git-tag.sh

   1 #!/bin/sh
   2 # Copyright (c) 2005 Linus Torvalds
   3
   4 . git-sh-setup || die "Not a git archive"
   5
   6 usage () {
   7     echo >&2 "Usage: git-tag [-a | -s | -u <key-id>] [-f] [-m <msg>] <tagname> [<head>]"
   8     exit 1
   9 }
  10
  11 annotate=
  12 signed=
  13 force=
  14 message=
  15 username=
  16 while case "$#" in 0) break ;; esac
  17 do
  18     case "$1" in
  19     -a)
  20         annotate=1
  21         ;;
  22     -s)
  23         annotate=1
  24         signed=1
  25         ;;
  26     -f)
  27         force=1
  28         ;;
  29     -m)
  30         annotate=1
  31         shift
  32         message="$1"
  33         ;;
  34     -u)
  35         annotate=1
  36         signed=1
  37         shift
  38         username="$1"
  39         ;;
  40     -*)
  41         usage
  42         ;;
  43     *)
  44         break
  45         ;;
  46     esac
  47     shift
  48 done
  49
  50 name="$1"
  51 [ "$name" ] || usage
  52 if [ -e "$GIT_DIR/refs/tags/$name" -a -z "$force" ]; then
  53     die "tag '$name' already exists"
  54 fi
  55 shift
  56
  57 object=$(git-rev-parse --verify --default HEAD "$@") || exit 1
  58 type=$(git-cat-file -t $object) || exit 1
  59 tagger=$(git-var GIT_COMMITTER_IDENT) || exit 1
  60 : ${username:=$(expr "$tagger" : '\(.*>\)')}
  61
  62 trap 'rm -f .tmp-tag* .tagmsg .editmsg' 0
  63
  64 if [ "$annotate" ]; then
  65     if [ -z "$message" ]; then
  66         ( echo "#"
  67           echo "# Write a tag message"
  68           echo "#" ) > .editmsg
  69         ${VISUAL:-${EDITOR:-vi}} .editmsg || exit
  70     else
  71         echo "$message" > .editmsg
  72     fi
  73
  74     grep -v '^#' < .editmsg | git-stripspace > .tagmsg
  75
  76     [ -s .tagmsg ] || {
  77         echo >&2 "No tag message?"
  78         exit 1
  79     }
  80
  81     ( echo -e "object $object\ntype $type\ntag $name\ntagger $tagger\n"; cat .tagmsg ) > .tmp-tag
  82     rm -f .tmp-tag.asc .tagmsg
  83     if [ "$signed" ]; then
  84         gpg -bsa -u "$username" .tmp-tag &&
  85         cat .tmp-tag.asc >>.tmp-tag ||
  86         die "failed to sign the tag with GPG."
  87     fi
  88     object=$(git-mktag < .tmp-tag)
  89 fi
  90
  91 mkdir -p "$GIT_DIR/refs/tags"
  92 echo $object > "$GIT_DIR/refs/tags/$name"