This replaces git-branch.sh with builtin-branch.c

The changes is basically a patch from Kristian Hgsberg, updated
to apply onto current 'next'

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Lars Hjemli 2006-10-23 23:27:45 +02:00 коммит произвёл Junio C Hamano
Родитель 3b463c3f02
Коммит c31820c26b
5 изменённых файлов: 223 добавлений и 132 удалений

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@ -156,7 +156,7 @@ BASIC_CFLAGS =
BASIC_LDFLAGS =
SCRIPT_SH = \
git-bisect.sh git-branch.sh git-checkout.sh \
git-bisect.sh git-checkout.sh \
git-cherry.sh git-clean.sh git-clone.sh git-commit.sh \
git-fetch.sh \
git-ls-remote.sh \
@ -267,6 +267,7 @@ BUILTIN_OBJS = \
builtin-add.o \
builtin-apply.o \
builtin-archive.o \
builtin-branch.o \
builtin-cat-file.o \
builtin-checkout-index.o \
builtin-check-ref-format.o \

219
builtin-branch.c Normal file
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@ -0,0 +1,219 @@
/*
* Builtin "git branch"
*
* Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
* Based on git-branch.sh by Junio C Hamano.
*/
#include "cache.h"
#include "refs.h"
#include "commit.h"
#include "builtin.h"
static const char builtin_branch_usage[] =
"git-branch (-d | -D) <branchname> | [-l] [-f] <branchname> [<start-point>] | [-r]";
static const char *head;
static unsigned char head_sha1[20];
static int in_merge_bases(const unsigned char *sha1,
struct commit *rev1,
struct commit *rev2)
{
struct commit_list *bases, *b;
int ret = 0;
bases = get_merge_bases(rev1, rev2, 1);
for (b = bases; b; b = b->next) {
if (!hashcmp(sha1, b->item->object.sha1)) {
ret = 1;
break;
}
}
free_commit_list(bases);
return ret;
}
static void delete_branches(int argc, const char **argv, int force)
{
struct commit *rev, *head_rev;
unsigned char sha1[20];
char *name;
int i;
head_rev = lookup_commit_reference(head_sha1);
for (i = 0; i < argc; i++) {
if (!strcmp(head, argv[i]))
die("Cannot delete the branch you are currently on.");
name = xstrdup(mkpath("refs/heads/%s", argv[i]));
if (!resolve_ref(name, sha1, 1, NULL))
die("Branch '%s' not found.", argv[i]);
rev = lookup_commit_reference(sha1);
if (!rev || !head_rev)
die("Couldn't look up commit objects.");
/* 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(sha1, rev, head_rev)) {
fprintf(stderr,
"The branch '%s' is not a strict subset of your current HEAD.\n"
"If you are sure you want to delete it, run 'git branch -D %s'.\n",
argv[i], argv[i]);
exit(1);
}
if (delete_ref(name, sha1))
printf("Error deleting branch '%s'\n", argv[i]);
else
printf("Deleted branch %s.\n", argv[i]);
free(name);
}
}
static int ref_index, ref_alloc;
static char **ref_list;
static int append_ref(const char *refname, const unsigned char *sha1, int flags,
void *cb_data)
{
if (ref_index >= ref_alloc) {
ref_alloc = alloc_nr(ref_alloc);
ref_list = xrealloc(ref_list, ref_alloc * sizeof(char *));
}
ref_list[ref_index++] = xstrdup(refname);
return 0;
}
static int ref_cmp(const void *r1, const void *r2)
{
return strcmp(*(char **)r1, *(char **)r2);
}
static void print_ref_list(int remote_only)
{
int i;
if (remote_only)
for_each_remote_ref(append_ref, NULL);
else
for_each_branch_ref(append_ref, NULL);
qsort(ref_list, ref_index, sizeof(char *), ref_cmp);
for (i = 0; i < ref_index; i++) {
if (!strcmp(ref_list[i], head))
printf("* %s\n", ref_list[i]);
else
printf(" %s\n", ref_list[i]);
}
}
static void create_branch(const char *name, const char *start,
int force, int reflog)
{
struct ref_lock *lock;
struct commit *commit;
unsigned char sha1[20];
char ref[PATH_MAX], msg[PATH_MAX + 20];
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 (!strcmp(head, name))
die("Cannot force update the current branch.");
}
if (get_sha1(start, sha1) ||
(commit = lookup_commit_reference(sha1)) == NULL)
die("Not a valid branch point: '%s'.", start);
hashcpy(sha1, commit->object.sha1);
lock = lock_any_ref_for_update(ref, NULL);
if (!lock)
die("Failed to lock ref for update: %s.", strerror(errno));
if (reflog) {
log_all_ref_updates = 1;
snprintf(msg, sizeof msg, "branch: Created from %s", start);
}
if (write_ref_sha1(lock, sha1, msg) < 0)
die("Failed to write ref: %s.", strerror(errno));
}
int cmd_branch(int argc, const char **argv, const char *prefix)
{
int delete = 0, force_delete = 0, force_create = 0, remote_only = 0;
int reflog = 0;
int i;
git_config(git_default_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, "-r")) {
remote_only = 1;
continue;
}
if (!strcmp(arg, "-l")) {
reflog = 1;
continue;
}
usage(builtin_branch_usage);
}
head = xstrdup(resolve_ref("HEAD", head_sha1, 0, NULL));
if (!head)
die("Failed to resolve HEAD as a valid ref.");
if (strncmp(head, "refs/heads/", 11))
die("HEAD not found below refs/heads!");
head += 11;
if (delete)
delete_branches(argc - i, argv + i, force_delete);
else if (i == argc)
print_ref_list(remote_only);
else if (i == argc - 1)
create_branch(argv[i], head, force_create, reflog);
else if (i == argc - 2)
create_branch(argv[i], argv[i + 1], force_create, reflog);
else
usage(builtin_branch_usage);
return 0;
}

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@ -15,6 +15,7 @@ extern int write_tree(unsigned char *sha1, int missing_ok, const char *prefix);
extern int cmd_add(int argc, const char **argv, const char *prefix);
extern int cmd_apply(int argc, const char **argv, const char *prefix);
extern int cmd_archive(int argc, const char **argv, const char *prefix);
extern int cmd_branch(int argc, const char **argv, const char *prefix);
extern int cmd_cat_file(int argc, const char **argv, const char *prefix);
extern int cmd_checkout_index(int argc, const char **argv, const char *prefix);
extern int cmd_check_ref_format(int argc, const char **argv, const char *prefix);

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@ -1,131 +0,0 @@
#!/bin/sh
USAGE='[-l] [(-d | -D) <branchname>] | [[-f] <branchname> [<start-point>]] | -r'
LONG_USAGE='If no arguments, show available branches and mark current branch with a star.
If one argument, create a new branch <branchname> based off of current HEAD.
If two arguments, create a new branch <branchname> based off of <start-point>.'
SUBDIRECTORY_OK='Yes'
. git-sh-setup
headref=$(git-symbolic-ref HEAD | sed -e 's|^refs/heads/||')
delete_branch () {
option="$1"
shift
for branch_name
do
case ",$headref," in
",$branch_name,")
die "Cannot delete the branch you are on." ;;
,,)
die "What branch are you on anyway?" ;;
esac
branch=$(git-show-ref --verify --hash -- "refs/heads/$branch_name") &&
branch=$(git-rev-parse --verify "$branch^0") ||
die "Seriously, what branch are you talking about?"
case "$option" in
-D)
;;
*)
mbs=$(git-merge-base -a "$branch" HEAD | tr '\012' ' ')
case " $mbs " in
*' '$branch' '*)
# the merge base of branch and HEAD contains branch --
# which means that the HEAD contains everything in both.
;;
*)
echo >&2 "The branch '$branch_name' is not a strict subset of your current HEAD.
If you are sure you want to delete it, run 'git branch -D $branch_name'."
exit 1
;;
esac
;;
esac
git update-ref -d "refs/heads/$branch_name" "$branch"
echo "Deleted branch $branch_name."
done
exit 0
}
ls_remote_branches () {
git-rev-parse --symbolic --all |
sed -ne 's|^refs/\(remotes/\)|\1|p' |
sort
}
force=
create_log=
while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac
do
case "$1" in
-d | -D)
delete_branch "$@"
exit
;;
-r)
ls_remote_branches
exit
;;
-f)
force="$1"
;;
-l)
create_log="yes"
;;
--)
shift
break
;;
-*)
usage
;;
esac
shift
done
case "$#" in
0)
git-rev-parse --symbolic --branches |
sort |
while read ref
do
if test "$headref" = "$ref"
then
pfx='*'
else
pfx=' '
fi
echo "$pfx $ref"
done
exit 0 ;;
1)
head=HEAD ;;
2)
head="$2^0" ;;
esac
branchname="$1"
rev=$(git-rev-parse --verify "$head") || exit
git-check-ref-format "heads/$branchname" ||
die "we do not like '$branchname' as a branch name."
prev=''
if git-show-ref --verify --quiet -- "refs/heads/$branchname"
then
if test '' = "$force"
then
die "$branchname already exists."
elif test "$branchname" = "$headref"
then
die "cannot force-update the current branch."
fi
prev=`git rev-parse --verify "refs/heads/$branchname"`
fi
if test "$create_log" = 'yes'
then
mkdir -p $(dirname "$GIT_DIR/logs/refs/heads/$branchname")
touch "$GIT_DIR/logs/refs/heads/$branchname"
fi
git update-ref -m "branch: Created from $head" "refs/heads/$branchname" "$rev" "$prev"

1
git.c
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@ -221,6 +221,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
{ "add", cmd_add, RUN_SETUP },
{ "apply", cmd_apply },
{ "archive", cmd_archive },
{ "branch", cmd_branch },
{ "cat-file", cmd_cat_file, RUN_SETUP },
{ "checkout-index", cmd_checkout_index, RUN_SETUP },
{ "check-ref-format", cmd_check_ref_format },