Move create_branch into a library file
You can also create branches, in exactly the same way, with checkout -b.
This introduces branch.{c,h} library files for doing porcelain-level
operations on branches (such as creating them with their appropriate
default configuration).
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
This commit is contained in:
Daniel Barkalow
Junio C Hamano
parent
e1b3a2cad7
commit
e496c00348
2
Makefile
2
Makefile
@ -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 \
|
||||
|
||||
140
branch.c
Normal file
140
branch.c
Normal file
@ -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);
|
||||
}
|
||||
8
branch.h
Normal file
8
branch.h
Normal file
@ -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
|
||||
138
builtin-branch.c
138
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);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user