git-tag.sh

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