; |
4515 | } | |
4516 | ||
58bf2a4c NTND |
4517 | diff_fill_oid_info(one, o->repo->index); |
4518 | diff_fill_oid_info(two, o->repo->index); | |
6973dcae | 4519 | |
6973dcae JH |
4520 | if (!pgm && |
4521 | DIFF_FILE_VALID(one) && DIFF_FILE_VALID(two) && | |
4522 | (S_IFMT & one->mode) != (S_IFMT & two->mode)) { | |
b67b9612 JH |
4523 | /* |
4524 | * a filepair that changes between file and symlink | |
6973dcae JH |
4525 | * needs to be split into deletion and creation. |
4526 | */ | |
4527 | struct diff_filespec *null = alloc_filespec(two->path); | |
cd676a51 | 4528 | run_diff_cmd(NULL, name, other, attr_path, |
b78ea5fc NTND |
4529 | one, null, &msg, |
4530 | o, p); | |
6973dcae | 4531 | free(null); |
b67b9612 JH |
4532 | strbuf_release(&msg); |
4533 | ||
6973dcae | 4534 | null = alloc_filespec(one->path); |
cd676a51 | 4535 | run_diff_cmd(NULL, name, other, attr_path, |
b67b9612 | 4536 | null, two, &msg, o, p); |
6973dcae JH |
4537 | free(null); |
4538 | } | |
4539 | else | |
cd676a51 | 4540 | run_diff_cmd(pgm, name, other, attr_path, |
b67b9612 | 4541 | one, two, &msg, o, p); |
6973dcae | 4542 | |
663af342 | 4543 | strbuf_release(&msg); |
6973dcae JH |
4544 | } |
4545 | ||
4546 | static void run_diffstat(struct diff_filepair *p, struct diff_options *o, | |
4547 | struct diffstat_t *diffstat) | |
4548 | { | |
4549 | const char *name; | |
4550 | const char *other; | |
4551 | ||
4552 | if (DIFF_PAIR_UNMERGED(p)) { | |
4553 | /* unmerged */ | |
b78ea5fc NTND |
4554 | builtin_diffstat(p->one->path, NULL, NULL, NULL, |
4555 | diffstat, o, p); | |
6973dcae JH |
4556 | return; |
4557 | } | |
4558 | ||
4559 | name = p->one->path; | |
4560 | other = (strcmp(name, p->two->path) ? p->two->path : NULL); | |
4561 | ||
cd676a51 JH |
4562 | if (o->prefix_length) |
4563 | strip_prefix(o->prefix_length, &name, &other); | |
4564 | ||
58bf2a4c NTND |
4565 | diff_fill_oid_info(p->one, o->repo->index); |
4566 | diff_fill_oid_info(p->two, o->repo->index); | |
6973dcae | 4567 | |
b78ea5fc NTND |
4568 | builtin_diffstat(name, other, p->one, p->two, |
4569 | diffstat, o, p); | |
6973dcae JH |
4570 | } |
4571 | ||
88246898 JS |
4572 | static void run_checkdiff(struct diff_filepair *p, struct diff_options *o) |
4573 | { | |
4574 | const char *name; | |
4575 | const char *other; | |
cd676a51 | 4576 | const char *attr_path; |
88246898 JS |
4577 | |
4578 | if (DIFF_PAIR_UNMERGED(p)) { | |
4579 | /* unmerged */ | |
4580 | return; | |
4581 | } | |
4582 | ||
4583 | name = p->one->path; | |
4584 | other = (strcmp(name, p->two->path) ? p->two->path : NULL); | |
cd676a51 JH |
4585 | attr_path = other ? other : name; |
4586 | ||
4587 | if (o->prefix_length) | |
4588 | strip_prefix(o->prefix_length, &name, &other); | |
88246898 | 4589 | |
58bf2a4c NTND |
4590 | diff_fill_oid_info(p->one, o->repo->index); |
4591 | diff_fill_oid_info(p->two, o->repo->index); | |
88246898 | 4592 | |
cd676a51 | 4593 | builtin_checkdiff(name, other, attr_path, p->one, p->two, o); |
88246898 JS |
4594 | } |
4595 | ||
4a288478 NTND |
4596 | static void prep_parse_options(struct diff_options *options); |
4597 | ||
e6757652 | 4598 | void repo_diff_setup(struct repository *r, struct diff_options *options) |
6973dcae | 4599 | { |
be4f2b40 | 4600 | memcpy(options, &default_diff_options, sizeof(*options)); |
c0c77734 DB |
4601 | |
4602 | options->file = stdout; | |
e6757652 | 4603 | options->repo = r; |
c0c77734 | 4604 | |
7648b79e SB |
4605 | options->output_indicators[OUTPUT_INDICATOR_NEW] = '+'; |
4606 | options->output_indicators[OUTPUT_INDICATOR_OLD] = '-'; | |
4607 | options->output_indicators[OUTPUT_INDICATOR_CONTEXT] = ' '; | |
43d1948b | 4608 | options->abbrev = DEFAULT_ABBREV; |
6973dcae JH |
4609 | options->line_termination = '\n'; |
4610 | options->break_opt = -1; | |
4611 | options->rename_limit = -1; | |
712d2c7d | 4612 | options->dirstat_permille = diff_dirstat_permille_default; |
6468a4e5 | 4613 | options->context = diff_context_default; |
c4888677 | 4614 | options->interhunkcontext = diff_interhunk_context_default; |
a17505f2 | 4615 | options->ws_error_highlight = ws_error_highlight_default; |
0d1e0e78 | 4616 | options->flags.rename_empty = 1; |
c28ded83 | 4617 | options->flags.relative_name = diff_relative; |
15af58c1 | 4618 | options->objfind = NULL; |
6973dcae | 4619 | |
72441af7 | 4620 | /* pathchange left =NULL by default */ |
6973dcae JH |
4621 | options->change = diff_change; |
4622 | options->add_remove = diff_addremove; | |
f1c96261 | 4623 | options->use_color = diff_use_color_default; |
b68ea12e | 4624 | options->detect_rename = diff_detect_rename_default; |
07ab4dec | 4625 | options->xdl_opts |= diff_algorithm; |
433860f3 MH |
4626 | if (diff_indent_heuristic) |
4627 | DIFF_XDL_SET(options, INDENT_HEURISTIC); | |
eab9a40b | 4628 | |
6d8940b5 SB |
4629 | options->orderfile = diff_order_file_cfg; |
4630 | ||
8ef93124 SJ |
4631 | if (!options->flags.ignore_submodule_set) |
4632 | options->flags.ignore_untracked_in_submodules = 1; | |
4633 | ||
f89504dd EC |
4634 | if (diff_no_prefix) { |
4635 | options->a_prefix = options->b_prefix = ""; | |
4636 | } else if (!diff_mnemonic_prefix) { | |
a5a818ee JH |
4637 | options->a_prefix = "a/"; |
4638 | options->b_prefix = "b/"; | |
4639 | } | |
2e2d5ac1 SB |
4640 | |
4641 | options->color_moved = diff_color_moved_default; | |
626c0b5d | 4642 | options->color_moved_ws_handling = diff_color_moved_ws_default; |
4a288478 NTND |
4643 | |
4644 | prep_parse_options(options); | |
6973dcae JH |
4645 | } |
4646 | ||
4d4d4eaa JS |
4647 | static const char diff_status_letters[] = { |
4648 | DIFF_STATUS_ADDED, | |
4649 | DIFF_STATUS_COPIED, | |
4650 | DIFF_STATUS_DELETED, | |
4651 | DIFF_STATUS_MODIFIED, | |
4652 | DIFF_STATUS_RENAMED, | |
4653 | DIFF_STATUS_TYPE_CHANGED, | |
4654 | DIFF_STATUS_UNKNOWN, | |
4655 | DIFF_STATUS_UNMERGED, | |
4656 | DIFF_STATUS_FILTER_AON, | |
4657 | DIFF_STATUS_FILTER_BROKEN, | |
4658 | '\0', | |
4659 | }; | |
4660 | ||
4661 | static unsigned int filter_bit['Z' + 1]; | |
4662 | ||
4663 | static void prepare_filter_bits(void) | |
4664 | { | |
4665 | int i; | |
4666 | ||
4667 | if (!filter_bit[DIFF_STATUS_ADDED]) { | |
4668 | for (i = 0; diff_status_letters[i]; i++) | |
4669 | filter_bit[(int) diff_status_letters[i]] = (1 << i); | |
4670 | } | |
4671 | } | |
4672 | ||
4673 | static unsigned filter_bit_tst(char status, const struct diff_options *opt) | |
4674 | { | |
4675 | return opt->filter & filter_bit[(int) status]; | |
4676 | } | |
4677 | ||
4678 | unsigned diff_filter_bit(char status) | |
4679 | { | |
4680 | prepare_filter_bits(); | |
4681 | return filter_bit[(int) status]; | |
4682 | } | |
4683 | ||
28452655 | 4684 | void diff_setup_done(struct diff_options *options) |
6973dcae | 4685 | { |
4d8c51aa SB |
4686 | unsigned check_mask = DIFF_FORMAT_NAME | |
4687 | DIFF_FORMAT_NAME_STATUS | | |
4688 | DIFF_FORMAT_CHECKDIFF | | |
4689 | DIFF_FORMAT_NO_OUTPUT; | |
de1d81d5 | 4690 | /* |
4691 | * This must be signed because we're comparing against a potentially | |
4692 | * negative value. | |
4693 | */ | |
4694 | const int hexsz = the_hash_algo->hexsz; | |
d7de00f7 | 4695 | |
6c374008 JH |
4696 | if (options->set_default) |
4697 | options->set_default(options); | |
4698 | ||
4d8c51aa | 4699 | if (HAS_MULTI_BITS(options->output_format & check_mask)) |
246cac85 JNA |
4700 | die(_("options '%s', '%s', '%s', and '%s' cannot be used together"), |
4701 | "--name-only", "--name-status", "--check", "-s"); | |
d7de00f7 | 4702 | |
5e505257 | 4703 | if (HAS_MULTI_BITS(options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK)) |
246cac85 JNA |
4704 | die(_("options '%s', '%s', and '%s' cannot be used together"), |
4705 | "-G", "-S", "--find-object"); | |
5e505257 | 4706 | |
188e9e28 | 4707 | if (HAS_MULTI_BITS(options->pickaxe_opts & DIFF_PICKAXE_KINDS_G_REGEX_MASK)) |
246cac85 JNA |
4708 | die(_("options '%s' and '%s' cannot be used together, use '%s' with '%s'"), |
4709 | "-G", "--pickaxe-regex", "--pickaxe-regex", "-S"); | |
188e9e28 | 4710 | |
d26ec880 | 4711 | if (HAS_MULTI_BITS(options->pickaxe_opts & DIFF_PICKAXE_KINDS_ALL_OBJFIND_MASK)) |
246cac85 JNA |
4712 | die(_("options '%s' and '%s' cannot be used together, use '%s' with '%s' and '%s'"), |
4713 | "--pickaxe-all", "--find-object", "--pickaxe-all", "-G", "-S"); | |
d26ec880 | 4714 | |
f245194f JH |
4715 | /* |
4716 | * Most of the time we can say "there are changes" | |
4717 | * only by checking if there are changed paths, but | |
4718 | * --ignore-whitespace* options force us to look | |
97bf2a08 | 4719 | * inside contents. |
f245194f JH |
4720 | */ |
4721 | ||
50f04394 JH |
4722 | if ((options->xdl_opts & XDF_WHITESPACE_FLAGS) || |
4723 | options->ignore_regex_nr) | |
0d1e0e78 | 4724 | options->flags.diff_from_contents = 1; |
f245194f | 4725 | else |
0d1e0e78 | 4726 | options->flags.diff_from_contents = 0; |
f245194f | 4727 | |
0d1e0e78 | 4728 | if (options->flags.find_copies_harder) |
03b9d560 JH |
4729 | options->detect_rename = DIFF_DETECT_COPY; |
4730 | ||
0d1e0e78 | 4731 | if (!options->flags.relative_name) |
cd676a51 JH |
4732 | options->prefix = NULL; |
4733 | if (options->prefix) | |
4734 | options->prefix_length = strlen(options->prefix); | |
4735 | else | |
4736 | options->prefix_length = 0; | |
4737 | ||
c6744349 TH |
4738 | if (options->output_format & (DIFF_FORMAT_NAME | |
4739 | DIFF_FORMAT_NAME_STATUS | | |
4740 | DIFF_FORMAT_CHECKDIFF | | |
4741 | DIFF_FORMAT_NO_OUTPUT)) | |
4742 | options->output_format &= ~(DIFF_FORMAT_RAW | | |
74e2abe5 | 4743 | DIFF_FORMAT_NUMSTAT | |
c6744349 | 4744 | DIFF_FORMAT_DIFFSTAT | |
ebd124c6 | 4745 | DIFF_FORMAT_SHORTSTAT | |
7df7c019 | 4746 | DIFF_FORMAT_DIRSTAT | |
c6744349 TH |
4747 | DIFF_FORMAT_SUMMARY | |
4748 | DIFF_FORMAT_PATCH); | |
4749 | ||
6973dcae JH |
4750 | /* |
4751 | * These cases always need recursive; we do not drop caller-supplied | |
4752 | * recursive bits for other formats here. | |
4753 | */ | |
c6744349 | 4754 | if (options->output_format & (DIFF_FORMAT_PATCH | |
74e2abe5 | 4755 | DIFF_FORMAT_NUMSTAT | |
c6744349 | 4756 | DIFF_FORMAT_DIFFSTAT | |
ebd124c6 | 4757 | DIFF_FORMAT_SHORTSTAT | |
7df7c019 | 4758 | DIFF_FORMAT_DIRSTAT | |
d7014dc0 | 4759 | DIFF_FORMAT_SUMMARY | |
c6744349 | 4760 | DIFF_FORMAT_CHECKDIFF)) |
0d1e0e78 | 4761 | options->flags.recursive = 1; |
5e363541 | 4762 | /* |
3969cf7d | 4763 | * Also pickaxe would not work very well if you do not say recursive |
5e363541 | 4764 | */ |
cf63051a | 4765 | if (options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK) |
0d1e0e78 | 4766 | options->flags.recursive = 1; |
ae6d5c1b JL |
4767 | /* |
4768 | * When patches are generated, submodules diffed against the work tree | |
4769 | * must be checked for dirtiness too so it can be shown in the output | |
4770 | */ | |
4771 | if (options->output_format & DIFF_FORMAT_PATCH) | |
0d1e0e78 | 4772 | options->flags.dirty_submodules = 1; |
5e363541 | 4773 | |
6973dcae JH |
4774 | if (options->detect_rename && options->rename_limit < 0) |
4775 | options->rename_limit = diff_rename_limit_default; | |
de1d81d5 | 4776 | if (hexsz < options->abbrev) |
4777 | options->abbrev = hexsz; /* full */ | |
6973dcae | 4778 | |
68aacb2f JH |
4779 | /* |
4780 | * It does not make sense to show the first hit we happened | |
4781 | * to have found. It does not make sense not to return with | |
4782 | * exit code in such a case either. | |
4783 | */ | |
0d1e0e78 | 4784 | if (options->flags.quick) { |
68aacb2f | 4785 | options->output_format = DIFF_FORMAT_NO_OUTPUT; |
0d1e0e78 | 4786 | options->flags.exit_with_status = 1; |
68aacb2f | 4787 | } |
ee7fb0b1 | 4788 | |
0ea7d5b6 | 4789 | options->diff_path_counter = 0; |
b0e2c999 | 4790 | |
0d1e0e78 | 4791 | if (options->flags.follow_renames && options->pathspec.nr != 1) |
dd63f169 | 4792 | die(_("--follow requires exactly one pathspec")); |
2e2d5ac1 SB |
4793 | |
4794 | if (!options->use_color || external_diff()) | |
4795 | options->color_moved = 0; | |
4a288478 | 4796 | |
75408ca9 JS |
4797 | if (options->filter_not) { |
4798 | if (!options->filter) | |
4799 | options->filter = ~filter_bit[DIFF_STATUS_FILTER_AON]; | |
4800 | options->filter &= ~options->filter_not; | |
4801 | } | |
4802 | ||
4a288478 | 4803 | FREE_AND_NULL(options->parseopts); |
6973dcae JH |
4804 | } |
4805 | ||
dea007fb MM |
4806 | int parse_long_opt(const char *opt, const char **argv, |
4807 | const char **optarg) | |
4808 | { | |
4809 | const char *arg = argv[0]; | |
95b567c7 | 4810 | if (!skip_prefix(arg, "--", &arg)) |
dea007fb | 4811 | return 0; |
95b567c7 | 4812 | if (!skip_prefix(arg, opt, &arg)) |
dea007fb | 4813 | return 0; |
b0d12fc9 | 4814 | if (*arg == '=') { /* stuck form: --option=value */ |
dea007fb MM |
4815 | *optarg = arg + 1; |
4816 | return 1; | |
4817 | } | |
4818 | if (*arg != '\0') | |
4819 | return 0; | |
4820 | /* separate form: --option value */ | |
4821 | if (!argv[1]) | |
4822 | die("Option '--%s' requires a value", opt); | |
4823 | *optarg = argv[1]; | |
4824 | return 2; | |
4825 | } | |
4826 | ||
84b5089e | 4827 | static int diff_opt_stat(const struct option *opt, const char *value, int unset) |
4d7f7a4a | 4828 | { |
84b5089e | 4829 | struct diff_options *options = opt->value; |
4d7f7a4a JN |
4830 | int width = options->stat_width; |
4831 | int name_width = options->stat_name_width; | |
969fe57b | 4832 | int graph_width = options->stat_graph_width; |
808e1db2 | 4833 | int count = options->stat_count; |
84b5089e | 4834 | char *end; |
4d7f7a4a | 4835 | |
84b5089e | 4836 | BUG_ON_OPT_NEG(unset); |
4d7f7a4a | 4837 | |
84b5089e NTND |
4838 | if (!strcmp(opt->long_name, "stat")) { |
4839 | if (value) { | |
4840 | width = strtoul(value, &end, 10); | |
4841 | if (*end == ',') | |
4842 | name_width = strtoul(end+1, &end, 10); | |
4843 | if (*end == ',') | |
4844 | count = strtoul(end+1, &end, 10); | |
4845 | if (*end) | |
4846 | return error(_("invalid --stat value: %s"), value); | |
1e57208e | 4847 | } |
84b5089e NTND |
4848 | } else if (!strcmp(opt->long_name, "stat-width")) { |
4849 | width = strtoul(value, &end, 10); | |
4850 | if (*end) | |
4851 | return error(_("%s expects a numerical value"), | |
4852 | opt->long_name); | |
4853 | } else if (!strcmp(opt->long_name, "stat-name-width")) { | |
4854 | name_width = strtoul(value, &end, 10); | |
4855 | if (*end) | |
4856 | return error(_("%s expects a numerical value"), | |
4857 | opt->long_name); | |
4858 | } else if (!strcmp(opt->long_name, "stat-graph-width")) { | |
4859 | graph_width = strtoul(value, &end, 10); | |
4860 | if (*end) | |
4861 | return error(_("%s expects a numerical value"), | |
4862 | opt->long_name); | |
4863 | } else if (!strcmp(opt->long_name, "stat-count")) { | |
4864 | count = strtoul(value, &end, 10); | |
4865 | if (*end) | |
4866 | return error(_("%s expects a numerical value"), | |
4867 | opt->long_name); | |
4868 | } else | |
4869 | BUG("%s should not get here", opt->long_name); | |
4d7f7a4a | 4870 | |
4d7f7a4a JN |
4871 | options->output_format |= DIFF_FORMAT_DIFFSTAT; |
4872 | options->stat_name_width = name_width; | |
969fe57b | 4873 | options->stat_graph_width = graph_width; |
4d7f7a4a | 4874 | options->stat_width = width; |
808e1db2 | 4875 | options->stat_count = count; |
84b5089e | 4876 | return 0; |
4d7f7a4a JN |
4877 | } |
4878 | ||
333f3fb0 JH |
4879 | static int parse_dirstat_opt(struct diff_options *options, const char *params) |
4880 | { | |
51670fc8 JH |
4881 | struct strbuf errmsg = STRBUF_INIT; |
4882 | if (parse_dirstat_params(options, params, &errmsg)) | |
7478ac57 | 4883 | die(_("Failed to parse --dirstat/-X option parameter:\n%s"), |
51670fc8 JH |
4884 | errmsg.buf); |
4885 | strbuf_release(&errmsg); | |
333f3fb0 JH |
4886 | /* |
4887 | * The caller knows a dirstat-related option is given from the command | |
4888 | * line; allow it to say "return this_function();" | |
4889 | */ | |
4890 | options->output_format |= DIFF_FORMAT_DIRSTAT; | |
4891 | return 1; | |
4892 | } | |
4893 | ||
d2d3f273 NTND |
4894 | static int diff_opt_diff_filter(const struct option *option, |
4895 | const char *optarg, int unset) | |
1ecc1cbd | 4896 | { |
d2d3f273 | 4897 | struct diff_options *opt = option->value; |
1ecc1cbd JH |
4898 | int i, optch; |
4899 | ||
d2d3f273 | 4900 | BUG_ON_OPT_NEG(unset); |
1ecc1cbd | 4901 | prepare_filter_bits(); |
7f2ea5f0 | 4902 | |
1ecc1cbd JH |
4903 | for (i = 0; (optch = optarg[i]) != '\0'; i++) { |
4904 | unsigned int bit; | |
7f2ea5f0 JH |
4905 | int negate; |
4906 | ||
4907 | if ('a' <= optch && optch <= 'z') { | |
4908 | negate = 1; | |
4909 | optch = toupper(optch); | |
4910 | } else { | |
4911 | negate = 0; | |
4912 | } | |
1ecc1cbd JH |
4913 | |
4914 | bit = (0 <= optch && optch <= 'Z') ? filter_bit[optch] : 0; | |
4915 | if (!bit) | |
d2d3f273 NTND |
4916 | return error(_("unknown change class '%c' in --diff-filter=%s"), |
4917 | optarg[i], optarg); | |
7f2ea5f0 | 4918 | if (negate) |
75408ca9 | 4919 | opt->filter_not |= bit; |
7f2ea5f0 JH |
4920 | else |
4921 | opt->filter |= bit; | |
1ecc1cbd JH |
4922 | } |
4923 | return 0; | |
4924 | } | |
4925 | ||
3b335762 NTND |
4926 | static void enable_patch_output(int *fmt) |
4927 | { | |
71482d38 MM |
4928 | *fmt &= ~DIFF_FORMAT_NO_OUTPUT; |
4929 | *fmt |= DIFF_FORMAT_PATCH; | |
4930 | } | |
4931 | ||
5a749d9f NTND |
4932 | static int diff_opt_ws_error_highlight(const struct option *option, |
4933 | const char *arg, int unset) | |
b8767f79 | 4934 | { |
5a749d9f | 4935 | struct diff_options *opt = option->value; |
077965f8 | 4936 | int val = parse_ws_error_highlight(arg); |
b8767f79 | 4937 | |
5a749d9f NTND |
4938 | BUG_ON_OPT_NEG(unset); |
4939 | if (val < 0) | |
4940 | return error(_("unknown value after ws-error-highlight=%.*s"), | |
4941 | -1 - val, arg); | |
b8767f79 | 4942 | opt->ws_error_highlight = val; |
5a749d9f | 4943 | return 0; |
b8767f79 JH |
4944 | } |
4945 | ||
a75f28cb NTND |
4946 | static int diff_opt_find_object(const struct option *option, |
4947 | const char *arg, int unset) | |
15af58c1 | 4948 | { |
a75f28cb | 4949 | struct diff_options *opt = option->value; |
15af58c1 SB |
4950 | struct object_id oid; |
4951 | ||
a75f28cb | 4952 | BUG_ON_OPT_NEG(unset); |
15af58c1 | 4953 | if (get_oid(arg, &oid)) |
a75f28cb | 4954 | return error(_("unable to resolve '%s'"), arg); |
15af58c1 SB |
4955 | |
4956 | if (!opt->objfind) | |
ca56dadb | 4957 | CALLOC_ARRAY(opt->objfind, 1); |
15af58c1 SB |
4958 | |
4959 | opt->pickaxe_opts |= DIFF_PICKAXE_KIND_OBJFIND; | |
4960 | opt->flags.recursive = 1; | |
4961 | opt->flags.tree_in_recursive = 1; | |
4962 | oidset_insert(opt->objfind, &oid); | |
a75f28cb | 4963 | return 0; |
15af58c1 SB |
4964 | } |
4965 | ||
df84a436 NTND |
4966 | static int diff_opt_anchored(const struct option *opt, |
4967 | const char *arg, int unset) | |
4968 | { | |
4969 | struct diff_options *options = opt->value; | |
4970 | ||
4971 | BUG_ON_OPT_NEG(unset); | |
4972 | options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF); | |
4973 | ALLOC_GROW(options->anchors, options->anchors_nr + 1, | |
4974 | options->anchors_alloc); | |
4975 | options->anchors[options->anchors_nr++] = xstrdup(arg); | |
4976 | return 0; | |
4977 | } | |
4978 | ||
6d9af6f4 NTND |
4979 | static int diff_opt_binary(const struct option *opt, |
4980 | const char *arg, int unset) | |
4981 | { | |
4982 | struct diff_options *options = opt->value; | |
4983 | ||
4984 | BUG_ON_OPT_NEG(unset); | |
4985 | BUG_ON_OPT_ARG(arg); | |
4986 | enable_patch_output(&options->output_format); | |
4987 | options->flags.binary = 1; | |
4988 | return 0; | |
4989 | } | |
4990 | ||
ced4e179 NTND |
4991 | static int diff_opt_break_rewrites(const struct option *opt, |
4992 | const char *arg, int unset) | |
4993 | { | |
4994 | int *break_opt = opt->value; | |
4995 | int opt1, opt2; | |
4996 | ||
4997 | BUG_ON_OPT_NEG(unset); | |
4998 | if (!arg) | |
4999 | arg = ""; | |
5000 | opt1 = parse_rename_score(&arg); | |
5001 | if (*arg == 0) | |
5002 | opt2 = 0; | |
5003 | else if (*arg != '/') | |
5004 | return error(_("%s expects <n>/<m> form"), opt->long_name); | |
5005 | else { | |
5006 | arg++; | |
5007 | opt2 = parse_rename_score(&arg); | |
5008 | } | |
5009 | if (*arg != 0) | |
5010 | return error(_("%s expects <n>/<m> form"), opt->long_name); | |
5011 | *break_opt = opt1 | (opt2 << 16); | |
5012 | return 0; | |
5013 | } | |
5014 | ||
af2f3680 NTND |
5015 | static int diff_opt_char(const struct option *opt, |
5016 | const char *arg, int unset) | |
5017 | { | |
5018 | char *value = opt->value; | |
5019 | ||
5020 | BUG_ON_OPT_NEG(unset); | |
5021 | if (arg[1]) | |
5022 | return error(_("%s expects a character, got '%s'"), | |
5023 | opt->long_name, arg); | |
5024 | *value = arg[0]; | |
5025 | return 0; | |
5026 | } | |
5027 | ||
59311a98 NTND |
5028 | static int diff_opt_color_moved(const struct option *opt, |
5029 | const char *arg, int unset) | |
5030 | { | |
5031 | struct diff_options *options = opt->value; | |
5032 | ||
5033 | if (unset) { | |
5034 | options->color_moved = COLOR_MOVED_NO; | |
5035 | } else if (!arg) { | |
5036 | if (diff_color_moved_default) | |
5037 | options->color_moved = diff_color_moved_default; | |
5038 | if (options->color_moved == COLOR_MOVED_NO) | |
5039 | options->color_moved = COLOR_MOVED_DEFAULT; | |
5040 | } else { | |
5041 | int cm = parse_color_moved(arg); | |
5042 | if (cm < 0) | |
5043 | return error(_("bad --color-moved argument: %s"), arg); | |
5044 | options->color_moved = cm; | |
5045 | } | |
5046 | return 0; | |
5047 | } | |
5048 | ||
8ce2020f NTND |
5049 | static int diff_opt_color_moved_ws(const struct option *opt, |
5050 | const char *arg, int unset) | |
5051 | { | |
5052 | struct diff_options *options = opt->value; | |
5053 | unsigned cm; | |
5054 | ||
bb987290 NTND |
5055 | if (unset) { |
5056 | options->color_moved_ws_handling = 0; | |
5057 | return 0; | |
5058 | } | |
5059 | ||
8ce2020f NTND |
5060 | cm = parse_color_moved_ws(arg); |
5061 | if (cm & COLOR_MOVED_WS_ERROR) | |
5062 | return error(_("invalid mode '%s' in --color-moved-ws"), arg); | |
5063 | options->color_moved_ws_handling = cm; | |
5064 | return 0; | |
5065 | } | |
5066 | ||
212db69d NTND |
5067 | static int diff_opt_color_words(const struct option *opt, |
5068 | const char *arg, int unset) | |
5069 | { | |
5070 | struct diff_options *options = opt->value; | |
5071 | ||
5072 | BUG_ON_OPT_NEG(unset); | |
5073 | options->use_color = 1; | |
5074 | options->word_diff = DIFF_WORDS_COLOR; | |
5075 | options->word_regex = arg; | |
5076 | return 0; | |
5077 | } | |
5078 | ||
7d7942b7 NTND |
5079 | static int diff_opt_compact_summary(const struct option *opt, |
5080 | const char *arg, int unset) | |
5081 | { | |
5082 | struct diff_options *options = opt->value; | |
5083 | ||
5084 | BUG_ON_OPT_ARG(arg); | |
5085 | if (unset) { | |
5086 | options->flags.stat_with_summary = 0; | |
5087 | } else { | |
5088 | options->flags.stat_with_summary = 1; | |
5089 | options->output_format |= DIFF_FORMAT_DIFFSTAT; | |
5090 | } | |
5091 | return 0; | |
5092 | } | |
5093 | ||
10f35b1c NTND |
5094 | static int diff_opt_diff_algorithm(const struct option *opt, |
5095 | const char *arg, int unset) | |
5096 | { | |
5097 | struct diff_options *options = opt->value; | |
5098 | long value = parse_algorithm_value(arg); | |
5099 | ||
5100 | BUG_ON_OPT_NEG(unset); | |
5101 | if (value < 0) | |
5102 | return error(_("option diff-algorithm accepts \"myers\", " | |
5103 | "\"minimal\", \"patience\" and \"histogram\"")); | |
5104 | ||
5105 | /* clear out previous settings */ | |
5106 | DIFF_XDL_CLR(options, NEED_MINIMAL); | |
5107 | options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK; | |
5108 | options->xdl_opts |= value; | |
5109 | return 0; | |
5110 | } | |
5111 | ||
4ce7aab5 NTND |
5112 | static int diff_opt_dirstat(const struct option *opt, |
5113 | const char *arg, int unset) | |
5114 | { | |
5115 | struct diff_options *options = opt->value; | |
5116 | ||
5117 | BUG_ON_OPT_NEG(unset); | |
5118 | if (!strcmp(opt->long_name, "cumulative")) { | |
5119 | if (arg) | |
5120 | BUG("how come --cumulative take a value?"); | |
5121 | arg = "cumulative"; | |
5122 | } else if (!strcmp(opt->long_name, "dirstat-by-file")) | |
5123 | parse_dirstat_opt(options, "files"); | |
5124 | parse_dirstat_opt(options, arg ? arg : ""); | |
5125 | return 0; | |
5126 | } | |
5127 | ||
7f64850d NTND |
5128 | static int diff_opt_find_copies(const struct option *opt, |
5129 | const char *arg, int unset) | |
5130 | { | |
5131 | struct diff_options *options = opt->value; | |
5132 | ||
5133 | BUG_ON_OPT_NEG(unset); | |
5134 | if (!arg) | |
5135 | arg = ""; | |
5136 | options->rename_score = parse_rename_score(&arg); | |
5137 | if (*arg != 0) | |
5138 | return error(_("invalid argument to %s"), opt->long_name); | |
5139 | ||
5140 | if (options->detect_rename == DIFF_DETECT_COPY) | |
5141 | options->flags.find_copies_harder = 1; | |
5142 | else | |
5143 | options->detect_rename = DIFF_DETECT_COPY; | |
5144 | ||
5145 | return 0; | |
5146 | } | |
5147 | ||
f476308b NTND |
5148 | static int diff_opt_find_renames(const struct option *opt, |
5149 | const char *arg, int unset) | |
5150 | { | |
5151 | struct diff_options *options = opt->value; | |
5152 | ||
5153 | BUG_ON_OPT_NEG(unset); | |
5154 | if (!arg) | |
5155 | arg = ""; | |
5156 | options->rename_score = parse_rename_score(&arg); | |
5157 | if (*arg != 0) | |
5158 | return error(_("invalid argument to %s"), opt->long_name); | |
5159 | ||
5160 | options->detect_rename = DIFF_DETECT_RENAME; | |
5161 | return 0; | |
5162 | } | |
5163 | ||
1e9250b5 NTND |
5164 | static int diff_opt_follow(const struct option *opt, |
5165 | const char *arg, int unset) | |
5166 | { | |
5167 | struct diff_options *options = opt->value; | |
5168 | ||
5169 | BUG_ON_OPT_ARG(arg); | |
5170 | if (unset) { | |
5171 | options->flags.follow_renames = 0; | |
5172 | options->flags.default_follow_renames = 0; | |
5173 | } else { | |
5174 | options->flags.follow_renames = 1; | |
5175 | } | |
5176 | return 0; | |
5177 | } | |
5178 | ||
b680ee14 NTND |
5179 | static int diff_opt_ignore_submodules(const struct option *opt, |
5180 | const char *arg, int unset) | |
5181 | { | |
5182 | struct diff_options *options = opt->value; | |
5183 | ||
5184 | BUG_ON_OPT_NEG(unset); | |
5185 | if (!arg) | |
5186 | arg = "all"; | |
5187 | options->flags.override_submodule_config = 1; | |
5188 | handle_ignore_submodules_arg(options, arg); | |
5189 | return 0; | |
5190 | } | |
5191 | ||
2f81cf98 NTND |
5192 | static int diff_opt_line_prefix(const struct option *opt, |
5193 | const char *optarg, int unset) | |
5194 | { | |
5195 | struct diff_options *options = opt->value; | |
5196 | ||
5197 | BUG_ON_OPT_NEG(unset); | |
5198 | options->line_prefix = optarg; | |
5199 | options->line_prefix_length = strlen(options->line_prefix); | |
5200 | graph_setup_line_prefix(options); | |
5201 | return 0; | |
5202 | } | |
5203 | ||
11c659d8 NTND |
5204 | static int diff_opt_no_prefix(const struct option *opt, |
5205 | const char *optarg, int unset) | |
5206 | { | |
5207 | struct diff_options *options = opt->value; | |
5208 | ||
5209 | BUG_ON_OPT_NEG(unset); | |
5210 | BUG_ON_OPT_ARG(optarg); | |
5211 | options->a_prefix = ""; | |
5212 | options->b_prefix = ""; | |
5213 | return 0; | |
5214 | } | |
5215 | ||
af2f3680 NTND |
5216 | static enum parse_opt_result diff_opt_output(struct parse_opt_ctx_t *ctx, |
5217 | const struct option *opt, | |
5218 | const char *arg, int unset) | |
5219 | { | |
5220 | struct diff_options *options = opt->value; | |
5221 | char *path; | |
5222 | ||
5223 | BUG_ON_OPT_NEG(unset); | |
5224 | path = prefix_filename(ctx->prefix, arg); | |
5225 | options->file = xfopen(path, "w"); | |
5226 | options->close_file = 1; | |
5227 | if (options->use_color != GIT_COLOR_ALWAYS) | |
5228 | options->use_color = GIT_COLOR_NEVER; | |
5229 | free(path); | |
5230 | return 0; | |
5231 | } | |
5232 | ||
31fd640e NTND |
5233 | static int diff_opt_patience(const struct option *opt, |
5234 | const char *arg, int unset) | |
5235 | { | |
5236 | struct diff_options *options = opt->value; | |
5237 | int i; | |
5238 | ||
5239 | BUG_ON_OPT_NEG(unset); | |
5240 | BUG_ON_OPT_ARG(arg); | |
5241 | options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF); | |
5242 | /* | |
5243 | * Both --patience and --anchored use PATIENCE_DIFF | |
5244 | * internally, so remove any anchors previously | |
5245 | * specified. | |
5246 | */ | |
5247 | for (i = 0; i < options->anchors_nr; i++) | |
5248 | free(options->anchors[i]); | |
5249 | options->anchors_nr = 0; | |
5250 | return 0; | |
5251 | } | |
5252 | ||
296d4a94 MK |
5253 | static int diff_opt_ignore_regex(const struct option *opt, |
5254 | const char *arg, int unset) | |
5255 | { | |
5256 | struct diff_options *options = opt->value; | |
5257 | regex_t *regex; | |
5258 | ||
5259 | BUG_ON_OPT_NEG(unset); | |
5260 | regex = xmalloc(sizeof(*regex)); | |
5261 | if (regcomp(regex, arg, REG_EXTENDED | REG_NEWLINE)) | |
5262 | return error(_("invalid regex given to -I: '%s'"), arg); | |
5263 | ALLOC_GROW(options->ignore_regex, options->ignore_regex_nr + 1, | |
5264 | options->ignore_regex_alloc); | |
5265 | options->ignore_regex[options->ignore_regex_nr++] = regex; | |
5266 | return 0; | |
5267 | } | |
5268 | ||
a41cfb32 NTND |
5269 | static int diff_opt_pickaxe_regex(const struct option *opt, |
5270 | const char *arg, int unset) | |
5271 | { | |
5272 | struct diff_options *options = opt->value; | |
5273 | ||
5274 | BUG_ON_OPT_NEG(unset); | |
5275 | options->pickaxe = arg; | |
5276 | options->pickaxe_opts |= DIFF_PICKAXE_KIND_G; | |
5277 | return 0; | |
5278 | } | |
5279 | ||
5280 | static int diff_opt_pickaxe_string(const struct option *opt, | |
5281 | const char *arg, int unset) | |
5282 | { | |
5283 | struct diff_options *options = opt->value; | |
5284 | ||
5285 | BUG_ON_OPT_NEG(unset); | |
5286 | options->pickaxe = arg; | |
5287 | options->pickaxe_opts |= DIFF_PICKAXE_KIND_S; | |
5288 | return 0; | |
5289 | } | |
5290 | ||
0b1c5b59 NTND |
5291 | static int diff_opt_relative(const struct option *opt, |
5292 | const char *arg, int unset) | |
5293 | { | |
5294 | struct diff_options *options = opt->value; | |
5295 | ||
c28ded83 | 5296 | options->flags.relative_name = !unset; |
0b1c5b59 NTND |
5297 | if (arg) |
5298 | options->prefix = arg; | |
5299 | return 0; | |
5300 | } | |
5301 | ||
125dcea9 NTND |
5302 | static int diff_opt_submodule(const struct option *opt, |
5303 | const char *arg, int unset) | |
5304 | { | |
5305 | struct diff_options *options = opt->value; | |
5306 | ||
5307 | BUG_ON_OPT_NEG(unset); | |
5308 | if (!arg) | |
5309 | arg = "log"; | |
5310 | if (parse_submodule_params(options, arg)) | |
5311 | return error(_("failed to parse --submodule option parameter: '%s'"), | |
5312 | arg); | |
5313 | return 0; | |
5314 | } | |
5315 | ||
8ab76977 NTND |
5316 | static int diff_opt_textconv(const struct option *opt, |
5317 | const char *arg, int unset) | |
5318 | { | |
5319 | struct diff_options *options = opt->value; | |
5320 | ||
5321 | BUG_ON_OPT_ARG(arg); | |
5322 | if (unset) { | |
5323 | options->flags.allow_textconv = 0; | |
5324 | } else { | |
5325 | options->flags.allow_textconv = 1; | |
5326 | options->flags.textconv_set_via_cmdline = 1; | |
5327 | } | |
5328 | return 0; | |
5329 | } | |
5330 | ||
d473e2e0 NTND |
5331 | static int diff_opt_unified(const struct option *opt, |
5332 | const char *arg, int unset) | |
5333 | { | |
5334 | struct diff_options *options = opt->value; | |
5335 | char *s; | |
5336 | ||
5337 | BUG_ON_OPT_NEG(unset); | |
5338 | ||
8ef05193 NTND |
5339 | if (arg) { |
5340 | options->context = strtol(arg, &s, 10); | |
5341 | if (*s) | |
5342 | return error(_("%s expects a numerical value"), "--unified"); | |
5343 | } | |
d473e2e0 NTND |
5344 | enable_patch_output(&options->output_format); |
5345 | ||
5346 | return 0; | |
5347 | } | |
5348 | ||
e9fb39b6 NTND |
5349 | static int diff_opt_word_diff(const struct option *opt, |
5350 | const char *arg, int unset) | |
5351 | { | |
5352 | struct diff_options *options = opt->value; | |
5353 | ||
5354 | BUG_ON_OPT_NEG(unset); | |
5355 | if (arg) { | |
5356 | if (!strcmp(arg, "plain")) | |
5357 | options->word_diff = DIFF_WORDS_PLAIN; | |
5358 | else if (!strcmp(arg, "color")) { | |
5359 | options->use_color = 1; | |
5360 | options->word_diff = DIFF_WORDS_COLOR; | |
5361 | } | |
5362 | else if (!strcmp(arg, "porcelain")) | |
5363 | options->word_diff = DIFF_WORDS_PORCELAIN; | |
5364 | else if (!strcmp(arg, "none")) | |
5365 | options->word_diff = DIFF_WORDS_NONE; | |
5366 | else | |
5367 | return error(_("bad --word-diff argument: %s"), arg); | |
5368 | } else { | |
5369 | if (options->word_diff == DIFF_WORDS_NONE) | |
5370 | options->word_diff = DIFF_WORDS_PLAIN; | |
5371 | } | |
5372 | return 0; | |
5373 | } | |
5374 | ||
797df119 NTND |
5375 | static int diff_opt_word_diff_regex(const struct option *opt, |
5376 | const char *arg, int unset) | |
5377 | { | |
5378 | struct diff_options *options = opt->value; | |
5379 | ||
5380 | BUG_ON_OPT_NEG(unset); | |
5381 | if (options->word_diff == DIFF_WORDS_NONE) | |
5382 | options->word_diff = DIFF_WORDS_PLAIN; | |
5383 | options->word_regex = arg; | |
5384 | return 0; | |
5385 | } | |
5386 | ||
1eb4136a JH |
5387 | static int diff_opt_rotate_to(const struct option *opt, const char *arg, int unset) |
5388 | { | |
5389 | struct diff_options *options = opt->value; | |
5390 | ||
5391 | BUG_ON_OPT_NEG(unset); | |
5392 | if (!strcmp(opt->long_name, "skip-to")) | |
5393 | options->skip_instead_of_rotate = 1; | |
5394 | else | |
5395 | options->skip_instead_of_rotate = 0; | |
5396 | options->rotate_to = arg; | |
5397 | return 0; | |
5398 | } | |
5399 | ||
c5630c48 RS |
5400 | struct option *add_diff_options(const struct option *opts, |
5401 | struct diff_options *options) | |
5402 | { | |
5403 | return parse_options_concat(opts, options->parseopts); | |
5404 | } | |
5405 | ||
4a288478 NTND |
5406 | static void prep_parse_options(struct diff_options *options) |
5407 | { | |
5408 | struct option parseopts[] = { | |
cc013c22 NTND |
5409 | OPT_GROUP(N_("Diff output format options")), |
5410 | OPT_BITOP('p', "patch", &options->output_format, | |
5411 | N_("generate patch"), | |
5412 | DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT), | |
e01df7a3 NTND |
5413 | OPT_BIT_F('s', "no-patch", &options->output_format, |
5414 | N_("suppress diff output"), | |
5415 | DIFF_FORMAT_NO_OUTPUT, PARSE_OPT_NONEG), | |
cc013c22 NTND |
5416 | OPT_BITOP('u', NULL, &options->output_format, |
5417 | N_("generate patch"), | |
5418 | DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT), | |
d473e2e0 NTND |
5419 | OPT_CALLBACK_F('U', "unified", options, N_("<n>"), |
5420 | N_("generate diffs with <n> lines context"), | |
8ef05193 | 5421 | PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_unified), |
7fd9a1ba NTND |
5422 | OPT_BOOL('W', "function-context", &options->flags.funccontext, |
5423 | N_("generate diffs with <n> lines context")), | |
ed881486 NTND |
5424 | OPT_BIT_F(0, "raw", &options->output_format, |
5425 | N_("generate the diff in raw format"), | |
5426 | DIFF_FORMAT_RAW, PARSE_OPT_NONEG), | |
c659f303 NTND |
5427 | OPT_BITOP(0, "patch-with-raw", &options->output_format, |
5428 | N_("synonym for '-p --raw'"), | |
5429 | DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW, | |
5430 | DIFF_FORMAT_NO_OUTPUT), | |
e550f585 NTND |
5431 | OPT_BITOP(0, "patch-with-stat", &options->output_format, |
5432 | N_("synonym for '-p --stat'"), | |
5433 | DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT, | |
5434 | DIFF_FORMAT_NO_OUTPUT), | |
e5673620 NTND |
5435 | OPT_BIT_F(0, "numstat", &options->output_format, |
5436 | N_("machine friendly --stat"), | |
5437 | DIFF_FORMAT_NUMSTAT, PARSE_OPT_NONEG), | |
5438 | OPT_BIT_F(0, "shortstat", &options->output_format, | |
5439 | N_("output only the last line of --stat"), | |
5440 | DIFF_FORMAT_SHORTSTAT, PARSE_OPT_NONEG), | |
4ce7aab5 NTND |
5441 | OPT_CALLBACK_F('X', "dirstat", options, N_("<param1,param2>..."), |
5442 | N_("output the distribution of relative amount of changes for each sub-directory"), | |
5443 | PARSE_OPT_NONEG | PARSE_OPT_OPTARG, | |
5444 | diff_opt_dirstat), | |
5445 | OPT_CALLBACK_F(0, "cumulative", options, NULL, | |
5446 | N_("synonym for --dirstat=cumulative"), | |
5447 | PARSE_OPT_NONEG | PARSE_OPT_NOARG, | |
5448 | diff_opt_dirstat), | |
5449 | OPT_CALLBACK_F(0, "dirstat-by-file", options, N_("<param1,param2>..."), | |
5450 | N_("synonym for --dirstat=files,param1,param2..."), | |
5451 | PARSE_OPT_NONEG | PARSE_OPT_OPTARG, | |
5452 | diff_opt_dirstat), | |
fc6af3e9 NTND |
5453 | OPT_BIT_F(0, "check", &options->output_format, |
5454 | N_("warn if changes introduce conflict markers or whitespace errors"), | |
5455 | DIFF_FORMAT_CHECKDIFF, PARSE_OPT_NONEG), | |
70a30417 NTND |
5456 | OPT_BIT_F(0, "summary", &options->output_format, |
5457 | N_("condensed summary such as creations, renames and mode changes"), | |
5458 | DIFF_FORMAT_SUMMARY, PARSE_OPT_NONEG), | |
0e840e2a NTND |
5459 | OPT_BIT_F(0, "name-only", &options->output_format, |
5460 | N_("show only names of changed files"), | |
5461 | DIFF_FORMAT_NAME, PARSE_OPT_NONEG), | |
a2387472 NTND |
5462 | OPT_BIT_F(0, "name-status", &options->output_format, |
5463 | N_("show only names and status of changed files"), | |
5464 | DIFF_FORMAT_NAME_STATUS, PARSE_OPT_NONEG), | |
84b5089e NTND |
5465 | OPT_CALLBACK_F(0, "stat", options, N_("<width>[,<name-width>[,<count>]]"), |
5466 | N_("generate diffstat"), | |
5467 | PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_stat), | |
5468 | OPT_CALLBACK_F(0, "stat-width", options, N_("<width>"), | |
5469 | N_("generate diffstat with a given width"), | |
5470 | PARSE_OPT_NONEG, diff_opt_stat), | |
5471 | OPT_CALLBACK_F(0, "stat-name-width", options, N_("<width>"), | |
5472 | N_("generate diffstat with a given name width"), | |
5473 | PARSE_OPT_NONEG, diff_opt_stat), | |
5474 | OPT_CALLBACK_F(0, "stat-graph-width", options, N_("<width>"), | |
5475 | N_("generate diffstat with a given graph width"), | |
5476 | PARSE_OPT_NONEG, diff_opt_stat), | |
5477 | OPT_CALLBACK_F(0, "stat-count", options, N_("<count>"), | |
5478 | N_("generate diffstat with limited lines"), | |
5479 | PARSE_OPT_NONEG, diff_opt_stat), | |
7d7942b7 NTND |
5480 | OPT_CALLBACK_F(0, "compact-summary", options, NULL, |
5481 | N_("generate compact summary in diffstat"), | |
5482 | PARSE_OPT_NOARG, diff_opt_compact_summary), | |
6d9af6f4 NTND |
5483 | OPT_CALLBACK_F(0, "binary", options, NULL, |
5484 | N_("output a binary diff that can be applied"), | |
5485 | PARSE_OPT_NONEG | PARSE_OPT_NOARG, diff_opt_binary), | |
4fe01672 NTND |
5486 | OPT_BOOL(0, "full-index", &options->flags.full_index, |
5487 | N_("show full pre- and post-image object names on the \"index\" lines")), | |
8b81c26e NTND |
5488 | OPT_COLOR_FLAG(0, "color", &options->use_color, |
5489 | N_("show colored diff")), | |
5a749d9f NTND |
5490 | OPT_CALLBACK_F(0, "ws-error-highlight", options, N_("<kind>"), |
5491 | N_("highlight whitespace errors in the 'context', 'old' or 'new' lines in the diff"), | |
5492 | PARSE_OPT_NONEG, diff_opt_ws_error_highlight), | |
1a1eb164 NTND |
5493 | OPT_SET_INT('z', NULL, &options->line_termination, |
5494 | N_("do not munge pathnames and use NULs as output field terminators in --raw or --numstat"), | |
5495 | 0), | |
d8774183 | 5496 | OPT__ABBREV(&options->abbrev), |
31fba9d3 NTND |
5497 | OPT_STRING_F(0, "src-prefix", &options->a_prefix, N_("<prefix>"), |
5498 | N_("show the given source prefix instead of \"a/\""), | |
5499 | PARSE_OPT_NONEG), | |
5500 | OPT_STRING_F(0, "dst-prefix", &options->b_prefix, N_("<prefix>"), | |
8a1569d6 | 5501 | N_("show the given destination prefix instead of \"b/\""), |
31fba9d3 | 5502 | PARSE_OPT_NONEG), |
2f81cf98 NTND |
5503 | OPT_CALLBACK_F(0, "line-prefix", options, N_("<prefix>"), |
5504 | N_("prepend an additional prefix to every line of output"), | |
5505 | PARSE_OPT_NONEG, diff_opt_line_prefix), | |
11c659d8 NTND |
5506 | OPT_CALLBACK_F(0, "no-prefix", options, NULL, |
5507 | N_("do not show any source or destination prefix"), | |
5508 | PARSE_OPT_NONEG | PARSE_OPT_NOARG, diff_opt_no_prefix), | |
16ed6c97 NTND |
5509 | OPT_INTEGER_F(0, "inter-hunk-context", &options->interhunkcontext, |
5510 | N_("show context between diff hunks up to the specified number of lines"), | |
5511 | PARSE_OPT_NONEG), | |
af2f3680 NTND |
5512 | OPT_CALLBACK_F(0, "output-indicator-new", |
5513 | &options->output_indicators[OUTPUT_INDICATOR_NEW], | |
5514 | N_("<char>"), | |
5515 | N_("specify the character to indicate a new line instead of '+'"), | |
5516 | PARSE_OPT_NONEG, diff_opt_char), | |
5517 | OPT_CALLBACK_F(0, "output-indicator-old", | |
5518 | &options->output_indicators[OUTPUT_INDICATOR_OLD], | |
5519 | N_("<char>"), | |
5520 | N_("specify the character to indicate an old line instead of '-'"), | |
5521 | PARSE_OPT_NONEG, diff_opt_char), | |
5522 | OPT_CALLBACK_F(0, "output-indicator-context", | |
5523 | &options->output_indicators[OUTPUT_INDICATOR_CONTEXT], | |
5524 | N_("<char>"), | |
5525 | N_("specify the character to indicate a context instead of ' '"), | |
5526 | PARSE_OPT_NONEG, diff_opt_char), | |
5527 | ||
ced4e179 NTND |
5528 | OPT_GROUP(N_("Diff rename options")), |
5529 | OPT_CALLBACK_F('B', "break-rewrites", &options->break_opt, N_("<n>[/<m>]"), | |
5530 | N_("break complete rewrite changes into pairs of delete and create"), | |
5531 | PARSE_OPT_NONEG | PARSE_OPT_OPTARG, | |
5532 | diff_opt_break_rewrites), | |
f476308b NTND |
5533 | OPT_CALLBACK_F('M', "find-renames", options, N_("<n>"), |
5534 | N_("detect renames"), | |
5535 | PARSE_OPT_NONEG | PARSE_OPT_OPTARG, | |
5536 | diff_opt_find_renames), | |
1e533296 NTND |
5537 | OPT_SET_INT_F('D', "irreversible-delete", &options->irreversible_delete, |
5538 | N_("omit the preimage for deletes"), | |
5539 | 1, PARSE_OPT_NONEG), | |
7f64850d NTND |
5540 | OPT_CALLBACK_F('C', "find-copies", options, N_("<n>"), |
5541 | N_("detect copies"), | |
5542 | PARSE_OPT_NONEG | PARSE_OPT_OPTARG, | |
5543 | diff_opt_find_copies), | |
bdd4741b NTND |
5544 | OPT_BOOL(0, "find-copies-harder", &options->flags.find_copies_harder, |
5545 | N_("use unmodified files as source to find copies")), | |
cdc43eb0 NTND |
5546 | OPT_SET_INT_F(0, "no-renames", &options->detect_rename, |
5547 | N_("disable rename detection"), | |
5548 | 0, PARSE_OPT_NONEG), | |
5549 | OPT_BOOL(0, "rename-empty", &options->flags.rename_empty, | |
5550 | N_("use empty blobs as rename source")), | |
1e9250b5 NTND |
5551 | OPT_CALLBACK_F(0, "follow", options, NULL, |
5552 | N_("continue listing the history of a file beyond renames"), | |
5553 | PARSE_OPT_NOARG, diff_opt_follow), | |
bffee749 NTND |
5554 | OPT_INTEGER('l', NULL, &options->rename_limit, |
5555 | N_("prevent rename/copy detection if the number of rename/copy targets exceeds given limit")), | |
ced4e179 | 5556 | |
2e75f922 NTND |
5557 | OPT_GROUP(N_("Diff algorithm options")), |
5558 | OPT_BIT(0, "minimal", &options->xdl_opts, | |
5559 | N_("produce the smallest possible diff"), | |
5560 | XDF_NEED_MINIMAL), | |
87649a16 NTND |
5561 | OPT_BIT_F('w', "ignore-all-space", &options->xdl_opts, |
5562 | N_("ignore whitespace when comparing lines"), | |
5563 | XDF_IGNORE_WHITESPACE, PARSE_OPT_NONEG), | |
5564 | OPT_BIT_F('b', "ignore-space-change", &options->xdl_opts, | |
5565 | N_("ignore changes in amount of whitespace"), | |
5566 | XDF_IGNORE_WHITESPACE_CHANGE, PARSE_OPT_NONEG), | |
5567 | OPT_BIT_F(0, "ignore-space-at-eol", &options->xdl_opts, | |
5568 | N_("ignore changes in whitespace at EOL"), | |
5569 | XDF_IGNORE_WHITESPACE_AT_EOL, PARSE_OPT_NONEG), | |
5570 | OPT_BIT_F(0, "ignore-cr-at-eol", &options->xdl_opts, | |
5571 | N_("ignore carrier-return at the end of line"), | |
5572 | XDF_IGNORE_CR_AT_EOL, PARSE_OPT_NONEG), | |
5573 | OPT_BIT_F(0, "ignore-blank-lines", &options->xdl_opts, | |
5574 | N_("ignore changes whose lines are all blank"), | |
5575 | XDF_IGNORE_BLANK_LINES, PARSE_OPT_NONEG), | |
296d4a94 MK |
5576 | OPT_CALLBACK_F('I', "ignore-matching-lines", options, N_("<regex>"), |
5577 | N_("ignore changes whose all lines match <regex>"), | |
5578 | 0, diff_opt_ignore_regex), | |
06f77518 NTND |
5579 | OPT_BIT(0, "indent-heuristic", &options->xdl_opts, |
5580 | N_("heuristic to shift diff hunk boundaries for easy reading"), | |
5581 | XDF_INDENT_HEURISTIC), | |
31fd640e NTND |
5582 | OPT_CALLBACK_F(0, "patience", options, NULL, |
5583 | N_("generate diff using the \"patience diff\" algorithm"), | |
5584 | PARSE_OPT_NONEG | PARSE_OPT_NOARG, | |
5585 | diff_opt_patience), | |
f1e68ef5 NTND |
5586 | OPT_BITOP(0, "histogram", &options->xdl_opts, |
5587 | N_("generate diff using the \"histogram diff\" algorithm"), | |
5588 | XDF_HISTOGRAM_DIFF, XDF_DIFF_ALGORITHM_MASK), | |
10f35b1c NTND |
5589 | OPT_CALLBACK_F(0, "diff-algorithm", options, N_("<algorithm>"), |
5590 | N_("choose a diff algorithm"), | |
5591 | PARSE_OPT_NONEG, diff_opt_diff_algorithm), | |
df84a436 NTND |
5592 | OPT_CALLBACK_F(0, "anchored", options, N_("<text>"), |
5593 | N_("generate diff using the \"anchored diff\" algorithm"), | |
5594 | PARSE_OPT_NONEG, diff_opt_anchored), | |
e9fb39b6 NTND |
5595 | OPT_CALLBACK_F(0, "word-diff", options, N_("<mode>"), |
5596 | N_("show word diff, using <mode> to delimit changed words"), | |
5597 | PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_word_diff), | |
797df119 NTND |
5598 | OPT_CALLBACK_F(0, "word-diff-regex", options, N_("<regex>"), |
5599 | N_("use <regex> to decide what a word is"), | |
5600 | PARSE_OPT_NONEG, diff_opt_word_diff_regex), | |
212db69d NTND |
5601 | OPT_CALLBACK_F(0, "color-words", options, N_("<regex>"), |
5602 | N_("equivalent to --word-diff=color --word-diff-regex=<regex>"), | |
5603 | PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_color_words), | |
59311a98 | 5604 | OPT_CALLBACK_F(0, "color-moved", options, N_("<mode>"), |
8bcd8f4c | 5605 | N_("moved lines of code are colored differently"), |
59311a98 | 5606 | PARSE_OPT_OPTARG, diff_opt_color_moved), |
8ce2020f NTND |
5607 | OPT_CALLBACK_F(0, "color-moved-ws", options, N_("<mode>"), |
5608 | N_("how white spaces are ignored in --color-moved"), | |
bb987290 | 5609 | 0, diff_opt_color_moved_ws), |
2e75f922 | 5610 | |
8bcd8f4c | 5611 | OPT_GROUP(N_("Other diff options")), |
0b1c5b59 NTND |
5612 | OPT_CALLBACK_F(0, "relative", options, N_("<prefix>"), |
5613 | N_("when run from subdir, exclude changes outside and show relative paths"), | |
c28ded83 | 5614 | PARSE_OPT_OPTARG, |
0b1c5b59 | 5615 | diff_opt_relative), |
c37d4c0a NTND |
5616 | OPT_BOOL('a', "text", &options->flags.text, |
5617 | N_("treat all files as text")), | |
4f99f299 NTND |
5618 | OPT_BOOL('R', NULL, &options->flags.reverse_diff, |
5619 | N_("swap two inputs, reverse the diff")), | |
1086ea0c NTND |
5620 | OPT_BOOL(0, "exit-code", &options->flags.exit_with_status, |
5621 | N_("exit with 1 if there were differences, 0 otherwise")), | |
9bbaf1ce NTND |
5622 | OPT_BOOL(0, "quiet", &options->flags.quick, |
5623 | N_("disable all output of the program")), | |
0cda1003 NTND |
5624 | OPT_BOOL(0, "ext-diff", &options->flags.allow_external, |
5625 | N_("allow an external diff helper to be executed")), | |
8ab76977 NTND |
5626 | OPT_CALLBACK_F(0, "textconv", options, NULL, |
5627 | N_("run external text conversion filters when comparing binary files"), | |
5628 | PARSE_OPT_NOARG, diff_opt_textconv), | |
b680ee14 NTND |
5629 | OPT_CALLBACK_F(0, "ignore-submodules", options, N_("<when>"), |
5630 | N_("ignore changes to submodules in the diff generation"), | |
5631 | PARSE_OPT_NONEG | PARSE_OPT_OPTARG, | |
5632 | diff_opt_ignore_submodules), | |
125dcea9 NTND |
5633 | OPT_CALLBACK_F(0, "submodule", options, N_("<format>"), |
5634 | N_("specify how differences in submodules are shown"), | |
5635 | PARSE_OPT_NONEG | PARSE_OPT_OPTARG, | |
5636 | diff_opt_submodule), | |
96860e48 NTND |
5637 | OPT_SET_INT_F(0, "ita-invisible-in-index", &options->ita_invisible_in_index, |
5638 | N_("hide 'git add -N' entries from the index"), | |
5639 | 1, PARSE_OPT_NONEG), | |
5640 | OPT_SET_INT_F(0, "ita-visible-in-index", &options->ita_invisible_in_index, | |
5641 | N_("treat 'git add -N' entries as real in the index"), | |
5642 | 0, PARSE_OPT_NONEG), | |
a41cfb32 NTND |
5643 | OPT_CALLBACK_F('S', NULL, options, N_("<string>"), |
5644 | N_("look for differences that change the number of occurrences of the specified string"), | |
5645 | 0, diff_opt_pickaxe_string), | |
5646 | OPT_CALLBACK_F('G', NULL, options, N_("<regex>"), | |
5647 | N_("look for differences that change the number of occurrences of the specified regex"), | |
5648 | 0, diff_opt_pickaxe_regex), | |
85f8e889 NTND |
5649 | OPT_BIT_F(0, "pickaxe-all", &options->pickaxe_opts, |
5650 | N_("show all changes in the changeset with -S or -G"), | |
5651 | DIFF_PICKAXE_ALL, PARSE_OPT_NONEG), | |
5652 | OPT_BIT_F(0, "pickaxe-regex", &options->pickaxe_opts, | |
5653 | N_("treat <string> in -S as extended POSIX regular expression"), | |
5654 | DIFF_PICKAXE_REGEX, PARSE_OPT_NONEG), | |
f731814b NTND |
5655 | OPT_FILENAME('O', NULL, &options->orderfile, |
5656 | N_("control the order in which files appear in the output")), | |
1eb4136a JH |
5657 | OPT_CALLBACK_F(0, "rotate-to", options, N_("<path>"), |
5658 | N_("show the change in the specified path first"), | |
5659 | PARSE_OPT_NONEG, diff_opt_rotate_to), | |
5660 | OPT_CALLBACK_F(0, "skip-to", options, N_("<path>"), | |
5661 | N_("skip the output to the specified path"), | |
5662 | PARSE_OPT_NONEG, diff_opt_rotate_to), | |
a75f28cb NTND |
5663 | OPT_CALLBACK_F(0, "find-object", options, N_("<object-id>"), |
5664 | N_("look for differences that change the number of occurrences of the specified object"), | |
5665 | PARSE_OPT_NONEG, diff_opt_find_object), | |
d2d3f273 NTND |
5666 | OPT_CALLBACK_F(0, "diff-filter", options, N_("[(A|C|D|M|R|T|U|X|B)...[*]]"), |
5667 | N_("select files by diff type"), | |
5668 | PARSE_OPT_NONEG, diff_opt_diff_filter), | |
af2f3680 | 5669 | { OPTION_CALLBACK, 0, "output", options, N_("<file>"), |
9e1f22c8 | 5670 | N_("output to a specific file"), |
af2f3680 NTND |
5671 | PARSE_OPT_NONEG, NULL, 0, diff_opt_output }, |
5672 | ||
4a288478 NTND |
5673 | OPT_END() |
5674 | }; | |
5675 | ||
5676 | ALLOC_ARRAY(options->parseopts, ARRAY_SIZE(parseopts)); | |
5677 | memcpy(options->parseopts, parseopts, sizeof(parseopts)); | |
5678 | } | |
5679 | ||
a97262c6 NTND |
5680 | int diff_opt_parse(struct diff_options *options, |
5681 | const char **av, int ac, const char *prefix) | |
6973dcae | 5682 | { |
a97262c6 NTND |
5683 | if (!prefix) |
5684 | prefix = ""; | |
5685 | ||
4a288478 NTND |
5686 | ac = parse_options(ac, av, prefix, options->parseopts, NULL, |
5687 | PARSE_OPT_KEEP_DASHDASH | | |
99d86d60 | 5688 | PARSE_OPT_KEEP_UNKNOWN_OPT | |
4a288478 NTND |
5689 | PARSE_OPT_NO_INTERNAL_HELP | |
5690 | PARSE_OPT_ONE_SHOT | | |
5691 | PARSE_OPT_STOP_AT_NON_OPTION); | |
5692 | ||
8ce2020f | 5693 | return ac; |
6973dcae JH |
5694 | } |
5695 | ||
10ae7526 | 5696 | int parse_rename_score(const char **cp_p) |
6973dcae JH |
5697 | { |
5698 | unsigned long num, scale; | |
5699 | int ch, dot; | |
5700 | const char *cp = *cp_p; | |
5701 | ||
5702 | num = 0; | |
5703 | scale = 1; | |
5704 | dot = 0; | |
eeefa7c9 | 5705 | for (;;) { |
6973dcae JH |
5706 | ch = *cp; |
5707 | if ( !dot && ch == '.' ) { | |
5708 | scale = 1; | |
5709 | dot = 1; | |
5710 | } else if ( ch == '%' ) { | |
5711 | scale = dot ? scale*100 : 100; | |
5712 | cp++; /* % is always at the end */ | |
5713 | break; | |
5714 | } else if ( ch >= '0' && ch <= '9' ) { | |
5715 | if ( scale < 100000 ) { | |
5716 | scale *= 10; | |
5717 | num = (num*10) + (ch-'0'); | |
5718 | } | |
5719 | } else { | |
5720 | break; | |
5721 | } | |
5722 | cp++; | |
5723 | } | |
5724 | *cp_p = cp; | |
5725 | ||
5726 | /* user says num divided by scale and we say internally that | |
5727 | * is MAX_SCORE * num / scale. | |
5728 | */ | |
dc49cd76 | 5729 | return (int)((num >= scale) ? MAX_SCORE : (MAX_SCORE * num / scale)); |
6973dcae JH |
5730 | } |
5731 | ||
6973dcae JH |
5732 | struct diff_queue_struct diff_queued_diff; |
5733 | ||
5734 | void diff_q(struct diff_queue_struct *queue, struct diff_filepair *dp) | |
5735 | { | |
4c960a43 | 5736 | ALLOC_GROW(queue->queue, queue->nr + 1, queue->alloc); |
6973dcae JH |
5737 | queue->queue[queue->nr++] = dp; |
5738 | } | |
5739 | ||
5740 | struct diff_filepair *diff_queue(struct diff_queue_struct *queue, | |
5741 | struct diff_filespec *one, | |
5742 | struct diff_filespec *two) | |
5743 | { | |
ef677686 | 5744 | struct diff_filepair *dp = xcalloc(1, sizeof(*dp)); |
6973dcae JH |
5745 | dp->one = one; |
5746 | dp->two = two; | |
6973dcae JH |
5747 | if (queue) |
5748 | diff_q(queue, dp); | |
5749 | return dp; | |
5750 | } | |
5751 | ||
5752 | void diff_free_filepair(struct diff_filepair *p) | |
5753 | { | |
9fb88419 LT |
5754 | free_filespec(p->one); |
5755 | free_filespec(p->two); | |
6973dcae JH |
5756 | free(p); |
5757 | } | |
5758 | ||
d6cece51 | 5759 | const char *diff_aligned_abbrev(const struct object_id *oid, int len) |
6973dcae JH |
5760 | { |
5761 | int abblen; | |
5762 | const char *abbrev; | |
6973dcae | 5763 | |
7cb6ac1e | 5764 | /* Do we want all 40 hex characters? */ |
02afca1e | 5765 | if (len == the_hash_algo->hexsz) |
d6cece51 JK |
5766 | return oid_to_hex(oid); |
5767 | ||
7cb6ac1e | 5768 | /* An abbreviated value is fine, possibly followed by an ellipsis. */ |
4f03666a | 5769 | abbrev = diff_abbrev_oid(oid, len); |
7cb6ac1e AR |
5770 | |
5771 | if (!print_sha1_ellipsis()) | |
5772 | return abbrev; | |
5773 | ||
6973dcae | 5774 | abblen = strlen(abbrev); |
d709f1fb JH |
5775 | |
5776 | /* | |
7cb6ac1e | 5777 | * In well-behaved cases, where the abbreviated result is the |
d709f1fb JH |
5778 | * same as the requested length, append three dots after the |
5779 | * abbreviation (hence the whole logic is limited to the case | |
5780 | * where abblen < 37); when the actual abbreviated result is a | |
5781 | * bit longer than the requested length, we reduce the number | |
5782 | * of dots so that they match the well-behaved ones. However, | |
5783 | * if the actual abbreviation is longer than the requested | |
5784 | * length by more than three, we give up on aligning, and add | |
5785 | * three dots anyway, to indicate that the output is not the | |
5786 | * full object name. Yes, this may be suboptimal, but this | |
5787 | * appears only in "diff --raw --abbrev" output and it is not | |
5788 | * worth the effort to change it now. Note that this would | |
5789 | * likely to work fine when the automatic sizing of default | |
5790 | * abbreviation length is used--we would be fed -1 in "len" in | |
5791 | * that case, and will end up always appending three-dots, but | |
5792 | * the automatic sizing is supposed to give abblen that ensures | |
5793 | * uniqueness across all objects (statistically speaking). | |
5794 | */ | |
02afca1e | 5795 | if (abblen < the_hash_algo->hexsz - 3) { |
dc01505f | 5796 | static char hex[GIT_MAX_HEXSZ + 1]; |
6973dcae | 5797 | if (len < abblen && abblen <= len + 2) |
5096d490 | 5798 | xsnprintf(hex, sizeof(hex), "%s%.*s", abbrev, len+3-abblen, ".."); |
6973dcae | 5799 | else |
5096d490 | 5800 | xsnprintf(hex, sizeof(hex), "%s...", abbrev); |
6973dcae JH |
5801 | return hex; |
5802 | } | |
d6cece51 JK |
5803 | |
5804 | return oid_to_hex(oid); | |
6973dcae JH |
5805 | } |
5806 | ||
663af342 | 5807 | static void diff_flush_raw(struct diff_filepair *p, struct diff_options *opt) |
6973dcae | 5808 | { |
663af342 PH |
5809 | int line_termination = opt->line_termination; |
5810 | int inter_name_termination = line_termination ? '\t' : '\0'; | |
6973dcae | 5811 | |
30997bb8 | 5812 | fprintf(opt->file, "%s", diff_line_prefix(opt)); |
663af342 | 5813 | if (!(opt->output_format & DIFF_FORMAT_NAME_STATUS)) { |
c0c77734 | 5814 | fprintf(opt->file, ":%06o %06o %s ", p->one->mode, p->two->mode, |
d6cece51 | 5815 | diff_aligned_abbrev(&p->one->oid, opt->abbrev)); |
a0d12c44 | 5816 | fprintf(opt->file, "%s ", |
d6cece51 | 5817 | diff_aligned_abbrev(&p->two->oid, opt->abbrev)); |
6973dcae | 5818 | } |
663af342 | 5819 | if (p->score) { |
c0c77734 DB |
5820 | fprintf(opt->file, "%c%03d%c", p->status, similarity_index(p), |
5821 | inter_name_termination); | |
663af342 | 5822 | } else { |
c0c77734 | 5823 | fprintf(opt->file, "%c%c", p->status, inter_name_termination); |
6973dcae | 5824 | } |
6973dcae | 5825 | |
cd676a51 JH |
5826 | if (p->status == DIFF_STATUS_COPIED || |
5827 | p->status == DIFF_STATUS_RENAMED) { | |
5828 | const char *name_a, *name_b; | |
5829 | name_a = p->one->path; | |
5830 | name_b = p->two->path; | |
5831 | strip_prefix(opt->prefix_length, &name_a, &name_b); | |
c0c77734 DB |
5832 | write_name_quoted(name_a, opt->file, inter_name_termination); |
5833 | write_name_quoted(name_b, opt->file, line_termination); | |
663af342 | 5834 | } else { |
cd676a51 JH |
5835 | const char *name_a, *name_b; |
5836 | name_a = p->one->mode ? p->one->path : p->two->path; | |
5837 | name_b = NULL; | |
5838 | strip_prefix(opt->prefix_length, &name_a, &name_b); | |
c0c77734 | 5839 | write_name_quoted(name_a, opt->file, line_termination); |
663af342 | 5840 | } |
6973dcae JH |
5841 | } |
5842 | ||
5843 | int diff_unmodified_pair(struct diff_filepair *p) | |
5844 | { | |
5845 | /* This function is written stricter than necessary to support | |
5846 | * the currently implemented transformers, but the idea is to | |
5847 | * let transformers to produce diff_filepairs any way they want, | |
5848 | * and filter and clean them up here before producing the output. | |
5849 | */ | |
663af342 | 5850 | struct diff_filespec *one = p->one, *two = p->two; |
6973dcae JH |
5851 | |
5852 | if (DIFF_PAIR_UNMERGED(p)) | |
5853 | return 0; /* unmerged is interesting */ | |
5854 | ||
6973dcae JH |
5855 | /* deletion, addition, mode or type change |
5856 | * and rename are all interesting. | |
5857 | */ | |
5858 | if (DIFF_FILE_VALID(one) != DIFF_FILE_VALID(two) || | |
5859 | DIFF_PAIR_MODE_CHANGED(p) || | |
5860 | strcmp(one->path, two->path)) | |
5861 | return 0; | |
5862 | ||
5863 | /* both are valid and point at the same path. that is, we are | |
5864 | * dealing with a change. | |
5865 | */ | |
41c9560e | 5866 | if (one->oid_valid && two->oid_valid && |
4a7e27e9 | 5867 | oideq(&one->oid, &two->oid) && |
85adbf2f | 5868 | !one->dirty_submodule && !two->dirty_submodule) |
6973dcae | 5869 | return 1; /* no change */ |
41c9560e | 5870 | if (!one->oid_valid && !two->oid_valid) |
6973dcae JH |
5871 | return 1; /* both look at the same file on the filesystem. */ |
5872 | return 0; | |
5873 | } | |
5874 | ||
5875 | static void diff_flush_patch(struct diff_filepair *p, struct diff_options *o) | |
5876 | { | |
95433eee EN |
5877 | int include_conflict_headers = |
5878 | (additional_headers(o, p->one->path) && | |
71a146dc | 5879 | !o->pickaxe_opts && |
95433eee EN |
5880 | (!o->filter || filter_bit_tst(DIFF_STATUS_UNMERGED, o))); |
5881 | ||
5882 | /* | |
5883 | * Check if we can return early without showing a diff. Note that | |
5884 | * diff_filepair only stores {oid, path, mode, is_valid} | |
5885 | * information for each path, and thus diff_unmodified_pair() only | |
5886 | * considers those bits of info. However, we do not want pairs | |
5887 | * created by create_filepairs_for_header_only_notifications() | |
5888 | * (which always look like unmodified pairs) to be ignored, so | |
5889 | * return early if both p is unmodified AND we don't want to | |
5890 | * include_conflict_headers. | |
5891 | */ | |
5892 | if (diff_unmodified_pair(p) && !include_conflict_headers) | |
6973dcae JH |
5893 | return; |
5894 | ||
95433eee | 5895 | /* Actually, we can also return early to avoid showing tree diffs */ |
6973dcae JH |
5896 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || |
5897 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
95433eee | 5898 | return; |
6973dcae JH |
5899 | |
5900 | run_diff(p, o); | |
5901 | } | |
5902 | ||
5903 | static void diff_flush_stat(struct diff_filepair *p, struct diff_options *o, | |
5904 | struct diffstat_t *diffstat) | |
5905 | { | |
5906 | if (diff_unmodified_pair(p)) | |
5907 | return; | |
5908 | ||
5909 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || | |
5910 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
c3fced64 | 5911 | return; /* no useful stat for tree diffs */ |
6973dcae JH |
5912 | |
5913 | run_diffstat(p, o, diffstat); | |
5914 | } | |
5915 | ||
88246898 JS |
5916 | static void diff_flush_checkdiff(struct diff_filepair *p, |
5917 | struct diff_options *o) | |
5918 | { | |
5919 | if (diff_unmodified_pair(p)) | |
5920 | return; | |
5921 | ||
5922 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || | |
5923 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
c3fced64 | 5924 | return; /* nothing to check in tree diffs */ |
88246898 JS |
5925 | |
5926 | run_checkdiff(p, o); | |
5927 | } | |
5928 | ||
95433eee | 5929 | int diff_queue_is_empty(struct diff_options *o) |
6973dcae JH |
5930 | { |
5931 | struct diff_queue_struct *q = &diff_queued_diff; | |
5932 | int i; | |
95433eee EN |
5933 | int include_conflict_headers = |
5934 | (o->additional_path_headers && | |
67360b75 | 5935 | strmap_get_size(o->additional_path_headers) && |
71a146dc | 5936 | !o->pickaxe_opts && |
95433eee EN |
5937 | (!o->filter || filter_bit_tst(DIFF_STATUS_UNMERGED, o))); |
5938 | ||
5939 | if (include_conflict_headers) | |
5940 | return 0; | |
5941 | ||
6973dcae JH |
5942 | for (i = 0; i < q->nr; i++) |
5943 | if (!diff_unmodified_pair(q->queue[i])) | |
5944 | return 0; | |
5945 | return 1; | |
5946 | } | |
5947 | ||
5948 | #if DIFF_DEBUG | |
5949 | void diff_debug_filespec(struct diff_filespec *s, int x, const char *one) | |
5950 | { | |
5951 | fprintf(stderr, "queue[%d] %s (%s) %s %06o %s\n", | |
5952 | x, one ? one : "", | |
5953 | s->path, | |
5954 | DIFF_FILE_VALID(s) ? "valid" : "invalid", | |
5955 | s->mode, | |
41c9560e | 5956 | s->oid_valid ? oid_to_hex(&s->oid) : ""); |
428d52a5 | 5957 | fprintf(stderr, "queue[%d] %s size %lu\n", |
6973dcae | 5958 | x, one ? one : "", |
428d52a5 | 5959 | s->size); |
6973dcae JH |
5960 | } |
5961 | ||
5962 | void diff_debug_filepair(const struct diff_filepair *p, int i) | |
5963 | { | |
5964 | diff_debug_filespec(p->one, i, "one"); | |
5965 | diff_debug_filespec(p->two, i, "two"); | |
64479711 | 5966 | fprintf(stderr, "score %d, status %c rename_used %d broken %d\n", |
6973dcae | 5967 | p->score, p->status ? p->status : '?', |
64479711 | 5968 | p->one->rename_used, p->broken_pair); |
6973dcae JH |
5969 | } |
5970 | ||
5971 | void diff_debug_queue(const char *msg, struct diff_queue_struct *q) | |
5972 | { | |
5973 | int i; | |
5974 | if (msg) | |
5975 | fprintf(stderr, "%s\n", msg); | |
5976 | fprintf(stderr, "q->nr = %d\n", q->nr); | |
5977 | for (i = 0; i < q->nr; i++) { | |
5978 | struct diff_filepair *p = q->queue[i]; | |
5979 | diff_debug_filepair(p, i); | |
5980 | } | |
5981 | } | |
5982 | #endif | |
5983 | ||
5984 | static void diff_resolve_rename_copy(void) | |
5985 | { | |
64479711 LT |
5986 | int i; |
5987 | struct diff_filepair *p; | |
6973dcae JH |
5988 | struct diff_queue_struct *q = &diff_queued_diff; |
5989 | ||
5990 | diff_debug_queue("resolve-rename-copy", q); | |
5991 | ||
5992 | for (i = 0; i < q->nr; i++) { | |
5993 | p = q->queue[i]; | |
5994 | p->status = 0; /* undecided */ | |
5995 | if (DIFF_PAIR_UNMERGED(p)) | |
5996 | p->status = DIFF_STATUS_UNMERGED; | |
5997 | else if (!DIFF_FILE_VALID(p->one)) | |
5998 | p->status = DIFF_STATUS_ADDED; | |
5999 | else if (!DIFF_FILE_VALID(p->two)) | |
6000 | p->status = DIFF_STATUS_DELETED; | |
6001 | else if (DIFF_PAIR_TYPE_CHANGED(p)) | |
6002 | p->status = DIFF_STATUS_TYPE_CHANGED; | |
6003 | ||
6004 | /* from this point on, we are dealing with a pair | |
6005 | * whose both sides are valid and of the same type, i.e. | |
6006 | * either in-place edit or rename/copy edit. | |
6007 | */ | |
6008 | else if (DIFF_PAIR_RENAME(p)) { | |
64479711 LT |
6009 | /* |
6010 | * A rename might have re-connected a broken | |
6011 | * pair up, causing the pathnames to be the | |
6012 | * same again. If so, that's not a rename at | |
6013 | * all, just a modification.. | |
6014 | * | |
6015 | * Otherwise, see if this source was used for | |
6016 | * multiple renames, in which case we decrement | |
6017 | * the count, and call it a copy. | |
6973dcae | 6018 | */ |
64479711 LT |
6019 | if (!strcmp(p->one->path, p->two->path)) |
6020 | p->status = DIFF_STATUS_MODIFIED; | |
6021 | else if (--p->one->rename_used > 0) | |
6973dcae | 6022 | p->status = DIFF_STATUS_COPIED; |
64479711 | 6023 | else |
6973dcae JH |
6024 | p->status = DIFF_STATUS_RENAMED; |
6025 | } | |
9001dc2a | 6026 | else if (!oideq(&p->one->oid, &p->two->oid) || |
d516c2d1 | 6027 | p->one->mode != p->two->mode || |
85adbf2f JL |
6028 | p->one->dirty_submodule || |
6029 | p->two->dirty_submodule || | |
a0d12c44 | 6030 | is_null_oid(&p->one->oid)) |
6973dcae JH |
6031 | p->status = DIFF_STATUS_MODIFIED; |
6032 | else { | |
6033 | /* This is a "no-change" entry and should not | |
6034 | * happen anymore, but prepare for broken callers. | |
6035 | */ | |
6036 | error("feeding unmodified %s to diffcore", | |
6037 | p->one->path); | |
6038 | p->status = DIFF_STATUS_UNKNOWN; | |
6039 | } | |
6040 | } | |
6041 | diff_debug_queue("resolve-rename-copy done", q); | |
6042 | } | |
6043 | ||
c6744349 | 6044 | static int check_pair_status(struct diff_filepair *p) |
6973dcae | 6045 | { |
6973dcae JH |
6046 | switch (p->status) { |
6047 | case DIFF_STATUS_UNKNOWN: | |
c6744349 | 6048 | return 0; |
6973dcae JH |
6049 | case 0: |
6050 | die("internal error in diff-resolve-rename-copy"); | |
6973dcae | 6051 | default: |
c6744349 | 6052 | return 1; |
6973dcae JH |
6053 | } |
6054 | } | |
6055 | ||
c6744349 TH |
6056 | static void flush_one_pair(struct diff_filepair *p, struct diff_options *opt) |
6057 | { | |
6058 | int fmt = opt->output_format; | |
6059 | ||
6060 | if (fmt & DIFF_FORMAT_CHECKDIFF) | |
6061 | diff_flush_checkdiff(p, opt); | |
6062 | else if (fmt & (DIFF_FORMAT_RAW | DIFF_FORMAT_NAME_STATUS)) | |
6063 | diff_flush_raw(p, opt); | |
cd676a51 JH |
6064 | else if (fmt & DIFF_FORMAT_NAME) { |
6065 | const char *name_a, *name_b; | |
6066 | name_a = p->two->path; | |
6067 | name_b = NULL; | |
6068 | strip_prefix(opt->prefix_length, &name_a, &name_b); | |
f5022b5f | 6069 | fprintf(opt->file, "%s", diff_line_prefix(opt)); |
c0c77734 | 6070 | write_name_quoted(name_a, opt->file, opt->line_termination); |
cd676a51 | 6071 | } |
c6744349 TH |
6072 | } |
6073 | ||
146fdb0d | 6074 | static void show_file_mode_name(struct diff_options *opt, const char *newdelete, struct diff_filespec *fs) |
4bbd261b | 6075 | { |
146fdb0d | 6076 | struct strbuf sb = STRBUF_INIT; |
4bbd261b | 6077 | if (fs->mode) |
146fdb0d | 6078 | strbuf_addf(&sb, " %s mode %06o ", newdelete, fs->mode); |
4bbd261b | 6079 | else |
146fdb0d | 6080 | strbuf_addf(&sb, " %s ", newdelete); |
4bbd261b | 6081 | |
146fdb0d SB |
6082 | quote_c_style(fs->path, &sb, NULL, 0); |
6083 | strbuf_addch(&sb, '\n'); | |
6084 | emit_diff_symbol(opt, DIFF_SYMBOL_SUMMARY, | |
6085 | sb.buf, sb.len, 0); | |
6086 | strbuf_release(&sb); | |
6087 | } | |
4bbd261b | 6088 | |
146fdb0d SB |
6089 | static void show_mode_change(struct diff_options *opt, struct diff_filepair *p, |
6090 | int show_name) | |
4bbd261b SE |
6091 | { |
6092 | if (p->one->mode && p->two->mode && p->one->mode != p->two->mode) { | |
146fdb0d SB |
6093 | struct strbuf sb = STRBUF_INIT; |
6094 | strbuf_addf(&sb, " mode change %06o => %06o", | |
6095 | p->one->mode, p->two->mode); | |
0d26a64e | 6096 | if (show_name) { |
146fdb0d SB |
6097 | strbuf_addch(&sb, ' '); |
6098 | quote_c_style(p->two->path, &sb, NULL, 0); | |
0d26a64e | 6099 | } |
58aaced4 | 6100 | strbuf_addch(&sb, '\n'); |
146fdb0d SB |
6101 | emit_diff_symbol(opt, DIFF_SYMBOL_SUMMARY, |
6102 | sb.buf, sb.len, 0); | |
6103 | strbuf_release(&sb); | |
4bbd261b SE |
6104 | } |
6105 | } | |
6106 | ||
146fdb0d SB |
6107 | static void show_rename_copy(struct diff_options *opt, const char *renamecopy, |
6108 | struct diff_filepair *p) | |
4bbd261b | 6109 | { |
146fdb0d | 6110 | struct strbuf sb = STRBUF_INIT; |
c905cbc4 NTND |
6111 | struct strbuf names = STRBUF_INIT; |
6112 | ||
6113 | pprint_rename(&names, p->one->path, p->two->path); | |
146fdb0d | 6114 | strbuf_addf(&sb, " %s %s (%d%%)\n", |
c905cbc4 NTND |
6115 | renamecopy, names.buf, similarity_index(p)); |
6116 | strbuf_release(&names); | |
146fdb0d SB |
6117 | emit_diff_symbol(opt, DIFF_SYMBOL_SUMMARY, |
6118 | sb.buf, sb.len, 0); | |
6119 | show_mode_change(opt, p, 0); | |
348eda24 | 6120 | strbuf_release(&sb); |
4bbd261b SE |
6121 | } |
6122 | ||
7be57610 | 6123 | static void diff_summary(struct diff_options *opt, struct diff_filepair *p) |
4bbd261b SE |
6124 | { |
6125 | switch(p->status) { | |
6126 | case DIFF_STATUS_DELETED: | |
146fdb0d | 6127 | show_file_mode_name(opt, "delete", p->one); |
4bbd261b SE |
6128 | break; |
6129 | case DIFF_STATUS_ADDED: | |
146fdb0d | 6130 | show_file_mode_name(opt, "create", p->two); |
4bbd261b SE |
6131 | break; |
6132 | case DIFF_STATUS_COPIED: | |
146fdb0d | 6133 | show_rename_copy(opt, "copy", p); |
4bbd261b SE |
6134 | break; |
6135 | case DIFF_STATUS_RENAMED: | |
146fdb0d | 6136 | show_rename_copy(opt, "rename", p); |
4bbd261b SE |
6137 | break; |
6138 | default: | |
6139 | if (p->score) { | |
146fdb0d SB |
6140 | struct strbuf sb = STRBUF_INIT; |
6141 | strbuf_addstr(&sb, " rewrite "); | |
6142 | quote_c_style(p->two->path, &sb, NULL, 0); | |
6143 | strbuf_addf(&sb, " (%d%%)\n", similarity_index(p)); | |
6144 | emit_diff_symbol(opt, DIFF_SYMBOL_SUMMARY, | |
6145 | sb.buf, sb.len, 0); | |
fa842d84 | 6146 | strbuf_release(&sb); |
663af342 | 6147 | } |
146fdb0d | 6148 | show_mode_change(opt, p, !p->score); |
4bbd261b SE |
6149 | break; |
6150 | } | |
6151 | } | |
6152 | ||
fcb3d0ad | 6153 | struct patch_id_t { |
36261e42 | 6154 | git_hash_ctx *ctx; |
fcb3d0ad JS |
6155 | int patchlen; |
6156 | }; | |
6157 | ||
6158 | static int remove_space(char *line, int len) | |
6159 | { | |
6160 | int i; | |
663af342 PH |
6161 | char *dst = line; |
6162 | unsigned char c; | |
fcb3d0ad | 6163 | |
663af342 PH |
6164 | for (i = 0; i < len; i++) |
6165 | if (!isspace((c = line[i]))) | |
6166 | *dst++ = c; | |
fcb3d0ad | 6167 | |
663af342 | 6168 | return dst - line; |
fcb3d0ad JS |
6169 | } |
6170 | ||
36261e42 | 6171 | void flush_one_hunk(struct object_id *result, git_hash_ctx *ctx) |
a8f6855f SB |
6172 | { |
6173 | unsigned char hash[GIT_MAX_RAWSZ]; | |
6174 | unsigned short carry = 0; | |
6175 | int i; | |
6176 | ||
36261e42 | 6177 | the_hash_algo->final_fn(hash, ctx); |
6178 | the_hash_algo->init_fn(ctx); | |
a8f6855f | 6179 | /* 20-byte sum, with carry */ |
36261e42 | 6180 | for (i = 0; i < the_hash_algo->rawsz; ++i) { |
a8f6855f SB |
6181 | carry += result->hash[i] + hash[i]; |
6182 | result->hash[i] = carry; | |
6183 | carry >>= 8; | |
6184 | } | |
6185 | } | |
6186 | ||
a8d5eb6d | 6187 | static int patch_id_consume(void *priv, char *line, unsigned long len) |
fcb3d0ad JS |
6188 | { |
6189 | struct patch_id_t *data = priv; | |
6190 | int new_len; | |
6191 | ||
82a62015 | 6192 | if (len > 12 && starts_with(line, "\\ ")) |
a8d5eb6d | 6193 | return 0; |
fcb3d0ad JS |
6194 | new_len = remove_space(line, len); |
6195 | ||
36261e42 | 6196 | the_hash_algo->update_fn(data->ctx, line, new_len); |
fcb3d0ad | 6197 | data->patchlen += new_len; |
a8d5eb6d | 6198 | return 0; |
fcb3d0ad JS |
6199 | } |
6200 | ||
36261e42 | 6201 | static void patch_id_add_string(git_hash_ctx *ctx, const char *str) |
977db6b4 | 6202 | { |
36261e42 | 6203 | the_hash_algo->update_fn(ctx, str, strlen(str)); |
977db6b4 JK |
6204 | } |
6205 | ||
36261e42 | 6206 | static void patch_id_add_mode(git_hash_ctx *ctx, unsigned mode) |
977db6b4 JK |
6207 | { |
6208 | /* large enough for 2^32 in octal */ | |
6209 | char buf[12]; | |
6210 | int len = xsnprintf(buf, sizeof(buf), "%06o", mode); | |
36261e42 | 6211 | the_hash_algo->update_fn(ctx, buf, len); |
977db6b4 JK |
6212 | } |
6213 | ||
a8f6855f SB |
6214 | /* returns 0 upon success, and writes result into oid */ |
6215 | static int diff_get_patch_id(struct diff_options *options, struct object_id *oid, int diff_header_only, int stable) | |
fcb3d0ad JS |
6216 | { |
6217 | struct diff_queue_struct *q = &diff_queued_diff; | |
6218 | int i; | |
36261e42 | 6219 | git_hash_ctx ctx; |
fcb3d0ad | 6220 | struct patch_id_t data; |
fcb3d0ad | 6221 | |
36261e42 | 6222 | the_hash_algo->init_fn(&ctx); |
fcb3d0ad JS |
6223 | memset(&data, 0, sizeof(struct patch_id_t)); |
6224 | data.ctx = &ctx; | |
a8f6855f | 6225 | oidclr(oid); |
fcb3d0ad JS |
6226 | |
6227 | for (i = 0; i < q->nr; i++) { | |
6228 | xpparam_t xpp; | |
6229 | xdemitconf_t xecfg; | |
fcb3d0ad JS |
6230 | mmfile_t mf1, mf2; |
6231 | struct diff_filepair *p = q->queue[i]; | |
6232 | int len1, len2; | |
6233 | ||
9ccd0a88 | 6234 | memset(&xpp, 0, sizeof(xpp)); |
30b25010 | 6235 | memset(&xecfg, 0, sizeof(xecfg)); |
fcb3d0ad JS |
6236 | if (p->status == 0) |
6237 | return error("internal diff status error"); | |
6238 | if (p->status == DIFF_STATUS_UNKNOWN) | |
6239 | continue; | |
6240 | if (diff_unmodified_pair(p)) | |
6241 | continue; | |
6242 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || | |
6243 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
6244 | continue; | |
6245 | if (DIFF_PAIR_UNMERGED(p)) | |
6246 | continue; | |
6247 | ||
58bf2a4c NTND |
6248 | diff_fill_oid_info(p->one, options->repo->index); |
6249 | diff_fill_oid_info(p->two, options->repo->index); | |
fcb3d0ad | 6250 | |
fcb3d0ad JS |
6251 | len1 = remove_space(p->one->path, strlen(p->one->path)); |
6252 | len2 = remove_space(p->two->path, strlen(p->two->path)); | |
977db6b4 JK |
6253 | patch_id_add_string(&ctx, "diff--git"); |
6254 | patch_id_add_string(&ctx, "a/"); | |
36261e42 | 6255 | the_hash_algo->update_fn(&ctx, p->one->path, len1); |
977db6b4 | 6256 | patch_id_add_string(&ctx, "b/"); |
36261e42 | 6257 | the_hash_algo->update_fn(&ctx, p->two->path, len2); |
977db6b4 JK |
6258 | |
6259 | if (p->one->mode == 0) { | |
6260 | patch_id_add_string(&ctx, "newfilemode"); | |
6261 | patch_id_add_mode(&ctx, p->two->mode); | |
6262 | patch_id_add_string(&ctx, "---/dev/null"); | |
6263 | patch_id_add_string(&ctx, "+++b/"); | |
36261e42 | 6264 | the_hash_algo->update_fn(&ctx, p->two->path, len2); |
977db6b4 JK |
6265 | } else if (p->two->mode == 0) { |
6266 | patch_id_add_string(&ctx, "deletedfilemode"); | |
6267 | patch_id_add_mode(&ctx, p->one->mode); | |
6268 | patch_id_add_string(&ctx, "---a/"); | |
36261e42 | 6269 | the_hash_algo->update_fn(&ctx, p->one->path, len1); |
977db6b4 JK |
6270 | patch_id_add_string(&ctx, "+++/dev/null"); |
6271 | } else { | |
6272 | patch_id_add_string(&ctx, "---a/"); | |
36261e42 | 6273 | the_hash_algo->update_fn(&ctx, p->one->path, len1); |
977db6b4 | 6274 | patch_id_add_string(&ctx, "+++b/"); |
36261e42 | 6275 | the_hash_algo->update_fn(&ctx, p->two->path, len2); |
977db6b4 | 6276 | } |
fcb3d0ad | 6277 | |
3e8e32c3 KW |
6278 | if (diff_header_only) |
6279 | continue; | |
6280 | ||
b78ea5fc NTND |
6281 | if (fill_mmfile(options->repo, &mf1, p->one) < 0 || |
6282 | fill_mmfile(options->repo, &mf2, p->two) < 0) | |
3e8e32c3 KW |
6283 | return error("unable to read files to diff"); |
6284 | ||
b78ea5fc NTND |
6285 | if (diff_filespec_is_binary(options->repo, p->one) || |
6286 | diff_filespec_is_binary(options->repo, p->two)) { | |
36261e42 | 6287 | the_hash_algo->update_fn(&ctx, oid_to_hex(&p->one->oid), |
6288 | the_hash_algo->hexsz); | |
6289 | the_hash_algo->update_fn(&ctx, oid_to_hex(&p->two->oid), | |
6290 | the_hash_algo->hexsz); | |
34597c1f CB |
6291 | continue; |
6292 | } | |
6293 | ||
582aa00b | 6294 | xpp.flags = 0; |
fcb3d0ad | 6295 | xecfg.ctxlen = 3; |
5d934600 ÆAB |
6296 | xecfg.flags = XDL_EMIT_NO_HUNK_HDR; |
6297 | if (xdi_diff_outf(&mf1, &mf2, NULL, | |
b1357391 | 6298 | patch_id_consume, &data, &xpp, &xecfg)) |
3efb9880 JK |
6299 | return error("unable to generate patch-id diff for %s", |
6300 | p->one->path); | |
a8f6855f SB |
6301 | |
6302 | if (stable) | |
6303 | flush_one_hunk(oid, &ctx); | |
fcb3d0ad JS |
6304 | } |
6305 | ||
a8f6855f | 6306 | if (!stable) |
5951bf46 | 6307 | the_hash_algo->final_oid_fn(oid, &ctx); |
a8f6855f | 6308 | |
fcb3d0ad JS |
6309 | return 0; |
6310 | } | |
6311 | ||
a8f6855f | 6312 | int diff_flush_patch_id(struct diff_options *options, struct object_id *oid, int diff_header_only, int stable) |
fcb3d0ad JS |
6313 | { |
6314 | struct diff_queue_struct *q = &diff_queued_diff; | |
6315 | int i; | |
a8f6855f | 6316 | int result = diff_get_patch_id(options, oid, diff_header_only, stable); |
fcb3d0ad JS |
6317 | |
6318 | for (i = 0; i < q->nr; i++) | |
6319 | diff_free_filepair(q->queue[i]); | |
6320 | ||
6321 | free(q->queue); | |
9ca5df90 | 6322 | DIFF_QUEUE_CLEAR(q); |
fcb3d0ad JS |
6323 | |
6324 | return result; | |
6325 | } | |
6326 | ||
946c3784 | 6327 | static int is_summary_empty(const struct diff_queue_struct *q) |
6973dcae | 6328 | { |
6973dcae | 6329 | int i; |
6973dcae | 6330 | |
946c3784 TH |
6331 | for (i = 0; i < q->nr; i++) { |
6332 | const struct diff_filepair *p = q->queue[i]; | |
6333 | ||
6334 | switch (p->status) { | |
6335 | case DIFF_STATUS_DELETED: | |
6336 | case DIFF_STATUS_ADDED: | |
6337 | case DIFF_STATUS_COPIED: | |
6338 | case DIFF_STATUS_RENAMED: | |
6339 | return 0; | |
6340 | default: | |
6341 | if (p->score) | |
6342 | return 0; | |
6343 | if (p->one->mode && p->two->mode && | |
6344 | p->one->mode != p->two->mode) | |
6345 | return 0; | |
6346 | break; | |
6347 | } | |
6973dcae | 6348 | } |
946c3784 TH |
6349 | return 1; |
6350 | } | |
6351 | ||
f31027c9 | 6352 | static const char rename_limit_warning[] = |
05d2c61c | 6353 | N_("exhaustive rename detection was skipped due to too many files."); |
f31027c9 JH |
6354 | |
6355 | static const char degrade_cc_to_c_warning[] = | |
db424979 | 6356 | N_("only found copies from modified paths due to too many files."); |
f31027c9 JH |
6357 | |
6358 | static const char rename_limit_advice[] = | |
db424979 VA |
6359 | N_("you may want to set your %s variable to at least " |
6360 | "%d and retry the command."); | |
f31027c9 JH |
6361 | |
6362 | void diff_warn_rename_limit(const char *varname, int needed, int degraded_cc) | |
6363 | { | |
4e056c98 | 6364 | fflush(stdout); |
f31027c9 | 6365 | if (degraded_cc) |
db424979 | 6366 | warning(_(degrade_cc_to_c_warning)); |
f31027c9 | 6367 | else if (needed) |
db424979 | 6368 | warning(_(rename_limit_warning)); |
f31027c9 JH |
6369 | else |
6370 | return; | |
9f7e4bfa | 6371 | if (0 < needed) |
db424979 | 6372 | warning(_(rename_limit_advice), varname, needed); |
f31027c9 JH |
6373 | } |
6374 | ||
95433eee EN |
6375 | static void create_filepairs_for_header_only_notifications(struct diff_options *o) |
6376 | { | |
6377 | struct strset present; | |
6378 | struct diff_queue_struct *q = &diff_queued_diff; | |
6379 | struct hashmap_iter iter; | |
6380 | struct strmap_entry *e; | |
6381 | int i; | |
6382 | ||
6383 | strset_init_with_options(&present, /*pool*/ NULL, /*strdup*/ 0); | |
6384 | ||
6385 | /* | |
6386 | * Find out which paths exist in diff_queued_diff, preferring | |
6387 | * one->path for any pair that has multiple paths. | |
6388 | */ | |
6389 | for (i = 0; i < q->nr; i++) { | |
6390 | struct diff_filepair *p = q->queue[i]; | |
6391 | char *path = p->one->path ? p->one->path : p->two->path; | |
6392 | ||
6393 | if (strmap_contains(o->additional_path_headers, path)) | |
6394 | strset_add(&present, path); | |
6395 | } | |
6396 | ||
6397 | /* | |
6398 | * Loop over paths in additional_path_headers; for each NOT already | |
6399 | * in diff_queued_diff, create a synthetic filepair and insert that | |
6400 | * into diff_queued_diff. | |
6401 | */ | |
6402 | strmap_for_each_entry(o->additional_path_headers, &iter, e) { | |
6403 | if (!strset_contains(&present, e->key)) { | |
6404 | struct diff_filespec *one, *two; | |
6405 | struct diff_filepair *p; | |
6406 | ||
6407 | one = alloc_filespec(e->key); | |
6408 | two = alloc_filespec(e->key); | |
6409 | fill_filespec(one, null_oid(), 0, 0); | |
6410 | fill_filespec(two, null_oid(), 0, 0); | |
6411 | p = diff_queue(q, one, two); | |
6412 | p->status = DIFF_STATUS_MODIFIED; | |
6413 | } | |
6414 | } | |
6415 | ||
6416 | /* Re-sort the filepairs */ | |
6417 | diffcore_fix_diff_index(); | |
6418 | ||
6419 | /* Cleanup */ | |
6420 | strset_clear(&present); | |
6421 | } | |
6422 | ||
ec331506 SB |
6423 | static void diff_flush_patch_all_file_pairs(struct diff_options *o) |
6424 | { | |
6425 | int i; | |
e6e045f8 | 6426 | static struct emitted_diff_symbols esm = EMITTED_DIFF_SYMBOLS_INIT; |
ec331506 | 6427 | struct diff_queue_struct *q = &diff_queued_diff; |
091f8e28 SB |
6428 | |
6429 | if (WSEH_NEW & WS_RULE_MASK) | |
033abf97 | 6430 | BUG("WS rules bit mask overlaps with diff symbol flags"); |
091f8e28 | 6431 | |
2e2d5ac1 SB |
6432 | if (o->color_moved) |
6433 | o->emitted_symbols = &esm; | |
e6e045f8 | 6434 | |
95433eee EN |
6435 | if (o->additional_path_headers) |
6436 | create_filepairs_for_header_only_notifications(o); | |
6437 | ||
ec331506 SB |
6438 | for (i = 0; i < q->nr; i++) { |
6439 | struct diff_filepair *p = q->queue[i]; | |
6440 | if (check_pair_status(p)) | |
6441 | diff_flush_patch(p, o); | |
6442 | } | |
e6e045f8 SB |
6443 | |
6444 | if (o->emitted_symbols) { | |
2e2d5ac1 | 6445 | if (o->color_moved) { |
72962e8b PW |
6446 | struct mem_pool entry_pool; |
6447 | struct moved_entry_list *entry_list; | |
2e2d5ac1 | 6448 | |
72962e8b PW |
6449 | mem_pool_init(&entry_pool, 1024 * 1024); |
6450 | entry_list = add_lines_to_move_detection(o, | |
6451 | &entry_pool); | |
6452 | mark_color_as_moved(o, entry_list); | |
86b452e2 SB |
6453 | if (o->color_moved == COLOR_MOVED_ZEBRA_DIM) |
6454 | dim_moved_lines(o); | |
2e2d5ac1 | 6455 | |
72962e8b PW |
6456 | mem_pool_discard(&entry_pool, 0); |
6457 | free(entry_list); | |
2e2d5ac1 SB |
6458 | } |
6459 | ||
e6e045f8 SB |
6460 | for (i = 0; i < esm.nr; i++) |
6461 | emit_diff_symbol_from_struct(o, &esm.buf[i]); | |
6462 | ||
6463 | for (i = 0; i < esm.nr; i++) | |
6464 | free((void *)esm.buf[i].line); | |
48edf3a0 JK |
6465 | esm.nr = 0; |
6466 | ||
6467 | o->emitted_symbols = NULL; | |
e6e045f8 | 6468 | } |
ec331506 SB |
6469 | } |
6470 | ||
e900d494 ÆAB |
6471 | static void diff_free_file(struct diff_options *options) |
6472 | { | |
6473 | if (options->close_file) | |
6474 | fclose(options->file); | |
6475 | } | |
6476 | ||
c45dc9cf ÆAB |
6477 | static void diff_free_ignore_regex(struct diff_options *options) |
6478 | { | |
6479 | int i; | |
6480 | ||
6481 | for (i = 0; i < options->ignore_regex_nr; i++) { | |
6482 | regfree(options->ignore_regex[i]); | |
6483 | free(options->ignore_regex[i]); | |
6484 | } | |
6485 | free(options->ignore_regex); | |
6486 | } | |
6487 | ||
e900d494 ÆAB |
6488 | void diff_free(struct diff_options *options) |
6489 | { | |
6490 | if (options->no_free) | |
6491 | return; | |
6492 | ||
6493 | diff_free_file(options); | |
c45dc9cf | 6494 | diff_free_ignore_regex(options); |
244c2724 | 6495 | clear_pathspec(&options->pathspec); |
6ee36364 | 6496 | FREE_AND_NULL(options->parseopts); |
e900d494 ÆAB |
6497 | } |
6498 | ||
6973dcae JH |
6499 | void diff_flush(struct diff_options *options) |
6500 | { | |
6501 | struct diff_queue_struct *q = &diff_queued_diff; | |
c6744349 | 6502 | int i, output_format = options->output_format; |
946c3784 | 6503 | int separator = 0; |
1c57a627 | 6504 | int dirstat_by_line = 0; |
6973dcae | 6505 | |
c6744349 TH |
6506 | /* |
6507 | * Order: raw, stat, summary, patch | |
6508 | * or: name/name-status/checkdiff (other bits clear) | |
6509 | */ | |
95433eee | 6510 | if (!q->nr && !options->additional_path_headers) |
946c3784 | 6511 | goto free_queue; |
6973dcae | 6512 | |
c6744349 TH |
6513 | if (output_format & (DIFF_FORMAT_RAW | |
6514 | DIFF_FORMAT_NAME | | |
6515 | DIFF_FORMAT_NAME_STATUS | | |
6516 | DIFF_FORMAT_CHECKDIFF)) { | |
6973dcae JH |
6517 | for (i = 0; i < q->nr; i++) { |
6518 | struct diff_filepair *p = q->queue[i]; | |
c6744349 TH |
6519 | if (check_pair_status(p)) |
6520 | flush_one_pair(p, options); | |
6973dcae | 6521 | } |
946c3784 | 6522 | separator++; |
6973dcae | 6523 | } |
c6744349 | 6524 | |
0d1e0e78 | 6525 | if (output_format & DIFF_FORMAT_DIRSTAT && options->flags.dirstat_by_line) |
1c57a627 JH |
6526 | dirstat_by_line = 1; |
6527 | ||
6528 | if (output_format & (DIFF_FORMAT_DIFFSTAT|DIFF_FORMAT_SHORTSTAT|DIFF_FORMAT_NUMSTAT) || | |
6529 | dirstat_by_line) { | |
5e2b0636 | 6530 | struct diffstat_t diffstat; |
c6744349 | 6531 | |
e4cb659e | 6532 | compute_diffstat(options, &diffstat, q); |
74e2abe5 JH |
6533 | if (output_format & DIFF_FORMAT_NUMSTAT) |
6534 | show_numstat(&diffstat, options); | |
6535 | if (output_format & DIFF_FORMAT_DIFFSTAT) | |
6536 | show_stats(&diffstat, options); | |
f604652e | 6537 | if (output_format & DIFF_FORMAT_SHORTSTAT) |
c0c77734 | 6538 | show_shortstats(&diffstat, options); |
ab27389a | 6539 | if (output_format & DIFF_FORMAT_DIRSTAT && dirstat_by_line) |
1c57a627 | 6540 | show_dirstat_by_line(&diffstat, options); |
f604652e | 6541 | free_diffstat_info(&diffstat); |
3969cf7d | 6542 | separator++; |
6973dcae | 6543 | } |
1c57a627 | 6544 | if ((output_format & DIFF_FORMAT_DIRSTAT) && !dirstat_by_line) |
c04a7155 | 6545 | show_dirstat(options); |
6973dcae | 6546 | |
946c3784 | 6547 | if (output_format & DIFF_FORMAT_SUMMARY && !is_summary_empty(q)) { |
7be57610 BY |
6548 | for (i = 0; i < q->nr; i++) { |
6549 | diff_summary(options, q->queue[i]); | |
6550 | } | |
3969cf7d | 6551 | separator++; |
6973dcae JH |
6552 | } |
6553 | ||
6977c250 | 6554 | if (output_format & DIFF_FORMAT_NO_OUTPUT && |
0d1e0e78 BW |
6555 | options->flags.exit_with_status && |
6556 | options->flags.diff_from_contents) { | |
6977c250 LA |
6557 | /* |
6558 | * run diff_flush_patch for the exit status. setting | |
749f763d | 6559 | * options->file to /dev/null should be safe, because we |
6977c250 LA |
6560 | * aren't supposed to produce any output anyway. |
6561 | */ | |
e900d494 | 6562 | diff_free_file(options); |
23a9e071 | 6563 | options->file = xfopen("/dev/null", "w"); |
6977c250 | 6564 | options->close_file = 1; |
2e2d5ac1 | 6565 | options->color_moved = 0; |
6977c250 LA |
6566 | for (i = 0; i < q->nr; i++) { |
6567 | struct diff_filepair *p = q->queue[i]; | |
6568 | if (check_pair_status(p)) | |
6569 | diff_flush_patch(p, options); | |
6570 | if (options->found_changes) | |
6571 | break; | |
6572 | } | |
6573 | } | |
6574 | ||
c6744349 | 6575 | if (output_format & DIFF_FORMAT_PATCH) { |
946c3784 | 6576 | if (separator) { |
091f8e28 | 6577 | emit_diff_symbol(options, DIFF_SYMBOL_SEPARATOR, NULL, 0, 0); |
30b7e1e7 | 6578 | if (options->stat_sep) |
946c3784 | 6579 | /* attach patch instead of inline */ |
30b7e1e7 SB |
6580 | emit_diff_symbol(options, DIFF_SYMBOL_STAT_SEP, |
6581 | NULL, 0, 0); | |
c6744349 TH |
6582 | } |
6583 | ||
ec331506 | 6584 | diff_flush_patch_all_file_pairs(options); |
4bbd261b SE |
6585 | } |
6586 | ||
04245581 JK |
6587 | if (output_format & DIFF_FORMAT_CALLBACK) |
6588 | options->format_callback(q, options, options->format_callback_data); | |
6589 | ||
c6744349 TH |
6590 | for (i = 0; i < q->nr; i++) |
6591 | diff_free_filepair(q->queue[i]); | |
946c3784 | 6592 | free_queue: |
6973dcae | 6593 | free(q->queue); |
9ca5df90 | 6594 | DIFF_QUEUE_CLEAR(q); |
e900d494 | 6595 | diff_free(options); |
f245194f JH |
6596 | |
6597 | /* | |
97bf2a08 | 6598 | * Report the content-level differences with HAS_CHANGES; |
f245194f JH |
6599 | * diff_addremove/diff_change does not set the bit when |
6600 | * DIFF_FROM_CONTENTS is in effect (e.g. with -w). | |
6601 | */ | |
0d1e0e78 | 6602 | if (options->flags.diff_from_contents) { |
f245194f | 6603 | if (options->found_changes) |
0d1e0e78 | 6604 | options->flags.has_changes = 1; |
f245194f | 6605 | else |
0d1e0e78 | 6606 | options->flags.has_changes = 0; |
f245194f | 6607 | } |
6973dcae JH |
6608 | } |
6609 | ||
08578fa1 JH |
6610 | static int match_filter(const struct diff_options *options, const struct diff_filepair *p) |
6611 | { | |
6612 | return (((p->status == DIFF_STATUS_MODIFIED) && | |
6613 | ((p->score && | |
1ecc1cbd | 6614 | filter_bit_tst(DIFF_STATUS_FILTER_BROKEN, options)) || |
08578fa1 | 6615 | (!p->score && |
1ecc1cbd | 6616 | filter_bit_tst(DIFF_STATUS_MODIFIED, options)))) || |
08578fa1 | 6617 | ((p->status != DIFF_STATUS_MODIFIED) && |
1ecc1cbd | 6618 | filter_bit_tst(p->status, options))); |
08578fa1 JH |
6619 | } |
6620 | ||
949226fe | 6621 | static void diffcore_apply_filter(struct diff_options *options) |
6973dcae JH |
6622 | { |
6623 | int i; | |
6624 | struct diff_queue_struct *q = &diff_queued_diff; | |
6625 | struct diff_queue_struct outq; | |
949226fe | 6626 | |
9ca5df90 | 6627 | DIFF_QUEUE_CLEAR(&outq); |
6973dcae | 6628 | |
1ecc1cbd | 6629 | if (!options->filter) |
6973dcae JH |
6630 | return; |
6631 | ||
1ecc1cbd | 6632 | if (filter_bit_tst(DIFF_STATUS_FILTER_AON, options)) { |
6973dcae JH |
6633 | int found; |
6634 | for (i = found = 0; !found && i < q->nr; i++) { | |
08578fa1 | 6635 | if (match_filter(options, q->queue[i])) |
6973dcae JH |
6636 | found++; |
6637 | } | |
6638 | if (found) | |
6639 | return; | |
6640 | ||
6641 | /* otherwise we will clear the whole queue | |
6642 | * by copying the empty outq at the end of this | |
6643 | * function, but first clear the current entries | |
6644 | * in the queue. | |
6645 | */ | |
6646 | for (i = 0; i < q->nr; i++) | |
6647 | diff_free_filepair(q->queue[i]); | |
6648 | } | |
6649 | else { | |
6650 | /* Only the matching ones */ | |
6651 | for (i = 0; i < q->nr; i++) { | |
6652 | struct diff_filepair *p = q->queue[i]; | |
08578fa1 | 6653 | if (match_filter(options, p)) |
6973dcae JH |
6654 | diff_q(&outq, p); |
6655 | else | |
6656 | diff_free_filepair(p); | |
6657 | } | |
6658 | } | |
6659 | free(q->queue); | |
6660 | *q = outq; | |
6661 | } | |
6662 | ||
5701115a | 6663 | /* Check whether two filespecs with the same mode and size are identical */ |
b78ea5fc NTND |
6664 | static int diff_filespec_is_identical(struct repository *r, |
6665 | struct diff_filespec *one, | |
5701115a SV |
6666 | struct diff_filespec *two) |
6667 | { | |
2b459b48 JH |
6668 | if (S_ISGITLINK(one->mode)) |
6669 | return 0; | |
1c37e86a | 6670 | if (diff_populate_filespec(r, one, NULL)) |
5701115a | 6671 | return 0; |
1c37e86a | 6672 | if (diff_populate_filespec(r, two, NULL)) |
5701115a SV |
6673 | return 0; |
6674 | return !memcmp(one->data, two->data, one->size); | |
6675 | } | |
6676 | ||
b78ea5fc NTND |
6677 | static int diff_filespec_check_stat_unmatch(struct repository *r, |
6678 | struct diff_filepair *p) | |
fceb9072 | 6679 | { |
1c37e86a JT |
6680 | struct diff_populate_filespec_options dpf_options = { |
6681 | .check_size_only = 1, | |
95acf11a JT |
6682 | .missing_object_cb = diff_queued_diff_prefetch, |
6683 | .missing_object_data = r, | |
1c37e86a JT |
6684 | }; |
6685 | ||
f34b205f NTND |
6686 | if (p->done_skip_stat_unmatch) |
6687 | return p->skip_stat_unmatch_result; | |
6688 | ||
6689 | p->done_skip_stat_unmatch = 1; | |
6690 | p->skip_stat_unmatch_result = 0; | |
fceb9072 NTND |
6691 | /* |
6692 | * 1. Entries that come from stat info dirtiness | |
6693 | * always have both sides (iow, not create/delete), | |
6694 | * one side of the object name is unknown, with | |
6695 | * the same mode and size. Keep the ones that | |
6696 | * do not match these criteria. They have real | |
6697 | * differences. | |
6698 | * | |
6699 | * 2. At this point, the file is known to be modified, | |
6700 | * with the same mode and size, and the object | |
6701 | * name of one side is unknown. Need to inspect | |
6702 | * the identical contents. | |
6703 | */ | |
6704 | if (!DIFF_FILE_VALID(p->one) || /* (1) */ | |
6705 | !DIFF_FILE_VALID(p->two) || | |
41c9560e | 6706 | (p->one->oid_valid && p->two->oid_valid) || |
fceb9072 | 6707 | (p->one->mode != p->two->mode) || |
1c37e86a JT |
6708 | diff_populate_filespec(r, p->one, &dpf_options) || |
6709 | diff_populate_filespec(r, p->two, &dpf_options) || | |
fceb9072 | 6710 | (p->one->size != p->two->size) || |
b78ea5fc | 6711 | !diff_filespec_is_identical(r, p->one, p->two)) /* (2) */ |
f34b205f NTND |
6712 | p->skip_stat_unmatch_result = 1; |
6713 | return p->skip_stat_unmatch_result; | |
fceb9072 NTND |
6714 | } |
6715 | ||
fb13227e JH |
6716 | static void diffcore_skip_stat_unmatch(struct diff_options *diffopt) |
6717 | { | |
6718 | int i; | |
6719 | struct diff_queue_struct *q = &diff_queued_diff; | |
6720 | struct diff_queue_struct outq; | |
9ca5df90 | 6721 | DIFF_QUEUE_CLEAR(&outq); |
fb13227e JH |
6722 | |
6723 | for (i = 0; i < q->nr; i++) { | |
6724 | struct diff_filepair *p = q->queue[i]; | |
6725 | ||
b78ea5fc | 6726 | if (diff_filespec_check_stat_unmatch(diffopt->repo, p)) |
fb13227e JH |
6727 | diff_q(&outq, p); |
6728 | else { | |
6729 | /* | |
6730 | * The caller can subtract 1 from skip_stat_unmatch | |
6731 | * to determine how many paths were dirty only | |
6732 | * due to stat info mismatch. | |
6733 | */ | |
0d1e0e78 | 6734 | if (!diffopt->flags.no_index) |
6d2d9e86 | 6735 | diffopt->skip_stat_unmatch++; |
fb13227e JH |
6736 | diff_free_filepair(p); |
6737 | } | |
6738 | } | |
6739 | free(q->queue); | |
6740 | *q = outq; | |
6741 | } | |
6742 | ||
730f7284 JH |
6743 | static int diffnamecmp(const void *a_, const void *b_) |
6744 | { | |
6745 | const struct diff_filepair *a = *((const struct diff_filepair **)a_); | |
6746 | const struct diff_filepair *b = *((const struct diff_filepair **)b_); | |
6747 | const char *name_a, *name_b; | |
6748 | ||
6749 | name_a = a->one ? a->one->path : a->two->path; | |
6750 | name_b = b->one ? b->one->path : b->two->path; | |
6751 | return strcmp(name_a, name_b); | |
6752 | } | |
6753 | ||
784c0dae | 6754 | void diffcore_fix_diff_index(void) |
730f7284 JH |
6755 | { |
6756 | struct diff_queue_struct *q = &diff_queued_diff; | |
9ed0d8d6 | 6757 | QSORT(q->queue, q->nr, diffnamecmp); |
730f7284 JH |
6758 | } |
6759 | ||
95acf11a JT |
6760 | void diff_add_if_missing(struct repository *r, |
6761 | struct oid_array *to_fetch, | |
6762 | const struct diff_filespec *filespec) | |
7fbbcb21 JT |
6763 | { |
6764 | if (filespec && filespec->oid_valid && | |
a63694f5 | 6765 | !S_ISGITLINK(filespec->mode) && |
7fbbcb21 JT |
6766 | oid_object_info_extended(r, &filespec->oid, NULL, |
6767 | OBJECT_INFO_FOR_PREFETCH)) | |
6768 | oid_array_append(to_fetch, &filespec->oid); | |
6769 | } | |
6770 | ||
95acf11a | 6771 | void diff_queued_diff_prefetch(void *repository) |
6973dcae | 6772 | { |
95acf11a JT |
6773 | struct repository *repo = repository; |
6774 | int i; | |
6775 | struct diff_queue_struct *q = &diff_queued_diff; | |
6776 | struct oid_array to_fetch = OID_ARRAY_INIT; | |
7fbbcb21 | 6777 | |
95acf11a JT |
6778 | for (i = 0; i < q->nr; i++) { |
6779 | struct diff_filepair *p = q->queue[i]; | |
6780 | diff_add_if_missing(repo, &to_fetch, p->one); | |
6781 | diff_add_if_missing(repo, &to_fetch, p->two); | |
7fbbcb21 JT |
6782 | } |
6783 | ||
95acf11a JT |
6784 | /* |
6785 | * NEEDSWORK: Consider deduplicating the OIDs sent. | |
6786 | */ | |
6787 | promisor_remote_get_direct(repo, to_fetch.oid, to_fetch.nr); | |
6788 | ||
6789 | oid_array_clear(&to_fetch); | |
6790 | } | |
6791 | ||
6792 | void diffcore_std(struct diff_options *options) | |
6793 | { | |
6794 | int output_formats_to_prefetch = DIFF_FORMAT_DIFFSTAT | | |
6795 | DIFF_FORMAT_NUMSTAT | | |
6796 | DIFF_FORMAT_PATCH | | |
6797 | DIFF_FORMAT_SHORTSTAT | | |
6798 | DIFF_FORMAT_DIRSTAT; | |
6799 | ||
6800 | /* | |
6801 | * Check if the user requested a blob-data-requiring diff output and/or | |
6802 | * break-rewrite detection (which requires blob data). If yes, prefetch | |
6803 | * the diff pairs. | |
6804 | * | |
6805 | * If no prefetching occurs, diffcore_rename() will prefetch if it | |
6806 | * decides that it needs inexact rename detection. | |
6807 | */ | |
6808 | if (options->repo == the_repository && has_promisor_remote() && | |
6809 | (options->output_format & output_formats_to_prefetch || | |
6810 | options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK)) | |
6811 | diff_queued_diff_prefetch(options->repo); | |
6812 | ||
7195fbfa | 6813 | /* NOTE please keep the following in sync with diff_tree_combined() */ |
9d865356 | 6814 | if (options->skip_stat_unmatch) |
fb13227e | 6815 | diffcore_skip_stat_unmatch(options); |
44c48a90 JH |
6816 | if (!options->found_follow) { |
6817 | /* See try_to_follow_renames() in tree-diff.c */ | |
6818 | if (options->break_opt != -1) | |
b78ea5fc NTND |
6819 | diffcore_break(options->repo, |
6820 | options->break_opt); | |
44c48a90 JH |
6821 | if (options->detect_rename) |
6822 | diffcore_rename(options); | |
6823 | if (options->break_opt != -1) | |
6824 | diffcore_merge_broken(); | |
6825 | } | |
cf63051a | 6826 | if (options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK) |
382f013b | 6827 | diffcore_pickaxe(options); |
6973dcae JH |
6828 | if (options->orderfile) |
6829 | diffcore_order(options->orderfile); | |
1eb4136a JH |
6830 | if (options->rotate_to) |
6831 | diffcore_rotate(options); | |
44c48a90 JH |
6832 | if (!options->found_follow) |
6833 | /* See try_to_follow_renames() in tree-diff.c */ | |
6834 | diff_resolve_rename_copy(); | |
949226fe | 6835 | diffcore_apply_filter(options); |
68aacb2f | 6836 | |
0d1e0e78 BW |
6837 | if (diff_queued_diff.nr && !options->flags.diff_from_contents) |
6838 | options->flags.has_changes = 1; | |
8f67f8ae | 6839 | else |
0d1e0e78 | 6840 | options->flags.has_changes = 0; |
1da6175d | 6841 | |
44c48a90 | 6842 | options->found_follow = 0; |
6973dcae JH |
6843 | } |
6844 | ||
da31b358 JH |
6845 | int diff_result_code(struct diff_options *opt, int status) |
6846 | { | |
6847 | int result = 0; | |
f31027c9 | 6848 | |
c9fc4415 | 6849 | diff_warn_rename_limit("diff.renameLimit", |
f31027c9 JH |
6850 | opt->needed_rename_limit, |
6851 | opt->degraded_cc_to_c); | |
0d1e0e78 | 6852 | if (!opt->flags.exit_with_status && |
da31b358 JH |
6853 | !(opt->output_format & DIFF_FORMAT_CHECKDIFF)) |
6854 | return status; | |
0d1e0e78 BW |
6855 | if (opt->flags.exit_with_status && |
6856 | opt->flags.has_changes) | |
da31b358 JH |
6857 | result |= 01; |
6858 | if ((opt->output_format & DIFF_FORMAT_CHECKDIFF) && | |
0d1e0e78 | 6859 | opt->flags.check_failed) |
da31b358 JH |
6860 | result |= 02; |
6861 | return result; | |
6862 | } | |
6973dcae | 6863 | |
28b9264d JH |
6864 | int diff_can_quit_early(struct diff_options *opt) |
6865 | { | |
0d1e0e78 | 6866 | return (opt->flags.quick && |
28b9264d | 6867 | !opt->filter && |
0d1e0e78 | 6868 | opt->flags.has_changes); |
28b9264d JH |
6869 | } |
6870 | ||
aee9c7d6 JL |
6871 | /* |
6872 | * Shall changes to this submodule be ignored? | |
6873 | * | |
6874 | * Submodule changes can be configured to be ignored separately for each path, | |
6875 | * but that configuration can be overridden from the command line. | |
6876 | */ | |
6877 | static int is_submodule_ignored(const char *path, struct diff_options *options) | |
6878 | { | |
6879 | int ignored = 0; | |
02f2f56b | 6880 | struct diff_flags orig_flags = options->flags; |
0d1e0e78 | 6881 | if (!options->flags.override_submodule_config) |
aee9c7d6 | 6882 | set_diffopt_flags_from_submodule_config(options, path); |
0d1e0e78 | 6883 | if (options->flags.ignore_submodules) |
aee9c7d6 JL |
6884 | ignored = 1; |
6885 | options->flags = orig_flags; | |
6886 | return ignored; | |
6887 | } | |
6888 | ||
e4cb659e DF |
6889 | void compute_diffstat(struct diff_options *options, |
6890 | struct diffstat_t *diffstat, | |
6891 | struct diff_queue_struct *q) | |
6892 | { | |
6893 | int i; | |
6894 | ||
6895 | memset(diffstat, 0, sizeof(struct diffstat_t)); | |
6896 | for (i = 0; i < q->nr; i++) { | |
6897 | struct diff_filepair *p = q->queue[i]; | |
6898 | if (check_pair_status(p)) | |
6899 | diff_flush_stat(p, options, diffstat); | |
6900 | } | |
6901 | } | |
6902 | ||
6973dcae JH |
6903 | void diff_addremove(struct diff_options *options, |
6904 | int addremove, unsigned mode, | |
c26022ea BW |
6905 | const struct object_id *oid, |
6906 | int oid_valid, | |
e3d42c47 | 6907 | const char *concatpath, unsigned dirty_submodule) |
6973dcae | 6908 | { |
6973dcae JH |
6909 | struct diff_filespec *one, *two; |
6910 | ||
aee9c7d6 | 6911 | if (S_ISGITLINK(mode) && is_submodule_ignored(concatpath, options)) |
50fd9bd8 JS |
6912 | return; |
6913 | ||
6973dcae JH |
6914 | /* This may look odd, but it is a preparation for |
6915 | * feeding "there are unchanged files which should | |
6916 | * not produce diffs, but when you are doing copy | |
6917 | * detection you would need them, so here they are" | |
6918 | * entries to the diff-core. They will be prefixed | |
6919 | * with something like '=' or '*' (I haven't decided | |
6920 | * which but should not make any difference). | |
a6080a0a | 6921 | * Feeding the same new and old to diff_change() |
6973dcae JH |
6922 | * also has the same effect. |
6923 | * Before the final output happens, they are pruned after | |
6924 | * merged into rename/copy pairs as appropriate. | |
6925 | */ | |
0d1e0e78 | 6926 | if (options->flags.reverse_diff) |
6973dcae JH |
6927 | addremove = (addremove == '+' ? '-' : |
6928 | addremove == '-' ? '+' : addremove); | |
6929 | ||
cd676a51 JH |
6930 | if (options->prefix && |
6931 | strncmp(concatpath, options->prefix, options->prefix_length)) | |
6932 | return; | |
6933 | ||
6973dcae JH |
6934 | one = alloc_filespec(concatpath); |
6935 | two = alloc_filespec(concatpath); | |
6936 | ||
6937 | if (addremove != '+') | |
f9704c2d | 6938 | fill_filespec(one, oid, oid_valid, mode); |
e3d42c47 | 6939 | if (addremove != '-') { |
f9704c2d | 6940 | fill_filespec(two, oid, oid_valid, mode); |
e3d42c47 JL |
6941 | two->dirty_submodule = dirty_submodule; |
6942 | } | |
6973dcae JH |
6943 | |
6944 | diff_queue(&diff_queued_diff, one, two); | |
0d1e0e78 BW |
6945 | if (!options->flags.diff_from_contents) |
6946 | options->flags.has_changes = 1; | |
6973dcae JH |
6947 | } |
6948 | ||
6949 | void diff_change(struct diff_options *options, | |
6950 | unsigned old_mode, unsigned new_mode, | |
94a0097a BW |
6951 | const struct object_id *old_oid, |
6952 | const struct object_id *new_oid, | |
6953 | int old_oid_valid, int new_oid_valid, | |
e3d42c47 JL |
6954 | const char *concatpath, |
6955 | unsigned old_dirty_submodule, unsigned new_dirty_submodule) | |
6973dcae | 6956 | { |
6973dcae | 6957 | struct diff_filespec *one, *two; |
f34b205f | 6958 | struct diff_filepair *p; |
6973dcae | 6959 | |
aee9c7d6 JL |
6960 | if (S_ISGITLINK(old_mode) && S_ISGITLINK(new_mode) && |
6961 | is_submodule_ignored(concatpath, options)) | |
50fd9bd8 JS |
6962 | return; |
6963 | ||
0d1e0e78 | 6964 | if (options->flags.reverse_diff) { |
35d803bc | 6965 | SWAP(old_mode, new_mode); |
94a0097a BW |
6966 | SWAP(old_oid, new_oid); |
6967 | SWAP(old_oid_valid, new_oid_valid); | |
35d803bc | 6968 | SWAP(old_dirty_submodule, new_dirty_submodule); |
6973dcae | 6969 | } |
cd676a51 JH |
6970 | |
6971 | if (options->prefix && | |
6972 | strncmp(concatpath, options->prefix, options->prefix_length)) | |
6973 | return; | |
6974 | ||
6973dcae JH |
6975 | one = alloc_filespec(concatpath); |
6976 | two = alloc_filespec(concatpath); | |
f9704c2d BW |
6977 | fill_filespec(one, old_oid, old_oid_valid, old_mode); |
6978 | fill_filespec(two, new_oid, new_oid_valid, new_mode); | |
e3d42c47 JL |
6979 | one->dirty_submodule = old_dirty_submodule; |
6980 | two->dirty_submodule = new_dirty_submodule; | |
f34b205f | 6981 | p = diff_queue(&diff_queued_diff, one, two); |
6973dcae | 6982 | |
0d1e0e78 | 6983 | if (options->flags.diff_from_contents) |
f34b205f NTND |
6984 | return; |
6985 | ||
0d1e0e78 | 6986 | if (options->flags.quick && options->skip_stat_unmatch && |
d2d7fbe1 JK |
6987 | !diff_filespec_check_stat_unmatch(options->repo, p)) { |
6988 | diff_free_filespec_data(p->one); | |
6989 | diff_free_filespec_data(p->two); | |
f34b205f | 6990 | return; |
d2d7fbe1 | 6991 | } |
f34b205f | 6992 | |
0d1e0e78 | 6993 | options->flags.has_changes = 1; |
6973dcae JH |
6994 | } |
6995 | ||
fa7b2908 | 6996 | struct diff_filepair *diff_unmerge(struct diff_options *options, const char *path) |
6973dcae | 6997 | { |
76399c01 | 6998 | struct diff_filepair *pair; |
6973dcae | 6999 | struct diff_filespec *one, *two; |
cd676a51 JH |
7000 | |
7001 | if (options->prefix && | |
7002 | strncmp(path, options->prefix, options->prefix_length)) | |
76399c01 | 7003 | return NULL; |
cd676a51 | 7004 | |
6973dcae JH |
7005 | one = alloc_filespec(path); |
7006 | two = alloc_filespec(path); | |
76399c01 JH |
7007 | pair = diff_queue(&diff_queued_diff, one, two); |
7008 | pair->is_unmerged = 1; | |
7009 | return pair; | |
6973dcae | 7010 | } |
9cb92c39 | 7011 | |
b78ea5fc NTND |
7012 | static char *run_textconv(struct repository *r, |
7013 | const char *pgm, | |
7014 | struct diff_filespec *spec, | |
7015 | size_t *outsize) | |
9cb92c39 | 7016 | { |
479b0ae8 | 7017 | struct diff_tempfile *temp; |
d3180279 | 7018 | struct child_process child = CHILD_PROCESS_INIT; |
9cb92c39 | 7019 | struct strbuf buf = STRBUF_INIT; |
da1fbed3 | 7020 | int err = 0; |
9cb92c39 | 7021 | |
b78ea5fc | 7022 | temp = prepare_temp_file(r, spec->path, spec); |
7f14609e ÆAB |
7023 | strvec_push(&child.args, pgm); |
7024 | strvec_push(&child.args, temp->name); | |
9cb92c39 | 7025 | |
41a457e4 | 7026 | child.use_shell = 1; |
9cb92c39 | 7027 | child.out = -1; |
da1fbed3 | 7028 | if (start_command(&child)) { |
479b0ae8 | 7029 | remove_tempfile(); |
9cb92c39 JK |
7030 | return NULL; |
7031 | } | |
da1fbed3 JS |
7032 | |
7033 | if (strbuf_read(&buf, child.out, 0) < 0) | |
7034 | err = error("error reading from textconv command '%s'", pgm); | |
70d70999 | 7035 | close(child.out); |
da1fbed3 JS |
7036 | |
7037 | if (finish_command(&child) || err) { | |
7038 | strbuf_release(&buf); | |
7039 | remove_tempfile(); | |
7040 | return NULL; | |
7041 | } | |
479b0ae8 | 7042 | remove_tempfile(); |
9cb92c39 JK |
7043 | |
7044 | return strbuf_detach(&buf, outsize); | |
7045 | } | |
840383b2 | 7046 | |
6afaf807 NTND |
7047 | size_t fill_textconv(struct repository *r, |
7048 | struct userdiff_driver *driver, | |
a788d7d5 AB |
7049 | struct diff_filespec *df, |
7050 | char **outbuf) | |
840383b2 JK |
7051 | { |
7052 | size_t size; | |
7053 | ||
a64e6a44 | 7054 | if (!driver) { |
840383b2 JK |
7055 | if (!DIFF_FILE_VALID(df)) { |
7056 | *outbuf = ""; | |
7057 | return 0; | |
7058 | } | |
1c37e86a | 7059 | if (diff_populate_filespec(r, df, NULL)) |
840383b2 JK |
7060 | die("unable to read files to diff"); |
7061 | *outbuf = df->data; | |
7062 | return df->size; | |
7063 | } | |
7064 | ||
a64e6a44 | 7065 | if (!driver->textconv) |
033abf97 | 7066 | BUG("fill_textconv called with non-textconv driver"); |
a64e6a44 | 7067 | |
41c9560e | 7068 | if (driver->textconv_cache && df->oid_valid) { |
a0d12c44 | 7069 | *outbuf = notes_cache_get(driver->textconv_cache, |
569aa376 | 7070 | &df->oid, |
d9bae1a1 JK |
7071 | &size); |
7072 | if (*outbuf) | |
7073 | return size; | |
7074 | } | |
7075 | ||
b78ea5fc | 7076 | *outbuf = run_textconv(r, driver->textconv, df, &size); |
840383b2 JK |
7077 | if (!*outbuf) |
7078 | die("unable to read files to diff"); | |
d9bae1a1 | 7079 | |
41c9560e | 7080 | if (driver->textconv_cache && df->oid_valid) { |
d9bae1a1 | 7081 | /* ignore errors, as we might be in a readonly repository */ |
569aa376 | 7082 | notes_cache_put(driver->textconv_cache, &df->oid, *outbuf, |
d9bae1a1 JK |
7083 | size); |
7084 | /* | |
7085 | * we could save up changes and flush them all at the end, | |
7086 | * but we would need an extra call after all diffing is done. | |
7087 | * Since generating a cache entry is the slow path anyway, | |
7088 | * this extra overhead probably isn't a big deal. | |
7089 | */ | |
7090 | notes_cache_write(driver->textconv_cache); | |
7091 | } | |
7092 | ||
840383b2 JK |
7093 | return size; |
7094 | } | |
4914c962 | 7095 | |
6afaf807 NTND |
7096 | int textconv_object(struct repository *r, |
7097 | const char *path, | |
3a35cb2e JS |
7098 | unsigned mode, |
7099 | const struct object_id *oid, | |
7100 | int oid_valid, | |
7101 | char **buf, | |
7102 | unsigned long *buf_size) | |
7103 | { | |
7104 | struct diff_filespec *df; | |
7105 | struct userdiff_driver *textconv; | |
7106 | ||
7107 | df = alloc_filespec(path); | |
a6f38c10 | 7108 | fill_filespec(df, oid, oid_valid, mode); |
bd7ad45b | 7109 | textconv = get_textconv(r, df); |
3a35cb2e JS |
7110 | if (!textconv) { |
7111 | free_filespec(df); | |
7112 | return 0; | |
7113 | } | |
7114 | ||
6afaf807 | 7115 | *buf_size = fill_textconv(r, textconv, df, buf); |
3a35cb2e JS |
7116 | free_filespec(df); |
7117 | return 1; | |
7118 | } | |
7119 | ||
4914c962 NTND |
7120 | void setup_diff_pager(struct diff_options *opt) |
7121 | { | |
7122 | /* | |
7123 | * If the user asked for our exit code, then either they want --quiet | |
7124 | * or --exit-code. We should definitely not bother with a pager in the | |
7125 | * former case, as we will generate no output. Since we still properly | |
7126 | * report our exit code even when a pager is run, we _could_ run a | |
7127 | * pager with --exit-code. But since we have not done so historically, | |
7128 | * and because it is easy to find people oneline advising "git diff | |
7129 | * --exit-code" in hooks and other scripts, we do not do so. | |
7130 | */ | |
0d1e0e78 | 7131 | if (!opt->flags.exit_with_status && |
4914c962 NTND |
7132 | check_pager_config("diff") != 0) |
7133 | setup_pager(); | |
7134 | } |