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Commit | Line | Data |
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be3cfa85 JH |
1 | /* |
2 | * Copyright (C) 2005 Junio C Hamano | |
3 | */ | |
86436c28 | 4 | #include "cache.h" |
6fb737be | 5 | #include "quote.h" |
6973dcae | 6 | #include "commit.h" |
86436c28 | 7 | #include "diff.h" |
427dcb4b | 8 | #include "diffcore.h" |
6973dcae | 9 | #include "revision.h" |
1cfe7733 | 10 | #include "cache-tree.h" |
d1f2d7e8 | 11 | #include "unpack-trees.h" |
948dd346 | 12 | #include "refs.h" |
ee6fc514 | 13 | #include "submodule.h" |
427dcb4b | 14 | |
b46f0b6d | 15 | /* |
6973dcae | 16 | * diff-files |
b46f0b6d | 17 | */ |
f0c6b2a2 | 18 | |
948dd346 | 19 | /* |
1392a377 JH |
20 | * Has the work tree entity been removed? |
21 | * | |
22 | * Return 1 if it was removed from the work tree, 0 if an entity to be | |
23 | * compared with the cache entry ce still exists (the latter includes | |
24 | * the case where a directory that is not a submodule repository | |
25 | * exists for ce that is a submodule -- it is a submodule that is not | |
26 | * checked out). Return negative for an error. | |
948dd346 | 27 | */ |
c40641b7 | 28 | static int check_removed(const struct cache_entry *ce, struct stat *st) |
948dd346 JH |
29 | { |
30 | if (lstat(ce->name, st) < 0) { | |
31 | if (errno != ENOENT && errno != ENOTDIR) | |
32 | return -1; | |
33 | return 1; | |
34 | } | |
57199892 | 35 | if (has_symlink_leading_path(ce->name, ce_namelen(ce))) |
948dd346 JH |
36 | return 1; |
37 | if (S_ISDIR(st->st_mode)) { | |
38 | unsigned char sub[20]; | |
1392a377 JH |
39 | |
40 | /* | |
41 | * If ce is already a gitlink, we can have a plain | |
42 | * directory (i.e. the submodule is not checked out), | |
43 | * or a checked out submodule. Either case this is not | |
44 | * a case where something was removed from the work tree, | |
45 | * so we will return 0. | |
46 | * | |
47 | * Otherwise, if the directory is not a submodule | |
48 | * repository, that means ce which was a blob turned into | |
49 | * a directory --- the blob was removed! | |
50 | */ | |
51 | if (!S_ISGITLINK(ce->ce_mode) && | |
52 | resolve_gitlink_ref(ce->name, "HEAD", sub)) | |
948dd346 JH |
53 | return 1; |
54 | } | |
55 | return 0; | |
56 | } | |
d516c2d1 | 57 | |
4bd5b7da | 58 | int run_diff_files(struct rev_info *revs, unsigned int option) |
f0c6b2a2 | 59 | { |
6973dcae JH |
60 | int entries, i; |
61 | int diff_unmerged_stage = revs->max_count; | |
4bd5b7da | 62 | int silent_on_removed = option & DIFF_SILENT_ON_REMOVED; |
fb63d7f8 JH |
63 | unsigned ce_option = ((option & DIFF_RACY_IS_MODIFIED) |
64 | ? CE_MATCH_RACY_IS_DIRTY : 0); | |
f0c6b2a2 | 65 | |
a5a818ee JH |
66 | diff_set_mnemonic_prefix(&revs->diffopt, "i/", "w/"); |
67 | ||
6973dcae JH |
68 | if (diff_unmerged_stage < 0) |
69 | diff_unmerged_stage = 2; | |
b4e1e4a7 | 70 | entries = active_nr; |
6973dcae | 71 | for (i = 0; i < entries; i++) { |
be3cfa85 | 72 | struct stat st; |
6973dcae JH |
73 | unsigned int oldmode, newmode; |
74 | struct cache_entry *ce = active_cache[i]; | |
75 | int changed; | |
e3d42c47 | 76 | unsigned dirty_submodule = 0; |
8676eb43 | 77 | |
90b19941 | 78 | if (DIFF_OPT_TST(&revs->diffopt, QUICK) && |
8f67f8ae | 79 | DIFF_OPT_TST(&revs->diffopt, HAS_CHANGES)) |
822cac01 JH |
80 | break; |
81 | ||
6973dcae | 82 | if (!ce_path_match(ce, revs->prune_data)) |
8676eb43 | 83 | continue; |
be3cfa85 | 84 | |
6973dcae | 85 | if (ce_stage(ce)) { |
b4b15503 | 86 | struct combine_diff_path *dpath; |
6973dcae | 87 | int num_compare_stages = 0; |
b4b15503 | 88 | size_t path_len; |
6973dcae | 89 | |
b4b15503 FF |
90 | path_len = ce_namelen(ce); |
91 | ||
4fc970c4 | 92 | dpath = xmalloc(combine_diff_path_size(5, path_len)); |
b4b15503 FF |
93 | dpath->path = (char *) &(dpath->parent[5]); |
94 | ||
95 | dpath->next = NULL; | |
96 | dpath->len = path_len; | |
97 | memcpy(dpath->path, ce->name, path_len); | |
98 | dpath->path[path_len] = '\0'; | |
a8e0d16d | 99 | hashclr(dpath->sha1); |
b4b15503 | 100 | memset(&(dpath->parent[0]), 0, |
4fc970c4 JH |
101 | sizeof(struct combine_diff_parent)*5); |
102 | ||
c40641b7 | 103 | changed = check_removed(ce, &st); |
f58dbf23 JH |
104 | if (!changed) |
105 | dpath->mode = ce_mode_from_stat(ce, st.st_mode); | |
106 | else { | |
107 | if (changed < 0) { | |
4fc970c4 JH |
108 | perror(ce->name); |
109 | continue; | |
110 | } | |
111 | if (silent_on_removed) | |
112 | continue; | |
113 | } | |
6973dcae JH |
114 | |
115 | while (i < entries) { | |
116 | struct cache_entry *nce = active_cache[i]; | |
117 | int stage; | |
118 | ||
119 | if (strcmp(ce->name, nce->name)) | |
120 | break; | |
121 | ||
122 | /* Stage #2 (ours) is the first parent, | |
123 | * stage #3 (theirs) is the second. | |
124 | */ | |
125 | stage = ce_stage(nce); | |
126 | if (2 <= stage) { | |
7a51ed66 | 127 | int mode = nce->ce_mode; |
6973dcae | 128 | num_compare_stages++; |
e702496e | 129 | hashcpy(dpath->parent[stage-2].sha1, nce->sha1); |
7a51ed66 | 130 | dpath->parent[stage-2].mode = ce_mode_from_stat(nce, mode); |
b4b15503 | 131 | dpath->parent[stage-2].status = |
6973dcae JH |
132 | DIFF_STATUS_MODIFIED; |
133 | } | |
134 | ||
135 | /* diff against the proper unmerged stage */ | |
136 | if (stage == diff_unmerged_stage) | |
137 | ce = nce; | |
138 | i++; | |
139 | } | |
140 | /* | |
141 | * Compensate for loop update | |
f0c6b2a2 | 142 | */ |
6973dcae | 143 | i--; |
6b5ee137 | 144 | |
6973dcae | 145 | if (revs->combine_merges && num_compare_stages == 2) { |
b4b15503 | 146 | show_combined_diff(dpath, 2, |
6973dcae JH |
147 | revs->dense_combined_merges, |
148 | revs); | |
b4b15503 | 149 | free(dpath); |
6973dcae | 150 | continue; |
1b1480ff | 151 | } |
b4b15503 FF |
152 | free(dpath); |
153 | dpath = NULL; | |
0e3994fa | 154 | |
6973dcae JH |
155 | /* |
156 | * Show the diff for the 'ce' if we found the one | |
157 | * from the desired stage. | |
158 | */ | |
e9c84099 | 159 | diff_unmerge(&revs->diffopt, ce->name, 0, null_sha1); |
6973dcae JH |
160 | if (ce_stage(ce) != diff_unmerged_stage) |
161 | continue; | |
eeaa4603 | 162 | } |
6b14d7fa | 163 | |
125fd984 | 164 | if (ce_uptodate(ce) || ce_skip_worktree(ce)) |
d1f2d7e8 | 165 | continue; |
f58dbf23 | 166 | |
540e694b NTND |
167 | /* If CE_VALID is set, don't look at workdir for file removal */ |
168 | changed = (ce->ce_flags & CE_VALID) ? 0 : check_removed(ce, &st); | |
f58dbf23 JH |
169 | if (changed) { |
170 | if (changed < 0) { | |
6973dcae | 171 | perror(ce->name); |
15d061b4 JH |
172 | continue; |
173 | } | |
6973dcae JH |
174 | if (silent_on_removed) |
175 | continue; | |
7a51ed66 | 176 | diff_addremove(&revs->diffopt, '-', ce->ce_mode, |
e3d42c47 | 177 | ce->sha1, ce->name, 0); |
6973dcae | 178 | continue; |
f2ce9fde | 179 | } |
fb63d7f8 | 180 | changed = ce_match_stat(ce, &st, ce_option); |
e3d42c47 | 181 | if (S_ISGITLINK(ce->ce_mode) |
4d34477f | 182 | && !DIFF_OPT_TST(&revs->diffopt, IGNORE_SUBMODULES) |
e3d42c47 JL |
183 | && (!changed || (revs->diffopt.output_format & DIFF_FORMAT_PATCH)) |
184 | && is_submodule_modified(ce->name)) { | |
185 | changed = 1; | |
186 | dirty_submodule = 1; | |
187 | } | |
8fa29602 JH |
188 | if (!changed) { |
189 | ce_mark_uptodate(ce); | |
190 | if (!DIFF_OPT_TST(&revs->diffopt, FIND_COPIES_HARDER)) | |
191 | continue; | |
192 | } | |
7a51ed66 LT |
193 | oldmode = ce->ce_mode; |
194 | newmode = ce_mode_from_stat(ce, st.st_mode); | |
6973dcae JH |
195 | diff_change(&revs->diffopt, oldmode, newmode, |
196 | ce->sha1, (changed ? null_sha1 : ce->sha1), | |
e3d42c47 | 197 | ce->name, 0, dirty_submodule); |
77eb2720 | 198 | |
7ca45252 | 199 | } |
6973dcae JH |
200 | diffcore_std(&revs->diffopt); |
201 | diff_flush(&revs->diffopt); | |
202 | return 0; | |
77eb2720 | 203 | } |
be3cfa85 | 204 | |
e09ad6e1 JH |
205 | /* |
206 | * diff-index | |
207 | */ | |
208 | ||
209 | /* A file entry went away or appeared */ | |
210 | static void diff_index_show_file(struct rev_info *revs, | |
211 | const char *prefix, | |
212 | struct cache_entry *ce, | |
e3d42c47 JL |
213 | const unsigned char *sha1, unsigned int mode, |
214 | unsigned dirty_submodule) | |
e09ad6e1 | 215 | { |
7a51ed66 | 216 | diff_addremove(&revs->diffopt, prefix[0], mode, |
e3d42c47 | 217 | sha1, ce->name, dirty_submodule); |
e09ad6e1 JH |
218 | } |
219 | ||
220 | static int get_stat_data(struct cache_entry *ce, | |
c8c16f28 | 221 | const unsigned char **sha1p, |
e09ad6e1 | 222 | unsigned int *modep, |
e3d42c47 | 223 | int cached, int match_missing, |
4d34477f | 224 | unsigned *dirty_submodule, struct diff_options *diffopt) |
e09ad6e1 | 225 | { |
c8c16f28 | 226 | const unsigned char *sha1 = ce->sha1; |
e09ad6e1 JH |
227 | unsigned int mode = ce->ce_mode; |
228 | ||
658dd48c | 229 | if (!cached && !ce_uptodate(ce)) { |
e09ad6e1 JH |
230 | int changed; |
231 | struct stat st; | |
c40641b7 | 232 | changed = check_removed(ce, &st); |
948dd346 JH |
233 | if (changed < 0) |
234 | return -1; | |
235 | else if (changed) { | |
236 | if (match_missing) { | |
e09ad6e1 JH |
237 | *sha1p = sha1; |
238 | *modep = mode; | |
239 | return 0; | |
240 | } | |
241 | return -1; | |
242 | } | |
243 | changed = ce_match_stat(ce, &st, 0); | |
e3d42c47 | 244 | if (S_ISGITLINK(ce->ce_mode) |
4d34477f JL |
245 | && !DIFF_OPT_TST(diffopt, IGNORE_SUBMODULES) |
246 | && (!changed || (diffopt->output_format & DIFF_FORMAT_PATCH)) | |
e3d42c47 JL |
247 | && is_submodule_modified(ce->name)) { |
248 | changed = 1; | |
249 | *dirty_submodule = 1; | |
250 | } | |
251 | if (changed) { | |
185c975f | 252 | mode = ce_mode_from_stat(ce, st.st_mode); |
c8c16f28 | 253 | sha1 = null_sha1; |
e09ad6e1 JH |
254 | } |
255 | } | |
256 | ||
257 | *sha1p = sha1; | |
258 | *modep = mode; | |
259 | return 0; | |
260 | } | |
261 | ||
ff7e6aad | 262 | static void show_new_file(struct rev_info *revs, |
e09ad6e1 JH |
263 | struct cache_entry *new, |
264 | int cached, int match_missing) | |
265 | { | |
c8c16f28 | 266 | const unsigned char *sha1; |
e09ad6e1 | 267 | unsigned int mode; |
e3d42c47 | 268 | unsigned dirty_submodule = 0; |
e09ad6e1 | 269 | |
948dd346 JH |
270 | /* |
271 | * New file in the index: it might actually be different in | |
e09ad6e1 JH |
272 | * the working copy. |
273 | */ | |
e3d42c47 | 274 | if (get_stat_data(new, &sha1, &mode, cached, match_missing, |
4d34477f | 275 | &dirty_submodule, &revs->diffopt) < 0) |
e09ad6e1 JH |
276 | return; |
277 | ||
e3d42c47 | 278 | diff_index_show_file(revs, "+", new, sha1, mode, dirty_submodule); |
e09ad6e1 JH |
279 | } |
280 | ||
ff7e6aad | 281 | static int show_modified(struct rev_info *revs, |
e09ad6e1 JH |
282 | struct cache_entry *old, |
283 | struct cache_entry *new, | |
284 | int report_missing, | |
285 | int cached, int match_missing) | |
286 | { | |
287 | unsigned int mode, oldmode; | |
c8c16f28 | 288 | const unsigned char *sha1; |
e3d42c47 | 289 | unsigned dirty_submodule = 0; |
e09ad6e1 | 290 | |
e3d42c47 | 291 | if (get_stat_data(new, &sha1, &mode, cached, match_missing, |
4d34477f | 292 | &dirty_submodule, &revs->diffopt) < 0) { |
e09ad6e1 JH |
293 | if (report_missing) |
294 | diff_index_show_file(revs, "-", old, | |
e3d42c47 | 295 | old->sha1, old->ce_mode, 0); |
e09ad6e1 JH |
296 | return -1; |
297 | } | |
298 | ||
cb2b9f5e PM |
299 | if (revs->combine_merges && !cached && |
300 | (hashcmp(sha1, old->sha1) || hashcmp(old->sha1, new->sha1))) { | |
301 | struct combine_diff_path *p; | |
302 | int pathlen = ce_namelen(new); | |
303 | ||
304 | p = xmalloc(combine_diff_path_size(2, pathlen)); | |
305 | p->path = (char *) &p->parent[2]; | |
306 | p->next = NULL; | |
307 | p->len = pathlen; | |
308 | memcpy(p->path, new->name, pathlen); | |
309 | p->path[pathlen] = 0; | |
7a51ed66 | 310 | p->mode = mode; |
cb2b9f5e PM |
311 | hashclr(p->sha1); |
312 | memset(p->parent, 0, 2 * sizeof(struct combine_diff_parent)); | |
313 | p->parent[0].status = DIFF_STATUS_MODIFIED; | |
7a51ed66 | 314 | p->parent[0].mode = new->ce_mode; |
cb2b9f5e PM |
315 | hashcpy(p->parent[0].sha1, new->sha1); |
316 | p->parent[1].status = DIFF_STATUS_MODIFIED; | |
7a51ed66 | 317 | p->parent[1].mode = old->ce_mode; |
cb2b9f5e PM |
318 | hashcpy(p->parent[1].sha1, old->sha1); |
319 | show_combined_diff(p, 2, revs->dense_combined_merges, revs); | |
320 | free(p); | |
321 | return 0; | |
322 | } | |
323 | ||
e09ad6e1 | 324 | oldmode = old->ce_mode; |
a89fccd2 | 325 | if (mode == oldmode && !hashcmp(sha1, old->sha1) && |
8f67f8ae | 326 | !DIFF_OPT_TST(&revs->diffopt, FIND_COPIES_HARDER)) |
e09ad6e1 JH |
327 | return 0; |
328 | ||
e09ad6e1 | 329 | diff_change(&revs->diffopt, oldmode, mode, |
e3d42c47 | 330 | old->sha1, sha1, old->name, 0, dirty_submodule); |
e09ad6e1 JH |
331 | return 0; |
332 | } | |
333 | ||
d1f2d7e8 LT |
334 | /* |
335 | * This gets a mix of an existing index and a tree, one pathname entry | |
336 | * at a time. The index entry may be a single stage-0 one, but it could | |
337 | * also be multiple unmerged entries (in which case idx_pos/idx_nr will | |
338 | * give you the position and number of entries in the index). | |
339 | */ | |
340 | static void do_oneway_diff(struct unpack_trees_options *o, | |
341 | struct cache_entry *idx, | |
34110cd4 | 342 | struct cache_entry *tree) |
e09ad6e1 | 343 | { |
ff7e6aad | 344 | struct rev_info *revs = o->unpack_data; |
d1f2d7e8 | 345 | int match_missing, cached; |
5c21ac0e | 346 | |
540e694b | 347 | /* if the entry is not checked out, don't examine work tree */ |
b4d1690d NTND |
348 | cached = o->index_only || |
349 | (idx && ((idx->ce_flags & CE_VALID) || ce_skip_worktree(idx))); | |
a6080a0a | 350 | /* |
5c21ac0e | 351 | * Backward compatibility wart - "diff-index -m" does |
d1f2d7e8 LT |
352 | * not mean "do not ignore merges", but "match_missing". |
353 | * | |
354 | * But with the revision flag parsing, that's found in | |
355 | * "!revs->ignore_merges". | |
356 | */ | |
d1f2d7e8 LT |
357 | match_missing = !revs->ignore_merges; |
358 | ||
359 | if (cached && idx && ce_stage(idx)) { | |
29796c6c JH |
360 | diff_unmerge(&revs->diffopt, idx->name, idx->ce_mode, |
361 | idx->sha1); | |
d1f2d7e8 LT |
362 | return; |
363 | } | |
364 | ||
365 | /* | |
366 | * Something added to the tree? | |
367 | */ | |
368 | if (!tree) { | |
ff7e6aad | 369 | show_new_file(revs, idx, cached, match_missing); |
d1f2d7e8 LT |
370 | return; |
371 | } | |
372 | ||
373 | /* | |
374 | * Something removed from the tree? | |
5c21ac0e | 375 | */ |
d1f2d7e8 | 376 | if (!idx) { |
e3d42c47 | 377 | diff_index_show_file(revs, "-", tree, tree->sha1, tree->ce_mode, 0); |
d1f2d7e8 LT |
378 | return; |
379 | } | |
380 | ||
381 | /* Show difference between old and new */ | |
ff7e6aad | 382 | show_modified(revs, tree, idx, 1, cached, match_missing); |
d1f2d7e8 LT |
383 | } |
384 | ||
d1f2d7e8 LT |
385 | /* |
386 | * The unpack_trees() interface is designed for merging, so | |
387 | * the different source entries are designed primarily for | |
388 | * the source trees, with the old index being really mainly | |
389 | * used for being replaced by the result. | |
390 | * | |
391 | * For diffing, the index is more important, and we only have a | |
392 | * single tree. | |
393 | * | |
da8ba5e7 | 394 | * We're supposed to advance o->pos to skip what we have already processed. |
d1f2d7e8 LT |
395 | * |
396 | * This wrapper makes it all more readable, and takes care of all | |
397 | * the fairly complex unpack_trees() semantic requirements, including | |
398 | * the skipping, the path matching, the type conflict cases etc. | |
399 | */ | |
34110cd4 | 400 | static int oneway_diff(struct cache_entry **src, struct unpack_trees_options *o) |
d1f2d7e8 | 401 | { |
d1f2d7e8 LT |
402 | struct cache_entry *idx = src[0]; |
403 | struct cache_entry *tree = src[1]; | |
ff7e6aad | 404 | struct rev_info *revs = o->unpack_data; |
d1f2d7e8 | 405 | |
d1f2d7e8 LT |
406 | /* |
407 | * Unpack-trees generates a DF/conflict entry if | |
408 | * there was a directory in the index and a tree | |
409 | * in the tree. From a diff standpoint, that's a | |
410 | * delete of the tree and a create of the file. | |
411 | */ | |
412 | if (tree == o->df_conflict_entry) | |
413 | tree = NULL; | |
414 | ||
415 | if (ce_path_match(idx ? idx : tree, revs->prune_data)) | |
34110cd4 | 416 | do_oneway_diff(o, idx, tree); |
d1f2d7e8 | 417 | |
34110cd4 | 418 | return 0; |
d1f2d7e8 LT |
419 | } |
420 | ||
421 | int run_diff_index(struct rev_info *revs, int cached) | |
422 | { | |
423 | struct object *ent; | |
424 | struct tree *tree; | |
425 | const char *tree_name; | |
426 | struct unpack_trees_options opts; | |
427 | struct tree_desc t; | |
e09ad6e1 | 428 | |
1f1e895f LT |
429 | ent = revs->pending.objects[0].item; |
430 | tree_name = revs->pending.objects[0].name; | |
e09ad6e1 JH |
431 | tree = parse_tree_indirect(ent->sha1); |
432 | if (!tree) | |
433 | return error("bad tree object %s", tree_name); | |
d1f2d7e8 LT |
434 | |
435 | memset(&opts, 0, sizeof(opts)); | |
436 | opts.head_idx = 1; | |
437 | opts.index_only = cached; | |
a0919ced JH |
438 | opts.diff_index_cached = (cached && |
439 | !DIFF_OPT_TST(&revs->diffopt, FIND_COPIES_HARDER)); | |
d1f2d7e8 LT |
440 | opts.merge = 1; |
441 | opts.fn = oneway_diff; | |
ff7e6aad | 442 | opts.unpack_data = revs; |
34110cd4 LT |
443 | opts.src_index = &the_index; |
444 | opts.dst_index = NULL; | |
d1f2d7e8 LT |
445 | |
446 | init_tree_desc(&t, tree->buffer, tree->size); | |
203a2fe1 DB |
447 | if (unpack_trees(1, &t, &opts)) |
448 | exit(128); | |
d1f2d7e8 | 449 | |
a5a818ee | 450 | diff_set_mnemonic_prefix(&revs->diffopt, "c/", cached ? "i/" : "w/"); |
730f7284 | 451 | diffcore_fix_diff_index(&revs->diffopt); |
e09ad6e1 JH |
452 | diffcore_std(&revs->diffopt); |
453 | diff_flush(&revs->diffopt); | |
d1f2d7e8 | 454 | return 0; |
e09ad6e1 | 455 | } |
1cfe7733 JH |
456 | |
457 | int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt) | |
458 | { | |
459 | struct tree *tree; | |
460 | struct rev_info revs; | |
461 | int i; | |
462 | struct cache_entry **dst; | |
463 | struct cache_entry *last = NULL; | |
204ce979 JS |
464 | struct unpack_trees_options opts; |
465 | struct tree_desc t; | |
1cfe7733 JH |
466 | |
467 | /* | |
468 | * This is used by git-blame to run diff-cache internally; | |
469 | * it potentially needs to repeatedly run this, so we will | |
470 | * start by removing the higher order entries the last round | |
471 | * left behind. | |
472 | */ | |
473 | dst = active_cache; | |
474 | for (i = 0; i < active_nr; i++) { | |
475 | struct cache_entry *ce = active_cache[i]; | |
476 | if (ce_stage(ce)) { | |
477 | if (last && !strcmp(ce->name, last->name)) | |
478 | continue; | |
479 | cache_tree_invalidate_path(active_cache_tree, | |
480 | ce->name); | |
481 | last = ce; | |
7a51ed66 | 482 | ce->ce_flags |= CE_REMOVE; |
1cfe7733 JH |
483 | } |
484 | *dst++ = ce; | |
485 | } | |
486 | active_nr = dst - active_cache; | |
487 | ||
488 | init_revisions(&revs, NULL); | |
489 | revs.prune_data = opt->paths; | |
490 | tree = parse_tree_indirect(tree_sha1); | |
491 | if (!tree) | |
492 | die("bad tree object %s", sha1_to_hex(tree_sha1)); | |
204ce979 JS |
493 | |
494 | memset(&opts, 0, sizeof(opts)); | |
495 | opts.head_idx = 1; | |
496 | opts.index_only = 1; | |
a0919ced | 497 | opts.diff_index_cached = !DIFF_OPT_TST(opt, FIND_COPIES_HARDER); |
204ce979 JS |
498 | opts.merge = 1; |
499 | opts.fn = oneway_diff; | |
ff7e6aad | 500 | opts.unpack_data = &revs; |
34110cd4 LT |
501 | opts.src_index = &the_index; |
502 | opts.dst_index = &the_index; | |
204ce979 JS |
503 | |
504 | init_tree_desc(&t, tree->buffer, tree->size); | |
203a2fe1 DB |
505 | if (unpack_trees(1, &t, &opts)) |
506 | exit(128); | |
204ce979 | 507 | return 0; |
1cfe7733 | 508 | } |
75f3ff2e SB |
509 | |
510 | int index_differs_from(const char *def, int diff_flags) | |
511 | { | |
512 | struct rev_info rev; | |
513 | ||
514 | init_revisions(&rev, NULL); | |
515 | setup_revisions(0, NULL, &rev, def); | |
90b19941 | 516 | DIFF_OPT_SET(&rev.diffopt, QUICK); |
75f3ff2e SB |
517 | DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS); |
518 | rev.diffopt.flags |= diff_flags; | |
519 | run_diff_index(&rev, 1); | |
520 | if (rev.pending.alloc) | |
521 | free(rev.pending.objects); | |
522 | return (DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES) != 0); | |
523 | } |