Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
tag: v1.5.6
Fetching contributors…

Octocat-spinner-32-eaf2f5

Cannot retrieve contributors at this time

file 502 lines (430 sloc) 13.408 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501
/*
* Builtin "git branch"
*
* Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
* Based on git-branch.sh by Junio C Hamano.
*/

#include "cache.h"
#include "color.h"
#include "refs.h"
#include "commit.h"
#include "builtin.h"
#include "remote.h"
#include "parse-options.h"
#include "branch.h"

static const char * const builtin_branch_usage[] = {
"git-branch [options] [-r | -a] [--merged | --no-merged]",
"git-branch [options] [-l] [-f] <branchname> [<start-point>]",
"git-branch [options] [-r] (-d | -D) <branchname>",
"git-branch [options] (-m | -M) [<oldbranch>] <newbranch>",
NULL
};

#define REF_UNKNOWN_TYPE 0x00
#define REF_LOCAL_BRANCH 0x01
#define REF_REMOTE_BRANCH 0x02
#define REF_TAG 0x04

static const char *head;
static unsigned char head_sha1[20];

static int branch_use_color = -1;
static char branch_colors[][COLOR_MAXLEN] = {
"\033[m", /* reset */
"", /* PLAIN (normal) */
"\033[31m", /* REMOTE (red) */
"", /* LOCAL (normal) */
"\033[32m", /* CURRENT (green) */
};
enum color_branch {
COLOR_BRANCH_RESET = 0,
COLOR_BRANCH_PLAIN = 1,
COLOR_BRANCH_REMOTE = 2,
COLOR_BRANCH_LOCAL = 3,
COLOR_BRANCH_CURRENT = 4,
};

static int mergefilter = -1;

static int parse_branch_color_slot(const char *var, int ofs)
{
if (!strcasecmp(var+ofs, "plain"))
return COLOR_BRANCH_PLAIN;
if (!strcasecmp(var+ofs, "reset"))
return COLOR_BRANCH_RESET;
if (!strcasecmp(var+ofs, "remote"))
return COLOR_BRANCH_REMOTE;
if (!strcasecmp(var+ofs, "local"))
return COLOR_BRANCH_LOCAL;
if (!strcasecmp(var+ofs, "current"))
return COLOR_BRANCH_CURRENT;
die("bad config variable '%s'", var);
}

static int git_branch_config(const char *var, const char *value, void *cb)
{
if (!strcmp(var, "color.branch")) {
branch_use_color = git_config_colorbool(var, value, -1);
return 0;
}
if (!prefixcmp(var, "color.branch.")) {
int slot = parse_branch_color_slot(var, 13);
if (!value)
return config_error_nonbool(var);
color_parse(value, var, branch_colors[slot]);
return 0;
}
return git_color_default_config(var, value, cb);
}

static const char *branch_get_color(enum color_branch ix)
{
if (branch_use_color > 0)
return branch_colors[ix];
return "";
}

static int delete_branches(int argc, const char **argv, int force, int kinds)
{
struct commit *rev, *head_rev = head_rev;
unsigned char sha1[20];
char *name = NULL;
const char *fmt, *remote;
char section[PATH_MAX];
int i;
int ret = 0;

switch (kinds) {
case REF_REMOTE_BRANCH:
fmt = "refs/remotes/%s";
remote = "remote ";
force = 1;
break;
case REF_LOCAL_BRANCH:
fmt = "refs/heads/%s";
remote = "";
break;
default:
die("cannot use -a with -d");
}

if (!force) {
head_rev = lookup_commit_reference(head_sha1);
if (!head_rev)
die("Couldn't look up commit object for HEAD");
}
for (i = 0; i < argc; i++) {
if (kinds == REF_LOCAL_BRANCH && !strcmp(head, argv[i])) {
error("Cannot delete the branch '%s' "
"which you are currently on.", argv[i]);
ret = 1;
continue;
}

free(name);

name = xstrdup(mkpath(fmt, argv[i]));
if (!resolve_ref(name, sha1, 1, NULL)) {
error("%sbranch '%s' not found.",
remote, argv[i]);
ret = 1;
continue;
}

rev = lookup_commit_reference(sha1);
if (!rev) {
error("Couldn't look up commit object for '%s'", name);
ret = 1;
continue;
}

/* This checks whether the merge bases of branch and
* HEAD contains branch -- which means that the HEAD
* contains everything in both.
*/

if (!force &&
!in_merge_bases(rev, &head_rev, 1)) {
error("The branch '%s' is not an ancestor of "
"your current HEAD.\n"
"If you are sure you want to delete it, "
"run 'git branch -D %s'.", argv[i], argv[i]);
ret = 1;
continue;
}

if (delete_ref(name, sha1)) {
error("Error deleting %sbranch '%s'", remote,
argv[i]);
ret = 1;
} else {
printf("Deleted %sbranch %s.\n", remote, argv[i]);
snprintf(section, sizeof(section), "branch.%s",
argv[i]);
if (git_config_rename_section(section, NULL) < 0)
warning("Update of config-file failed");
}
}

free(name);

return(ret);
}

struct ref_item {
char *name;
unsigned int kind;
unsigned char sha1[20];
};

struct ref_list {
int index, alloc, maxwidth;
struct ref_item *list;
struct commit_list *with_commit;
int kinds;
};

static int has_commit(const unsigned char *sha1, struct commit_list *with_commit)
{
struct commit *commit;

if (!with_commit)
return 1;
commit = lookup_commit_reference_gently(sha1, 1);
if (!commit)
return 0;
while (with_commit) {
struct commit *other;

other = with_commit->item;
with_commit = with_commit->next;
if (in_merge_bases(other, &commit, 1))
return 1;
}
return 0;
}

static int append_ref(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
{
struct ref_list *ref_list = (struct ref_list*)(cb_data);
struct ref_item *newitem;
int kind = REF_UNKNOWN_TYPE;
int len;
static struct commit_list branch;

/* Detect kind */
if (!prefixcmp(refname, "refs/heads/")) {
kind = REF_LOCAL_BRANCH;
refname += 11;
} else if (!prefixcmp(refname, "refs/remotes/")) {
kind = REF_REMOTE_BRANCH;
refname += 13;
} else if (!prefixcmp(refname, "refs/tags/")) {
kind = REF_TAG;
refname += 10;
}

/* Filter with with_commit if specified */
if (!has_commit(sha1, ref_list->with_commit))
return 0;

/* Don't add types the caller doesn't want */
if ((kind & ref_list->kinds) == 0)
return 0;

if (mergefilter > -1) {
branch.item = lookup_commit_reference_gently(sha1, 1);
if (!branch.item)
die("Unable to lookup tip of branch %s", refname);
if (mergefilter == 0 && has_commit(head_sha1, &branch))
return 0;
if (mergefilter == 1 && !has_commit(head_sha1, &branch))
return 0;
}

/* Resize buffer */
if (ref_list->index >= ref_list->alloc) {
ref_list->alloc = alloc_nr(ref_list->alloc);
ref_list->list = xrealloc(ref_list->list,
ref_list->alloc * sizeof(struct ref_item));
}

/* Record the new item */
newitem = &(ref_list->list[ref_list->index++]);
newitem->name = xstrdup(refname);
newitem->kind = kind;
hashcpy(newitem->sha1, sha1);
len = strlen(newitem->name);
if (len > ref_list->maxwidth)
ref_list->maxwidth = len;

return 0;
}

static void free_ref_list(struct ref_list *ref_list)
{
int i;

for (i = 0; i < ref_list->index; i++)
free(ref_list->list[i].name);
free(ref_list->list);
}

static int ref_cmp(const void *r1, const void *r2)
{
struct ref_item *c1 = (struct ref_item *)(r1);
struct ref_item *c2 = (struct ref_item *)(r2);

if (c1->kind != c2->kind)
return c1->kind - c2->kind;
return strcmp(c1->name, c2->name);
}

static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
int abbrev, int current)
{
char c;
int color;
struct commit *commit;

switch (item->kind) {
case REF_LOCAL_BRANCH:
color = COLOR_BRANCH_LOCAL;
break;
case REF_REMOTE_BRANCH:
color = COLOR_BRANCH_REMOTE;
break;
default:
color = COLOR_BRANCH_PLAIN;
break;
}

c = ' ';
if (current) {
c = '*';
color = COLOR_BRANCH_CURRENT;
}

if (verbose) {
struct strbuf subject;
const char *sub = " **** invalid ref ****";

strbuf_init(&subject, 0);

commit = lookup_commit(item->sha1);
if (commit && !parse_commit(commit)) {
pretty_print_commit(CMIT_FMT_ONELINE, commit,
&subject, 0, NULL, NULL, 0, 0);
sub = subject.buf;
}
printf("%c %s%-*s%s %s %s\n", c, branch_get_color(color),
maxwidth, item->name,
branch_get_color(COLOR_BRANCH_RESET),
find_unique_abbrev(item->sha1, abbrev), sub);
strbuf_release(&subject);
} else {
printf("%c %s%s%s\n", c, branch_get_color(color), item->name,
branch_get_color(COLOR_BRANCH_RESET));
}
}

static void print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit)
{
int i;
struct ref_list ref_list;

memset(&ref_list, 0, sizeof(ref_list));
ref_list.kinds = kinds;
ref_list.with_commit = with_commit;
for_each_ref(append_ref, &ref_list);

qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);

detached = (detached && (kinds & REF_LOCAL_BRANCH));
if (detached && has_commit(head_sha1, with_commit)) {
struct ref_item item;
item.name = xstrdup("(no branch)");
item.kind = REF_LOCAL_BRANCH;
hashcpy(item.sha1, head_sha1);
if (strlen(item.name) > ref_list.maxwidth)
ref_list.maxwidth = strlen(item.name);
print_ref_item(&item, ref_list.maxwidth, verbose, abbrev, 1);
free(item.name);
}

for (i = 0; i < ref_list.index; i++) {
int current = !detached &&
(ref_list.list[i].kind == REF_LOCAL_BRANCH) &&
!strcmp(ref_list.list[i].name, head);
print_ref_item(&ref_list.list[i], ref_list.maxwidth, verbose,
abbrev, current);
}

free_ref_list(&ref_list);
}

static void rename_branch(const char *oldname, const char *newname, int force)
{
char oldref[PATH_MAX], newref[PATH_MAX], logmsg[PATH_MAX*2 + 100];
unsigned char sha1[20];
char oldsection[PATH_MAX], newsection[PATH_MAX];

if (!oldname)
die("cannot rename the current branch while not on any.");

if (snprintf(oldref, sizeof(oldref), "refs/heads/%s", oldname) > sizeof(oldref))
die("Old branchname too long");

if (check_ref_format(oldref))
die("Invalid branch name: %s", oldref);

if (snprintf(newref, sizeof(newref), "refs/heads/%s", newname) > sizeof(newref))
die("New branchname too long");

if (check_ref_format(newref))
die("Invalid branch name: %s", newref);

if (resolve_ref(newref, sha1, 1, NULL) && !force)
die("A branch named '%s' already exists.", newname);

snprintf(logmsg, sizeof(logmsg), "Branch: renamed %s to %s",
oldref, newref);

if (rename_ref(oldref, newref, logmsg))
die("Branch rename failed");

/* no need to pass logmsg here as HEAD didn't really move */
if (!strcmp(oldname, head) && create_symref("HEAD", newref, NULL))
die("Branch renamed to %s, but HEAD is not updated!", newname);

snprintf(oldsection, sizeof(oldsection), "branch.%s", oldref + 11);
snprintf(newsection, sizeof(newsection), "branch.%s", newref + 11);
if (git_config_rename_section(oldsection, newsection) < 0)
die("Branch is renamed, but update of config-file failed");
}

static int opt_parse_with_commit(const struct option *opt, const char *arg, int unset)
{
unsigned char sha1[20];
struct commit *commit;

if (!arg)
return -1;
if (get_sha1(arg, sha1))
die("malformed object name %s", arg);
commit = lookup_commit_reference(sha1);
if (!commit)
die("no such commit %s", arg);
commit_list_insert(commit, opt->value);
return 0;
}

int cmd_branch(int argc, const char **argv, const char *prefix)
{
int delete = 0, rename = 0, force_create = 0;
int verbose = 0, abbrev = DEFAULT_ABBREV, detached = 0;
int reflog = 0;
enum branch_track track;
int kinds = REF_LOCAL_BRANCH;
struct commit_list *with_commit = NULL;

struct option options[] = {
OPT_GROUP("Generic options"),
OPT__VERBOSE(&verbose),
OPT_SET_INT( 0 , "track", &track, "set up tracking mode (see git-pull(1))",
BRANCH_TRACK_EXPLICIT),
OPT_BOOLEAN( 0 , "color", &branch_use_color, "use colored output"),
OPT_SET_INT('r', NULL, &kinds, "act on remote-tracking branches",
REF_REMOTE_BRANCH),
OPT_CALLBACK(0, "contains", &with_commit, "commit",
"print only branches that contain the commit",
opt_parse_with_commit),
{
OPTION_CALLBACK, 0, "with", &with_commit, "commit",
"print only branches that contain the commit",
PARSE_OPT_HIDDEN, opt_parse_with_commit,
},
OPT__ABBREV(&abbrev),

OPT_GROUP("Specific git-branch actions:"),
OPT_SET_INT('a', NULL, &kinds, "list both remote-tracking and local branches",
REF_REMOTE_BRANCH | REF_LOCAL_BRANCH),
OPT_BIT('d', NULL, &delete, "delete fully merged branch", 1),
OPT_BIT('D', NULL, &delete, "delete branch (even if not merged)", 2),
OPT_BIT('m', NULL, &rename, "move/rename a branch and its reflog", 1),
OPT_BIT('M', NULL, &rename, "move/rename a branch, even if target exists", 2),
OPT_BOOLEAN('l', NULL, &reflog, "create the branch's reflog"),
OPT_BOOLEAN('f', NULL, &force_create, "force creation (when already exists)"),
OPT_SET_INT(0, "merged", &mergefilter, "list only merged branches", 1),
OPT_END(),
};

git_config(git_branch_config, NULL);

if (branch_use_color == -1)
branch_use_color = git_use_color_default;

track = git_branch_track;
argc = parse_options(argc, argv, options, builtin_branch_usage, 0);
if (!!delete + !!rename + !!force_create > 1)
usage_with_options(builtin_branch_usage, options);

head = resolve_ref("HEAD", head_sha1, 0, NULL);
if (!head)
die("Failed to resolve HEAD as a valid ref.");
head = xstrdup(head);
if (!strcmp(head, "HEAD")) {
detached = 1;
} else {
if (prefixcmp(head, "refs/heads/"))
die("HEAD not found below refs/heads!");
head += 11;
}

if (delete)
return delete_branches(argc, argv, delete > 1, kinds);
else if (argc == 0)
print_ref_list(kinds, detached, verbose, abbrev, with_commit);
else if (rename && (argc == 1))
rename_branch(head, argv[0], rename > 1);
else if (rename && (argc == 2))
rename_branch(argv[0], argv[1], rename > 1);
else if (argc <= 2)
create_branch(head, argv[0], (argc == 2) ? argv[1] : head,
force_create, reflog, track);
else
usage_with_options(builtin_branch_usage, options);

return 0;
}
Something went wrong with that request. Please try again.