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Commit | Line | Data |
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908e5310 | 1 | #include "cache.h" |
b2141fc1 | 2 | #include "config.h" |
697cc8ef | 3 | #include "lockfile.h" |
908e5310 | 4 | #include "commit.h" |
635d4134 | 5 | #include "tag.h" |
908e5310 | 6 | #include "refs.h" |
9a0eaf83 | 7 | #include "builtin.h" |
23615708 | 8 | #include "exec_cmd.h" |
166185be | 9 | #include "parse-options.h" |
9f67d2e8 | 10 | #include "diff.h" |
29d8a834 | 11 | #include "hashmap.h" |
45bc950b | 12 | #include "argv-array.h" |
b0176ce6 | 13 | #include "run-command.h" |
908e5310 | 14 | |
c4472643 | 15 | #define SEEN (1u << 0) |
8713ab30 SP |
16 | #define MAX_TAGS (FLAG_BITS - 1) |
17 | ||
166185be | 18 | static const char * const describe_usage[] = { |
9c9b4f2f AH |
19 | N_("git describe [<options>] [<commit-ish>...]"), |
20 | N_("git describe [<options>] --dirty"), | |
166185be PH |
21 | NULL |
22 | }; | |
908e5310 | 23 | |
8713ab30 | 24 | static int debug; /* Display lots of verbose info */ |
7e425c4f SP |
25 | static int all; /* Any valid ref can be used */ |
26 | static int tags; /* Allow lightweight tags */ | |
518120e3 | 27 | static int longformat; |
e00dd1e9 | 28 | static int first_parent; |
dce96489 | 29 | static int abbrev = -1; /* unspecified */ |
8713ab30 | 30 | static int max_candidates = 10; |
29d8a834 | 31 | static struct hashmap names; |
d1645d02 | 32 | static int have_util; |
43f8080e | 33 | static struct string_list patterns = STRING_LIST_INIT_NODUP; |
77d21f29 | 34 | static struct string_list exclude_patterns = STRING_LIST_INIT_NODUP; |
da2478db | 35 | static int always; |
b0176ce6 | 36 | static const char *suffix, *dirty, *broken; |
9f67d2e8 JP |
37 | |
38 | /* diff-index command arguments to check if working tree is dirty. */ | |
39 | static const char *diff_index_args[] = { | |
40 | "diff-index", "--quiet", "HEAD", "--", NULL | |
41 | }; | |
42 | ||
e7eb5034 | 43 | struct commit_name { |
29d8a834 | 44 | struct hashmap_entry entry; |
6439b5d9 | 45 | struct object_id peeled; |
212945d4 | 46 | struct tag *tag; |
03e8b541 SP |
47 | unsigned prio:2; /* annotated tag = 2, tag = 1, head = 0 */ |
48 | unsigned name_checked:1; | |
6439b5d9 | 49 | struct object_id oid; |
219a0f33 | 50 | char *path; |
e7eb5034 | 51 | }; |
c4472643 | 52 | |
cf69fd49 | 53 | static const char *prio_names[] = { |
646c3bd1 | 54 | N_("head"), N_("lightweight"), N_("annotated"), |
cf69fd49 | 55 | }; |
908e5310 | 56 | |
7663cdc8 SB |
57 | static int commit_name_cmp(const void *unused_cmp_data, |
58 | const struct commit_name *cn1, | |
59 | const struct commit_name *cn2, | |
60 | const void *peeled) | |
29d8a834 | 61 | { |
6439b5d9 | 62 | return oidcmp(&cn1->peeled, peeled ? peeled : &cn2->peeled); |
29d8a834 KB |
63 | } |
64 | ||
6439b5d9 | 65 | static inline struct commit_name *find_commit_name(const struct object_id *peeled) |
3cfa4db3 | 66 | { |
6439b5d9 | 67 | return hashmap_get_from_hash(&names, sha1hash(peeled->hash), peeled->hash); |
d1645d02 AK |
68 | } |
69 | ||
03e8b541 SP |
70 | static int replace_name(struct commit_name *e, |
71 | int prio, | |
6439b5d9 | 72 | const struct object_id *oid, |
03e8b541 SP |
73 | struct tag **tag) |
74 | { | |
75 | if (!e || e->prio < prio) | |
76 | return 1; | |
77 | ||
78 | if (e->prio == 2 && prio == 2) { | |
79 | /* Multiple annotated tags point to the same commit. | |
80 | * Select one to keep based upon their tagger date. | |
81 | */ | |
82 | struct tag *t; | |
83 | ||
84 | if (!e->tag) { | |
d3101b53 | 85 | t = lookup_tag(&e->oid); |
03e8b541 SP |
86 | if (!t || parse_tag(t)) |
87 | return 1; | |
88 | e->tag = t; | |
89 | } | |
90 | ||
d3101b53 | 91 | t = lookup_tag(oid); |
03e8b541 SP |
92 | if (!t || parse_tag(t)) |
93 | return 0; | |
94 | *tag = t; | |
95 | ||
96 | if (e->tag->date < t->date) | |
97 | return 1; | |
98 | } | |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
64deb858 | 103 | static void add_to_known_names(const char *path, |
6439b5d9 | 104 | const struct object_id *peeled, |
212945d4 | 105 | int prio, |
6439b5d9 | 106 | const struct object_id *oid) |
908e5310 | 107 | { |
3cfa4db3 | 108 | struct commit_name *e = find_commit_name(peeled); |
03e8b541 | 109 | struct tag *tag = NULL; |
6439b5d9 | 110 | if (replace_name(e, prio, oid, &tag)) { |
1e1ade18 AK |
111 | if (!e) { |
112 | e = xmalloc(sizeof(struct commit_name)); | |
6439b5d9 | 113 | oidcpy(&e->peeled, peeled); |
114 | hashmap_entry_init(e, sha1hash(peeled->hash)); | |
29d8a834 | 115 | hashmap_add(&names, e); |
219a0f33 | 116 | e->path = NULL; |
1e1ade18 | 117 | } |
03e8b541 | 118 | e->tag = tag; |
e7eb5034 | 119 | e->prio = prio; |
03e8b541 | 120 | e->name_checked = 0; |
6439b5d9 | 121 | oidcpy(&e->oid, oid); |
219a0f33 MH |
122 | free(e->path); |
123 | e->path = xstrdup(path); | |
908e5310 | 124 | } |
908e5310 LT |
125 | } |
126 | ||
99a2cfbf | 127 | static int get_name(const char *path, const struct object_id *oid, int flag, void *cb_data) |
908e5310 | 128 | { |
59556548 | 129 | int is_tag = starts_with(path, "refs/tags/"); |
99a2cfbf | 130 | struct object_id peeled; |
46e1d6eb | 131 | int is_annotated, prio; |
feededd0 | 132 | |
46e1d6eb JH |
133 | /* Reject anything outside refs/tags/ unless --all */ |
134 | if (!all && !is_tag) | |
8a5a1884 SP |
135 | return 0; |
136 | ||
77d21f29 JK |
137 | /* |
138 | * If we're given exclude patterns, first exclude any tag which match | |
139 | * any of the exclude pattern. | |
140 | */ | |
141 | if (exclude_patterns.nr) { | |
142 | struct string_list_item *item; | |
143 | ||
144 | if (!is_tag) | |
145 | return 0; | |
146 | ||
147 | for_each_string_list_item(item, &exclude_patterns) { | |
55d34269 | 148 | if (!wildmatch(item->string, path + 10, 0)) |
77d21f29 JK |
149 | return 0; |
150 | } | |
151 | } | |
152 | ||
43f8080e JK |
153 | /* |
154 | * If we're given patterns, accept only tags which match at least one | |
155 | * pattern. | |
156 | */ | |
157 | if (patterns.nr) { | |
da769d29 | 158 | int found = 0; |
43f8080e JK |
159 | struct string_list_item *item; |
160 | ||
161 | if (!is_tag) | |
162 | return 0; | |
163 | ||
164 | for_each_string_list_item(item, &patterns) { | |
501ec0da | 165 | if (!wildmatch(item->string, path + 10, 0)) { |
da769d29 | 166 | found = 1; |
43f8080e | 167 | break; |
da769d29 MK |
168 | } |
169 | } | |
43f8080e | 170 | |
da769d29 | 171 | if (!found) |
43f8080e | 172 | return 0; |
43f8080e | 173 | } |
46e1d6eb JH |
174 | |
175 | /* Is it annotated? */ | |
99a2cfbf MH |
176 | if (!peel_ref(path, peeled.hash)) { |
177 | is_annotated = !!oidcmp(oid, &peeled); | |
feededd0 | 178 | } else { |
99a2cfbf | 179 | oidcpy(&peeled, oid); |
46e1d6eb | 180 | is_annotated = 0; |
feededd0 | 181 | } |
64deb858 | 182 | |
46e1d6eb JH |
183 | /* |
184 | * By default, we only use annotated tags, but with --tags | |
185 | * we fall back to lightweight ones (even without --tags, | |
186 | * we still remember lightweight ones, only to give hints | |
187 | * in an error message). --all allows any refs to be used. | |
2d9e7c9f | 188 | */ |
46e1d6eb JH |
189 | if (is_annotated) |
190 | prio = 2; | |
191 | else if (is_tag) | |
192 | prio = 1; | |
64deb858 JH |
193 | else |
194 | prio = 0; | |
195 | ||
6439b5d9 | 196 | add_to_known_names(all ? path + 5 : path + 10, &peeled, prio, oid); |
908e5310 LT |
197 | return 0; |
198 | } | |
199 | ||
80dbae03 | 200 | struct possible_tag { |
80dbae03 | 201 | struct commit_name *name; |
cf69fd49 SP |
202 | int depth; |
203 | int found_order; | |
8713ab30 | 204 | unsigned flag_within; |
80dbae03 SP |
205 | }; |
206 | ||
cf69fd49 SP |
207 | static int compare_pt(const void *a_, const void *b_) |
208 | { | |
209 | struct possible_tag *a = (struct possible_tag *)a_; | |
210 | struct possible_tag *b = (struct possible_tag *)b_; | |
cf69fd49 SP |
211 | if (a->depth != b->depth) |
212 | return a->depth - b->depth; | |
213 | if (a->found_order != b->found_order) | |
214 | return a->found_order - b->found_order; | |
215 | return 0; | |
216 | } | |
217 | ||
1b600e65 SP |
218 | static unsigned long finish_depth_computation( |
219 | struct commit_list **list, | |
220 | struct possible_tag *best) | |
221 | { | |
222 | unsigned long seen_commits = 0; | |
223 | while (*list) { | |
224 | struct commit *c = pop_commit(list); | |
225 | struct commit_list *parents = c->parents; | |
226 | seen_commits++; | |
227 | if (c->object.flags & best->flag_within) { | |
228 | struct commit_list *a = *list; | |
229 | while (a) { | |
230 | struct commit *i = a->item; | |
231 | if (!(i->object.flags & best->flag_within)) | |
232 | break; | |
233 | a = a->next; | |
234 | } | |
235 | if (!a) | |
236 | break; | |
237 | } else | |
238 | best->depth++; | |
239 | while (parents) { | |
240 | struct commit *p = parents->item; | |
241 | parse_commit(p); | |
242 | if (!(p->object.flags & SEEN)) | |
47e44ed1 | 243 | commit_list_insert_by_date(p, list); |
1b600e65 SP |
244 | p->object.flags |= c->object.flags; |
245 | parents = parents->next; | |
246 | } | |
247 | } | |
248 | return seen_commits; | |
249 | } | |
250 | ||
212945d4 SP |
251 | static void display_name(struct commit_name *n) |
252 | { | |
253 | if (n->prio == 2 && !n->tag) { | |
d3101b53 | 254 | n->tag = lookup_tag(&n->oid); |
03e8b541 | 255 | if (!n->tag || parse_tag(n->tag)) |
e41f1cb3 | 256 | die(_("annotated tag %s not available"), n->path); |
03e8b541 SP |
257 | } |
258 | if (n->tag && !n->name_checked) { | |
259 | if (!n->tag->tag) | |
e41f1cb3 | 260 | die(_("annotated tag %s has no embedded name"), n->path); |
81dc223d | 261 | if (strcmp(n->tag->tag, all ? n->path + 5 : n->path)) |
e41f1cb3 | 262 | warning(_("tag '%s' is really '%s' here"), n->tag->tag, n->path); |
03e8b541 | 263 | n->name_checked = 1; |
212945d4 SP |
264 | } |
265 | ||
266 | if (n->tag) | |
267 | printf("%s", n->tag->tag); | |
268 | else | |
269 | printf("%s", n->path); | |
870cf7d6 JH |
270 | } |
271 | ||
6439b5d9 | 272 | static void show_suffix(int depth, const struct object_id *oid) |
870cf7d6 | 273 | { |
6439b5d9 | 274 | printf("-%d-g%s", depth, find_unique_abbrev(oid->hash, abbrev)); |
212945d4 SP |
275 | } |
276 | ||
554fe20d | 277 | static void describe(const char *arg, int last_one) |
908e5310 | 278 | { |
6439b5d9 | 279 | struct object_id oid; |
8713ab30 | 280 | struct commit *cmit, *gave_up_on = NULL; |
908e5310 | 281 | struct commit_list *list; |
908e5310 | 282 | struct commit_name *n; |
cf69fd49 | 283 | struct possible_tag all_matches[MAX_TAGS]; |
8713ab30 SP |
284 | unsigned int match_cnt = 0, annotated_cnt = 0, cur_match; |
285 | unsigned long seen_commits = 0; | |
4d23660e | 286 | unsigned int unannotated_cnt = 0; |
908e5310 | 287 | |
6439b5d9 | 288 | if (get_oid(arg, &oid)) |
e41f1cb3 | 289 | die(_("Not a valid object name %s"), arg); |
bc83266a | 290 | cmit = lookup_commit_reference(&oid); |
4c34a2c5 | 291 | if (!cmit) |
e41f1cb3 | 292 | die(_("%s is not a valid '%s' object"), arg, commit_type); |
4c34a2c5 | 293 | |
6439b5d9 | 294 | n = find_commit_name(&cmit->object.oid); |
7a0d61bb | 295 | if (n && (tags || all || n->prio == 2)) { |
870cf7d6 JH |
296 | /* |
297 | * Exact match to an existing ref. | |
298 | */ | |
212945d4 | 299 | display_name(n); |
870cf7d6 | 300 | if (longformat) |
6439b5d9 | 301 | show_suffix(0, n->tag ? &n->tag->tagged->oid : &oid); |
b0176ce6 SB |
302 | if (suffix) |
303 | printf("%s", suffix); | |
212945d4 | 304 | printf("\n"); |
908e5310 LT |
305 | return; |
306 | } | |
307 | ||
2c33f757 | 308 | if (!max_candidates) |
f2fd0760 | 309 | die(_("no tag exactly matches '%s'"), oid_to_hex(&cmit->object.oid)); |
8713ab30 | 310 | if (debug) |
e41f1cb3 | 311 | fprintf(stderr, _("searching to describe %s\n"), arg); |
8713ab30 | 312 | |
d1645d02 | 313 | if (!have_util) { |
29d8a834 KB |
314 | struct hashmap_iter iter; |
315 | struct commit *c; | |
316 | struct commit_name *n = hashmap_iter_first(&names, &iter); | |
317 | for (; n; n = hashmap_iter_next(&iter)) { | |
bc83266a | 318 | c = lookup_commit_reference_gently(&n->peeled, 1); |
29d8a834 KB |
319 | if (c) |
320 | c->util = n; | |
321 | } | |
d1645d02 AK |
322 | have_util = 1; |
323 | } | |
324 | ||
908e5310 | 325 | list = NULL; |
8713ab30 | 326 | cmit->object.flags = SEEN; |
908e5310 LT |
327 | commit_list_insert(cmit, &list); |
328 | while (list) { | |
80dbae03 | 329 | struct commit *c = pop_commit(&list); |
dccd0c2a | 330 | struct commit_list *parents = c->parents; |
8713ab30 | 331 | seen_commits++; |
e7eb5034 | 332 | n = c->util; |
908e5310 | 333 | if (n) { |
4d23660e TR |
334 | if (!tags && !all && n->prio < 2) { |
335 | unannotated_cnt++; | |
336 | } else if (match_cnt < max_candidates) { | |
8713ab30 SP |
337 | struct possible_tag *t = &all_matches[match_cnt++]; |
338 | t->name = n; | |
339 | t->depth = seen_commits - 1; | |
340 | t->flag_within = 1u << match_cnt; | |
8a8169c0 | 341 | t->found_order = match_cnt; |
8713ab30 SP |
342 | c->object.flags |= t->flag_within; |
343 | if (n->prio == 2) | |
344 | annotated_cnt++; | |
345 | } | |
346 | else { | |
347 | gave_up_on = c; | |
348 | break; | |
349 | } | |
350 | } | |
351 | for (cur_match = 0; cur_match < match_cnt; cur_match++) { | |
352 | struct possible_tag *t = &all_matches[cur_match]; | |
353 | if (!(c->object.flags & t->flag_within)) | |
354 | t->depth++; | |
355 | } | |
356 | if (annotated_cnt && !list) { | |
357 | if (debug) | |
e41f1cb3 | 358 | fprintf(stderr, _("finished search at %s\n"), |
f2fd0760 | 359 | oid_to_hex(&c->object.oid)); |
8713ab30 | 360 | break; |
dccd0c2a SP |
361 | } |
362 | while (parents) { | |
363 | struct commit *p = parents->item; | |
364 | parse_commit(p); | |
8713ab30 | 365 | if (!(p->object.flags & SEEN)) |
47e44ed1 | 366 | commit_list_insert_by_date(p, &list); |
8713ab30 | 367 | p->object.flags |= c->object.flags; |
dccd0c2a | 368 | parents = parents->next; |
e00dd1e9 MC |
369 | |
370 | if (first_parent) | |
371 | break; | |
80dbae03 SP |
372 | } |
373 | } | |
374 | ||
da2478db | 375 | if (!match_cnt) { |
f2fd0760 | 376 | struct object_id *oid = &cmit->object.oid; |
da2478db | 377 | if (always) { |
f2fd0760 | 378 | printf("%s", find_unique_abbrev(oid->hash, abbrev)); |
b0176ce6 SB |
379 | if (suffix) |
380 | printf("%s", suffix); | |
9f67d2e8 | 381 | printf("\n"); |
da2478db JH |
382 | return; |
383 | } | |
4d23660e | 384 | if (unannotated_cnt) |
e41f1cb3 ÆAB |
385 | die(_("No annotated tags can describe '%s'.\n" |
386 | "However, there were unannotated tags: try --tags."), | |
f2fd0760 | 387 | oid_to_hex(oid)); |
4d23660e | 388 | else |
e41f1cb3 ÆAB |
389 | die(_("No tags can describe '%s'.\n" |
390 | "Try --always, or create some tags."), | |
f2fd0760 | 391 | oid_to_hex(oid)); |
da2478db | 392 | } |
80dbae03 | 393 | |
9ed0d8d6 | 394 | QSORT(all_matches, match_cnt, compare_pt); |
1b600e65 SP |
395 | |
396 | if (gave_up_on) { | |
47e44ed1 | 397 | commit_list_insert_by_date(gave_up_on, &list); |
1b600e65 SP |
398 | seen_commits--; |
399 | } | |
400 | seen_commits += finish_depth_computation(&list, &all_matches[0]); | |
401 | free_commit_list(list); | |
402 | ||
8713ab30 | 403 | if (debug) { |
646c3bd1 MG |
404 | static int label_width = -1; |
405 | if (label_width < 0) { | |
406 | int i, w; | |
407 | for (i = 0; i < ARRAY_SIZE(prio_names); i++) { | |
408 | w = strlen(_(prio_names[i])); | |
409 | if (label_width < w) | |
410 | label_width = w; | |
411 | } | |
412 | } | |
8713ab30 SP |
413 | for (cur_match = 0; cur_match < match_cnt; cur_match++) { |
414 | struct possible_tag *t = &all_matches[cur_match]; | |
646c3bd1 MG |
415 | fprintf(stderr, " %-*s %8d %s\n", |
416 | label_width, _(prio_names[t->name->prio]), | |
8713ab30 SP |
417 | t->depth, t->name->path); |
418 | } | |
e41f1cb3 | 419 | fprintf(stderr, _("traversed %lu commits\n"), seen_commits); |
8713ab30 SP |
420 | if (gave_up_on) { |
421 | fprintf(stderr, | |
e41f1cb3 ÆAB |
422 | _("more than %i tags found; listed %i most recent\n" |
423 | "gave up search at %s\n"), | |
8713ab30 | 424 | max_candidates, max_candidates, |
f2fd0760 | 425 | oid_to_hex(&gave_up_on->object.oid)); |
8713ab30 | 426 | } |
80dbae03 | 427 | } |
212945d4 SP |
428 | |
429 | display_name(all_matches[0].name); | |
430 | if (abbrev) | |
6439b5d9 | 431 | show_suffix(all_matches[0].depth, &cmit->object.oid); |
b0176ce6 SB |
432 | if (suffix) |
433 | printf("%s", suffix); | |
212945d4 | 434 | printf("\n"); |
80dbae03 | 435 | |
8713ab30 SP |
436 | if (!last_one) |
437 | clear_commit_marks(cmit, -1); | |
908e5310 LT |
438 | } |
439 | ||
9a0eaf83 | 440 | int cmd_describe(int argc, const char **argv, const char *prefix) |
908e5310 | 441 | { |
23615708 | 442 | int contains = 0; |
166185be | 443 | struct option options[] = { |
d5d09d47 SB |
444 | OPT_BOOL(0, "contains", &contains, N_("find the tag that comes after the commit")), |
445 | OPT_BOOL(0, "debug", &debug, N_("debug search strategy on stderr")), | |
446 | OPT_BOOL(0, "all", &all, N_("use any ref")), | |
447 | OPT_BOOL(0, "tags", &tags, N_("use any tag, even unannotated")), | |
448 | OPT_BOOL(0, "long", &longformat, N_("always use long format")), | |
449 | OPT_BOOL(0, "first-parent", &first_parent, N_("only follow first parent")), | |
166185be | 450 | OPT__ABBREV(&abbrev), |
2c33f757 | 451 | OPT_SET_INT(0, "exact-match", &max_candidates, |
bfb0737d | 452 | N_("only output exact matches"), 0), |
166185be | 453 | OPT_INTEGER(0, "candidates", &max_candidates, |
bfb0737d | 454 | N_("consider <n> most recent tags (default: 10)")), |
43f8080e | 455 | OPT_STRING_LIST(0, "match", &patterns, N_("pattern"), |
bfb0737d | 456 | N_("only consider tags matching <pattern>")), |
77d21f29 JK |
457 | OPT_STRING_LIST(0, "exclude", &exclude_patterns, N_("pattern"), |
458 | N_("do not consider tags matching <pattern>")), | |
d5d09d47 SB |
459 | OPT_BOOL(0, "always", &always, |
460 | N_("show abbreviated commit object as fallback")), | |
bfb0737d | 461 | {OPTION_STRING, 0, "dirty", &dirty, N_("mark"), |
d5d09d47 SB |
462 | N_("append <mark> on dirty working tree (default: \"-dirty\")"), |
463 | PARSE_OPT_OPTARG, NULL, (intptr_t) "-dirty"}, | |
b0176ce6 SB |
464 | {OPTION_STRING, 0, "broken", &broken, N_("mark"), |
465 | N_("append <mark> on broken working tree (default: \"-broken\")"), | |
466 | PARSE_OPT_OPTARG, NULL, (intptr_t) "-broken"}, | |
166185be PH |
467 | OPT_END(), |
468 | }; | |
908e5310 | 469 | |
dce96489 | 470 | git_config(git_default_config, NULL); |
37782920 | 471 | argc = parse_options(argc, argv, prefix, options, describe_usage, 0); |
dce96489 LT |
472 | if (abbrev < 0) |
473 | abbrev = DEFAULT_ABBREV; | |
474 | ||
2c33f757 SP |
475 | if (max_candidates < 0) |
476 | max_candidates = 0; | |
166185be PH |
477 | else if (max_candidates > MAX_TAGS) |
478 | max_candidates = MAX_TAGS; | |
4c34a2c5 | 479 | |
8c599c74 | 480 | save_commit_buffer = 0; |
8112894d | 481 | |
518120e3 | 482 | if (longformat && abbrev == 0) |
e41f1cb3 | 483 | die(_("--long is incompatible with --abbrev=0")); |
518120e3 | 484 | |
23615708 | 485 | if (contains) { |
43f8080e | 486 | struct string_list_item *item; |
45bc950b JH |
487 | struct argv_array args; |
488 | ||
489 | argv_array_init(&args); | |
adfc1857 JH |
490 | argv_array_pushl(&args, "name-rev", |
491 | "--peel-tag", "--name-only", "--no-undefined", | |
45bc950b | 492 | NULL); |
da2478db | 493 | if (always) |
45bc950b | 494 | argv_array_push(&args, "--always"); |
30ffa603 | 495 | if (!all) { |
45bc950b | 496 | argv_array_push(&args, "--tags"); |
43f8080e JK |
497 | for_each_string_list_item(item, &patterns) |
498 | argv_array_pushf(&args, "--refs=refs/tags/%s", item->string); | |
77d21f29 JK |
499 | for_each_string_list_item(item, &exclude_patterns) |
500 | argv_array_pushf(&args, "--exclude=refs/tags/%s", item->string); | |
45bc950b | 501 | } |
2bd07065 SG |
502 | if (argc) |
503 | argv_array_pushv(&args, argv); | |
504 | else | |
505 | argv_array_push(&args, "HEAD"); | |
45bc950b | 506 | return cmd_name_rev(args.argc, args.argv, prefix); |
23615708 SP |
507 | } |
508 | ||
7663cdc8 | 509 | hashmap_init(&names, (hashmap_cmp_fn) commit_name_cmp, NULL, 0); |
99a2cfbf | 510 | for_each_rawref(get_name, NULL); |
29d8a834 | 511 | if (!names.size && !always) |
e41f1cb3 | 512 | die(_("No names found, cannot describe anything.")); |
fb423da0 | 513 | |
166185be | 514 | if (argc == 0) { |
b0176ce6 SB |
515 | if (broken) { |
516 | struct child_process cp = CHILD_PROCESS_INIT; | |
517 | argv_array_pushv(&cp.args, diff_index_args); | |
518 | cp.git_cmd = 1; | |
519 | cp.no_stdin = 1; | |
520 | cp.no_stdout = 1; | |
521 | ||
522 | if (!dirty) | |
523 | dirty = "-dirty"; | |
524 | ||
525 | switch (run_command(&cp)) { | |
526 | case 0: | |
527 | suffix = NULL; | |
528 | break; | |
529 | case 1: | |
530 | suffix = dirty; | |
531 | break; | |
532 | default: | |
533 | /* diff-index aborted abnormally */ | |
534 | suffix = broken; | |
535 | } | |
536 | } else if (dirty) { | |
bb571486 AC |
537 | static struct lock_file index_lock; |
538 | int fd; | |
539 | ||
540 | read_cache_preload(NULL); | |
541 | refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, | |
542 | NULL, NULL, NULL); | |
543 | fd = hold_locked_index(&index_lock, 0); | |
544 | if (0 <= fd) | |
545 | update_index_if_able(&the_index, &index_lock); | |
546 | ||
547 | if (!cmd_diff_index(ARRAY_SIZE(diff_index_args) - 1, | |
548 | diff_index_args, prefix)) | |
b0176ce6 SB |
549 | suffix = NULL; |
550 | else | |
551 | suffix = dirty; | |
bb571486 | 552 | } |
fec9ebf1 | 553 | describe("HEAD", 1); |
9f67d2e8 | 554 | } else if (dirty) { |
a8a5406a | 555 | die(_("--dirty is incompatible with commit-ishes")); |
b0176ce6 SB |
556 | } else if (broken) { |
557 | die(_("--broken is incompatible with commit-ishes")); | |
166185be | 558 | } else { |
c4472643 | 559 | while (argc-- > 0) |
166185be | 560 | describe(*argv++, argc == 0); |
166185be | 561 | } |
908e5310 LT |
562 | return 0; |
563 | } |