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Commit | Line | Data |
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f76412ed JH |
1 | #include "cache.h" |
2 | #include "commit.h" | |
3 | #include "refs.h" | |
51ce34b9 | 4 | #include "builtin.h" |
ab07ba2a | 5 | #include "color.h" |
57343652 | 6 | #include "parse-options.h" |
f76412ed | 7 | |
57343652 | 8 | static const char* show_branch_usage[] = { |
d780bef4 NTND |
9 | N_("git show-branch [-a|--all] [-r|--remotes] [--topo-order | --date-order] [--current] [--color[=<when>] | --no-color] [--sparse] [--more=<n> | --list | --independent | --merge-base] [--no-name | --sha1-name] [--topics] [(<rev> | <glob>)...]"), |
10 | N_("git show-branch (-g|--reflog)[=<n>[,<base>]] [--list] [<ref>]"), | |
57343652 SB |
11 | NULL |
12 | }; | |
f76412ed | 13 | |
ab07ba2a | 14 | static int showbranch_use_color = -1; |
ab07ba2a | 15 | |
96f1e58f DR |
16 | static int default_num; |
17 | static int default_alloc; | |
18 | static const char **default_arg; | |
c2bdd6af | 19 | |
f76412ed JH |
20 | #define UNINTERESTING 01 |
21 | ||
22 | #define REV_SHIFT 2 | |
885a86ab | 23 | #define MAX_REVS (FLAG_BITS - REV_SHIFT) /* should not exceed bits_per_int - REV_SHIFT */ |
f76412ed | 24 | |
7e3fe904 JH |
25 | #define DEFAULT_REFLOG 4 |
26 | ||
ab07ba2a MH |
27 | static const char *get_color_code(int idx) |
28 | { | |
daa0c3d9 | 29 | if (want_color(showbranch_use_color)) |
7cd52b5b | 30 | return column_colors_ansi[idx % column_colors_ansi_max]; |
ab07ba2a MH |
31 | return ""; |
32 | } | |
33 | ||
34 | static const char *get_color_reset_code(void) | |
35 | { | |
daa0c3d9 | 36 | if (want_color(showbranch_use_color)) |
ab07ba2a MH |
37 | return GIT_COLOR_RESET; |
38 | return ""; | |
39 | } | |
40 | ||
f76412ed JH |
41 | static struct commit *interesting(struct commit_list *list) |
42 | { | |
43 | while (list) { | |
44 | struct commit *commit = list->item; | |
45 | list = list->next; | |
46 | if (commit->object.flags & UNINTERESTING) | |
47 | continue; | |
48 | return commit; | |
49 | } | |
50 | return NULL; | |
51 | } | |
52 | ||
53 | static struct commit *pop_one_commit(struct commit_list **list_p) | |
54 | { | |
55 | struct commit *commit; | |
56 | struct commit_list *list; | |
57 | list = *list_p; | |
58 | commit = list->item; | |
59 | *list_p = list->next; | |
60 | free(list); | |
61 | return commit; | |
62 | } | |
63 | ||
64 | struct commit_name { | |
8e5dd22b JH |
65 | const char *head_name; /* which head's ancestor? */ |
66 | int generation; /* how many parents away from head_name */ | |
f76412ed JH |
67 | }; |
68 | ||
8e5dd22b | 69 | /* Name the commit as nth generation ancestor of head_name; |
f76412ed JH |
70 | * we count only the first-parent relationship for naming purposes. |
71 | */ | |
8e5dd22b | 72 | static void name_commit(struct commit *commit, const char *head_name, int nth) |
f76412ed JH |
73 | { |
74 | struct commit_name *name; | |
d3ff6f55 LT |
75 | if (!commit->util) |
76 | commit->util = xmalloc(sizeof(struct commit_name)); | |
77 | name = commit->util; | |
8e5dd22b | 78 | name->head_name = head_name; |
f76412ed JH |
79 | name->generation = nth; |
80 | } | |
81 | ||
82 | /* Parent is the first parent of the commit. We may name it | |
8e5dd22b | 83 | * as (n+1)th generation ancestor of the same head_name as |
bcaf60b2 | 84 | * commit is nth generation ancestor of, if that generation |
f76412ed JH |
85 | * number is better than the name it already has. |
86 | */ | |
87 | static void name_parent(struct commit *commit, struct commit *parent) | |
88 | { | |
d3ff6f55 LT |
89 | struct commit_name *commit_name = commit->util; |
90 | struct commit_name *parent_name = parent->util; | |
f76412ed JH |
91 | if (!commit_name) |
92 | return; | |
93 | if (!parent_name || | |
94 | commit_name->generation + 1 < parent_name->generation) | |
8e5dd22b | 95 | name_commit(parent, commit_name->head_name, |
f76412ed JH |
96 | commit_name->generation + 1); |
97 | } | |
98 | ||
8e5dd22b JH |
99 | static int name_first_parent_chain(struct commit *c) |
100 | { | |
101 | int i = 0; | |
102 | while (c) { | |
103 | struct commit *p; | |
d3ff6f55 | 104 | if (!c->util) |
8e5dd22b JH |
105 | break; |
106 | if (!c->parents) | |
107 | break; | |
108 | p = c->parents->item; | |
d3ff6f55 | 109 | if (!p->util) { |
8e5dd22b JH |
110 | name_parent(c, p); |
111 | i++; | |
112 | } | |
f8263c53 AJ |
113 | else |
114 | break; | |
8e5dd22b JH |
115 | c = p; |
116 | } | |
117 | return i; | |
118 | } | |
119 | ||
120 | static void name_commits(struct commit_list *list, | |
121 | struct commit **rev, | |
122 | char **ref_name, | |
123 | int num_rev) | |
124 | { | |
125 | struct commit_list *cl; | |
126 | struct commit *c; | |
127 | int i; | |
128 | ||
129 | /* First give names to the given heads */ | |
130 | for (cl = list; cl; cl = cl->next) { | |
131 | c = cl->item; | |
d3ff6f55 | 132 | if (c->util) |
8e5dd22b JH |
133 | continue; |
134 | for (i = 0; i < num_rev; i++) { | |
135 | if (rev[i] == c) { | |
136 | name_commit(c, ref_name[i], 0); | |
137 | break; | |
138 | } | |
139 | } | |
140 | } | |
141 | ||
142 | /* Then commits on the first parent ancestry chain */ | |
143 | do { | |
144 | i = 0; | |
145 | for (cl = list; cl; cl = cl->next) { | |
146 | i += name_first_parent_chain(cl->item); | |
147 | } | |
148 | } while (i); | |
149 | ||
150 | /* Finally, any unnamed commits */ | |
151 | do { | |
152 | i = 0; | |
153 | for (cl = list; cl; cl = cl->next) { | |
154 | struct commit_list *parents; | |
155 | struct commit_name *n; | |
156 | int nth; | |
157 | c = cl->item; | |
d3ff6f55 | 158 | if (!c->util) |
8e5dd22b | 159 | continue; |
d3ff6f55 | 160 | n = c->util; |
8e5dd22b JH |
161 | parents = c->parents; |
162 | nth = 0; | |
163 | while (parents) { | |
164 | struct commit *p = parents->item; | |
aaa07e3e | 165 | struct strbuf newname = STRBUF_INIT; |
8e5dd22b JH |
166 | parents = parents->next; |
167 | nth++; | |
d3ff6f55 | 168 | if (p->util) |
8e5dd22b | 169 | continue; |
fbaf834d JH |
170 | switch (n->generation) { |
171 | case 0: | |
aaa07e3e | 172 | strbuf_addstr(&newname, n->head_name); |
fbaf834d JH |
173 | break; |
174 | case 1: | |
aaa07e3e | 175 | strbuf_addf(&newname, "%s^", n->head_name); |
fbaf834d JH |
176 | break; |
177 | default: | |
aaa07e3e JK |
178 | strbuf_addf(&newname, "%s~%d", |
179 | n->head_name, n->generation); | |
013f276e | 180 | break; |
fbaf834d | 181 | } |
013f276e | 182 | if (nth == 1) |
aaa07e3e | 183 | strbuf_addch(&newname, '^'); |
013f276e | 184 | else |
aaa07e3e JK |
185 | strbuf_addf(&newname, "^%d", nth); |
186 | name_commit(p, strbuf_detach(&newname, NULL), 0); | |
8e5dd22b JH |
187 | i++; |
188 | name_first_parent_chain(p); | |
189 | } | |
190 | } | |
191 | } while (i); | |
192 | } | |
193 | ||
f76412ed JH |
194 | static int mark_seen(struct commit *commit, struct commit_list **seen_p) |
195 | { | |
196 | if (!commit->object.flags) { | |
26a8ad25 | 197 | commit_list_insert(commit, seen_p); |
f76412ed JH |
198 | return 1; |
199 | } | |
200 | return 0; | |
201 | } | |
202 | ||
203 | static void join_revs(struct commit_list **list_p, | |
204 | struct commit_list **seen_p, | |
205 | int num_rev, int extra) | |
206 | { | |
207 | int all_mask = ((1u << (REV_SHIFT + num_rev)) - 1); | |
208 | int all_revs = all_mask & ~((1u << REV_SHIFT) - 1); | |
209 | ||
210 | while (*list_p) { | |
211 | struct commit_list *parents; | |
9ce70285 | 212 | int still_interesting = !!interesting(*list_p); |
f76412ed JH |
213 | struct commit *commit = pop_one_commit(list_p); |
214 | int flags = commit->object.flags & all_mask; | |
f76412ed | 215 | |
9ce70285 | 216 | if (!still_interesting && extra <= 0) |
f76412ed JH |
217 | break; |
218 | ||
219 | mark_seen(commit, seen_p); | |
220 | if ((flags & all_revs) == all_revs) | |
221 | flags |= UNINTERESTING; | |
222 | parents = commit->parents; | |
223 | ||
224 | while (parents) { | |
225 | struct commit *p = parents->item; | |
226 | int this_flag = p->object.flags; | |
227 | parents = parents->next; | |
f76412ed JH |
228 | if ((this_flag & flags) == flags) |
229 | continue; | |
6b209d47 JH |
230 | if (!p->object.parsed) |
231 | parse_commit(p); | |
f76412ed JH |
232 | if (mark_seen(p, seen_p) && !still_interesting) |
233 | extra--; | |
234 | p->object.flags |= flags; | |
47e44ed1 | 235 | commit_list_insert_by_date(p, list_p); |
f76412ed JH |
236 | } |
237 | } | |
6b209d47 JH |
238 | |
239 | /* | |
240 | * Postprocess to complete well-poisoning. | |
241 | * | |
242 | * At this point we have all the commits we have seen in | |
26a8ad25 JH |
243 | * seen_p list. Mark anything that can be reached from |
244 | * uninteresting commits not interesting. | |
6b209d47 JH |
245 | */ |
246 | for (;;) { | |
247 | int changed = 0; | |
248 | struct commit_list *s; | |
249 | for (s = *seen_p; s; s = s->next) { | |
250 | struct commit *c = s->item; | |
251 | struct commit_list *parents; | |
252 | ||
253 | if (((c->object.flags & all_revs) != all_revs) && | |
254 | !(c->object.flags & UNINTERESTING)) | |
255 | continue; | |
256 | ||
257 | /* The current commit is either a merge base or | |
258 | * already uninteresting one. Mark its parents | |
259 | * as uninteresting commits _only_ if they are | |
260 | * already parsed. No reason to find new ones | |
261 | * here. | |
262 | */ | |
263 | parents = c->parents; | |
264 | while (parents) { | |
265 | struct commit *p = parents->item; | |
266 | parents = parents->next; | |
267 | if (!(p->object.flags & UNINTERESTING)) { | |
268 | p->object.flags |= UNINTERESTING; | |
269 | changed = 1; | |
270 | } | |
271 | } | |
272 | } | |
273 | if (!changed) | |
274 | break; | |
275 | } | |
f76412ed JH |
276 | } |
277 | ||
013f276e | 278 | static void show_one_commit(struct commit *commit, int no_name) |
f76412ed | 279 | { |
f285a2d7 | 280 | struct strbuf pretty = STRBUF_INIT; |
80583c0e | 281 | const char *pretty_str = "(unavailable)"; |
d3ff6f55 | 282 | struct commit_name *name = commit->util; |
80583c0e JH |
283 | |
284 | if (commit->object.parsed) { | |
8b8a5374 | 285 | pp_commit_easy(CMIT_FMT_ONELINE, commit, &pretty); |
674d1727 | 286 | pretty_str = pretty.buf; |
80583c0e JH |
287 | } |
288 | if (!prefixcmp(pretty_str, "[PATCH] ")) | |
289 | pretty_str += 8; | |
013f276e JH |
290 | |
291 | if (!no_name) { | |
292 | if (name && name->head_name) { | |
293 | printf("[%s", name->head_name); | |
294 | if (name->generation) { | |
295 | if (name->generation == 1) | |
296 | printf("^"); | |
297 | else | |
298 | printf("~%d", name->generation); | |
299 | } | |
300 | printf("] "); | |
301 | } | |
302 | else | |
303 | printf("[%s] ", | |
bd7440fe TRC |
304 | find_unique_abbrev(commit->object.sha1, |
305 | DEFAULT_ABBREV)); | |
f76412ed | 306 | } |
80583c0e | 307 | puts(pretty_str); |
674d1727 | 308 | strbuf_release(&pretty); |
f76412ed JH |
309 | } |
310 | ||
311 | static char *ref_name[MAX_REVS + 1]; | |
312 | static int ref_name_cnt; | |
313 | ||
bb5ebed7 JH |
314 | static const char *find_digit_prefix(const char *s, int *v) |
315 | { | |
316 | const char *p; | |
317 | int ver; | |
318 | char ch; | |
319 | ||
320 | for (p = s, ver = 0; | |
321 | '0' <= (ch = *p) && ch <= '9'; | |
322 | p++) | |
323 | ver = ver * 10 + ch - '0'; | |
324 | *v = ver; | |
325 | return p; | |
326 | } | |
327 | ||
328 | ||
329 | static int version_cmp(const char *a, const char *b) | |
330 | { | |
331 | while (1) { | |
332 | int va, vb; | |
333 | ||
334 | a = find_digit_prefix(a, &va); | |
335 | b = find_digit_prefix(b, &vb); | |
336 | if (va != vb) | |
337 | return va - vb; | |
338 | ||
339 | while (1) { | |
340 | int ca = *a; | |
341 | int cb = *b; | |
342 | if ('0' <= ca && ca <= '9') | |
343 | ca = 0; | |
344 | if ('0' <= cb && cb <= '9') | |
345 | cb = 0; | |
346 | if (ca != cb) | |
347 | return ca - cb; | |
348 | if (!ca) | |
349 | break; | |
350 | a++; | |
351 | b++; | |
352 | } | |
353 | if (!*a && !*b) | |
354 | return 0; | |
355 | } | |
356 | } | |
357 | ||
628894b2 JH |
358 | static int compare_ref_name(const void *a_, const void *b_) |
359 | { | |
360 | const char * const*a = a_, * const*b = b_; | |
bb5ebed7 | 361 | return version_cmp(*a, *b); |
628894b2 JH |
362 | } |
363 | ||
364 | static void sort_ref_range(int bottom, int top) | |
365 | { | |
366 | qsort(ref_name + bottom, top - bottom, sizeof(ref_name[0]), | |
367 | compare_ref_name); | |
368 | } | |
369 | ||
76a44c5c JH |
370 | static int append_ref(const char *refname, const unsigned char *sha1, |
371 | int allow_dups) | |
f76412ed JH |
372 | { |
373 | struct commit *commit = lookup_commit_reference_gently(sha1, 1); | |
bb5ebed7 JH |
374 | int i; |
375 | ||
f76412ed JH |
376 | if (!commit) |
377 | return 0; | |
bb5ebed7 | 378 | |
76a44c5c JH |
379 | if (!allow_dups) { |
380 | /* Avoid adding the same thing twice */ | |
381 | for (i = 0; i < ref_name_cnt; i++) | |
382 | if (!strcmp(refname, ref_name[i])) | |
383 | return 0; | |
384 | } | |
79778e46 | 385 | if (MAX_REVS <= ref_name_cnt) { |
33fa4d3d | 386 | warning("ignoring %s; cannot handle more than %d refs", |
f76412ed JH |
387 | refname, MAX_REVS); |
388 | return 0; | |
389 | } | |
9befac47 | 390 | ref_name[ref_name_cnt++] = xstrdup(refname); |
f76412ed JH |
391 | ref_name[ref_name_cnt] = NULL; |
392 | return 0; | |
393 | } | |
394 | ||
8da19775 | 395 | static int append_head_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) |
f76412ed | 396 | { |
92421502 JH |
397 | unsigned char tmp[20]; |
398 | int ofs = 11; | |
1968d77d | 399 | if (prefixcmp(refname, "refs/heads/")) |
f76412ed | 400 | return 0; |
92421502 JH |
401 | /* If both heads/foo and tags/foo exists, get_sha1 would |
402 | * get confused. | |
403 | */ | |
a89fccd2 | 404 | if (get_sha1(refname + ofs, tmp) || hashcmp(tmp, sha1)) |
92421502 | 405 | ofs = 5; |
76a44c5c | 406 | return append_ref(refname + ofs, sha1, 0); |
f76412ed JH |
407 | } |
408 | ||
f49006b0 BG |
409 | static int append_remote_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) |
410 | { | |
411 | unsigned char tmp[20]; | |
412 | int ofs = 13; | |
1968d77d | 413 | if (prefixcmp(refname, "refs/remotes/")) |
f49006b0 BG |
414 | return 0; |
415 | /* If both heads/foo and tags/foo exists, get_sha1 would | |
416 | * get confused. | |
417 | */ | |
418 | if (get_sha1(refname + ofs, tmp) || hashcmp(tmp, sha1)) | |
419 | ofs = 5; | |
76a44c5c | 420 | return append_ref(refname + ofs, sha1, 0); |
f49006b0 BG |
421 | } |
422 | ||
8da19775 | 423 | static int append_tag_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) |
f76412ed | 424 | { |
cc44c765 | 425 | if (prefixcmp(refname, "refs/tags/")) |
f76412ed | 426 | return 0; |
76a44c5c | 427 | return append_ref(refname + 5, sha1, 0); |
f76412ed JH |
428 | } |
429 | ||
287f8600 JH |
430 | static const char *match_ref_pattern = NULL; |
431 | static int match_ref_slash = 0; | |
432 | static int count_slash(const char *s) | |
433 | { | |
434 | int cnt = 0; | |
435 | while (*s) | |
436 | if (*s++ == '/') | |
437 | cnt++; | |
438 | return cnt; | |
439 | } | |
440 | ||
8da19775 | 441 | static int append_matching_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) |
287f8600 JH |
442 | { |
443 | /* we want to allow pattern hold/<asterisk> to show all | |
444 | * branches under refs/heads/hold/, and v0.99.9? to show | |
445 | * refs/tags/v0.99.9a and friends. | |
446 | */ | |
447 | const char *tail; | |
448 | int slash = count_slash(refname); | |
449 | for (tail = refname; *tail && match_ref_slash < slash; ) | |
450 | if (*tail++ == '/') | |
451 | slash--; | |
452 | if (!*tail) | |
453 | return 0; | |
454 | if (fnmatch(match_ref_pattern, tail, 0)) | |
455 | return 0; | |
599065a3 | 456 | if (!prefixcmp(refname, "refs/heads/")) |
8da19775 | 457 | return append_head_ref(refname, sha1, flag, cb_data); |
599065a3 | 458 | if (!prefixcmp(refname, "refs/tags/")) |
8da19775 | 459 | return append_tag_ref(refname, sha1, flag, cb_data); |
76a44c5c | 460 | return append_ref(refname, sha1, 0); |
287f8600 JH |
461 | } |
462 | ||
f49006b0 | 463 | static void snarf_refs(int head, int remotes) |
f76412ed | 464 | { |
628894b2 JH |
465 | if (head) { |
466 | int orig_cnt = ref_name_cnt; | |
cb5d709f | 467 | for_each_ref(append_head_ref, NULL); |
628894b2 JH |
468 | sort_ref_range(orig_cnt, ref_name_cnt); |
469 | } | |
f49006b0 | 470 | if (remotes) { |
628894b2 | 471 | int orig_cnt = ref_name_cnt; |
f49006b0 | 472 | for_each_ref(append_remote_ref, NULL); |
628894b2 JH |
473 | sort_ref_range(orig_cnt, ref_name_cnt); |
474 | } | |
f76412ed JH |
475 | } |
476 | ||
ed378ec7 | 477 | static int rev_is_head(char *head, int headlen, char *name, |
f76412ed JH |
478 | unsigned char *head_sha1, unsigned char *sha1) |
479 | { | |
ed378ec7 | 480 | if ((!head[0]) || |
a89fccd2 | 481 | (head_sha1 && sha1 && hashcmp(head_sha1, sha1))) |
f76412ed | 482 | return 0; |
cc44c765 | 483 | if (!prefixcmp(head, "refs/heads/")) |
afdcec73 | 484 | head += 11; |
cc44c765 | 485 | if (!prefixcmp(name, "refs/heads/")) |
afdcec73 | 486 | name += 11; |
cc44c765 | 487 | else if (!prefixcmp(name, "heads/")) |
afdcec73 | 488 | name += 6; |
ed378ec7 | 489 | return !strcmp(head, name); |
f76412ed JH |
490 | } |
491 | ||
492 | static int show_merge_base(struct commit_list *seen, int num_rev) | |
493 | { | |
494 | int all_mask = ((1u << (REV_SHIFT + num_rev)) - 1); | |
495 | int all_revs = all_mask & ~((1u << REV_SHIFT) - 1); | |
2f0f8b71 | 496 | int exit_status = 1; |
f76412ed JH |
497 | |
498 | while (seen) { | |
499 | struct commit *commit = pop_one_commit(&seen); | |
500 | int flags = commit->object.flags & all_mask; | |
501 | if (!(flags & UNINTERESTING) && | |
502 | ((flags & all_revs) == all_revs)) { | |
503 | puts(sha1_to_hex(commit->object.sha1)); | |
2f0f8b71 JH |
504 | exit_status = 0; |
505 | commit->object.flags |= UNINTERESTING; | |
f76412ed JH |
506 | } |
507 | } | |
2f0f8b71 | 508 | return exit_status; |
f76412ed JH |
509 | } |
510 | ||
1f8af483 JH |
511 | static int show_independent(struct commit **rev, |
512 | int num_rev, | |
513 | char **ref_name, | |
514 | unsigned int *rev_mask) | |
515 | { | |
516 | int i; | |
517 | ||
518 | for (i = 0; i < num_rev; i++) { | |
519 | struct commit *commit = rev[i]; | |
520 | unsigned int flag = rev_mask[i]; | |
521 | ||
522 | if (commit->object.flags == flag) | |
523 | puts(sha1_to_hex(commit->object.sha1)); | |
524 | commit->object.flags |= UNINTERESTING; | |
525 | } | |
526 | return 0; | |
527 | } | |
528 | ||
287f8600 JH |
529 | static void append_one_rev(const char *av) |
530 | { | |
531 | unsigned char revkey[20]; | |
532 | if (!get_sha1(av, revkey)) { | |
76a44c5c | 533 | append_ref(av, revkey, 0); |
287f8600 JH |
534 | return; |
535 | } | |
87758f97 | 536 | if (strchr(av, '*') || strchr(av, '?') || strchr(av, '[')) { |
287f8600 JH |
537 | /* glob style match */ |
538 | int saved_matches = ref_name_cnt; | |
539 | match_ref_pattern = av; | |
540 | match_ref_slash = count_slash(av); | |
cb5d709f | 541 | for_each_ref(append_matching_ref, NULL); |
287f8600 JH |
542 | if (saved_matches == ref_name_cnt && |
543 | ref_name_cnt < MAX_REVS) | |
544 | error("no matching refs with %s", av); | |
06d900cf JH |
545 | if (saved_matches + 1 < ref_name_cnt) |
546 | sort_ref_range(saved_matches, ref_name_cnt); | |
287f8600 JH |
547 | return; |
548 | } | |
549 | die("bad sha1 reference %s", av); | |
550 | } | |
551 | ||
ef90d6d4 | 552 | static int git_show_branch_config(const char *var, const char *value, void *cb) |
c2bdd6af JH |
553 | { |
554 | if (!strcmp(var, "showbranch.default")) { | |
4f9c412b JH |
555 | if (!value) |
556 | return config_error_nonbool(var); | |
3af1cae4 JH |
557 | /* |
558 | * default_arg is now passed to parse_options(), so we need to | |
9517e6b8 | 559 | * mimic the real argv a bit better. |
3af1cae4 JH |
560 | */ |
561 | if (!default_num) { | |
562 | default_alloc = 20; | |
563 | default_arg = xcalloc(default_alloc, sizeof(*default_arg)); | |
564 | default_arg[default_num++] = "show-branch"; | |
565 | } else if (default_alloc <= default_num + 1) { | |
c2bdd6af JH |
566 | default_alloc = default_alloc * 3 / 2 + 20; |
567 | default_arg = xrealloc(default_arg, sizeof *default_arg * default_alloc); | |
568 | } | |
9befac47 | 569 | default_arg[default_num++] = xstrdup(value); |
c2bdd6af JH |
570 | default_arg[default_num] = NULL; |
571 | return 0; | |
572 | } | |
573 | ||
ab07ba2a | 574 | if (!strcmp(var, "color.showbranch")) { |
e269eb79 | 575 | showbranch_use_color = git_config_colorbool(var, value); |
ab07ba2a MH |
576 | return 0; |
577 | } | |
578 | ||
579 | return git_color_default_config(var, value, cb); | |
c2bdd6af JH |
580 | } |
581 | ||
c24fe420 JH |
582 | static int omit_in_dense(struct commit *commit, struct commit **rev, int n) |
583 | { | |
584 | /* If the commit is tip of the named branches, do not | |
585 | * omit it. | |
586 | * Otherwise, if it is a merge that is reachable from only one | |
587 | * tip, it is not that interesting. | |
588 | */ | |
589 | int i, flag, count; | |
590 | for (i = 0; i < n; i++) | |
591 | if (rev[i] == commit) | |
592 | return 0; | |
593 | flag = commit->object.flags; | |
594 | for (i = count = 0; i < n; i++) { | |
595 | if (flag & (1u << (i + REV_SHIFT))) | |
596 | count++; | |
597 | } | |
598 | if (count == 1) | |
599 | return 1; | |
600 | return 0; | |
601 | } | |
602 | ||
57343652 SB |
603 | static int reflog = 0; |
604 | ||
605 | static int parse_reflog_param(const struct option *opt, const char *arg, | |
606 | int unset) | |
76a44c5c JH |
607 | { |
608 | char *ep; | |
57343652 SB |
609 | const char **base = (const char **)opt->value; |
610 | if (!arg) | |
611 | arg = ""; | |
612 | reflog = strtoul(arg, &ep, 10); | |
76a44c5c JH |
613 | if (*ep == ',') |
614 | *base = ep + 1; | |
615 | else if (*ep) | |
57343652 | 616 | return error("unrecognized reflog param '%s'", arg); |
76a44c5c JH |
617 | else |
618 | *base = NULL; | |
57343652 SB |
619 | if (reflog <= 0) |
620 | reflog = DEFAULT_REFLOG; | |
621 | return 0; | |
76a44c5c JH |
622 | } |
623 | ||
a633fca0 | 624 | int cmd_show_branch(int ac, const char **av, const char *prefix) |
f76412ed JH |
625 | { |
626 | struct commit *rev[MAX_REVS], *commit; | |
76a44c5c | 627 | char *reflog_msg[MAX_REVS]; |
f76412ed | 628 | struct commit_list *list = NULL, *seen = NULL; |
1f8af483 | 629 | unsigned int rev_mask[MAX_REVS]; |
f76412ed | 630 | int num_rev, i, extra = 0; |
f49006b0 | 631 | int all_heads = 0, all_remotes = 0; |
6b209d47 | 632 | int all_mask, all_revs; |
08f704f2 | 633 | enum rev_sort_order sort_order = REV_SORT_IN_GRAPH_ORDER; |
ed378ec7 LT |
634 | char head[128]; |
635 | const char *head_p; | |
636 | int head_len; | |
f76412ed JH |
637 | unsigned char head_sha1[20]; |
638 | int merge_base = 0; | |
1f8af483 | 639 | int independent = 0; |
013f276e JH |
640 | int no_name = 0; |
641 | int sha1_name = 0; | |
6b209d47 | 642 | int shown_merge_point = 0; |
1aa68d67 | 643 | int with_current_branch = 0; |
ebedc319 | 644 | int head_at = -1; |
d320a543 | 645 | int topics = 0; |
c24fe420 | 646 | int dense = 1; |
76a44c5c | 647 | const char *reflog_base = NULL; |
57343652 | 648 | struct option builtin_show_branch_options[] = { |
d5d09d47 SB |
649 | OPT_BOOL('a', "all", &all_heads, |
650 | N_("show remote-tracking and local branches")), | |
651 | OPT_BOOL('r', "remotes", &all_remotes, | |
652 | N_("show remote-tracking branches")), | |
73e9da01 | 653 | OPT__COLOR(&showbranch_use_color, |
d780bef4 NTND |
654 | N_("color '*!+-' corresponding to the branch")), |
655 | { OPTION_INTEGER, 0, "more", &extra, N_("n"), | |
656 | N_("show <n> more commits after the common ancestor"), | |
e169b974 | 657 | PARSE_OPT_OPTARG, NULL, (intptr_t)1 }, |
d780bef4 | 658 | OPT_SET_INT(0, "list", &extra, N_("synonym to more=-1"), -1), |
d5d09d47 SB |
659 | OPT_BOOL(0, "no-name", &no_name, N_("suppress naming strings")), |
660 | OPT_BOOL(0, "current", &with_current_branch, | |
661 | N_("include the current branch")), | |
662 | OPT_BOOL(0, "sha1-name", &sha1_name, | |
663 | N_("name commits with their object names")), | |
664 | OPT_BOOL(0, "merge-base", &merge_base, | |
665 | N_("show possible merge bases")), | |
666 | OPT_BOOL(0, "independent", &independent, | |
d780bef4 | 667 | N_("show refs unreachable from any other ref")), |
08f704f2 JH |
668 | OPT_SET_INT(0, "topo-order", &sort_order, |
669 | N_("show commits in topological order"), | |
670 | REV_SORT_IN_GRAPH_ORDER), | |
d5d09d47 SB |
671 | OPT_BOOL(0, "topics", &topics, |
672 | N_("show only commits not on the first branch")), | |
57343652 | 673 | OPT_SET_INT(0, "sparse", &dense, |
d780bef4 | 674 | N_("show merges reachable from only one tip"), 0), |
08f704f2 | 675 | OPT_SET_INT(0, "date-order", &sort_order, |
465cf8ce | 676 | N_("topologically sort, maintaining date order " |
4ca8ae71 | 677 | "where possible"), |
08f704f2 | 678 | REV_SORT_BY_COMMIT_DATE), |
d780bef4 NTND |
679 | { OPTION_CALLBACK, 'g', "reflog", &reflog_base, N_("<n>[,<base>]"), |
680 | N_("show <n> most recent ref-log entries starting at " | |
681 | "base"), | |
57343652 SB |
682 | PARSE_OPT_OPTARG | PARSE_OPT_LITERAL_ARGHELP, |
683 | parse_reflog_param }, | |
684 | OPT_END() | |
685 | }; | |
f76412ed | 686 | |
ef90d6d4 | 687 | git_config(git_show_branch_config, NULL); |
076b2324 | 688 | |
c2bdd6af JH |
689 | /* If nothing is specified, try the default first */ |
690 | if (ac == 1 && default_num) { | |
3af1cae4 JH |
691 | ac = default_num; |
692 | av = default_arg; | |
c2bdd6af JH |
693 | } |
694 | ||
37782920 | 695 | ac = parse_options(ac, av, prefix, builtin_show_branch_options, |
57343652 SB |
696 | show_branch_usage, PARSE_OPT_STOP_AT_NON_OPTION); |
697 | if (all_heads) | |
698 | all_remotes = 1; | |
f76412ed | 699 | |
df373ea9 | 700 | if (extra || reflog) { |
76a44c5c JH |
701 | /* "listing" mode is incompatible with |
702 | * independent nor merge-base modes. | |
703 | */ | |
704 | if (independent || merge_base) | |
57343652 SB |
705 | usage_with_options(show_branch_usage, |
706 | builtin_show_branch_options); | |
df373ea9 | 707 | if (reflog && ((0 < extra) || all_heads || all_remotes)) |
76a44c5c JH |
708 | /* |
709 | * Asking for --more in reflog mode does not | |
b15af079 JH |
710 | * make sense. --list is Ok. |
711 | * | |
712 | * Also --all and --remotes do not make sense either. | |
76a44c5c | 713 | */ |
57343652 SB |
714 | die("--reflog is incompatible with --all, --remotes, " |
715 | "--independent or --merge-base"); | |
76a44c5c | 716 | } |
1f8af483 | 717 | |
bb5ebed7 | 718 | /* If nothing is specified, show all branches by default */ |
f49006b0 | 719 | if (ac + all_heads + all_remotes == 0) |
bb5ebed7 JH |
720 | all_heads = 1; |
721 | ||
7e3fe904 | 722 | if (reflog) { |
76a44c5c JH |
723 | unsigned char sha1[20]; |
724 | char nth_desc[256]; | |
725 | char *ref; | |
726 | int base = 0; | |
df373ea9 JH |
727 | |
728 | if (ac == 0) { | |
729 | static const char *fake_av[2]; | |
632ac9fd | 730 | |
96ec7b1e | 731 | fake_av[0] = resolve_refdup("HEAD", sha1, 1, NULL); |
df373ea9 JH |
732 | fake_av[1] = NULL; |
733 | av = fake_av; | |
734 | ac = 1; | |
735 | } | |
76a44c5c | 736 | if (ac != 1) |
7e3fe904 | 737 | die("--reflog option needs one branch name"); |
df373ea9 | 738 | |
b15af079 JH |
739 | if (MAX_REVS < reflog) |
740 | die("Only %d entries can be shown at one time.", | |
741 | MAX_REVS); | |
76a44c5c JH |
742 | if (!dwim_ref(*av, strlen(*av), sha1, &ref)) |
743 | die("No such ref %s", *av); | |
744 | ||
745 | /* Has the base been specified? */ | |
746 | if (reflog_base) { | |
747 | char *ep; | |
748 | base = strtoul(reflog_base, &ep, 10); | |
749 | if (*ep) { | |
750 | /* Ah, that is a date spec... */ | |
751 | unsigned long at; | |
752 | at = approxidate(reflog_base); | |
753 | read_ref_at(ref, at, -1, sha1, NULL, | |
754 | NULL, NULL, &base); | |
755 | } | |
756 | } | |
757 | ||
7e3fe904 | 758 | for (i = 0; i < reflog; i++) { |
3a55602e SP |
759 | char *logmsg, *m; |
760 | const char *msg; | |
76a44c5c JH |
761 | unsigned long timestamp; |
762 | int tz; | |
763 | ||
764 | if (read_ref_at(ref, 0, base+i, sha1, &logmsg, | |
765 | ×tamp, &tz, NULL)) { | |
766 | reflog = i; | |
767 | break; | |
768 | } | |
769 | msg = strchr(logmsg, '\t'); | |
770 | if (!msg) | |
771 | msg = "(none)"; | |
772 | else | |
773 | msg++; | |
774 | m = xmalloc(strlen(msg) + 200); | |
775 | sprintf(m, "(%s) %s", | |
16bfefee | 776 | show_date(timestamp, tz, 1), |
76a44c5c JH |
777 | msg); |
778 | reflog_msg[i] = m; | |
779 | free(logmsg); | |
780 | sprintf(nth_desc, "%s@{%d}", *av, base+i); | |
781 | append_ref(nth_desc, sha1, 1); | |
7e3fe904 JH |
782 | } |
783 | } | |
df373ea9 JH |
784 | else if (all_heads + all_remotes) |
785 | snarf_refs(all_heads, all_remotes); | |
7e3fe904 JH |
786 | else { |
787 | while (0 < ac) { | |
788 | append_one_rev(*av); | |
789 | ac--; av++; | |
790 | } | |
287f8600 | 791 | } |
bb5ebed7 | 792 | |
8cad4744 | 793 | head_p = resolve_ref_unsafe("HEAD", head_sha1, 1, NULL); |
ed378ec7 LT |
794 | if (head_p) { |
795 | head_len = strlen(head_p); | |
796 | memcpy(head, head_p, head_len + 1); | |
1aa68d67 JH |
797 | } |
798 | else { | |
ed378ec7 LT |
799 | head_len = 0; |
800 | head[0] = 0; | |
1aa68d67 JH |
801 | } |
802 | ||
ed378ec7 | 803 | if (with_current_branch && head_p) { |
1aa68d67 JH |
804 | int has_head = 0; |
805 | for (i = 0; !has_head && i < ref_name_cnt; i++) { | |
806 | /* We are only interested in adding the branch | |
807 | * HEAD points at. | |
808 | */ | |
ed378ec7 LT |
809 | if (rev_is_head(head, |
810 | head_len, | |
1aa68d67 JH |
811 | ref_name[i], |
812 | head_sha1, NULL)) | |
813 | has_head++; | |
814 | } | |
815 | if (!has_head) { | |
f8fcb57b JH |
816 | int offset = !prefixcmp(head, "refs/heads/") ? 11 : 0; |
817 | append_one_rev(head + offset); | |
1aa68d67 JH |
818 | } |
819 | } | |
820 | ||
287f8600 JH |
821 | if (!ref_name_cnt) { |
822 | fprintf(stderr, "No revs to be shown.\n"); | |
823 | exit(0); | |
824 | } | |
f76412ed JH |
825 | |
826 | for (num_rev = 0; ref_name[num_rev]; num_rev++) { | |
827 | unsigned char revkey[20]; | |
1f8af483 | 828 | unsigned int flag = 1u << (num_rev + REV_SHIFT); |
f76412ed JH |
829 | |
830 | if (MAX_REVS <= num_rev) | |
831 | die("cannot handle more than %d revs.", MAX_REVS); | |
832 | if (get_sha1(ref_name[num_rev], revkey)) | |
7246ed43 | 833 | die("'%s' is not a valid ref.", ref_name[num_rev]); |
f76412ed JH |
834 | commit = lookup_commit_reference(revkey); |
835 | if (!commit) | |
836 | die("cannot find commit %s (%s)", | |
837 | ref_name[num_rev], revkey); | |
838 | parse_commit(commit); | |
f76412ed JH |
839 | mark_seen(commit, &seen); |
840 | ||
841 | /* rev#0 uses bit REV_SHIFT, rev#1 uses bit REV_SHIFT+1, | |
842 | * and so on. REV_SHIFT bits from bit 0 are used for | |
843 | * internal bookkeeping. | |
844 | */ | |
1f8af483 JH |
845 | commit->object.flags |= flag; |
846 | if (commit->object.flags == flag) | |
47e44ed1 | 847 | commit_list_insert_by_date(commit, &list); |
f76412ed JH |
848 | rev[num_rev] = commit; |
849 | } | |
1f8af483 JH |
850 | for (i = 0; i < num_rev; i++) |
851 | rev_mask[i] = rev[i]->object.flags; | |
852 | ||
853 | if (0 <= extra) | |
854 | join_revs(&list, &seen, num_rev, extra); | |
f76412ed | 855 | |
47e44ed1 | 856 | commit_list_sort_by_date(&seen); |
26a8ad25 | 857 | |
f76412ed JH |
858 | if (merge_base) |
859 | return show_merge_base(seen, num_rev); | |
860 | ||
1f8af483 JH |
861 | if (independent) |
862 | return show_independent(rev, num_rev, ref_name, rev_mask); | |
863 | ||
864 | /* Show list; --more=-1 means list-only */ | |
c9d023b2 | 865 | if (1 < num_rev || extra < 0) { |
f76412ed JH |
866 | for (i = 0; i < num_rev; i++) { |
867 | int j; | |
ed378ec7 LT |
868 | int is_head = rev_is_head(head, |
869 | head_len, | |
f76412ed JH |
870 | ref_name[i], |
871 | head_sha1, | |
872 | rev[i]->object.sha1); | |
1f8af483 JH |
873 | if (extra < 0) |
874 | printf("%c [%s] ", | |
875 | is_head ? '*' : ' ', ref_name[i]); | |
876 | else { | |
877 | for (j = 0; j < i; j++) | |
878 | putchar(' '); | |
ab07ba2a | 879 | printf("%s%c%s [%s] ", |
7cd52b5b | 880 | get_color_code(i), |
ab07ba2a MH |
881 | is_head ? '*' : '!', |
882 | get_color_reset_code(), ref_name[i]); | |
1f8af483 | 883 | } |
76a44c5c JH |
884 | |
885 | if (!reflog) { | |
886 | /* header lines never need name */ | |
887 | show_one_commit(rev[i], 1); | |
888 | } | |
889 | else | |
890 | puts(reflog_msg[i]); | |
891 | ||
ebedc319 JH |
892 | if (is_head) |
893 | head_at = i; | |
f76412ed | 894 | } |
1f8af483 JH |
895 | if (0 <= extra) { |
896 | for (i = 0; i < num_rev; i++) | |
897 | putchar('-'); | |
898 | putchar('\n'); | |
899 | } | |
f5e375c9 | 900 | } |
1f8af483 JH |
901 | if (extra < 0) |
902 | exit(0); | |
f5e375c9 | 903 | |
8e5dd22b | 904 | /* Sort topologically */ |
08f704f2 | 905 | sort_in_topological_order(&seen, sort_order); |
8e5dd22b JH |
906 | |
907 | /* Give names to commits */ | |
013f276e JH |
908 | if (!sha1_name && !no_name) |
909 | name_commits(seen, rev, ref_name, num_rev); | |
8e5dd22b JH |
910 | |
911 | all_mask = ((1u << (REV_SHIFT + num_rev)) - 1); | |
912 | all_revs = all_mask & ~((1u << REV_SHIFT) - 1); | |
8e5dd22b | 913 | |
f76412ed JH |
914 | while (seen) { |
915 | struct commit *commit = pop_one_commit(&seen); | |
916 | int this_flag = commit->object.flags; | |
f794c234 | 917 | int is_merge_point = ((this_flag & all_revs) == all_revs); |
f5e375c9 | 918 | |
f794c234 | 919 | shown_merge_point |= is_merge_point; |
8e5dd22b | 920 | |
f5e375c9 | 921 | if (1 < num_rev) { |
c24fe420 JH |
922 | int is_merge = !!(commit->parents && |
923 | commit->parents->next); | |
f794c234 JH |
924 | if (topics && |
925 | !is_merge_point && | |
926 | (this_flag & (1u << REV_SHIFT))) | |
927 | continue; | |
c24fe420 JH |
928 | if (dense && is_merge && |
929 | omit_in_dense(commit, rev, num_rev)) | |
930 | continue; | |
ebedc319 JH |
931 | for (i = 0; i < num_rev; i++) { |
932 | int mark; | |
933 | if (!(this_flag & (1u << (i + REV_SHIFT)))) | |
934 | mark = ' '; | |
935 | else if (is_merge) | |
936 | mark = '-'; | |
937 | else if (i == head_at) | |
938 | mark = '*'; | |
939 | else | |
940 | mark = '+'; | |
ab07ba2a | 941 | printf("%s%c%s", |
7cd52b5b | 942 | get_color_code(i), |
ab07ba2a | 943 | mark, get_color_reset_code()); |
ebedc319 | 944 | } |
f5e375c9 JH |
945 | putchar(' '); |
946 | } | |
013f276e | 947 | show_one_commit(commit, no_name); |
6b209d47 JH |
948 | |
949 | if (shown_merge_point && --extra < 0) | |
950 | break; | |
f76412ed JH |
951 | } |
952 | return 0; | |
953 | } |