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] [-f] [-m "tag message"] tagname [head]"
   8     exit 1
   9 }
  10
  11 annotate=
  12 signed=
  13 force=
  14 message=
  15 while case "$#" in 0) break ;; esac
  16 do
  17     case "$1" in
  18     -a)
  19         annotate=1
  20         ;;
  21     -s)
  22         annotate=1
  23         signed=1
  24         ;;
  25     -f)
  26         force=1
  27         ;;
  28     -m)
  29         annotate=1
  30         shift
  31         message="$1"
  32         ;;
  33     -*)
  34         usage
  35         ;;
  36     *)
  37         break
  38         ;;
  39     esac
  40     shift
  41 done
  42
  43 name="$1"
  44 [ "$name" ] || usage
  45 if [ -e "$GIT_DIR/refs/tags/$name" -a -z "$force" ]; then
  46     die "tag '$name' already exists"
  47 fi
  48 shift
  49 git-check-ref-format "tags/$name" ||
  50         die "we do not like '$name' as a tag name."
  51
  52 object=$(git-rev-parse --verify --default HEAD "$@") || exit 1
  53 type=$(git-cat-file -t $object) || exit 1
  54 tagger=$(git-var GIT_COMMITTER_IDENT) || exit 1
  55
  56 trap 'rm -f .tmp-tag* .tagmsg .editmsg' 0
  57
  58 if [ "$annotate" ]; then
  59     if [ -z "$message" ]; then
  60         ( echo "#"
  61           echo "# Write a tag message"
  62           echo "#" ) > .editmsg
  63         ${VISUAL:-${EDITOR:-vi}} .editmsg || exit
  64     else
  65         echo "$message" > .editmsg
  66     fi
  67
  68     grep -v '^#' < .editmsg | git-stripspace > .tagmsg
  69
  70     [ -s .tagmsg ] || exit
  71
  72     ( echo -e "object $object\ntype $type\ntag $name\ntagger $tagger\n"; cat .tagmsg ) > .tmp-tag
  73     rm -f .tmp-tag.asc .tagmsg
  74     if [ "$signed" ]; then
  75         me=$(expr "$tagger" : '\(.*>\)') &&
  76         gpg -bsa -u "$me" .tmp-tag &&
  77         cat .tmp-tag.asc >>.tmp-tag ||
  78         die "failed to sign the tag with GPG."
  79     fi
  80     object=$(git-mktag < .tmp-tag)
  81 fi
  82
  83 mkdir -p "$GIT_DIR/refs/tags"
  84 echo $object > "$GIT_DIR/refs/tags/$name"