]>
Commit | Line | Data |
---|---|---|
65056021 JH |
1 | /* |
2 | * Builtin "git diff" | |
3 | * | |
4 | * Copyright (c) 2006 Junio C Hamano | |
5 | */ | |
07047d68 | 6 | #define USE_THE_INDEX_VARIABLE |
65056021 | 7 | #include "cache.h" |
b2141fc1 | 8 | #include "config.h" |
8bfcb3a6 | 9 | #include "ewah/ewok.h" |
697cc8ef | 10 | #include "lockfile.h" |
6b2f2d98 | 11 | #include "color.h" |
65056021 JH |
12 | #include "commit.h" |
13 | #include "blob.h" | |
f394e093 | 14 | #include "gettext.h" |
65056021 JH |
15 | #include "tag.h" |
16 | #include "diff.h" | |
3b6c17b5 | 17 | #include "diff-merges.h" |
65056021 | 18 | #include "diffcore.h" |
fbffdfb1 | 19 | #include "preload-index.h" |
08c46a49 | 20 | #include "read-cache-ll.h" |
65056021 JH |
21 | #include "revision.h" |
22 | #include "log-tree.h" | |
23 | #include "builtin.h" | |
e38da487 | 24 | #include "setup.h" |
302ad7a9 | 25 | #include "submodule.h" |
fe299ec5 | 26 | #include "oid-array.h" |
d4a4f929 | 27 | #include "tree.h" |
65056021 | 28 | |
470faf96 TG |
29 | #define DIFF_NO_INDEX_EXPLICIT 1 |
30 | #define DIFF_NO_INDEX_IMPLICIT 2 | |
31 | ||
65056021 | 32 | static const char builtin_diff_usage[] = |
b7e10b2c | 33 | "git diff [<options>] [<commit>] [--] [<path>...]\n" |
eb448631 DL |
34 | " or: git diff [<options>] --cached [--merge-base] [<commit>] [--] [<path>...]\n" |
35 | " or: git diff [<options>] [--merge-base] <commit> [<commit>...] <commit> [--] [<path>...]\n" | |
74f3390d SY |
36 | " or: git diff [<options>] <commit>...<commit> [--] [<path>...]\n" |
37 | " or: git diff [<options>] <blob> <blob>\n" | |
acf7828e ÆAB |
38 | " or: git diff [<options>] --no-index [--] <path> <path>" |
39 | "\n" | |
b7e10b2c | 40 | COMMON_DIFF_OPTIONS_HELP; |
65056021 | 41 | |
158b06ca JK |
42 | static const char *blob_path(struct object_array_entry *entry) |
43 | { | |
44 | return entry->path ? entry->path : entry->name; | |
45 | } | |
46 | ||
65056021 JH |
47 | static void stuff_change(struct diff_options *opt, |
48 | unsigned old_mode, unsigned new_mode, | |
9c4b0f66 | 49 | const struct object_id *old_oid, |
50 | const struct object_id *new_oid, | |
51 | int old_oid_valid, | |
52 | int new_oid_valid, | |
d04ec74b JK |
53 | const char *old_path, |
54 | const char *new_path) | |
65056021 JH |
55 | { |
56 | struct diff_filespec *one, *two; | |
57 | ||
9c4b0f66 | 58 | if (!is_null_oid(old_oid) && !is_null_oid(new_oid) && |
4a7e27e9 | 59 | oideq(old_oid, new_oid) && (old_mode == new_mode)) |
65056021 JH |
60 | return; |
61 | ||
0d1e0e78 | 62 | if (opt->flags.reverse_diff) { |
35d803bc | 63 | SWAP(old_mode, new_mode); |
9c4b0f66 | 64 | SWAP(old_oid, new_oid); |
d04ec74b | 65 | SWAP(old_path, new_path); |
65056021 | 66 | } |
cd676a51 JH |
67 | |
68 | if (opt->prefix && | |
d04ec74b JK |
69 | (strncmp(old_path, opt->prefix, opt->prefix_length) || |
70 | strncmp(new_path, opt->prefix, opt->prefix_length))) | |
cd676a51 JH |
71 | return; |
72 | ||
d04ec74b JK |
73 | one = alloc_filespec(old_path); |
74 | two = alloc_filespec(new_path); | |
f9704c2d BW |
75 | fill_filespec(one, old_oid, old_oid_valid, old_mode); |
76 | fill_filespec(two, new_oid, new_oid_valid, new_mode); | |
65056021 | 77 | |
65056021 JH |
78 | diff_queue(&diff_queued_diff, one, two); |
79 | } | |
80 | ||
81 | static int builtin_diff_b_f(struct rev_info *revs, | |
6ba21fa6 | 82 | int argc, const char **argv UNUSED, |
42f5ba5b | 83 | struct object_array_entry **blob) |
65056021 JH |
84 | { |
85 | /* Blob vs file in the working tree*/ | |
86 | struct stat st; | |
887c6c18 | 87 | const char *path; |
65056021 | 88 | |
a610786f TH |
89 | if (argc > 1) |
90 | usage(builtin_diff_usage); | |
91 | ||
887c6c18 NTND |
92 | GUARD_PATHSPEC(&revs->prune_data, PATHSPEC_FROMTOP | PATHSPEC_LITERAL); |
93 | path = revs->prune_data.items[0].match; | |
94 | ||
65056021 | 95 | if (lstat(path, &st)) |
54214529 | 96 | die_errno(_("failed to stat '%s'"), path); |
65056021 | 97 | if (!(S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))) |
54214529 | 98 | die(_("'%s': not a regular file or symlink"), path); |
01618a3a | 99 | |
a5a818ee JH |
100 | diff_set_mnemonic_prefix(&revs->diffopt, "o/", "w/"); |
101 | ||
42f5ba5b JK |
102 | if (blob[0]->mode == S_IFINVALID) |
103 | blob[0]->mode = canon_mode(st.st_mode); | |
01618a3a | 104 | |
65056021 | 105 | stuff_change(&revs->diffopt, |
42f5ba5b | 106 | blob[0]->mode, canon_mode(st.st_mode), |
14228447 | 107 | &blob[0]->item->oid, null_oid(), |
e5450100 | 108 | 1, 0, |
30d005c0 JK |
109 | blob[0]->path ? blob[0]->path : path, |
110 | path); | |
65056021 JH |
111 | diffcore_std(&revs->diffopt); |
112 | diff_flush(&revs->diffopt); | |
113 | return 0; | |
114 | } | |
115 | ||
116 | static int builtin_diff_blobs(struct rev_info *revs, | |
6ba21fa6 | 117 | int argc, const char **argv UNUSED, |
42f5ba5b | 118 | struct object_array_entry **blob) |
65056021 | 119 | { |
33de80b1 | 120 | const unsigned mode = canon_mode(S_IFREG | 0644); |
65056021 | 121 | |
a610786f TH |
122 | if (argc > 1) |
123 | usage(builtin_diff_usage); | |
124 | ||
42f5ba5b JK |
125 | if (blob[0]->mode == S_IFINVALID) |
126 | blob[0]->mode = mode; | |
01618a3a | 127 | |
42f5ba5b JK |
128 | if (blob[1]->mode == S_IFINVALID) |
129 | blob[1]->mode = mode; | |
01618a3a | 130 | |
65056021 | 131 | stuff_change(&revs->diffopt, |
42f5ba5b JK |
132 | blob[0]->mode, blob[1]->mode, |
133 | &blob[0]->item->oid, &blob[1]->item->oid, | |
e5450100 | 134 | 1, 1, |
158b06ca | 135 | blob_path(blob[0]), blob_path(blob[1])); |
65056021 JH |
136 | diffcore_std(&revs->diffopt); |
137 | diff_flush(&revs->diffopt); | |
138 | return 0; | |
139 | } | |
140 | ||
141 | static int builtin_diff_index(struct rev_info *revs, | |
142 | int argc, const char **argv) | |
143 | { | |
4c3fe82e | 144 | unsigned int option = 0; |
65056021 JH |
145 | while (1 < argc) { |
146 | const char *arg = argv[1]; | |
2baf1850 | 147 | if (!strcmp(arg, "--cached") || !strcmp(arg, "--staged")) |
4c3fe82e | 148 | option |= DIFF_INDEX_CACHED; |
0f5a1d44 DL |
149 | else if (!strcmp(arg, "--merge-base")) |
150 | option |= DIFF_INDEX_MERGE_BASE; | |
65056021 JH |
151 | else |
152 | usage(builtin_diff_usage); | |
153 | argv++; argc--; | |
154 | } | |
155 | /* | |
156 | * Make sure there is one revision (i.e. pending object), | |
157 | * and there is no revision filtering parameters. | |
158 | */ | |
1f1e895f | 159 | if (revs->pending.nr != 1 || |
65056021 JH |
160 | revs->max_count != -1 || revs->min_age != -1 || |
161 | revs->max_age != -1) | |
162 | usage(builtin_diff_usage); | |
4c3fe82e | 163 | if (!(option & DIFF_INDEX_CACHED)) { |
7349afd2 | 164 | setup_work_tree(); |
07047d68 ÆAB |
165 | if (repo_read_index_preload(the_repository, |
166 | &revs->diffopt.pathspec, 0) < 0) { | |
167 | perror("repo_read_index_preload"); | |
7349afd2 KB |
168 | return -1; |
169 | } | |
07047d68 ÆAB |
170 | } else if (repo_read_index(the_repository) < 0) { |
171 | perror("repo_read_cache"); | |
b4e1e4a7 JH |
172 | return -1; |
173 | } | |
4c3fe82e | 174 | return run_diff_index(revs, option); |
65056021 JH |
175 | } |
176 | ||
177 | static int builtin_diff_tree(struct rev_info *revs, | |
178 | int argc, const char **argv, | |
91de344d MH |
179 | struct object_array_entry *ent0, |
180 | struct object_array_entry *ent1) | |
65056021 | 181 | { |
9c4b0f66 | 182 | const struct object_id *(oid[2]); |
3d09c228 DL |
183 | struct object_id mb_oid; |
184 | int merge_base = 0; | |
a610786f | 185 | |
3d09c228 DL |
186 | while (1 < argc) { |
187 | const char *arg = argv[1]; | |
188 | if (!strcmp(arg, "--merge-base")) | |
189 | merge_base = 1; | |
190 | else | |
191 | usage(builtin_diff_usage); | |
192 | argv++; argc--; | |
193 | } | |
0fe7c1de | 194 | |
3d09c228 DL |
195 | if (merge_base) { |
196 | diff_get_merge_base(revs, &mb_oid); | |
197 | oid[0] = &mb_oid; | |
198 | oid[1] = &revs->pending.objects[1].item->oid; | |
199 | } else { | |
200 | int swap = 0; | |
201 | ||
202 | /* | |
203 | * We saw two trees, ent0 and ent1. If ent1 is uninteresting, | |
204 | * swap them. | |
205 | */ | |
206 | if (ent1->item->flags & UNINTERESTING) | |
207 | swap = 1; | |
208 | oid[swap] = &ent0->item->oid; | |
209 | oid[1 - swap] = &ent1->item->oid; | |
210 | } | |
66f414f8 | 211 | diff_tree_oid(oid[0], oid[1], "", &revs->diffopt); |
65056021 JH |
212 | log_tree_diff_flush(revs); |
213 | return 0; | |
214 | } | |
215 | ||
0fe7c1de | 216 | static int builtin_diff_combined(struct rev_info *revs, |
6ba21fa6 | 217 | int argc, const char **argv UNUSED, |
1f1e895f | 218 | struct object_array_entry *ent, |
a79c6b60 | 219 | int ents, int first_non_parent) |
0fe7c1de | 220 | { |
910650d2 | 221 | struct oid_array parents = OID_ARRAY_INIT; |
0fe7c1de JH |
222 | int i; |
223 | ||
a610786f TH |
224 | if (argc > 1) |
225 | usage(builtin_diff_usage); | |
226 | ||
a79c6b60 RS |
227 | if (first_non_parent < 0) |
228 | die(_("no merge given, only parents.")); | |
229 | if (first_non_parent >= ents) | |
230 | BUG("first_non_parent out of range: %d", first_non_parent); | |
231 | ||
3b6c17b5 SO |
232 | diff_merges_set_dense_combined_if_unset(revs); |
233 | ||
a79c6b60 RS |
234 | for (i = 0; i < ents; i++) { |
235 | if (i != first_non_parent) | |
236 | oid_array_append(&parents, &ent[i].item->oid); | |
237 | } | |
238 | diff_tree_combined(&ent[first_non_parent].item->oid, &parents, revs); | |
910650d2 | 239 | oid_array_clear(&parents); |
0fe7c1de JH |
240 | return 0; |
241 | } | |
242 | ||
aecbf914 JH |
243 | static void refresh_index_quietly(void) |
244 | { | |
837e34eb | 245 | struct lock_file lock_file = LOCK_INIT; |
aecbf914 JH |
246 | int fd; |
247 | ||
07047d68 | 248 | fd = repo_hold_locked_index(the_repository, &lock_file, 0); |
aecbf914 JH |
249 | if (fd < 0) |
250 | return; | |
07047d68 ÆAB |
251 | discard_index(&the_index); |
252 | repo_read_index(the_repository); | |
253 | refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, | |
254 | NULL); | |
1b0d968b | 255 | repo_update_index_if_able(the_repository, &lock_file); |
aecbf914 JH |
256 | } |
257 | ||
0569e9b8 JH |
258 | static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv) |
259 | { | |
0569e9b8 JH |
260 | unsigned int options = 0; |
261 | ||
262 | while (1 < argc && argv[1][0] == '-') { | |
263 | if (!strcmp(argv[1], "--base")) | |
264 | revs->max_count = 1; | |
265 | else if (!strcmp(argv[1], "--ours")) | |
266 | revs->max_count = 2; | |
267 | else if (!strcmp(argv[1], "--theirs")) | |
268 | revs->max_count = 3; | |
269 | else if (!strcmp(argv[1], "-q")) | |
270 | options |= DIFF_SILENT_ON_REMOVED; | |
1c370ea4 MM |
271 | else if (!strcmp(argv[1], "-h")) |
272 | usage(builtin_diff_usage); | |
0569e9b8 | 273 | else |
54214529 | 274 | return error(_("invalid option: %s"), argv[1]); |
0569e9b8 JH |
275 | argv++; argc--; |
276 | } | |
277 | ||
903e09a3 JH |
278 | /* |
279 | * "diff --base" should not combine merges because it was not | |
280 | * asked to. "diff -c" should not densify (if the user wants | |
281 | * dense one, --cc can be explicitly asked for, or just rely | |
282 | * on the default). | |
283 | */ | |
3b6c17b5 | 284 | if (revs->max_count == -1 && |
0569e9b8 | 285 | (revs->diffopt.output_format & DIFF_FORMAT_PATCH)) |
3b6c17b5 | 286 | diff_merges_set_dense_combined_if_unset(revs); |
0569e9b8 | 287 | |
4f38f6b5 | 288 | setup_work_tree(); |
07047d68 ÆAB |
289 | if (repo_read_index_preload(the_repository, &revs->diffopt.pathspec, |
290 | 0) < 0) { | |
291 | perror("repo_read_index_preload"); | |
0569e9b8 JH |
292 | return -1; |
293 | } | |
e7c3a59c | 294 | return run_diff_files(revs, options); |
0569e9b8 JH |
295 | } |
296 | ||
8bfcb3a6 CT |
297 | struct symdiff { |
298 | struct bitmap *skip; | |
299 | int warn; | |
300 | const char *base, *left, *right; | |
301 | }; | |
302 | ||
303 | /* | |
304 | * Check for symmetric-difference arguments, and if present, arrange | |
305 | * everything we need to know to handle them correctly. As a bonus, | |
306 | * weed out all bogus range-based revision specifications, e.g., | |
307 | * "git diff A..B C..D" or "git diff A..B C" get rejected. | |
308 | * | |
309 | * For an actual symmetric diff, *symdiff is set this way: | |
310 | * | |
311 | * - its skip is non-NULL and marks *all* rev->pending.objects[i] | |
312 | * indices that the caller should ignore (extra merge bases, of | |
313 | * which there might be many, and A in A...B). Note that the | |
314 | * chosen merge base and right side are NOT marked. | |
315 | * - warn is set if there are multiple merge bases. | |
316 | * - base, left, and right point to the names to use in a | |
317 | * warning about multiple merge bases. | |
318 | * | |
319 | * If there is no symmetric diff argument, sym->skip is NULL and | |
320 | * sym->warn is cleared. The remaining fields are not set. | |
321 | */ | |
322 | static void symdiff_prepare(struct rev_info *rev, struct symdiff *sym) | |
323 | { | |
324 | int i, is_symdiff = 0, basecount = 0, othercount = 0; | |
325 | int lpos = -1, rpos = -1, basepos = -1; | |
326 | struct bitmap *map = NULL; | |
327 | ||
328 | /* | |
329 | * Use the whence fields to find merge bases and left and | |
330 | * right parts of symmetric difference, so that we do not | |
331 | * depend on the order that revisions are parsed. If there | |
332 | * are any revs that aren't from these sources, we have a | |
333 | * "git diff C A...B" or "git diff A...B C" case. Or we | |
334 | * could even get "git diff A...B C...E", for instance. | |
335 | * | |
336 | * If we don't have just one merge base, we pick one | |
337 | * at random. | |
338 | * | |
339 | * NB: REV_CMD_LEFT, REV_CMD_RIGHT are also used for A..B, | |
340 | * so we must check for SYMMETRIC_LEFT too. The two arrays | |
341 | * rev->pending.objects and rev->cmdline.rev are parallel. | |
342 | */ | |
343 | for (i = 0; i < rev->cmdline.nr; i++) { | |
344 | struct object *obj = rev->pending.objects[i].item; | |
345 | switch (rev->cmdline.rev[i].whence) { | |
346 | case REV_CMD_MERGE_BASE: | |
347 | if (basepos < 0) | |
348 | basepos = i; | |
349 | basecount++; | |
350 | break; /* do mark all bases */ | |
351 | case REV_CMD_LEFT: | |
352 | if (lpos >= 0) | |
353 | usage(builtin_diff_usage); | |
354 | lpos = i; | |
355 | if (obj->flags & SYMMETRIC_LEFT) { | |
356 | is_symdiff = 1; | |
357 | break; /* do mark A */ | |
358 | } | |
359 | continue; | |
360 | case REV_CMD_RIGHT: | |
361 | if (rpos >= 0) | |
362 | usage(builtin_diff_usage); | |
363 | rpos = i; | |
364 | continue; /* don't mark B */ | |
365 | case REV_CMD_PARENTS_ONLY: | |
366 | case REV_CMD_REF: | |
367 | case REV_CMD_REV: | |
368 | othercount++; | |
369 | continue; | |
370 | } | |
afe8a907 | 371 | if (!map) |
8bfcb3a6 CT |
372 | map = bitmap_new(); |
373 | bitmap_set(map, i); | |
374 | } | |
375 | ||
376 | /* | |
377 | * Forbid any additional revs for both A...B and A..B. | |
378 | */ | |
379 | if (lpos >= 0 && othercount > 0) | |
380 | usage(builtin_diff_usage); | |
381 | ||
382 | if (!is_symdiff) { | |
383 | bitmap_free(map); | |
384 | sym->warn = 0; | |
385 | sym->skip = NULL; | |
386 | return; | |
387 | } | |
388 | ||
389 | sym->left = rev->pending.objects[lpos].name; | |
390 | sym->right = rev->pending.objects[rpos].name; | |
8bfcb3a6 CT |
391 | if (basecount == 0) |
392 | die(_("%s...%s: no merge base"), sym->left, sym->right); | |
5f46e610 | 393 | sym->base = rev->pending.objects[basepos].name; |
8bfcb3a6 CT |
394 | bitmap_unset(map, basepos); /* unmark the base we want */ |
395 | sym->warn = basecount > 1; | |
396 | sym->skip = map; | |
397 | } | |
398 | ||
a633fca0 | 399 | int cmd_diff(int argc, const char **argv, const char *prefix) |
65056021 | 400 | { |
1f1e895f | 401 | int i; |
65056021 | 402 | struct rev_info rev; |
33055fa8 | 403 | struct object_array ent = OBJECT_ARRAY_INIT; |
a79c6b60 | 404 | int first_non_parent = -1; |
33055fa8 | 405 | int blobs = 0, paths = 0; |
42f5ba5b | 406 | struct object_array_entry *blob[2]; |
470faf96 | 407 | int nongit = 0, no_index = 0; |
41bbf9d5 | 408 | int result = 0; |
8bfcb3a6 | 409 | struct symdiff sdiff; |
65056021 JH |
410 | |
411 | /* | |
412 | * We could get N tree-ish in the rev.pending_objects list. | |
a9d7689c DL |
413 | * Also there could be M blobs there, and P pathspecs. --cached may |
414 | * also be present. | |
65056021 JH |
415 | * |
416 | * N=0, M=0: | |
a9d7689c DL |
417 | * cache vs files (diff-files) |
418 | * | |
419 | * N=0, M=0, --cached: | |
420 | * HEAD vs cache (diff-index --cached) | |
421 | * | |
65056021 JH |
422 | * N=0, M=2: |
423 | * compare two random blobs. P must be zero. | |
a9d7689c | 424 | * |
65056021 | 425 | * N=0, M=1, P=1: |
a9d7689c | 426 | * compare a blob with a working tree file. |
65056021 JH |
427 | * |
428 | * N=1, M=0: | |
a9d7689c | 429 | * tree vs files (diff-index) |
65056021 | 430 | * |
a9d7689c | 431 | * N=1, M=0, --cached: |
65056021 JH |
432 | * tree vs cache (diff-index --cached) |
433 | * | |
434 | * N=2, M=0: | |
435 | * tree vs tree (diff-tree) | |
436 | * | |
0569e9b8 JH |
437 | * N=0, M=0, P=2: |
438 | * compare two filesystem entities (aka --no-index). | |
439 | * | |
65056021 JH |
440 | * Other cases are errors. |
441 | */ | |
230f544e | 442 | |
470faf96 TG |
443 | /* Were we asked to do --no-index explicitly? */ |
444 | for (i = 1; i < argc; i++) { | |
445 | if (!strcmp(argv[i], "--")) { | |
446 | i++; | |
447 | break; | |
448 | } | |
449 | if (!strcmp(argv[i], "--no-index")) | |
450 | no_index = DIFF_NO_INDEX_EXPLICIT; | |
451 | if (argv[i][0] != '-') | |
452 | break; | |
453 | } | |
454 | ||
28a4e580 | 455 | prefix = setup_git_directory_gently(&nongit); |
6df5762d | 456 | |
51ba65b5 LD |
457 | if (!nongit) { |
458 | prepare_repo_settings(the_repository); | |
459 | the_repository->settings.command_requires_full_index = 0; | |
460 | } | |
461 | ||
28a4e580 | 462 | if (!no_index) { |
475b362c JK |
463 | /* |
464 | * Treat git diff with at least one path outside of the | |
465 | * repo the same as if the command would have been executed | |
466 | * outside of a git repository. In this case it behaves | |
467 | * the same way as "git diff --no-index <a> <b>", which acts | |
468 | * as a colourful "diff" replacement. | |
469 | */ | |
470 | if (nongit || ((argc == i + 2) && | |
471 | (!path_inside_repo(prefix, argv[i]) || | |
472 | !path_inside_repo(prefix, argv[i + 1])))) | |
473 | no_index = DIFF_NO_INDEX_IMPLICIT; | |
474 | } | |
470faf96 | 475 | |
5404c116 | 476 | init_diff_ui_defaults(); |
ef90d6d4 | 477 | git_config(git_diff_ui_config, NULL); |
5c327502 | 478 | prefix = precompose_argv_prefix(argc, argv, prefix); |
6b2f2d98 | 479 | |
2abf3503 | 480 | repo_init_revisions(the_repository, &rev, prefix); |
0569e9b8 | 481 | |
287ab28b | 482 | /* Set up defaults that will apply to both no-index and regular diffs. */ |
af9fedc1 | 483 | rev.diffopt.stat_width = -1; |
df44483a | 484 | rev.diffopt.stat_graph_width = -1; |
0d1e0e78 BW |
485 | rev.diffopt.flags.allow_external = 1; |
486 | rev.diffopt.flags.allow_textconv = 1; | |
61af494c | 487 | |
287ab28b JK |
488 | /* If this is a no-index diff, just run it and exit there. */ |
489 | if (no_index) | |
dcd6a8c0 JH |
490 | exit(diff_no_index(&rev, no_index == DIFF_NO_INDEX_IMPLICIT, |
491 | argc, argv)); | |
492 | ||
287ab28b JK |
493 | |
494 | /* | |
495 | * Otherwise, we are doing the usual "git" diff; set up any | |
496 | * further defaults that apply to regular diffs. | |
497 | */ | |
498 | rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index; | |
499 | ||
0231ae71 NTND |
500 | /* |
501 | * Default to intent-to-add entries invisible in the | |
502 | * index. This makes them show up as new files in diff-files | |
503 | * and not at all in diff-cached. | |
504 | */ | |
505 | rev.diffopt.ita_invisible_in_index = 1; | |
506 | ||
0569e9b8 | 507 | if (nongit) |
54214529 | 508 | die(_("Not a git repository")); |
0569e9b8 | 509 | argc = setup_revisions(argc, argv, &rev, NULL); |
047fbe90 | 510 | if (!rev.diffopt.output_format) { |
c9b5ef99 | 511 | rev.diffopt.output_format = DIFF_FORMAT_PATCH; |
28452655 | 512 | diff_setup_done(&rev.diffopt); |
047fbe90 | 513 | } |
61af494c | 514 | |
0d1e0e78 | 515 | rev.diffopt.flags.recursive = 1; |
1eb4136a | 516 | rev.diffopt.rotate_to_strict = 1; |
c9b5ef99 | 517 | |
1af3d977 | 518 | setup_diff_pager(&rev.diffopt); |
89d07f75 | 519 | |
0569e9b8 JH |
520 | /* |
521 | * Do we have --cached and not have a pending object, then | |
65056021 JH |
522 | * default to HEAD by hand. Eek. |
523 | */ | |
1f1e895f | 524 | if (!rev.pending.nr) { |
65056021 JH |
525 | int i; |
526 | for (i = 1; i < argc; i++) { | |
527 | const char *arg = argv[i]; | |
528 | if (!strcmp(arg, "--")) | |
529 | break; | |
2baf1850 DS |
530 | else if (!strcmp(arg, "--cached") || |
531 | !strcmp(arg, "--staged")) { | |
3384a2df | 532 | add_head_to_pending(&rev); |
a2b7a3b3 NTND |
533 | if (!rev.pending.nr) { |
534 | struct tree *tree; | |
f86bcc7b SB |
535 | tree = lookup_tree(the_repository, |
536 | the_repository->hash_algo->empty_tree); | |
a2b7a3b3 NTND |
537 | add_pending_object(&rev, &tree->object, "HEAD"); |
538 | } | |
65056021 JH |
539 | break; |
540 | } | |
541 | } | |
542 | } | |
543 | ||
8bfcb3a6 | 544 | symdiff_prepare(&rev, &sdiff); |
1f1e895f | 545 | for (i = 0; i < rev.pending.nr; i++) { |
026f09e7 MH |
546 | struct object_array_entry *entry = &rev.pending.objects[i]; |
547 | struct object *obj = entry->item; | |
548 | const char *name = entry->name; | |
65056021 JH |
549 | int flags = (obj->flags & UNINTERESTING); |
550 | if (!obj->parsed) | |
109cd76d | 551 | obj = parse_object(the_repository, &obj->oid); |
a74093da | 552 | obj = deref_tag(the_repository, obj, NULL, 0); |
65056021 | 553 | if (!obj) |
54214529 | 554 | die(_("invalid object '%s' given."), name); |
1974632c | 555 | if (obj->type == OBJ_COMMIT) |
ecb5091f ÆAB |
556 | obj = &repo_get_commit_tree(the_repository, |
557 | ((struct commit *)obj))->object; | |
5b1e14ea | 558 | |
1974632c | 559 | if (obj->type == OBJ_TREE) { |
8bfcb3a6 CT |
560 | if (sdiff.skip && bitmap_get(sdiff.skip, i)) |
561 | continue; | |
65056021 | 562 | obj->flags |= flags; |
33055fa8 | 563 | add_object_array(obj, name, &ent); |
a79c6b60 RS |
564 | if (first_non_parent < 0 && |
565 | (i >= rev.cmdline.nr || /* HEAD by hand. */ | |
566 | rev.cmdline.rev[i].whence != REV_CMD_PARENTS_ONLY)) | |
567 | first_non_parent = ent.nr - 1; | |
5b1e14ea | 568 | } else if (obj->type == OBJ_BLOB) { |
65056021 | 569 | if (2 <= blobs) |
54214529 | 570 | die(_("more than two blobs given: '%s'"), name); |
42f5ba5b | 571 | blob[blobs] = entry; |
65056021 | 572 | blobs++; |
230f544e | 573 | |
5b1e14ea MH |
574 | } else { |
575 | die(_("unhandled object '%s' given."), name); | |
65056021 | 576 | } |
65056021 | 577 | } |
887c6c18 | 578 | if (rev.prune_data.nr) |
afe069d1 | 579 | paths += rev.prune_data.nr; |
65056021 JH |
580 | |
581 | /* | |
582 | * Now, do the arguments look reasonable? | |
583 | */ | |
33055fa8 | 584 | if (!ent.nr) { |
65056021 JH |
585 | switch (blobs) { |
586 | case 0: | |
0569e9b8 | 587 | result = builtin_diff_files(&rev, argc, argv); |
65056021 JH |
588 | break; |
589 | case 1: | |
590 | if (paths != 1) | |
591 | usage(builtin_diff_usage); | |
887c6c18 | 592 | result = builtin_diff_b_f(&rev, argc, argv, blob); |
65056021 JH |
593 | break; |
594 | case 2: | |
0fe7c1de JH |
595 | if (paths) |
596 | usage(builtin_diff_usage); | |
41bbf9d5 | 597 | result = builtin_diff_blobs(&rev, argc, argv, blob); |
65056021 JH |
598 | break; |
599 | default: | |
600 | usage(builtin_diff_usage); | |
601 | } | |
602 | } | |
603 | else if (blobs) | |
604 | usage(builtin_diff_usage); | |
33055fa8 | 605 | else if (ent.nr == 1) |
41bbf9d5 | 606 | result = builtin_diff_index(&rev, argc, argv); |
8bfcb3a6 CT |
607 | else if (ent.nr == 2) { |
608 | if (sdiff.warn) | |
609 | warning(_("%s...%s: multiple merge bases, using %s"), | |
610 | sdiff.left, sdiff.right, sdiff.base); | |
33055fa8 MH |
611 | result = builtin_diff_tree(&rev, argc, argv, |
612 | &ent.objects[0], &ent.objects[1]); | |
c008c0ff | 613 | } else |
41bbf9d5 | 614 | result = builtin_diff_combined(&rev, argc, argv, |
a79c6b60 RS |
615 | ent.objects, ent.nr, |
616 | first_non_parent); | |
da31b358 | 617 | result = diff_result_code(&rev.diffopt, result); |
aecbf914 JH |
618 | if (1 < rev.diffopt.skip_stat_unmatch) |
619 | refresh_index_quietly(); | |
bf1b32d0 | 620 | release_revisions(&rev); |
ac95f5d3 | 621 | object_array_clear(&ent); |
886e1084 | 622 | UNLEAK(blob); |
41bbf9d5 | 623 | return result; |
65056021 | 624 | } |