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git/git-branch.sh
Junio C Hamano ae2b0f1518 git-sh-setup: die if outside git repository.
Now all the users of this script detect its exit status and die,
complaining that it is outside git repository.  So move the code
that dies from all callers to git-sh-setup script.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-25 13:49:17 -08:00

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#!/bin/sh
. git-sh-setup
usage () {
echo >&2 "usage: $(basename $0)"' [-d <branch>] | [[-f] <branch> [start-point]]
If no arguments, show available branches and mark current branch with a star.
If one argument, create a new branch <branchname> based off of current HEAD.
If two arguments, create a new branch <branchname> based off of <start-point>.
'
exit 1
}
headref=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD |
sed -e 's|^refs/heads/||')
delete_branch () {
option="$1"
shift
for branch_name
do
case ",$headref," in
",$branch_name,")
die "Cannot delete the branch you are on." ;;
,,)
die "What branch are you on anyway?" ;;
esac
branch=$(cat "$GIT_DIR/refs/heads/$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 the HEAD.
;;
*)
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 $branch_name'."
exit 1
;;
esac
;;
esac
rm -f "$GIT_DIR/refs/heads/$branch_name"
echo "Deleted branch $branch_name."
done
exit 0
}
force=
while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac
do
case "$1" in
-d | -D)
delete_branch "$@"
exit
;;
-f)
force="$1"
;;
--)
shift
break
;;
-*)
usage
;;
esac
shift
done
case "$#" in
0)
git-rev-parse --symbolic --all |
sed -ne 's|^refs/heads/||p' |
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 '$branchname' as a branch name."
if [ -e "$GIT_DIR/refs/heads/$branchname" ]
then
if test '' = "$force"
then
die "$branchname already exists."
elif test "$branchname" = "$headref"
then
die "cannot force-update the current branch."
fi
fi
git update-ref "refs/heads/$branchname" $rev