Andrew's git - gitweb.git/blob

   1#!/bin/sh
   2
   3USAGE='[-l] [(-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        ",$branch_name,")
  20            die "Cannot delete the branch you are on." ;;
  21        ,,)
  22            die "What branch are you on anyway?" ;;
  23        esac
  24        branch=$(git-show-ref --verify --hash -- "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 $branch_name'."
  40                exit 1
  41                ;;
  42            esac
  43            ;;
  44        esac
  45        git update-ref -d "refs/heads/$branch_name" "$branch"
  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=
  58create_log=
  59while case "$#,$1" in 0,*) break ;; *,-*) ;; *) break ;; esac
  60do
  61        case "$1" in
  62        -d | -D)
  63                delete_branch "$@"
  64                exit
  65                ;;
  66        -r)
  67                ls_remote_branches
  68                exit
  69                ;;
  70        -f)
  71                force="$1"
  72                ;;
  73        -l)
  74                create_log="yes"
  75                ;;
  76        --)
  77                shift
  78                break
  79                ;;
  80        -*)
  81                usage
  82                ;;
  83        esac
  84        shift
  85done
  86
  87case "$#" in
  880)
  89        git-rev-parse --symbolic --branches |
  90        sort |
  91        while read ref
  92        do
  93                if test "$headref" = "$ref"
  94                then
  95                        pfx='*'
  96                else
  97                        pfx=' '
  98                fi
  99                echo "$pfx $ref"
 100        done
 101        exit 0 ;;
 1021)
 103        head=HEAD ;;
 1042)
 105        head="$2^0" ;;
 106esac
 107branchname="$1"
 108
 109rev=$(git-rev-parse --verify "$head") || exit
 110
 111git-check-ref-format "heads/$branchname" ||
 112        die "we do not like '$branchname' as a branch name."
 113
 114prev=''
 115if git-show-ref --verify --quiet -- "refs/heads/$branchname"
 116then
 117        if test '' = "$force"
 118        then
 119                die "$branchname already exists."
 120        elif test "$branchname" = "$headref"
 121        then
 122                die "cannot force-update the current branch."
 123        fi
 124        prev=`git rev-parse --verify "refs/heads/$branchname"`
 125fi
 126if test "$create_log" = 'yes'
 127then
 128        mkdir -p $(dirname "$GIT_DIR/logs/refs/heads/$branchname")
 129        touch "$GIT_DIR/logs/refs/heads/$branchname"
 130fi
 131git update-ref -m "branch: Created from $head" "refs/heads/$branchname" "$rev" "$prev"