Andrew's git - gitweb.git/blob

b48c32988fc16fe9d221cca18c1030bbaaa5838b
   1#!/bin/sh
   2
   3GIT_DIR=`git-rev-parse --git-dir` || exit $?
   4
   5usage () {
   6    echo >&2 "usage: $(basename $0)"' [-d <branch>] | [[-f] <branch> [start-point]]
   7
   8If no arguments, show available branches and mark current branch with a star.
   9If one argument, create a new branch <branchname> based off of current HEAD.
  10If two arguments, create a new branch <branchname> based off of <start-point>.
  11'
  12    exit 1
  13}
  14
  15headref=$(git-symbolic-ref HEAD | sed -e 's|^refs/heads/||')
  16
  17delete_branch () {
  18    option="$1"
  19    shift
  20    for branch_name
  21    do
  22        case ",$headref," in
  23        ",$branch_name,")
  24            die "Cannot delete the branch you are on." ;;
  25        ,,)
  26            die "What branch are you on anyway?" ;;
  27        esac
  28        branch=$(cat "$GIT_DIR/refs/heads/$branch_name") &&
  29            branch=$(git-rev-parse --verify "$branch^0") ||
  30                die "Seriously, what branch are you talking about?"
  31        case "$option" in
  32        -D)
  33            ;;
  34        *)
  35            mbs=$(git-merge-base -a "$branch" HEAD | tr '\012' ' ')
  36            case " $mbs " in
  37            *' '$branch' '*)
  38                # the merge base of branch and HEAD contains branch --
  39                # which means that the HEAD contains everything in the HEAD.
  40                ;;
  41            *)
  42                echo >&2 "The branch '$branch_name' is not a strict subset of your current HEAD.
  43    If you are sure you want to delete it, run 'git branch -D $branch_name'."
  44                exit 1
  45                ;;
  46            esac
  47            ;;
  48        esac
  49        rm -f "$GIT_DIR/refs/heads/$branch_name"
  50        echo "Deleted branch $branch_name."
  51    done
  52    exit 0
  53}
  54
  55force=
  56while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac
  57do
  58        case "$1" in
  59        -d | -D)
  60                delete_branch "$@"
  61                exit
  62                ;;
  63        -f)
  64                force="$1"
  65                ;;
  66        --)
  67                shift
  68                break
  69                ;;
  70        -*)
  71                usage
  72                ;;
  73        esac
  74        shift
  75done
  76
  77case "$#" in
  780)
  79        git-rev-parse --symbolic --all |
  80        sed -ne 's|^refs/heads/||p' |
  81        sort |
  82        while read ref
  83        do
  84                if test "$headref" = "$ref"
  85                then
  86                        pfx='*'
  87                else
  88                        pfx=' '
  89                fi
  90                echo "$pfx $ref"
  91        done
  92        exit 0 ;;
  931)
  94        head=HEAD ;;
  952)
  96        head="$2^0" ;;
  97esac
  98branchname="$1"
  99
 100rev=$(git-rev-parse --verify "$head") || exit
 101
 102git-check-ref-format "heads/$branchname" ||
 103        die "we do not like '$branchname' as a branch name."
 104
 105if [ -e "$GIT_DIR/refs/heads/$branchname" ]
 106then
 107        if test '' = "$force"
 108        then
 109                die "$branchname already exists."
 110        elif test "$branchname" = "$headref"
 111        then
 112                die "cannot force-update the current branch."
 113        fi
 114fi
 115git update-ref "refs/heads/$branchname" $rev