Andrew's git - gitweb.git/blob

   1#!/bin/sh
   2
   3USAGE='[-l] [-f] <branchname> [<start-point>] | (-d | -D) <branchname> | [-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/logs/refs/heads/$branch_name"
  46        rm -f "$GIT_DIR/refs/heads/$branch_name"
  47        echo "Deleted branch $branch_name."
  48    done
  49    exit 0
  50}
  51
  52ls_remote_branches () {
  53    git-rev-parse --symbolic --all |
  54    sed -ne 's|^refs/\(remotes/\)|\1|p' |
  55    sort
  56}
  57
  58force=
  59create_log=
  60while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac
  61do
  62        case "$1" in
  63        -d | -D)
  64                delete_branch "$@"
  65                exit
  66                ;;
  67        -r)
  68                ls_remote_branches
  69                exit
  70                ;;
  71        -f)
  72                force="$1"
  73                ;;
  74        -l)
  75                create_log="yes"
  76                ;;
  77        --)
  78                shift
  79                break
  80                ;;
  81        -*)
  82                usage
  83                ;;
  84        esac
  85        shift
  86done
  87
  88case "$#" in
  890)
  90        git-rev-parse --symbolic --branches |
  91        sort |
  92        while read ref
  93        do
  94                if test "$headref" = "$ref"
  95                then
  96                        pfx='*'
  97                else
  98                        pfx=' '
  99                fi
 100                echo "$pfx $ref"
 101        done
 102        exit 0 ;;
 1031)
 104        head=HEAD ;;
 1052)
 106        head="$2^0" ;;
 107esac
 108branchname="$1"
 109
 110rev=$(git-rev-parse --verify "$head") || exit
 111
 112git-check-ref-format "heads/$branchname" ||
 113        die "we do not like '$branchname' as a branch name."
 114
 115if [ -d "$GIT_DIR/refs/heads/$branchname" ]
 116then
 117        for refdir in `cd "$GIT_DIR" && \
 118                find "refs/heads/$branchname" -type d | sort -r`
 119        do
 120                rmdir "$GIT_DIR/$refdir" || \
 121                    die "Could not delete '$refdir', there may still be a ref there."
 122        done
 123fi
 124
 125if [ -e "$GIT_DIR/refs/heads/$branchname" ]
 126then
 127        if test '' = "$force"
 128        then
 129                die "$branchname already exists."
 130        elif test "$branchname" = "$headref"
 131        then
 132                die "cannot force-update the current branch."
 133        fi
 134fi
 135if test "$create_log" = 'yes'
 136then
 137        mkdir -p $(dirname "$GIT_DIR/logs/refs/heads/$branchname")
 138        touch "$GIT_DIR/logs/refs/heads/$branchname"
 139fi
 140git update-ref -m "branch: Created from $head" "refs/heads/$branchname" $rev