Andrew's git - gitweb.git/blob

d1e37307617abd6144f36f93decbebd95a97fb32
   1#!/bin/sh
   2
   3USAGE='[(-d | -D) <branchname>] | [[-f] <branchname> [<start-point>]] | -r'
   4LONG_USAGE='If no arguments, show available branches and mark current branch with a star.
   5If one argument, create a new branch <branchname> based off of current HEAD.
   6If two arguments, create a new branch <branchname> based off of <start-point>.'
   7
   8SUBDIRECTORY_OK='Yes'
   9. git-sh-setup
  10
  11headref=$(git-symbolic-ref HEAD | sed -e 's|^refs/heads/||')
  12
  13delete_branch () {
  14    option="$1"
  15    shift
  16    for branch_name
  17    do
  18        case ",$headref," in
  19        ",$branch_name,")
  20            die "Cannot delete the branch you are on." ;;
  21        ,,)
  22            die "What branch are you on anyway?" ;;
  23        esac
  24        branch=$(cat "$GIT_DIR/refs/heads/$branch_name") &&
  25            branch=$(git-rev-parse --verify "$branch^0") ||
  26                die "Seriously, what branch are you talking about?"
  27        case "$option" in
  28        -D)
  29            ;;
  30        *)
  31            mbs=$(git-merge-base -a "$branch" HEAD | tr '\012' ' ')
  32            case " $mbs " in
  33            *' '$branch' '*)
  34                # the merge base of branch and HEAD contains branch --
  35                # which means that the HEAD contains everything in both.
  36                ;;
  37            *)
  38                echo >&2 "The branch '$branch_name' is not a strict subset of your current HEAD.
  39If you are sure you want to delete it, run 'git branch -D $branch_name'."
  40                exit 1
  41                ;;
  42            esac
  43            ;;
  44        esac
  45        rm -f "$GIT_DIR/refs/heads/$branch_name"
  46        echo "Deleted branch $branch_name."
  47    done
  48    exit 0
  49}
  50
  51ls_remote_branches () {
  52    git-rev-parse --symbolic --all |
  53    sed -ne 's|^refs/\(remotes/\)|\1|p' |
  54    sort
  55}
  56
  57force=
  58while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac
  59do
  60        case "$1" in
  61        -d | -D)
  62                delete_branch "$@"
  63                exit
  64                ;;
  65        -r)
  66                ls_remote_branches
  67                exit
  68                ;;
  69        -f)
  70                force="$1"
  71                ;;
  72        --)
  73                shift
  74                break
  75                ;;
  76        -*)
  77                usage
  78                ;;
  79        esac
  80        shift
  81done
  82
  83case "$#" in
  840)
  85        git-rev-parse --symbolic --branches |
  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 -m "branch: Created from $head" "refs/heads/$branchname" $rev