8098a178b2
This adds the counterpart of git-update-ref that lets you read and create "symbolic refs". By default it uses a symbolic link to represent ".git/HEAD -> refs/heads/master", but it can be compiled to use the textfile symbolic ref. The places that did 'readlink .git/HEAD' and 'ln -s refs/heads/blah .git/HEAD' have been converted to use new git-symbolic-ref command, so that they can deal with either implementation. Signed-off-by: Junio C Hamano <junio@twinsun.com>
99 lines
2.1 KiB
Bash
Executable File
99 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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. git-sh-setup || die "Not a git archive"
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usage () {
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echo >&2 "usage: $(basename $0)"' [-d <branch>] | [<branch> [start-point]]
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If no arguments, show available branches and mark current branch with a star.
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If one argument, create a new branch <branchname> based off of current HEAD.
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If two arguments, create a new branch <branchname> based off of <start-point>.
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'
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exit 1
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}
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delete_branch () {
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option="$1" branch_name="$2"
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headref=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD |
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sed -e 's|^refs/heads/||')
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case ",$headref," in
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",$branch_name,")
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die "Cannot delete the branch you are on." ;;
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,,)
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die "What branch are you on anyway?" ;;
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esac
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branch=$(cat "$GIT_DIR/refs/heads/$branch_name") &&
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branch=$(git-rev-parse --verify "$branch^0") ||
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die "Seriously, what branch are you talking about?"
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case "$option" in
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-D)
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;;
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*)
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mbs=$(git-merge-base -a "$branch" HEAD | tr '\012' ' ')
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case " $mbs " in
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*' '$branch' '*)
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# the merge base of branch and HEAD contains branch --
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# which means that the HEAD contains everything in the HEAD.
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;;
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*)
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echo >&2 "The branch '$branch_name' is not a strict subset of your current HEAD.
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If you are sure you want to delete it, run 'git branch -D $branch_name'."
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exit 1
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;;
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esac
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;;
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esac
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rm -f "$GIT_DIR/refs/heads/$branch_name"
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echo "Deleted branch $branch_name."
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exit 0
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}
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while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac
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do
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case "$1" in
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-d | -D)
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delete_branch "$1" "$2"
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exit
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;;
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--)
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shift
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break
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;;
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-*)
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usage
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;;
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esac
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shift
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done
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case "$#" in
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0)
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headref=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD |
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sed -e 's|^refs/heads/||')
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git-rev-parse --symbolic --all |
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sed -ne 's|^refs/heads/||p' |
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sort |
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while read ref
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do
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if test "$headref" = "$ref"
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then
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pfx='*'
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else
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pfx=' '
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fi
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echo "$pfx $ref"
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done
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exit 0 ;;
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1)
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head=HEAD ;;
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2)
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head="$2^0" ;;
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esac
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branchname="$1"
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rev=$(git-rev-parse --verify "$head") || exit
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[ -e "$GIT_DIR/refs/heads/$branchname" ] && die "$branchname already exists"
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echo $rev > "$GIT_DIR/refs/heads/$branchname"
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