Andrew's git - gitweb.git/blob

   1#!/bin/sh
   2
   3. git-sh-setup
   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_DIR="$GIT_DIR" git-symbolic-ref HEAD |
  16        sed -e 's|^refs/heads/||')
  17
  18delete_branch () {
  19    option="$1"
  20    shift
  21    for branch_name
  22    do
  23        case ",$headref," in
  24        ",$branch_name,")
  25            die "Cannot delete the branch you are on." ;;
  26        ,,)
  27            die "What branch are you on anyway?" ;;
  28        esac
  29        branch=$(cat "$GIT_DIR/refs/heads/$branch_name") &&
  30            branch=$(git-rev-parse --verify "$branch^0") ||
  31                die "Seriously, what branch are you talking about?"
  32        case "$option" in
  33        -D)
  34            ;;
  35        *)
  36            mbs=$(git-merge-base -a "$branch" HEAD | tr '\012' ' ')
  37            case " $mbs " in
  38            *' '$branch' '*)
  39                # the merge base of branch and HEAD contains branch --
  40                # which means that the HEAD contains everything in the HEAD.
  41                ;;
  42            *)
  43                echo >&2 "The branch '$branch_name' is not a strict subset of your current HEAD.
  44    If you are sure you want to delete it, run 'git branch -D $branch_name'."
  45                exit 1
  46                ;;
  47            esac
  48            ;;
  49        esac
  50        rm -f "$GIT_DIR/refs/heads/$branch_name"
  51        echo "Deleted branch $branch_name."
  52    done
  53    exit 0
  54}
  55
  56force=
  57while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac
  58do
  59        case "$1" in
  60        -d | -D)
  61                delete_branch "$@"
  62                exit
  63                ;;
  64        -f)
  65                force="$1"
  66                ;;
  67        --)
  68                shift
  69                break
  70                ;;
  71        -*)
  72                usage
  73                ;;
  74        esac
  75        shift
  76done
  77
  78case "$#" in
  790)
  80        git-rev-parse --symbolic --all |
  81        sed -ne 's|^refs/heads/||p' |
  82        sort |
  83        while read ref
  84        do
  85                if test "$headref" = "$ref"
  86                then
  87                        pfx='*'
  88                else
  89                        pfx=' '
  90                fi
  91                echo "$pfx $ref"
  92        done
  93        exit 0 ;;
  941)
  95        head=HEAD ;;
  962)
  97        head="$2^0" ;;
  98esac
  99branchname="$1"
 100
 101rev=$(git-rev-parse --verify "$head") || exit
 102
 103git-check-ref-format "heads/$branchname" ||
 104        die "we do not like '$branchname' as a branch name."
 105
 106if [ -e "$GIT_DIR/refs/heads/$branchname" ]
 107then
 108        if test '' = "$force"
 109        then
 110                die "$branchname already exists."
 111        elif test "$branchname" = "$headref"
 112        then
 113                die "cannot force-update the current branch."
 114        fi
 115fi
 116git update-ref "refs/heads/$branchname" $rev
 117