diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | branch.c | 140 | ||||
| -rw-r--r-- | branch.h | 8 | ||||
| -rw-r--r-- | builtin-branch.c | 138 |
4 files changed, 151 insertions, 137 deletions
@@ -317,7 +317,7 @@ LIB_OBJS = \ alloc.o merge-file.o path-list.o help.o unpack-trees.o $(DIFF_OBJS) \ color.o wt-status.o archive-zip.o archive-tar.o shallow.o utf8.o \ convert.o attr.o decorate.o progress.o mailmap.o symlinks.o remote.o \ - transport.o bundle.o walker.o parse-options.o ws.o archive.o + transport.o bundle.o walker.o parse-options.o ws.o archive.o branch.o BUILTIN_OBJS = \ builtin-add.o \ diff --git a/branch.c b/branch.c new file mode 100644 index 0000000000..45ab820c4a --- /dev/null +++ b/branch.c @@ -0,0 +1,140 @@ +#include "cache.h" +#include "branch.h" +#include "refs.h" +#include "remote.h" +#include "commit.h" + +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; +} + +void create_branch(const char *head, + const char *name, const char *start_name, + int force, int reflog, int track) +{ + struct ref_lock *lock; + struct commit *commit; + unsigned char sha1[20]; + char *real_ref, ref[PATH_MAX], msg[PATH_MAX + 20]; + int forcing = 0; + + snprintf(ref, sizeof ref, "refs/heads/%s", name); + if (check_ref_format(ref)) + die("'%s' is not a valid branch name.", name); + + if (resolve_ref(ref, sha1, 1, NULL)) { + if (!force) + die("A branch named '%s' already exists.", name); + else if (!is_bare_repository() && !strcmp(head, name)) + die("Cannot force update the current branch."); + forcing = 1; + } + + 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, 0); + if (!lock) + die("Failed to lock ref for update: %s.", strerror(errno)); + + if (reflog) + log_all_ref_updates = 1; + + if (forcing) + snprintf(msg, sizeof msg, "branch: Reset from %s", + start_name); + else + 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); +} diff --git a/branch.h b/branch.h new file mode 100644 index 0000000000..8bcd9dc217 --- /dev/null +++ b/branch.h @@ -0,0 +1,8 @@ +#ifndef BRANCH_H +#define BRANCH_H + +void create_branch(const char *head, + const char *name, const char *start_name, + int force, int reflog, int track); + +#endif diff --git a/builtin-branch.c b/builtin-branch.c index 089cae5929..1e0c9dea3f 100644 --- a/builtin-branch.c +++ b/builtin-branch.c @@ -12,6 +12,7 @@ #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]", @@ -356,141 +357,6 @@ static void print_ref_list(int kinds, int detached, int verbose, int abbrev, str 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, - int force, int reflog, int track) -{ - struct ref_lock *lock; - struct commit *commit; - unsigned char sha1[20]; - char *real_ref, ref[PATH_MAX], msg[PATH_MAX + 20]; - int forcing = 0; - - snprintf(ref, sizeof ref, "refs/heads/%s", name); - if (check_ref_format(ref)) - die("'%s' is not a valid branch name.", name); - - if (resolve_ref(ref, sha1, 1, NULL)) { - if (!force) - die("A branch named '%s' already exists.", name); - else if (!is_bare_repository() && !strcmp(head, name)) - die("Cannot force update the current branch."); - forcing = 1; - } - - 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, 0); - if (!lock) - die("Failed to lock ref for update: %s.", strerror(errno)); - - if (reflog) - log_all_ref_updates = 1; - - if (forcing) - snprintf(msg, sizeof msg, "branch: Reset from %s", - start_name); - else - 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]; @@ -611,7 +477,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix) else if (rename && (argc == 2)) rename_branch(argv[0], argv[1], rename > 1); else if (argc <= 2) - create_branch(argv[0], (argc == 2) ? argv[1] : head, + create_branch(head, argv[0], (argc == 2) ? argv[1] : head, force_create, reflog, track); else usage_with_options(builtin_branch_usage, options); |