Andrew's git - gitweb.git/blob

   1#!/bin/sh
   2
   3GIT_DIR=`git-rev-parse --git-dir` || exit $?
   4
   5die () {
   6    echo >&2 "$*"
   7    exit 1
   8}
   9
  10usage () {
  11    echo >&2 "usage: $(basename $0)"' [-d <branch>] | [[-f] <branch> [start-point]]
  12
  13If no arguments, show available branches and mark current branch with a star.
  14If one argument, create a new branch <branchname> based off of current HEAD.
  15If two arguments, create a new branch <branchname> based off of <start-point>.
  16'
  17    exit 1
  18}
  19
  20headref=$(git-symbolic-ref HEAD | sed -e 's|^refs/heads/||')
  21
  22delete_branch () {
  23    option="$1"
  24    shift
  25    for branch_name
  26    do
  27        case ",$headref," in
  28        ",$branch_name,")
  29            die "Cannot delete the branch you are on." ;;
  30        ,,)
  31            die "What branch are you on anyway?" ;;
  32        esac
  33        branch=$(cat "$GIT_DIR/refs/heads/$branch_name") &&
  34            branch=$(git-rev-parse --verify "$branch^0") ||
  35                die "Seriously, what branch are you talking about?"
  36        case "$option" in
  37        -D)
  38            ;;
  39        *)
  40            mbs=$(git-merge-base -a "$branch" HEAD | tr '\012' ' ')
  41            case " $mbs " in
  42            *' '$branch' '*)
  43                # the merge base of branch and HEAD contains branch --
  44                # which means that the HEAD contains everything in the HEAD.
  45                ;;
  46            *)
  47                echo >&2 "The branch '$branch_name' is not a strict subset of your current HEAD.
  48    If you are sure you want to delete it, run 'git branch -D $branch_name'."
  49                exit 1
  50                ;;
  51            esac
  52            ;;
  53        esac
  54        rm -f "$GIT_DIR/refs/heads/$branch_name"
  55        echo "Deleted branch $branch_name."
  56    done
  57    exit 0
  58}
  59
  60force=
  61while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac
  62do
  63        case "$1" in
  64        -d | -D)
  65                delete_branch "$@"
  66                exit
  67                ;;
  68        -f)
  69                force="$1"
  70                ;;
  71        --)
  72                shift
  73                break
  74                ;;
  75        -*)
  76                usage
  77                ;;
  78        esac
  79        shift
  80done
  81
  82case "$#" in
  830)
  84        git-rev-parse --symbolic --all |
  85        sed -ne 's|^refs/heads/||p' |
  86        sort |
  87        while read ref
  88        do
  89                if test "$headref" = "$ref"
  90                then
  91                        pfx='*'
  92                else
  93                        pfx=' '
  94                fi
  95                echo "$pfx $ref"
  96        done
  97        exit 0 ;;
  981)
  99        head=HEAD ;;
 1002)
 101        head="$2^0" ;;
 102esac
 103branchname="$1"
 104
 105rev=$(git-rev-parse --verify "$head") || exit
 106
 107git-check-ref-format "heads/$branchname" ||
 108        die "we do not like '$branchname' as a branch name."
 109
 110if [ -e "$GIT_DIR/refs/heads/$branchname" ]
 111then
 112        if test '' = "$force"
 113        then
 114                die "$branchname already exists."
 115        elif test "$branchname" = "$headref"
 116        then
 117                die "cannot force-update the current branch."
 118        fi
 119fi
 120git update-ref "refs/heads/$branchname" $rev