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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" |
6973dcae | 13 | |
1510fea7 SP |
14 | #ifdef NO_FAST_WORKING_DIRECTORY |
15 | #define FAST_WORKING_DIRECTORY 0 | |
16 | #else | |
17 | #define FAST_WORKING_DIRECTORY 1 | |
18 | #endif | |
19 | ||
96f1e58f | 20 | static int diff_detect_rename_default; |
0024a549 | 21 | static int diff_rename_limit_default = 100; |
96f1e58f | 22 | static int diff_use_color_default; |
cbe02100 | 23 | static const char *external_diff_cmd_cfg; |
aecbf914 | 24 | int diff_auto_refresh_index = 1; |
6973dcae | 25 | |
7c92fe0e | 26 | static char diff_colors[][COLOR_MAXLEN] = { |
f37399e6 | 27 | "\033[m", /* reset */ |
448c3ef1 JH |
28 | "", /* PLAIN (normal) */ |
29 | "\033[1m", /* METAINFO (bold) */ | |
30 | "\033[36m", /* FRAGINFO (cyan) */ | |
31 | "\033[31m", /* OLD (red) */ | |
32 | "\033[32m", /* NEW (green) */ | |
33 | "\033[33m", /* COMMIT (yellow) */ | |
34 | "\033[41m", /* WHITESPACE (red background) */ | |
cd112cef JS |
35 | }; |
36 | ||
801235c5 JH |
37 | static int parse_diff_color_slot(const char *var, int ofs) |
38 | { | |
39 | if (!strcasecmp(var+ofs, "plain")) | |
40 | return DIFF_PLAIN; | |
41 | if (!strcasecmp(var+ofs, "meta")) | |
42 | return DIFF_METAINFO; | |
43 | if (!strcasecmp(var+ofs, "frag")) | |
44 | return DIFF_FRAGINFO; | |
45 | if (!strcasecmp(var+ofs, "old")) | |
46 | return DIFF_FILE_OLD; | |
47 | if (!strcasecmp(var+ofs, "new")) | |
48 | return DIFF_FILE_NEW; | |
ce436973 JK |
49 | if (!strcasecmp(var+ofs, "commit")) |
50 | return DIFF_COMMIT; | |
448c3ef1 JH |
51 | if (!strcasecmp(var+ofs, "whitespace")) |
52 | return DIFF_WHITESPACE; | |
801235c5 JH |
53 | die("bad config variable '%s'", var); |
54 | } | |
55 | ||
f1af60bd JH |
56 | static struct ll_diff_driver { |
57 | const char *name; | |
58 | struct ll_diff_driver *next; | |
59 | char *cmd; | |
60 | } *user_diff, **user_diff_tail; | |
61 | ||
e0e324a4 JH |
62 | static void read_config_if_needed(void) |
63 | { | |
64 | if (!user_diff_tail) { | |
65 | user_diff_tail = &user_diff; | |
66 | git_config(git_diff_ui_config); | |
67 | } | |
68 | } | |
69 | ||
f1af60bd JH |
70 | /* |
71 | * Currently there is only "diff.<drivername>.command" variable; | |
72 | * because there are "diff.color.<slot>" variables, we are parsing | |
73 | * this in a bit convoluted way to allow low level diff driver | |
74 | * called "color". | |
75 | */ | |
76 | static int parse_lldiff_command(const char *var, const char *ep, const char *value) | |
77 | { | |
78 | const char *name; | |
79 | int namelen; | |
80 | struct ll_diff_driver *drv; | |
81 | ||
82 | name = var + 5; | |
83 | namelen = ep - name; | |
84 | for (drv = user_diff; drv; drv = drv->next) | |
85 | if (!strncmp(drv->name, name, namelen) && !drv->name[namelen]) | |
86 | break; | |
87 | if (!drv) { | |
f1af60bd | 88 | drv = xcalloc(1, sizeof(struct ll_diff_driver)); |
182af834 | 89 | drv->name = xmemdupz(name, namelen); |
f1af60bd JH |
90 | if (!user_diff_tail) |
91 | user_diff_tail = &user_diff; | |
92 | *user_diff_tail = drv; | |
93 | user_diff_tail = &(drv->next); | |
94 | } | |
95 | ||
96 | if (!value) | |
97 | return error("%s: lacks value", var); | |
98 | drv->cmd = strdup(value); | |
99 | return 0; | |
100 | } | |
101 | ||
e0e324a4 JH |
102 | /* |
103 | * 'diff.<what>.funcname' attribute can be specified in the configuration | |
104 | * to define a customized regexp to find the beginning of a function to | |
105 | * be used for hunk header lines of "diff -p" style output. | |
106 | */ | |
107 | static struct funcname_pattern { | |
108 | char *name; | |
109 | char *pattern; | |
110 | struct funcname_pattern *next; | |
111 | } *funcname_pattern_list; | |
112 | ||
113 | static int parse_funcname_pattern(const char *var, const char *ep, const char *value) | |
114 | { | |
115 | const char *name; | |
116 | int namelen; | |
117 | struct funcname_pattern *pp; | |
118 | ||
119 | name = var + 5; /* "diff." */ | |
120 | namelen = ep - name; | |
121 | ||
122 | for (pp = funcname_pattern_list; pp; pp = pp->next) | |
123 | if (!strncmp(pp->name, name, namelen) && !pp->name[namelen]) | |
124 | break; | |
125 | if (!pp) { | |
e0e324a4 | 126 | pp = xcalloc(1, sizeof(*pp)); |
182af834 | 127 | pp->name = xmemdupz(name, namelen); |
e0e324a4 JH |
128 | pp->next = funcname_pattern_list; |
129 | funcname_pattern_list = pp; | |
130 | } | |
131 | if (pp->pattern) | |
132 | free(pp->pattern); | |
133 | pp->pattern = xstrdup(value); | |
134 | return 0; | |
135 | } | |
136 | ||
83ad63cf JH |
137 | /* |
138 | * These are to give UI layer defaults. | |
139 | * The core-level commands such as git-diff-files should | |
140 | * never be affected by the setting of diff.renames | |
141 | * the user happens to have in the configuration file. | |
142 | */ | |
143 | int git_diff_ui_config(const char *var, const char *value) | |
801235c5 JH |
144 | { |
145 | if (!strcmp(var, "diff.renamelimit")) { | |
146 | diff_rename_limit_default = git_config_int(var, value); | |
147 | return 0; | |
148 | } | |
a159ca0c | 149 | if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) { |
0f6f5a40 | 150 | diff_use_color_default = git_config_colorbool(var, value, -1); |
801235c5 JH |
151 | return 0; |
152 | } | |
b68ea12e EW |
153 | if (!strcmp(var, "diff.renames")) { |
154 | if (!value) | |
155 | diff_detect_rename_default = DIFF_DETECT_RENAME; | |
156 | else if (!strcasecmp(value, "copies") || | |
157 | !strcasecmp(value, "copy")) | |
158 | diff_detect_rename_default = DIFF_DETECT_COPY; | |
159 | else if (git_config_bool(var,value)) | |
160 | diff_detect_rename_default = DIFF_DETECT_RENAME; | |
161 | return 0; | |
162 | } | |
aecbf914 JH |
163 | if (!strcmp(var, "diff.autorefreshindex")) { |
164 | diff_auto_refresh_index = git_config_bool(var, value); | |
165 | return 0; | |
166 | } | |
cbe02100 JS |
167 | if (!strcmp(var, "diff.external")) { |
168 | external_diff_cmd_cfg = xstrdup(value); | |
169 | return 0; | |
170 | } | |
f1af60bd JH |
171 | if (!prefixcmp(var, "diff.")) { |
172 | const char *ep = strrchr(var, '.'); | |
173 | ||
e0e324a4 JH |
174 | if (ep != var + 4) { |
175 | if (!strcmp(ep, ".command")) | |
176 | return parse_lldiff_command(var, ep, value); | |
177 | if (!strcmp(ep, ".funcname")) | |
178 | return parse_funcname_pattern(var, ep, value); | |
179 | } | |
f1af60bd | 180 | } |
1968d77d | 181 | if (!prefixcmp(var, "diff.color.") || !prefixcmp(var, "color.diff.")) { |
801235c5 | 182 | int slot = parse_diff_color_slot(var, 11); |
7c92fe0e | 183 | color_parse(value, var, diff_colors[slot]); |
801235c5 JH |
184 | return 0; |
185 | } | |
f1af60bd | 186 | |
801235c5 JH |
187 | return git_default_config(var, value); |
188 | } | |
189 | ||
6973dcae JH |
190 | static char *quote_two(const char *one, const char *two) |
191 | { | |
192 | int need_one = quote_c_style(one, NULL, NULL, 1); | |
193 | int need_two = quote_c_style(two, NULL, NULL, 1); | |
663af342 | 194 | struct strbuf res; |
6973dcae | 195 | |
663af342 | 196 | strbuf_init(&res, 0); |
6973dcae | 197 | if (need_one + need_two) { |
663af342 PH |
198 | strbuf_addch(&res, '"'); |
199 | quote_c_style(one, &res, NULL, 1); | |
200 | quote_c_style(two, &res, NULL, 1); | |
201 | strbuf_addch(&res, '"'); | |
202 | } else { | |
203 | strbuf_addstr(&res, one); | |
204 | strbuf_addstr(&res, two); | |
6973dcae | 205 | } |
b315c5c0 | 206 | return strbuf_detach(&res, NULL); |
6973dcae JH |
207 | } |
208 | ||
209 | static const char *external_diff(void) | |
210 | { | |
211 | static const char *external_diff_cmd = NULL; | |
212 | static int done_preparing = 0; | |
213 | ||
214 | if (done_preparing) | |
215 | return external_diff_cmd; | |
216 | external_diff_cmd = getenv("GIT_EXTERNAL_DIFF"); | |
cbe02100 JS |
217 | if (!external_diff_cmd) |
218 | external_diff_cmd = external_diff_cmd_cfg; | |
6973dcae JH |
219 | done_preparing = 1; |
220 | return external_diff_cmd; | |
221 | } | |
222 | ||
6973dcae JH |
223 | static struct diff_tempfile { |
224 | const char *name; /* filename external diff should read from */ | |
225 | char hex[41]; | |
226 | char mode[10]; | |
1472966c | 227 | char tmp_path[PATH_MAX]; |
6973dcae JH |
228 | } diff_temp[2]; |
229 | ||
230 | static int count_lines(const char *data, int size) | |
231 | { | |
232 | int count, ch, completely_empty = 1, nl_just_seen = 0; | |
233 | count = 0; | |
234 | while (0 < size--) { | |
235 | ch = *data++; | |
236 | if (ch == '\n') { | |
237 | count++; | |
238 | nl_just_seen = 1; | |
239 | completely_empty = 0; | |
240 | } | |
241 | else { | |
242 | nl_just_seen = 0; | |
243 | completely_empty = 0; | |
244 | } | |
245 | } | |
246 | if (completely_empty) | |
247 | return 0; | |
248 | if (!nl_just_seen) | |
249 | count++; /* no trailing newline */ | |
250 | return count; | |
251 | } | |
252 | ||
253 | static void print_line_count(int count) | |
254 | { | |
255 | switch (count) { | |
256 | case 0: | |
257 | printf("0,0"); | |
258 | break; | |
259 | case 1: | |
260 | printf("1"); | |
261 | break; | |
262 | default: | |
263 | printf("1,%d", count); | |
264 | break; | |
265 | } | |
266 | } | |
267 | ||
13e36ec5 JS |
268 | static void copy_file(int prefix, const char *data, int size, |
269 | const char *set, const char *reset) | |
6973dcae JH |
270 | { |
271 | int ch, nl_just_seen = 1; | |
272 | while (0 < size--) { | |
273 | ch = *data++; | |
13e36ec5 JS |
274 | if (nl_just_seen) { |
275 | fputs(set, stdout); | |
6973dcae | 276 | putchar(prefix); |
13e36ec5 JS |
277 | } |
278 | if (ch == '\n') { | |
6973dcae | 279 | nl_just_seen = 1; |
13e36ec5 JS |
280 | fputs(reset, stdout); |
281 | } else | |
6973dcae | 282 | nl_just_seen = 0; |
13e36ec5 | 283 | putchar(ch); |
6973dcae JH |
284 | } |
285 | if (!nl_just_seen) | |
13e36ec5 | 286 | printf("%s\n\\ No newline at end of file\n", reset); |
6973dcae JH |
287 | } |
288 | ||
289 | static void emit_rewrite_diff(const char *name_a, | |
290 | const char *name_b, | |
291 | struct diff_filespec *one, | |
13e36ec5 JS |
292 | struct diff_filespec *two, |
293 | int color_diff) | |
6973dcae JH |
294 | { |
295 | int lc_a, lc_b; | |
1a9eb3b9 | 296 | const char *name_a_tab, *name_b_tab; |
13e36ec5 JS |
297 | const char *metainfo = diff_get_color(color_diff, DIFF_METAINFO); |
298 | const char *fraginfo = diff_get_color(color_diff, DIFF_FRAGINFO); | |
299 | const char *old = diff_get_color(color_diff, DIFF_FILE_OLD); | |
300 | const char *new = diff_get_color(color_diff, DIFF_FILE_NEW); | |
301 | const char *reset = diff_get_color(color_diff, DIFF_RESET); | |
1a9eb3b9 | 302 | |
8a13becc JH |
303 | name_a += (*name_a == '/'); |
304 | name_b += (*name_b == '/'); | |
1a9eb3b9 JH |
305 | name_a_tab = strchr(name_a, ' ') ? "\t" : ""; |
306 | name_b_tab = strchr(name_b, ' ') ? "\t" : ""; | |
307 | ||
6973dcae JH |
308 | diff_populate_filespec(one, 0); |
309 | diff_populate_filespec(two, 0); | |
310 | lc_a = count_lines(one->data, one->size); | |
311 | lc_b = count_lines(two->data, two->size); | |
13e36ec5 JS |
312 | printf("%s--- a/%s%s%s\n%s+++ b/%s%s%s\n%s@@ -", |
313 | metainfo, name_a, name_a_tab, reset, | |
314 | metainfo, name_b, name_b_tab, reset, fraginfo); | |
6973dcae JH |
315 | print_line_count(lc_a); |
316 | printf(" +"); | |
317 | print_line_count(lc_b); | |
13e36ec5 | 318 | printf(" @@%s\n", reset); |
6973dcae | 319 | if (lc_a) |
13e36ec5 | 320 | copy_file('-', one->data, one->size, old, reset); |
6973dcae | 321 | if (lc_b) |
13e36ec5 | 322 | copy_file('+', two->data, two->size, new, reset); |
6973dcae JH |
323 | } |
324 | ||
325 | static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one) | |
326 | { | |
327 | if (!DIFF_FILE_VALID(one)) { | |
d2543b8e | 328 | mf->ptr = (char *)""; /* does not matter */ |
6973dcae JH |
329 | mf->size = 0; |
330 | return 0; | |
331 | } | |
332 | else if (diff_populate_filespec(one, 0)) | |
333 | return -1; | |
334 | mf->ptr = one->data; | |
335 | mf->size = one->size; | |
336 | return 0; | |
337 | } | |
338 | ||
f59a59e2 JS |
339 | struct diff_words_buffer { |
340 | mmfile_t text; | |
341 | long alloc; | |
342 | long current; /* output pointer */ | |
343 | int suppressed_newline; | |
344 | }; | |
345 | ||
346 | static void diff_words_append(char *line, unsigned long len, | |
347 | struct diff_words_buffer *buffer) | |
348 | { | |
349 | if (buffer->text.size + len > buffer->alloc) { | |
350 | buffer->alloc = (buffer->text.size + len) * 3 / 2; | |
351 | buffer->text.ptr = xrealloc(buffer->text.ptr, buffer->alloc); | |
352 | } | |
353 | line++; | |
354 | len--; | |
355 | memcpy(buffer->text.ptr + buffer->text.size, line, len); | |
356 | buffer->text.size += len; | |
357 | } | |
358 | ||
359 | struct diff_words_data { | |
360 | struct xdiff_emit_state xm; | |
361 | struct diff_words_buffer minus, plus; | |
362 | }; | |
363 | ||
364 | static void print_word(struct diff_words_buffer *buffer, int len, int color, | |
365 | int suppress_newline) | |
366 | { | |
367 | const char *ptr; | |
368 | int eol = 0; | |
369 | ||
370 | if (len == 0) | |
371 | return; | |
372 | ||
373 | ptr = buffer->text.ptr + buffer->current; | |
374 | buffer->current += len; | |
375 | ||
376 | if (ptr[len - 1] == '\n') { | |
377 | eol = 1; | |
378 | len--; | |
379 | } | |
380 | ||
381 | fputs(diff_get_color(1, color), stdout); | |
382 | fwrite(ptr, len, 1, stdout); | |
383 | fputs(diff_get_color(1, DIFF_RESET), stdout); | |
384 | ||
385 | if (eol) { | |
386 | if (suppress_newline) | |
387 | buffer->suppressed_newline = 1; | |
388 | else | |
389 | putchar('\n'); | |
390 | } | |
391 | } | |
392 | ||
393 | static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len) | |
394 | { | |
395 | struct diff_words_data *diff_words = priv; | |
396 | ||
397 | if (diff_words->minus.suppressed_newline) { | |
398 | if (line[0] != '+') | |
399 | putchar('\n'); | |
400 | diff_words->minus.suppressed_newline = 0; | |
401 | } | |
402 | ||
403 | len--; | |
404 | switch (line[0]) { | |
405 | case '-': | |
406 | print_word(&diff_words->minus, len, DIFF_FILE_OLD, 1); | |
407 | break; | |
408 | case '+': | |
409 | print_word(&diff_words->plus, len, DIFF_FILE_NEW, 0); | |
410 | break; | |
411 | case ' ': | |
412 | print_word(&diff_words->plus, len, DIFF_PLAIN, 0); | |
413 | diff_words->minus.current += len; | |
414 | break; | |
415 | } | |
416 | } | |
417 | ||
418 | /* this executes the word diff on the accumulated buffers */ | |
419 | static void diff_words_show(struct diff_words_data *diff_words) | |
420 | { | |
421 | xpparam_t xpp; | |
422 | xdemitconf_t xecfg; | |
423 | xdemitcb_t ecb; | |
424 | mmfile_t minus, plus; | |
425 | int i; | |
426 | ||
30b25010 | 427 | memset(&xecfg, 0, sizeof(xecfg)); |
f59a59e2 JS |
428 | minus.size = diff_words->minus.text.size; |
429 | minus.ptr = xmalloc(minus.size); | |
430 | memcpy(minus.ptr, diff_words->minus.text.ptr, minus.size); | |
431 | for (i = 0; i < minus.size; i++) | |
432 | if (isspace(minus.ptr[i])) | |
433 | minus.ptr[i] = '\n'; | |
434 | diff_words->minus.current = 0; | |
435 | ||
436 | plus.size = diff_words->plus.text.size; | |
437 | plus.ptr = xmalloc(plus.size); | |
438 | memcpy(plus.ptr, diff_words->plus.text.ptr, plus.size); | |
439 | for (i = 0; i < plus.size; i++) | |
440 | if (isspace(plus.ptr[i])) | |
441 | plus.ptr[i] = '\n'; | |
442 | diff_words->plus.current = 0; | |
443 | ||
444 | xpp.flags = XDF_NEED_MINIMAL; | |
445 | xecfg.ctxlen = diff_words->minus.alloc + diff_words->plus.alloc; | |
f59a59e2 JS |
446 | ecb.outf = xdiff_outf; |
447 | ecb.priv = diff_words; | |
448 | diff_words->xm.consume = fn_out_diff_words_aux; | |
c279d7e9 | 449 | xdi_diff(&minus, &plus, &xpp, &xecfg, &ecb); |
f59a59e2 JS |
450 | |
451 | free(minus.ptr); | |
452 | free(plus.ptr); | |
453 | diff_words->minus.text.size = diff_words->plus.text.size = 0; | |
454 | ||
455 | if (diff_words->minus.suppressed_newline) { | |
456 | putchar('\n'); | |
457 | diff_words->minus.suppressed_newline = 0; | |
458 | } | |
459 | } | |
460 | ||
6973dcae | 461 | struct emit_callback { |
cd112cef JS |
462 | struct xdiff_emit_state xm; |
463 | int nparents, color_diff; | |
cf1b7869 | 464 | unsigned ws_rule; |
6973dcae | 465 | const char **label_path; |
f59a59e2 | 466 | struct diff_words_data *diff_words; |
34a5e1a2 | 467 | int *found_changesp; |
6973dcae JH |
468 | }; |
469 | ||
f59a59e2 JS |
470 | static void free_diff_words_data(struct emit_callback *ecbdata) |
471 | { | |
472 | if (ecbdata->diff_words) { | |
473 | /* flush buffers */ | |
474 | if (ecbdata->diff_words->minus.text.size || | |
475 | ecbdata->diff_words->plus.text.size) | |
476 | diff_words_show(ecbdata->diff_words); | |
477 | ||
478 | if (ecbdata->diff_words->minus.text.ptr) | |
479 | free (ecbdata->diff_words->minus.text.ptr); | |
480 | if (ecbdata->diff_words->plus.text.ptr) | |
481 | free (ecbdata->diff_words->plus.text.ptr); | |
482 | free(ecbdata->diff_words); | |
483 | ecbdata->diff_words = NULL; | |
484 | } | |
485 | } | |
486 | ||
ce436973 | 487 | const char *diff_get_color(int diff_use_color, enum color_diff ix) |
cd112cef JS |
488 | { |
489 | if (diff_use_color) | |
50f575fc LT |
490 | return diff_colors[ix]; |
491 | return ""; | |
cd112cef JS |
492 | } |
493 | ||
448c3ef1 JH |
494 | static void emit_line(const char *set, const char *reset, const char *line, int len) |
495 | { | |
448c3ef1 JH |
496 | fputs(set, stdout); |
497 | fwrite(line, len, 1, stdout); | |
448c3ef1 | 498 | fputs(reset, stdout); |
448c3ef1 JH |
499 | } |
500 | ||
c5a8c3ec JS |
501 | static void emit_add_line(const char *reset, struct emit_callback *ecbdata, const char *line, int len) |
502 | { | |
503 | const char *ws = diff_get_color(ecbdata->color_diff, DIFF_WHITESPACE); | |
504 | const char *set = diff_get_color(ecbdata->color_diff, DIFF_FILE_NEW); | |
505 | ||
506 | if (!*ws) | |
507 | emit_line(set, reset, line, len); | |
c1795bb0 WC |
508 | else { |
509 | /* Emit just the prefix, then the rest. */ | |
510 | emit_line(set, reset, line, ecbdata->nparents); | |
511 | (void)check_and_emit_line(line + ecbdata->nparents, | |
512 | len - ecbdata->nparents, ecbdata->ws_rule, | |
513 | stdout, set, reset, ws); | |
514 | } | |
c5a8c3ec JS |
515 | } |
516 | ||
cd112cef | 517 | static void fn_out_consume(void *priv, char *line, unsigned long len) |
6973dcae JH |
518 | { |
519 | int i; | |
448c3ef1 | 520 | int color; |
6973dcae | 521 | struct emit_callback *ecbdata = priv; |
ce436973 JK |
522 | const char *set = diff_get_color(ecbdata->color_diff, DIFF_METAINFO); |
523 | const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET); | |
6973dcae | 524 | |
34a5e1a2 JS |
525 | *(ecbdata->found_changesp) = 1; |
526 | ||
6973dcae | 527 | if (ecbdata->label_path[0]) { |
1a9eb3b9 JH |
528 | const char *name_a_tab, *name_b_tab; |
529 | ||
530 | name_a_tab = strchr(ecbdata->label_path[0], ' ') ? "\t" : ""; | |
531 | name_b_tab = strchr(ecbdata->label_path[1], ' ') ? "\t" : ""; | |
532 | ||
533 | printf("%s--- %s%s%s\n", | |
534 | set, ecbdata->label_path[0], reset, name_a_tab); | |
535 | printf("%s+++ %s%s%s\n", | |
536 | set, ecbdata->label_path[1], reset, name_b_tab); | |
6973dcae JH |
537 | ecbdata->label_path[0] = ecbdata->label_path[1] = NULL; |
538 | } | |
cd112cef JS |
539 | |
540 | /* This is not really necessary for now because | |
541 | * this codepath only deals with two-way diffs. | |
542 | */ | |
543 | for (i = 0; i < len && line[i] == '@'; i++) | |
544 | ; | |
545 | if (2 <= i && i < len && line[i] == ' ') { | |
546 | ecbdata->nparents = i - 1; | |
448c3ef1 JH |
547 | emit_line(diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO), |
548 | reset, line, len); | |
549 | return; | |
cd112cef | 550 | } |
448c3ef1 JH |
551 | |
552 | if (len < ecbdata->nparents) { | |
50f575fc | 553 | set = reset; |
448c3ef1 JH |
554 | emit_line(reset, reset, line, len); |
555 | return; | |
cd112cef | 556 | } |
448c3ef1 JH |
557 | |
558 | color = DIFF_PLAIN; | |
559 | if (ecbdata->diff_words && ecbdata->nparents != 1) | |
560 | /* fall back to normal diff */ | |
561 | free_diff_words_data(ecbdata); | |
562 | if (ecbdata->diff_words) { | |
563 | if (line[0] == '-') { | |
564 | diff_words_append(line, len, | |
565 | &ecbdata->diff_words->minus); | |
566 | return; | |
567 | } else if (line[0] == '+') { | |
568 | diff_words_append(line, len, | |
569 | &ecbdata->diff_words->plus); | |
570 | return; | |
571 | } | |
572 | if (ecbdata->diff_words->minus.text.size || | |
573 | ecbdata->diff_words->plus.text.size) | |
574 | diff_words_show(ecbdata->diff_words); | |
575 | line++; | |
50f575fc | 576 | len--; |
448c3ef1 JH |
577 | emit_line(set, reset, line, len); |
578 | return; | |
579 | } | |
580 | for (i = 0; i < ecbdata->nparents && len; i++) { | |
581 | if (line[i] == '-') | |
582 | color = DIFF_FILE_OLD; | |
583 | else if (line[i] == '+') | |
584 | color = DIFF_FILE_NEW; | |
585 | } | |
586 | ||
587 | if (color != DIFF_FILE_NEW) { | |
588 | emit_line(diff_get_color(ecbdata->color_diff, color), | |
589 | reset, line, len); | |
590 | return; | |
591 | } | |
592 | emit_add_line(reset, ecbdata, line, len); | |
6973dcae JH |
593 | } |
594 | ||
595 | static char *pprint_rename(const char *a, const char *b) | |
596 | { | |
597 | const char *old = a; | |
598 | const char *new = b; | |
663af342 | 599 | struct strbuf name; |
6973dcae JH |
600 | int pfx_length, sfx_length; |
601 | int len_a = strlen(a); | |
602 | int len_b = strlen(b); | |
663af342 | 603 | int a_midlen, b_midlen; |
e5bfbf9b AJ |
604 | int qlen_a = quote_c_style(a, NULL, NULL, 0); |
605 | int qlen_b = quote_c_style(b, NULL, NULL, 0); | |
606 | ||
663af342 | 607 | strbuf_init(&name, 0); |
e5bfbf9b | 608 | if (qlen_a || qlen_b) { |
663af342 PH |
609 | quote_c_style(a, &name, NULL, 0); |
610 | strbuf_addstr(&name, " => "); | |
611 | quote_c_style(b, &name, NULL, 0); | |
b315c5c0 | 612 | return strbuf_detach(&name, NULL); |
e5bfbf9b | 613 | } |
6973dcae JH |
614 | |
615 | /* Find common prefix */ | |
616 | pfx_length = 0; | |
617 | while (*old && *new && *old == *new) { | |
618 | if (*old == '/') | |
619 | pfx_length = old - a + 1; | |
620 | old++; | |
621 | new++; | |
622 | } | |
623 | ||
624 | /* Find common suffix */ | |
625 | old = a + len_a; | |
626 | new = b + len_b; | |
627 | sfx_length = 0; | |
628 | while (a <= old && b <= new && *old == *new) { | |
629 | if (*old == '/') | |
630 | sfx_length = len_a - (old - a); | |
631 | old--; | |
632 | new--; | |
633 | } | |
634 | ||
635 | /* | |
636 | * pfx{mid-a => mid-b}sfx | |
637 | * {pfx-a => pfx-b}sfx | |
638 | * pfx{sfx-a => sfx-b} | |
639 | * name-a => name-b | |
640 | */ | |
663af342 PH |
641 | a_midlen = len_a - pfx_length - sfx_length; |
642 | b_midlen = len_b - pfx_length - sfx_length; | |
643 | if (a_midlen < 0) | |
644 | a_midlen = 0; | |
645 | if (b_midlen < 0) | |
646 | b_midlen = 0; | |
647 | ||
648 | strbuf_grow(&name, pfx_length + a_midlen + b_midlen + sfx_length + 7); | |
6973dcae | 649 | if (pfx_length + sfx_length) { |
663af342 PH |
650 | strbuf_add(&name, a, pfx_length); |
651 | strbuf_addch(&name, '{'); | |
6973dcae | 652 | } |
663af342 PH |
653 | strbuf_add(&name, a + pfx_length, a_midlen); |
654 | strbuf_addstr(&name, " => "); | |
655 | strbuf_add(&name, b + pfx_length, b_midlen); | |
656 | if (pfx_length + sfx_length) { | |
657 | strbuf_addch(&name, '}'); | |
658 | strbuf_add(&name, a + len_a - sfx_length, sfx_length); | |
6973dcae | 659 | } |
b315c5c0 | 660 | return strbuf_detach(&name, NULL); |
6973dcae JH |
661 | } |
662 | ||
663 | struct diffstat_t { | |
664 | struct xdiff_emit_state xm; | |
665 | ||
666 | int nr; | |
667 | int alloc; | |
668 | struct diffstat_file { | |
f604652e | 669 | char *from_name; |
6973dcae | 670 | char *name; |
f604652e | 671 | char *print_name; |
6973dcae JH |
672 | unsigned is_unmerged:1; |
673 | unsigned is_binary:1; | |
674 | unsigned is_renamed:1; | |
675 | unsigned int added, deleted; | |
676 | } **files; | |
677 | }; | |
678 | ||
679 | static struct diffstat_file *diffstat_add(struct diffstat_t *diffstat, | |
680 | const char *name_a, | |
681 | const char *name_b) | |
682 | { | |
683 | struct diffstat_file *x; | |
684 | x = xcalloc(sizeof (*x), 1); | |
685 | if (diffstat->nr == diffstat->alloc) { | |
686 | diffstat->alloc = alloc_nr(diffstat->alloc); | |
687 | diffstat->files = xrealloc(diffstat->files, | |
688 | diffstat->alloc * sizeof(x)); | |
689 | } | |
690 | diffstat->files[diffstat->nr++] = x; | |
691 | if (name_b) { | |
f604652e JH |
692 | x->from_name = xstrdup(name_a); |
693 | x->name = xstrdup(name_b); | |
6973dcae JH |
694 | x->is_renamed = 1; |
695 | } | |
f604652e JH |
696 | else { |
697 | x->from_name = NULL; | |
9befac47 | 698 | x->name = xstrdup(name_a); |
f604652e | 699 | } |
6973dcae JH |
700 | return x; |
701 | } | |
702 | ||
703 | static void diffstat_consume(void *priv, char *line, unsigned long len) | |
704 | { | |
705 | struct diffstat_t *diffstat = priv; | |
706 | struct diffstat_file *x = diffstat->files[diffstat->nr - 1]; | |
707 | ||
708 | if (line[0] == '+') | |
709 | x->added++; | |
710 | else if (line[0] == '-') | |
711 | x->deleted++; | |
712 | } | |
713 | ||
698ce6f8 | 714 | const char mime_boundary_leader[] = "------------"; |
6973dcae | 715 | |
a2540023 JH |
716 | static int scale_linear(int it, int width, int max_change) |
717 | { | |
718 | /* | |
3ed74e60 JS |
719 | * make sure that at least one '-' is printed if there were deletions, |
720 | * and likewise for '+'. | |
a2540023 | 721 | */ |
3ed74e60 JS |
722 | if (max_change < 2) |
723 | return it; | |
724 | return ((it - 1) * (width - 1) + max_change - 1) / (max_change - 1); | |
a2540023 JH |
725 | } |
726 | ||
785f7432 JH |
727 | static void show_name(const char *prefix, const char *name, int len, |
728 | const char *reset, const char *set) | |
a2540023 | 729 | { |
785f7432 | 730 | printf(" %s%s%-*s%s |", set, prefix, len, name, reset); |
a2540023 JH |
731 | } |
732 | ||
785f7432 | 733 | static void show_graph(char ch, int cnt, const char *set, const char *reset) |
a2540023 JH |
734 | { |
735 | if (cnt <= 0) | |
736 | return; | |
785f7432 | 737 | printf("%s", set); |
a2540023 JH |
738 | while (cnt--) |
739 | putchar(ch); | |
785f7432 | 740 | printf("%s", reset); |
a2540023 JH |
741 | } |
742 | ||
f604652e JH |
743 | static void fill_print_name(struct diffstat_file *file) |
744 | { | |
745 | char *pname; | |
746 | ||
747 | if (file->print_name) | |
748 | return; | |
749 | ||
750 | if (!file->is_renamed) { | |
751 | struct strbuf buf; | |
752 | strbuf_init(&buf, 0); | |
753 | if (quote_c_style(file->name, &buf, NULL, 0)) { | |
754 | pname = strbuf_detach(&buf, NULL); | |
755 | } else { | |
756 | pname = file->name; | |
757 | strbuf_release(&buf); | |
758 | } | |
759 | } else { | |
760 | pname = pprint_rename(file->from_name, file->name); | |
761 | } | |
762 | file->print_name = pname; | |
763 | } | |
764 | ||
a2540023 | 765 | static void show_stats(struct diffstat_t* data, struct diff_options *options) |
6973dcae | 766 | { |
6973dcae | 767 | int i, len, add, del, total, adds = 0, dels = 0; |
a2540023 | 768 | int max_change = 0, max_len = 0; |
6973dcae | 769 | int total_files = data->nr; |
a2540023 | 770 | int width, name_width; |
785f7432 | 771 | const char *reset, *set, *add_c, *del_c; |
6973dcae JH |
772 | |
773 | if (data->nr == 0) | |
774 | return; | |
775 | ||
a2540023 JH |
776 | width = options->stat_width ? options->stat_width : 80; |
777 | name_width = options->stat_name_width ? options->stat_name_width : 50; | |
778 | ||
779 | /* Sanity: give at least 5 columns to the graph, | |
780 | * but leave at least 10 columns for the name. | |
781 | */ | |
782 | if (width < name_width + 15) { | |
783 | if (name_width <= 25) | |
784 | width = name_width + 15; | |
785 | else | |
786 | name_width = width - 15; | |
787 | } | |
788 | ||
789 | /* Find the longest filename and max number of changes */ | |
8f67f8ae PH |
790 | reset = diff_get_color_opt(options, DIFF_RESET); |
791 | set = diff_get_color_opt(options, DIFF_PLAIN); | |
792 | add_c = diff_get_color_opt(options, DIFF_FILE_NEW); | |
793 | del_c = diff_get_color_opt(options, DIFF_FILE_OLD); | |
785f7432 | 794 | |
6973dcae JH |
795 | for (i = 0; i < data->nr; i++) { |
796 | struct diffstat_file *file = data->files[i]; | |
a2540023 | 797 | int change = file->added + file->deleted; |
f604652e JH |
798 | fill_print_name(file); |
799 | len = strlen(file->print_name); | |
6973dcae JH |
800 | if (max_len < len) |
801 | max_len = len; | |
802 | ||
803 | if (file->is_binary || file->is_unmerged) | |
804 | continue; | |
a2540023 JH |
805 | if (max_change < change) |
806 | max_change = change; | |
6973dcae JH |
807 | } |
808 | ||
a2540023 JH |
809 | /* Compute the width of the graph part; |
810 | * 10 is for one blank at the beginning of the line plus | |
811 | * " | count " between the name and the graph. | |
812 | * | |
813 | * From here on, name_width is the width of the name area, | |
814 | * and width is the width of the graph area. | |
815 | */ | |
816 | name_width = (name_width < max_len) ? name_width : max_len; | |
817 | if (width < (name_width + 10) + max_change) | |
818 | width = width - (name_width + 10); | |
819 | else | |
820 | width = max_change; | |
821 | ||
6973dcae | 822 | for (i = 0; i < data->nr; i++) { |
d2543b8e | 823 | const char *prefix = ""; |
f604652e | 824 | char *name = data->files[i]->print_name; |
6973dcae JH |
825 | int added = data->files[i]->added; |
826 | int deleted = data->files[i]->deleted; | |
a2540023 | 827 | int name_len; |
6973dcae JH |
828 | |
829 | /* | |
830 | * "scale" the filename | |
831 | */ | |
a2540023 JH |
832 | len = name_width; |
833 | name_len = strlen(name); | |
834 | if (name_width < name_len) { | |
6973dcae JH |
835 | char *slash; |
836 | prefix = "..."; | |
a2540023 JH |
837 | len -= 3; |
838 | name += name_len - len; | |
6973dcae JH |
839 | slash = strchr(name, '/'); |
840 | if (slash) | |
841 | name = slash; | |
842 | } | |
6973dcae JH |
843 | |
844 | if (data->files[i]->is_binary) { | |
785f7432 | 845 | show_name(prefix, name, len, reset, set); |
b1882587 AP |
846 | printf(" Bin "); |
847 | printf("%s%d%s", del_c, deleted, reset); | |
848 | printf(" -> "); | |
849 | printf("%s%d%s", add_c, added, reset); | |
850 | printf(" bytes"); | |
851 | printf("\n"); | |
f604652e | 852 | continue; |
6973dcae JH |
853 | } |
854 | else if (data->files[i]->is_unmerged) { | |
785f7432 | 855 | show_name(prefix, name, len, reset, set); |
a2540023 | 856 | printf(" Unmerged\n"); |
f604652e | 857 | continue; |
6973dcae JH |
858 | } |
859 | else if (!data->files[i]->is_renamed && | |
860 | (added + deleted == 0)) { | |
861 | total_files--; | |
f604652e | 862 | continue; |
6973dcae JH |
863 | } |
864 | ||
a2540023 JH |
865 | /* |
866 | * scale the add/delete | |
867 | */ | |
6973dcae JH |
868 | add = added; |
869 | del = deleted; | |
870 | total = add + del; | |
871 | adds += add; | |
872 | dels += del; | |
873 | ||
a2540023 | 874 | if (width <= max_change) { |
a2540023 | 875 | add = scale_linear(add, width, max_change); |
3ed74e60 JS |
876 | del = scale_linear(del, width, max_change); |
877 | total = add + del; | |
6973dcae | 878 | } |
785f7432 | 879 | show_name(prefix, name, len, reset, set); |
a2540023 | 880 | printf("%5d ", added + deleted); |
785f7432 JH |
881 | show_graph('+', add, add_c, reset); |
882 | show_graph('-', del, del_c, reset); | |
a2540023 | 883 | putchar('\n'); |
6973dcae | 884 | } |
785f7432 JH |
885 | printf("%s %d files changed, %d insertions(+), %d deletions(-)%s\n", |
886 | set, total_files, adds, dels, reset); | |
6973dcae JH |
887 | } |
888 | ||
ebd124c6 NP |
889 | static void show_shortstats(struct diffstat_t* data) |
890 | { | |
891 | int i, adds = 0, dels = 0, total_files = data->nr; | |
892 | ||
893 | if (data->nr == 0) | |
894 | return; | |
895 | ||
896 | for (i = 0; i < data->nr; i++) { | |
897 | if (!data->files[i]->is_binary && | |
898 | !data->files[i]->is_unmerged) { | |
899 | int added = data->files[i]->added; | |
900 | int deleted= data->files[i]->deleted; | |
901 | if (!data->files[i]->is_renamed && | |
902 | (added + deleted == 0)) { | |
903 | total_files--; | |
904 | } else { | |
905 | adds += added; | |
906 | dels += deleted; | |
907 | } | |
908 | } | |
ebd124c6 | 909 | } |
ebd124c6 NP |
910 | printf(" %d files changed, %d insertions(+), %d deletions(-)\n", |
911 | total_files, adds, dels); | |
912 | } | |
913 | ||
74e2abe5 JH |
914 | static void show_numstat(struct diffstat_t* data, struct diff_options *options) |
915 | { | |
916 | int i; | |
917 | ||
f604652e JH |
918 | if (data->nr == 0) |
919 | return; | |
920 | ||
74e2abe5 JH |
921 | for (i = 0; i < data->nr; i++) { |
922 | struct diffstat_file *file = data->files[i]; | |
923 | ||
bfddbc5e JH |
924 | if (file->is_binary) |
925 | printf("-\t-\t"); | |
926 | else | |
927 | printf("%d\t%d\t", file->added, file->deleted); | |
f604652e JH |
928 | if (options->line_termination) { |
929 | fill_print_name(file); | |
930 | if (!file->is_renamed) | |
931 | write_name_quoted(file->name, stdout, | |
932 | options->line_termination); | |
933 | else { | |
934 | fputs(file->print_name, stdout); | |
935 | putchar(options->line_termination); | |
936 | } | |
663af342 | 937 | } else { |
f604652e JH |
938 | if (file->is_renamed) { |
939 | putchar('\0'); | |
940 | write_name_quoted(file->from_name, stdout, '\0'); | |
941 | } | |
942 | write_name_quoted(file->name, stdout, '\0'); | |
663af342 | 943 | } |
74e2abe5 JH |
944 | } |
945 | } | |
946 | ||
f604652e JH |
947 | static void free_diffstat_info(struct diffstat_t *diffstat) |
948 | { | |
949 | int i; | |
950 | for (i = 0; i < diffstat->nr; i++) { | |
951 | struct diffstat_file *f = diffstat->files[i]; | |
952 | if (f->name != f->print_name) | |
953 | free(f->print_name); | |
954 | free(f->name); | |
955 | free(f->from_name); | |
956 | free(f); | |
957 | } | |
958 | free(diffstat->files); | |
959 | } | |
960 | ||
88246898 JS |
961 | struct checkdiff_t { |
962 | struct xdiff_emit_state xm; | |
963 | const char *filename; | |
c5a8c3ec | 964 | int lineno, color_diff; |
cf1b7869 | 965 | unsigned ws_rule; |
62c64895 | 966 | unsigned status; |
88246898 JS |
967 | }; |
968 | ||
969 | static void checkdiff_consume(void *priv, char *line, unsigned long len) | |
970 | { | |
971 | struct checkdiff_t *data = priv; | |
c5a8c3ec JS |
972 | const char *ws = diff_get_color(data->color_diff, DIFF_WHITESPACE); |
973 | const char *reset = diff_get_color(data->color_diff, DIFF_RESET); | |
974 | const char *set = diff_get_color(data->color_diff, DIFF_FILE_NEW); | |
c1795bb0 | 975 | char *err; |
88246898 JS |
976 | |
977 | if (line[0] == '+') { | |
c1795bb0 WC |
978 | data->status = check_and_emit_line(line + 1, len - 1, |
979 | data->ws_rule, NULL, NULL, NULL, NULL); | |
980 | if (!data->status) | |
981 | return; | |
982 | err = whitespace_error_string(data->status); | |
45e2a4b2 | 983 | printf("%s:%d: %s.\n", data->filename, data->lineno, err); |
c1795bb0 WC |
984 | free(err); |
985 | emit_line(set, reset, line, 1); | |
986 | (void)check_and_emit_line(line + 1, len - 1, data->ws_rule, | |
987 | stdout, set, reset, ws); | |
e6d40d65 | 988 | data->lineno++; |
88246898 JS |
989 | } else if (line[0] == ' ') |
990 | data->lineno++; | |
991 | else if (line[0] == '@') { | |
992 | char *plus = strchr(line, '+'); | |
993 | if (plus) | |
9e848163 | 994 | data->lineno = strtol(plus, NULL, 10); |
88246898 JS |
995 | else |
996 | die("invalid diff"); | |
997 | } | |
998 | } | |
999 | ||
0660626c JH |
1000 | static unsigned char *deflate_it(char *data, |
1001 | unsigned long size, | |
1002 | unsigned long *result_size) | |
051308f6 | 1003 | { |
0660626c JH |
1004 | int bound; |
1005 | unsigned char *deflated; | |
1006 | z_stream stream; | |
1007 | ||
1008 | memset(&stream, 0, sizeof(stream)); | |
12f6c308 | 1009 | deflateInit(&stream, zlib_compression_level); |
0660626c JH |
1010 | bound = deflateBound(&stream, size); |
1011 | deflated = xmalloc(bound); | |
1012 | stream.next_out = deflated; | |
1013 | stream.avail_out = bound; | |
1014 | ||
1015 | stream.next_in = (unsigned char *)data; | |
1016 | stream.avail_in = size; | |
1017 | while (deflate(&stream, Z_FINISH) == Z_OK) | |
1018 | ; /* nothing */ | |
1019 | deflateEnd(&stream); | |
1020 | *result_size = stream.total_out; | |
1021 | return deflated; | |
051308f6 JH |
1022 | } |
1023 | ||
d4c452f0 | 1024 | static void emit_binary_diff_body(mmfile_t *one, mmfile_t *two) |
051308f6 | 1025 | { |
0660626c JH |
1026 | void *cp; |
1027 | void *delta; | |
1028 | void *deflated; | |
1029 | void *data; | |
1030 | unsigned long orig_size; | |
1031 | unsigned long delta_size; | |
1032 | unsigned long deflate_size; | |
1033 | unsigned long data_size; | |
051308f6 | 1034 | |
0660626c JH |
1035 | /* We could do deflated delta, or we could do just deflated two, |
1036 | * whichever is smaller. | |
051308f6 | 1037 | */ |
0660626c JH |
1038 | delta = NULL; |
1039 | deflated = deflate_it(two->ptr, two->size, &deflate_size); | |
1040 | if (one->size && two->size) { | |
1041 | delta = diff_delta(one->ptr, one->size, | |
1042 | two->ptr, two->size, | |
1043 | &delta_size, deflate_size); | |
1044 | if (delta) { | |
1045 | void *to_free = delta; | |
1046 | orig_size = delta_size; | |
1047 | delta = deflate_it(delta, delta_size, &delta_size); | |
1048 | free(to_free); | |
051308f6 JH |
1049 | } |
1050 | } | |
051308f6 | 1051 | |
0660626c JH |
1052 | if (delta && delta_size < deflate_size) { |
1053 | printf("delta %lu\n", orig_size); | |
1054 | free(deflated); | |
1055 | data = delta; | |
1056 | data_size = delta_size; | |
1057 | } | |
1058 | else { | |
1059 | printf("literal %lu\n", two->size); | |
1060 | free(delta); | |
1061 | data = deflated; | |
1062 | data_size = deflate_size; | |
1063 | } | |
051308f6 | 1064 | |
0660626c JH |
1065 | /* emit data encoded in base85 */ |
1066 | cp = data; | |
1067 | while (data_size) { | |
1068 | int bytes = (52 < data_size) ? 52 : data_size; | |
051308f6 | 1069 | char line[70]; |
0660626c | 1070 | data_size -= bytes; |
051308f6 JH |
1071 | if (bytes <= 26) |
1072 | line[0] = bytes + 'A' - 1; | |
1073 | else | |
1074 | line[0] = bytes - 26 + 'a' - 1; | |
1075 | encode_85(line + 1, cp, bytes); | |
1d7f171c | 1076 | cp = (char *) cp + bytes; |
051308f6 JH |
1077 | puts(line); |
1078 | } | |
1079 | printf("\n"); | |
0660626c | 1080 | free(data); |
051308f6 JH |
1081 | } |
1082 | ||
d4c452f0 JH |
1083 | static void emit_binary_diff(mmfile_t *one, mmfile_t *two) |
1084 | { | |
1085 | printf("GIT binary patch\n"); | |
1086 | emit_binary_diff_body(one, two); | |
1087 | emit_binary_diff_body(two, one); | |
1088 | } | |
1089 | ||
8c701249 JH |
1090 | static void setup_diff_attr_check(struct git_attr_check *check) |
1091 | { | |
1092 | static struct git_attr *attr_diff; | |
1093 | ||
29a3eefd | 1094 | if (!attr_diff) { |
8c701249 | 1095 | attr_diff = git_attr("diff", 4); |
29a3eefd JH |
1096 | } |
1097 | check[0].attr = attr_diff; | |
8c701249 JH |
1098 | } |
1099 | ||
29a3eefd | 1100 | static void diff_filespec_check_attr(struct diff_filespec *one) |
6973dcae | 1101 | { |
e0e324a4 | 1102 | struct git_attr_check attr_diff_check; |
2c3fa66f | 1103 | int check_from_data = 0; |
8c701249 | 1104 | |
29a3eefd JH |
1105 | if (one->checked_attr) |
1106 | return; | |
1107 | ||
e0e324a4 | 1108 | setup_diff_attr_check(&attr_diff_check); |
29a3eefd | 1109 | one->is_binary = 0; |
e0e324a4 | 1110 | one->funcname_pattern_ident = NULL; |
29a3eefd | 1111 | |
e0e324a4 | 1112 | if (!git_checkattr(one->path, 1, &attr_diff_check)) { |
29a3eefd JH |
1113 | const char *value; |
1114 | ||
1115 | /* binaryness */ | |
e0e324a4 | 1116 | value = attr_diff_check.value; |
515106fa | 1117 | if (ATTR_TRUE(value)) |
29a3eefd | 1118 | ; |
515106fa | 1119 | else if (ATTR_FALSE(value)) |
29a3eefd | 1120 | one->is_binary = 1; |
2c3fa66f JH |
1121 | else |
1122 | check_from_data = 1; | |
f258475a | 1123 | |
e0e324a4 | 1124 | /* funcname pattern ident */ |
f258475a JH |
1125 | if (ATTR_TRUE(value) || ATTR_FALSE(value) || ATTR_UNSET(value)) |
1126 | ; | |
1127 | else | |
e0e324a4 | 1128 | one->funcname_pattern_ident = value; |
515106fa | 1129 | } |
40250af4 | 1130 | |
2c3fa66f JH |
1131 | if (check_from_data) { |
1132 | if (!one->data && DIFF_FILE_VALID(one)) | |
1133 | diff_populate_filespec(one, 0); | |
29a3eefd | 1134 | |
2c3fa66f JH |
1135 | if (one->data) |
1136 | one->is_binary = buffer_is_binary(one->data, one->size); | |
1137 | } | |
29a3eefd JH |
1138 | } |
1139 | ||
1140 | int diff_filespec_is_binary(struct diff_filespec *one) | |
1141 | { | |
1142 | diff_filespec_check_attr(one); | |
1143 | return one->is_binary; | |
6973dcae JH |
1144 | } |
1145 | ||
e0e324a4 | 1146 | static const char *funcname_pattern(const char *ident) |
f258475a | 1147 | { |
e0e324a4 | 1148 | struct funcname_pattern *pp; |
f258475a | 1149 | |
e0e324a4 JH |
1150 | read_config_if_needed(); |
1151 | for (pp = funcname_pattern_list; pp; pp = pp->next) | |
1152 | if (!strcmp(ident, pp->name)) | |
1153 | return pp->pattern; | |
f258475a JH |
1154 | return NULL; |
1155 | } | |
1156 | ||
d3a93dc9 JH |
1157 | static struct builtin_funcname_pattern { |
1158 | const char *name; | |
1159 | const char *pattern; | |
1160 | } builtin_funcname_pattern[] = { | |
1161 | { "java", "!^[ ]*\\(catch\\|do\\|for\\|if\\|instanceof\\|" | |
1162 | "new\\|return\\|switch\\|throw\\|while\\)\n" | |
1163 | "^[ ]*\\(\\([ ]*" | |
1164 | "[A-Za-z_][A-Za-z_0-9]*\\)\\{2,\\}" | |
1165 | "[ ]*([^;]*$\\)" }, | |
1166 | { "tex", "^\\(\\\\\\(sub\\)*section{.*\\)$" }, | |
1167 | }; | |
1168 | ||
e0e324a4 | 1169 | static const char *diff_funcname_pattern(struct diff_filespec *one) |
f258475a | 1170 | { |
e0e324a4 | 1171 | const char *ident, *pattern; |
d3a93dc9 | 1172 | int i; |
f258475a JH |
1173 | |
1174 | diff_filespec_check_attr(one); | |
e0e324a4 | 1175 | ident = one->funcname_pattern_ident; |
f258475a JH |
1176 | |
1177 | if (!ident) | |
1178 | /* | |
1179 | * If the config file has "funcname.default" defined, that | |
1180 | * regexp is used; otherwise NULL is returned and xemit uses | |
1181 | * the built-in default. | |
1182 | */ | |
e0e324a4 | 1183 | return funcname_pattern("default"); |
f258475a JH |
1184 | |
1185 | /* Look up custom "funcname.$ident" regexp from config. */ | |
e0e324a4 JH |
1186 | pattern = funcname_pattern(ident); |
1187 | if (pattern) | |
1188 | return pattern; | |
f258475a JH |
1189 | |
1190 | /* | |
1191 | * And define built-in fallback patterns here. Note that | |
1192 | * these can be overriden by the user's config settings. | |
1193 | */ | |
d3a93dc9 JH |
1194 | for (i = 0; i < ARRAY_SIZE(builtin_funcname_pattern); i++) |
1195 | if (!strcmp(ident, builtin_funcname_pattern[i].name)) | |
1196 | return builtin_funcname_pattern[i].pattern; | |
f258475a JH |
1197 | |
1198 | return NULL; | |
1199 | } | |
1200 | ||
6973dcae JH |
1201 | static void builtin_diff(const char *name_a, |
1202 | const char *name_b, | |
1203 | struct diff_filespec *one, | |
1204 | struct diff_filespec *two, | |
1205 | const char *xfrm_msg, | |
051308f6 | 1206 | struct diff_options *o, |
6973dcae JH |
1207 | int complete_rewrite) |
1208 | { | |
1209 | mmfile_t mf1, mf2; | |
1210 | const char *lbl[2]; | |
1211 | char *a_one, *b_two; | |
8f67f8ae PH |
1212 | const char *set = diff_get_color_opt(o, DIFF_METAINFO); |
1213 | const char *reset = diff_get_color_opt(o, DIFF_RESET); | |
6973dcae | 1214 | |
50892777 JH |
1215 | a_one = quote_two("a/", name_a + (*name_a == '/')); |
1216 | b_two = quote_two("b/", name_b + (*name_b == '/')); | |
6973dcae JH |
1217 | lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null"; |
1218 | lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null"; | |
50f575fc | 1219 | printf("%sdiff --git %s %s%s\n", set, a_one, b_two, reset); |
6973dcae JH |
1220 | if (lbl[0][0] == '/') { |
1221 | /* /dev/null */ | |
50f575fc LT |
1222 | printf("%snew file mode %06o%s\n", set, two->mode, reset); |
1223 | if (xfrm_msg && xfrm_msg[0]) | |
1224 | printf("%s%s%s\n", set, xfrm_msg, reset); | |
6973dcae JH |
1225 | } |
1226 | else if (lbl[1][0] == '/') { | |
50f575fc LT |
1227 | printf("%sdeleted file mode %06o%s\n", set, one->mode, reset); |
1228 | if (xfrm_msg && xfrm_msg[0]) | |
1229 | printf("%s%s%s\n", set, xfrm_msg, reset); | |
6973dcae JH |
1230 | } |
1231 | else { | |
1232 | if (one->mode != two->mode) { | |
50f575fc LT |
1233 | printf("%sold mode %06o%s\n", set, one->mode, reset); |
1234 | printf("%snew mode %06o%s\n", set, two->mode, reset); | |
cd112cef | 1235 | } |
50f575fc LT |
1236 | if (xfrm_msg && xfrm_msg[0]) |
1237 | printf("%s%s%s\n", set, xfrm_msg, reset); | |
6973dcae JH |
1238 | /* |
1239 | * we do not run diff between different kind | |
1240 | * of objects. | |
1241 | */ | |
1242 | if ((one->mode ^ two->mode) & S_IFMT) | |
1243 | goto free_ab_and_return; | |
1244 | if (complete_rewrite) { | |
13e36ec5 | 1245 | emit_rewrite_diff(name_a, name_b, one, two, |
8f67f8ae | 1246 | DIFF_OPT_TST(o, COLOR_DIFF)); |
34a5e1a2 | 1247 | o->found_changes = 1; |
6973dcae JH |
1248 | goto free_ab_and_return; |
1249 | } | |
1250 | } | |
1251 | ||
1252 | if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0) | |
1253 | die("unable to read files to diff"); | |
1254 | ||
8f67f8ae | 1255 | if (!DIFF_OPT_TST(o, TEXT) && |
29a3eefd | 1256 | (diff_filespec_is_binary(one) || diff_filespec_is_binary(two))) { |
0660626c JH |
1257 | /* Quite common confusing case */ |
1258 | if (mf1.size == mf2.size && | |
1259 | !memcmp(mf1.ptr, mf2.ptr, mf1.size)) | |
1260 | goto free_ab_and_return; | |
8f67f8ae | 1261 | if (DIFF_OPT_TST(o, BINARY)) |
051308f6 JH |
1262 | emit_binary_diff(&mf1, &mf2); |
1263 | else | |
1264 | printf("Binary files %s and %s differ\n", | |
1265 | lbl[0], lbl[1]); | |
34a5e1a2 | 1266 | o->found_changes = 1; |
051308f6 | 1267 | } |
6973dcae JH |
1268 | else { |
1269 | /* Crazy xdl interfaces.. */ | |
1270 | const char *diffopts = getenv("GIT_DIFF_OPTS"); | |
1271 | xpparam_t xpp; | |
1272 | xdemitconf_t xecfg; | |
1273 | xdemitcb_t ecb; | |
1274 | struct emit_callback ecbdata; | |
e0e324a4 | 1275 | const char *funcname_pattern; |
f258475a | 1276 | |
e0e324a4 JH |
1277 | funcname_pattern = diff_funcname_pattern(one); |
1278 | if (!funcname_pattern) | |
1279 | funcname_pattern = diff_funcname_pattern(two); | |
6973dcae | 1280 | |
30b25010 | 1281 | memset(&xecfg, 0, sizeof(xecfg)); |
cd112cef | 1282 | memset(&ecbdata, 0, sizeof(ecbdata)); |
6973dcae | 1283 | ecbdata.label_path = lbl; |
8f67f8ae | 1284 | ecbdata.color_diff = DIFF_OPT_TST(o, COLOR_DIFF); |
34a5e1a2 | 1285 | ecbdata.found_changesp = &o->found_changes; |
cf1b7869 | 1286 | ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a); |
0d21efa5 | 1287 | xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts; |
ee1e5412 | 1288 | xecfg.ctxlen = o->context; |
6973dcae | 1289 | xecfg.flags = XDL_EMIT_FUNCNAMES; |
e0e324a4 JH |
1290 | if (funcname_pattern) |
1291 | xdiff_set_find_func(&xecfg, funcname_pattern); | |
6973dcae JH |
1292 | if (!diffopts) |
1293 | ; | |
cc44c765 | 1294 | else if (!prefixcmp(diffopts, "--unified=")) |
6973dcae | 1295 | xecfg.ctxlen = strtoul(diffopts + 10, NULL, 10); |
cc44c765 | 1296 | else if (!prefixcmp(diffopts, "-u")) |
6973dcae | 1297 | xecfg.ctxlen = strtoul(diffopts + 2, NULL, 10); |
cd112cef | 1298 | ecb.outf = xdiff_outf; |
6973dcae | 1299 | ecb.priv = &ecbdata; |
cd112cef | 1300 | ecbdata.xm.consume = fn_out_consume; |
8f67f8ae | 1301 | if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS)) |
f59a59e2 JS |
1302 | ecbdata.diff_words = |
1303 | xcalloc(1, sizeof(struct diff_words_data)); | |
c279d7e9 | 1304 | xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb); |
8f67f8ae | 1305 | if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS)) |
f59a59e2 | 1306 | free_diff_words_data(&ecbdata); |
6973dcae JH |
1307 | } |
1308 | ||
1309 | free_ab_and_return: | |
fc3abdf5 JH |
1310 | diff_free_filespec_data(one); |
1311 | diff_free_filespec_data(two); | |
6973dcae JH |
1312 | free(a_one); |
1313 | free(b_two); | |
1314 | return; | |
1315 | } | |
1316 | ||
1317 | static void builtin_diffstat(const char *name_a, const char *name_b, | |
1318 | struct diff_filespec *one, | |
1319 | struct diff_filespec *two, | |
710158e3 | 1320 | struct diffstat_t *diffstat, |
0d21efa5 | 1321 | struct diff_options *o, |
710158e3 | 1322 | int complete_rewrite) |
6973dcae JH |
1323 | { |
1324 | mmfile_t mf1, mf2; | |
1325 | struct diffstat_file *data; | |
1326 | ||
1327 | data = diffstat_add(diffstat, name_a, name_b); | |
1328 | ||
1329 | if (!one || !two) { | |
1330 | data->is_unmerged = 1; | |
1331 | return; | |
1332 | } | |
710158e3 JH |
1333 | if (complete_rewrite) { |
1334 | diff_populate_filespec(one, 0); | |
1335 | diff_populate_filespec(two, 0); | |
1336 | data->deleted = count_lines(one->data, one->size); | |
1337 | data->added = count_lines(two->data, two->size); | |
fc3abdf5 | 1338 | goto free_and_return; |
710158e3 | 1339 | } |
6973dcae JH |
1340 | if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0) |
1341 | die("unable to read files to diff"); | |
1342 | ||
29a3eefd | 1343 | if (diff_filespec_is_binary(one) || diff_filespec_is_binary(two)) { |
6973dcae | 1344 | data->is_binary = 1; |
b1882587 AP |
1345 | data->added = mf2.size; |
1346 | data->deleted = mf1.size; | |
1347 | } else { | |
6973dcae JH |
1348 | /* Crazy xdl interfaces.. */ |
1349 | xpparam_t xpp; | |
1350 | xdemitconf_t xecfg; | |
1351 | xdemitcb_t ecb; | |
1352 | ||
30b25010 | 1353 | memset(&xecfg, 0, sizeof(xecfg)); |
0d21efa5 | 1354 | xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts; |
6973dcae JH |
1355 | ecb.outf = xdiff_outf; |
1356 | ecb.priv = diffstat; | |
c279d7e9 | 1357 | xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb); |
6973dcae | 1358 | } |
fc3abdf5 JH |
1359 | |
1360 | free_and_return: | |
1361 | diff_free_filespec_data(one); | |
1362 | diff_free_filespec_data(two); | |
6973dcae JH |
1363 | } |
1364 | ||
88246898 JS |
1365 | static void builtin_checkdiff(const char *name_a, const char *name_b, |
1366 | struct diff_filespec *one, | |
c5a8c3ec | 1367 | struct diff_filespec *two, struct diff_options *o) |
88246898 JS |
1368 | { |
1369 | mmfile_t mf1, mf2; | |
1370 | struct checkdiff_t data; | |
1371 | ||
1372 | if (!two) | |
1373 | return; | |
1374 | ||
1375 | memset(&data, 0, sizeof(data)); | |
1376 | data.xm.consume = checkdiff_consume; | |
1377 | data.filename = name_b ? name_b : name_a; | |
1378 | data.lineno = 0; | |
8f67f8ae | 1379 | data.color_diff = DIFF_OPT_TST(o, COLOR_DIFF); |
cf1b7869 | 1380 | data.ws_rule = whitespace_rule(data.filename); |
88246898 JS |
1381 | |
1382 | if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0) | |
1383 | die("unable to read files to diff"); | |
1384 | ||
29a3eefd | 1385 | if (diff_filespec_is_binary(two)) |
fc3abdf5 | 1386 | goto free_and_return; |
88246898 JS |
1387 | else { |
1388 | /* Crazy xdl interfaces.. */ | |
1389 | xpparam_t xpp; | |
1390 | xdemitconf_t xecfg; | |
1391 | xdemitcb_t ecb; | |
1392 | ||
30b25010 | 1393 | memset(&xecfg, 0, sizeof(xecfg)); |
88246898 | 1394 | xpp.flags = XDF_NEED_MINIMAL; |
88246898 JS |
1395 | ecb.outf = xdiff_outf; |
1396 | ecb.priv = &data; | |
c279d7e9 | 1397 | xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb); |
88246898 | 1398 | } |
fc3abdf5 JH |
1399 | free_and_return: |
1400 | diff_free_filespec_data(one); | |
1401 | diff_free_filespec_data(two); | |
62c64895 WC |
1402 | if (data.status) |
1403 | DIFF_OPT_SET(o, CHECK_FAILED); | |
88246898 JS |
1404 | } |
1405 | ||
6973dcae JH |
1406 | struct diff_filespec *alloc_filespec(const char *path) |
1407 | { | |
1408 | int namelen = strlen(path); | |
1409 | struct diff_filespec *spec = xmalloc(sizeof(*spec) + namelen + 1); | |
1410 | ||
1411 | memset(spec, 0, sizeof(*spec)); | |
1412 | spec->path = (char *)(spec + 1); | |
1413 | memcpy(spec->path, path, namelen+1); | |
9fb88419 | 1414 | spec->count = 1; |
6973dcae JH |
1415 | return spec; |
1416 | } | |
1417 | ||
9fb88419 LT |
1418 | void free_filespec(struct diff_filespec *spec) |
1419 | { | |
1420 | if (!--spec->count) { | |
1421 | diff_free_filespec_data(spec); | |
1422 | free(spec); | |
1423 | } | |
1424 | } | |
1425 | ||
6973dcae JH |
1426 | void fill_filespec(struct diff_filespec *spec, const unsigned char *sha1, |
1427 | unsigned short mode) | |
1428 | { | |
1429 | if (mode) { | |
1430 | spec->mode = canon_mode(mode); | |
e702496e | 1431 | hashcpy(spec->sha1, sha1); |
0bef57ee | 1432 | spec->sha1_valid = !is_null_sha1(sha1); |
6973dcae JH |
1433 | } |
1434 | } | |
1435 | ||
1436 | /* | |
5adf317b | 1437 | * Given a name and sha1 pair, if the index tells us the file in |
6973dcae JH |
1438 | * the work tree has that object contents, return true, so that |
1439 | * prepare_temp_file() does not have to inflate and extract. | |
1440 | */ | |
1510fea7 | 1441 | static int reuse_worktree_file(const char *name, const unsigned char *sha1, int want_file) |
6973dcae JH |
1442 | { |
1443 | struct cache_entry *ce; | |
1444 | struct stat st; | |
1445 | int pos, len; | |
1446 | ||
1447 | /* We do not read the cache ourselves here, because the | |
1448 | * benchmark with my previous version that always reads cache | |
1449 | * shows that it makes things worse for diff-tree comparing | |
1450 | * two linux-2.6 kernel trees in an already checked out work | |
1451 | * tree. This is because most diff-tree comparisons deal with | |
1452 | * only a small number of files, while reading the cache is | |
1453 | * expensive for a large project, and its cost outweighs the | |
1454 | * savings we get by not inflating the object to a temporary | |
1455 | * file. Practically, this code only helps when we are used | |
1456 | * by diff-cache --cached, which does read the cache before | |
1457 | * calling us. | |
1458 | */ | |
1459 | if (!active_cache) | |
1460 | return 0; | |
1461 | ||
1510fea7 SP |
1462 | /* We want to avoid the working directory if our caller |
1463 | * doesn't need the data in a normal file, this system | |
1464 | * is rather slow with its stat/open/mmap/close syscalls, | |
1465 | * and the object is contained in a pack file. The pack | |
1466 | * is probably already open and will be faster to obtain | |
1467 | * the data through than the working directory. Loose | |
1468 | * objects however would tend to be slower as they need | |
1469 | * to be individually opened and inflated. | |
1470 | */ | |
5caf9232 | 1471 | if (!FAST_WORKING_DIRECTORY && !want_file && has_sha1_pack(sha1, NULL)) |
1510fea7 SP |
1472 | return 0; |
1473 | ||
6973dcae JH |
1474 | len = strlen(name); |
1475 | pos = cache_name_pos(name, len); | |
1476 | if (pos < 0) | |
1477 | return 0; | |
1478 | ce = active_cache[pos]; | |
1479 | if ((lstat(name, &st) < 0) || | |
1480 | !S_ISREG(st.st_mode) || /* careful! */ | |
1481 | ce_match_stat(ce, &st, 0) || | |
a89fccd2 | 1482 | hashcmp(sha1, ce->sha1)) |
6973dcae JH |
1483 | return 0; |
1484 | /* we return 1 only when we can stat, it is a regular file, | |
1485 | * stat information matches, and sha1 recorded in the cache | |
1486 | * matches. I.e. we know the file in the work tree really is | |
1487 | * the same as the <name, sha1> pair. | |
1488 | */ | |
1489 | return 1; | |
1490 | } | |
1491 | ||
3afaa72d JH |
1492 | static int populate_from_stdin(struct diff_filespec *s) |
1493 | { | |
af6eb822 | 1494 | struct strbuf buf; |
c32f749f | 1495 | size_t size = 0; |
af6eb822 | 1496 | |
f1696ee3 PH |
1497 | strbuf_init(&buf, 0); |
1498 | if (strbuf_read(&buf, 0, 0) < 0) | |
af6eb822 | 1499 | return error("error while reading from stdin %s", |
3afaa72d | 1500 | strerror(errno)); |
af6eb822 | 1501 | |
3afaa72d | 1502 | s->should_munmap = 0; |
c32f749f RS |
1503 | s->data = strbuf_detach(&buf, &size); |
1504 | s->size = size; | |
3afaa72d JH |
1505 | s->should_free = 1; |
1506 | return 0; | |
1507 | } | |
1508 | ||
04786756 LT |
1509 | static int diff_populate_gitlink(struct diff_filespec *s, int size_only) |
1510 | { | |
1511 | int len; | |
1512 | char *data = xmalloc(100); | |
1513 | len = snprintf(data, 100, | |
1514 | "Subproject commit %s\n", sha1_to_hex(s->sha1)); | |
1515 | s->data = data; | |
1516 | s->size = len; | |
1517 | s->should_free = 1; | |
1518 | if (size_only) { | |
1519 | s->data = NULL; | |
1520 | free(data); | |
1521 | } | |
1522 | return 0; | |
1523 | } | |
1524 | ||
6973dcae JH |
1525 | /* |
1526 | * While doing rename detection and pickaxe operation, we may need to | |
1527 | * grab the data for the blob (or file) for our own in-core comparison. | |
1528 | * diff_filespec has data and size fields for this purpose. | |
1529 | */ | |
1530 | int diff_populate_filespec(struct diff_filespec *s, int size_only) | |
1531 | { | |
1532 | int err = 0; | |
1533 | if (!DIFF_FILE_VALID(s)) | |
1534 | die("internal error: asking to populate invalid file."); | |
1535 | if (S_ISDIR(s->mode)) | |
1536 | return -1; | |
1537 | ||
6973dcae | 1538 | if (s->data) |
fc3abdf5 | 1539 | return 0; |
04786756 | 1540 | |
6e0b8ed6 JH |
1541 | if (size_only && 0 < s->size) |
1542 | return 0; | |
1543 | ||
302b9282 | 1544 | if (S_ISGITLINK(s->mode)) |
04786756 LT |
1545 | return diff_populate_gitlink(s, size_only); |
1546 | ||
6973dcae | 1547 | if (!s->sha1_valid || |
1510fea7 | 1548 | reuse_worktree_file(s->path, s->sha1, 0)) { |
5ecd293d | 1549 | struct strbuf buf; |
6973dcae JH |
1550 | struct stat st; |
1551 | int fd; | |
6c510bee | 1552 | |
3afaa72d JH |
1553 | if (!strcmp(s->path, "-")) |
1554 | return populate_from_stdin(s); | |
1555 | ||
6973dcae JH |
1556 | if (lstat(s->path, &st) < 0) { |
1557 | if (errno == ENOENT) { | |
1558 | err_empty: | |
1559 | err = -1; | |
1560 | empty: | |
d2543b8e | 1561 | s->data = (char *)""; |
6973dcae JH |
1562 | s->size = 0; |
1563 | return err; | |
1564 | } | |
1565 | } | |
dc49cd76 | 1566 | s->size = xsize_t(st.st_size); |
6973dcae JH |
1567 | if (!s->size) |
1568 | goto empty; | |
1569 | if (size_only) | |
1570 | return 0; | |
1571 | if (S_ISLNK(st.st_mode)) { | |
1572 | int ret; | |
1573 | s->data = xmalloc(s->size); | |
1574 | s->should_free = 1; | |
1575 | ret = readlink(s->path, s->data, s->size); | |
1576 | if (ret < 0) { | |
1577 | free(s->data); | |
1578 | goto err_empty; | |
1579 | } | |
1580 | return 0; | |
1581 | } | |
1582 | fd = open(s->path, O_RDONLY); | |
1583 | if (fd < 0) | |
1584 | goto err_empty; | |
c4712e45 | 1585 | s->data = xmmap(NULL, s->size, PROT_READ, MAP_PRIVATE, fd, 0); |
6973dcae | 1586 | close(fd); |
6973dcae | 1587 | s->should_munmap = 1; |
6c510bee LT |
1588 | |
1589 | /* | |
1590 | * Convert from working tree format to canonical git format | |
1591 | */ | |
5ecd293d PH |
1592 | strbuf_init(&buf, 0); |
1593 | if (convert_to_git(s->path, s->data, s->size, &buf)) { | |
c32f749f | 1594 | size_t size = 0; |
6c510bee LT |
1595 | munmap(s->data, s->size); |
1596 | s->should_munmap = 0; | |
c32f749f RS |
1597 | s->data = strbuf_detach(&buf, &size); |
1598 | s->size = size; | |
6c510bee LT |
1599 | s->should_free = 1; |
1600 | } | |
6973dcae JH |
1601 | } |
1602 | else { | |
21666f1a | 1603 | enum object_type type; |
6e0b8ed6 | 1604 | if (size_only) |
21666f1a | 1605 | type = sha1_object_info(s->sha1, &s->size); |
6973dcae | 1606 | else { |
21666f1a | 1607 | s->data = read_sha1_file(s->sha1, &type, &s->size); |
6973dcae JH |
1608 | s->should_free = 1; |
1609 | } | |
1610 | } | |
1611 | return 0; | |
1612 | } | |
1613 | ||
8ae92e63 | 1614 | void diff_free_filespec_blob(struct diff_filespec *s) |
6973dcae JH |
1615 | { |
1616 | if (s->should_free) | |
1617 | free(s->data); | |
1618 | else if (s->should_munmap) | |
1619 | munmap(s->data, s->size); | |
fc3abdf5 JH |
1620 | |
1621 | if (s->should_free || s->should_munmap) { | |
1622 | s->should_free = s->should_munmap = 0; | |
1623 | s->data = NULL; | |
1624 | } | |
eede7b7d JK |
1625 | } |
1626 | ||
1627 | void diff_free_filespec_data(struct diff_filespec *s) | |
1628 | { | |
8ae92e63 | 1629 | diff_free_filespec_blob(s); |
6973dcae JH |
1630 | free(s->cnt_data); |
1631 | s->cnt_data = NULL; | |
1632 | } | |
1633 | ||
1634 | static void prep_temp_blob(struct diff_tempfile *temp, | |
1635 | void *blob, | |
1636 | unsigned long size, | |
1637 | const unsigned char *sha1, | |
1638 | int mode) | |
1639 | { | |
1640 | int fd; | |
1641 | ||
1472966c | 1642 | fd = git_mkstemp(temp->tmp_path, PATH_MAX, ".diff_XXXXXX"); |
6973dcae | 1643 | if (fd < 0) |
e7a7be88 | 1644 | die("unable to create temp-file: %s", strerror(errno)); |
93822c22 | 1645 | if (write_in_full(fd, blob, size) != size) |
6973dcae JH |
1646 | die("unable to write temp-file"); |
1647 | close(fd); | |
1648 | temp->name = temp->tmp_path; | |
1649 | strcpy(temp->hex, sha1_to_hex(sha1)); | |
1650 | temp->hex[40] = 0; | |
1651 | sprintf(temp->mode, "%06o", mode); | |
1652 | } | |
1653 | ||
1654 | static void prepare_temp_file(const char *name, | |
1655 | struct diff_tempfile *temp, | |
1656 | struct diff_filespec *one) | |
1657 | { | |
1658 | if (!DIFF_FILE_VALID(one)) { | |
1659 | not_a_valid_file: | |
1660 | /* A '-' entry produces this for file-2, and | |
1661 | * a '+' entry produces this for file-1. | |
1662 | */ | |
1663 | temp->name = "/dev/null"; | |
1664 | strcpy(temp->hex, "."); | |
1665 | strcpy(temp->mode, "."); | |
1666 | return; | |
1667 | } | |
1668 | ||
1669 | if (!one->sha1_valid || | |
1510fea7 | 1670 | reuse_worktree_file(name, one->sha1, 1)) { |
6973dcae JH |
1671 | struct stat st; |
1672 | if (lstat(name, &st) < 0) { | |
1673 | if (errno == ENOENT) | |
1674 | goto not_a_valid_file; | |
1675 | die("stat(%s): %s", name, strerror(errno)); | |
1676 | } | |
1677 | if (S_ISLNK(st.st_mode)) { | |
1678 | int ret; | |
1679 | char buf[PATH_MAX + 1]; /* ought to be SYMLINK_MAX */ | |
dc49cd76 | 1680 | size_t sz = xsize_t(st.st_size); |
6973dcae JH |
1681 | if (sizeof(buf) <= st.st_size) |
1682 | die("symlink too long: %s", name); | |
dc49cd76 | 1683 | ret = readlink(name, buf, sz); |
6973dcae JH |
1684 | if (ret < 0) |
1685 | die("readlink(%s)", name); | |
dc49cd76 | 1686 | prep_temp_blob(temp, buf, sz, |
6973dcae JH |
1687 | (one->sha1_valid ? |
1688 | one->sha1 : null_sha1), | |
1689 | (one->sha1_valid ? | |
1690 | one->mode : S_IFLNK)); | |
1691 | } | |
1692 | else { | |
1693 | /* we can borrow from the file in the work tree */ | |
1694 | temp->name = name; | |
1695 | if (!one->sha1_valid) | |
1696 | strcpy(temp->hex, sha1_to_hex(null_sha1)); | |
1697 | else | |
1698 | strcpy(temp->hex, sha1_to_hex(one->sha1)); | |
1699 | /* Even though we may sometimes borrow the | |
1700 | * contents from the work tree, we always want | |
1701 | * one->mode. mode is trustworthy even when | |
1702 | * !(one->sha1_valid), as long as | |
1703 | * DIFF_FILE_VALID(one). | |
1704 | */ | |
1705 | sprintf(temp->mode, "%06o", one->mode); | |
1706 | } | |
1707 | return; | |
1708 | } | |
1709 | else { | |
1710 | if (diff_populate_filespec(one, 0)) | |
1711 | die("cannot read data blob for %s", one->path); | |
1712 | prep_temp_blob(temp, one->data, one->size, | |
1713 | one->sha1, one->mode); | |
1714 | } | |
1715 | } | |
1716 | ||
1717 | static void remove_tempfile(void) | |
1718 | { | |
1719 | int i; | |
1720 | ||
1721 | for (i = 0; i < 2; i++) | |
1722 | if (diff_temp[i].name == diff_temp[i].tmp_path) { | |
1723 | unlink(diff_temp[i].name); | |
1724 | diff_temp[i].name = NULL; | |
1725 | } | |
1726 | } | |
1727 | ||
1728 | static void remove_tempfile_on_signal(int signo) | |
1729 | { | |
1730 | remove_tempfile(); | |
1731 | signal(SIGINT, SIG_DFL); | |
1732 | raise(signo); | |
1733 | } | |
1734 | ||
6973dcae JH |
1735 | /* An external diff command takes: |
1736 | * | |
1737 | * diff-cmd name infile1 infile1-sha1 infile1-mode \ | |
1738 | * infile2 infile2-sha1 infile2-mode [ rename-to ] | |
1739 | * | |
1740 | */ | |
1741 | static void run_external_diff(const char *pgm, | |
1742 | const char *name, | |
1743 | const char *other, | |
1744 | struct diff_filespec *one, | |
1745 | struct diff_filespec *two, | |
1746 | const char *xfrm_msg, | |
1747 | int complete_rewrite) | |
1748 | { | |
1749 | const char *spawn_arg[10]; | |
1750 | struct diff_tempfile *temp = diff_temp; | |
1751 | int retval; | |
1752 | static int atexit_asked = 0; | |
1753 | const char *othername; | |
1754 | const char **arg = &spawn_arg[0]; | |
1755 | ||
1756 | othername = (other? other : name); | |
1757 | if (one && two) { | |
1758 | prepare_temp_file(name, &temp[0], one); | |
1759 | prepare_temp_file(othername, &temp[1], two); | |
1760 | if (! atexit_asked && | |
1761 | (temp[0].name == temp[0].tmp_path || | |
1762 | temp[1].name == temp[1].tmp_path)) { | |
1763 | atexit_asked = 1; | |
1764 | atexit(remove_tempfile); | |
1765 | } | |
1766 | signal(SIGINT, remove_tempfile_on_signal); | |
1767 | } | |
1768 | ||
1769 | if (one && two) { | |
1770 | *arg++ = pgm; | |
1771 | *arg++ = name; | |
1772 | *arg++ = temp[0].name; | |
1773 | *arg++ = temp[0].hex; | |
1774 | *arg++ = temp[0].mode; | |
1775 | *arg++ = temp[1].name; | |
1776 | *arg++ = temp[1].hex; | |
1777 | *arg++ = temp[1].mode; | |
1778 | if (other) { | |
1779 | *arg++ = other; | |
1780 | *arg++ = xfrm_msg; | |
1781 | } | |
1782 | } else { | |
1783 | *arg++ = pgm; | |
1784 | *arg++ = name; | |
1785 | } | |
1786 | *arg = NULL; | |
d5535ec7 JS |
1787 | fflush(NULL); |
1788 | retval = run_command_v_opt(spawn_arg, 0); | |
6973dcae JH |
1789 | remove_tempfile(); |
1790 | if (retval) { | |
1791 | fprintf(stderr, "external diff died, stopping at %s.\n", name); | |
1792 | exit(1); | |
1793 | } | |
1794 | } | |
1795 | ||
f1af60bd JH |
1796 | static const char *external_diff_attr(const char *name) |
1797 | { | |
1798 | struct git_attr_check attr_diff_check; | |
1799 | ||
1800 | setup_diff_attr_check(&attr_diff_check); | |
1801 | if (!git_checkattr(name, 1, &attr_diff_check)) { | |
1802 | const char *value = attr_diff_check.value; | |
1803 | if (!ATTR_TRUE(value) && | |
1804 | !ATTR_FALSE(value) && | |
1805 | !ATTR_UNSET(value)) { | |
1806 | struct ll_diff_driver *drv; | |
1807 | ||
e0e324a4 | 1808 | read_config_if_needed(); |
f1af60bd JH |
1809 | for (drv = user_diff; drv; drv = drv->next) |
1810 | if (!strcmp(drv->name, value)) | |
1811 | return drv->cmd; | |
1812 | } | |
1813 | } | |
1814 | return NULL; | |
1815 | } | |
1816 | ||
6973dcae JH |
1817 | static void run_diff_cmd(const char *pgm, |
1818 | const char *name, | |
1819 | const char *other, | |
1820 | struct diff_filespec *one, | |
1821 | struct diff_filespec *two, | |
1822 | const char *xfrm_msg, | |
051308f6 | 1823 | struct diff_options *o, |
6973dcae JH |
1824 | int complete_rewrite) |
1825 | { | |
8f67f8ae | 1826 | if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL)) |
f1af60bd JH |
1827 | pgm = NULL; |
1828 | else { | |
1829 | const char *cmd = external_diff_attr(name); | |
1830 | if (cmd) | |
1831 | pgm = cmd; | |
1832 | } | |
1833 | ||
6973dcae JH |
1834 | if (pgm) { |
1835 | run_external_diff(pgm, name, other, one, two, xfrm_msg, | |
1836 | complete_rewrite); | |
1837 | return; | |
1838 | } | |
1839 | if (one && two) | |
1840 | builtin_diff(name, other ? other : name, | |
051308f6 | 1841 | one, two, xfrm_msg, o, complete_rewrite); |
6973dcae JH |
1842 | else |
1843 | printf("* Unmerged path %s\n", name); | |
1844 | } | |
1845 | ||
1846 | static void diff_fill_sha1_info(struct diff_filespec *one) | |
1847 | { | |
1848 | if (DIFF_FILE_VALID(one)) { | |
1849 | if (!one->sha1_valid) { | |
1850 | struct stat st; | |
5332b2af JS |
1851 | if (!strcmp(one->path, "-")) { |
1852 | hashcpy(one->sha1, null_sha1); | |
1853 | return; | |
1854 | } | |
6973dcae JH |
1855 | if (lstat(one->path, &st) < 0) |
1856 | die("stat %s", one->path); | |
1857 | if (index_path(one->sha1, one->path, &st, 0)) | |
1858 | die("cannot hash %s\n", one->path); | |
1859 | } | |
1860 | } | |
1861 | else | |
e702496e | 1862 | hashclr(one->sha1); |
6973dcae JH |
1863 | } |
1864 | ||
125b7630 RS |
1865 | static int similarity_index(struct diff_filepair *p) |
1866 | { | |
1867 | return p->score * 100 / MAX_SCORE; | |
1868 | } | |
1869 | ||
6973dcae JH |
1870 | static void run_diff(struct diff_filepair *p, struct diff_options *o) |
1871 | { | |
1872 | const char *pgm = external_diff(); | |
663af342 PH |
1873 | struct strbuf msg; |
1874 | char *xfrm_msg; | |
1875 | struct diff_filespec *one = p->one; | |
1876 | struct diff_filespec *two = p->two; | |
6973dcae JH |
1877 | const char *name; |
1878 | const char *other; | |
6973dcae | 1879 | int complete_rewrite = 0; |
663af342 | 1880 | |
6973dcae JH |
1881 | |
1882 | if (DIFF_PAIR_UNMERGED(p)) { | |
051308f6 | 1883 | run_diff_cmd(pgm, p->one->path, NULL, NULL, NULL, NULL, o, 0); |
6973dcae JH |
1884 | return; |
1885 | } | |
1886 | ||
663af342 | 1887 | name = p->one->path; |
6973dcae | 1888 | other = (strcmp(name, p->two->path) ? p->two->path : NULL); |
6973dcae JH |
1889 | diff_fill_sha1_info(one); |
1890 | diff_fill_sha1_info(two); | |
1891 | ||
663af342 | 1892 | strbuf_init(&msg, PATH_MAX * 2 + 300); |
6973dcae JH |
1893 | switch (p->status) { |
1894 | case DIFF_STATUS_COPIED: | |
663af342 PH |
1895 | strbuf_addf(&msg, "similarity index %d%%", similarity_index(p)); |
1896 | strbuf_addstr(&msg, "\ncopy from "); | |
1897 | quote_c_style(name, &msg, NULL, 0); | |
1898 | strbuf_addstr(&msg, "\ncopy to "); | |
1899 | quote_c_style(other, &msg, NULL, 0); | |
1900 | strbuf_addch(&msg, '\n'); | |
6973dcae JH |
1901 | break; |
1902 | case DIFF_STATUS_RENAMED: | |
663af342 PH |
1903 | strbuf_addf(&msg, "similarity index %d%%", similarity_index(p)); |
1904 | strbuf_addstr(&msg, "\nrename from "); | |
1905 | quote_c_style(name, &msg, NULL, 0); | |
1906 | strbuf_addstr(&msg, "\nrename to "); | |
1907 | quote_c_style(other, &msg, NULL, 0); | |
1908 | strbuf_addch(&msg, '\n'); | |
6973dcae JH |
1909 | break; |
1910 | case DIFF_STATUS_MODIFIED: | |
1911 | if (p->score) { | |
663af342 | 1912 | strbuf_addf(&msg, "dissimilarity index %d%%\n", |
125b7630 | 1913 | similarity_index(p)); |
6973dcae JH |
1914 | complete_rewrite = 1; |
1915 | break; | |
1916 | } | |
1917 | /* fallthru */ | |
1918 | default: | |
1919 | /* nothing */ | |
1920 | ; | |
1921 | } | |
1922 | ||
a89fccd2 | 1923 | if (hashcmp(one->sha1, two->sha1)) { |
8f67f8ae | 1924 | int abbrev = DIFF_OPT_TST(o, FULL_INDEX) ? 40 : DEFAULT_ABBREV; |
6973dcae | 1925 | |
8f67f8ae | 1926 | if (DIFF_OPT_TST(o, BINARY)) { |
82793c55 | 1927 | mmfile_t mf; |
29a3eefd JH |
1928 | if ((!fill_mmfile(&mf, one) && diff_filespec_is_binary(one)) || |
1929 | (!fill_mmfile(&mf, two) && diff_filespec_is_binary(two))) | |
82793c55 JH |
1930 | abbrev = 40; |
1931 | } | |
663af342 | 1932 | strbuf_addf(&msg, "index %.*s..%.*s", |
dcb3450f LT |
1933 | abbrev, sha1_to_hex(one->sha1), |
1934 | abbrev, sha1_to_hex(two->sha1)); | |
6973dcae | 1935 | if (one->mode == two->mode) |
663af342 PH |
1936 | strbuf_addf(&msg, " %06o", one->mode); |
1937 | strbuf_addch(&msg, '\n'); | |
6973dcae JH |
1938 | } |
1939 | ||
663af342 PH |
1940 | if (msg.len) |
1941 | strbuf_setlen(&msg, msg.len - 1); | |
1942 | xfrm_msg = msg.len ? msg.buf : NULL; | |
6973dcae JH |
1943 | |
1944 | if (!pgm && | |
1945 | DIFF_FILE_VALID(one) && DIFF_FILE_VALID(two) && | |
1946 | (S_IFMT & one->mode) != (S_IFMT & two->mode)) { | |
1947 | /* a filepair that changes between file and symlink | |
1948 | * needs to be split into deletion and creation. | |
1949 | */ | |
1950 | struct diff_filespec *null = alloc_filespec(two->path); | |
051308f6 | 1951 | run_diff_cmd(NULL, name, other, one, null, xfrm_msg, o, 0); |
6973dcae JH |
1952 | free(null); |
1953 | null = alloc_filespec(one->path); | |
051308f6 | 1954 | run_diff_cmd(NULL, name, other, null, two, xfrm_msg, o, 0); |
6973dcae JH |
1955 | free(null); |
1956 | } | |
1957 | else | |
051308f6 | 1958 | run_diff_cmd(pgm, name, other, one, two, xfrm_msg, o, |
6973dcae JH |
1959 | complete_rewrite); |
1960 | ||
663af342 | 1961 | strbuf_release(&msg); |
6973dcae JH |
1962 | } |
1963 | ||
1964 | static void run_diffstat(struct diff_filepair *p, struct diff_options *o, | |
1965 | struct diffstat_t *diffstat) | |
1966 | { | |
1967 | const char *name; | |
1968 | const char *other; | |
710158e3 | 1969 | int complete_rewrite = 0; |
6973dcae JH |
1970 | |
1971 | if (DIFF_PAIR_UNMERGED(p)) { | |
1972 | /* unmerged */ | |
0d21efa5 | 1973 | builtin_diffstat(p->one->path, NULL, NULL, NULL, diffstat, o, 0); |
6973dcae JH |
1974 | return; |
1975 | } | |
1976 | ||
1977 | name = p->one->path; | |
1978 | other = (strcmp(name, p->two->path) ? p->two->path : NULL); | |
1979 | ||
1980 | diff_fill_sha1_info(p->one); | |
1981 | diff_fill_sha1_info(p->two); | |
1982 | ||
710158e3 JH |
1983 | if (p->status == DIFF_STATUS_MODIFIED && p->score) |
1984 | complete_rewrite = 1; | |
0d21efa5 | 1985 | builtin_diffstat(name, other, p->one, p->two, diffstat, o, complete_rewrite); |
6973dcae JH |
1986 | } |
1987 | ||
88246898 JS |
1988 | static void run_checkdiff(struct diff_filepair *p, struct diff_options *o) |
1989 | { | |
1990 | const char *name; | |
1991 | const char *other; | |
1992 | ||
1993 | if (DIFF_PAIR_UNMERGED(p)) { | |
1994 | /* unmerged */ | |
1995 | return; | |
1996 | } | |
1997 | ||
1998 | name = p->one->path; | |
1999 | other = (strcmp(name, p->two->path) ? p->two->path : NULL); | |
2000 | ||
2001 | diff_fill_sha1_info(p->one); | |
2002 | diff_fill_sha1_info(p->two); | |
2003 | ||
c5a8c3ec | 2004 | builtin_checkdiff(name, other, p->one, p->two, o); |
88246898 JS |
2005 | } |
2006 | ||
6973dcae JH |
2007 | void diff_setup(struct diff_options *options) |
2008 | { | |
2009 | memset(options, 0, sizeof(*options)); | |
6973dcae JH |
2010 | options->line_termination = '\n'; |
2011 | options->break_opt = -1; | |
2012 | options->rename_limit = -1; | |
ee1e5412 | 2013 | options->context = 3; |
3969cf7d | 2014 | options->msg_sep = ""; |
6973dcae JH |
2015 | |
2016 | options->change = diff_change; | |
2017 | options->add_remove = diff_addremove; | |
8f67f8ae PH |
2018 | if (diff_use_color_default) |
2019 | DIFF_OPT_SET(options, COLOR_DIFF); | |
2020 | else | |
2021 | DIFF_OPT_CLR(options, COLOR_DIFF); | |
b68ea12e | 2022 | options->detect_rename = diff_detect_rename_default; |
6973dcae JH |
2023 | } |
2024 | ||
2025 | int diff_setup_done(struct diff_options *options) | |
2026 | { | |
d7de00f7 TH |
2027 | int count = 0; |
2028 | ||
2029 | if (options->output_format & DIFF_FORMAT_NAME) | |
2030 | count++; | |
2031 | if (options->output_format & DIFF_FORMAT_NAME_STATUS) | |
2032 | count++; | |
2033 | if (options->output_format & DIFF_FORMAT_CHECKDIFF) | |
2034 | count++; | |
2035 | if (options->output_format & DIFF_FORMAT_NO_OUTPUT) | |
2036 | count++; | |
2037 | if (count > 1) | |
2038 | die("--name-only, --name-status, --check and -s are mutually exclusive"); | |
2039 | ||
8f67f8ae | 2040 | if (DIFF_OPT_TST(options, FIND_COPIES_HARDER)) |
03b9d560 JH |
2041 | options->detect_rename = DIFF_DETECT_COPY; |
2042 | ||
c6744349 TH |
2043 | if (options->output_format & (DIFF_FORMAT_NAME | |
2044 | DIFF_FORMAT_NAME_STATUS | | |
2045 | DIFF_FORMAT_CHECKDIFF | | |
2046 | DIFF_FORMAT_NO_OUTPUT)) | |
2047 | options->output_format &= ~(DIFF_FORMAT_RAW | | |
74e2abe5 | 2048 | DIFF_FORMAT_NUMSTAT | |
c6744349 | 2049 | DIFF_FORMAT_DIFFSTAT | |
ebd124c6 | 2050 | DIFF_FORMAT_SHORTSTAT | |
c6744349 TH |
2051 | DIFF_FORMAT_SUMMARY | |
2052 | DIFF_FORMAT_PATCH); | |
2053 | ||
6973dcae JH |
2054 | /* |
2055 | * These cases always need recursive; we do not drop caller-supplied | |
2056 | * recursive bits for other formats here. | |
2057 | */ | |
c6744349 | 2058 | if (options->output_format & (DIFF_FORMAT_PATCH | |
74e2abe5 | 2059 | DIFF_FORMAT_NUMSTAT | |
c6744349 | 2060 | DIFF_FORMAT_DIFFSTAT | |
ebd124c6 | 2061 | DIFF_FORMAT_SHORTSTAT | |
d7014dc0 | 2062 | DIFF_FORMAT_SUMMARY | |
c6744349 | 2063 | DIFF_FORMAT_CHECKDIFF)) |
8f67f8ae | 2064 | DIFF_OPT_SET(options, RECURSIVE); |
5e363541 | 2065 | /* |
3969cf7d | 2066 | * Also pickaxe would not work very well if you do not say recursive |
5e363541 | 2067 | */ |
3969cf7d | 2068 | if (options->pickaxe) |
8f67f8ae | 2069 | DIFF_OPT_SET(options, RECURSIVE); |
5e363541 | 2070 | |
6973dcae JH |
2071 | if (options->detect_rename && options->rename_limit < 0) |
2072 | options->rename_limit = diff_rename_limit_default; | |
2073 | if (options->setup & DIFF_SETUP_USE_CACHE) { | |
2074 | if (!active_cache) | |
2075 | /* read-cache does not die even when it fails | |
2076 | * so it is safe for us to do this here. Also | |
2077 | * it does not smudge active_cache or active_nr | |
2078 | * when it fails, so we do not have to worry about | |
2079 | * cleaning it up ourselves either. | |
2080 | */ | |
2081 | read_cache(); | |
2082 | } | |
6973dcae JH |
2083 | if (options->abbrev <= 0 || 40 < options->abbrev) |
2084 | options->abbrev = 40; /* full */ | |
2085 | ||
68aacb2f JH |
2086 | /* |
2087 | * It does not make sense to show the first hit we happened | |
2088 | * to have found. It does not make sense not to return with | |
2089 | * exit code in such a case either. | |
2090 | */ | |
8f67f8ae | 2091 | if (DIFF_OPT_TST(options, QUIET)) { |
68aacb2f | 2092 | options->output_format = DIFF_FORMAT_NO_OUTPUT; |
8f67f8ae | 2093 | DIFF_OPT_SET(options, EXIT_WITH_STATUS); |
68aacb2f JH |
2094 | } |
2095 | ||
2096 | /* | |
2097 | * If we postprocess in diffcore, we cannot simply return | |
2098 | * upon the first hit. We need to run diff as usual. | |
2099 | */ | |
2100 | if (options->pickaxe || options->filter) | |
8f67f8ae | 2101 | DIFF_OPT_CLR(options, QUIET); |
68aacb2f | 2102 | |
6973dcae JH |
2103 | return 0; |
2104 | } | |
2105 | ||
d2543b8e | 2106 | static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *val) |
ee1e5412 LT |
2107 | { |
2108 | char c, *eq; | |
2109 | int len; | |
2110 | ||
2111 | if (*arg != '-') | |
2112 | return 0; | |
2113 | c = *++arg; | |
2114 | if (!c) | |
2115 | return 0; | |
2116 | if (c == arg_short) { | |
2117 | c = *++arg; | |
2118 | if (!c) | |
2119 | return 1; | |
2120 | if (val && isdigit(c)) { | |
2121 | char *end; | |
2122 | int n = strtoul(arg, &end, 10); | |
2123 | if (*end) | |
2124 | return 0; | |
2125 | *val = n; | |
2126 | return 1; | |
2127 | } | |
2128 | return 0; | |
2129 | } | |
2130 | if (c != '-') | |
2131 | return 0; | |
2132 | arg++; | |
2133 | eq = strchr(arg, '='); | |
2134 | if (eq) | |
2135 | len = eq - arg; | |
2136 | else | |
2137 | len = strlen(arg); | |
2138 | if (!len || strncmp(arg, arg_long, len)) | |
2139 | return 0; | |
2140 | if (eq) { | |
2141 | int n; | |
2142 | char *end; | |
2143 | if (!isdigit(*++eq)) | |
2144 | return 0; | |
2145 | n = strtoul(eq, &end, 10); | |
2146 | if (*end) | |
2147 | return 0; | |
2148 | *val = n; | |
2149 | } | |
2150 | return 1; | |
2151 | } | |
2152 | ||
16befb8b JH |
2153 | static int diff_scoreopt_parse(const char *opt); |
2154 | ||
6973dcae JH |
2155 | int diff_opt_parse(struct diff_options *options, const char **av, int ac) |
2156 | { | |
2157 | const char *arg = av[0]; | |
d054680c PH |
2158 | |
2159 | /* Output format options */ | |
6973dcae | 2160 | if (!strcmp(arg, "-p") || !strcmp(arg, "-u")) |
c6744349 | 2161 | options->output_format |= DIFF_FORMAT_PATCH; |
ee1e5412 | 2162 | else if (opt_arg(arg, 'U', "unified", &options->context)) |
c6744349 | 2163 | options->output_format |= DIFF_FORMAT_PATCH; |
a610786f TH |
2164 | else if (!strcmp(arg, "--raw")) |
2165 | options->output_format |= DIFF_FORMAT_RAW; | |
8f67f8ae | 2166 | else if (!strcmp(arg, "--patch-with-raw")) |
c6744349 | 2167 | options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW; |
8f67f8ae | 2168 | else if (!strcmp(arg, "--numstat")) |
74e2abe5 | 2169 | options->output_format |= DIFF_FORMAT_NUMSTAT; |
8f67f8ae | 2170 | else if (!strcmp(arg, "--shortstat")) |
ebd124c6 | 2171 | options->output_format |= DIFF_FORMAT_SHORTSTAT; |
d054680c PH |
2172 | else if (!strcmp(arg, "--check")) |
2173 | options->output_format |= DIFF_FORMAT_CHECKDIFF; | |
2174 | else if (!strcmp(arg, "--summary")) | |
2175 | options->output_format |= DIFF_FORMAT_SUMMARY; | |
2176 | else if (!strcmp(arg, "--patch-with-stat")) | |
2177 | options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT; | |
2178 | else if (!strcmp(arg, "--name-only")) | |
2179 | options->output_format |= DIFF_FORMAT_NAME; | |
2180 | else if (!strcmp(arg, "--name-status")) | |
2181 | options->output_format |= DIFF_FORMAT_NAME_STATUS; | |
2182 | else if (!strcmp(arg, "-s")) | |
2183 | options->output_format |= DIFF_FORMAT_NO_OUTPUT; | |
cc44c765 | 2184 | else if (!prefixcmp(arg, "--stat")) { |
5c5b2ea9 LT |
2185 | char *end; |
2186 | int width = options->stat_width; | |
2187 | int name_width = options->stat_name_width; | |
2188 | arg += 6; | |
2189 | end = (char *)arg; | |
2190 | ||
2191 | switch (*arg) { | |
2192 | case '-': | |
cc44c765 | 2193 | if (!prefixcmp(arg, "-width=")) |
5c5b2ea9 | 2194 | width = strtoul(arg + 7, &end, 10); |
cc44c765 | 2195 | else if (!prefixcmp(arg, "-name-width=")) |
5c5b2ea9 LT |
2196 | name_width = strtoul(arg + 12, &end, 10); |
2197 | break; | |
2198 | case '=': | |
2199 | width = strtoul(arg+1, &end, 10); | |
2200 | if (*end == ',') | |
2201 | name_width = strtoul(end+1, &end, 10); | |
2202 | } | |
2203 | ||
2204 | /* Important! This checks all the error cases! */ | |
2205 | if (*end) | |
2206 | return 0; | |
c6744349 | 2207 | options->output_format |= DIFF_FORMAT_DIFFSTAT; |
5c5b2ea9 LT |
2208 | options->stat_name_width = name_width; |
2209 | options->stat_width = width; | |
a2540023 | 2210 | } |
d054680c PH |
2211 | |
2212 | /* renames options */ | |
cc44c765 | 2213 | else if (!prefixcmp(arg, "-B")) { |
8f67f8ae | 2214 | if ((options->break_opt = diff_scoreopt_parse(arg)) == -1) |
6973dcae JH |
2215 | return -1; |
2216 | } | |
cc44c765 | 2217 | else if (!prefixcmp(arg, "-M")) { |
8f67f8ae | 2218 | if ((options->rename_score = diff_scoreopt_parse(arg)) == -1) |
6973dcae JH |
2219 | return -1; |
2220 | options->detect_rename = DIFF_DETECT_RENAME; | |
2221 | } | |
cc44c765 | 2222 | else if (!prefixcmp(arg, "-C")) { |
ca6c0970 | 2223 | if (options->detect_rename == DIFF_DETECT_COPY) |
8f67f8ae PH |
2224 | DIFF_OPT_SET(options, FIND_COPIES_HARDER); |
2225 | if ((options->rename_score = diff_scoreopt_parse(arg)) == -1) | |
6973dcae JH |
2226 | return -1; |
2227 | options->detect_rename = DIFF_DETECT_COPY; | |
2228 | } | |
d054680c PH |
2229 | else if (!strcmp(arg, "--no-renames")) |
2230 | options->detect_rename = 0; | |
2231 | ||
2232 | /* xdiff options */ | |
2233 | else if (!strcmp(arg, "-w") || !strcmp(arg, "--ignore-all-space")) | |
2234 | options->xdl_opts |= XDF_IGNORE_WHITESPACE; | |
2235 | else if (!strcmp(arg, "-b") || !strcmp(arg, "--ignore-space-change")) | |
2236 | options->xdl_opts |= XDF_IGNORE_WHITESPACE_CHANGE; | |
2237 | else if (!strcmp(arg, "--ignore-space-at-eol")) | |
2238 | options->xdl_opts |= XDF_IGNORE_WHITESPACE_AT_EOL; | |
2239 | ||
2240 | /* flags options */ | |
2241 | else if (!strcmp(arg, "--binary")) { | |
2242 | options->output_format |= DIFF_FORMAT_PATCH; | |
2243 | DIFF_OPT_SET(options, BINARY); | |
2244 | } | |
2245 | else if (!strcmp(arg, "--full-index")) | |
2246 | DIFF_OPT_SET(options, FULL_INDEX); | |
2247 | else if (!strcmp(arg, "-a") || !strcmp(arg, "--text")) | |
2248 | DIFF_OPT_SET(options, TEXT); | |
2249 | else if (!strcmp(arg, "-R")) | |
2250 | DIFF_OPT_SET(options, REVERSE_DIFF); | |
6973dcae | 2251 | else if (!strcmp(arg, "--find-copies-harder")) |
8f67f8ae | 2252 | DIFF_OPT_SET(options, FIND_COPIES_HARDER); |
750f7b66 | 2253 | else if (!strcmp(arg, "--follow")) |
8f67f8ae | 2254 | DIFF_OPT_SET(options, FOLLOW_RENAMES); |
cd112cef | 2255 | else if (!strcmp(arg, "--color")) |
8f67f8ae | 2256 | DIFF_OPT_SET(options, COLOR_DIFF); |
fef88bb0 | 2257 | else if (!strcmp(arg, "--no-color")) |
8f67f8ae | 2258 | DIFF_OPT_CLR(options, COLOR_DIFF); |
f59a59e2 | 2259 | else if (!strcmp(arg, "--color-words")) |
8f67f8ae | 2260 | options->flags |= DIFF_OPT_COLOR_DIFF | DIFF_OPT_COLOR_DIFF_WORDS; |
41bbf9d5 | 2261 | else if (!strcmp(arg, "--exit-code")) |
8f67f8ae | 2262 | DIFF_OPT_SET(options, EXIT_WITH_STATUS); |
68aacb2f | 2263 | else if (!strcmp(arg, "--quiet")) |
8f67f8ae | 2264 | DIFF_OPT_SET(options, QUIET); |
72909bef | 2265 | else if (!strcmp(arg, "--ext-diff")) |
8f67f8ae | 2266 | DIFF_OPT_SET(options, ALLOW_EXTERNAL); |
72909bef | 2267 | else if (!strcmp(arg, "--no-ext-diff")) |
8f67f8ae | 2268 | DIFF_OPT_CLR(options, ALLOW_EXTERNAL); |
d054680c PH |
2269 | |
2270 | /* misc options */ | |
2271 | else if (!strcmp(arg, "-z")) | |
2272 | options->line_termination = 0; | |
2273 | else if (!prefixcmp(arg, "-l")) | |
2274 | options->rename_limit = strtoul(arg+2, NULL, 10); | |
2275 | else if (!prefixcmp(arg, "-S")) | |
2276 | options->pickaxe = arg + 2; | |
2277 | else if (!strcmp(arg, "--pickaxe-all")) | |
2278 | options->pickaxe_opts = DIFF_PICKAXE_ALL; | |
2279 | else if (!strcmp(arg, "--pickaxe-regex")) | |
2280 | options->pickaxe_opts = DIFF_PICKAXE_REGEX; | |
2281 | else if (!prefixcmp(arg, "-O")) | |
2282 | options->orderfile = arg + 2; | |
2283 | else if (!prefixcmp(arg, "--diff-filter=")) | |
2284 | options->filter = arg + 14; | |
2285 | else if (!strcmp(arg, "--abbrev")) | |
2286 | options->abbrev = DEFAULT_ABBREV; | |
2287 | else if (!prefixcmp(arg, "--abbrev=")) { | |
2288 | options->abbrev = strtoul(arg + 9, NULL, 10); | |
2289 | if (options->abbrev < MINIMUM_ABBREV) | |
2290 | options->abbrev = MINIMUM_ABBREV; | |
2291 | else if (40 < options->abbrev) | |
2292 | options->abbrev = 40; | |
2293 | } | |
6973dcae JH |
2294 | else |
2295 | return 0; | |
2296 | return 1; | |
2297 | } | |
2298 | ||
2299 | static int parse_num(const char **cp_p) | |
2300 | { | |
2301 | unsigned long num, scale; | |
2302 | int ch, dot; | |
2303 | const char *cp = *cp_p; | |
2304 | ||
2305 | num = 0; | |
2306 | scale = 1; | |
2307 | dot = 0; | |
2308 | for(;;) { | |
2309 | ch = *cp; | |
2310 | if ( !dot && ch == '.' ) { | |
2311 | scale = 1; | |
2312 | dot = 1; | |
2313 | } else if ( ch == '%' ) { | |
2314 | scale = dot ? scale*100 : 100; | |
2315 | cp++; /* % is always at the end */ | |
2316 | break; | |
2317 | } else if ( ch >= '0' && ch <= '9' ) { | |
2318 | if ( scale < 100000 ) { | |
2319 | scale *= 10; | |
2320 | num = (num*10) + (ch-'0'); | |
2321 | } | |
2322 | } else { | |
2323 | break; | |
2324 | } | |
2325 | cp++; | |
2326 | } | |
2327 | *cp_p = cp; | |
2328 | ||
2329 | /* user says num divided by scale and we say internally that | |
2330 | * is MAX_SCORE * num / scale. | |
2331 | */ | |
dc49cd76 | 2332 | return (int)((num >= scale) ? MAX_SCORE : (MAX_SCORE * num / scale)); |
6973dcae JH |
2333 | } |
2334 | ||
16befb8b | 2335 | static int diff_scoreopt_parse(const char *opt) |
6973dcae JH |
2336 | { |
2337 | int opt1, opt2, cmd; | |
2338 | ||
2339 | if (*opt++ != '-') | |
2340 | return -1; | |
2341 | cmd = *opt++; | |
2342 | if (cmd != 'M' && cmd != 'C' && cmd != 'B') | |
2343 | return -1; /* that is not a -M, -C nor -B option */ | |
2344 | ||
2345 | opt1 = parse_num(&opt); | |
2346 | if (cmd != 'B') | |
2347 | opt2 = 0; | |
2348 | else { | |
2349 | if (*opt == 0) | |
2350 | opt2 = 0; | |
2351 | else if (*opt != '/') | |
2352 | return -1; /* we expect -B80/99 or -B80 */ | |
2353 | else { | |
2354 | opt++; | |
2355 | opt2 = parse_num(&opt); | |
2356 | } | |
2357 | } | |
2358 | if (*opt != 0) | |
2359 | return -1; | |
2360 | return opt1 | (opt2 << 16); | |
2361 | } | |
2362 | ||
2363 | struct diff_queue_struct diff_queued_diff; | |
2364 | ||
2365 | void diff_q(struct diff_queue_struct *queue, struct diff_filepair *dp) | |
2366 | { | |
2367 | if (queue->alloc <= queue->nr) { | |
2368 | queue->alloc = alloc_nr(queue->alloc); | |
2369 | queue->queue = xrealloc(queue->queue, | |
2370 | sizeof(dp) * queue->alloc); | |
2371 | } | |
2372 | queue->queue[queue->nr++] = dp; | |
2373 | } | |
2374 | ||
2375 | struct diff_filepair *diff_queue(struct diff_queue_struct *queue, | |
2376 | struct diff_filespec *one, | |
2377 | struct diff_filespec *two) | |
2378 | { | |
ef677686 | 2379 | struct diff_filepair *dp = xcalloc(1, sizeof(*dp)); |
6973dcae JH |
2380 | dp->one = one; |
2381 | dp->two = two; | |
6973dcae JH |
2382 | if (queue) |
2383 | diff_q(queue, dp); | |
2384 | return dp; | |
2385 | } | |
2386 | ||
2387 | void diff_free_filepair(struct diff_filepair *p) | |
2388 | { | |
9fb88419 LT |
2389 | free_filespec(p->one); |
2390 | free_filespec(p->two); | |
6973dcae JH |
2391 | free(p); |
2392 | } | |
2393 | ||
2394 | /* This is different from find_unique_abbrev() in that | |
2395 | * it stuffs the result with dots for alignment. | |
2396 | */ | |
2397 | const char *diff_unique_abbrev(const unsigned char *sha1, int len) | |
2398 | { | |
2399 | int abblen; | |
2400 | const char *abbrev; | |
2401 | if (len == 40) | |
2402 | return sha1_to_hex(sha1); | |
2403 | ||
2404 | abbrev = find_unique_abbrev(sha1, len); | |
2405 | if (!abbrev) | |
2406 | return sha1_to_hex(sha1); | |
2407 | abblen = strlen(abbrev); | |
2408 | if (abblen < 37) { | |
2409 | static char hex[41]; | |
2410 | if (len < abblen && abblen <= len + 2) | |
2411 | sprintf(hex, "%s%.*s", abbrev, len+3-abblen, ".."); | |
2412 | else | |
2413 | sprintf(hex, "%s...", abbrev); | |
2414 | return hex; | |
2415 | } | |
2416 | return sha1_to_hex(sha1); | |
2417 | } | |
2418 | ||
663af342 | 2419 | static void diff_flush_raw(struct diff_filepair *p, struct diff_options *opt) |
6973dcae | 2420 | { |
663af342 PH |
2421 | int line_termination = opt->line_termination; |
2422 | int inter_name_termination = line_termination ? '\t' : '\0'; | |
6973dcae | 2423 | |
663af342 PH |
2424 | if (!(opt->output_format & DIFF_FORMAT_NAME_STATUS)) { |
2425 | printf(":%06o %06o %s ", p->one->mode, p->two->mode, | |
2426 | diff_unique_abbrev(p->one->sha1, opt->abbrev)); | |
2427 | printf("%s ", diff_unique_abbrev(p->two->sha1, opt->abbrev)); | |
6973dcae | 2428 | } |
663af342 PH |
2429 | if (p->score) { |
2430 | printf("%c%03d%c", p->status, similarity_index(p), | |
2431 | inter_name_termination); | |
2432 | } else { | |
2433 | printf("%c%c", p->status, inter_name_termination); | |
6973dcae | 2434 | } |
6973dcae | 2435 | |
663af342 PH |
2436 | if (p->status == DIFF_STATUS_COPIED || p->status == DIFF_STATUS_RENAMED) { |
2437 | write_name_quoted(p->one->path, stdout, inter_name_termination); | |
2438 | write_name_quoted(p->two->path, stdout, line_termination); | |
2439 | } else { | |
2440 | const char *path = p->one->mode ? p->one->path : p->two->path; | |
2441 | write_name_quoted(path, stdout, line_termination); | |
2442 | } | |
6973dcae JH |
2443 | } |
2444 | ||
2445 | int diff_unmodified_pair(struct diff_filepair *p) | |
2446 | { | |
2447 | /* This function is written stricter than necessary to support | |
2448 | * the currently implemented transformers, but the idea is to | |
2449 | * let transformers to produce diff_filepairs any way they want, | |
2450 | * and filter and clean them up here before producing the output. | |
2451 | */ | |
663af342 | 2452 | struct diff_filespec *one = p->one, *two = p->two; |
6973dcae JH |
2453 | |
2454 | if (DIFF_PAIR_UNMERGED(p)) | |
2455 | return 0; /* unmerged is interesting */ | |
2456 | ||
6973dcae JH |
2457 | /* deletion, addition, mode or type change |
2458 | * and rename are all interesting. | |
2459 | */ | |
2460 | if (DIFF_FILE_VALID(one) != DIFF_FILE_VALID(two) || | |
2461 | DIFF_PAIR_MODE_CHANGED(p) || | |
2462 | strcmp(one->path, two->path)) | |
2463 | return 0; | |
2464 | ||
2465 | /* both are valid and point at the same path. that is, we are | |
2466 | * dealing with a change. | |
2467 | */ | |
2468 | if (one->sha1_valid && two->sha1_valid && | |
a89fccd2 | 2469 | !hashcmp(one->sha1, two->sha1)) |
6973dcae JH |
2470 | return 1; /* no change */ |
2471 | if (!one->sha1_valid && !two->sha1_valid) | |
2472 | return 1; /* both look at the same file on the filesystem. */ | |
2473 | return 0; | |
2474 | } | |
2475 | ||
2476 | static void diff_flush_patch(struct diff_filepair *p, struct diff_options *o) | |
2477 | { | |
2478 | if (diff_unmodified_pair(p)) | |
2479 | return; | |
2480 | ||
2481 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || | |
2482 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
2483 | return; /* no tree diffs in patch format */ | |
2484 | ||
2485 | run_diff(p, o); | |
2486 | } | |
2487 | ||
2488 | static void diff_flush_stat(struct diff_filepair *p, struct diff_options *o, | |
2489 | struct diffstat_t *diffstat) | |
2490 | { | |
2491 | if (diff_unmodified_pair(p)) | |
2492 | return; | |
2493 | ||
2494 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || | |
2495 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
2496 | return; /* no tree diffs in patch format */ | |
2497 | ||
2498 | run_diffstat(p, o, diffstat); | |
2499 | } | |
2500 | ||
88246898 JS |
2501 | static void diff_flush_checkdiff(struct diff_filepair *p, |
2502 | struct diff_options *o) | |
2503 | { | |
2504 | if (diff_unmodified_pair(p)) | |
2505 | return; | |
2506 | ||
2507 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || | |
2508 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
2509 | return; /* no tree diffs in patch format */ | |
2510 | ||
2511 | run_checkdiff(p, o); | |
2512 | } | |
2513 | ||
6973dcae JH |
2514 | int diff_queue_is_empty(void) |
2515 | { | |
2516 | struct diff_queue_struct *q = &diff_queued_diff; | |
2517 | int i; | |
2518 | for (i = 0; i < q->nr; i++) | |
2519 | if (!diff_unmodified_pair(q->queue[i])) | |
2520 | return 0; | |
2521 | return 1; | |
2522 | } | |
2523 | ||
2524 | #if DIFF_DEBUG | |
2525 | void diff_debug_filespec(struct diff_filespec *s, int x, const char *one) | |
2526 | { | |
2527 | fprintf(stderr, "queue[%d] %s (%s) %s %06o %s\n", | |
2528 | x, one ? one : "", | |
2529 | s->path, | |
2530 | DIFF_FILE_VALID(s) ? "valid" : "invalid", | |
2531 | s->mode, | |
2532 | s->sha1_valid ? sha1_to_hex(s->sha1) : ""); | |
2533 | fprintf(stderr, "queue[%d] %s size %lu flags %d\n", | |
2534 | x, one ? one : "", | |
2535 | s->size, s->xfrm_flags); | |
2536 | } | |
2537 | ||
2538 | void diff_debug_filepair(const struct diff_filepair *p, int i) | |
2539 | { | |
2540 | diff_debug_filespec(p->one, i, "one"); | |
2541 | diff_debug_filespec(p->two, i, "two"); | |
64479711 | 2542 | fprintf(stderr, "score %d, status %c rename_used %d broken %d\n", |
6973dcae | 2543 | p->score, p->status ? p->status : '?', |
64479711 | 2544 | p->one->rename_used, p->broken_pair); |
6973dcae JH |
2545 | } |
2546 | ||
2547 | void diff_debug_queue(const char *msg, struct diff_queue_struct *q) | |
2548 | { | |
2549 | int i; | |
2550 | if (msg) | |
2551 | fprintf(stderr, "%s\n", msg); | |
2552 | fprintf(stderr, "q->nr = %d\n", q->nr); | |
2553 | for (i = 0; i < q->nr; i++) { | |
2554 | struct diff_filepair *p = q->queue[i]; | |
2555 | diff_debug_filepair(p, i); | |
2556 | } | |
2557 | } | |
2558 | #endif | |
2559 | ||
2560 | static void diff_resolve_rename_copy(void) | |
2561 | { | |
64479711 LT |
2562 | int i; |
2563 | struct diff_filepair *p; | |
6973dcae JH |
2564 | struct diff_queue_struct *q = &diff_queued_diff; |
2565 | ||
2566 | diff_debug_queue("resolve-rename-copy", q); | |
2567 | ||
2568 | for (i = 0; i < q->nr; i++) { | |
2569 | p = q->queue[i]; | |
2570 | p->status = 0; /* undecided */ | |
2571 | if (DIFF_PAIR_UNMERGED(p)) | |
2572 | p->status = DIFF_STATUS_UNMERGED; | |
2573 | else if (!DIFF_FILE_VALID(p->one)) | |
2574 | p->status = DIFF_STATUS_ADDED; | |
2575 | else if (!DIFF_FILE_VALID(p->two)) | |
2576 | p->status = DIFF_STATUS_DELETED; | |
2577 | else if (DIFF_PAIR_TYPE_CHANGED(p)) | |
2578 | p->status = DIFF_STATUS_TYPE_CHANGED; | |
2579 | ||
2580 | /* from this point on, we are dealing with a pair | |
2581 | * whose both sides are valid and of the same type, i.e. | |
2582 | * either in-place edit or rename/copy edit. | |
2583 | */ | |
2584 | else if (DIFF_PAIR_RENAME(p)) { | |
64479711 LT |
2585 | /* |
2586 | * A rename might have re-connected a broken | |
2587 | * pair up, causing the pathnames to be the | |
2588 | * same again. If so, that's not a rename at | |
2589 | * all, just a modification.. | |
2590 | * | |
2591 | * Otherwise, see if this source was used for | |
2592 | * multiple renames, in which case we decrement | |
2593 | * the count, and call it a copy. | |
6973dcae | 2594 | */ |
64479711 LT |
2595 | if (!strcmp(p->one->path, p->two->path)) |
2596 | p->status = DIFF_STATUS_MODIFIED; | |
2597 | else if (--p->one->rename_used > 0) | |
6973dcae | 2598 | p->status = DIFF_STATUS_COPIED; |
64479711 | 2599 | else |
6973dcae JH |
2600 | p->status = DIFF_STATUS_RENAMED; |
2601 | } | |
a89fccd2 | 2602 | else if (hashcmp(p->one->sha1, p->two->sha1) || |
d516c2d1 JS |
2603 | p->one->mode != p->two->mode || |
2604 | is_null_sha1(p->one->sha1)) | |
6973dcae JH |
2605 | p->status = DIFF_STATUS_MODIFIED; |
2606 | else { | |
2607 | /* This is a "no-change" entry and should not | |
2608 | * happen anymore, but prepare for broken callers. | |
2609 | */ | |
2610 | error("feeding unmodified %s to diffcore", | |
2611 | p->one->path); | |
2612 | p->status = DIFF_STATUS_UNKNOWN; | |
2613 | } | |
2614 | } | |
2615 | diff_debug_queue("resolve-rename-copy done", q); | |
2616 | } | |
2617 | ||
c6744349 | 2618 | static int check_pair_status(struct diff_filepair *p) |
6973dcae | 2619 | { |
6973dcae JH |
2620 | switch (p->status) { |
2621 | case DIFF_STATUS_UNKNOWN: | |
c6744349 | 2622 | return 0; |
6973dcae JH |
2623 | case 0: |
2624 | die("internal error in diff-resolve-rename-copy"); | |
6973dcae | 2625 | default: |
c6744349 | 2626 | return 1; |
6973dcae JH |
2627 | } |
2628 | } | |
2629 | ||
c6744349 TH |
2630 | static void flush_one_pair(struct diff_filepair *p, struct diff_options *opt) |
2631 | { | |
2632 | int fmt = opt->output_format; | |
2633 | ||
2634 | if (fmt & DIFF_FORMAT_CHECKDIFF) | |
2635 | diff_flush_checkdiff(p, opt); | |
2636 | else if (fmt & (DIFF_FORMAT_RAW | DIFF_FORMAT_NAME_STATUS)) | |
2637 | diff_flush_raw(p, opt); | |
2638 | else if (fmt & DIFF_FORMAT_NAME) | |
663af342 | 2639 | write_name_quoted(p->two->path, stdout, opt->line_termination); |
c6744349 TH |
2640 | } |
2641 | ||
4bbd261b SE |
2642 | static void show_file_mode_name(const char *newdelete, struct diff_filespec *fs) |
2643 | { | |
2644 | if (fs->mode) | |
663af342 | 2645 | printf(" %s mode %06o ", newdelete, fs->mode); |
4bbd261b | 2646 | else |
663af342 PH |
2647 | printf(" %s ", newdelete); |
2648 | write_name_quoted(fs->path, stdout, '\n'); | |
4bbd261b SE |
2649 | } |
2650 | ||
2651 | ||
2652 | static void show_mode_change(struct diff_filepair *p, int show_name) | |
2653 | { | |
2654 | if (p->one->mode && p->two->mode && p->one->mode != p->two->mode) { | |
663af342 PH |
2655 | printf(" mode change %06o => %06o%c", p->one->mode, p->two->mode, |
2656 | show_name ? ' ' : '\n'); | |
0d26a64e | 2657 | if (show_name) { |
663af342 | 2658 | write_name_quoted(p->two->path, stdout, '\n'); |
0d26a64e | 2659 | } |
4bbd261b SE |
2660 | } |
2661 | } | |
2662 | ||
2663 | static void show_rename_copy(const char *renamecopy, struct diff_filepair *p) | |
2664 | { | |
b9f44164 | 2665 | char *names = pprint_rename(p->one->path, p->two->path); |
4bbd261b | 2666 | |
125b7630 | 2667 | printf(" %s %s (%d%%)\n", renamecopy, names, similarity_index(p)); |
b9f44164 | 2668 | free(names); |
4bbd261b SE |
2669 | show_mode_change(p, 0); |
2670 | } | |
2671 | ||
2672 | static void diff_summary(struct diff_filepair *p) | |
2673 | { | |
2674 | switch(p->status) { | |
2675 | case DIFF_STATUS_DELETED: | |
2676 | show_file_mode_name("delete", p->one); | |
2677 | break; | |
2678 | case DIFF_STATUS_ADDED: | |
2679 | show_file_mode_name("create", p->two); | |
2680 | break; | |
2681 | case DIFF_STATUS_COPIED: | |
2682 | show_rename_copy("copy", p); | |
2683 | break; | |
2684 | case DIFF_STATUS_RENAMED: | |
2685 | show_rename_copy("rename", p); | |
2686 | break; | |
2687 | default: | |
2688 | if (p->score) { | |
f8b6809d | 2689 | fputs(" rewrite ", stdout); |
663af342 PH |
2690 | write_name_quoted(p->two->path, stdout, ' '); |
2691 | printf("(%d%%)\n", similarity_index(p)); | |
2692 | } | |
2693 | show_mode_change(p, !p->score); | |
4bbd261b SE |
2694 | break; |
2695 | } | |
2696 | } | |
2697 | ||
fcb3d0ad JS |
2698 | struct patch_id_t { |
2699 | struct xdiff_emit_state xm; | |
2700 | SHA_CTX *ctx; | |
2701 | int patchlen; | |
2702 | }; | |
2703 | ||
2704 | static int remove_space(char *line, int len) | |
2705 | { | |
2706 | int i; | |
663af342 PH |
2707 | char *dst = line; |
2708 | unsigned char c; | |
fcb3d0ad | 2709 | |
663af342 PH |
2710 | for (i = 0; i < len; i++) |
2711 | if (!isspace((c = line[i]))) | |
2712 | *dst++ = c; | |
fcb3d0ad | 2713 | |
663af342 | 2714 | return dst - line; |
fcb3d0ad JS |
2715 | } |
2716 | ||
2717 | static void patch_id_consume(void *priv, char *line, unsigned long len) | |
2718 | { | |
2719 | struct patch_id_t *data = priv; | |
2720 | int new_len; | |
2721 | ||
2722 | /* Ignore line numbers when computing the SHA1 of the patch */ | |
cc44c765 | 2723 | if (!prefixcmp(line, "@@ -")) |
fcb3d0ad JS |
2724 | return; |
2725 | ||
2726 | new_len = remove_space(line, len); | |
2727 | ||
2728 | SHA1_Update(data->ctx, line, new_len); | |
2729 | data->patchlen += new_len; | |
2730 | } | |
2731 | ||
2732 | /* returns 0 upon success, and writes result into sha1 */ | |
2733 | static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1) | |
2734 | { | |
2735 | struct diff_queue_struct *q = &diff_queued_diff; | |
2736 | int i; | |
2737 | SHA_CTX ctx; | |
2738 | struct patch_id_t data; | |
2739 | char buffer[PATH_MAX * 4 + 20]; | |
2740 | ||
2741 | SHA1_Init(&ctx); | |
2742 | memset(&data, 0, sizeof(struct patch_id_t)); | |
2743 | data.ctx = &ctx; | |
2744 | data.xm.consume = patch_id_consume; | |
2745 | ||
2746 | for (i = 0; i < q->nr; i++) { | |
2747 | xpparam_t xpp; | |
2748 | xdemitconf_t xecfg; | |
2749 | xdemitcb_t ecb; | |
2750 | mmfile_t mf1, mf2; | |
2751 | struct diff_filepair *p = q->queue[i]; | |
2752 | int len1, len2; | |
2753 | ||
30b25010 | 2754 | memset(&xecfg, 0, sizeof(xecfg)); |
fcb3d0ad JS |
2755 | if (p->status == 0) |
2756 | return error("internal diff status error"); | |
2757 | if (p->status == DIFF_STATUS_UNKNOWN) | |
2758 | continue; | |
2759 | if (diff_unmodified_pair(p)) | |
2760 | continue; | |
2761 | if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || | |
2762 | (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) | |
2763 | continue; | |
2764 | if (DIFF_PAIR_UNMERGED(p)) | |
2765 | continue; | |
2766 | ||
2767 | diff_fill_sha1_info(p->one); | |
2768 | diff_fill_sha1_info(p->two); | |
2769 | if (fill_mmfile(&mf1, p->one) < 0 || | |
2770 | fill_mmfile(&mf2, p->two) < 0) | |
2771 | return error("unable to read files to diff"); | |
2772 | ||
fcb3d0ad JS |
2773 | len1 = remove_space(p->one->path, strlen(p->one->path)); |
2774 | len2 = remove_space(p->two->path, strlen(p->two->path)); | |
2775 | if (p->one->mode == 0) | |
2776 | len1 = snprintf(buffer, sizeof(buffer), | |
2777 | "diff--gita/%.*sb/%.*s" | |
2778 | "newfilemode%06o" | |
2779 | "---/dev/null" | |
2780 | "+++b/%.*s", | |
2781 | len1, p->one->path, | |
2782 | len2, p->two->path, | |
2783 | p->two->mode, | |
2784 | len2, p->two->path); | |
2785 | else if (p->two->mode == 0) | |
2786 | len1 = snprintf(buffer, sizeof(buffer), | |
2787 | "diff--gita/%.*sb/%.*s" | |
2788 | "deletedfilemode%06o" | |
2789 | "---a/%.*s" | |
2790 | "+++/dev/null", | |
2791 | len1, p->one->path, | |
2792 | len2, p->two->path, | |
2793 | p->one->mode, | |
2794 | len1, p->one->path); | |
2795 | else | |
2796 | len1 = snprintf(buffer, sizeof(buffer), | |
2797 | "diff--gita/%.*sb/%.*s" | |
2798 | "---a/%.*s" | |
2799 | "+++b/%.*s", | |
2800 | len1, p->one->path, | |
2801 | len2, p->two->path, | |
2802 | len1, p->one->path, | |
2803 | len2, p->two->path); | |
2804 | SHA1_Update(&ctx, buffer, len1); | |
2805 | ||
2806 | xpp.flags = XDF_NEED_MINIMAL; | |
2807 | xecfg.ctxlen = 3; | |
9fdc3bb5 | 2808 | xecfg.flags = XDL_EMIT_FUNCNAMES; |
fcb3d0ad JS |
2809 | ecb.outf = xdiff_outf; |
2810 | ecb.priv = &data; | |
c279d7e9 | 2811 | xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb); |
fcb3d0ad JS |
2812 | } |
2813 | ||
2814 | SHA1_Final(sha1, &ctx); | |
2815 | return 0; | |
2816 | } | |
2817 | ||
2818 | int diff_flush_patch_id(struct diff_options *options, unsigned char *sha1) | |
2819 | { | |
2820 | struct diff_queue_struct *q = &diff_queued_diff; | |
2821 | int i; | |
2822 | int result = diff_get_patch_id(options, sha1); | |
2823 | ||
2824 | for (i = 0; i < q->nr; i++) | |
2825 | diff_free_filepair(q->queue[i]); | |
2826 | ||
2827 | free(q->queue); | |
2828 | q->queue = NULL; | |
2829 | q->nr = q->alloc = 0; | |
2830 | ||
2831 | return result; | |
2832 | } | |
2833 | ||
946c3784 | 2834 | static int is_summary_empty(const struct diff_queue_struct *q) |
6973dcae | 2835 | { |
6973dcae | 2836 | int i; |
6973dcae | 2837 | |
946c3784 TH |
2838 | for (i = 0; i < q->nr; i++) { |
2839 | const struct diff_filepair *p = q->queue[i]; | |
2840 | ||
2841 | switch (p->status) { | |
2842 | case DIFF_STATUS_DELETED: | |
2843 | case DIFF_STATUS_ADDED: | |
2844 | case DIFF_STATUS_COPIED: | |
2845 | case DIFF_STATUS_RENAMED: | |
2846 | return 0; | |
2847 | default: | |
2848 | if (p->score) | |
2849 | return 0; | |
2850 | if (p->one->mode && p->two->mode && | |
2851 | p->one->mode != p->two->mode) | |
2852 | return 0; | |
2853 | break; | |
2854 | } | |
6973dcae | 2855 | } |
946c3784 TH |
2856 | return 1; |
2857 | } | |
2858 | ||
6973dcae JH |
2859 | void diff_flush(struct diff_options *options) |
2860 | { | |
2861 | struct diff_queue_struct *q = &diff_queued_diff; | |
c6744349 | 2862 | int i, output_format = options->output_format; |
946c3784 | 2863 | int separator = 0; |
6973dcae | 2864 | |
c6744349 TH |
2865 | /* |
2866 | * Order: raw, stat, summary, patch | |
2867 | * or: name/name-status/checkdiff (other bits clear) | |
2868 | */ | |
946c3784 TH |
2869 | if (!q->nr) |
2870 | goto free_queue; | |
6973dcae | 2871 | |
c6744349 TH |
2872 | if (output_format & (DIFF_FORMAT_RAW | |
2873 | DIFF_FORMAT_NAME | | |
2874 | DIFF_FORMAT_NAME_STATUS | | |
2875 | DIFF_FORMAT_CHECKDIFF)) { | |
6973dcae JH |
2876 | for (i = 0; i < q->nr; i++) { |
2877 | struct diff_filepair *p = q->queue[i]; | |
c6744349 TH |
2878 | if (check_pair_status(p)) |
2879 | flush_one_pair(p, options); | |
6973dcae | 2880 | } |
946c3784 | 2881 | separator++; |
6973dcae | 2882 | } |
c6744349 | 2883 | |
ebd124c6 | 2884 | if (output_format & (DIFF_FORMAT_DIFFSTAT|DIFF_FORMAT_SHORTSTAT|DIFF_FORMAT_NUMSTAT)) { |
5e2b0636 | 2885 | struct diffstat_t diffstat; |
c6744349 | 2886 | |
5e2b0636 TH |
2887 | memset(&diffstat, 0, sizeof(struct diffstat_t)); |
2888 | diffstat.xm.consume = diffstat_consume; | |
6973dcae JH |
2889 | for (i = 0; i < q->nr; i++) { |
2890 | struct diff_filepair *p = q->queue[i]; | |
c6744349 | 2891 | if (check_pair_status(p)) |
5e2b0636 | 2892 | diff_flush_stat(p, options, &diffstat); |
6973dcae | 2893 | } |
74e2abe5 JH |
2894 | if (output_format & DIFF_FORMAT_NUMSTAT) |
2895 | show_numstat(&diffstat, options); | |
2896 | if (output_format & DIFF_FORMAT_DIFFSTAT) | |
2897 | show_stats(&diffstat, options); | |
f604652e | 2898 | if (output_format & DIFF_FORMAT_SHORTSTAT) |
ebd124c6 | 2899 | show_shortstats(&diffstat); |
f604652e | 2900 | free_diffstat_info(&diffstat); |
3969cf7d | 2901 | separator++; |
6973dcae JH |
2902 | } |
2903 | ||
946c3784 | 2904 | if (output_format & DIFF_FORMAT_SUMMARY && !is_summary_empty(q)) { |
c6744349 TH |
2905 | for (i = 0; i < q->nr; i++) |
2906 | diff_summary(q->queue[i]); | |
3969cf7d | 2907 | separator++; |
6973dcae JH |
2908 | } |
2909 | ||
c6744349 | 2910 | if (output_format & DIFF_FORMAT_PATCH) { |
946c3784 TH |
2911 | if (separator) { |
2912 | if (options->stat_sep) { | |
2913 | /* attach patch instead of inline */ | |
c6744349 | 2914 | fputs(options->stat_sep, stdout); |
946c3784 | 2915 | } else { |
c6744349 | 2916 | putchar(options->line_termination); |
946c3784 | 2917 | } |
c6744349 TH |
2918 | } |
2919 | ||
2920 | for (i = 0; i < q->nr; i++) { | |
2921 | struct diff_filepair *p = q->queue[i]; | |
2922 | if (check_pair_status(p)) | |
2923 | diff_flush_patch(p, options); | |
2924 | } | |
4bbd261b SE |
2925 | } |
2926 | ||
04245581 JK |
2927 | if (output_format & DIFF_FORMAT_CALLBACK) |
2928 | options->format_callback(q, options, options->format_callback_data); | |
2929 | ||
c6744349 TH |
2930 | for (i = 0; i < q->nr; i++) |
2931 | diff_free_filepair(q->queue[i]); | |
946c3784 | 2932 | free_queue: |
6973dcae JH |
2933 | free(q->queue); |
2934 | q->queue = NULL; | |
2935 | q->nr = q->alloc = 0; | |
2936 | } | |
2937 | ||
2938 | static void diffcore_apply_filter(const char *filter) | |
2939 | { | |
2940 | int i; | |
2941 | struct diff_queue_struct *q = &diff_queued_diff; | |
2942 | struct diff_queue_struct outq; | |
2943 | outq.queue = NULL; | |
2944 | outq.nr = outq.alloc = 0; | |
2945 | ||
2946 | if (!filter) | |
2947 | return; | |
2948 | ||
2949 | if (strchr(filter, DIFF_STATUS_FILTER_AON)) { | |
2950 | int found; | |
2951 | for (i = found = 0; !found && i < q->nr; i++) { | |
2952 | struct diff_filepair *p = q->queue[i]; | |
2953 | if (((p->status == DIFF_STATUS_MODIFIED) && | |
2954 | ((p->score && | |
2955 | strchr(filter, DIFF_STATUS_FILTER_BROKEN)) || | |
2956 | (!p->score && | |
2957 | strchr(filter, DIFF_STATUS_MODIFIED)))) || | |
2958 | ((p->status != DIFF_STATUS_MODIFIED) && | |
2959 | strchr(filter, p->status))) | |
2960 | found++; | |
2961 | } | |
2962 | if (found) | |
2963 | return; | |
2964 | ||
2965 | /* otherwise we will clear the whole queue | |
2966 | * by copying the empty outq at the end of this | |
2967 | * function, but first clear the current entries | |
2968 | * in the queue. | |
2969 | */ | |
2970 | for (i = 0; i < q->nr; i++) | |
2971 | diff_free_filepair(q->queue[i]); | |
2972 | } | |
2973 | else { | |
2974 | /* Only the matching ones */ | |
2975 | for (i = 0; i < q->nr; i++) { | |
2976 | struct diff_filepair *p = q->queue[i]; | |
2977 | ||
2978 | if (((p->status == DIFF_STATUS_MODIFIED) && | |
2979 | ((p->score && | |
2980 | strchr(filter, DIFF_STATUS_FILTER_BROKEN)) || | |
2981 | (!p->score && | |
2982 | strchr(filter, DIFF_STATUS_MODIFIED)))) || | |
2983 | ((p->status != DIFF_STATUS_MODIFIED) && | |
2984 | strchr(filter, p->status))) | |
2985 | diff_q(&outq, p); | |
2986 | else | |
2987 | diff_free_filepair(p); | |
2988 | } | |
2989 | } | |
2990 | free(q->queue); | |
2991 | *q = outq; | |
2992 | } | |
2993 | ||
5701115a SV |
2994 | /* Check whether two filespecs with the same mode and size are identical */ |
2995 | static int diff_filespec_is_identical(struct diff_filespec *one, | |
2996 | struct diff_filespec *two) | |
2997 | { | |
2998 | if (S_ISGITLINK(one->mode)) { | |
2999 | diff_fill_sha1_info(one); | |
3000 | diff_fill_sha1_info(two); | |
3001 | return !hashcmp(one->sha1, two->sha1); | |
3002 | } | |
3003 | if (diff_populate_filespec(one, 0)) | |
3004 | return 0; | |
3005 | if (diff_populate_filespec(two, 0)) | |
3006 | return 0; | |
3007 | return !memcmp(one->data, two->data, one->size); | |
3008 | } | |
3009 | ||
fb13227e JH |
3010 | static void diffcore_skip_stat_unmatch(struct diff_options *diffopt) |
3011 | { | |
3012 | int i; | |
3013 | struct diff_queue_struct *q = &diff_queued_diff; | |
3014 | struct diff_queue_struct outq; | |
3015 | outq.queue = NULL; | |
3016 | outq.nr = outq.alloc = 0; | |
3017 | ||
3018 | for (i = 0; i < q->nr; i++) { | |
3019 | struct diff_filepair *p = q->queue[i]; | |
3020 | ||
3021 | /* | |
3022 | * 1. Entries that come from stat info dirtyness | |
3023 | * always have both sides (iow, not create/delete), | |
3024 | * one side of the object name is unknown, with | |
3025 | * the same mode and size. Keep the ones that | |
3026 | * do not match these criteria. They have real | |
3027 | * differences. | |
3028 | * | |
3029 | * 2. At this point, the file is known to be modified, | |
3030 | * with the same mode and size, and the object | |
3031 | * name of one side is unknown. Need to inspect | |
3032 | * the identical contents. | |
3033 | */ | |
3034 | if (!DIFF_FILE_VALID(p->one) || /* (1) */ | |
3035 | !DIFF_FILE_VALID(p->two) || | |
3036 | (p->one->sha1_valid && p->two->sha1_valid) || | |
3037 | (p->one->mode != p->two->mode) || | |
3038 | diff_populate_filespec(p->one, 1) || | |
3039 | diff_populate_filespec(p->two, 1) || | |
3040 | (p->one->size != p->two->size) || | |
5701115a | 3041 | !diff_filespec_is_identical(p->one, p->two)) /* (2) */ |
fb13227e JH |
3042 | diff_q(&outq, p); |
3043 | else { | |
3044 | /* | |
3045 | * The caller can subtract 1 from skip_stat_unmatch | |
3046 | * to determine how many paths were dirty only | |
3047 | * due to stat info mismatch. | |
3048 | */ | |
8f67f8ae | 3049 | if (!DIFF_OPT_TST(diffopt, NO_INDEX)) |
6d2d9e86 | 3050 | diffopt->skip_stat_unmatch++; |
fb13227e JH |
3051 | diff_free_filepair(p); |
3052 | } | |
3053 | } | |
3054 | free(q->queue); | |
3055 | *q = outq; | |
3056 | } | |
3057 | ||
6973dcae JH |
3058 | void diffcore_std(struct diff_options *options) |
3059 | { | |
8f67f8ae | 3060 | if (DIFF_OPT_TST(options, QUIET)) |
68aacb2f | 3061 | return; |
706098af | 3062 | |
8f67f8ae | 3063 | if (options->skip_stat_unmatch && !DIFF_OPT_TST(options, FIND_COPIES_HARDER)) |
fb13227e | 3064 | diffcore_skip_stat_unmatch(options); |
6973dcae JH |
3065 | if (options->break_opt != -1) |
3066 | diffcore_break(options->break_opt); | |
3067 | if (options->detect_rename) | |
3068 | diffcore_rename(options); | |
3069 | if (options->break_opt != -1) | |
3070 | diffcore_merge_broken(); | |
3071 | if (options->pickaxe) | |
3072 | diffcore_pickaxe(options->pickaxe, options->pickaxe_opts); | |
3073 | if (options->orderfile) | |
3074 | diffcore_order(options->orderfile); | |
3075 | diff_resolve_rename_copy(); | |
3076 | diffcore_apply_filter(options->filter); | |
68aacb2f | 3077 | |
8f67f8ae PH |
3078 | if (diff_queued_diff.nr) |
3079 | DIFF_OPT_SET(options, HAS_CHANGES); | |
3080 | else | |
3081 | DIFF_OPT_CLR(options, HAS_CHANGES); | |
6973dcae JH |
3082 | } |
3083 | ||
da31b358 JH |
3084 | int diff_result_code(struct diff_options *opt, int status) |
3085 | { | |
3086 | int result = 0; | |
3087 | if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) && | |
3088 | !(opt->output_format & DIFF_FORMAT_CHECKDIFF)) | |
3089 | return status; | |
3090 | if (DIFF_OPT_TST(opt, EXIT_WITH_STATUS) && | |
3091 | DIFF_OPT_TST(opt, HAS_CHANGES)) | |
3092 | result |= 01; | |
3093 | if ((opt->output_format & DIFF_FORMAT_CHECKDIFF) && | |
3094 | DIFF_OPT_TST(opt, CHECK_FAILED)) | |
3095 | result |= 02; | |
3096 | return result; | |
3097 | } | |
6973dcae | 3098 | |
6973dcae JH |
3099 | void diff_addremove(struct diff_options *options, |
3100 | int addremove, unsigned mode, | |
3101 | const unsigned char *sha1, | |
3102 | const char *base, const char *path) | |
3103 | { | |
3104 | char concatpath[PATH_MAX]; | |
3105 | struct diff_filespec *one, *two; | |
3106 | ||
3107 | /* This may look odd, but it is a preparation for | |
3108 | * feeding "there are unchanged files which should | |
3109 | * not produce diffs, but when you are doing copy | |
3110 | * detection you would need them, so here they are" | |
3111 | * entries to the diff-core. They will be prefixed | |
3112 | * with something like '=' or '*' (I haven't decided | |
3113 | * which but should not make any difference). | |
a6080a0a | 3114 | * Feeding the same new and old to diff_change() |
6973dcae JH |
3115 | * also has the same effect. |
3116 | * Before the final output happens, they are pruned after | |
3117 | * merged into rename/copy pairs as appropriate. | |
3118 | */ | |
8f67f8ae | 3119 | if (DIFF_OPT_TST(options, REVERSE_DIFF)) |
6973dcae JH |
3120 | addremove = (addremove == '+' ? '-' : |
3121 | addremove == '-' ? '+' : addremove); | |
3122 | ||
3123 | if (!path) path = ""; | |
3124 | sprintf(concatpath, "%s%s", base, path); | |
3125 | one = alloc_filespec(concatpath); | |
3126 | two = alloc_filespec(concatpath); | |
3127 | ||
3128 | if (addremove != '+') | |
3129 | fill_filespec(one, sha1, mode); | |
3130 | if (addremove != '-') | |
3131 | fill_filespec(two, sha1, mode); | |
3132 | ||
3133 | diff_queue(&diff_queued_diff, one, two); | |
8f67f8ae | 3134 | DIFF_OPT_SET(options, HAS_CHANGES); |
6973dcae JH |
3135 | } |
3136 | ||
3137 | void diff_change(struct diff_options *options, | |
3138 | unsigned old_mode, unsigned new_mode, | |
3139 | const unsigned char *old_sha1, | |
3140 | const unsigned char *new_sha1, | |
a6080a0a | 3141 | const char *base, const char *path) |
6973dcae JH |
3142 | { |
3143 | char concatpath[PATH_MAX]; | |
3144 | struct diff_filespec *one, *two; | |
3145 | ||
8f67f8ae | 3146 | if (DIFF_OPT_TST(options, REVERSE_DIFF)) { |
6973dcae JH |
3147 | unsigned tmp; |
3148 | const unsigned char *tmp_c; | |
3149 | tmp = old_mode; old_mode = new_mode; new_mode = tmp; | |
3150 | tmp_c = old_sha1; old_sha1 = new_sha1; new_sha1 = tmp_c; | |
3151 | } | |
3152 | if (!path) path = ""; | |
3153 | sprintf(concatpath, "%s%s", base, path); | |
3154 | one = alloc_filespec(concatpath); | |
3155 | two = alloc_filespec(concatpath); | |
3156 | fill_filespec(one, old_sha1, old_mode); | |
3157 | fill_filespec(two, new_sha1, new_mode); | |
3158 | ||
3159 | diff_queue(&diff_queued_diff, one, two); | |
8f67f8ae | 3160 | DIFF_OPT_SET(options, HAS_CHANGES); |
6973dcae JH |
3161 | } |
3162 | ||
3163 | void diff_unmerge(struct diff_options *options, | |
e9c84099 JH |
3164 | const char *path, |
3165 | unsigned mode, const unsigned char *sha1) | |
6973dcae JH |
3166 | { |
3167 | struct diff_filespec *one, *two; | |
3168 | one = alloc_filespec(path); | |
3169 | two = alloc_filespec(path); | |
e9c84099 JH |
3170 | fill_filespec(one, sha1, mode); |
3171 | diff_queue(&diff_queued_diff, one, two)->is_unmerged = 1; | |
6973dcae | 3172 | } |