Make the MSVC projects use PDB/IDB files named after the project
[git/dscho.git] / builtin-branch.c
blob9f57992062314a3d8d168b5cfb6b3c6737605033
1 /*
2 * Builtin "git branch"
4 * Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
5 * Based on git-branch.sh by Junio C Hamano.
6 */
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"
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
27 #define REF_LOCAL_BRANCH 0x01
28 #define REF_REMOTE_BRANCH 0x02
30 static const char *head;
31 static unsigned char head_sha1[20];
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 */
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,
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];
56 static int parse_branch_color_slot(const char *var, int ofs)
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 die("bad config variable '%s'", var);
71 static int git_branch_config(const char *var, const char *value, void *cb)
73 if (!strcmp(var, "color.branch")) {
74 branch_use_color = git_config_colorbool(var, value, -1);
75 return 0;
77 if (!prefixcmp(var, "color.branch.")) {
78 int slot = parse_branch_color_slot(var, 13);
79 if (!value)
80 return config_error_nonbool(var);
81 color_parse(value, var, branch_colors[slot]);
82 return 0;
84 return git_color_default_config(var, value, cb);
87 static const char *branch_get_color(enum color_branch ix)
89 if (branch_use_color > 0)
90 return branch_colors[ix];
91 return "";
94 static int delete_branches(int argc, const char **argv, int force, int kinds)
96 struct commit *rev, *head_rev = head_rev;
97 unsigned char sha1[20];
98 char *name = NULL;
99 const char *fmt, *remote;
100 int i;
101 int ret = 0;
102 struct strbuf bname = STRBUF_INIT;
104 switch (kinds) {
105 case REF_REMOTE_BRANCH:
106 fmt = "refs/remotes/%s";
107 remote = "remote ";
108 force = 1;
109 break;
110 case REF_LOCAL_BRANCH:
111 fmt = "refs/heads/%s";
112 remote = "";
113 break;
114 default:
115 die("cannot use -a with -d");
118 if (!force) {
119 head_rev = lookup_commit_reference(head_sha1);
120 if (!head_rev)
121 die("Couldn't look up commit object for HEAD");
123 for (i = 0; i < argc; i++, strbuf_release(&bname)) {
124 strbuf_branchname(&bname, argv[i]);
125 if (kinds == REF_LOCAL_BRANCH && !strcmp(head, bname.buf)) {
126 error("Cannot delete the branch '%s' "
127 "which you are currently on.", bname.buf);
128 ret = 1;
129 continue;
132 free(name);
134 name = xstrdup(mkpath(fmt, bname.buf));
135 if (!resolve_ref(name, sha1, 1, NULL)) {
136 error("%sbranch '%s' not found.",
137 remote, bname.buf);
138 ret = 1;
139 continue;
142 rev = lookup_commit_reference(sha1);
143 if (!rev) {
144 error("Couldn't look up commit object for '%s'", name);
145 ret = 1;
146 continue;
149 /* This checks whether the merge bases of branch and
150 * HEAD contains branch -- which means that the HEAD
151 * contains everything in both.
154 if (!force &&
155 !in_merge_bases(rev, &head_rev, 1)) {
156 error("The branch '%s' is not an ancestor of "
157 "your current HEAD.\n"
158 "If you are sure you want to delete it, "
159 "run 'git branch -D %s'.", bname.buf, bname.buf);
160 ret = 1;
161 continue;
164 if (delete_ref(name, sha1, 0)) {
165 error("Error deleting %sbranch '%s'", remote,
166 bname.buf);
167 ret = 1;
168 } else {
169 struct strbuf buf = STRBUF_INIT;
170 printf("Deleted %sbranch %s (was %s).\n", remote,
171 bname.buf,
172 find_unique_abbrev(sha1, DEFAULT_ABBREV));
173 strbuf_addf(&buf, "branch.%s", bname.buf);
174 if (git_config_rename_section(buf.buf, NULL) < 0)
175 warning("Update of config-file failed");
176 strbuf_release(&buf);
180 free(name);
182 return(ret);
185 struct ref_item {
186 char *name;
187 char *dest;
188 unsigned int kind, len;
189 struct commit *commit;
192 struct ref_list {
193 struct rev_info revs;
194 int index, alloc, maxwidth, verbose, abbrev;
195 struct ref_item *list;
196 struct commit_list *with_commit;
197 int kinds;
200 static char *resolve_symref(const char *src, const char *prefix)
202 unsigned char sha1[20];
203 int flag;
204 const char *dst, *cp;
206 dst = resolve_ref(src, sha1, 0, &flag);
207 if (!(dst && (flag & REF_ISSYMREF)))
208 return NULL;
209 if (prefix && (cp = skip_prefix(dst, prefix)))
210 dst = cp;
211 return xstrdup(dst);
214 static int append_ref(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
216 struct ref_list *ref_list = (struct ref_list*)(cb_data);
217 struct ref_item *newitem;
218 struct commit *commit;
219 int kind, i;
220 const char *prefix, *orig_refname = refname;
222 static struct {
223 int kind;
224 const char *prefix;
225 int pfxlen;
226 } ref_kind[] = {
227 { REF_LOCAL_BRANCH, "refs/heads/", 11 },
228 { REF_REMOTE_BRANCH, "refs/remotes/", 13 },
231 /* Detect kind */
232 for (i = 0; i < ARRAY_SIZE(ref_kind); i++) {
233 prefix = ref_kind[i].prefix;
234 if (strncmp(refname, prefix, ref_kind[i].pfxlen))
235 continue;
236 kind = ref_kind[i].kind;
237 refname += ref_kind[i].pfxlen;
238 break;
240 if (ARRAY_SIZE(ref_kind) <= i)
241 return 0;
243 /* Don't add types the caller doesn't want */
244 if ((kind & ref_list->kinds) == 0)
245 return 0;
247 commit = NULL;
248 if (ref_list->verbose || ref_list->with_commit || merge_filter != NO_FILTER) {
249 commit = lookup_commit_reference_gently(sha1, 1);
250 if (!commit)
251 return error("branch '%s' does not point at a commit", refname);
253 /* Filter with with_commit if specified */
254 if (!is_descendant_of(commit, ref_list->with_commit))
255 return 0;
257 if (merge_filter != NO_FILTER)
258 add_pending_object(&ref_list->revs,
259 (struct object *)commit, refname);
262 /* Resize buffer */
263 if (ref_list->index >= ref_list->alloc) {
264 ref_list->alloc = alloc_nr(ref_list->alloc);
265 ref_list->list = xrealloc(ref_list->list,
266 ref_list->alloc * sizeof(struct ref_item));
269 /* Record the new item */
270 newitem = &(ref_list->list[ref_list->index++]);
271 newitem->name = xstrdup(refname);
272 newitem->kind = kind;
273 newitem->commit = commit;
274 newitem->len = strlen(refname);
275 newitem->dest = resolve_symref(orig_refname, prefix);
276 /* adjust for "remotes/" */
277 if (newitem->kind == REF_REMOTE_BRANCH &&
278 ref_list->kinds != REF_REMOTE_BRANCH)
279 newitem->len += 8;
280 if (newitem->len > ref_list->maxwidth)
281 ref_list->maxwidth = newitem->len;
283 return 0;
286 static void free_ref_list(struct ref_list *ref_list)
288 int i;
290 for (i = 0; i < ref_list->index; i++) {
291 free(ref_list->list[i].name);
292 free(ref_list->list[i].dest);
294 free(ref_list->list);
297 static int ref_cmp(const void *r1, const void *r2)
299 struct ref_item *c1 = (struct ref_item *)(r1);
300 struct ref_item *c2 = (struct ref_item *)(r2);
302 if (c1->kind != c2->kind)
303 return c1->kind - c2->kind;
304 return strcmp(c1->name, c2->name);
307 static void fill_tracking_info(struct strbuf *stat, const char *branch_name,
308 int show_upstream_ref)
310 int ours, theirs;
311 struct branch *branch = branch_get(branch_name);
313 if (!stat_tracking_info(branch, &ours, &theirs)) {
314 if (branch && branch->merge && branch->merge[0]->dst &&
315 show_upstream_ref)
316 strbuf_addf(stat, "[%s] ",
317 shorten_unambiguous_ref(branch->merge[0]->dst, 0));
318 return;
321 strbuf_addch(stat, '[');
322 if (show_upstream_ref)
323 strbuf_addf(stat, "%s: ",
324 shorten_unambiguous_ref(branch->merge[0]->dst, 0));
325 if (!ours)
326 strbuf_addf(stat, "behind %d] ", theirs);
327 else if (!theirs)
328 strbuf_addf(stat, "ahead %d] ", ours);
329 else
330 strbuf_addf(stat, "ahead %d, behind %d] ", ours, theirs);
333 static int matches_merge_filter(struct commit *commit)
335 int is_merged;
337 if (merge_filter == NO_FILTER)
338 return 1;
340 is_merged = !!(commit->object.flags & UNINTERESTING);
341 return (is_merged == (merge_filter == SHOW_MERGED));
344 static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
345 int abbrev, int current, char *prefix)
347 char c;
348 int color;
349 struct commit *commit = item->commit;
350 struct strbuf out = STRBUF_INIT, name = STRBUF_INIT;
352 if (!matches_merge_filter(commit))
353 return;
355 switch (item->kind) {
356 case REF_LOCAL_BRANCH:
357 color = BRANCH_COLOR_LOCAL;
358 break;
359 case REF_REMOTE_BRANCH:
360 color = BRANCH_COLOR_REMOTE;
361 break;
362 default:
363 color = BRANCH_COLOR_PLAIN;
364 break;
367 c = ' ';
368 if (current) {
369 c = '*';
370 color = BRANCH_COLOR_CURRENT;
373 strbuf_addf(&name, "%s%s", prefix, item->name);
374 if (verbose)
375 strbuf_addf(&out, "%c %s%-*s%s", c, branch_get_color(color),
376 maxwidth, name.buf,
377 branch_get_color(BRANCH_COLOR_RESET));
378 else
379 strbuf_addf(&out, "%c %s%s%s", c, branch_get_color(color),
380 name.buf, branch_get_color(BRANCH_COLOR_RESET));
382 if (item->dest)
383 strbuf_addf(&out, " -> %s", item->dest);
384 else if (verbose) {
385 struct strbuf subject = STRBUF_INIT, stat = STRBUF_INIT;
386 const char *sub = " **** invalid ref ****";
388 commit = item->commit;
389 if (commit && !parse_commit(commit)) {
390 pretty_print_commit(CMIT_FMT_ONELINE, commit,
391 &subject, 0, NULL, NULL, 0, 0);
392 sub = subject.buf;
395 if (item->kind == REF_LOCAL_BRANCH)
396 fill_tracking_info(&stat, item->name, verbose > 1);
398 strbuf_addf(&out, " %s %s%s",
399 find_unique_abbrev(item->commit->object.sha1, abbrev),
400 stat.buf, sub);
401 strbuf_release(&stat);
402 strbuf_release(&subject);
404 printf("%s\n", out.buf);
405 strbuf_release(&name);
406 strbuf_release(&out);
409 static int calc_maxwidth(struct ref_list *refs)
411 int i, w = 0;
412 for (i = 0; i < refs->index; i++) {
413 if (!matches_merge_filter(refs->list[i].commit))
414 continue;
415 if (refs->list[i].len > w)
416 w = refs->list[i].len;
418 return w;
422 static void show_detached(struct ref_list *ref_list)
424 struct commit *head_commit = lookup_commit_reference_gently(head_sha1, 1);
426 if (head_commit && is_descendant_of(head_commit, ref_list->with_commit)) {
427 struct ref_item item;
428 item.name = xstrdup("(no branch)");
429 item.len = strlen(item.name);
430 item.kind = REF_LOCAL_BRANCH;
431 item.dest = NULL;
432 item.commit = head_commit;
433 if (item.len > ref_list->maxwidth)
434 ref_list->maxwidth = item.len;
435 print_ref_item(&item, ref_list->maxwidth, ref_list->verbose, ref_list->abbrev, 1, "");
436 free(item.name);
440 static void print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit)
442 int i;
443 struct ref_list ref_list;
445 memset(&ref_list, 0, sizeof(ref_list));
446 ref_list.kinds = kinds;
447 ref_list.verbose = verbose;
448 ref_list.abbrev = abbrev;
449 ref_list.with_commit = with_commit;
450 if (merge_filter != NO_FILTER)
451 init_revisions(&ref_list.revs, NULL);
452 for_each_rawref(append_ref, &ref_list);
453 if (merge_filter != NO_FILTER) {
454 struct commit *filter;
455 filter = lookup_commit_reference_gently(merge_filter_ref, 0);
456 filter->object.flags |= UNINTERESTING;
457 add_pending_object(&ref_list.revs,
458 (struct object *) filter, "");
459 ref_list.revs.limited = 1;
460 prepare_revision_walk(&ref_list.revs);
461 if (verbose)
462 ref_list.maxwidth = calc_maxwidth(&ref_list);
465 qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);
467 detached = (detached && (kinds & REF_LOCAL_BRANCH));
468 if (detached)
469 show_detached(&ref_list);
471 for (i = 0; i < ref_list.index; i++) {
472 int current = !detached &&
473 (ref_list.list[i].kind == REF_LOCAL_BRANCH) &&
474 !strcmp(ref_list.list[i].name, head);
475 char *prefix = (kinds != REF_REMOTE_BRANCH &&
476 ref_list.list[i].kind == REF_REMOTE_BRANCH)
477 ? "remotes/" : "";
478 print_ref_item(&ref_list.list[i], ref_list.maxwidth, verbose,
479 abbrev, current, prefix);
482 free_ref_list(&ref_list);
485 static void rename_branch(const char *oldname, const char *newname, int force)
487 struct strbuf oldref = STRBUF_INIT, newref = STRBUF_INIT, logmsg = STRBUF_INIT;
488 unsigned char sha1[20];
489 struct strbuf oldsection = STRBUF_INIT, newsection = STRBUF_INIT;
490 int recovery = 0;
492 if (!oldname)
493 die("cannot rename the current branch while not on any.");
495 if (strbuf_check_branch_ref(&oldref, oldname)) {
497 * Bad name --- this could be an attempt to rename a
498 * ref that we used to allow to be created by accident.
500 if (resolve_ref(oldref.buf, sha1, 1, NULL))
501 recovery = 1;
502 else
503 die("Invalid branch name: '%s'", oldname);
506 if (strbuf_check_branch_ref(&newref, newname))
507 die("Invalid branch name: '%s'", newname);
509 if (resolve_ref(newref.buf, sha1, 1, NULL) && !force)
510 die("A branch named '%s' already exists.", newref.buf + 11);
512 strbuf_addf(&logmsg, "Branch: renamed %s to %s",
513 oldref.buf, newref.buf);
515 if (rename_ref(oldref.buf, newref.buf, logmsg.buf))
516 die("Branch rename failed");
517 strbuf_release(&logmsg);
519 if (recovery)
520 warning("Renamed a misnamed branch '%s' away", oldref.buf + 11);
522 /* no need to pass logmsg here as HEAD didn't really move */
523 if (!strcmp(oldname, head) && create_symref("HEAD", newref.buf, NULL))
524 die("Branch renamed to %s, but HEAD is not updated!", newname);
526 strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
527 strbuf_release(&oldref);
528 strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
529 strbuf_release(&newref);
530 if (git_config_rename_section(oldsection.buf, newsection.buf) < 0)
531 die("Branch is renamed, but update of config-file failed");
532 strbuf_release(&oldsection);
533 strbuf_release(&newsection);
536 static int opt_parse_merge_filter(const struct option *opt, const char *arg, int unset)
538 merge_filter = ((opt->long_name[0] == 'n')
539 ? SHOW_NOT_MERGED
540 : SHOW_MERGED);
541 if (unset)
542 merge_filter = SHOW_NOT_MERGED; /* b/c for --no-merged */
543 if (!arg)
544 arg = "HEAD";
545 if (get_sha1(arg, merge_filter_ref))
546 die("malformed object name %s", arg);
547 return 0;
550 int cmd_branch(int argc, const char **argv, const char *prefix)
552 int delete = 0, rename = 0, force_create = 0;
553 int verbose = 0, abbrev = DEFAULT_ABBREV, detached = 0;
554 int reflog = 0;
555 enum branch_track track;
556 int kinds = REF_LOCAL_BRANCH;
557 struct commit_list *with_commit = NULL;
559 struct option options[] = {
560 OPT_GROUP("Generic options"),
561 OPT__VERBOSE(&verbose),
562 OPT_SET_INT('t', "track", &track, "set up tracking mode (see git-pull(1))",
563 BRANCH_TRACK_EXPLICIT),
564 OPT_BOOLEAN( 0 , "color", &branch_use_color, "use colored output"),
565 OPT_SET_INT('r', NULL, &kinds, "act on remote-tracking branches",
566 REF_REMOTE_BRANCH),
568 OPTION_CALLBACK, 0, "contains", &with_commit, "commit",
569 "print only branches that contain the commit",
570 PARSE_OPT_LASTARG_DEFAULT,
571 parse_opt_with_commit, (intptr_t)"HEAD",
574 OPTION_CALLBACK, 0, "with", &with_commit, "commit",
575 "print only branches that contain the commit",
576 PARSE_OPT_HIDDEN | PARSE_OPT_LASTARG_DEFAULT,
577 parse_opt_with_commit, (intptr_t) "HEAD",
579 OPT__ABBREV(&abbrev),
581 OPT_GROUP("Specific git-branch actions:"),
582 OPT_SET_INT('a', NULL, &kinds, "list both remote-tracking and local branches",
583 REF_REMOTE_BRANCH | REF_LOCAL_BRANCH),
584 OPT_BIT('d', NULL, &delete, "delete fully merged branch", 1),
585 OPT_BIT('D', NULL, &delete, "delete branch (even if not merged)", 2),
586 OPT_BIT('m', NULL, &rename, "move/rename a branch and its reflog", 1),
587 OPT_BIT('M', NULL, &rename, "move/rename a branch, even if target exists", 2),
588 OPT_BOOLEAN('l', NULL, &reflog, "create the branch's reflog"),
589 OPT_BOOLEAN('f', "force", &force_create, "force creation (when already exists)"),
591 OPTION_CALLBACK, 0, "no-merged", &merge_filter_ref,
592 "commit", "print only not merged branches",
593 PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NONEG,
594 opt_parse_merge_filter, (intptr_t) "HEAD",
597 OPTION_CALLBACK, 0, "merged", &merge_filter_ref,
598 "commit", "print only merged branches",
599 PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NONEG,
600 opt_parse_merge_filter, (intptr_t) "HEAD",
602 OPT_END(),
605 git_config(git_branch_config, NULL);
607 if (branch_use_color == -1)
608 branch_use_color = git_use_color_default;
610 track = git_branch_track;
612 head = resolve_ref("HEAD", head_sha1, 0, NULL);
613 if (!head)
614 die("Failed to resolve HEAD as a valid ref.");
615 head = xstrdup(head);
616 if (!strcmp(head, "HEAD")) {
617 detached = 1;
618 } else {
619 if (prefixcmp(head, "refs/heads/"))
620 die("HEAD not found below refs/heads!");
621 head += 11;
623 hashcpy(merge_filter_ref, head_sha1);
625 argc = parse_options(argc, argv, prefix, options, builtin_branch_usage,
627 if (!!delete + !!rename + !!force_create > 1)
628 usage_with_options(builtin_branch_usage, options);
630 if (delete)
631 return delete_branches(argc, argv, delete > 1, kinds);
632 else if (argc == 0)
633 print_ref_list(kinds, detached, verbose, abbrev, with_commit);
634 else if (rename && (argc == 1))
635 rename_branch(head, argv[0], rename > 1);
636 else if (rename && (argc == 2))
637 rename_branch(argv[0], argv[1], rename > 1);
638 else if (argc <= 2)
639 create_branch(head, argv[0], (argc == 2) ? argv[1] : head,
640 force_create, reflog, track);
641 else
642 usage_with_options(builtin_branch_usage, options);
644 return 0;