git-tag.sh

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