git-tag.sh

   1 #!/bin/sh
   2 # Copyright (c) 2005 Linus Torvalds
   3
   4 GIT_DIR=`git-rev-parse --git-dir` || exit $?
   5
   6 usage () {
   7     echo >&2 "Usage: git-tag [-a | -s | -u <key-id>] [-f | -d] [-m <msg>] <tagname> [<head>]"
   8     exit 1
   9 }
  10
  11 die () {
  12     echo >&2 "$*"
  13     exit 1
  14 }
  15
  16 annotate=
  17 signed=
  18 force=
  19 message=
  20 username=
  21 while case "$#" in 0) break ;; esac
  22 do
  23     case "$1" in
  24     -a)
  25         annotate=1
  26         ;;
  27     -s)
  28         annotate=1
  29         signed=1
  30         ;;
  31     -f)
  32         force=1
  33         ;;
  34     -m)
  35         annotate=1
  36         shift
  37         message="$1"
  38         ;;
  39     -u)
  40         annotate=1
  41         signed=1
  42         shift
  43         username="$1"
  44         ;;
  45     -d)
  46         shift
  47         tag_name="$1"
  48         rm "$GIT_DIR/refs/tags/$tag_name" && \
  49                 echo "Deleted tag $tag_name."
  50         exit $?
  51         ;;
  52     -*)
  53         usage
  54         ;;
  55     *)
  56         break
  57         ;;
  58     esac
  59     shift
  60 done
  61
  62 name="$1"
  63 [ "$name" ] || usage
  64 if [ -e "$GIT_DIR/refs/tags/$name" -a -z "$force" ]; then
  65     die "tag '$name' already exists"
  66 fi
  67 shift
  68 git-check-ref-format "tags/$name" ||
  69         die "we do not like '$name' as a tag name."
  70
  71 object=$(git-rev-parse --verify --default HEAD "$@") || exit 1
  72 type=$(git-cat-file -t $object) || exit 1
  73 tagger=$(git-var GIT_COMMITTER_IDENT) || exit 1
  74 : ${username:=$(expr "$tagger" : '\(.*>\)')}
  75
  76 trap 'rm -f "$GIT_DIR"/TAG_TMP* "$GIT_DIR"/TAG_FINALMSG "$GIT_DIR"/TAG_EDITMSG' 0
  77
  78 if [ "$annotate" ]; then
  79     if [ -z "$message" ]; then
  80         ( echo "#"
  81           echo "# Write a tag message"
  82           echo "#" ) > "$GIT_DIR"/TAG_EDITMSG
  83         ${VISUAL:-${EDITOR:-vi}} "$GIT_DIR"/TAG_EDITMSG || exit
  84     else
  85         echo "$message" >"$GIT_DIR"/TAG_EDITMSG
  86     fi
  87
  88     grep -v '^#' <"$GIT_DIR"/TAG_EDITMSG |
  89     git-stripspace >"$GIT_DIR"/TAG_FINALMSG
  90
  91     [ -s "$GIT_DIR"/TAG_FINALMSG ] || {
  92         echo >&2 "No tag message?"
  93         exit 1
  94     }
  95
  96     ( echo -e "object $object\ntype $type\ntag $name\ntagger $tagger\n";
  97       cat "$GIT_DIR"/TAG_FINALMSG ) >"$GIT_DIR"/TAG_TMP
  98     rm -f "$GIT_DIR"/TAG_TMP.asc "$GIT_DIR"/TAG_FINALMSG
  99     if [ "$signed" ]; then
 100         gpg -bsa -u "$username" "$GIT_DIR"/TAG_TMP &&
 101         cat "$GIT_DIR"/TAG_TMP.asc >>"$GIT_DIR"/TAG_TMP ||
 102         die "failed to sign the tag with GPG."
 103     fi
 104     object=$(git-mktag < "$GIT_DIR"/TAG_TMP)
 105 fi
 106
 107 leading=`expr "refs/tags/$name" : '\(.*\)/'` &&
 108 mkdir -p "$GIT_DIR/$leading" &&
 109 echo $object > "$GIT_DIR/refs/tags/$name"