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Commit | Line | Data |
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6973dcae JH |
1 | /* |
2 | * Copyright (C) 2005 Junio C Hamano | |
3 | */ | |
6973dcae JH |
4 | #include "cache.h" |
5 | #include "quote.h" | |
6 | #include "diff.h" | |
7 | #include "diffcore.h" | |
051308f6 | 8 | #include "delta.h" |
6973dcae | 9 | #include "xdiff-interface.h" |
7c92fe0e | 10 | #include "color.h" |
8c701249 | 11 | #include "attr.h" |
d5535ec7 | 12 | #include "run-command.h" |
23707811 | 13 | #include "utf8.h" |
be58e70d | 14 | #include "userdiff.h" |
4a16d072 | 15 | #include "sigchain.h" |
6973dcae | 16 | |
1510fea7 SP |
17 | #ifdef NO_FAST_WORKING_DIRECTORY |
18 | #define FAST_WORKING_DIRECTORY 0 | |
19 | #else | |
20 | #define FAST_WORKING_DIRECTORY 1 | |
21 | #endif | |
22 | ||
96f1e58f | 23 | static int diff_detect_rename_default; |
50705915 | 24 | static int diff_rename_limit_default = 200; |
a624eaa7 | 25 | static int diff_suppress_blank_empty; |
6b2f2d98 | 26 | int diff_use_color_default = -1; |
98a4d87b | 27 | static const char *diff_word_regex_cfg; |
cbe02100 | 28 | static const char *external_diff_cmd_cfg; |
aecbf914 | 29 | int diff_auto_refresh_index = 1; |
a5a818ee | 30 | static int diff_mnemonic_prefix; |
6973dcae | 31 | |
7c92fe0e | 32 | static char diff_colors[][COLOR_MAXLEN] = { |
dc6ebd4c AL |
33 | GIT_COLOR_RESET, |
34 | GIT_COLOR_NORMAL, /* PLAIN */ | |
35 | GIT_COLOR_BOLD, /* METAINFO */ | |
36 | GIT_COLOR_CYAN, /* FRAGINFO */ | |
37 | GIT_COLOR_RED, /* OLD */ | |
38 | GIT_COLOR_GREEN, /* NEW */ | |
39 | GIT_COLOR_YELLOW, /* COMMIT */ | |
40 | GIT_COLOR_BG_RED, /* WHITESPACE */ | |
cd112cef JS |
41 | }; |
42 | ||
9cb92c39 JK |
43 | static void diff_filespec_load_driver(struct diff_filespec *one); |
44 | static char *run_textconv(const char *, struct diff_filespec *, size_t *); | |
45 | ||
801235c5 JH |
46 | static int parse_diff_color_slot(const char *var, int ofs) |
47 | { | |
48 | if (!strcasecmp(var+ofs, "plain")) | |
49 | return DIFF_PLAIN; | |
50 | if (!strcasecmp(var+ofs, "meta")) | |
51 | return DIFF_METAINFO; | |
52 | if (!strcasecmp(var+ofs, "frag")) | |
53 | return DIFF_FRAGINFO; | |
54 | if (!strcasecmp(var+ofs, "old")) | |
55 | return DIFF_FILE_OLD; | |
56 | if (!strcasecmp(var+ofs, "new")) | |
57 | return DIFF_FILE_NEW; | |
ce436973 JK |
58 | if (!strcasecmp(var+ofs, "commit")) |
59 | return DIFF_COMMIT; | |
448c3ef1 JH |
60 | if (!strcasecmp(var+ofs, "whitespace")) |
61 | return DIFF_WHITESPACE; | |
801235c5 JH |
62 | die("bad config variable '%s'", var); |
63 | } | |
64 | ||
cced5fbc LT |
65 | static int git_config_rename(const char *var, const char *value) |
66 | { | |
67 | if (!value) | |
68 | return DIFF_DETECT_RENAME; | |
69 | if (!strcasecmp(value, "copies") || !strcasecmp(value, "copy")) | |
70 | return DIFF_DETECT_COPY; | |
71 | return git_config_bool(var,value) ? DIFF_DETECT_RENAME : 0; | |
72 | } | |
73 | ||
83ad63cf JH |
74 | /* |
75 | * These are to give UI layer defaults. | |
76 | * The core-level commands such as git-diff-files should | |
77 | * never be affected by the setting of diff.renames | |
78 | * the user happens to have in the configuration file. | |
79 | */ | |
ef90d6d4 | 80 | int git_diff_ui_config(const char *var, const char *value, void *cb) |
801235c5 | 81 | { |
a159ca0c | 82 | if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) { |
0f6f5a40 | 83 | diff_use_color_default = git_config_colorbool(var, value, -1); |
801235c5 JH |
84 | return 0; |
85 | } | |
b68ea12e | 86 | if (!strcmp(var, "diff.renames")) { |
cced5fbc | 87 | diff_detect_rename_default = git_config_rename(var, value); |
b68ea12e EW |
88 | return 0; |
89 | } | |
aecbf914 JH |
90 | if (!strcmp(var, "diff.autorefreshindex")) { |
91 | diff_auto_refresh_index = git_config_bool(var, value); | |
92 | return 0; | |
93 | } | |
a5a818ee JH |
94 | if (!strcmp(var, "diff.mnemonicprefix")) { |
95 | diff_mnemonic_prefix = git_config_bool(var, value); | |
96 | return 0; | |
97 | } | |
daec808c BH |
98 | if (!strcmp(var, "diff.external")) |
99 | return git_config_string(&external_diff_cmd_cfg, var, value); | |
98a4d87b BSSJ |
100 | if (!strcmp(var, "diff.wordregex")) |
101 | return git_config_string(&diff_word_regex_cfg, var, value); | |
f1af60bd | 102 | |
ef90d6d4 | 103 | return git_diff_basic_config(var, value, cb); |
9a1805a8 JK |
104 | } |
105 | ||
ef90d6d4 | 106 | int git_diff_basic_config(const char *var, const char *value, void *cb) |
9a1805a8 | 107 | { |
2b6ca6df LT |
108 | if (!strcmp(var, "diff.renamelimit")) { |
109 | diff_rename_limit_default = git_config_int(var, value); | |
110 | return 0; | |
111 | } | |
112 | ||
c7534ef4 JK |
113 | switch (userdiff_config(var, value)) { |
114 | case 0: break; | |
115 | case -1: return -1; | |
116 | default: return 0; | |
117 | } | |
118 | ||
1968d77d | 119 | if (!prefixcmp(var, "diff.color.") || !prefixcmp(var, "color.diff.")) { |
801235c5 | 120 | int slot = parse_diff_color_slot(var, 11); |
64f30e94 JH |
121 | if (!value) |
122 | return config_error_nonbool(var); | |
7c92fe0e | 123 | color_parse(value, var, diff_colors[slot]); |
801235c5 JH |
124 | return 0; |
125 | } | |
f1af60bd | 126 | |
a624eaa7 | 127 | /* like GNU diff's --suppress-blank-empty option */ |
950db879 JS |
128 | if (!strcmp(var, "diff.suppressblankempty") || |
129 | /* for backwards compatibility */ | |
130 | !strcmp(var, "diff.suppress-blank-empty")) { | |
a624eaa7 JM |
131 | diff_suppress_blank_empty = git_config_bool(var, value); |
132 | return 0; | |
133 | } | |
134 | ||
ef90d6d4 | 135 | return git_color_default_config(var, value, cb); |
801235c5 JH |
136 | } |
137 | ||
6973dcae JH |
138 | static char *quote_two(const char *one, const char *two) |
139 | { | |
140 | int need_one = quote_c_style(one, NULL, NULL, 1); | |
141 | int need_two = quote_c_style(two, NULL, NULL, 1); | |
f285a2d7 | 142 | struct strbuf res = STRBUF_INIT; |
6973dcae JH |
143 | |
144 | if (need_one + need_two) { | |
663af342 PH |
145 | strbuf_addch(&res, '"'); |
146 | quote_c_style(one, &res, NULL, 1); | |
147 | quote_c_style(two, &res, NULL, 1); | |
148 | strbuf_addch(&res, '"'); | |
149 | } else { | |
150 | strbuf_addstr(&res, one); | |
151 | strbuf_addstr(&res, two); | |
6973dcae | 152 | } |
b315c5c0 | 153 | return strbuf_detach(&res, NULL); |
6973dcae JH |
154 | } |
155 | ||
156 | static const char *external_diff(void) | |
157 | { | |
158 | static const char *external_diff_cmd = NULL; | |
159 | static int done_preparing = 0; | |
160 | ||
161 | if (done_preparing) | |
162 | return external_diff_cmd; | |
163 | external_diff_cmd = getenv("GIT_EXTERNAL_DIFF"); | |
cbe02100 JS |
164 | if (!external_diff_cmd) |
165 | external_diff_cmd = external_diff_cmd_cfg; | |
6973dcae JH |
166 | done_preparing = 1; |
167 | return external_diff_cmd; | |
168 | } | |
169 | ||
6973dcae JH |
170 | static struct diff_tempfile { |
171 | const char *name; /* filename external diff should read from */ | |
172 | char hex[41]; | |
173 | char mode[10]; | |
1472966c | 174 | char tmp_path[PATH_MAX]; |
6973dcae JH |
175 | } diff_temp[2]; |
176 | ||
479b0ae8 JK |
177 | static struct diff_tempfile *claim_diff_tempfile(void) { |
178 | int i; | |
179 | for (i = 0; i < ARRAY_SIZE(diff_temp); i++) | |
180 | if (!diff_temp[i].name) | |
181 | return diff_temp + i; | |
182 | die("BUG: diff is failing to clean up its tempfiles"); | |
183 | } | |
184 | ||
185 | static int remove_tempfile_installed; | |
186 | ||
187 | static void remove_tempfile(void) | |
188 | { | |
189 | int i; | |
a8344abe NR |
190 | for (i = 0; i < ARRAY_SIZE(diff_temp); i++) { |
191 | if (diff_temp[i].name == diff_temp[i].tmp_path) | |
691f1a28 | 192 | unlink_or_warn(diff_temp[i].name); |
a8344abe NR |
193 | diff_temp[i].name = NULL; |
194 | } | |
479b0ae8 JK |
195 | } |
196 | ||
197 | static void remove_tempfile_on_signal(int signo) | |
198 | { | |
199 | remove_tempfile(); | |
4a16d072 | 200 | sigchain_pop(signo); |
479b0ae8 JK |
201 | raise(signo); |
202 | } | |
203 | ||
6973dcae JH |
204 | static int count_lines(const char *data, int size) |
205 | { | |
206 | int count, ch, completely_empty = 1, nl_just_seen = 0; | |
207 | count = 0; | |
208 | while (0 < size--) { | |
209 | ch = *data++; | |
210 | if (ch == '\n') { | |
211 | count++; | |
212 | nl_just_seen = 1; | |
213 | completely_empty = 0; | |
214 | } | |
215 | else { | |
216 | nl_just_seen = 0; | |
217 | completely_empty = 0; | |
218 | } | |
219 | } | |
220 | if (completely_empty) | |
221 | return 0; | |
222 | if (!nl_just_seen) | |
223 | count++; /* no trailing newline */ | |
224 | return count; | |
225 | } | |
226 | ||
c0c77734 | 227 | static void print_line_count(FILE *file, int count) |
6973dcae JH |
228 | { |
229 | switch (count) { | |
230 | case 0: | |
c0c77734 | 231 | fprintf(file, "0,0"); |
6973dcae JH |
232 | break; |
233 | case 1: | |
c0c77734 | 234 | fprintf(file, "1"); |
6973dcae JH |
235 | break; |
236 | default: | |
c0c77734 | 237 | fprintf(file, "1,%d", count); |
6973dcae JH |
238 | break; |
239 | } | |
240 | } | |
241 | ||
c0c77734 DB |
242 | static void copy_file_with_prefix(FILE *file, |
243 | int prefix, const char *data, int size, | |
1468bd47 | 244 | const char *set, const char *reset) |
6973dcae JH |
245 | { |
246 | int ch, nl_just_seen = 1; | |
247 | while (0 < size--) { | |
248 | ch = *data++; | |
13e36ec5 | 249 | if (nl_just_seen) { |
c0c77734 DB |
250 | fputs(set, file); |
251 | putc(prefix, file); | |
13e36ec5 JS |
252 | } |
253 | if (ch == '\n') { | |
6973dcae | 254 | nl_just_seen = 1; |
c0c77734 | 255 | fputs(reset, file); |
13e36ec5 | 256 | } else |
6973dcae | 257 | nl_just_seen = 0; |
c0c77734 | 258 | putc(ch, file); |
6973dcae JH |
259 | } |
260 | if (!nl_just_seen) | |
c0c77734 | 261 | fprintf(file, "%s\n\\ No newline at end of file\n", reset); |
6973dcae JH |
262 | } |
263 | ||
264 | static void emit_rewrite_diff(const char *name_a, | |
265 | const char *name_b, | |
266 | struct diff_filespec *one, | |
13e36ec5 | 267 | struct diff_filespec *two, |
3aa1f7ca JK |
268 | const char *textconv_one, |
269 | const char *textconv_two, | |
eab9a40b | 270 | struct diff_options *o) |
6973dcae JH |
271 | { |
272 | int lc_a, lc_b; | |
eab9a40b | 273 | int color_diff = DIFF_OPT_TST(o, COLOR_DIFF); |
1a9eb3b9 | 274 | const char *name_a_tab, *name_b_tab; |
13e36ec5 JS |
275 | const char *metainfo = diff_get_color(color_diff, DIFF_METAINFO); |
276 | const char *fraginfo = diff_get_color(color_diff, DIFF_FRAGINFO); | |
277 | const char *old = diff_get_color(color_diff, DIFF_FILE_OLD); | |
278 | const char *new = diff_get_color(color_diff, DIFF_FILE_NEW); | |
279 | const char *reset = diff_get_color(color_diff, DIFF_RESET); | |
d5625091 | 280 | static struct strbuf a_name = STRBUF_INIT, b_name = STRBUF_INIT; |
a5a818ee | 281 | const char *a_prefix, *b_prefix; |
3aa1f7ca JK |
282 | const char *data_one, *data_two; |
283 | size_t size_one, size_two; | |
a5a818ee JH |
284 | |
285 | if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) { | |
286 | a_prefix = o->b_prefix; | |
287 | b_prefix = o->a_prefix; | |
288 | } else { | |
289 | a_prefix = o->a_prefix; | |
290 | b_prefix = o->b_prefix; | |
291 | } | |
1a9eb3b9 | 292 | |
8a13becc JH |
293 | name_a += (*name_a == '/'); |
294 | name_b += (*name_b == '/'); | |
1a9eb3b9 JH |
295 | name_a_tab = strchr(name_a, ' ') ? "\t" : ""; |
296 | name_b_tab = strchr(name_b, ' ') ? "\t" : ""; | |
297 | ||
d5625091 JH |
298 | strbuf_reset(&a_name); |
299 | strbuf_reset(&b_name); | |
a5a818ee JH |
300 | quote_two_c_style(&a_name, a_prefix, name_a, 0); |
301 | quote_two_c_style(&b_name, b_prefix, name_b, 0); | |
d5625091 | 302 | |
6973dcae JH |
303 | diff_populate_filespec(one, 0); |
304 | diff_populate_filespec(two, 0); | |
3aa1f7ca JK |
305 | if (textconv_one) { |
306 | data_one = run_textconv(textconv_one, one, &size_one); | |
307 | if (!data_one) | |
308 | die("unable to read files to diff"); | |
309 | } | |
310 | else { | |
311 | data_one = one->data; | |
312 | size_one = one->size; | |
313 | } | |
314 | if (textconv_two) { | |
315 | data_two = run_textconv(textconv_two, two, &size_two); | |
316 | if (!data_two) | |
317 | die("unable to read files to diff"); | |
318 | } | |
319 | else { | |
320 | data_two = two->data; | |
321 | size_two = two->size; | |
322 | } | |
323 | ||
324 | lc_a = count_lines(data_one, size_one); | |
325 | lc_b = count_lines(data_two, size_two); | |
c0c77734 DB |
326 | fprintf(o->file, |
327 | "%s--- %s%s%s\n%s+++ %s%s%s\n%s@@ -", | |
328 | metainfo, a_name.buf, name_a_tab, reset, | |
329 | metainfo, b_name.buf, name_b_tab, reset, fraginfo); | |
330 | print_line_count(o->file, lc_a); | |
331 | fprintf(o->file, " +"); | |
332 | print_line_count(o->file, lc_b); | |
333 | fprintf(o->file, " @@%s\n", reset); | |
6973dcae | 334 | if (lc_a) |
3aa1f7ca | 335 | copy_file_with_prefix(o->file, '-', data_one, size_one, old, reset); |
6973dcae | 336 | if (lc_b) |
3aa1f7ca | 337 | copy_file_with_prefix(o->file, '+', data_two, size_two, new, reset); |
6973dcae JH |
338 | } |
339 | ||
340 | static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one) | |
341 | { | |
342 | if (!DIFF_FILE_VALID(one)) { | |
d2543b8e | 343 | mf->ptr = (char *)""; /* does not matter */ |
6973dcae JH |
344 | mf->size = 0; |
345 | return 0; | |
346 | } | |
347 | else if (diff_populate_filespec(one, 0)) | |
348 | return -1; | |
9cb92c39 | 349 | |
04427ac8 JK |
350 | mf->ptr = one->data; |
351 | mf->size = one->size; | |
6973dcae JH |
352 | return 0; |
353 | } | |
354 | ||
f59a59e2 JS |
355 | struct diff_words_buffer { |
356 | mmfile_t text; | |
357 | long alloc; | |
2e5d2003 JS |
358 | struct diff_words_orig { |
359 | const char *begin, *end; | |
360 | } *orig; | |
361 | int orig_nr, orig_alloc; | |
f59a59e2 JS |
362 | }; |
363 | ||
364 | static void diff_words_append(char *line, unsigned long len, | |
365 | struct diff_words_buffer *buffer) | |
366 | { | |
23c1575f | 367 | ALLOC_GROW(buffer->text.ptr, buffer->text.size + len, buffer->alloc); |
f59a59e2 JS |
368 | line++; |
369 | len--; | |
370 | memcpy(buffer->text.ptr + buffer->text.size, line, len); | |
371 | buffer->text.size += len; | |
2b6a5417 | 372 | buffer->text.ptr[buffer->text.size] = '\0'; |
f59a59e2 JS |
373 | } |
374 | ||
375 | struct diff_words_data { | |
f59a59e2 | 376 | struct diff_words_buffer minus, plus; |
2e5d2003 | 377 | const char *current_plus; |
c0c77734 | 378 | FILE *file; |
2b6a5417 | 379 | regex_t *word_regex; |
f59a59e2 JS |
380 | }; |
381 | ||
f59a59e2 | 382 | static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len) |
f59a59e2 | 383 | { |
f59a59e2 | 384 | struct diff_words_data *diff_words = priv; |
2e5d2003 JS |
385 | int minus_first, minus_len, plus_first, plus_len; |
386 | const char *minus_begin, *minus_end, *plus_begin, *plus_end; | |
f59a59e2 | 387 | |
2e5d2003 JS |
388 | if (line[0] != '@' || parse_hunk_header(line, len, |
389 | &minus_first, &minus_len, &plus_first, &plus_len)) | |
f59a59e2 JS |
390 | return; |
391 | ||
2e5d2003 JS |
392 | /* POSIX requires that first be decremented by one if len == 0... */ |
393 | if (minus_len) { | |
394 | minus_begin = diff_words->minus.orig[minus_first].begin; | |
395 | minus_end = | |
396 | diff_words->minus.orig[minus_first + minus_len - 1].end; | |
397 | } else | |
398 | minus_begin = minus_end = | |
399 | diff_words->minus.orig[minus_first].end; | |
400 | ||
401 | if (plus_len) { | |
402 | plus_begin = diff_words->plus.orig[plus_first].begin; | |
403 | plus_end = diff_words->plus.orig[plus_first + plus_len - 1].end; | |
404 | } else | |
405 | plus_begin = plus_end = diff_words->plus.orig[plus_first].end; | |
406 | ||
407 | if (diff_words->current_plus != plus_begin) | |
408 | fwrite(diff_words->current_plus, | |
409 | plus_begin - diff_words->current_plus, 1, | |
410 | diff_words->file); | |
411 | if (minus_begin != minus_end) | |
412 | color_fwrite_lines(diff_words->file, | |
413 | diff_get_color(1, DIFF_FILE_OLD), | |
414 | minus_end - minus_begin, minus_begin); | |
415 | if (plus_begin != plus_end) | |
416 | color_fwrite_lines(diff_words->file, | |
417 | diff_get_color(1, DIFF_FILE_NEW), | |
418 | plus_end - plus_begin, plus_begin); | |
419 | ||
420 | diff_words->current_plus = plus_end; | |
f59a59e2 JS |
421 | } |
422 | ||
2b6a5417 JS |
423 | /* This function starts looking at *begin, and returns 0 iff a word was found. */ |
424 | static int find_word_boundaries(mmfile_t *buffer, regex_t *word_regex, | |
425 | int *begin, int *end) | |
426 | { | |
427 | if (word_regex && *begin < buffer->size) { | |
428 | regmatch_t match[1]; | |
429 | if (!regexec(word_regex, buffer->ptr + *begin, 1, match, 0)) { | |
430 | char *p = memchr(buffer->ptr + *begin + match[0].rm_so, | |
431 | '\n', match[0].rm_eo - match[0].rm_so); | |
432 | *end = p ? p - buffer->ptr : match[0].rm_eo + *begin; | |
433 | *begin += match[0].rm_so; | |
434 | return *begin >= *end; | |
435 | } | |
436 | return -1; | |
f59a59e2 JS |
437 | } |
438 | ||
2b6a5417 JS |
439 | /* find the next word */ |
440 | while (*begin < buffer->size && isspace(buffer->ptr[*begin])) | |
441 | (*begin)++; | |
442 | if (*begin >= buffer->size) | |
443 | return -1; | |
f59a59e2 | 444 | |
2b6a5417 JS |
445 | /* find the end of the word */ |
446 | *end = *begin + 1; | |
447 | while (*end < buffer->size && !isspace(buffer->ptr[*end])) | |
448 | (*end)++; | |
449 | ||
450 | return 0; | |
f59a59e2 JS |
451 | } |
452 | ||
23c1575f | 453 | /* |
2e5d2003 JS |
454 | * This function splits the words in buffer->text, stores the list with |
455 | * newline separator into out, and saves the offsets of the original words | |
456 | * in buffer->orig. | |
23c1575f | 457 | */ |
2b6a5417 JS |
458 | static void diff_words_fill(struct diff_words_buffer *buffer, mmfile_t *out, |
459 | regex_t *word_regex) | |
f59a59e2 | 460 | { |
2e5d2003 | 461 | int i, j; |
2b6a5417 | 462 | long alloc = 0; |
f59a59e2 | 463 | |
2e5d2003 | 464 | out->size = 0; |
2b6a5417 | 465 | out->ptr = NULL; |
f59a59e2 | 466 | |
2e5d2003 JS |
467 | /* fake an empty "0th" word */ |
468 | ALLOC_GROW(buffer->orig, 1, buffer->orig_alloc); | |
469 | buffer->orig[0].begin = buffer->orig[0].end = buffer->text.ptr; | |
470 | buffer->orig_nr = 1; | |
471 | ||
472 | for (i = 0; i < buffer->text.size; i++) { | |
2b6a5417 JS |
473 | if (find_word_boundaries(&buffer->text, word_regex, &i, &j)) |
474 | return; | |
2e5d2003 JS |
475 | |
476 | /* store original boundaries */ | |
477 | ALLOC_GROW(buffer->orig, buffer->orig_nr + 1, | |
478 | buffer->orig_alloc); | |
479 | buffer->orig[buffer->orig_nr].begin = buffer->text.ptr + i; | |
480 | buffer->orig[buffer->orig_nr].end = buffer->text.ptr + j; | |
481 | buffer->orig_nr++; | |
482 | ||
483 | /* store one word */ | |
2b6a5417 | 484 | ALLOC_GROW(out->ptr, out->size + j - i + 1, alloc); |
2e5d2003 JS |
485 | memcpy(out->ptr + out->size, buffer->text.ptr + i, j - i); |
486 | out->ptr[out->size + j - i] = '\n'; | |
487 | out->size += j - i + 1; | |
488 | ||
489 | i = j - 1; | |
f59a59e2 JS |
490 | } |
491 | } | |
492 | ||
493 | /* this executes the word diff on the accumulated buffers */ | |
494 | static void diff_words_show(struct diff_words_data *diff_words) | |
495 | { | |
496 | xpparam_t xpp; | |
497 | xdemitconf_t xecfg; | |
498 | xdemitcb_t ecb; | |
499 | mmfile_t minus, plus; | |
f59a59e2 | 500 | |
2e5d2003 JS |
501 | /* special case: only removal */ |
502 | if (!diff_words->plus.text.size) { | |
503 | color_fwrite_lines(diff_words->file, | |
504 | diff_get_color(1, DIFF_FILE_OLD), | |
505 | diff_words->minus.text.size, diff_words->minus.text.ptr); | |
506 | diff_words->minus.text.size = 0; | |
507 | return; | |
508 | } | |
509 | ||
510 | diff_words->current_plus = diff_words->plus.text.ptr; | |
f59a59e2 | 511 | |
9ccd0a88 | 512 | memset(&xpp, 0, sizeof(xpp)); |
30b25010 | 513 | memset(&xecfg, 0, sizeof(xecfg)); |
2b6a5417 JS |
514 | diff_words_fill(&diff_words->minus, &minus, diff_words->word_regex); |
515 | diff_words_fill(&diff_words->plus, &plus, diff_words->word_regex); | |
f59a59e2 | 516 | xpp.flags = XDF_NEED_MINIMAL; |
2b6a5417 | 517 | /* as only the hunk header will be parsed, we need a 0-context */ |
2e5d2003 | 518 | xecfg.ctxlen = 0; |
8a3f524b JH |
519 | xdi_diff_outf(&minus, &plus, fn_out_diff_words_aux, diff_words, |
520 | &xpp, &xecfg, &ecb); | |
f59a59e2 JS |
521 | free(minus.ptr); |
522 | free(plus.ptr); | |
2e5d2003 JS |
523 | if (diff_words->current_plus != diff_words->plus.text.ptr + |
524 | diff_words->plus.text.size) | |
525 | fwrite(diff_words->current_plus, | |
526 | diff_words->plus.text.ptr + diff_words->plus.text.size | |
527 | - diff_words->current_plus, 1, | |
528 | diff_words->file); | |
f59a59e2 | 529 | diff_words->minus.text.size = diff_words->plus.text.size = 0; |
f59a59e2 JS |
530 | } |
531 | ||
23707811 JH |
532 | typedef unsigned long (*sane_truncate_fn)(char *line, unsigned long len); |
533 | ||
6973dcae | 534 | struct emit_callback { |
cd112cef | 535 | int nparents, color_diff; |
cf1b7869 | 536 | unsigned ws_rule; |
23707811 | 537 | sane_truncate_fn truncate; |
6973dcae | 538 | const char **label_path; |
f59a59e2 | 539 | struct diff_words_data *diff_words; |
34a5e1a2 | 540 | int *found_changesp; |
c0c77734 | 541 | FILE *file; |
6973dcae JH |
542 | }; |
543 | ||
f59a59e2 JS |
544 | static void free_diff_words_data(struct emit_callback *ecbdata) |
545 | { | |
546 | if (ecbdata->diff_words) { | |
547 | /* flush buffers */ | |
548 | if (ecbdata->diff_words->minus.text.size || | |
549 | ecbdata->diff_words->plus.text.size) | |
550 | diff_words_show(ecbdata->diff_words); | |
551 | ||
8e0f7003 | 552 | free (ecbdata->diff_words->minus.text.ptr); |
2e5d2003 | 553 | free (ecbdata->diff_words->minus.orig); |
8e0f7003 | 554 | free (ecbdata->diff_words->plus.text.ptr); |
2e5d2003 | 555 | free (ecbdata->diff_words->plus.orig); |
2b6a5417 | 556 | free(ecbdata->diff_words->word_regex); |
f59a59e2 JS |
557 | free(ecbdata->diff_words); |
558 | ecbdata->diff_words = NULL; | |
559 | } | |
560 | } | |
561 | ||
ce436973 | 562 | const char *diff_get_color(int diff_use_color, enum color_diff ix) |
cd112cef JS |
563 | { |
564 | if (diff_use_color) | |
50f575fc LT |
565 | return diff_colors[ix]; |
566 | return ""; | |
cd112cef JS |
567 | } |
568 | ||
c0c77734 | 569 | static void emit_line(FILE *file, const char *set, const char *reset, const char *line, int len) |
448c3ef1 | 570 | { |
39280970 JH |
571 | int has_trailing_newline, has_trailing_carriage_return; |
572 | ||
573 | has_trailing_newline = (len > 0 && line[len-1] == '\n'); | |
4afbcab9 | 574 | if (has_trailing_newline) |
06ff64ae | 575 | len--; |
39280970 JH |
576 | has_trailing_carriage_return = (len > 0 && line[len-1] == '\r'); |
577 | if (has_trailing_carriage_return) | |
578 | len--; | |
06ff64ae | 579 | |
c0c77734 DB |
580 | fputs(set, file); |
581 | fwrite(line, len, 1, file); | |
582 | fputs(reset, file); | |
39280970 JH |
583 | if (has_trailing_carriage_return) |
584 | fputc('\r', file); | |
4afbcab9 JH |
585 | if (has_trailing_newline) |
586 | fputc('\n', file); | |
448c3ef1 JH |
587 | } |
588 | ||
c5a8c3ec JS |
589 | static void emit_add_line(const char *reset, struct emit_callback *ecbdata, const char *line, int len) |
590 | { | |
591 | const char *ws = diff_get_color(ecbdata->color_diff, DIFF_WHITESPACE); | |
592 | const char *set = diff_get_color(ecbdata->color_diff, DIFF_FILE_NEW); | |
593 | ||
594 | if (!*ws) | |
c0c77734 | 595 | emit_line(ecbdata->file, set, reset, line, len); |
c1795bb0 WC |
596 | else { |
597 | /* Emit just the prefix, then the rest. */ | |
c0c77734 | 598 | emit_line(ecbdata->file, set, reset, line, ecbdata->nparents); |
8f8841e9 JH |
599 | ws_check_emit(line + ecbdata->nparents, |
600 | len - ecbdata->nparents, ecbdata->ws_rule, | |
601 | ecbdata->file, set, reset, ws); | |
c1795bb0 | 602 | } |
c5a8c3ec JS |
603 | } |
604 | ||
23707811 JH |
605 | static unsigned long sane_truncate_line(struct emit_callback *ecb, char *line, unsigned long len) |
606 | { | |
607 | const char *cp; | |
608 | unsigned long allot; | |
609 | size_t l = len; | |
610 | ||
611 | if (ecb->truncate) | |
612 | return ecb->truncate(line, len); | |
613 | cp = line; | |
614 | allot = l; | |
615 | while (0 < l) { | |
616 | (void) utf8_width(&cp, &l); | |
617 | if (!cp) | |
618 | break; /* truncated in the middle? */ | |
619 | } | |
620 | return allot - l; | |
621 | } | |
622 | ||
cd112cef | 623 | static void fn_out_consume(void *priv, char *line, unsigned long len) |
6973dcae JH |
624 | { |
625 | int i; | |
448c3ef1 | 626 | int color; |
6973dcae | 627 | struct emit_callback *ecbdata = priv; |
472ca780 JK |
628 | const char *meta = diff_get_color(ecbdata->color_diff, DIFF_METAINFO); |
629 | const char *plain = diff_get_color(ecbdata->color_diff, DIFF_PLAIN); | |
ce436973 | 630 | const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET); |
6973dcae | 631 | |
34a5e1a2 JS |
632 | *(ecbdata->found_changesp) = 1; |
633 | ||
6973dcae | 634 | if (ecbdata->label_path[0]) { |
1a9eb3b9 JH |
635 | const char *name_a_tab, *name_b_tab; |
636 | ||
637 | name_a_tab = strchr(ecbdata->label_path[0], ' ') ? "\t" : ""; | |
638 | name_b_tab = strchr(ecbdata->label_path[1], ' ') ? "\t" : ""; | |
639 | ||
c0c77734 DB |
640 | fprintf(ecbdata->file, "%s--- %s%s%s\n", |
641 | meta, ecbdata->label_path[0], reset, name_a_tab); | |
642 | fprintf(ecbdata->file, "%s+++ %s%s%s\n", | |
643 | meta, ecbdata->label_path[1], reset, name_b_tab); | |
6973dcae JH |
644 | ecbdata->label_path[0] = ecbdata->label_path[1] = NULL; |
645 | } | |
cd112cef | 646 | |
a624eaa7 JM |
647 | if (diff_suppress_blank_empty |
648 | && len == 2 && line[0] == ' ' && line[1] == '\n') { | |
649 | line[0] = '\n'; | |
650 | len = 1; | |
651 | } | |
652 | ||
cd112cef JS |
653 | /* This is not really necessary for now because |
654 | * this codepath only deals with two-way diffs. | |
655 | */ | |
656 | for (i = 0; i < len && line[i] == '@'; i++) | |
657 | ; | |
658 | if (2 <= i && i < len && line[i] == ' ') { | |
659 | ecbdata->nparents = i - 1; | |
23707811 | 660 | len = sane_truncate_line(ecbdata, line, len); |
c0c77734 DB |
661 | emit_line(ecbdata->file, |
662 | diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO), | |
448c3ef1 | 663 | reset, line, len); |
23707811 | 664 | if (line[len-1] != '\n') |
c0c77734 | 665 | putc('\n', ecbdata->file); |
448c3ef1 | 666 | return; |
cd112cef | 667 | } |
448c3ef1 JH |
668 | |
669 | if (len < ecbdata->nparents) { | |
c0c77734 | 670 | emit_line(ecbdata->file, reset, reset, line, len); |
448c3ef1 | 671 | return; |
cd112cef | 672 | } |
448c3ef1 JH |
673 | |
674 | color = DIFF_PLAIN; | |
675 | if (ecbdata->diff_words && ecbdata->nparents != 1) | |
676 | /* fall back to normal diff */ | |
677 | free_diff_words_data(ecbdata); | |
678 | if (ecbdata->diff_words) { | |
679 | if (line[0] == '-') { | |
680 | diff_words_append(line, len, | |
681 | &ecbdata->diff_words->minus); | |
682 | return; | |
683 | } else if (line[0] == '+') { | |
684 | diff_words_append(line, len, | |
685 | &ecbdata->diff_words->plus); | |
686 | return; | |
687 | } | |
688 | if (ecbdata->diff_words->minus.text.size || | |
689 | ecbdata->diff_words->plus.text.size) | |
690 | diff_words_show(ecbdata->diff_words); | |
691 | line++; | |
50f575fc | 692 | len--; |
c0c77734 | 693 | emit_line(ecbdata->file, plain, reset, line, len); |
448c3ef1 JH |
694 | return; |
695 | } | |
696 | for (i = 0; i < ecbdata->nparents && len; i++) { | |
697 | if (line[i] == '-') | |
698 | color = DIFF_FILE_OLD; | |
699 | else if (line[i] == '+') | |
700 | color = DIFF_FILE_NEW; | |
701 | } | |
702 | ||
703 | if (color != DIFF_FILE_NEW) { | |
c0c77734 DB |
704 | emit_line(ecbdata->file, |
705 | diff_get_color(ecbdata->color_diff, color), | |
448c3ef1 JH |
706 | reset, line, len); |
707 | return; | |
708 | } | |
709 | emit_add_line(reset, ecbdata, line, len); | |
6973dcae JH |
710 | } |
711 | ||
712 | static char *pprint_rename(const char *a, const char *b) | |
713 | { | |
714 | const char *old = a; | |
715 | const char *new = b; | |
f285a2d7 | 716 | struct strbuf name = STRBUF_INIT; |
6973dcae JH |
717 | int pfx_length, sfx_length; |
718 | int len_a = strlen(a); | |
719 | int len_b = strlen(b); | |
663af342 | 720 | int a_midlen, b_midlen; |
e5bfbf9b AJ |
721 | int qlen_a = quote_c_style(a, NULL, NULL, 0); |
722 | int qlen_b = quote_c_style(b, NULL, NULL, 0); | |
723 | ||
724 | if (qlen_a || qlen_b) { | |
663af342 PH |
725 | quote_c_style(a, &name, NULL, 0); |
726 | strbuf_addstr(&name, " => "); | |
727 | quote_c_style(b, &name, NULL, 0); | |
b315c5c0 | 728 | return strbuf_detach(&name, NULL); |
e5bfbf9b | 729 | } |
6973dcae JH |
730 | |
731 | /* Find common prefix */ | |
732 | pfx_length = 0; | |
733 | while (*old && *new && *old == *new) { | |
734 | if (*old == '/') | |
735 | pfx_length = old - a + 1; | |
736 | old++; | |
737 | new++; | |
738 | } | |
739 | ||
740 | /* Find common suffix */ | |
741 | old = a + len_a; | |
742 | new = b + len_b; | |
743 | sfx_length = 0; | |
744 | while (a <= old && b <= new && *old == *new) { | |
745 | if (*old == '/') | |
746 | sfx_length = len_a - (old - a); | |
747 | old--; | |
748 | new--; | |
749 | } | |
750 | ||
751 | /* | |
752 | * pfx{mid-a => mid-b}sfx | |
753 | * {pfx-a => pfx-b}sfx | |
754 | * pfx{sfx-a => sfx-b} | |
755 | * name-a => name-b | |
756 | */ | |
663af342 PH |
757 | a_midlen = len_a - pfx_length - sfx_length; |
758 | b_midlen = len_b - pfx_length - sfx_length; | |
759 | if (a_midlen < 0) | |
760 | a_midlen = 0; | |
761 | if (b_midlen < 0) | |
762 | b_midlen = 0; | |
763 | ||
764 | strbuf_grow(&name, pfx_length + a_midlen + b_midlen + sfx_length + 7); | |
6973dcae | 765 | if (pfx_length + sfx_length) { |
663af342 PH |
766 | strbuf_add(&name, a, pfx_length); |
767 | strbuf_addch(&name, '{'); | |
6973dcae | 768 | } |
663af342 PH |
769 | strbuf_add(&name, a + pfx_length, a_midlen); |
770 | strbuf_addstr(&name, " => "); | |
771 | strbuf_add(&name, b + pfx_length, b_midlen); | |
772 | if (pfx_length + sfx_length) { | |
773 | strbuf_addch(&name, '}'); | |
774 | strbuf_add(&name, a + len_a - sfx_length, sfx_length); | |
6973dcae | 775 | } |
b315c5c0 | 776 | return strbuf_detach(&name, NULL); |
6973dcae JH |
777 | } |
778 | ||
779 | struct diffstat_t { | |
6973dcae JH |
780 | int nr; |
781 | int alloc; | |
782 | struct diffstat_file { | |
f604652e | 783 | char *from_name; |
6973dcae | 784 | char *name; |
f604652e | 785 | char *print_name; |
6973dcae JH |
786 | unsigned is_unmerged:1; |
787 | unsigned is_binary:1; | |
788 | unsigned is_renamed:1; | |
789 | unsigned int added, deleted; | |
790 | } **files; | |
791 | }; | |
792 | ||
793 | static struct diffstat_file *diffstat_add(struct diffstat_t *diffstat, | |
794 | const char *name_a, | |
795 | const char *name_b) | |
796 | { | |
797 | struct diffstat_file *x; | |
798 | x = xcalloc(sizeof (*x), 1); | |
799 | if (diffstat->nr == diffstat->alloc) { | |
800 | diffstat->alloc = alloc_nr(diffstat->alloc); | |
801 | diffstat->files = xrealloc(diffstat->files, | |
802 | diffstat->alloc * sizeof(x)); | |
803 | } | |
804 | diffstat->files[diffstat->nr++] = x; | |
805 | if (name_b) { | |
f604652e JH |
806 | x->from_name = xstrdup(name_a); |
807 | x->name = xstrdup(name_b); | |
6973dcae JH |
808 | x->is_renamed = 1; |
809 | } | |
f604652e JH |
810 | else { |
811 | x->from_name = NULL; | |
9befac47 | 812 | x->name = xstrdup(name_a); |
f604652e | 813 | } |
6973dcae JH |
814 | return x; |
815 | } | |
816 | ||
817 | static void diffstat_consume(void *priv, char *line, unsigned long len) | |
818 | { | |
819 | struct diffstat_t *diffstat = priv; | |
820 | struct diffstat_file *x = diffstat->files[diffstat->nr - 1]; | |
821 | ||
822 | if (line[0] == '+') | |
823 | x->added++; | |
824 | else if (line[0] == '-') | |
825 | x->deleted++; | |
826 | } | |
827 | ||
698ce6f8 | 828 | const char mime_boundary_leader[] = "------------"; |
6973dcae | 829 | |
a2540023 JH |
830 | static int scale_linear(int it, int width, int max_change) |
831 | { | |
832 | /* | |
3ed74e60 JS |
833 | * make sure that at least one '-' is printed if there were deletions, |
834 | * and likewise for '+'. | |
a2540023 | 835 | */ |
3ed74e60 JS |
836 | if (max_change < 2) |
837 | return it; | |
838 | return ((it - 1) * (width - 1) + max_change - 1) / (max_change - 1); | |
a2540023 JH |
839 | } |
840 | ||
c0c77734 | 841 | static void show_name(FILE *file, |
a408e0e6 | 842 | const char *prefix, const char *name, int len) |
a2540023 | 843 | { |
a408e0e6 | 844 | fprintf(file, " %s%-*s |", prefix, len, name); |
a2540023 JH |
845 | } |
846 | ||
c0c77734 | 847 | static void show_graph(FILE *file, char ch, int cnt, const char *set, const char *reset) |
a2540023 JH |
848 | { |
849 | if (cnt <= 0) | |
850 | return; | |
c0c77734 | 851 | fprintf(file, "%s", set); |
a2540023 | 852 | while (cnt--) |
c0c77734 DB |
853 | putc(ch, file); |
854 | fprintf(file, "%s", reset); | |
a2540023 JH |
855 | } |
856 | ||
f604652e JH |
857 | static void fill_print_name(struct diffstat_file *file) |
858 | { | |
859 | char *pname; | |
860 | ||
861 | if (file->print_name) | |
862 | return; | |
863 | ||
864 | if (!file->is_renamed) { | |
f285a2d7 | 865 | struct strbuf buf = STRBUF_INIT; |
f604652e JH |
866 | if (quote_c_style(file->name, &buf, NULL, 0)) { |
867 | pname = strbuf_detach(&buf, NULL); | |
868 | } else { | |
869 | pname = file->name; | |
870 | strbuf_release(&buf); | |
871 | } | |
872 | } else { | |
873 | pname = pprint_rename(file->from_name, file->name); | |
874 | } | |
875 | file->print_name = pname; | |
876 | } | |
877 | ||
4b25d091 | 878 | static void show_stats(struct diffstat_t *data, struct diff_options *options) |
6973dcae | 879 | { |
eb3a9dd3 | 880 | int i, len, add, del, adds = 0, dels = 0; |
a2540023 | 881 | int max_change = 0, max_len = 0; |
6973dcae | 882 | int total_files = data->nr; |
a2540023 | 883 | int width, name_width; |
785f7432 | 884 | const char *reset, *set, *add_c, *del_c; |
6973dcae JH |
885 | |
886 | if (data->nr == 0) | |
887 | return; | |
888 | ||
a2540023 JH |
889 | width = options->stat_width ? options->stat_width : 80; |
890 | name_width = options->stat_name_width ? options->stat_name_width : 50; | |
891 | ||
892 | /* Sanity: give at least 5 columns to the graph, | |
893 | * but leave at least 10 columns for the name. | |
894 | */ | |
861d1af3 OM |
895 | if (width < 25) |
896 | width = 25; | |
897 | if (name_width < 10) | |
898 | name_width = 10; | |
899 | else if (width < name_width + 15) | |
900 | name_width = width - 15; | |
a2540023 JH |
901 | |
902 | /* Find the longest filename and max number of changes */ | |
8f67f8ae PH |
903 | reset = diff_get_color_opt(options, DIFF_RESET); |
904 | set = diff_get_color_opt(options, DIFF_PLAIN); | |
905 | add_c = diff_get_color_opt(options, DIFF_FILE_NEW); | |
906 | del_c = diff_get_color_opt(options, DIFF_FILE_OLD); | |
785f7432 | 907 | |
6973dcae JH |
908 | for (i = 0; i < data->nr; i++) { |
909 | struct diffstat_file *file = data->files[i]; | |
a2540023 | 910 | int change = file->added + file->deleted; |
f604652e JH |
911 | fill_print_name(file); |
912 | len = strlen(file->print_name); | |
6973dcae JH |
913 | if (max_len < len) |
914 | max_len = len; | |
915 | ||
916 | if (file->is_binary || file->is_unmerged) | |
917 | continue; | |
a2540023 JH |
918 | if (max_change < change) |
919 | max_change = change; | |
6973dcae JH |
920 | } |
921 | ||
a2540023 JH |
922 | /* Compute the width of the graph part; |
923 | * 10 is for one blank at the beginning of the line plus | |
924 | * " | count " between the name and the graph. | |
925 | * | |
926 | * From here on, name_width is the width of the name area, | |
927 | * and width is the width of the graph area. | |
928 | */ | |
929 | name_width = (name_width < max_len) ? name_width : max_len; | |
930 | if (width < (name_width + 10) + max_change) | |
931 | width = width - (name_width + 10); | |
932 | else | |
933 | width = max_change; | |
934 | ||
6973dcae | 935 | for (i = 0; i < data->nr; i++) { |
d2543b8e | 936 | const char *prefix = ""; |
f604652e | 937 | char *name = data->files[i]->print_name; |
6973dcae JH |
938 | int added = data->files[i]->added; |
939 | int deleted = data->files[i]->deleted; | |
a2540023 | 940 | int name_len; |
6973dcae JH |
941 | |
942 | /* | |
943 | * "scale" the filename | |
944 | */ | |
a2540023 JH |
945 | len = name_width; |
946 | name_len = strlen(name); | |
947 | if (name_width < name_len) { | |
6973dcae JH |
948 | char *slash; |
949 | prefix = "..."; | |
a2540023 JH |
950 | len -= 3; |
951 | name += name_len - len; | |
6973dcae JH |
952 | slash = strchr(name, '/'); |
953 | if (slash) | |
954 | name = slash; | |
955 | } | |
6973dcae JH |
956 | |
957 | if (data->files[i]->is_binary) { | |
a408e0e6 | 958 | show_name(options->file, prefix, name, len); |
c0c77734 DB |
959 | fprintf(options->file, " Bin "); |
960 | fprintf(options->file, "%s%d%s", del_c, deleted, reset); | |
961 | fprintf(options->file, " -> "); | |
962 | fprintf(options->file, "%s%d%s", add_c, added, reset); | |
963 | fprintf(options->file, " bytes"); | |
964 | fprintf(options->file, "\n"); | |
f604652e | 965 | continue; |
6973dcae JH |
966 | } |
967 | else if (data->files[i]->is_unmerged) { | |
a408e0e6 | 968 | show_name(options->file, prefix, name, len); |
c0c77734 | 969 | fprintf(options->file, " Unmerged\n"); |
f604652e | 970 | continue; |
6973dcae JH |
971 | } |
972 | else if (!data->files[i]->is_renamed && | |
973 | (added + deleted == 0)) { | |
974 | total_files--; | |
f604652e | 975 | continue; |
6973dcae JH |
976 | } |
977 | ||
a2540023 JH |
978 | /* |
979 | * scale the add/delete | |
980 | */ | |
6973dcae JH |
981 | add = added; |
982 | del = deleted; | |
6973dcae JH |
983 | adds += add; |
984 | dels += del; | |
985 | ||
a2540023 | 986 | if (width <= max_change) { |
a2540023 | 987 | add = scale_linear(add, width, max_change); |
3ed74e60 | 988 | del = scale_linear(del, width, max_change); |
6973dcae | 989 | } |
a408e0e6 | 990 | show_name(options->file, prefix, name, len); |
4d9b5359 JK |
991 | fprintf(options->file, "%5d%s", added + deleted, |
992 | added + deleted ? " " : ""); | |
c0c77734 DB |
993 | show_graph(options->file, '+', add, add_c, reset); |
994 | show_graph(options->file, '-', del, del_c, reset); | |
995 | fprintf(options->file, "\n"); | |
996 | } | |
997 | fprintf(options->file, | |
a408e0e6 MH |
998 | " %d files changed, %d insertions(+), %d deletions(-)\n", |
999 | total_files, adds, dels); | |
6973dcae JH |
1000 | } |
1001 | ||
c0c77734 | 1002 | static void show_shortstats(struct diffstat_t* data, struct diff_options *options) |
ebd124c6 NP |
1003 | { |
1004 | int i, adds = 0, dels = 0, total_files = data->nr; | |
1005 | ||
1006 | if (data->nr == 0) | |
1007 | return; | |
1008 | ||
1009 | for (i = 0; i < data->nr; i++) { | |
1010 | if (!data->files[i]->is_binary && | |
1011 | !data->files[i]->is_unmerged) { | |
1012 | int added = data->files[i]->added; | |
1013 | int deleted= data->files[i]->deleted; | |
1014 | if (!data->files[i]->is_renamed && | |
1015 | (added + deleted == 0)) { | |
1016 | total_files--; | |
1017 | } else { | |
1018 | adds += added; | |
1019 | dels += deleted; | |
1020 | } | |
1021 | } | |
ebd124c6 | 1022 | } |
c0c77734 | 1023 | fprintf(options->file, " %d files changed, %d insertions(+), %d deletions(-)\n", |
ebd124c6 NP |
1024 | total_files, adds, dels); |
1025 | } | |
1026 | ||
4b25d091 | 1027 | static void show_numstat(struct diffstat_t *data, struct diff_options *options) |
74e2abe5 JH |
1028 | { |
1029 | int i; | |
1030 | ||
f604652e JH |
1031 | if (data->nr == 0) |
1032 | return; | |
1033 | ||
74e2abe5 JH |
1034 | for (i = 0; i < data->nr; i++) { |
1035 | struct diffstat_file *file = data->files[i]; | |
1036 | ||
bfddbc5e | 1037 | if (file->is_binary) |
c0c77734 | 1038 | fprintf(options->file, "-\t-\t"); |
bfddbc5e | 1039 | else |
c0c77734 DB |
1040 | fprintf(options->file, |
1041 | "%d\t%d\t", file->added, file->deleted); | |
f604652e JH |
1042 | if (options->line_termination) { |
1043 | fill_print_name(file); | |
1044 | if (!file->is_renamed) | |
c0c77734 | 1045 | write_name_quoted(file->name, options->file, |
f604652e JH |
1046 | options->line_termination); |
1047 | else { | |
c0c77734 DB |
1048 | fputs(file->print_name, options->file); |
1049 | putc(options->line_termination, options->file); | |
f604652e | 1050 | } |
663af342 | 1051 | } else { |
f604652e | 1052 | if (file->is_renamed) { |
c0c77734 DB |
1053 | putc('\0', options->file); |
1054 | write_name_quoted(file->from_name, options->file, '\0'); | |
f604652e | 1055 | } |
c0c77734 | 1056 | write_name_quoted(file->name, options->file, '\0'); |
663af342 | 1057 | } |
74e2abe5 JH |
1058 | } |
1059 | } | |
1060 | ||
c04a7155 JH |
1061 | struct dirstat_file { |
1062 | const char *name; | |
1063 | unsigned long changed; | |
7df7c019 LT |
1064 | }; |
1065 | ||
c04a7155 JH |
1066 | struct dirstat_dir { |
1067 | struct dirstat_file *files; | |
1068 | int alloc, nr, percent, cumulative; | |
1069 | }; | |
1070 | ||
1071 | static long gather_dirstat(FILE *file, struct dirstat_dir *dir, unsigned long changed, const char *base, int baselen) | |
7df7c019 LT |
1072 | { |
1073 | unsigned long this_dir = 0; | |
1074 | unsigned int sources = 0; | |
1075 | ||
1076 | while (dir->nr) { | |
c04a7155 | 1077 | struct dirstat_file *f = dir->files; |
7df7c019 LT |
1078 | int namelen = strlen(f->name); |
1079 | unsigned long this; | |
1080 | char *slash; | |
1081 | ||
1082 | if (namelen < baselen) | |
1083 | break; | |
1084 | if (memcmp(f->name, base, baselen)) | |
1085 | break; | |
1086 | slash = strchr(f->name + baselen, '/'); | |
1087 | if (slash) { | |
1088 | int newbaselen = slash + 1 - f->name; | |
c0c77734 | 1089 | this = gather_dirstat(file, dir, changed, f->name, newbaselen); |
7df7c019 LT |
1090 | sources++; |
1091 | } else { | |
c04a7155 | 1092 | this = f->changed; |
7df7c019 LT |
1093 | dir->files++; |
1094 | dir->nr--; | |
1095 | sources += 2; | |
1096 | } | |
1097 | this_dir += this; | |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | * We don't report dirstat's for | |
1102 | * - the top level | |
1103 | * - or cases where everything came from a single directory | |
1104 | * under this directory (sources == 1). | |
1105 | */ | |
1106 | if (baselen && sources != 1) { | |
1107 | int permille = this_dir * 1000 / changed; | |
1108 | if (permille) { | |
1109 | int percent = permille / 10; | |
1110 | if (percent >= dir->percent) { | |
c0c77734 | 1111 | fprintf(file, "%4d.%01d%% %.*s\n", percent, permille % 10, baselen, base); |
7df7c019 LT |
1112 | if (!dir->cumulative) |
1113 | return 0; | |
1114 | } | |
1115 | } | |
1116 | } | |
1117 | return this_dir; | |
1118 | } | |
1119 | ||
441bca0b LT |
1120 | static int dirstat_compare(const void *_a, const void *_b) |
1121 | { | |
1122 | const struct dirstat_file *a = _a; | |
1123 | const struct dirstat_file *b = _b; | |
1124 | return strcmp(a->name, b->name); | |
1125 | } | |
1126 | ||
c04a7155 | 1127 | static void show_dirstat(struct diff_options *options) |
7df7c019 LT |
1128 | { |
1129 | int i; | |
1130 | unsigned long changed; | |
c04a7155 JH |
1131 | struct dirstat_dir dir; |
1132 | struct diff_queue_struct *q = &diff_queued_diff; | |
1133 | ||
1134 | dir.files = NULL; | |
1135 | dir.alloc = 0; | |
1136 | dir.nr = 0; | |
1137 | dir.percent = options->dirstat_percent; | |
f88d225f | 1138 | dir.cumulative = DIFF_OPT_TST(options, DIRSTAT_CUMULATIVE); |
7df7c019 | 1139 | |
7df7c019 | 1140 | changed = 0; |
c04a7155 JH |
1141 | for (i = 0; i < q->nr; i++) { |
1142 | struct diff_filepair *p = q->queue[i]; | |
1143 | const char *name; | |
1144 | unsigned long copied, added, damage; | |
1145 | ||
1146 | name = p->one->path ? p->one->path : p->two->path; | |
1147 | ||
1148 | if (DIFF_FILE_VALID(p->one) && DIFF_FILE_VALID(p->two)) { | |
1149 | diff_populate_filespec(p->one, 0); | |
1150 | diff_populate_filespec(p->two, 0); | |
1151 | diffcore_count_changes(p->one, p->two, NULL, NULL, 0, | |
1152 | &copied, &added); | |
1153 | diff_free_filespec_data(p->one); | |
1154 | diff_free_filespec_data(p->two); | |
1155 | } else if (DIFF_FILE_VALID(p->one)) { | |
1156 | diff_populate_filespec(p->one, 1); | |
1157 | copied = added = 0; | |
1158 | diff_free_filespec_data(p->one); | |
1159 | } else if (DIFF_FILE_VALID(p->two)) { | |
1160 | diff_populate_filespec(p->two, 1); | |
1161 | copied = 0; | |
1162 | added = p->two->size; | |
1163 | diff_free_filespec_data(p->two); | |
1164 | } else | |
2b0b551d | 1165 | continue; |
c04a7155 JH |
1166 | |
1167 | /* | |
1168 | * Original minus copied is the removed material, | |
1169 | * added is the new material. They are both damages | |
fd33777b HO |
1170 | * made to the preimage. In --dirstat-by-file mode, count |
1171 | * damaged files, not damaged lines. This is done by | |
1172 | * counting only a single damaged line per file. | |
c04a7155 JH |
1173 | */ |
1174 | damage = (p->one->size - copied) + added; | |
fd33777b HO |
1175 | if (DIFF_OPT_TST(options, DIRSTAT_BY_FILE) && damage > 0) |
1176 | damage = 1; | |
c04a7155 JH |
1177 | |
1178 | ALLOC_GROW(dir.files, dir.nr + 1, dir.alloc); | |
1179 | dir.files[dir.nr].name = name; | |
1180 | dir.files[dir.nr].changed = damage; | |
1181 | changed += damage; | |
1182 | dir.nr++; | |
7df7c019 LT |
1183 | } |
1184 | ||
1185 | /* This can happen even with many files, if everything was renames */ | |
1186 | if (!changed) | |
1187 | return; | |
1188 | ||
1189 | /* Show all directories with more than x% of the changes */ | |
441bca0b | 1190 | qsort(dir.files, dir.nr, sizeof(dir.files[0]), dirstat_compare); |
c0c77734 | 1191 | gather_dirstat(options->file, &dir, changed, "", 0); |
7df7c019 LT |
1192 | } |
1193 | ||
f604652e JH |
1194 | static void free_diffstat_info(struct diffstat_t *diffstat) |
1195 | { | |
1196 | int i; | |
1197 | for (i = 0; i < diffstat->nr; i++) { | |
1198 | struct diffstat_file *f = diffstat->files[i]; | |
1199 | if (f->name != f->print_name) | |
1200 | free(f->print_name); | |
1201 | free(f->name); | |
1202 | free(f->from_name); | |
1203 | free(f); | |
1204 | } | |
1205 | free(diffstat->files); | |
1206 | } | |
1207 | ||
88246898 | 1208 | struct checkdiff_t { |
88246898 | 1209 | const char *filename; |
1ba111d1 JH |
1210 | int lineno; |
1211 | struct diff_options *o; | |
cf1b7869 | 1212 | unsigned ws_rule; |
62c64895 | 1213 | unsigned status; |
877f23cc | 1214 | int trailing_blanks_start; |
88246898 JS |
1215 | }; |
1216 | ||
04954043 JH |
1217 | static int is_conflict_marker(const char *line, unsigned long len) |
1218 | { | |
1219 | char firstchar; | |
1220 | int cnt; | |
1221 | ||
1222 | if (len < 8) | |
1223 | return 0; | |
1224 | firstchar = line[0]; | |
1225 | switch (firstchar) { | |
1226 | case '=': case '>': case '<': | |
1227 | break; | |
1228 | default: | |
1229 | return 0; | |
1230 | } | |
1231 | for (cnt = 1; cnt < 7; cnt++) | |
1232 | if (line[cnt] != firstchar) | |
1233 | return 0; | |
1234 | /* line[0] thru line[6] are same as firstchar */ | |
1235 | if (firstchar == '=') { | |
1236 | /* divider between ours and theirs? */ | |
1237 | if (len != 8 || line[7] != '\n') | |
1238 | return 0; | |
1239 | } else if (len < 8 || !isspace(line[7])) { | |
1240 | /* not divider before ours nor after theirs */ | |
1241 | return 0; | |
1242 | } | |
1243 | return 1; | |
1244 | } | |
1245 | ||
88246898 JS |
1246 | static void checkdiff_consume(void *priv, char *line, unsigned long len) |
1247 | { | |
1248 | struct checkdiff_t *data = priv; | |
1ba111d1 JH |
1249 | int color_diff = DIFF_OPT_TST(data->o, COLOR_DIFF); |
1250 | const char *ws = diff_get_color(color_diff, DIFF_WHITESPACE); | |
1251 | const char *reset = diff_get_color(color_diff, DIFF_RESET); | |
1252 | const char *set = diff_get_color(color_diff, DIFF_FILE_NEW); | |
c1795bb0 | 1253 | char *err; |
88246898 JS |
1254 | |
1255 | if (line[0] == '+') { | |
18374e58 | 1256 | unsigned bad; |
0ef617f4 | 1257 | data->lineno++; |
877f23cc JH |
1258 | if (!ws_blank_line(line + 1, len - 1, data->ws_rule)) |
1259 | data->trailing_blanks_start = 0; | |
1260 | else if (!data->trailing_blanks_start) | |
1261 | data->trailing_blanks_start = data->lineno; | |
04954043 JH |
1262 | if (is_conflict_marker(line + 1, len - 1)) { |
1263 | data->status |= 1; | |
1264 | fprintf(data->o->file, | |
1265 | "%s:%d: leftover conflict marker\n", | |
1266 | data->filename, data->lineno); | |
1267 | } | |
8f8841e9 | 1268 | bad = ws_check(line + 1, len - 1, data->ws_rule); |
18374e58 | 1269 | if (!bad) |
c1795bb0 | 1270 | return; |
18374e58 JH |
1271 | data->status |= bad; |
1272 | err = whitespace_error_string(bad); | |
1ba111d1 JH |
1273 | fprintf(data->o->file, "%s:%d: %s.\n", |
1274 | data->filename, data->lineno, err); | |
c1795bb0 | 1275 | free(err); |
1ba111d1 | 1276 | emit_line(data->o->file, set, reset, line, 1); |
8f8841e9 | 1277 | ws_check_emit(line + 1, len - 1, data->ws_rule, |
1ba111d1 | 1278 | data->o->file, set, reset, ws); |
877f23cc | 1279 | } else if (line[0] == ' ') { |
88246898 | 1280 | data->lineno++; |
877f23cc JH |
1281 | data->trailing_blanks_start = 0; |
1282 | } else if (line[0] == '@') { | |
88246898 JS |
1283 | char *plus = strchr(line, '+'); |
1284 | if (plus) | |
0ef617f4 | 1285 | data->lineno = strtol(plus, NULL, 10) - 1; |
88246898 JS |
1286 | else |
1287 | die("invalid diff"); | |
877f23cc | 1288 | data->trailing_blanks_start = 0; |
88246898 JS |
1289 | } |
1290 | } | |
1291 | ||
0660626c JH |
1292 | static unsigned char *deflate_it(char *data, |
1293 | unsigned long size, | |
1294 | unsigned long *result_size) | |
051308f6 | 1295 | { |
0660626c JH |
1296 | int bound; |
1297 | unsigned char *deflated; | |
1298 | z_stream stream; | |
1299 | ||
1300 | memset(&stream, 0, sizeof(stream)); | |
12f6c308 | 1301 | deflateInit(&stream, zlib_compression_level); |
0660626c JH |
1302 | bound = deflateBound(&stream, size); |
1303 | deflated = xmalloc(bound); | |
1304 | stream.next_out = deflated; | |
1305 | stream.avail_out = bound; | |
1306 | ||
1307 | stream.next_in = (unsigned char *)data; | |
1308 | stream.avail_in = size; | |
1309 | while (deflate(&stream, Z_FINISH) == Z_OK) | |
1310 | ; /* nothing */ | |
1311 | deflateEnd(&stream); | |
1312 | *result_size = stream.total_out; | |
1313 | return deflated; | |
051308f6 JH |
1314 | } |
1315 | ||
c0c77734 | 1316 | static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two) |
051308f6 | 1317 | { |
0660626c JH |
1318 | void *cp; |
1319 | void *delta; | |
1320 | void *deflated; | |
1321 | void *data; | |
1322 | unsigned long orig_size; | |
1323 | unsigned long delta_size; | |
1324 | unsigned long deflate_size; | |
1325 | unsigned long data_size; | |
051308f6 | 1326 | |
0660626c JH |
1327 | /* We could do deflated delta, or we could do just deflated two, |
1328 | * whichever is smaller. | |
051308f6 | 1329 | */ |
0660626c JH |
1330 | delta = NULL; |
1331 | deflated = deflate_it(two->ptr, two->size, &deflate_size); | |
1332 | if (one->size && two->size) { | |
1333 | delta = diff_delta(one->ptr, one->size, | |
1334 | two->ptr, two->size, | |
1335 | &delta_size, deflate_size); | |
1336 | if (delta) { | |
1337 | void *to_free = delta; | |
1338 | orig_size = delta_size; | |
1339 | delta = deflate_it(delta, delta_size, &delta_size); | |
1340 | free(to_free); | |
051308f6 JH |
1341 | } |
1342 | } | |
051308f6 | 1343 | |
0660626c | 1344 | if (delta && delta_size < deflate_size) { |
c0c77734 | 1345 | fprintf(file, "delta %lu\n", orig_size); |
0660626c JH |
1346 | free(deflated); |
1347 | data = delta; | |
1348 | data_size = delta_size; | |
1349 | } | |
1350 | else { | |
c0c77734 | 1351 | fprintf(file, "literal %lu\n", two->size); |
0660626c JH |
1352 | free(delta); |
1353 | data = deflated; | |
1354 | data_size = deflate_size; | |
1355 | } | |
051308f6 | 1356 | |
0660626c JH |
1357 | /* emit data encoded in base85 */ |
1358 | cp = data; | |
1359 | while (data_size) { | |
1360 | int bytes = (52 < data_size) ? 52 : data_size; | |
051308f6 | 1361 | char line[70]; |
0660626c | 1362 | data_size -= bytes; |
051308f6 JH |
1363 | if (bytes <= 26) |
1364 | line[0] = bytes + 'A' - 1; | |
1365 | else | |
1366 | line[0] = bytes - 26 + 'a' - 1; | |
1367 | encode_85(line + 1, cp, bytes); | |
1d7f171c | 1368 | cp = (char *) cp + bytes; |
c0c77734 DB |
1369 | fputs(line, file); |
1370 | fputc('\n', file); | |
051308f6 | 1371 | } |
c0c77734 | 1372 | fprintf(file, "\n"); |
0660626c | 1373 | free(data); |
051308f6 JH |
1374 | } |
1375 | ||
c0c77734 | 1376 | static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two) |
d4c452f0 | 1377 | { |
c0c77734 DB |
1378 | fprintf(file, "GIT binary patch\n"); |
1379 | emit_binary_diff_body(file, one, two); | |
1380 | emit_binary_diff_body(file, two, one); | |
d4c452f0 JH |
1381 | } |
1382 | ||
72cf4841 | 1383 | static void diff_filespec_load_driver(struct diff_filespec *one) |
6973dcae | 1384 | { |
122aa6f9 JK |
1385 | if (!one->driver) |
1386 | one->driver = userdiff_find_by_path(one->path); | |
1387 | if (!one->driver) | |
1388 | one->driver = userdiff_find_by_name("default"); | |
29a3eefd JH |
1389 | } |
1390 | ||
1391 | int diff_filespec_is_binary(struct diff_filespec *one) | |
1392 | { | |
122aa6f9 JK |
1393 | if (one->is_binary == -1) { |
1394 | diff_filespec_load_driver(one); | |
1395 | if (one->driver->binary != -1) | |
1396 | one->is_binary = one->driver->binary; | |
1397 | else { | |
1398 | if (!one->data && DIFF_FILE_VALID(one)) | |
1399 | diff_populate_filespec(one, 0); | |
1400 | if (one->data) | |
1401 | one->is_binary = buffer_is_binary(one->data, | |
1402 | one->size); | |
1403 | if (one->is_binary == -1) | |
1404 | one->is_binary = 0; | |
1405 | } | |
1406 | } | |
29a3eefd | 1407 | return one->is_binary; |
6973dcae JH |
1408 | } |
1409 | ||
be58e70d | 1410 | static const struct userdiff_funcname *diff_funcname_pattern(struct diff_filespec *one) |
f258475a | 1411 | { |
122aa6f9 JK |
1412 | diff_filespec_load_driver(one); |
1413 | return one->driver->funcname.pattern ? &one->driver->funcname : NULL; | |
f258475a JH |
1414 | } |
1415 | ||
80c49c3d TR |
1416 | static const char *userdiff_word_regex(struct diff_filespec *one) |
1417 | { | |
1418 | diff_filespec_load_driver(one); | |
1419 | return one->driver->word_regex; | |
1420 | } | |
1421 | ||
a5a818ee JH |
1422 | void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b) |
1423 | { | |
1424 | if (!options->a_prefix) | |
1425 | options->a_prefix = a; | |
1426 | if (!options->b_prefix) | |
1427 | options->b_prefix = b; | |
1428 | } | |
1429 | ||
04427ac8 JK |
1430 | static const char *get_textconv(struct diff_filespec *one) |
1431 | { | |
1432 | if (!DIFF_FILE_VALID(one)) | |
1433 | return NULL; | |
2675773a JK |
1434 | if (!S_ISREG(one->mode)) |
1435 | return NULL; | |
04427ac8 JK |
1436 | diff_filespec_load_driver(one); |
1437 | return one->driver->textconv; | |
1438 | } | |
1439 | ||
6973dcae JH |
1440 | static void builtin_diff(const char *name_a, |
1441 | const char *name_b, | |
1442 | struct diff_filespec *one, | |
1443 | struct diff_filespec *two, | |
1444 | const char *xfrm_msg, | |
051308f6 | 1445 | struct diff_options *o, |
6973dcae JH |
1446 | int complete_rewrite) |
1447 | { | |
1448 | mmfile_t mf1, mf2; | |
1449 | const char *lbl[2]; | |
1450 | char *a_one, *b_two; | |
8f67f8ae PH |
1451 | const char *set = diff_get_color_opt(o, DIFF_METAINFO); |
1452 | const char *reset = diff_get_color_opt(o, DIFF_RESET); | |
a5a818ee | 1453 | const char *a_prefix, *b_prefix; |
c7534ef4 | 1454 | const char *textconv_one = NULL, *textconv_two = NULL; |
a5a818ee | 1455 | |
3aa1f7ca JK |
1456 | if (DIFF_OPT_TST(o, ALLOW_TEXTCONV)) { |
1457 | textconv_one = get_textconv(one); | |
1458 | textconv_two = get_textconv(two); | |
1459 | } | |
1460 | ||
a5a818ee JH |
1461 | diff_set_mnemonic_prefix(o, "a/", "b/"); |
1462 | if (DIFF_OPT_TST(o, REVERSE_DIFF)) { | |
1463 | a_prefix = o->b_prefix; | |
1464 | b_prefix = o->a_prefix; | |
1465 | } else { | |
1466 | a_prefix = o->a_prefix; | |
1467 | b_prefix = o->b_prefix; | |
1468 | } | |
6973dcae | 1469 | |
71b989e7 LT |
1470 | /* Never use a non-valid filename anywhere if at all possible */ |
1471 | name_a = DIFF_FILE_VALID(one) ? name_a : name_b; | |
1472 | name_b = DIFF_FILE_VALID(two) ? name_b : name_a; | |
1473 | ||
a5a818ee JH |
1474 | a_one = quote_two(a_prefix, name_a + (*name_a == '/')); |
1475 | b_two = quote_two(b_prefix, name_b + (*name_b == '/')); | |
6973dcae JH |
1476 | lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null"; |
1477 | lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null"; | |
c0c77734 | 1478 | fprintf(o->file, "%sdiff --git %s %s%s\n", set, a_one, b_two, reset); |
6973dcae JH |
1479 | if (lbl[0][0] == '/') { |
1480 | /* /dev/null */ | |
c0c77734 | 1481 | fprintf(o->file, "%snew file mode %06o%s\n", set, two->mode, reset); |
50f575fc | 1482 | if (xfrm_msg && xfrm_msg[0]) |
c0c77734 | 1483 | fprintf(o->file, "%s%s%s\n", set, xfrm_msg, reset); |
6973dcae JH |
1484 | } |
1485 | else if (lbl[1][0] == '/') { | |
c0c77734 | 1486 | fprintf(o->file, "%sdeleted file mode %06o%s\n", set, one->mode, reset); |
50f575fc | 1487 | if (xfrm_msg && xfrm_msg[0]) |
c0c77734 | 1488 | fprintf(o->file, "%s%s%s\n", set, xfrm_msg, reset); |
6973dcae JH |
1489 | } |
1490 | else { | |
1491 | if (one->mode != two->mode) { | |
c0c77734 DB |
1492 | fprintf(o->file, "%sold mode %06o%s\n", set, one->mode, reset); |
1493 | fprintf(o->file, "%snew mode %06o%s\n", set, two->mode, reset); | |
cd112cef | 1494 | } |
50f575fc | 1495 | if (xfrm_msg && xfrm_msg[0]) |
c0c77734 | 1496 | fprintf(o->file, "%s%s%s\n", set, xfrm_msg, reset); |
6973dcae JH |
1497 | /* |
1498 | * we do not run diff between different kind | |
1499 | * of objects. | |
1500 | */ | |
1501 | if ((one->mode ^ two->mode) & S_IFMT) | |
1502 | goto free_ab_and_return; | |
0c01857d | 1503 | if (complete_rewrite && |
3aa1f7ca JK |
1504 | (textconv_one || !diff_filespec_is_binary(one)) && |
1505 | (textconv_two || !diff_filespec_is_binary(two))) { | |
1506 | emit_rewrite_diff(name_a, name_b, one, two, | |
1507 | textconv_one, textconv_two, o); | |
34a5e1a2 | 1508 | o->found_changes = 1; |
6973dcae JH |
1509 | goto free_ab_and_return; |
1510 | } | |
1511 | } | |
1512 | ||
1513 | if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0) | |
1514 | die("unable to read files to diff"); | |
1515 | ||
8f67f8ae | 1516 | if (!DIFF_OPT_TST(o, TEXT) && |
04427ac8 JK |
1517 | ( (diff_filespec_is_binary(one) && !textconv_one) || |
1518 | (diff_filespec_is_binary(two) && !textconv_two) )) { | |
0660626c JH |
1519 | /* Quite common confusing case */ |
1520 | if (mf1.size == mf2.size && | |
1521 | !memcmp(mf1.ptr, mf2.ptr, mf1.size)) | |
1522 | goto free_ab_and_return; | |
8f67f8ae | 1523 | if (DIFF_OPT_TST(o, BINARY)) |
c0c77734 | 1524 | emit_binary_diff(o->file, &mf1, &mf2); |
051308f6 | 1525 | else |
c0c77734 DB |
1526 | fprintf(o->file, "Binary files %s and %s differ\n", |
1527 | lbl[0], lbl[1]); | |
34a5e1a2 | 1528 | o->found_changes = 1; |
051308f6 | 1529 | } |
6973dcae JH |
1530 | else { |
1531 | /* Crazy xdl interfaces.. */ | |
1532 | const char *diffopts = getenv("GIT_DIFF_OPTS"); | |
1533 | xpparam_t xpp; | |
1534 | xdemitconf_t xecfg; | |
1535 | xdemitcb_t ecb; | |
1536 | struct emit_callback ecbdata; | |
be58e70d | 1537 | const struct userdiff_funcname *pe; |
f258475a | 1538 | |
04427ac8 JK |
1539 | if (textconv_one) { |
1540 | size_t size; | |
1541 | mf1.ptr = run_textconv(textconv_one, one, &size); | |
1542 | if (!mf1.ptr) | |
1543 | die("unable to read files to diff"); | |
1544 | mf1.size = size; | |
1545 | } | |
1546 | if (textconv_two) { | |
1547 | size_t size; | |
1548 | mf2.ptr = run_textconv(textconv_two, two, &size); | |
1549 | if (!mf2.ptr) | |
1550 | die("unable to read files to diff"); | |
1551 | mf2.size = size; | |
1552 | } | |
1553 | ||
45e7ca0f BC |
1554 | pe = diff_funcname_pattern(one); |
1555 | if (!pe) | |
1556 | pe = diff_funcname_pattern(two); | |
6973dcae | 1557 | |
9ccd0a88 | 1558 | memset(&xpp, 0, sizeof(xpp)); |
30b25010 | 1559 | memset(&xecfg, 0, sizeof(xecfg)); |
cd112cef | 1560 | memset(&ecbdata, 0, sizeof(ecbdata)); |
6973dcae | 1561 | ecbdata.label_path = lbl; |
8f67f8ae | 1562 | ecbdata.color_diff = DIFF_OPT_TST(o, COLOR_DIFF); |
34a5e1a2 | 1563 | ecbdata.found_changesp = &o->found_changes; |
cf1b7869 | 1564 | ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a); |
c0c77734 | 1565 | ecbdata.file = o->file; |
0d21efa5 | 1566 | xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts; |
ee1e5412 | 1567 | xecfg.ctxlen = o->context; |
6d0e674a | 1568 | xecfg.interhunkctxlen = o->interhunkcontext; |
6973dcae | 1569 | xecfg.flags = XDL_EMIT_FUNCNAMES; |
45e7ca0f | 1570 | if (pe) |
a013585b | 1571 | xdiff_set_find_func(&xecfg, pe->pattern, pe->cflags); |
6973dcae JH |
1572 | if (!diffopts) |
1573 | ; | |
cc44c765 | 1574 | else if (!prefixcmp(diffopts, "--unified=")) |
6973dcae | 1575 | xecfg.ctxlen = strtoul(diffopts + 10, NULL, 10); |
cc44c765 | 1576 | else if (!prefixcmp(diffopts, "-u")) |
6973dcae | 1577 | xecfg.ctxlen = strtoul(diffopts + 2, NULL, 10); |
c0c77734 | 1578 | if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS)) { |
f59a59e2 JS |
1579 | ecbdata.diff_words = |
1580 | xcalloc(1, sizeof(struct diff_words_data)); | |
c0c77734 | 1581 | ecbdata.diff_words->file = o->file; |
80c49c3d TR |
1582 | if (!o->word_regex) |
1583 | o->word_regex = userdiff_word_regex(one); | |
1584 | if (!o->word_regex) | |
1585 | o->word_regex = userdiff_word_regex(two); | |
98a4d87b BSSJ |
1586 | if (!o->word_regex) |
1587 | o->word_regex = diff_word_regex_cfg; | |
2b6a5417 JS |
1588 | if (o->word_regex) { |
1589 | ecbdata.diff_words->word_regex = (regex_t *) | |
1590 | xmalloc(sizeof(regex_t)); | |
1591 | if (regcomp(ecbdata.diff_words->word_regex, | |
bf82940d TR |
1592 | o->word_regex, |
1593 | REG_EXTENDED | REG_NEWLINE)) | |
2b6a5417 JS |
1594 | die ("Invalid regular expression: %s", |
1595 | o->word_regex); | |
1596 | } | |
c0c77734 | 1597 | } |
8a3f524b JH |
1598 | xdi_diff_outf(&mf1, &mf2, fn_out_consume, &ecbdata, |
1599 | &xpp, &xecfg, &ecb); | |
8f67f8ae | 1600 | if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS)) |
f59a59e2 | 1601 | free_diff_words_data(&ecbdata); |
04427ac8 JK |
1602 | if (textconv_one) |
1603 | free(mf1.ptr); | |
1604 | if (textconv_two) | |
1605 | free(mf2.ptr); | |
6973dcae JH |
1606 | } |
1607 | ||
1608 | free_ab_and_return: | |
fc3abdf5 JH |
1609 | diff_free_filespec_data(one); |
1610 | diff_free_filespec_data(two); | |
6973dcae JH |
1611 | free(a_one); |
1612 | free(b_two); | |
1613 | return; | |
1614 | } | |
1615 | ||
1616 | static void builtin_diffstat(const char *name_a, const char *name_b, | |
1617 | struct diff_filespec *one, | |
1618 | struct diff_filespec *two, | |
710158e3 | 1619 | struct diffstat_t *diffstat, |
0d21efa5 | 1620 | struct diff_options *o, |
710158e3 | 1621 | int complete_rewrite) |
6973dcae JH |
1622 | { |
1623 | mmfile_t mf1, mf2; | |
1624 | struct diffstat_file *data; | |
1625 | ||
1626 | data = diffstat_add(diffstat, name_a, name_b); | |
1627 | ||
1628 | if (!one || !two) { | |
1629 | data->is_unmerged = 1; | |
1630 | return; | |
1631 | } | |
710158e3 JH |
1632 | if (complete_rewrite) { |
1633 | diff_populate_filespec(one, 0); | |
1634 | diff_populate_filespec(two, 0); | |
1635 | data->deleted = count_lines(one->data, one->size); | |
1636 | data->added = count_lines(two->data, two->size); | |
fc3abdf5 | 1637 | goto free_and_return; |
710158e3 | 1638 | } |
6973dcae JH |
1639 | if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0) |
1640 | die("unable to read files to diff"); | |
1641 | ||
29a3eefd | 1642 | if (diff_filespec_is_binary(one) || diff_filespec_is_binary(two)) { |
6973dcae | 1643 | data->is_binary = 1; |
b1882587 AP |
1644 | data->added = mf2.size; |
1645 | data->deleted = mf1.size; | |
1646 | } else { | |
6973dcae JH |
1647 | /* Crazy xdl interfaces.. */ |
1648 | xpparam_t xpp; | |
1649 | xdemitconf_t xecfg; | |
1650 | xdemitcb_t ecb; | |
1651 | ||
9ccd0a88 | 1652 | memset(&xpp, 0, sizeof(xpp)); |
30b25010 | 1653 | memset(&xecfg, 0, sizeof(xecfg)); |
0d21efa5 | 1654 | xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts; |
8a3f524b JH |
1655 | xdi_diff_outf(&mf1, &mf2, diffstat_consume, diffstat, |
1656 | &xpp, &xecfg, &ecb); | |
6973dcae | 1657 | } |
fc3abdf5 JH |
1658 | |
1659 | free_and_return: | |
1660 | diff_free_filespec_data(one); | |
1661 | diff_free_filespec_data(two); | |
6973dcae JH |
1662 | } |
1663 | ||
88246898 | 1664 | static void builtin_checkdiff(const char *name_a, const char *name_b, |
cd676a51 | 1665 | const char *attr_path, |
5ff10dd6 JH |
1666 | struct diff_filespec *one, |
1667 | struct diff_filespec *two, | |
1668 | struct diff_options *o) | |
88246898 JS |
1669 | { |
1670 | mmfile_t mf1, mf2; | |
1671 | struct checkdiff_t data; | |
1672 | ||
1673 | if (!two) | |
1674 | return; | |
1675 | ||
1676 | memset(&data, 0, sizeof(data)); | |
88246898 JS |
1677 | data.filename = name_b ? name_b : name_a; |
1678 | data.lineno = 0; | |
1ba111d1 | 1679 | data.o = o; |
cd676a51 | 1680 | data.ws_rule = whitespace_rule(attr_path); |
88246898 JS |
1681 | |
1682 | if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0) | |
1683 | die("unable to read files to diff"); | |
1684 | ||
5ff10dd6 JH |
1685 | /* |
1686 | * All the other codepaths check both sides, but not checking | |
1687 | * the "old" side here is deliberate. We are checking the newly | |
1688 | * introduced changes, and as long as the "new" side is text, we | |
1689 | * can and should check what it introduces. | |
1690 | */ | |
29a3eefd | 1691 | if (diff_filespec_is_binary(two)) |
fc3abdf5 | 1692 | goto free_and_return; |
88246898 JS |
1693 | else { |
1694 | /* Crazy xdl interfaces.. */ | |
1695 | xpparam_t xpp; | |
1696 | xdemitconf_t xecfg; | |
1697 | xdemitcb_t ecb; | |
1698 | ||
9ccd0a88 | 1699 | memset(&xpp, 0, sizeof(xpp)); |
30b25010 | 1700 | memset(&xecfg, 0, sizeof(xecfg)); |
c35539eb | 1701 | xecfg.ctxlen = 1; /* at least one context line */ |
88246898 | 1702 | xpp.flags = XDF_NEED_MINIMAL; |
8a3f524b JH |
1703 | xdi_diff_outf(&mf1, &mf2, checkdiff_consume, &data, |
1704 | &xpp, &xecfg, &ecb); | |
877f23cc | 1705 | |
04c6e9e9 JH |
1706 | if ((data.ws_rule & WS_TRAILING_SPACE) && |
1707 | data.trailing_blanks_start) { | |
877f23cc JH |
1708 | fprintf(o->file, "%s:%d: ends with blank lines.\n", |
1709 | data.filename, data.trailing_blanks_start); | |
1710 | data.status = 1; /* report errors */ | |
1711 | } | |
88246898 | 1712 | } |
fc3abdf5 JH |
1713 | free_and_return: |
1714 | diff_free_filespec_data(one); | |
1715 | diff_free_filespec_data(two); | |
62c64895 WC |
1716 | if (data.status) |
1717 | DIFF_OPT_SET(o, CHECK_FAILED); | |
88246898 JS |
1718 | } |
1719 | ||
6973dcae JH |
1720 | struct diff_filespec *alloc_filespec(const char *path) |
1721 | { | |
1722 | int namelen = strlen(path); | |
1723 | struct diff_filespec *spec = xmalloc(sizeof(*spec) + namelen + 1); | |
1724 | ||
1725 | memset(spec, 0, sizeof(*spec)); | |
1726 | spec->path = (char *)(spec + 1); | |
1727 | memcpy(spec->path, path, namelen+1); | |
9fb88419 | 1728 | spec->count = 1; |
122aa6f9 | 1729 | spec->is_binary = -1; |
6973dcae JH |
1730 | return spec; |
1731 | } | |
1732 | ||
9fb88419 LT |
1733 | void free_filespec(struct diff_filespec *spec) |
1734 | { | |
1735 | if (!--spec->count) { | |
1736 | diff_free_filespec_data(spec); | |
1737 | free(spec); | |
1738 | } | |
1739 | } | |
1740 | ||
6973dcae JH |
1741 | void fill_filespec(struct diff_filespec *spec, const unsigned char *sha1, |
1742 | unsigned short mode) | |
1743 | { | |
1744 | if (mode) { | |
1745 | spec->mode = canon_mode(mode); | |
e702496e | 1746 | hashcpy(spec->sha1, sha1); |
0bef57ee | 1747 | spec->sha1_valid = !is_null_sha1(sha1); |
6973dcae JH |
1748 | } |
1749 | } | |
1750 | ||
1751 | /* | |
5adf317b | 1752 | * Given a name and sha1 pair, if the index tells us the file in |
6973dcae JH |
1753 | * the work tree has that object contents, return true, so that |
1754 | * prepare_temp_file() does not have to inflate and extract. | |
1755 | */ | |
1510fea7 | 1756 | static int reuse_worktree_file(const char *name, const unsigned char *sha1, int want_file) |
6973dcae JH |
1757 | { |
1758 | struct cache_entry *ce; | |
1759 | struct stat st; | |
1760 | int pos, len; | |
1761 | ||
150115ad JH |
1762 | /* |
1763 | * We do not read the cache ourselves here, because the | |
6973dcae JH |
1764 | * benchmark with my previous version that always reads cache |
1765 | * shows that it makes things worse for diff-tree comparing | |
1766 | * two linux-2.6 kernel trees in an already checked out work | |
1767 | * tree. This is because most diff-tree comparisons deal with | |
1768 | * only a small number of files, while reading the cache is | |
1769 | * expensive for a large project, and its cost outweighs the | |
1770 | * savings we get by not inflating the object to a temporary | |
1771 | * file. Practically, this code only helps when we are used | |
1772 | * by diff-cache --cached, which does read the cache before | |
1773 | * calling us. | |
1774 | */ | |
1775 | if (!active_cache) | |
1776 | return 0; | |
1777 | ||
1510fea7 SP |
1778 | /* We want to avoid the working directory if our caller |
1779 | * doesn't need the data in a normal file, this system | |
1780 | * is rather slow with its stat/open/mmap/close syscalls, | |
1781 | * and the object is contained in a pack file. The pack | |
1782 | * is probably already open and will be faster to obtain | |
1783 | * the data through than the working directory. Loose | |
1784 | * objects however would tend to be slower as they need | |
1785 | * to be individually opened and inflated. | |
1786 | */ | |
cd673c1f | 1787 | if (!FAST_WORKING_DIRECTORY && !want_file && has_sha1_pack(sha1)) |
1510fea7 SP |
1788 | return 0; |
1789 | ||
6973dcae JH |
1790 | len = strlen(name); |
1791 | pos = cache_name_pos(name, len); | |
1792 | if (pos < 0) | |
1793 | return 0; | |
1794 | ce = active_cache[pos]; | |
eadb5831 JH |
1795 | |
1796 | /* | |
1797 | * This is not the sha1 we are looking for, or | |
1798 | * unreusable because it is not a regular file. | |
1799 | */ | |
1800 | if (hashcmp(sha1, ce->sha1) || !S_ISREG(ce->ce_mode)) | |
6973dcae | 1801 | return 0; |
eadb5831 | 1802 | |
150115ad JH |
1803 | /* |
1804 | * If ce is marked as "assume unchanged", there is no | |
1805 | * guarantee that work tree matches what we are looking for. | |
1806 | */ | |
1807 | if (ce->ce_flags & CE_VALID) | |
1808 | return 0; | |
1809 | ||
eadb5831 JH |
1810 | /* |
1811 | * If ce matches the file in the work tree, we can reuse it. | |
6973dcae | 1812 | */ |
eadb5831 JH |
1813 | if (ce_uptodate(ce) || |
1814 | (!lstat(name, &st) && !ce_match_stat(ce, &st, 0))) | |
1815 | return 1; | |
1816 | ||
1817 | return 0; | |
6973dcae JH |
1818 | } |
1819 | ||
3afaa72d JH |
1820 | static int populate_from_stdin(struct diff_filespec *s) |
1821 | { | |
f285a2d7 | 1822 | struct strbuf buf = STRBUF_INIT; |
c32f749f | 1823 | size_t size = 0; |
af6eb822 | 1824 | |
f1696ee3 | 1825 | if (strbuf_read(&buf, 0, 0) < 0) |
af6eb822 | 1826 | return error("error while reading from stdin %s", |
3afaa72d | 1827 | strerror(errno)); |
af6eb822 | 1828 | |
3afaa72d | 1829 | s->should_munmap = 0; |
c32f749f RS |
1830 | s->data = strbuf_detach(&buf, &size); |
1831 | s->size = size; | |
3afaa72d JH |
1832 | s->should_free = 1; |
1833 | return 0; | |
1834 | } | |
1835 | ||
04786756 LT |
1836 | static int diff_populate_gitlink(struct diff_filespec *s, int size_only) |
1837 | { | |
1838 | int len; | |
1839 | char *data = xmalloc(100); | |
1840 | len = snprintf(data, 100, | |
1841 | "Subproject commit %s\n", sha1_to_hex(s->sha1)); | |
1842 | s->data = data; | |
1843 | s->size = len; | |
1844 | s->should_free = 1; | |
1845 | if (size_only) { | |
1846 | s->data = NULL; | |
1847 | free(data); | |
1848 | } | |
1849 | return 0; | |
1850 | } | |
1851 | ||
6973dcae JH |
1852 | /* |
1853 | * While doing rename detection and pickaxe operation, we may need to | |
1854 | * grab the data for the blob (or file) for our own in-core comparison. | |
1855 | * diff_filespec has data and size fields for this purpose. | |
1856 | */ | |
1857 | int diff_populate_filespec(struct diff_filespec *s, int size_only) | |
1858 | { | |
1859 | int err = 0; | |
1860 | if (!DIFF_FILE_VALID(s)) | |
1861 | die("internal error: asking to populate invalid file."); | |
1862 | if (S_ISDIR(s->mode)) | |
1863 | return -1; | |
1864 | ||
6973dcae | 1865 | if (s->data) |
fc3abdf5 | 1866 | return 0; |
04786756 | 1867 | |
6e0b8ed6 JH |
1868 | if (size_only && 0 < s->size) |
1869 | return 0; | |
1870 | ||
302b9282 | 1871 | if (S_ISGITLINK(s->mode)) |
04786756 LT |
1872 | return diff_populate_gitlink(s, size_only); |
1873 | ||
6973dcae | 1874 | if (!s->sha1_valid || |
1510fea7 | 1875 | reuse_worktree_file(s->path, s->sha1, 0)) { |
f285a2d7 | 1876 | struct strbuf buf = STRBUF_INIT; |
6973dcae JH |
1877 | struct stat st; |
1878 | int fd; | |
6c510bee | 1879 | |
3afaa72d JH |
1880 | if (!strcmp(s->path, "-")) |
1881 | return populate_from_stdin(s); | |
1882 | ||
6973dcae JH |
1883 | if (lstat(s->path, &st) < 0) { |
1884 | if (errno == ENOENT) { | |
1885 | err_empty: | |
1886 | err = -1; | |
1887 | empty: | |
d2543b8e | 1888 | s->data = (char *)""; |
6973dcae JH |
1889 | s->size = 0; |
1890 | return err; | |
1891 | } | |
1892 | } | |
dc49cd76 | 1893 | s->size = xsize_t(st.st_size); |
6973dcae JH |
1894 | if (!s->size) |
1895 | goto empty; | |
6973dcae | 1896 | if (S_ISLNK(st.st_mode)) { |
cf219d8c LT |
1897 | struct strbuf sb = STRBUF_INIT; |
1898 | ||
1899 | if (strbuf_readlink(&sb, s->path, s->size)) | |
6973dcae | 1900 | goto err_empty; |
0956a6db RS |
1901 | s->size = sb.len; |
1902 | s->data = strbuf_detach(&sb, NULL); | |
cf219d8c | 1903 | s->should_free = 1; |
6973dcae JH |
1904 | return 0; |
1905 | } | |
cf219d8c LT |
1906 | if (size_only) |
1907 | return 0; | |
6973dcae JH |
1908 | fd = open(s->path, O_RDONLY); |
1909 | if (fd < 0) | |
1910 | goto err_empty; | |
c4712e45 | 1911 | s->data = xmmap(NULL, s->size, PROT_READ, MAP_PRIVATE, fd, 0); |
6973dcae | 1912 | close(fd); |
6973dcae | 1913 | s->should_munmap = 1; |
6c510bee LT |
1914 | |
1915 | /* | |
1916 | * Convert from working tree format to canonical git format | |
1917 | */ | |
21e5ad50 | 1918 | if (convert_to_git(s->path, s->data, s->size, &buf, safe_crlf)) { |
c32f749f | 1919 | size_t size = 0; |
6c510bee LT |
1920 | munmap(s->data, s->size); |
1921 | s->should_munmap = 0; | |
c32f749f RS |
1922 | s->data = strbuf_detach(&buf, &size); |
1923 | s->size = size; | |
6c510bee LT |
1924 | s->should_free = 1; |
1925 | } | |
6973dcae JH |
1926 | } |
1927 | else { | |
21666f1a | 1928 | enum object_type type; |
6e0b8ed6 | 1929 | if (size_only) |
21666f1a | 1930 | type = sha1_object_info(s->sha1, &s->size); |
6973dcae | 1931 | else { |
21666f1a | 1932 | s->data = read_sha1_file(s->sha1, &type, &s->size); |
6973dcae JH |
1933 | s->should_free = 1; |
1934 | } | |
1935 | } | |
1936 | return 0; | |
1937 | } | |
1938 | ||
8ae92e63 | 1939 | void diff_free_filespec_blob(struct diff_filespec *s) |
6973dcae JH |
1940 | { |
1941 | if (s->should_free) | |
1942 | free(s->data); | |
1943 | else if (s->should_munmap) | |
1944 | munmap(s->data, s->size); | |
fc3abdf5 JH |
1945 | |
1946 | if (s->should_free || s->should_munmap) { | |
1947 | s->should_free = s->should_munmap = 0; | |
1948 | s->data = NULL; | |
1949 | } | |
eede7b7d JK |
1950 | } |
1951 | ||
1952 | void diff_free_filespec_data(struct diff_filespec *s) | |
1953 | { | |
8ae92e63 | 1954 | diff_free_filespec_blob(s); |
6973dcae JH |
1955 | free(s->cnt_data); |
1956 | s->cnt_data = NULL; | |
1957 | } | |
1958 | ||
4e218f54 | 1959 | static void prep_temp_blob(const char *path, struct diff_tempfile *temp, |
6973dcae JH |
1960 | void *blob, |
1961 | unsigned long size, | |
1962 | const unsigned char *sha1, | |
1963 | int mode) | |
1964 | { | |
1965 | int fd; | |
4e218f54 | 1966 | struct strbuf buf = STRBUF_INIT; |
6973dcae | 1967 | |
1472966c | 1968 | fd = git_mkstemp(temp->tmp_path, PATH_MAX, ".diff_XXXXXX"); |
6973dcae | 1969 | if (fd < 0) |
e7a7be88 | 1970 | die("unable to create temp-file: %s", strerror(errno)); |
4e218f54 JS |
1971 | if (convert_to_working_tree(path, |
1972 | (const char *)blob, (size_t)size, &buf)) { | |
1973 | blob = buf.buf; | |
1974 | size = buf.len; | |
1975 | } | |
93822c22 | 1976 | if (write_in_full(fd, blob, size) != size) |
6973dcae JH |
1977 | die("unable to write temp-file"); |
1978 | close(fd); | |
1979 | temp->name = temp->tmp_path; | |
1980 | strcpy(temp->hex, sha1_to_hex(sha1)); | |
1981 | temp->hex[40] = 0; | |
1982 | sprintf(temp->mode, "%06o", mode); | |
4e218f54 | 1983 | strbuf_release(&buf); |
6973dcae JH |
1984 | } |
1985 | ||
479b0ae8 JK |
1986 | static struct diff_tempfile *prepare_temp_file(const char *name, |
1987 | struct diff_filespec *one) | |
6973dcae | 1988 | { |
479b0ae8 JK |
1989 | struct diff_tempfile *temp = claim_diff_tempfile(); |
1990 | ||
6973dcae JH |
1991 | if (!DIFF_FILE_VALID(one)) { |
1992 | not_a_valid_file: | |
1993 | /* A '-' entry produces this for file-2, and | |
1994 | * a '+' entry produces this for file-1. | |
1995 | */ | |
1996 | temp->name = "/dev/null"; | |
1997 | strcpy(temp->hex, "."); | |
1998 | strcpy(temp->mode, "."); | |
479b0ae8 JK |
1999 | return temp; |
2000 | } | |
2001 | ||
2002 | if (!remove_tempfile_installed) { | |
2003 | atexit(remove_tempfile); | |
57b235a4 | 2004 | sigchain_push_common(remove_tempfile_on_signal); |
479b0ae8 | 2005 | remove_tempfile_installed = 1; |
6973dcae JH |
2006 | } |
2007 | ||
2008 | if (!one->sha1_valid || | |
1510fea7 | 2009 | reuse_worktree_file(name, one->sha1, 1)) { |
6973dcae JH |
2010 | struct stat st; |
2011 | if (lstat(name, &st) < 0) { | |
2012 | if (errno == ENOENT) | |
2013 | goto not_a_valid_file; | |
2014 | die("stat(%s): %s", name, strerror(errno)); | |
2015 | } | |
2016 | if (S_ISLNK(st.st_mode)) { | |
2017 | int ret; | |
2018 | char buf[PATH_MAX + 1]; /* ought to be SYMLINK_MAX */ | |
dfab6aae | 2019 | ret = readlink(name, buf, sizeof(buf)); |
6973dcae JH |
2020 | if (ret < 0) |
2021 | die("readlink(%s)", name); | |
dfab6aae LT |
2022 | if (ret == sizeof(buf)) |
2023 | die("symlink too long: %s", name); | |
4e218f54 | 2024 | prep_temp_blob(name, temp, buf, ret, |
6973dcae JH |
2025 | (one->sha1_valid ? |
2026 | one->sha1 : null_sha1), | |
2027 | (one->sha1_valid ? | |
2028 | one->mode : S_IFLNK)); | |
2029 | } | |
2030 | else { | |
2031 | /* we can borrow from the file in the work tree */ | |
2032 | temp->name = name; | |
2033 | if (!one->sha1_valid) | |
2034 | strcpy(temp->hex, sha1_to_hex(null_sha1)); | |
2035 | else | |
2036 | strcpy(temp->hex, sha1_to_hex(one->sha1)); | |
2037 | /* Even though we may sometimes borrow the | |
2038 | * contents from the work tree, we always want | |
2039 | * one->mode. mode is trustworthy even when | |
2040 | * !(one->sha1_valid), as long as | |
2041 | * DIFF_FILE_VALID(one). | |
2042 | */ | |
2043 | sprintf(temp->mode, "%06o", one->mode); | |
2044 | } | |
479b0ae8 | 2045 | return temp; |
6973dcae JH |
2046 | } |
2047 | else { | |
2048 | if (diff_populate_filespec(one, 0)) | |
2049 | die("cannot read data blob for %s", one->path); | |
4e218f54 | 2050 | prep_temp_blob(name, temp, one->data, one->size, |
6973dcae JH |
2051 | one->sha1, one->mode); |
2052 | } | |
479b0ae8 | 2053 | return temp; |
6973dcae JH |
2054 | } |
2055 | ||
6973dcae JH |
2056 | /* An external diff command takes: |
2057 | * | |
2058 | * diff-cmd name infile1 infile1-sha1 infile1-mode \ | |
2059 | * infile2 infile2-sha1 infile2-mode [ rename-to ] | |
2060 | * | |
2061 | */ | |
2062 | static void run_external_diff(const char *pgm, | |
2063 | const char *name, | |
2064 | const char *other, | |
2065 | struct diff_filespec *one, | |
2066 | struct diff_filespec *two, | |
2067 | const char *xfrm_msg, | |
2068 | int complete_rewrite) | |
2069 | { | |
2070 | const char *spawn_arg[10]; | |
6973dcae | 2071 | int retval; |
6973dcae JH |
2072 | const char **arg = &spawn_arg[0]; |
2073 | ||
6973dcae | 2074 | if (one && two) { |
479b0ae8 JK |
2075 | struct diff_tempfile *temp_one, *temp_two; |
2076 | const char *othername = (other ? other : name); | |
2077 | temp_one = prepare_temp_file(name, one); | |
2078 | temp_two = prepare_temp_file(othername, two); | |
6973dcae JH |
2079 | *arg++ = pgm; |
2080 | *arg++ = name; | |
479b0ae8 JK |
2081 | *arg++ = temp_one->name; |
2082 | *arg++ = temp_one->hex; | |
2083 | *arg++ = temp_one->mode; | |
2084 | *arg++ = temp_two->name; | |
2085 | *arg++ = temp_two->hex; | |
2086 | *arg++ = temp_two->mode; | |
6973dcae JH |
2087 | if (other) { |
2088 | *arg++ = other; | |
2089 | *arg++ = xfrm_msg; | |
2090 | } | |
2091 | } else { | |
2092 | *arg++ = pgm; | |
2093 | *arg++ = name; | |
2094 | } | |
2095 | *arg = NULL; | |
d5535ec7 JS |
2096 | fflush(NULL); |
2097 | retval = run_command_v_opt(spawn_arg, 0); | |
6973dcae JH |
2098 | remove_tempfile(); |
2099 | if (retval) { | |
2100 | fprintf(stderr, "external diff died, stopping at %s.\n", name); | |
2101 | exit(1); | |
2102 | } | |
2103 | } | |
2104 | ||
b67b9612 JH |
2105 | static int similarity_index(struct diff_filepair *p) |
2106 | { | |
2107 | return p->score * 100 / MAX_SCORE; | |
2108 | } | |
2109 | ||
2110 | static void fill_metainfo(struct strbuf *msg, | |
2111 | const char *name, | |
2112 | const char *other, | |
2113 | struct diff_filespec *one, | |
2114 | struct diff_filespec *two, | |
2115 | struct diff_options *o, | |
2116 | struct diff_filepair *p) | |
2117 | { | |
2118 | strbuf_init(msg, PATH_MAX * 2 + 300); | |
2119 | switch (p->status) { | |
2120 | case DIFF_STATUS_COPIED: | |
2121 | strbuf_addf(msg, "similarity index %d%%", similarity_index(p)); | |
2122 | strbuf_addstr(msg, "\ncopy from "); | |
2123 | quote_c_style(name, msg, NULL, 0); | |
2124 | strbuf_addstr(msg, "\ncopy to "); | |
2125 | quote_c_style(other, msg, NULL, 0); | |
2126 | strbuf_addch(msg, '\n'); | |
2127 | break; | |
2128 | case DIFF_STATUS_RENAMED: | |
2129 | strbuf_addf(msg, "similarity index %d%%", similarity_index(p)); | |
2130 | strbuf_addstr(msg, "\nrename from "); | |
2131 | quote_c_style(name, msg, NULL, 0); | |
2132 | strbuf_addstr(msg, "\nrename to "); | |
2133 | quote_c_style(other, msg, NULL, 0); | |
2134 | strbuf_addch(msg, '\n'); | |
2135 | break; | |
2136 | case DIFF_STATUS_MODIFIED: | |
2137 | if (p->score) { | |
2138 | strbuf_addf(msg, "dissimilarity index %d%%\n", | |
2139 | similarity_index(p)); | |
2140 | break; | |
2141 | } | |
2142 | /* fallthru */ | |
2143 | default: | |
2144 | /* nothing */ | |
2145 | ; | |
2146 | } | |
2147 | if (one && two && hashcmp(one->sha1, two->sha1)) { | |
2148 | int abbrev = DIFF_OPT_TST(o, FULL_INDEX) ? 40 : DEFAULT_ABBREV; | |
2149 | ||
2150 | if (DIFF_OPT_TST(o, BINARY)) { | |
2151 | mmfile_t mf; | |
2152 | if ((!fill_mmfile(&mf, one) && diff_filespec_is_binary(one)) || | |
2153 | (!fill_mmfile(&mf, two) && diff_filespec_is_binary(two))) | |
2154 | abbrev = 40; | |
2155 | } | |
2156 | strbuf_addf(msg, "index %.*s..%.*s", | |
2157 | abbrev, sha1_to_hex(one->sha1), | |
2158 | abbrev, sha1_to_hex(two->sha1)); | |
2159 | if (one->mode == two->mode) | |
2160 | strbuf_addf(msg, " %06o", one->mode); | |
2161 | strbuf_addch(msg, '\n'); | |
2162 | } | |
2163 | if (msg->len) | |
2164 | strbuf_setlen(msg, msg->len - 1); | |
2165 | } | |
2166 | ||
6973dcae JH |
2167 | static void run_diff_cmd(const char *pgm, |
2168 | const char *name, | |
2169 | const char *other, | |
cd676a51 | 2170 | const char *attr_path, |
6973dcae JH |
2171 | struct diff_filespec *one, |
2172 | struct diff_filespec *two, | |
b67b9612 | 2173 | struct strbuf *msg, |
051308f6 | 2174 | struct diff_options *o, |
b67b9612 | 2175 | struct diff_filepair *p) |
6973dcae | 2176 | { |
b67b9612 JH |
2177 | const char *xfrm_msg = NULL; |
2178 | int complete_rewrite = (p->status == DIFF_STATUS_MODIFIED) && p->score; | |
2179 | ||
2180 | if (msg) { | |
2181 | fill_metainfo(msg, name, other, one, two, o, p); | |
2182 | xfrm_msg = msg->len ? msg->buf : NULL; | |
2183 | } | |
2184 | ||
8f67f8ae | 2185 | if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL)) |
f1af60bd JH |
2186 | pgm = NULL; |
2187 | else { | |
be58e70d JK |
2188 | struct userdiff_driver *drv = userdiff_find_by_path(attr_path); |
2189 | if (drv && drv->external) | |
2190 | pgm = drv->external; | |
f1af60bd JH |
2191 | } |
2192 | ||
6973dcae JH |
2193 | if (pgm) { |
2194 | run_external_diff(pgm, name, other, one, two, xfrm_msg, | |
2195 | complete_rewrite); | |
2196 | return; | |
2197 | } | |
2198 | if (one && two) | |
2199 | builtin_diff(name, other ? other : name, | |
051308f6 | 2200 | one, two, xfrm_msg, o, complete_rewrite); |
6973dcae | 2201 | else |
c0c77734 | 2202 | fprintf(o->file, "* Unmerged path %s\n", name); |
6973dcae JH |
2203 | } |
2204 | ||
2205 | static void diff_fill_sha1_info(struct diff_filespec *one) | |
2206 | { | |
2207 | if (DIFF_FILE_VALID(one)) { | |
2208 | if (!one->sha1_valid) { | |
2209 | struct stat st; | |
5332b2af JS |
2210 | if (!strcmp(one->path, "-")) { |
2211 | hashcpy(one->sha1, null_sha1); | |
2212 | return; | |
2213 | } | |
6973dcae JH |
2214 | if (lstat(one->path, &st) < 0) |
2215 | die("stat %s", one->path); | |
2216 | if (index_path(one->sha1, one->path, &st, 0)) | |
d7530708 | 2217 | die("cannot hash %s", one->path); |
6973dcae JH |
2218 | } |
2219 | } | |
2220 | else | |
e702496e | 2221 | hashclr(one->sha1); |
6973dcae JH |
2222 | } |
2223 | ||
cd676a51 JH |
2224 | static void strip_prefix(int prefix_length, const char **namep, const char **otherp) |
2225 | { | |
2226 | /* Strip the prefix but do not molest /dev/null and absolute paths */ | |
2227 | if (*namep && **namep != '/') | |
2228 | *namep += prefix_length; | |
2229 | if (*otherp && **otherp != '/') | |
2230 | *otherp += prefix_length; | |
2231 | } | |
2232 | ||
6973dcae JH |
2233 | static void run_diff(struct diff_filepair *p, struct diff_options *o) |
2234 | { | |
2235 | const char *pgm = external_diff(); | |
663af342 | 2236 | struct strbuf msg; |
663af342 PH |
2237 | struct diff_filespec *one = p->one; |
2238 | struct diff_filespec *two = p->two; | |
6973dcae JH |
2239 | const char *name; |
2240 | const char *other; | |
cd676a51 | 2241 | const char *attr_path; |
663af342 | 2242 | |
cd676a51 JH |
2243 | name = p->one->path; |
2244 | other = (strcmp(name, p->two->path) ? p->two->path : NULL); | |
2245 | attr_path = name; | |
2246 | if (o->prefix_length) | |
2247 | strip_prefix(o->prefix_length, &name, &other); | |
6973dcae JH |
2248 | |
2249 | if (DIFF_PAIR_UNMERGED(p)) { | |
cd676a51 | 2250 | run_diff_cmd(pgm, name, NULL, attr_path, |
b67b9612 | 2251 | NULL, NULL, NULL, o, p); |
6973dcae JH |
2252 | return; |
2253 | } | |
2254 | ||
6973dcae JH |
2255 | diff_fill_sha1_info(one); |
2256 | diff_fill_sha1_info(two); | |
2257 | ||
6973dcae JH |
2258 | if (!pgm && |
2259 | DIFF_FILE_VALID(one) && DIFF_FILE_VALID(two) && | |
2260 | (S_IFMT & one->mode) != (S_IFMT & two->mode)) { | |
b67b9612 JH |
2261 | /* |
2262 | * a filepair that changes between file and symlink | |
6973dcae JH |
2263 | * needs to be split into deletion and creation. |
2264 | */ | |
2265 | struct diff_filespec *null = alloc_filespec(two->path); | |
cd676a51 | 2266 | run_diff_cmd(NULL, name, other, attr_path, |
b67b9612 | 2267 | one, null, &msg, o, p); |
6973dcae | 2268 | free(null); |
b67b9612 JH |
2269 | strbuf_release(&msg); |
2270 | ||
6973dcae | 2271 | null = alloc_filespec(one->path); |
cd676a51 | 2272 | run_diff_cmd(NULL, name, other, attr_path, |
b67b9612 | 2273 | null, two, &msg, o, p); |
6973dcae JH |
2274 | free(null); |
2275 | } | |
2276 | else | |
cd676a51 | 2277 | run_diff_cmd(pgm, name, other, attr_path, |
b67b9612 | 2278 | one, two, &msg, o, p); |
6973dcae | 2279 | |
663af342 | 2280 | strbuf_release(&msg); |
6973dcae JH |
2281 | } |
2282 | ||
2283 | static void run_diffstat(struct diff_filepair *p, struct diff_options *o, | |
2284 | struct diffstat_t *diffstat) | |
2285 | { | |
2286 | const char *name; | |
2287 | const char *other; | |
710158e3 | 2288 | int complete_rewrite = 0; |
6973dcae JH |
2289 | |
2290 | if (DIFF_PAIR_UNMERGED(p)) { | |
2291 | /* unmerged */ | |
0d21efa5 | 2292 | builtin_diffstat(p->one->path, NULL, NULL, NULL, diffstat, o, 0); |
6973dcae JH |
2293 | return; |
2294 | } | |
2295 | ||
2296 | name = p->one->path; | |
2297 | other = (strcmp(name, p->two->path) ? p->two->path : NULL); | |
2298 | ||
cd676a51 JH |
2299 | if (o->prefix_length) |
2300 | strip_prefix(o->prefix_length, &name, &other); | |
2301 | ||
6973dcae JH |
2302 | diff_fill_sha1_info(p->one); |
2303 | diff_fill_sha1_info(p->two); | |
2304 | ||
710158e3 JH |
2305 | if (p->status == DIFF_STATUS_MODIFIED && p->score) |
2306 | complete_rewrite = 1; | |
0d21efa5 | 2307 | builtin_diffstat(name, other, p->one, p->two, diffstat, o, complete_rewrite); |
6973dcae JH |
2308 | } |
2309 | ||
88246898 JS |
2310 | static void run_checkdiff(struct diff_filepair *p, struct diff_options *o) |
2311 | { | |
2312 | const char *name; | |
2313 | const char *other; | |
cd676a51 | 2314 | const char *attr_path; |
88246898 JS |
2315 | |
2316 | if (DIFF_PAIR_UNMERGED(p)) { | |
2317 | /* unmerged */ | |
2318 | return; | |
2319 | } | |
2320 | ||
2321 | name = p->one->path; | |
2322 | other = (strcmp(name, p->two->path) ? p->two->path : NULL); | |
cd676a51 JH |
2323 | attr_path = other ? other : name; |
2324 | ||
2325 | if (o->prefix_length) | |
2326 | strip_prefix(o->prefix_length, &name, &other); | |
88246898 JS |
2327 | |
2328 | diff_fill_sha1_info(p->one); | |
2329 | diff_fill_sha1_info(p->two); | |
2330 | ||
cd676a51 | 2331 | builtin_checkdiff(name, other, attr_path, p->one, p->two, o); |
88246898 JS |
2332 | } |
2333 | ||
6973dcae JH |
2334 | void diff_setup(struct diff_options *options) |
2335 | { | |
2336 | memset(options, 0, sizeof(*options)); | |
c0c77734 DB |
2337 | |
2338 | options->file = stdout; | |
2339 | ||
6973dcae JH |
2340 | options->line_termination = '\n'; |
2341 | options->break_opt = -1; | |
2342 | options->rename_limit = -1; | |
7df7c019 | 2343 | options->dirstat_percent = 3; |
ee1e5412 | 2344 | options->context = 3; |
6973dcae JH |
2345 | |
2346 | options->change = diff_change; | |
2347 | options->add_remove = diff_addremove; | |
6b2f2d98 | 2348 | if (diff_use_color_default > 0) |
8f67f8ae | 2349 | DIFF_OPT_SET(options, COLOR_DIFF); |
b68ea12e | 2350 | options->detect_rename = diff_detect_rename_default; |
eab9a40b | 2351 | |
a5a818ee JH |
2352 | if (!diff_mnemonic_prefix) { |
2353 | options->a_prefix = "a/"; | |
2354 | options->b_prefix = "b/"; | |
2355 | } | |
6973dcae JH |
2356 | } |
2357 | ||
2358 | int diff_setup_done(struct diff_options *options) | |
2359 | { | |
d7de00f7 TH |
2360 | int count = 0; |
2361 | ||
2362 | if (options->output_format & DIFF_FORMAT_NAME) | |
2363 | count++; | |
2364 | if (options->output_format & DIFF_FORMAT_NAME_STATUS) | |
2365 | count++; | |
2366 | if (options->output_format & DIFF_FORMAT_CHECKDIFF) | |
2367 | count++; | |
2368 | if (options->output_format & DIFF_FORMAT_NO_OUTPUT) | |
2369 | count++; | |
2370 | if (count > 1) | |
2371 | die("--name-only, --name-status, --check and -s are mutually exclusive"); | |
2372 | ||
8f67f8ae | 2373 | if (DIFF_OPT_TST(options, FIND_COPIES_HARDER)) |
03b9d560 JH |
2374 | options->detect_rename = DIFF_DETECT_COPY; |
2375 | ||
cd676a51 JH |
2376 | if (!DIFF_OPT_TST(options, RELATIVE_NAME)) |
2377 | options->prefix = NULL; | |
2378 | if (options->prefix) | |
2379 | options->prefix_length = strlen(options->prefix); | |
2380 | else | |
2381 | options->prefix_length = 0; | |
2382 | ||
c6744349 TH |
2383 | if (options->output_format & (DIFF_FORMAT_NAME | |
2384 | DIFF_FORMAT_NAME_STATUS | | |
2385 | DIFF_FORMAT_CHECKDIFF | | |
2386 | DIFF_FORMAT_NO_OUTPUT)) | |
2387 | options->output_format &= ~(DIFF_FORMAT_RAW | | |
74e2abe5 | 2388 | DIFF_FORMAT_NUMSTAT | |
c6744349 | 2389 | DIFF_FORMAT_DIFFSTAT | |
ebd124c6 | 2390 | DIFF_FORMAT_SHORTSTAT | |
7df7c019 | 2391 | DIFF_FORMAT_DIRSTAT | |
c6744349 TH |
2392 | DIFF_FORMAT_SUMMARY | |
2393 | DIFF_FORMAT_PATCH); | |
2394 | ||
6973dcae JH |
2395 | /* |
2396 | * These cases always need recursive; we do not drop caller-supplied | |
2397 | * recursive bits for other formats here. | |
2398 | */ | |
c6744349 | 2399 | if (options->output_format & (DIFF_FORMAT_PATCH | |
74e2abe5 | 2400 | DIFF_FORMAT_NUMSTAT | |
c6744349 | 2401 | DIFF_FORMAT_DIFFSTAT | |
ebd124c6 | 2402 | DIFF_FORMAT_SHORTSTAT | |
7df7c019 | 2403 | DIFF_FORMAT_DIRSTAT | |
d7014dc0 | 2404 | DIFF_FORMAT_SUMMARY | |
c6744349 | 2405 | DIFF_FORMAT_CHECKDIFF)) |
8f67f8ae | 2406 | DIFF_OPT_SET(options, RECURSIVE); |
5e363541 | 2407 | /* |
3969cf7d | 2408 | * Also pickaxe would not work very well if you do not say recursive |
5e363541 | 2409 | */ |
3969cf7d | 2410 | if (options->pickaxe) |
8f67f8ae | 2411 | DIFF_OPT_SET(options, RECURSIVE); |
5e363541 | 2412 | |
6973dcae JH |
2413 | if (options->detect_rename && options->rename_limit < 0) |
2414 | options->rename_limit = diff_rename_limit_default; | |
2415 | if (options->setup & DIFF_SETUP_USE_CACHE) { | |
2416 | if (!active_cache) | |
2417 | /* read-cache does not die even when it fails | |
2418 | * so it is safe for us to do this here. Also | |
2419 | * it does not smudge active_cache or active_nr | |
2420 | * when it fails, so we do not have to worry about | |
2421 | * cleaning it up ourselves either. | |
2422 | */ | |
2423 | read_cache(); | |
2424 | } | |
6973dcae JH |
2425 | if (options->abbrev <= 0 || 40 < options->abbrev) |
2426 | options->abbrev = 40; /* full */ | |
2427 | ||
68aacb2f JH |
2428 | /* |
2429 | * It does not make sense to show the first hit we happened | |
2430 | * to have found. It does not make sense not to return with | |
2431 | * exit code in such a case either. | |
2432 | */ | |
8f67f8ae | 2433 | if (DIFF_OPT_TST(options, QUIET)) { |
68aacb2f | 2434 | options->output_format = DIFF_FORMAT_NO_OUTPUT; |
8f67f8ae | 2435 | DIFF_OPT_SET(options, EXIT_WITH_STATUS); |
68aacb2f JH |
2436 | } |
2437 | ||
6973dcae JH |
2438 | return 0; |
2439 | } | |
2440 | ||
d2543b8e | 2441 | static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *val) |
ee1e5412 LT |
2442 | { |
2443 | char c, *eq; | |
2444 | int len; | |
2445 | ||
2446 | if (*arg != '-') | |
2447 | return 0; | |
2448 | c = *++arg; | |
2449 | if (!c) | |
2450 | return 0; | |
2451 | if (c == arg_short) { | |
2452 | c = *++arg; | |
2453 | if (!c) | |
2454 | return 1; | |
2455 | if (val && isdigit(c)) { | |
2456 | char *end; | |
2457 | int n = strtoul(arg, &end, 10); | |
2458 | if (*end) | |
2459 | return 0; | |
2460 | *val = n; | |
2461 | return 1; | |
2462 | } | |
2463 | return 0; | |
2464 | } | |
2465 | if (c != '-') | |
2466 | return 0; | |
2467 | arg++; | |
2468 | eq = strchr(arg, '='); | |
2469 | if (eq) | |
2470 | len = eq - arg; | |
2471 | else | |
2472 | len = strlen(arg); | |
2473 | if (!len || strncmp(arg, arg_long, len)) | |
2474 | return 0; | |
2475 | if (eq) { | |
2476 | int n; | |
2477 | char *end; | |
2478 | if (!isdigit(*++eq)) | |
2479 | return 0; | |
2480 | n = strtoul(eq, &end, 10); | |
2481 | if (*end) | |
2482 | return 0; | |
2483 | *val = n; | |
2484 | } | |
2485 | return 1; | |
2486 | } | |
2487 | ||
16befb8b JH |
2488 | static int diff_scoreopt_parse(const char *opt); |
2489 | ||
6973dcae JH |
2490 | int diff_opt_parse(struct diff_options *options, const char **av, int ac) |
2491 | { | |
2492 | const char *arg = av[0]; | |
d054680c PH |
2493 | |
2494 | /* Output format options */ | |
6973dcae | 2495 | if (!strcmp(arg, "-p") || !strcmp(arg, "-u")) |
c6744349 | 2496 | options->output_format |= DIFF_FORMAT_PATCH; |
ee1e5412 | 2497 | else if (opt_arg(arg, 'U', "unified", &options->context)) |
c6744349 | 2498 | options->output_format |= DIFF_FORMAT_PATCH; |
a610786f TH |
2499 | else if (!strcmp(arg, "--raw")) |
2500 | options->output_format |= DIFF_FORMAT_RAW; | |
8f67f8ae | 2501 | else if (!strcmp(arg, "--patch-with-raw")) |
c6744349 | 2502 | options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW; |
8f67f8ae | 2503 | else if (!strcmp(arg, "--numstat")) |
74e2abe5 | 2504 | options->output_format |= DIFF_FORMAT_NUMSTAT; |
8f67f8ae | 2505 | else if (!strcmp(arg, "--shortstat")) |
ebd124c6 | 2506 | options->output_format |= DIFF_FORMAT_SHORTSTAT; |
7df7c019 LT |
2507 | else if (opt_arg(arg, 'X', "dirstat", &options->dirstat_percent)) |
2508 | options->output_format |= DIFF_FORMAT_DIRSTAT; | |
f88d225f JH |
2509 | else if (!strcmp(arg, "--cumulative")) { |
2510 | options->output_format |= DIFF_FORMAT_DIRSTAT; | |
2511 | DIFF_OPT_SET(options, DIRSTAT_CUMULATIVE); | |
fd33777b HO |
2512 | } else if (opt_arg(arg, 0, "dirstat-by-file", |
2513 | &options->dirstat_percent)) { | |
2514 | options->output_format |= DIFF_FORMAT_DIRSTAT; | |
2515 | DIFF_OPT_SET(options, DIRSTAT_BY_FILE); | |
f88d225f | 2516 | } |
d054680c PH |
2517 | else if (!strcmp(arg, "--check")) |
2518 | options->output_format |= DIFF_FORMAT_CHECKDIFF; | |
2519 | else if (!strcmp(arg, "--summary")) | |
2520 | options->output_format |= DIFF_FORMAT_SUMMARY; | |
2521 | else if (!strcmp(arg, "--patch-with-stat")) | |
2522 | options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT; | |
2523 | else if (!strcmp(arg, "--name-only")) | |
2524 | options->output_format |= DIFF_FORMAT_NAME; | |
2525 | else if (!strcmp(arg, "--name-status")) | |
2526 | options->output_format |= DIFF_FORMAT_NAME_STATUS; | |
2527 | else if (!strcmp(arg, "-s")) | |
2528 | options->output_format |= DIFF_FORMAT_NO_OUTPUT; | |
cc44c765 | 2529 | else if (!prefixcmp(arg, "--stat")) { |
5c5b2ea9 LT |
2530 | char *end; |
2531 | int width = options->stat_width; | |
2532 | int name_width = options->stat_name_width; | |
2533 | arg += 6; | |
2534 | end = (char *)arg; | |
2535 | ||
2536 | switch (*arg) { | |
2537 | case '-': | |
cc44c765 | 2538 | if (!prefixcmp(arg, "-width=")) |
5c5b2ea9 | 2539 | width = strtoul(arg + 7, &end, 10); |
cc44c765 | 2540 | else if (!prefixcmp(arg, "-name-width=")) |
5c5b2ea9 LT |
2541 | name_width = strtoul(arg + 12, &end, 10); |
2542 | break; | |
2543 | case '=': | |
2544 | width = strtoul(arg+1, &end, 10); | |
2545 | if (*end == ',') | |
2546 | name_width = strtoul(end+1, &end, 10); | |
2547 | } | |
2548 | ||
2549 | /* Important! This checks all the error cases! */ | |
2550 | if (*end) | |
2551 | return 0; | |
c6744349 | 2552 | options->output_format |= DIFF_FORMAT_DIFFSTAT; |
5c5b2ea9 LT |
2553 | options->stat_name_width = name_width; |
2554 | options->stat_width = width; | |
a2540023 | 2555 | } |
d054680c PH |
2556 | |
2557 | /* renames options */ | |
cc44c765 | 2558 | else if (!prefixcmp(arg, "-B")) { |
8f67f8ae | 2559 | if ((options->break_opt = diff_scoreopt_parse(arg)) == -1) |
6973dcae JH |
2560 | return -1; |
2561 | } | |
cc44c765 | 2562 | else if (!prefixcmp(arg, "-M")) { |
8f67f8ae | 2563 | if ((options->rename_score = diff_scoreopt_parse(arg)) == -1) |
6973dcae JH |
2564 | return -1; |
2565 | options->detect_rename = DIFF_DETECT_RENAME; | |
2566 | } | |
cc44c765 | 2567 | else if (!prefixcmp(arg, "-C")) { |
ca6c0970 | 2568 | if (options->detect_rename == DIFF_DETECT_COPY) |
8f67f8ae PH |
2569 | DIFF_OPT_SET(options, FIND_COPIES_HARDER); |
2570 | if ((options->rename_score = diff_scoreopt_parse(arg)) == -1) | |
6973dcae JH |
2571 | return -1; |
2572 | options->detect_rename = DIFF_DETECT_COPY; | |
2573 | } | |
d054680c PH |
2574 | else if (!strcmp(arg, "--no-renames")) |
2575 | options->detect_rename = 0; | |
cd676a51 JH |
2576 | else if (!strcmp(arg, "--relative")) |
2577 | DIFF_OPT_SET(options, RELATIVE_NAME); | |
c0cb4a06 JH |
2578 | else if (!prefixcmp(arg, "--relative=")) { |
2579 | DIFF_OPT_SET(options, RELATIVE_NAME); | |
2580 | options->prefix = arg + 11; | |
2581 | } | |
d054680c PH |
2582 | |
2583 | /* xdiff options */ | |
2584 | else if (!strcmp(arg, "-w") || !strcmp(arg, "--ignore-all-space")) | |
628d5c2b | 2585 | DIFF_XDL_SET(options, IGNORE_WHITESPACE); |
d054680c | 2586 | else if (!strcmp(arg, "-b") || !strcmp(arg, "--ignore-space-change")) |
628d5c2b | 2587 | DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE); |
d054680c | 2588 | else if (!strcmp(arg, "--ignore-space-at-eol")) |
628d5c2b | 2589 | DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL); |
34292bdd | 2590 | else if (!strcmp(arg, "--patience")) |
628d5c2b | 2591 | DIFF_XDL_SET(options, PATIENCE_DIFF); |
d054680c PH |
2592 | |
2593 | /* flags options */ | |
2594 | else if (!strcmp(arg, "--binary")) { | |
2595 | options->output_format |= DIFF_FORMAT_PATCH; | |
2596 | DIFF_OPT_SET(options, BINARY); | |
2597 | } | |
2598 | else if (!strcmp(arg, "--full-index")) | |
2599 | DIFF_OPT_SET(options, FULL_INDEX); | |
2600 | else if (!strcmp(arg, "-a") || !strcmp(arg, "--text")) | |
2601 | DIFF_OPT_SET(options, TEXT); | |
2602 | else if (!strcmp(arg, "-R")) | |
2603 | DIFF_OPT_SET(options, REVERSE_DIFF); | |
6973dcae | 2604 | else if (!strcmp(arg, "--find-copies-harder")) |
8f67f8ae | 2605 | DIFF_OPT_SET(options, FIND_COPIES_HARDER); |
750f7b66 | 2606 | else if (!strcmp(arg, "--follow")) |
8f67f8ae | 2607 | DIFF_OPT_SET(options, FOLLOW_RENAMES); |
cd112cef | 2608 | else if (!strcmp(arg, "--color")) |
8f67f8ae | 2609 | DIFF_OPT_SET(options, COLOR_DIFF); |
fef88bb0 | 2610 | else if (!strcmp(arg, "--no-color")) |
8f67f8ae | 2611 | DIFF_OPT_CLR(options, COLOR_DIFF); |
628d5c2b KC |
2612 | else if (!strcmp(arg, "--color-words")) { |
2613 | DIFF_OPT_SET(options, COLOR_DIFF); | |
2614 | DIFF_OPT_SET(options, COLOR_DIFF_WORDS); | |
2615 | } | |
2b6a5417 | 2616 | else if (!prefixcmp(arg, "--color-words=")) { |
628d5c2b KC |
2617 | DIFF_OPT_SET(options, COLOR_DIFF); |
2618 | DIFF_OPT_SET(options, COLOR_DIFF_WORDS); | |
2b6a5417 JS |
2619 | options->word_regex = arg + 14; |
2620 | } | |
41bbf9d5 | 2621 | else if (!strcmp(arg, "--exit-code")) |
8f67f8ae | 2622 | DIFF_OPT_SET(options, EXIT_WITH_STATUS); |
68aacb2f | 2623 | else if (!strcmp(arg, "--quiet")) |
8f67f8ae | 2624 | DIFF_OPT_SET(options, QUIET); |
72909bef | 2625 | else if (!strcmp(arg, "--ext-diff")) |
8f67f8ae | 2626 | DIFF_OPT_SET(options, ALLOW_EXTERNAL); |
72909bef | 2627 | else if (!strcmp(arg, "--no-ext-diff")) |
8f67f8ae | 2628 | DIFF_OPT_CLR(options, ALLOW_EXTERNAL); |
e10ea812 JK |
2629 | else if (!strcmp(arg, "--textconv")) |
2630 | DIFF_OPT_SET(options, ALLOW_TEXTCONV); | |
2631 | else if (!strcmp(arg, "--no-textconv")) | |
2632 | DIFF_OPT_CLR(options, ALLOW_TEXTCONV); | |
50fd9bd8 JS |
2633 | else if (!strcmp(arg, "--ignore-submodules")) |
2634 | DIFF_OPT_SET(options, IGNORE_SUBMODULES); | |
d054680c PH |
2635 | |
2636 | /* misc options */ | |
2637 | else if (!strcmp(arg, "-z")) | |
2638 | options->line_termination = 0; | |
2639 | else if (!prefixcmp(arg, "-l")) | |
2640 | options->rename_limit = strtoul(arg+2, NULL, 10); | |
2641 | else if (!prefixcmp(arg, "-S")) | |
2642 | options->pickaxe = arg + 2; | |
2643 | else if (!strcmp(arg, "--pickaxe-all")) | |
2644 | options->pickaxe_opts = DIFF_PICKAXE_ALL; | |
2645 | else if (!strcmp(arg, "--pickaxe-regex")) | |
2646 | options->pickaxe_opts = DIFF_PICKAXE_REGEX; | |
2647 | else if (!prefixcmp(arg, "-O")) | |
2648 | options->orderfile = arg + 2; | |
2649 | else if (!prefixcmp(arg, "--diff-filter=")) | |
2650 | options->filter = arg + 14; | |
2651 | else if (!strcmp(arg, "--abbrev")) | |
2652 | options->abbrev = DEFAULT_ABBREV; | |
2653 | else if (!prefixcmp(arg, "--abbrev=")) { | |
2654 | options->abbrev = strtoul(arg + 9, NULL, 10); | |
2655 | if (options->abbrev < MINIMUM_ABBREV) | |
2656 | options->abbrev = MINIMUM_ABBREV; | |
2657 | else if (40 < options->abbrev) | |
2658 | options->abbrev = 40; | |
2659 | } | |
eab9a40b JS |
2660 | else if (!prefixcmp(arg, "--src-prefix=")) |
2661 | options->a_prefix = arg + 13; | |
2662 | else if (!prefixcmp(arg, "--dst-prefix=")) | |
2663 | options->b_prefix = arg + 13; | |
2664 | else if (!strcmp(arg, "--no-prefix")) | |
2665 | options->a_prefix = options->b_prefix = ""; | |
6d0e674a RS |
2666 | else if (opt_arg(arg, '\0', "inter-hunk-context", |
2667 | &options->interhunkcontext)) | |
2668 | ; | |
c0c77734 DB |
2669 | else if (!prefixcmp(arg, "--output=")) { |
2670 | options->file = fopen(arg + strlen("--output="), "w"); | |
2671 | options->close_file = 1; | |
2672 | } else | |
6973dcae JH |
2673 | return 0; |
2674 | return 1; | |
2675 | } | |
2676 | ||
2677 | static int parse_num(const char **cp_p) | |
2678 | { | |
2679 | unsigned long num, scale; | |
2680 | int ch, dot; | |
2681 | const char *cp = *cp_p; | |
2682 | ||
2683 | num = 0; | |
2684 | scale = 1; | |
2685 | dot = 0; | |
2686 | for(;;) { | |
2687 | ch = *cp; | |
2688 | if ( !dot && ch == '.' ) { | |
2689 | scale = 1; | |
2690 | dot = 1; | |
2691 | } else if ( ch == '%' ) { | |
2692 | scale = dot ? scale*100 : 100; | |
2693 | cp++; /* % is always at the end */ | |
2694 | break; | |
2695 | } else if ( ch >= '0' && ch <= '9' ) { | |
2696 | if ( scale < 100000 ) { | |
2697 | scale *= 10; | |
2698 | num = (num*10) + (ch-'0'); | |
2699 | } | |
2700 | } else { | |
2701 | break; | |
2702 | } | |
2703 | cp++; | |
2704 | } | |
2705 | *cp_p = cp; | |
2706 | ||
2707 | /* user says num divided by scale and we say internally that | |
2708 | * is MAX_SCORE * num / scale. | |
2709 | */ | |
dc49cd76 | 2710 | return (int)((num >= scale) ? MAX_SCORE : (MAX_SCORE * num / scale)); |
6973dcae JH |
2711 | } |
2712 | ||
16befb8b | 2713 | static int diff_scoreopt_parse(const char *opt) |
6973dcae JH |
2714 | { |
2715 | int opt1, opt2, cmd; | |
2716 | ||
2717 | if (*opt++ != '-') | |
2718 | return -1; | |
2719 | cmd = *opt++; | |
2720 | if (cmd != 'M' && cmd != 'C' && cmd != 'B') | |
2721 | return -1; /* that is not a -M, -C nor -B option */ | |
2722 | ||
2723 | opt1 = parse_num(&opt); | |
2724 | if (cmd != 'B') | |
2725 | opt2 = 0; | |
2726 | else { | |
2727 | if (*opt == 0) | |
2728 | opt2 = 0; | |
2729 | else if (*opt != '/') | |
2730 | return -1; /* we expect -B80/99 or -B80 */ | |
2731 | else { | |
2732 | opt++; | |
2733 | opt2 = parse_num(&opt); | |
2734 | } | |
2735 | } | |
2736 | if (*opt != 0) | |
2737 | return -1; | |
2738 | return opt1 | (opt2 << 16); | |
2739 | } | |
2740 | ||
2741 | struct diff_queue_struct diff_queued_diff; | |
2742 | ||
2743 | void diff_q(struct diff_queue_struct *queue, struct diff_filepair *dp) | |
2744 | { | |
2745 | if (queue->alloc <= queue->nr) { | |
2746 | queue->alloc = alloc_nr(queue->alloc); | |
2747 | queue->queue = xrealloc(queue->queue, | |
2748 | sizeof(dp) * queue->alloc); | |
2749 | } | |
2750 | queue->queue[queue->nr++] = dp; | |
2751 | } | |
2752 | ||
2753 | struct diff_filepair *diff_queue(struct diff_queue_struct *queue, | |
2754 | struct diff_filespec *one, | |
2755 | struct diff_filespec *two) | |
2756 | { | |
ef677686 | 2757 | struct diff_filepair *dp = xcalloc(1, sizeof(*dp)); |
6973dcae JH |
2758 | dp->one = one; |
2759 | dp->two = two; | |
6973dcae JH |
2760 | if (queue) |
2761 | diff_q(queue, dp); | |
2762 | return dp; | |
2763 | } | |
2764 | ||
2765 | void diff_free_filepair(struct diff_filepair *p) | |
2766 | { | |
9fb88419 LT |
2767 | free_filespec(p->one); |
2768 | free_filespec(p->two); | |
6973dcae JH |
2769 | free(p); |
2770 | } | |
2771 | ||
2772 | /* This is different from find_unique_abbrev() in that | |
2773 | * it stuffs the result with dots for alignment. | |
2774 | */ | |
2775 | const char *diff_unique_abbrev(const unsigned char *sha1, int len) | |
2776 | { | |
2777 | int abblen; | |
2778 | const char *abbrev; | |
2779 | if (len == 40) | |
2780 | return sha1_to_hex(sha1); | |
2781 | ||
2782 | abbrev = find_unique_abbrev(sha1, len); | |
6973dcae JH |
2783 | abblen = strlen(abbrev); |
2784 | if (abblen < 37) { | |
2785 | static char hex[41]; | |
2786 | if (len < abblen && abblen <= len + 2) | |
2787 | sprintf(hex, "%s%.*s", abbrev, len+3-abblen, ".."); | |
2788 | else | |
2789 | sprintf(hex, "%s...", abbrev); | |
2790 | return hex; | |
2791 | } | |
2792 | return sha1_to_hex(sha1); | |
2793 | } | |
2794 | ||
663af342 | 2795 | static void diff_flush_raw(struct diff_filepair *p, struct diff_options *opt) |
6973dcae | 2796 | { |
663af342 PH |
2797 | int line_termination = opt->line_termination; |
2798 | int inter_name_termination = line_termination ? '\t' : '\0'; | |
6973dcae | 2799 | |
663af342 | 2800 | if (!(opt->output_format & DIFF_FORMAT_NAME_STATUS)) { |
c0c77734 DB |
2801 | fprintf(opt->file, ":%06o %06o %s ", p->one->mode, p->two->mode, |
2802 | diff_unique_abbrev(p->one->sha1, opt->abbrev)); | |
2803 | fprintf(opt->file, "%s ", diff_unique_abbrev(p->two->sha1, opt->abbrev)); | |
6973dcae | 2804 | } |
663af342 | 2805 | if (p->score) { |
c0c77734 DB |
2806 | fprintf(opt->file, "%c%03d%c", p->status, similarity_index(p), |
2807 | inter_name_termination); | |
663af342 | 2808 | } else { |
c0c77734 | 2809 | fprintf(opt->file, "%c%c", p->status, inter_name_termination); |
6973dcae | 2810 | } |
6973dcae | 2811 | |
cd676a51 JH |
2812 | if (p->status == DIFF_STATUS_COPIED || |
2813 | p->status == DIFF_STATUS_RENAMED) { | |
2814 | const char *name_a, *name_b; | |
2815 | name_a = p->one->path; | |
2816 | name_b = p->two->path; | |
2817 | strip_prefix(opt->prefix_length, &name_a, &name_b); | |
c0c77734 DB |
2818 | write_name_quoted(name_a, opt->file, inter_name_termination); |
2819 | write_name_quoted(name_b, opt->file, line_termination); | |
663af342 | 2820 | } else { |
cd676a51 JH |
2821 | const char *name_a, *name_b; |
2822 | name_a = p->one->mode ? p->one->path : p->two->path; | |
2823 | name_b = NULL; | |
2824 | strip_prefix(opt->prefix_length, &name_a, &name_b); | |
c0c77734 | 2825 | write_name_quoted(name_a, opt->file, line_termination); |
663af342 | 2826 | } |
6973dcae JH |
2827 | } |
2828 | ||
2829 | int diff_unmodified_pair(struct diff_filepair *p) | |
2830 | { | |
2831 | /* This function is written stricter than necessary to support | |
2832 | * the currently implemented transformers, but the idea is to | |
2833 | * let transformers to produce diff_filepairs any way they want, | |
2834 | * and filter and clean them up here before producing the output. | |
2835 | */ | |
663af342 | 2836 | struct diff_filespec *one = p->one, *two = p->two; |
6973dcae JH |
2837 | |
2838 | if (DIFF_PAIR_UNMERGED(p)) | |
2839 | return 0; /* unmerged is interesting */ | |
2840 | ||
6973dcae JH |
2841 | /* deletion, addition, mode or type change |
2842 | * and rename are all interesting. | |
2843 | */ | |
2844 | if (DIFF_FILE_VALID(one) != DIFF_FILE_VALID(two) || | |
2845 | DIFF_PAIR_MODE_CHANGED(p) || | |
2846 | strcmp(one->path, two->path)) | |
2847 | return 0; | |
2848 | ||
2849 | /* both are valid and point at the same path. that is, we are | |
2850 | * dealing with a change. | |
2851 | */ | |
2852 | if (one->sha1_valid && two->sha1_valid && | |
a89fccd2 | 2853 | !hashcmp(one->sha1, two->sha1)) |
6973dcae JH |
2854 | return 1; /* no change */ |
2855 | if (!one->sha1_valid && !two->sha1_valid) | |
2856 | return 1; /* both look at the same file on the filesystem. */ | |
2857 | return 0; | |
2858 | } | |
2859 | ||
2860 | static void diff_flush_patch(struct diff_filepair *p, struct diff_options *o) | |
2861 | { | |
2862 | if (diff_unmodified_pair(p)) | |
2863 | return; | |
2864 | ||
2865 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || | |
2866 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
2867 | return; /* no tree diffs in patch format */ | |
2868 | ||
2869 | run_diff(p, o); | |
2870 | } | |
2871 | ||
2872 | static void diff_flush_stat(struct diff_filepair *p, struct diff_options *o, | |
2873 | struct diffstat_t *diffstat) | |
2874 | { | |
2875 | if (diff_unmodified_pair(p)) | |
2876 | return; | |
2877 | ||
2878 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || | |
2879 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
2880 | return; /* no tree diffs in patch format */ | |
2881 | ||
2882 | run_diffstat(p, o, diffstat); | |
2883 | } | |
2884 | ||
88246898 JS |
2885 | static void diff_flush_checkdiff(struct diff_filepair *p, |
2886 | struct diff_options *o) | |
2887 | { | |
2888 | if (diff_unmodified_pair(p)) | |
2889 | return; | |
2890 | ||
2891 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || | |
2892 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
2893 | return; /* no tree diffs in patch format */ | |
2894 | ||
2895 | run_checkdiff(p, o); | |
2896 | } | |
2897 | ||
6973dcae JH |
2898 | int diff_queue_is_empty(void) |
2899 | { | |
2900 | struct diff_queue_struct *q = &diff_queued_diff; | |
2901 | int i; | |
2902 | for (i = 0; i < q->nr; i++) | |
2903 | if (!diff_unmodified_pair(q->queue[i])) | |
2904 | return 0; | |
2905 | return 1; | |
2906 | } | |
2907 | ||
2908 | #if DIFF_DEBUG | |
2909 | void diff_debug_filespec(struct diff_filespec *s, int x, const char *one) | |
2910 | { | |
2911 | fprintf(stderr, "queue[%d] %s (%s) %s %06o %s\n", | |
2912 | x, one ? one : "", | |
2913 | s->path, | |
2914 | DIFF_FILE_VALID(s) ? "valid" : "invalid", | |
2915 | s->mode, | |
2916 | s->sha1_valid ? sha1_to_hex(s->sha1) : ""); | |
2917 | fprintf(stderr, "queue[%d] %s size %lu flags %d\n", | |
2918 | x, one ? one : "", | |
2919 | s->size, s->xfrm_flags); | |
2920 | } | |
2921 | ||
2922 | void diff_debug_filepair(const struct diff_filepair *p, int i) | |
2923 | { | |
2924 | diff_debug_filespec(p->one, i, "one"); | |
2925 | diff_debug_filespec(p->two, i, "two"); | |
64479711 | 2926 | fprintf(stderr, "score %d, status %c rename_used %d broken %d\n", |
6973dcae | 2927 | p->score, p->status ? p->status : '?', |
64479711 | 2928 | p->one->rename_used, p->broken_pair); |
6973dcae JH |
2929 | } |
2930 | ||
2931 | void diff_debug_queue(const char *msg, struct diff_queue_struct *q) | |
2932 | { | |
2933 | int i; | |
2934 | if (msg) | |
2935 | fprintf(stderr, "%s\n", msg); | |
2936 | fprintf(stderr, "q->nr = %d\n", q->nr); | |
2937 | for (i = 0; i < q->nr; i++) { | |
2938 | struct diff_filepair *p = q->queue[i]; | |
2939 | diff_debug_filepair(p, i); | |
2940 | } | |
2941 | } | |
2942 | #endif | |
2943 | ||
2944 | static void diff_resolve_rename_copy(void) | |
2945 | { | |
64479711 LT |
2946 | int i; |
2947 | struct diff_filepair *p; | |
6973dcae JH |
2948 | struct diff_queue_struct *q = &diff_queued_diff; |
2949 | ||
2950 | diff_debug_queue("resolve-rename-copy", q); | |
2951 | ||
2952 | for (i = 0; i < q->nr; i++) { | |
2953 | p = q->queue[i]; | |
2954 | p->status = 0; /* undecided */ | |
2955 | if (DIFF_PAIR_UNMERGED(p)) | |
2956 | p->status = DIFF_STATUS_UNMERGED; | |
2957 | else if (!DIFF_FILE_VALID(p->one)) | |
2958 | p->status = DIFF_STATUS_ADDED; | |
2959 | else if (!DIFF_FILE_VALID(p->two)) | |
2960 | p->status = DIFF_STATUS_DELETED; | |
2961 | else if (DIFF_PAIR_TYPE_CHANGED(p)) | |
2962 | p->status = DIFF_STATUS_TYPE_CHANGED; | |
2963 | ||
2964 | /* from this point on, we are dealing with a pair | |
2965 | * whose both sides are valid and of the same type, i.e. | |
2966 | * either in-place edit or rename/copy edit. | |
2967 | */ | |
2968 | else if (DIFF_PAIR_RENAME(p)) { | |
64479711 LT |
2969 | /* |
2970 | * A rename might have re-connected a broken | |
2971 | * pair up, causing the pathnames to be the | |
2972 | * same again. If so, that's not a rename at | |
2973 | * all, just a modification.. | |
2974 | * | |
2975 | * Otherwise, see if this source was used for | |
2976 | * multiple renames, in which case we decrement | |
2977 | * the count, and call it a copy. | |
6973dcae | 2978 | */ |
64479711 LT |
2979 | if (!strcmp(p->one->path, p->two->path)) |
2980 | p->status = DIFF_STATUS_MODIFIED; | |
2981 | else if (--p->one->rename_used > 0) | |
6973dcae | 2982 | p->status = DIFF_STATUS_COPIED; |
64479711 | 2983 | else |
6973dcae JH |
2984 | p->status = DIFF_STATUS_RENAMED; |
2985 | } | |
a89fccd2 | 2986 | else if (hashcmp(p->one->sha1, p->two->sha1) || |
d516c2d1 JS |
2987 | p->one->mode != p->two->mode || |
2988 | is_null_sha1(p->one->sha1)) | |
6973dcae JH |
2989 | p->status = DIFF_STATUS_MODIFIED; |
2990 | else { | |
2991 | /* This is a "no-change" entry and should not | |
2992 | * happen anymore, but prepare for broken callers. | |
2993 | */ | |
2994 | error("feeding unmodified %s to diffcore", | |
2995 | p->one->path); | |
2996 | p->status = DIFF_STATUS_UNKNOWN; | |
2997 | } | |
2998 | } | |
2999 | diff_debug_queue("resolve-rename-copy done", q); | |
3000 | } | |
3001 | ||
c6744349 | 3002 | static int check_pair_status(struct diff_filepair *p) |
6973dcae | 3003 | { |
6973dcae JH |
3004 | switch (p->status) { |
3005 | case DIFF_STATUS_UNKNOWN: | |
c6744349 | 3006 | return 0; |
6973dcae JH |
3007 | case 0: |
3008 | die("internal error in diff-resolve-rename-copy"); | |
6973dcae | 3009 | default: |
c6744349 | 3010 | return 1; |
6973dcae JH |
3011 | } |
3012 | } | |
3013 | ||
c6744349 TH |
3014 | static void flush_one_pair(struct diff_filepair *p, struct diff_options *opt) |
3015 | { | |
3016 | int fmt = opt->output_format; | |
3017 | ||
3018 | if (fmt & DIFF_FORMAT_CHECKDIFF) | |
3019 | diff_flush_checkdiff(p, opt); | |
3020 | else if (fmt & (DIFF_FORMAT_RAW | DIFF_FORMAT_NAME_STATUS)) | |
3021 | diff_flush_raw(p, opt); | |
cd676a51 JH |
3022 | else if (fmt & DIFF_FORMAT_NAME) { |
3023 | const char *name_a, *name_b; | |
3024 | name_a = p->two->path; | |
3025 | name_b = NULL; | |
3026 | strip_prefix(opt->prefix_length, &name_a, &name_b); | |
c0c77734 | 3027 | write_name_quoted(name_a, opt->file, opt->line_termination); |
cd676a51 | 3028 | } |
c6744349 TH |
3029 | } |
3030 | ||
c0c77734 | 3031 | static void show_file_mode_name(FILE *file, const char *newdelete, struct diff_filespec *fs) |
4bbd261b SE |
3032 | { |
3033 | if (fs->mode) | |
c0c77734 | 3034 | fprintf(file, " %s mode %06o ", newdelete, fs->mode); |
4bbd261b | 3035 | else |
c0c77734 DB |
3036 | fprintf(file, " %s ", newdelete); |
3037 | write_name_quoted(fs->path, file, '\n'); | |
4bbd261b SE |
3038 | } |
3039 | ||
3040 | ||
c0c77734 | 3041 | static void show_mode_change(FILE *file, struct diff_filepair *p, int show_name) |
4bbd261b SE |
3042 | { |
3043 | if (p->one->mode && p->two->mode && p->one->mode != p->two->mode) { | |
c0c77734 | 3044 | fprintf(file, " mode change %06o => %06o%c", p->one->mode, p->two->mode, |
663af342 | 3045 | show_name ? ' ' : '\n'); |
0d26a64e | 3046 | if (show_name) { |
c0c77734 | 3047 | write_name_quoted(p->two->path, file, '\n'); |
0d26a64e | 3048 | } |
4bbd261b SE |
3049 | } |
3050 | } | |
3051 | ||
c0c77734 | 3052 | static void show_rename_copy(FILE *file, const char *renamecopy, struct diff_filepair *p) |
4bbd261b | 3053 | { |
b9f44164 | 3054 | char *names = pprint_rename(p->one->path, p->two->path); |
4bbd261b | 3055 | |
c0c77734 | 3056 | fprintf(file, " %s %s (%d%%)\n", renamecopy, names, similarity_index(p)); |
b9f44164 | 3057 | free(names); |
c0c77734 | 3058 | show_mode_change(file, p, 0); |
4bbd261b SE |
3059 | } |
3060 | ||
c0c77734 | 3061 | static void diff_summary(FILE *file, struct diff_filepair *p) |
4bbd261b SE |
3062 | { |
3063 | switch(p->status) { | |
3064 | case DIFF_STATUS_DELETED: | |
c0c77734 | 3065 | show_file_mode_name(file, "delete", p->one); |
4bbd261b SE |
3066 | break; |
3067 | case DIFF_STATUS_ADDED: | |
c0c77734 | 3068 | show_file_mode_name(file, "create", p->two); |
4bbd261b SE |
3069 | break; |
3070 | case DIFF_STATUS_COPIED: | |
c0c77734 | 3071 | show_rename_copy(file, "copy", p); |
4bbd261b SE |
3072 | break; |
3073 | case DIFF_STATUS_RENAMED: | |
c0c77734 | 3074 | show_rename_copy(file, "rename", p); |
4bbd261b SE |
3075 | break; |
3076 | default: | |
3077 | if (p->score) { | |
c0c77734 DB |
3078 | fputs(" rewrite ", file); |
3079 | write_name_quoted(p->two->path, file, ' '); | |
3080 | fprintf(file, "(%d%%)\n", similarity_index(p)); | |
663af342 | 3081 | } |
c0c77734 | 3082 | show_mode_change(file, p, !p->score); |
4bbd261b SE |
3083 | break; |
3084 | } | |
3085 | } | |
3086 | ||
fcb3d0ad | 3087 | struct patch_id_t { |
9126f009 | 3088 | git_SHA_CTX *ctx; |
fcb3d0ad JS |
3089 | int patchlen; |
3090 | }; | |
3091 | ||
3092 | static int remove_space(char *line, int len) | |
3093 | { | |
3094 | int i; | |
663af342 PH |
3095 | char *dst = line; |
3096 | unsigned char c; | |
fcb3d0ad | 3097 | |
663af342 PH |
3098 | for (i = 0; i < len; i++) |
3099 | if (!isspace((c = line[i]))) | |
3100 | *dst++ = c; | |
fcb3d0ad | 3101 | |
663af342 | 3102 | return dst - line; |
fcb3d0ad JS |
3103 | } |
3104 | ||
3105 | static void patch_id_consume(void *priv, char *line, unsigned long len) | |
3106 | { | |
3107 | struct patch_id_t *data = priv; | |
3108 | int new_len; | |
3109 | ||
3110 | /* Ignore line numbers when computing the SHA1 of the patch */ | |
cc44c765 | 3111 | if (!prefixcmp(line, "@@ -")) |
fcb3d0ad JS |
3112 | return; |
3113 | ||
3114 | new_len = remove_space(line, len); | |
3115 | ||
9126f009 | 3116 | git_SHA1_Update(data->ctx, line, new_len); |
fcb3d0ad JS |
3117 | data->patchlen += new_len; |
3118 | } | |
3119 | ||
3120 | /* returns 0 upon success, and writes result into sha1 */ | |
3121 | static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1) | |
3122 | { | |
3123 | struct diff_queue_struct *q = &diff_queued_diff; | |
3124 | int i; | |
9126f009 | 3125 | git_SHA_CTX ctx; |
fcb3d0ad JS |
3126 | struct patch_id_t data; |
3127 | char buffer[PATH_MAX * 4 + 20]; | |
3128 | ||
9126f009 | 3129 | git_SHA1_Init(&ctx); |
fcb3d0ad JS |
3130 | memset(&data, 0, sizeof(struct patch_id_t)); |
3131 | data.ctx = &ctx; | |
fcb3d0ad JS |
3132 | |
3133 | for (i = 0; i < q->nr; i++) { | |
3134 | xpparam_t xpp; | |
3135 | xdemitconf_t xecfg; | |
3136 | xdemitcb_t ecb; | |
3137 | mmfile_t mf1, mf2; | |
3138 | struct diff_filepair *p = q->queue[i]; | |
3139 | int len1, len2; | |
3140 | ||
9ccd0a88 | 3141 | memset(&xpp, 0, sizeof(xpp)); |
30b25010 | 3142 | memset(&xecfg, 0, sizeof(xecfg)); |
fcb3d0ad JS |
3143 | if (p->status == 0) |
3144 | return error("internal diff status error"); | |
3145 | if (p->status == DIFF_STATUS_UNKNOWN) | |
3146 | continue; | |
3147 | if (diff_unmodified_pair(p)) | |
3148 | continue; | |
3149 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || | |
3150 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
3151 | continue; | |
3152 | if (DIFF_PAIR_UNMERGED(p)) | |
3153 | continue; | |
3154 | ||
3155 | diff_fill_sha1_info(p->one); | |
3156 | diff_fill_sha1_info(p->two); | |
3157 | if (fill_mmfile(&mf1, p->one) < 0 || | |
3158 | fill_mmfile(&mf2, p->two) < 0) | |
3159 | return error("unable to read files to diff"); | |
3160 | ||
fcb3d0ad JS |
3161 | len1 = remove_space(p->one->path, strlen(p->one->path)); |
3162 | len2 = remove_space(p->two->path, strlen(p->two->path)); | |
3163 | if (p->one->mode == 0) | |
3164 | len1 = snprintf(buffer, sizeof(buffer), | |
3165 | "diff--gita/%.*sb/%.*s" | |
3166 | "newfilemode%06o" | |
3167 | "---/dev/null" | |
3168 | "+++b/%.*s", | |
3169 | len1, p->one->path, | |
3170 | len2, p->two->path, | |
3171 | p->two->mode, | |
3172 | len2, p->two->path); | |
3173 | else if (p->two->mode == 0) | |
3174 | len1 = snprintf(buffer, sizeof(buffer), | |
3175 | "diff--gita/%.*sb/%.*s" | |
3176 | "deletedfilemode%06o" | |
3177 | "---a/%.*s" | |
3178 | "+++/dev/null", | |
3179 | len1, p->one->path, | |
3180 | len2, p->two->path, | |
3181 | p->one->mode, | |
3182 | len1, p->one->path); | |
3183 | else | |
3184 | len1 = snprintf(buffer, sizeof(buffer), | |
3185 | "diff--gita/%.*sb/%.*s" | |
3186 | "---a/%.*s" | |
3187 | "+++b/%.*s", | |
3188 | len1, p->one->path, | |
3189 | len2, p->two->path, | |
3190 | len1, p->one->path, | |
3191 | len2, p->two->path); | |
9126f009 | 3192 | git_SHA1_Update(&ctx, buffer, len1); |
fcb3d0ad JS |
3193 | |
3194 | xpp.flags = XDF_NEED_MINIMAL; | |
3195 | xecfg.ctxlen = 3; | |
9fdc3bb5 | 3196 | xecfg.flags = XDL_EMIT_FUNCNAMES; |
8a3f524b JH |
3197 | xdi_diff_outf(&mf1, &mf2, patch_id_consume, &data, |
3198 | &xpp, &xecfg, &ecb); | |
fcb3d0ad JS |
3199 | } |
3200 | ||
9126f009 | 3201 | git_SHA1_Final(sha1, &ctx); |
fcb3d0ad JS |
3202 | return 0; |
3203 | } | |
3204 | ||
3205 | int diff_flush_patch_id(struct diff_options *options, unsigned char *sha1) | |
3206 | { | |
3207 | struct diff_queue_struct *q = &diff_queued_diff; | |
3208 | int i; | |
3209 | int result = diff_get_patch_id(options, sha1); | |
3210 | ||
3211 | for (i = 0; i < q->nr; i++) | |
3212 | diff_free_filepair(q->queue[i]); | |
3213 | ||
3214 | free(q->queue); | |
3215 | q->queue = NULL; | |
3216 | q->nr = q->alloc = 0; | |
3217 | ||
3218 | return result; | |
3219 | } | |
3220 | ||
946c3784 | 3221 | static int is_summary_empty(const struct diff_queue_struct *q) |
6973dcae | 3222 | { |
6973dcae | 3223 | int i; |
6973dcae | 3224 | |
946c3784 TH |
3225 | for (i = 0; i < q->nr; i++) { |
3226 | const struct diff_filepair *p = q->queue[i]; | |
3227 | ||
3228 | switch (p->status) { | |
3229 | case DIFF_STATUS_DELETED: | |
3230 | case DIFF_STATUS_ADDED: | |
3231 | case DIFF_STATUS_COPIED: | |
3232 | case DIFF_STATUS_RENAMED: | |
3233 | return 0; | |
3234 | default: | |
3235 | if (p->score) | |
3236 | return 0; | |
3237 | if (p->one->mode && p->two->mode && | |
3238 | p->one->mode != p->two->mode) | |
3239 | return 0; | |
3240 | break; | |
3241 | } | |
6973dcae | 3242 | } |
946c3784 TH |
3243 | return 1; |
3244 | } | |
3245 | ||
6973dcae JH |
3246 | void diff_flush(struct diff_options *options) |
3247 | { | |
3248 | struct diff_queue_struct *q = &diff_queued_diff; | |
c6744349 | 3249 | int i, output_format = options->output_format; |
946c3784 | 3250 | int separator = 0; |
6973dcae | 3251 | |
c6744349 TH |
3252 | /* |
3253 | * Order: raw, stat, summary, patch | |
3254 | * or: name/name-status/checkdiff (other bits clear) | |
3255 | */ | |
946c3784 TH |
3256 | if (!q->nr) |
3257 | goto free_queue; | |
6973dcae | 3258 | |
c6744349 TH |
3259 | if (output_format & (DIFF_FORMAT_RAW | |
3260 | DIFF_FORMAT_NAME | | |
3261 | DIFF_FORMAT_NAME_STATUS | | |
3262 | DIFF_FORMAT_CHECKDIFF)) { | |
6973dcae JH |
3263 | for (i = 0; i < q->nr; i++) { |
3264 | struct diff_filepair *p = q->queue[i]; | |
c6744349 TH |
3265 | if (check_pair_status(p)) |
3266 | flush_one_pair(p, options); | |
6973dcae | 3267 | } |
946c3784 | 3268 | separator++; |
6973dcae | 3269 | } |
c6744349 | 3270 | |
c04a7155 | 3271 | if (output_format & (DIFF_FORMAT_DIFFSTAT|DIFF_FORMAT_SHORTSTAT|DIFF_FORMAT_NUMSTAT)) { |
5e2b0636 | 3272 | struct diffstat_t diffstat; |
c6744349 | 3273 | |
5e2b0636 | 3274 | memset(&diffstat, 0, sizeof(struct diffstat_t)); |
6973dcae JH |
3275 | for (i = 0; i < q->nr; i++) { |
3276 | struct diff_filepair *p = q->queue[i]; | |
c6744349 | 3277 | if (check_pair_status(p)) |
5e2b0636 | 3278 | diff_flush_stat(p, options, &diffstat); |
6973dcae | 3279 | } |
74e2abe5 JH |
3280 | if (output_format & DIFF_FORMAT_NUMSTAT) |
3281 | show_numstat(&diffstat, options); | |
3282 | if (output_format & DIFF_FORMAT_DIFFSTAT) | |
3283 | show_stats(&diffstat, options); | |
f604652e | 3284 | if (output_format & DIFF_FORMAT_SHORTSTAT) |
c0c77734 | 3285 | show_shortstats(&diffstat, options); |
f604652e | 3286 | free_diffstat_info(&diffstat); |
3969cf7d | 3287 | separator++; |
6973dcae | 3288 | } |
c04a7155 JH |
3289 | if (output_format & DIFF_FORMAT_DIRSTAT) |
3290 | show_dirstat(options); | |
6973dcae | 3291 | |
946c3784 | 3292 | if (output_format & DIFF_FORMAT_SUMMARY && !is_summary_empty(q)) { |
c6744349 | 3293 | for (i = 0; i < q->nr; i++) |
c0c77734 | 3294 | diff_summary(options->file, q->queue[i]); |
3969cf7d | 3295 | separator++; |
6973dcae JH |
3296 | } |
3297 | ||
c6744349 | 3298 | if (output_format & DIFF_FORMAT_PATCH) { |
946c3784 | 3299 | if (separator) { |
6b2fbaaf | 3300 | putc(options->line_termination, options->file); |
946c3784 TH |
3301 | if (options->stat_sep) { |
3302 | /* attach patch instead of inline */ | |
c0c77734 | 3303 | fputs(options->stat_sep, options->file); |
946c3784 | 3304 | } |
c6744349 TH |
3305 | } |
3306 | ||
3307 | for (i = 0; i < q->nr; i++) { | |
3308 | struct diff_filepair *p = q->queue[i]; | |
3309 | if (check_pair_status(p)) | |
3310 | diff_flush_patch(p, options); | |
3311 | } | |
4bbd261b SE |
3312 | } |
3313 | ||
04245581 JK |
3314 | if (output_format & DIFF_FORMAT_CALLBACK) |
3315 | options->format_callback(q, options, options->format_callback_data); | |
3316 | ||
c6744349 TH |
3317 | for (i = 0; i < q->nr; i++) |
3318 | diff_free_filepair(q->queue[i]); | |
946c3784 | 3319 | free_queue: |
6973dcae JH |
3320 | free(q->queue); |
3321 | q->queue = NULL; | |
3322 | q->nr = q->alloc = 0; | |
c0c77734 DB |
3323 | if (options->close_file) |
3324 | fclose(options->file); | |
6973dcae JH |
3325 | } |
3326 | ||
3327 | static void diffcore_apply_filter(const char *filter) | |
3328 | { | |
3329 | int i; | |
3330 | struct diff_queue_struct *q = &diff_queued_diff; | |
3331 | struct diff_queue_struct outq; | |
3332 | outq.queue = NULL; | |
3333 | outq.nr = outq.alloc = 0; | |
3334 | ||
3335 | if (!filter) | |
3336 | return; | |
3337 | ||
3338 | if (strchr(filter, DIFF_STATUS_FILTER_AON)) { | |
3339 | int found; | |
3340 | for (i = found = 0; !found && i < q->nr; i++) { | |
3341 | struct diff_filepair *p = q->queue[i]; | |
3342 | if (((p->status == DIFF_STATUS_MODIFIED) && | |
3343 | ((p->score && | |
3344 | strchr(filter, DIFF_STATUS_FILTER_BROKEN)) || | |
3345 | (!p->score && | |
3346 | strchr(filter, DIFF_STATUS_MODIFIED)))) || | |
3347 | ((p->status != DIFF_STATUS_MODIFIED) && | |
3348 | strchr(filter, p->status))) | |
3349 | found++; | |
3350 | } | |
3351 | if (found) | |
3352 | return; | |
3353 | ||
3354 | /* otherwise we will clear the whole queue | |
3355 | * by copying the empty outq at the end of this | |
3356 | * function, but first clear the current entries | |
3357 | * in the queue. | |
3358 | */ | |
3359 | for (i = 0; i < q->nr; i++) | |
3360 | diff_free_filepair(q->queue[i]); | |
3361 | } | |
3362 | else { | |
3363 | /* Only the matching ones */ | |
3364 | for (i = 0; i < q->nr; i++) { | |
3365 | struct diff_filepair *p = q->queue[i]; | |
3366 | ||
3367 | if (((p->status == DIFF_STATUS_MODIFIED) && | |
3368 | ((p->score && | |
3369 | strchr(filter, DIFF_STATUS_FILTER_BROKEN)) || | |
3370 | (!p->score && | |
3371 | strchr(filter, DIFF_STATUS_MODIFIED)))) || | |
3372 | ((p->status != DIFF_STATUS_MODIFIED) && | |
3373 | strchr(filter, p->status))) | |
3374 | diff_q(&outq, p); | |
3375 | else | |
3376 | diff_free_filepair(p); | |
3377 | } | |
3378 | } | |
3379 | free(q->queue); | |
3380 | *q = outq; | |
3381 | } | |
3382 | ||
5701115a SV |
3383 | /* Check whether two filespecs with the same mode and size are identical */ |
3384 | static int diff_filespec_is_identical(struct diff_filespec *one, | |
3385 | struct diff_filespec *two) | |
3386 | { | |
2b459b48 JH |
3387 | if (S_ISGITLINK(one->mode)) |
3388 | return 0; | |
5701115a SV |
3389 | if (diff_populate_filespec(one, 0)) |
3390 | return 0; | |
3391 | if (diff_populate_filespec(two, 0)) | |
3392 | return 0; | |
3393 | return !memcmp(one->data, two->data, one->size); | |
3394 | } | |
3395 | ||
fb13227e JH |
3396 | static void diffcore_skip_stat_unmatch(struct diff_options *diffopt) |
3397 | { | |
3398 | int i; | |
3399 | struct diff_queue_struct *q = &diff_queued_diff; | |
3400 | struct diff_queue_struct outq; | |
3401 | outq.queue = NULL; | |
3402 | outq.nr = outq.alloc = 0; | |
3403 | ||
3404 | for (i = 0; i < q->nr; i++) { | |
3405 | struct diff_filepair *p = q->queue[i]; | |
3406 | ||
3407 | /* | |
3408 | * 1. Entries that come from stat info dirtyness | |
3409 | * always have both sides (iow, not create/delete), | |
3410 | * one side of the object name is unknown, with | |
3411 | * the same mode and size. Keep the ones that | |
3412 | * do not match these criteria. They have real | |
3413 | * differences. | |
3414 | * | |
3415 | * 2. At this point, the file is known to be modified, | |
3416 | * with the same mode and size, and the object | |
3417 | * name of one side is unknown. Need to inspect | |
3418 | * the identical contents. | |
3419 | */ | |
3420 | if (!DIFF_FILE_VALID(p->one) || /* (1) */ | |
3421 | !DIFF_FILE_VALID(p->two) || | |
3422 | (p->one->sha1_valid && p->two->sha1_valid) || | |
3423 | (p->one->mode != p->two->mode) || | |
3424 | diff_populate_filespec(p->one, 1) || | |
3425 | diff_populate_filespec(p->two, 1) || | |
3426 | (p->one->size != p->two->size) || | |
5701115a | 3427 | !diff_filespec_is_identical(p->one, p->two)) /* (2) */ |
fb13227e JH |
3428 | diff_q(&outq, p); |
3429 | else { | |
3430 | /* | |
3431 | * The caller can subtract 1 from skip_stat_unmatch | |
3432 | * to determine how many paths were dirty only | |
3433 | * due to stat info mismatch. | |
3434 | */ | |
8f67f8ae | 3435 | if (!DIFF_OPT_TST(diffopt, NO_INDEX)) |
6d2d9e86 | 3436 | diffopt->skip_stat_unmatch++; |
fb13227e JH |
3437 | diff_free_filepair(p); |
3438 | } | |
3439 | } | |
3440 | free(q->queue); | |
3441 | *q = outq; | |
3442 | } | |
3443 | ||
6973dcae JH |
3444 | void diffcore_std(struct diff_options *options) |
3445 | { | |
9d865356 | 3446 | if (options->skip_stat_unmatch) |
fb13227e | 3447 | diffcore_skip_stat_unmatch(options); |
6973dcae JH |
3448 | if (options->break_opt != -1) |
3449 | diffcore_break(options->break_opt); | |
3450 | if (options->detect_rename) | |
3451 | diffcore_rename(options); | |
3452 | if (options->break_opt != -1) | |
3453 | diffcore_merge_broken(); | |
3454 | if (options->pickaxe) | |
3455 | diffcore_pickaxe(options->pickaxe, options->pickaxe_opts); | |
3456 | if (options->orderfile) | |
3457 | diffcore_order(options->orderfile); | |
3458 | diff_resolve_rename_copy(); | |
3459 | diffcore_apply_filter(options->filter); | |
68aacb2f | 3460 | |
8f67f8ae PH |
3461 | if (diff_queued_diff.nr) |
3462 | DIFF_OPT_SET(options, HAS_CHANGES); | |
3463 | else | |
3464 | DIFF_OPT_CLR(options, HAS_CHANGES); | |
6973dcae JH |
3465 | } |
3466 | ||
da31b358 JH |
3467 | int diff_result_code(struct diff_options *opt, int status) |
3468 | { | |
3469 | int result = 0; | |
3470 | if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) && | |
3471 | !(opt->output_format & DIFF_FORMAT_CHECKDIFF)) | |
3472 | return status; | |
3473 | if (DIFF_OPT_TST(opt, EXIT_WITH_STATUS) && | |
3474 | DIFF_OPT_TST(opt, HAS_CHANGES)) | |
3475 | result |= 01; | |
3476 | if ((opt->output_format & DIFF_FORMAT_CHECKDIFF) && | |
3477 | DIFF_OPT_TST(opt, CHECK_FAILED)) | |
3478 | result |= 02; | |
3479 | return result; | |
3480 | } | |
6973dcae | 3481 | |
6973dcae JH |
3482 | void diff_addremove(struct diff_options *options, |
3483 | int addremove, unsigned mode, | |
3484 | const unsigned char *sha1, | |
fd55a19e | 3485 | const char *concatpath) |
6973dcae | 3486 | { |
6973dcae JH |
3487 | struct diff_filespec *one, *two; |
3488 | ||
50fd9bd8 JS |
3489 | if (DIFF_OPT_TST(options, IGNORE_SUBMODULES) && S_ISGITLINK(mode)) |
3490 | return; | |
3491 | ||
6973dcae JH |
3492 | /* This may look odd, but it is a preparation for |
3493 | * feeding "there are unchanged files which should | |
3494 | * not produce diffs, but when you are doing copy | |
3495 | * detection you would need them, so here they are" | |
3496 | * entries to the diff-core. They will be prefixed | |
3497 | * with something like '=' or '*' (I haven't decided | |
3498 | * which but should not make any difference). | |
a6080a0a | 3499 | * Feeding the same new and old to diff_change() |
6973dcae JH |
3500 | * also has the same effect. |
3501 | * Before the final output happens, they are pruned after | |
3502 | * merged into rename/copy pairs as appropriate. | |
3503 | */ | |
8f67f8ae | 3504 | if (DIFF_OPT_TST(options, REVERSE_DIFF)) |
6973dcae JH |
3505 | addremove = (addremove == '+' ? '-' : |
3506 | addremove == '-' ? '+' : addremove); | |
3507 | ||
cd676a51 JH |
3508 | if (options->prefix && |
3509 | strncmp(concatpath, options->prefix, options->prefix_length)) | |
3510 | return; | |
3511 | ||
6973dcae JH |
3512 | one = alloc_filespec(concatpath); |
3513 | two = alloc_filespec(concatpath); | |
3514 | ||
3515 | if (addremove != '+') | |
3516 | fill_filespec(one, sha1, mode); | |
3517 | if (addremove != '-') | |
3518 | fill_filespec(two, sha1, mode); | |
3519 | ||
3520 | diff_queue(&diff_queued_diff, one, two); | |
8f67f8ae | 3521 | DIFF_OPT_SET(options, HAS_CHANGES); |
6973dcae JH |
3522 | } |
3523 | ||
3524 | void diff_change(struct diff_options *options, | |
3525 | unsigned old_mode, unsigned new_mode, | |
3526 | const unsigned char *old_sha1, | |
3527 | const unsigned char *new_sha1, | |
fd55a19e | 3528 | const char *concatpath) |
6973dcae | 3529 | { |
6973dcae JH |
3530 | struct diff_filespec *one, *two; |
3531 | ||
50fd9bd8 JS |
3532 | if (DIFF_OPT_TST(options, IGNORE_SUBMODULES) && S_ISGITLINK(old_mode) |
3533 | && S_ISGITLINK(new_mode)) | |
3534 | return; | |
3535 | ||
8f67f8ae | 3536 | if (DIFF_OPT_TST(options, REVERSE_DIFF)) { |
6973dcae JH |
3537 | unsigned tmp; |
3538 | const unsigned char *tmp_c; | |
3539 | tmp = old_mode; old_mode = new_mode; new_mode = tmp; | |
3540 | tmp_c = old_sha1; old_sha1 = new_sha1; new_sha1 = tmp_c; | |
3541 | } | |
cd676a51 JH |
3542 | |
3543 | if (options->prefix && | |
3544 | strncmp(concatpath, options->prefix, options->prefix_length)) | |
3545 | return; | |
3546 | ||
6973dcae JH |
3547 | one = alloc_filespec(concatpath); |
3548 | two = alloc_filespec(concatpath); | |
3549 | fill_filespec(one, old_sha1, old_mode); | |
3550 | fill_filespec(two, new_sha1, new_mode); | |
3551 | ||
3552 | diff_queue(&diff_queued_diff, one, two); | |
8f67f8ae | 3553 | DIFF_OPT_SET(options, HAS_CHANGES); |
6973dcae JH |
3554 | } |
3555 | ||
3556 | void diff_unmerge(struct diff_options *options, | |
e9c84099 JH |
3557 | const char *path, |
3558 | unsigned mode, const unsigned char *sha1) | |
6973dcae JH |
3559 | { |
3560 | struct diff_filespec *one, *two; | |
cd676a51 JH |
3561 | |
3562 | if (options->prefix && | |
3563 | strncmp(path, options->prefix, options->prefix_length)) | |
3564 | return; | |
3565 | ||
6973dcae JH |
3566 | one = alloc_filespec(path); |
3567 | two = alloc_filespec(path); | |
e9c84099 JH |
3568 | fill_filespec(one, sha1, mode); |
3569 | diff_queue(&diff_queued_diff, one, two)->is_unmerged = 1; | |
6973dcae | 3570 | } |
9cb92c39 JK |
3571 | |
3572 | static char *run_textconv(const char *pgm, struct diff_filespec *spec, | |
3573 | size_t *outsize) | |
3574 | { | |
479b0ae8 | 3575 | struct diff_tempfile *temp; |
9cb92c39 JK |
3576 | const char *argv[3]; |
3577 | const char **arg = argv; | |
3578 | struct child_process child; | |
3579 | struct strbuf buf = STRBUF_INIT; | |
3580 | ||
479b0ae8 | 3581 | temp = prepare_temp_file(spec->path, spec); |
9cb92c39 | 3582 | *arg++ = pgm; |
479b0ae8 | 3583 | *arg++ = temp->name; |
9cb92c39 JK |
3584 | *arg = NULL; |
3585 | ||
3586 | memset(&child, 0, sizeof(child)); | |
3587 | child.argv = argv; | |
3588 | child.out = -1; | |
3589 | if (start_command(&child) != 0 || | |
3590 | strbuf_read(&buf, child.out, 0) < 0 || | |
3591 | finish_command(&child) != 0) { | |
479b0ae8 | 3592 | remove_tempfile(); |
9cb92c39 JK |
3593 | error("error running textconv command '%s'", pgm); |
3594 | return NULL; | |
3595 | } | |
479b0ae8 | 3596 | remove_tempfile(); |
9cb92c39 JK |
3597 | |
3598 | return strbuf_detach(&buf, outsize); | |
3599 | } |