b15fee5e31893ece7f0d9f7d6cd2b8c1f51ab6f4
[git/git.git] / builtin / branch.c
1 /*
2 * Builtin "git branch"
3 *
4 * Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
5 * Based on git-branch.sh by Junio C Hamano.
6 */
7
8 #include "cache.h"
9 #include "color.h"
10 #include "refs.h"
11 #include "commit.h"
12 #include "builtin.h"
13 #include "remote.h"
14 #include "parse-options.h"
15 #include "branch.h"
16 #include "diff.h"
17 #include "revision.h"
18
19 static const char * const builtin_branch_usage[] = {
20 "git branch [options] [-r | -a] [--merged | --no-merged]",
21 "git branch [options] [-l] [-f] <branchname> [<start-point>]",
22 "git branch [options] [-r] (-d | -D) <branchname>...",
23 "git branch [options] (-m | -M) [<oldbranch>] <newbranch>",
24 NULL
25 };
26
27 #define REF_LOCAL_BRANCH 0x01
28 #define REF_REMOTE_BRANCH 0x02
29
30 static const char *head;
31 static unsigned char head_sha1[20];
32
33 static int branch_use_color = -1;
34 static char branch_colors[][COLOR_MAXLEN] = {
35 GIT_COLOR_RESET,
36 GIT_COLOR_NORMAL, /* PLAIN */
37 GIT_COLOR_RED, /* REMOTE */
38 GIT_COLOR_NORMAL, /* LOCAL */
39 GIT_COLOR_GREEN, /* CURRENT */
40 };
41 enum color_branch {
42 BRANCH_COLOR_RESET = 0,
43 BRANCH_COLOR_PLAIN = 1,
44 BRANCH_COLOR_REMOTE = 2,
45 BRANCH_COLOR_LOCAL = 3,
46 BRANCH_COLOR_CURRENT = 4
47 };
48
49 static enum merge_filter {
50 NO_FILTER = 0,
51 SHOW_NOT_MERGED,
52 SHOW_MERGED
53 } merge_filter;
54 static unsigned char merge_filter_ref[20];
55
56 static int parse_branch_color_slot(const char *var, int ofs)
57 {
58 if (!strcasecmp(var+ofs, "plain"))
59 return BRANCH_COLOR_PLAIN;
60 if (!strcasecmp(var+ofs, "reset"))
61 return BRANCH_COLOR_RESET;
62 if (!strcasecmp(var+ofs, "remote"))
63 return BRANCH_COLOR_REMOTE;
64 if (!strcasecmp(var+ofs, "local"))
65 return BRANCH_COLOR_LOCAL;
66 if (!strcasecmp(var+ofs, "current"))
67 return BRANCH_COLOR_CURRENT;
68 return -1;
69 }
70
71 static int git_branch_config(const char *var, const char *value, void *cb)
72 {
73 if (!strcmp(var, "color.branch")) {
74 branch_use_color = git_config_colorbool(var, value);
75 return 0;
76 }
77 if (!prefixcmp(var, "color.branch.")) {
78 int slot = parse_branch_color_slot(var, 13);
79 if (slot < 0)
80 return 0;
81 if (!value)
82 return config_error_nonbool(var);
83 color_parse(value, var, branch_colors[slot]);
84 return 0;
85 }
86 return git_color_default_config(var, value, cb);
87 }
88
89 static const char *branch_get_color(enum color_branch ix)
90 {
91 if (branch_use_color > 0)
92 return branch_colors[ix];
93 return "";
94 }
95
96 static int branch_merged(int kind, const char *name,
97 struct commit *rev, struct commit *head_rev)
98 {
99 /*
100 * This checks whether the merge bases of branch and HEAD (or
101 * the other branch this branch builds upon) contains the
102 * branch, which means that the branch has already been merged
103 * safely to HEAD (or the other branch).
104 */
105 struct commit *reference_rev = NULL;
106 const char *reference_name = NULL;
107 int merged;
108
109 if (kind == REF_LOCAL_BRANCH) {
110 struct branch *branch = branch_get(name);
111 unsigned char sha1[20];
112
113 if (branch &&
114 branch->merge &&
115 branch->merge[0] &&
116 branch->merge[0]->dst &&
117 (reference_name =
118 resolve_ref(branch->merge[0]->dst, sha1, 1, NULL)) != NULL)
119 reference_rev = lookup_commit_reference(sha1);
120 }
121 if (!reference_rev)
122 reference_rev = head_rev;
123
124 merged = in_merge_bases(rev, &reference_rev, 1);
125
126 /*
127 * After the safety valve is fully redefined to "check with
128 * upstream, if any, otherwise with HEAD", we should just
129 * return the result of the in_merge_bases() above without
130 * any of the following code, but during the transition period,
131 * a gentle reminder is in order.
132 */
133 if ((head_rev != reference_rev) &&
134 in_merge_bases(rev, &head_rev, 1) != merged) {
135 if (merged)
136 warning(_("deleting branch '%s' that has been merged to\n"
137 " '%s', but not yet merged to HEAD."),
138 name, reference_name);
139 else
140 warning(_("not deleting branch '%s' that is not yet merged to\n"
141 " '%s', even though it is merged to HEAD."),
142 name, reference_name);
143 }
144 return merged;
145 }
146
147 static int delete_branches(int argc, const char **argv, int force, int kinds)
148 {
149 struct commit *rev, *head_rev = NULL;
150 unsigned char sha1[20];
151 char *name = NULL;
152 const char *fmt, *remote;
153 int i;
154 int ret = 0;
155 struct strbuf bname = STRBUF_INIT;
156
157 switch (kinds) {
158 case REF_REMOTE_BRANCH:
159 fmt = "refs/remotes/%s";
160 /* TRANSLATORS: This is "remote " in "remote branch '%s' not found" */
161 remote = _("remote ");
162 force = 1;
163 break;
164 case REF_LOCAL_BRANCH:
165 fmt = "refs/heads/%s";
166 remote = "";
167 break;
168 default:
169 die(_("cannot use -a with -d"));
170 }
171
172 if (!force) {
173 head_rev = lookup_commit_reference(head_sha1);
174 if (!head_rev)
175 die(_("Couldn't look up commit object for HEAD"));
176 }
177 for (i = 0; i < argc; i++, strbuf_release(&bname)) {
178 strbuf_branchname(&bname, argv[i]);
179 if (kinds == REF_LOCAL_BRANCH && !strcmp(head, bname.buf)) {
180 error(_("Cannot delete the branch '%s' "
181 "which you are currently on."), bname.buf);
182 ret = 1;
183 continue;
184 }
185
186 free(name);
187
188 name = xstrdup(mkpath(fmt, bname.buf));
189 if (!resolve_ref(name, sha1, 1, NULL)) {
190 error(_("%sbranch '%s' not found."),
191 remote, bname.buf);
192 ret = 1;
193 continue;
194 }
195
196 rev = lookup_commit_reference(sha1);
197 if (!rev) {
198 error(_("Couldn't look up commit object for '%s'"), name);
199 ret = 1;
200 continue;
201 }
202
203 if (!force && !branch_merged(kinds, bname.buf, rev, head_rev)) {
204 error(_("The branch '%s' is not fully merged.\n"
205 "If you are sure you want to delete it, "
206 "run 'git branch -D %s'."), bname.buf, bname.buf);
207 ret = 1;
208 continue;
209 }
210
211 if (delete_ref(name, sha1, 0)) {
212 error(_("Error deleting %sbranch '%s'"), remote,
213 bname.buf);
214 ret = 1;
215 } else {
216 struct strbuf buf = STRBUF_INIT;
217 printf(_("Deleted %sbranch %s (was %s).\n"), remote,
218 bname.buf,
219 find_unique_abbrev(sha1, DEFAULT_ABBREV));
220 strbuf_addf(&buf, "branch.%s", bname.buf);
221 if (git_config_rename_section(buf.buf, NULL) < 0)
222 warning(_("Update of config-file failed"));
223 strbuf_release(&buf);
224 }
225 }
226
227 free(name);
228
229 return(ret);
230 }
231
232 struct ref_item {
233 char *name;
234 char *dest;
235 unsigned int kind, len;
236 struct commit *commit;
237 };
238
239 struct ref_list {
240 struct rev_info revs;
241 int index, alloc, maxwidth, verbose, abbrev;
242 struct ref_item *list;
243 struct commit_list *with_commit;
244 int kinds;
245 };
246
247 static char *resolve_symref(const char *src, const char *prefix)
248 {
249 unsigned char sha1[20];
250 int flag;
251 const char *dst, *cp;
252
253 dst = resolve_ref(src, sha1, 0, &flag);
254 if (!(dst && (flag & REF_ISSYMREF)))
255 return NULL;
256 if (prefix && (cp = skip_prefix(dst, prefix)))
257 dst = cp;
258 return xstrdup(dst);
259 }
260
261 struct append_ref_cb {
262 struct ref_list *ref_list;
263 int ret;
264 };
265
266 static int append_ref(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
267 {
268 struct append_ref_cb *cb = (struct append_ref_cb *)(cb_data);
269 struct ref_list *ref_list = cb->ref_list;
270 struct ref_item *newitem;
271 struct commit *commit;
272 int kind, i;
273 const char *prefix, *orig_refname = refname;
274
275 static struct {
276 int kind;
277 const char *prefix;
278 int pfxlen;
279 } ref_kind[] = {
280 { REF_LOCAL_BRANCH, "refs/heads/", 11 },
281 { REF_REMOTE_BRANCH, "refs/remotes/", 13 },
282 };
283
284 /* Detect kind */
285 for (i = 0; i < ARRAY_SIZE(ref_kind); i++) {
286 prefix = ref_kind[i].prefix;
287 if (strncmp(refname, prefix, ref_kind[i].pfxlen))
288 continue;
289 kind = ref_kind[i].kind;
290 refname += ref_kind[i].pfxlen;
291 break;
292 }
293 if (ARRAY_SIZE(ref_kind) <= i)
294 return 0;
295
296 /* Don't add types the caller doesn't want */
297 if ((kind & ref_list->kinds) == 0)
298 return 0;
299
300 commit = NULL;
301 if (ref_list->verbose || ref_list->with_commit || merge_filter != NO_FILTER) {
302 commit = lookup_commit_reference_gently(sha1, 1);
303 if (!commit) {
304 cb->ret = error(_("branch '%s' does not point at a commit"), refname);
305 return 0;
306 }
307
308 /* Filter with with_commit if specified */
309 if (!is_descendant_of(commit, ref_list->with_commit))
310 return 0;
311
312 if (merge_filter != NO_FILTER)
313 add_pending_object(&ref_list->revs,
314 (struct object *)commit, refname);
315 }
316
317 ALLOC_GROW(ref_list->list, ref_list->index + 1, ref_list->alloc);
318
319 /* Record the new item */
320 newitem = &(ref_list->list[ref_list->index++]);
321 newitem->name = xstrdup(refname);
322 newitem->kind = kind;
323 newitem->commit = commit;
324 newitem->len = strlen(refname);
325 newitem->dest = resolve_symref(orig_refname, prefix);
326 /* adjust for "remotes/" */
327 if (newitem->kind == REF_REMOTE_BRANCH &&
328 ref_list->kinds != REF_REMOTE_BRANCH)
329 newitem->len += 8;
330 if (newitem->len > ref_list->maxwidth)
331 ref_list->maxwidth = newitem->len;
332
333 return 0;
334 }
335
336 static void free_ref_list(struct ref_list *ref_list)
337 {
338 int i;
339
340 for (i = 0; i < ref_list->index; i++) {
341 free(ref_list->list[i].name);
342 free(ref_list->list[i].dest);
343 }
344 free(ref_list->list);
345 }
346
347 static int ref_cmp(const void *r1, const void *r2)
348 {
349 struct ref_item *c1 = (struct ref_item *)(r1);
350 struct ref_item *c2 = (struct ref_item *)(r2);
351
352 if (c1->kind != c2->kind)
353 return c1->kind - c2->kind;
354 return strcmp(c1->name, c2->name);
355 }
356
357 static void fill_tracking_info(struct strbuf *stat, const char *branch_name,
358 int show_upstream_ref)
359 {
360 int ours, theirs;
361 struct branch *branch = branch_get(branch_name);
362
363 if (!stat_tracking_info(branch, &ours, &theirs)) {
364 if (branch && branch->merge && branch->merge[0]->dst &&
365 show_upstream_ref)
366 strbuf_addf(stat, "[%s] ",
367 shorten_unambiguous_ref(branch->merge[0]->dst, 0));
368 return;
369 }
370
371 strbuf_addch(stat, '[');
372 if (show_upstream_ref)
373 strbuf_addf(stat, "%s: ",
374 shorten_unambiguous_ref(branch->merge[0]->dst, 0));
375 if (!ours)
376 strbuf_addf(stat, _("behind %d] "), theirs);
377 else if (!theirs)
378 strbuf_addf(stat, _("ahead %d] "), ours);
379 else
380 strbuf_addf(stat, _("ahead %d, behind %d] "), ours, theirs);
381 }
382
383 static int matches_merge_filter(struct commit *commit)
384 {
385 int is_merged;
386
387 if (merge_filter == NO_FILTER)
388 return 1;
389
390 is_merged = !!(commit->object.flags & UNINTERESTING);
391 return (is_merged == (merge_filter == SHOW_MERGED));
392 }
393
394 static void add_verbose_info(struct strbuf *out, struct ref_item *item,
395 int verbose, int abbrev)
396 {
397 struct strbuf subject = STRBUF_INIT, stat = STRBUF_INIT;
398 const char *sub = " **** invalid ref ****";
399 struct commit *commit = item->commit;
400
401 if (commit && !parse_commit(commit)) {
402 pp_commit_easy(CMIT_FMT_ONELINE, commit, &subject);
403 sub = subject.buf;
404 }
405
406 if (item->kind == REF_LOCAL_BRANCH)
407 fill_tracking_info(&stat, item->name, verbose > 1);
408
409 strbuf_addf(out, " %s %s%s",
410 find_unique_abbrev(item->commit->object.sha1, abbrev),
411 stat.buf, sub);
412 strbuf_release(&stat);
413 strbuf_release(&subject);
414 }
415
416 static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
417 int abbrev, int current, char *prefix)
418 {
419 char c;
420 int color;
421 struct commit *commit = item->commit;
422 struct strbuf out = STRBUF_INIT, name = STRBUF_INIT;
423
424 if (!matches_merge_filter(commit))
425 return;
426
427 switch (item->kind) {
428 case REF_LOCAL_BRANCH:
429 color = BRANCH_COLOR_LOCAL;
430 break;
431 case REF_REMOTE_BRANCH:
432 color = BRANCH_COLOR_REMOTE;
433 break;
434 default:
435 color = BRANCH_COLOR_PLAIN;
436 break;
437 }
438
439 c = ' ';
440 if (current) {
441 c = '*';
442 color = BRANCH_COLOR_CURRENT;
443 }
444
445 strbuf_addf(&name, "%s%s", prefix, item->name);
446 if (verbose)
447 strbuf_addf(&out, "%c %s%-*s%s", c, branch_get_color(color),
448 maxwidth, name.buf,
449 branch_get_color(BRANCH_COLOR_RESET));
450 else
451 strbuf_addf(&out, "%c %s%s%s", c, branch_get_color(color),
452 name.buf, branch_get_color(BRANCH_COLOR_RESET));
453
454 if (item->dest)
455 strbuf_addf(&out, " -> %s", item->dest);
456 else if (verbose)
457 /* " f7c0c00 [ahead 58, behind 197] vcs-svn: drop obj_pool.h" */
458 add_verbose_info(&out, item, verbose, abbrev);
459 printf("%s\n", out.buf);
460 strbuf_release(&name);
461 strbuf_release(&out);
462 }
463
464 static int calc_maxwidth(struct ref_list *refs)
465 {
466 int i, w = 0;
467 for (i = 0; i < refs->index; i++) {
468 if (!matches_merge_filter(refs->list[i].commit))
469 continue;
470 if (refs->list[i].len > w)
471 w = refs->list[i].len;
472 }
473 return w;
474 }
475
476
477 static void show_detached(struct ref_list *ref_list)
478 {
479 struct commit *head_commit = lookup_commit_reference_gently(head_sha1, 1);
480
481 if (head_commit && is_descendant_of(head_commit, ref_list->with_commit)) {
482 struct ref_item item;
483 item.name = xstrdup(_("(no branch)"));
484 item.len = strlen(item.name);
485 item.kind = REF_LOCAL_BRANCH;
486 item.dest = NULL;
487 item.commit = head_commit;
488 if (item.len > ref_list->maxwidth)
489 ref_list->maxwidth = item.len;
490 print_ref_item(&item, ref_list->maxwidth, ref_list->verbose, ref_list->abbrev, 1, "");
491 free(item.name);
492 }
493 }
494
495 static int print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit)
496 {
497 int i;
498 struct append_ref_cb cb;
499 struct ref_list ref_list;
500
501 memset(&ref_list, 0, sizeof(ref_list));
502 ref_list.kinds = kinds;
503 ref_list.verbose = verbose;
504 ref_list.abbrev = abbrev;
505 ref_list.with_commit = with_commit;
506 if (merge_filter != NO_FILTER)
507 init_revisions(&ref_list.revs, NULL);
508 cb.ref_list = &ref_list;
509 cb.ret = 0;
510 for_each_rawref(append_ref, &cb);
511 if (merge_filter != NO_FILTER) {
512 struct commit *filter;
513 filter = lookup_commit_reference_gently(merge_filter_ref, 0);
514 filter->object.flags |= UNINTERESTING;
515 add_pending_object(&ref_list.revs,
516 (struct object *) filter, "");
517 ref_list.revs.limited = 1;
518 prepare_revision_walk(&ref_list.revs);
519 if (verbose)
520 ref_list.maxwidth = calc_maxwidth(&ref_list);
521 }
522
523 qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);
524
525 detached = (detached && (kinds & REF_LOCAL_BRANCH));
526 if (detached)
527 show_detached(&ref_list);
528
529 for (i = 0; i < ref_list.index; i++) {
530 int current = !detached &&
531 (ref_list.list[i].kind == REF_LOCAL_BRANCH) &&
532 !strcmp(ref_list.list[i].name, head);
533 char *prefix = (kinds != REF_REMOTE_BRANCH &&
534 ref_list.list[i].kind == REF_REMOTE_BRANCH)
535 ? "remotes/" : "";
536 print_ref_item(&ref_list.list[i], ref_list.maxwidth, verbose,
537 abbrev, current, prefix);
538 }
539
540 free_ref_list(&ref_list);
541
542 if (cb.ret)
543 error(_("some refs could not be read"));
544
545 return cb.ret;
546 }
547
548 static void rename_branch(const char *oldname, const char *newname, int force)
549 {
550 struct strbuf oldref = STRBUF_INIT, newref = STRBUF_INIT, logmsg = STRBUF_INIT;
551 unsigned char sha1[20];
552 struct strbuf oldsection = STRBUF_INIT, newsection = STRBUF_INIT;
553 int recovery = 0;
554
555 if (!oldname)
556 die(_("cannot rename the current branch while not on any."));
557
558 if (strbuf_check_branch_ref(&oldref, oldname)) {
559 /*
560 * Bad name --- this could be an attempt to rename a
561 * ref that we used to allow to be created by accident.
562 */
563 if (resolve_ref(oldref.buf, sha1, 1, NULL))
564 recovery = 1;
565 else
566 die(_("Invalid branch name: '%s'"), oldname);
567 }
568
569 if (strbuf_check_branch_ref(&newref, newname))
570 die(_("Invalid branch name: '%s'"), newname);
571
572 if (resolve_ref(newref.buf, sha1, 1, NULL) && !force)
573 die(_("A branch named '%s' already exists."), newref.buf + 11);
574
575 strbuf_addf(&logmsg, "Branch: renamed %s to %s",
576 oldref.buf, newref.buf);
577
578 if (rename_ref(oldref.buf, newref.buf, logmsg.buf))
579 die(_("Branch rename failed"));
580 strbuf_release(&logmsg);
581
582 if (recovery)
583 warning(_("Renamed a misnamed branch '%s' away"), oldref.buf + 11);
584
585 /* no need to pass logmsg here as HEAD didn't really move */
586 if (!strcmp(oldname, head) && create_symref("HEAD", newref.buf, NULL))
587 die(_("Branch renamed to %s, but HEAD is not updated!"), newname);
588
589 strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
590 strbuf_release(&oldref);
591 strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
592 strbuf_release(&newref);
593 if (git_config_rename_section(oldsection.buf, newsection.buf) < 0)
594 die(_("Branch is renamed, but update of config-file failed"));
595 strbuf_release(&oldsection);
596 strbuf_release(&newsection);
597 }
598
599 static int opt_parse_merge_filter(const struct option *opt, const char *arg, int unset)
600 {
601 merge_filter = ((opt->long_name[0] == 'n')
602 ? SHOW_NOT_MERGED
603 : SHOW_MERGED);
604 if (unset)
605 merge_filter = SHOW_NOT_MERGED; /* b/c for --no-merged */
606 if (!arg)
607 arg = "HEAD";
608 if (get_sha1(arg, merge_filter_ref))
609 die(_("malformed object name %s"), arg);
610 return 0;
611 }
612
613 int cmd_branch(int argc, const char **argv, const char *prefix)
614 {
615 int delete = 0, rename = 0, force_create = 0;
616 int verbose = 0, abbrev = DEFAULT_ABBREV, detached = 0;
617 int reflog = 0;
618 enum branch_track track;
619 int kinds = REF_LOCAL_BRANCH;
620 struct commit_list *with_commit = NULL;
621
622 struct option options[] = {
623 OPT_GROUP("Generic options"),
624 OPT__VERBOSE(&verbose,
625 "show hash and subject, give twice for upstream branch"),
626 OPT_SET_INT('t', "track", &track, "set up tracking mode (see git-pull(1))",
627 BRANCH_TRACK_EXPLICIT),
628 OPT_SET_INT( 0, "set-upstream", &track, "change upstream info",
629 BRANCH_TRACK_OVERRIDE),
630 OPT__COLOR(&branch_use_color, "use colored output"),
631 OPT_SET_INT('r', NULL, &kinds, "act on remote-tracking branches",
632 REF_REMOTE_BRANCH),
633 {
634 OPTION_CALLBACK, 0, "contains", &with_commit, "commit",
635 "print only branches that contain the commit",
636 PARSE_OPT_LASTARG_DEFAULT,
637 parse_opt_with_commit, (intptr_t)"HEAD",
638 },
639 {
640 OPTION_CALLBACK, 0, "with", &with_commit, "commit",
641 "print only branches that contain the commit",
642 PARSE_OPT_HIDDEN | PARSE_OPT_LASTARG_DEFAULT,
643 parse_opt_with_commit, (intptr_t) "HEAD",
644 },
645 OPT__ABBREV(&abbrev),
646
647 OPT_GROUP("Specific git-branch actions:"),
648 OPT_SET_INT('a', NULL, &kinds, "list both remote-tracking and local branches",
649 REF_REMOTE_BRANCH | REF_LOCAL_BRANCH),
650 OPT_BIT('d', NULL, &delete, "delete fully merged branch", 1),
651 OPT_BIT('D', NULL, &delete, "delete branch (even if not merged)", 2),
652 OPT_BIT('m', NULL, &rename, "move/rename a branch and its reflog", 1),
653 OPT_BIT('M', NULL, &rename, "move/rename a branch, even if target exists", 2),
654 OPT_BOOLEAN('l', NULL, &reflog, "create the branch's reflog"),
655 OPT__FORCE(&force_create, "force creation (when already exists)"),
656 {
657 OPTION_CALLBACK, 0, "no-merged", &merge_filter_ref,
658 "commit", "print only not merged branches",
659 PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NONEG,
660 opt_parse_merge_filter, (intptr_t) "HEAD",
661 },
662 {
663 OPTION_CALLBACK, 0, "merged", &merge_filter_ref,
664 "commit", "print only merged branches",
665 PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NONEG,
666 opt_parse_merge_filter, (intptr_t) "HEAD",
667 },
668 OPT_END(),
669 };
670
671 if (argc == 2 && !strcmp(argv[1], "-h"))
672 usage_with_options(builtin_branch_usage, options);
673
674 git_config(git_branch_config, NULL);
675
676 if (branch_use_color == -1)
677 branch_use_color = git_use_color_default;
678
679 track = git_branch_track;
680
681 head = resolve_ref("HEAD", head_sha1, 0, NULL);
682 if (!head)
683 die(_("Failed to resolve HEAD as a valid ref."));
684 head = xstrdup(head);
685 if (!strcmp(head, "HEAD")) {
686 detached = 1;
687 } else {
688 if (prefixcmp(head, "refs/heads/"))
689 die(_("HEAD not found below refs/heads!"));
690 head += 11;
691 }
692 hashcpy(merge_filter_ref, head_sha1);
693
694 argc = parse_options(argc, argv, prefix, options, builtin_branch_usage,
695 0);
696 if (!!delete + !!rename + !!force_create > 1)
697 usage_with_options(builtin_branch_usage, options);
698
699 if (delete)
700 return delete_branches(argc, argv, delete > 1, kinds);
701 else if (argc == 0)
702 return print_ref_list(kinds, detached, verbose, abbrev, with_commit);
703 else if (rename && (argc == 1))
704 rename_branch(head, argv[0], rename > 1);
705 else if (rename && (argc == 2))
706 rename_branch(argv[0], argv[1], rename > 1);
707 else if (argc <= 2) {
708 if (kinds != REF_LOCAL_BRANCH)
709 die(_("-a and -r options to 'git branch' do not make sense with a branch name"));
710 create_branch(head, argv[0], (argc == 2) ? argv[1] : head,
711 force_create, reflog, track);
712 } else
713 usage_with_options(builtin_branch_usage, options);
714
715 return 0;
716 }