#!/bin/sh
-. git-sh-setup || die "Not a git archive"
+USAGE='[(-d | -D) <branchname>] | [[-f] <branchname> [<start-point>]]'
+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>.'
-usage () {
- echo >&2 "usage: $(basename $0)"' [<branchname> [start-point]]
+SUBDIRECTORY_OK='Yes'
+. git-sh-setup
-If no arguments, show available branches and mark current branch with a star.
-If one argument, create a new branch <branchname> based off of current HEAD.
-If two arguments, create a new branch <branchname> based off of <start-point>.
-'
- exit 1
+headref=$(git-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 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 $branch_name'."
+ exit 1
+ ;;
+ esac
+ ;;
+ esac
+ rm -f "$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)
- headref=$(readlink "$GIT_DIR/HEAD" | sed -e 's|^refs/heads/||')
git-rev-parse --symbolic --all |
sed -ne 's|^refs/heads/||p' |
sort |
esac
branchname="$1"
-case "$branchname" in
--*)
- usage;;
-esac
-
rev=$(git-rev-parse --verify "$head") || exit
-[ -e "$GIT_DIR/refs/heads/$branchname" ] && die "$branchname already exists"
+git-check-ref-format "heads/$branchname" ||
+ die "we do not like '$branchname' as a branch name."
-echo $rev > "$GIT_DIR/refs/heads/$branchname"
+if [ -e "$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