/*
* Builtin "git branch"
*
- * Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
+ * Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
* Based on git-branch.sh by Junio C Hamano.
*/
#include "refs.h"
#include "commit.h"
#include "builtin.h"
-
-static const char builtin_branch_usage[] =
- "git-branch [-r] (-d | -D) <branchname> | [-l] [-f] <branchname> [<start-point>] | (-m | -M) [<oldbranch>] <newbranch> | [--color | --no-color] [-r | -a] [-v [--abbrev=<length> | --no-abbrev]]";
+#include "remote.h"
+#include "parse-options.h"
+
+static const char * const builtin_branch_usage[] = {
+ "git-branch [options] [-r | -a]",
+ "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
static const char *head;
static unsigned char head_sha1[20];
+static int branch_track = 1;
+
static int branch_use_color;
static char branch_colors[][COLOR_MAXLEN] = {
"\033[m", /* reset */
die("bad config variable '%s'", var);
}
-int git_branch_config(const char *var, const char *value)
+static int git_branch_config(const char *var, const char *value)
{
if (!strcmp(var, "color.branch")) {
branch_use_color = git_config_colorbool(var, value);
color_parse(value, var, branch_colors[slot]);
return 0;
}
+ if (!strcmp(var, "branch.autosetupmerge"))
+ branch_track = git_config_bool(var, value);
+
return git_default_config(var, value);
}
-const char *branch_get_color(enum color_branch ix)
+static const char *branch_get_color(enum color_branch ix)
{
if (branch_use_color)
return branch_colors[ix];
unsigned char sha1[20];
char *name = NULL;
const char *fmt, *remote;
+ char section[PATH_MAX];
int i;
int ret = 0;
if (!force &&
!in_merge_bases(rev, &head_rev, 1)) {
- error("The branch '%s' is not a strict subset of "
+ 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]);
error("Error deleting %sbranch '%s'", remote,
argv[i]);
ret = 1;
- } else
+ } 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");
+ }
}
if (name)
char c;
int color;
struct commit *commit;
- char subject[256];
switch (item->kind) {
case REF_LOCAL_BRANCH:
}
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, ~0,
- subject, sizeof(subject), 0,
- NULL, NULL, 0);
- else
- strcpy(subject, " **** invalid ref ****");
+ 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), subject);
+ 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));
free_ref_list(&ref_list);
}
+struct tracking {
+ struct refspec spec;
+ char *src;
+ const char *remote;
+ int matches;
+};
+
+static int find_tracked_branch(struct remote *remote, void *priv)
+{
+ struct tracking *tracking = priv;
+
+ if (!remote_find_tracking(remote, &tracking->spec)) {
+ if (++tracking->matches == 1) {
+ tracking->src = tracking->spec.src;
+ tracking->remote = remote->name;
+ } else {
+ free(tracking->spec.src);
+ if (tracking->src) {
+ free(tracking->src);
+ tracking->src = NULL;
+ }
+ }
+ tracking->spec.src = NULL;
+ }
+
+ return 0;
+}
+
+
+/*
+ * This is called when new_ref is branched off of orig_ref, and tries
+ * to infer the settings for branch.<new_ref>.{remote,merge} from the
+ * config.
+ */
+static int setup_tracking(const char *new_ref, const char *orig_ref)
+{
+ char key[1024];
+ struct tracking tracking;
+
+ if (strlen(new_ref) > 1024 - 7 - 7 - 1)
+ return error("Tracking not set up: name too long: %s",
+ new_ref);
+
+ memset(&tracking, 0, sizeof(tracking));
+ tracking.spec.dst = (char *)orig_ref;
+ if (for_each_remote(find_tracked_branch, &tracking) ||
+ !tracking.matches)
+ return 1;
+
+ if (tracking.matches > 1)
+ return error("Not tracking: ambiguous information for ref %s",
+ orig_ref);
+
+ if (tracking.matches == 1) {
+ sprintf(key, "branch.%s.remote", new_ref);
+ git_config_set(key, tracking.remote ? tracking.remote : ".");
+ sprintf(key, "branch.%s.merge", new_ref);
+ git_config_set(key, tracking.src);
+ free(tracking.src);
+ printf("Branch %s set up to track remote branch %s.\n",
+ new_ref, orig_ref);
+ }
+
+ return 0;
+}
+
static void create_branch(const char *name, const char *start_name,
- unsigned char *start_sha1,
- int force, int reflog)
+ int force, int reflog, int track)
{
struct ref_lock *lock;
struct commit *commit;
unsigned char sha1[20];
- char ref[PATH_MAX], msg[PATH_MAX + 20];
+ char *real_ref, ref[PATH_MAX], msg[PATH_MAX + 20];
int forcing = 0;
snprintf(ref, sizeof ref, "refs/heads/%s", name);
forcing = 1;
}
- if (start_sha1)
- /* detached HEAD */
- hashcpy(sha1, start_sha1);
- else if (get_sha1(start_name, sha1))
+ real_ref = NULL;
+ if (get_sha1(start_name, sha1))
die("Not a valid object name: '%s'.", start_name);
+ switch (dwim_ref(start_name, strlen(start_name), sha1, &real_ref)) {
+ case 0:
+ /* Not branching from any existing branch */
+ real_ref = NULL;
+ break;
+ case 1:
+ /* Unique completion -- good */
+ break;
+ default:
+ die("Ambiguous object name: '%s'.", start_name);
+ break;
+ }
+
if ((commit = lookup_commit_reference(sha1)) == NULL)
die("Not a valid branch point: '%s'.", start_name);
hashcpy(sha1, commit->object.sha1);
- lock = lock_any_ref_for_update(ref, NULL);
+ lock = lock_any_ref_for_update(ref, NULL, 0);
if (!lock)
die("Failed to lock ref for update: %s.", strerror(errno));
snprintf(msg, sizeof msg, "branch: Created from %s",
start_name);
+ /* When branching off a remote branch, set up so that git-pull
+ automatically merges from there. So far, this is only done for
+ remotes registered via .git/config. */
+ if (real_ref && track)
+ setup_tracking(name, real_ref);
+
if (write_ref_sha1(lock, sha1, msg) < 0)
die("Failed to write ref: %s.", strerror(errno));
+
+ if (real_ref)
+ free(real_ref);
}
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.");
/* 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");
}
int cmd_branch(int argc, const char **argv, const char *prefix)
int delete = 0, force_delete = 0, force_create = 0;
int rename = 0, force_rename = 0;
int verbose = 0, abbrev = DEFAULT_ABBREV, detached = 0;
- int reflog = 0;
- int kinds = REF_LOCAL_BRANCH;
- int i;
+ int reflog = 0, track;
+ int kinds = REF_LOCAL_BRANCH, kind_remote = 0, kind_any = 0;
+
+ struct option options[] = {
+ OPT_GROUP("Generic options"),
+ OPT__VERBOSE(&verbose),
+ OPT_BOOLEAN( 0 , "track", &track, "set up tracking mode (see git-pull(1))"),
+ OPT_BOOLEAN( 0 , "color", &branch_use_color, "use colored output"),
+ OPT_BOOLEAN('r', NULL, &kind_remote, "act on remote-tracking branches"),
+ OPT__ABBREV(&abbrev),
+
+ OPT_GROUP("Specific git-branch actions:"),
+ OPT_BOOLEAN('a', NULL, &kind_any, "list both remote-tracking and local branches"),
+ OPT_BOOLEAN('d', NULL, &delete, "delete fully merged branch"),
+ OPT_BOOLEAN('D', NULL, &force_delete, "delete branch (even if not merged)"),
+ OPT_BOOLEAN('l', NULL, &reflog, "create the branch's reflog"),
+ OPT_BOOLEAN('f', NULL, &force_create, "force creation (when already exists)"),
+ OPT_BOOLEAN('m', NULL, &rename, "move/rename a branch and its reflog"),
+ OPT_BOOLEAN('M', NULL, &force_rename, "move/rename a branch, even if target exists"),
+ OPT_END(),
+ };
git_config(git_branch_config);
-
- for (i = 1; i < argc; i++) {
- const char *arg = argv[i];
-
- if (arg[0] != '-')
- break;
- if (!strcmp(arg, "--")) {
- i++;
- break;
- }
- if (!strcmp(arg, "-d")) {
- delete = 1;
- continue;
- }
- if (!strcmp(arg, "-D")) {
- delete = 1;
- force_delete = 1;
- continue;
- }
- if (!strcmp(arg, "-f")) {
- force_create = 1;
- continue;
- }
- if (!strcmp(arg, "-m")) {
- rename = 1;
- continue;
- }
- if (!strcmp(arg, "-M")) {
- rename = 1;
- force_rename = 1;
- continue;
- }
- if (!strcmp(arg, "-r")) {
- kinds = REF_REMOTE_BRANCH;
- continue;
- }
- if (!strcmp(arg, "-a")) {
- kinds = REF_REMOTE_BRANCH | REF_LOCAL_BRANCH;
- continue;
- }
- if (!strcmp(arg, "-l")) {
- reflog = 1;
- continue;
- }
- if (!prefixcmp(arg, "--no-abbrev")) {
- abbrev = 0;
- continue;
- }
- if (!prefixcmp(arg, "--abbrev=")) {
- abbrev = strtoul(arg + 9, NULL, 10);
- if (abbrev < MINIMUM_ABBREV)
- abbrev = MINIMUM_ABBREV;
- else if (abbrev > 40)
- abbrev = 40;
- continue;
- }
- if (!strcmp(arg, "-v")) {
- verbose = 1;
- continue;
- }
- if (!strcmp(arg, "--color")) {
- branch_use_color = 1;
- continue;
- }
- if (!strcmp(arg, "--no-color")) {
- branch_use_color = 0;
- continue;
- }
- usage(builtin_branch_usage);
- }
+ track = branch_track;
+ argc = parse_options(argc, argv, options, builtin_branch_usage, 0);
+
+ delete |= force_delete;
+ rename |= force_rename;
+ if (kind_remote)
+ kinds = REF_REMOTE_BRANCH;
+ if (kind_any)
+ kinds = REF_REMOTE_BRANCH | REF_LOCAL_BRANCH;
+ if (abbrev && abbrev < MINIMUM_ABBREV)
+ abbrev = MINIMUM_ABBREV;
+ else if (abbrev > 40)
+ abbrev = 40;
if ((delete && rename) || (delete && force_create) ||
(rename && force_create))
- usage(builtin_branch_usage);
+ usage_with_options(builtin_branch_usage, options);
- head = xstrdup(resolve_ref("HEAD", head_sha1, 0, NULL));
+ 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 {
+ } else {
if (prefixcmp(head, "refs/heads/"))
die("HEAD not found below refs/heads!");
head += 11;
}
if (delete)
- return delete_branches(argc - i, argv + i, force_delete, kinds);
- else if (i == argc)
+ return delete_branches(argc, argv, force_delete, kinds);
+ else if (argc == 0)
print_ref_list(kinds, detached, verbose, abbrev);
- else if (rename && (i == argc - 1))
- rename_branch(head, argv[i], force_rename);
- else if (rename && (i == argc - 2))
- rename_branch(argv[i], argv[i + 1], force_rename);
- else if (i == argc - 1)
- create_branch(argv[i], head, head_sha1, force_create, reflog);
- else if (i == argc - 2)
- create_branch(argv[i], argv[i+1], NULL, force_create, reflog);
+ else if (rename && (argc == 1))
+ rename_branch(head, argv[0], force_rename);
+ else if (rename && (argc == 2))
+ rename_branch(argv[0], argv[1], force_rename);
+ else if (argc <= 2)
+ create_branch(argv[0], (argc == 2) ? argv[1] : head,
+ force_create, reflog, track);
else
- usage(builtin_branch_usage);
+ usage_with_options(builtin_branch_usage, options);
return 0;
}