Andrew's git - gitweb.git/blob

   1#!/bin/sh
   2
   3. git-sh-setup || die "Not a git archive"
   4
   5usage () {
   6    echo >&2 "usage: $(basename $0)"' [-d <branch>] | [<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
  15delete_branch () {
  16    option="$1" branch_name="$2"
  17    headref=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD |
  18               sed -e 's|^refs/heads/||')
  19    case ",$headref," in
  20    ",$branch_name,")
  21        die "Cannot delete the branch you are on." ;;
  22    ,,)
  23        die "What branch are you on anyway?" ;;
  24    esac
  25    branch=$(cat "$GIT_DIR/refs/heads/$branch_name") &&
  26        branch=$(git-rev-parse --verify "$branch^0") ||
  27            die "Seriously, what branch are you talking about?"
  28    case "$option" in
  29    -D)
  30        ;;
  31    *)
  32        mbs=$(git-merge-base -a "$branch" HEAD | tr '\012' ' ')
  33        case " $mbs " in
  34        *' '$branch' '*)
  35            # the merge base of branch and HEAD contains branch --
  36            # which means that the HEAD contains everything in the HEAD.
  37            ;;
  38        *)
  39            echo >&2 "The branch '$branch_name' is not a strict subset of your current HEAD.
  40If you are sure you want to delete it, run 'git branch -D $branch_name'."
  41            exit 1
  42            ;;
  43        esac
  44        ;;
  45    esac
  46    rm -f "$GIT_DIR/refs/heads/$branch_name"
  47    echo "Deleted branch $branch_name."
  48    exit 0
  49}
  50
  51while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac
  52do
  53        case "$1" in
  54        -d | -D)
  55                delete_branch "$1" "$2"
  56                exit
  57                ;;
  58        --)
  59                shift
  60                break
  61                ;;
  62        -*)
  63                usage
  64                ;;
  65        esac
  66        shift
  67done
  68
  69case "$#" in
  700)
  71        headref=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD |
  72                  sed -e 's|^refs/heads/||')
  73        git-rev-parse --symbolic --all |
  74        sed -ne 's|^refs/heads/||p' |
  75        sort |
  76        while read ref
  77        do
  78                if test "$headref" = "$ref"
  79                then
  80                        pfx='*'
  81                else
  82                        pfx=' '
  83                fi
  84                echo "$pfx $ref"
  85        done
  86        exit 0 ;;
  871)
  88        head=HEAD ;;
  892)
  90        head="$2^0" ;;
  91esac
  92branchname="$1"
  93
  94rev=$(git-rev-parse --verify "$head") || exit
  95
  96[ -e "$GIT_DIR/refs/heads/$branchname" ] && die "$branchname already exists"
  97
  98echo $rev > "$GIT_DIR/refs/heads/$branchname"