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git/git-tag.sh
Matthijs Melchior 980ea5c5bb Teach git-tag about showing tag annotations.
The <pattern> for -l is now a shell pattern, not a list of grep parameters.
Option -l may be repeated with another <pattern>.

The new -n [<num>] option specifies how many lines from
the annotation are to be printed.
Not specifieing -n or -n 0 will just produce the tag names
Just -n or -n 1 will show the first line of the annotation on
the tag line.
Other valuse for -n will show that number of lines from the annotation.

The exit code used to indicate if any tag was found.
This is changed due to a different implementation.

A good way to test a tag for existence is to use:
git show-ref --quiet --verify refs/tags/$TAGNAME

Signed-off-by: Matthijs Melchior <mmelchior@xs4all.nl>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-06-02 20:04:14 -07:00

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#!/bin/sh
# Copyright (c) 2005 Linus Torvalds
USAGE='[-n [<num>]] -l [<pattern>] | [-a | -s | -u <key-id>] [-f | -d | -v] [-m <msg>] <tagname> [<head>]'
SUBDIRECTORY_OK='Yes'
. git-sh-setup
message_given=
annotate=
signed=
force=
message=
username=
list=
verify=
LINES=0
while case "$#" in 0) break ;; esac
do
case "$1" in
-a)
annotate=1
;;
-s)
annotate=1
signed=1
;;
-f)
force=1
;;
-n)
case $2 in
-*) LINES=1 # no argument
;;
*) shift
LINES=$(expr "$1" : '\([0-9]*\)')
[ -z "$LINES" ] && LINES=1 # 1 line is default when -n is used
;;
esac
;;
-l)
list=1
shift
PATTERN="$1" # select tags by shell pattern, not re
git rev-parse --symbolic --tags | sort |
while read TAG
do
case "$TAG" in
*$PATTERN*) ;;
*) continue ;;
esac
[ "$LINES" -le 0 ] && { echo "$TAG"; continue ;}
OBJTYPE=$(git cat-file -t "$TAG")
case $OBJTYPE in
tag) ANNOTATION=$(git cat-file tag "$TAG" |
sed -e '1,/^$/d' \
-e '/^-----BEGIN PGP SIGNATURE-----$/Q' )
printf "%-15s %s\n" "$TAG" "$ANNOTATION" |
sed -e '2,$s/^/ /' \
-e "${LINES}q"
;;
*) echo "$TAG"
;;
esac
done
;;
-m)
annotate=1
shift
message="$1"
if test "$#" = "0"; then
die "error: option -m needs an argument"
else
message_given=1
fi
;;
-F)
annotate=1
shift
if test "$#" = "0"; then
die "error: option -F needs an argument"
else
message="$(cat "$1")"
message_given=1
fi
;;
-u)
annotate=1
signed=1
shift
username="$1"
;;
-d)
shift
had_error=0
for tag
do
cur=$(git-show-ref --verify --hash -- "refs/tags/$tag") || {
echo >&2 "Seriously, what tag are you talking about?"
had_error=1
continue
}
git-update-ref -m 'tag: delete' -d "refs/tags/$tag" "$cur" || {
had_error=1
continue
}
echo "Deleted tag $tag."
done
exit $had_error
;;
-v)
shift
tag_name="$1"
tag=$(git-show-ref --verify --hash -- "refs/tags/$tag_name") ||
die "Seriously, what tag are you talking about?"
git-verify-tag -v "$tag"
exit $?
;;
-*)
usage
;;
*)
break
;;
esac
shift
done
[ -n "$list" ] && exit 0
name="$1"
[ "$name" ] || usage
prev=0000000000000000000000000000000000000000
if git-show-ref --verify --quiet -- "refs/tags/$name"
then
test -n "$force" || die "tag '$name' already exists"
prev=`git rev-parse "refs/tags/$name"`
fi
shift
git-check-ref-format "tags/$name" ||
die "we do not like '$name' as a tag name."
object=$(git-rev-parse --verify --default HEAD "$@") || exit 1
type=$(git-cat-file -t $object) || exit 1
tagger=$(git-var GIT_COMMITTER_IDENT) || exit 1
test -n "$username" ||
username=$(git-repo-config user.signingkey) ||
username=$(expr "z$tagger" : 'z\(.*>\)')
trap 'rm -f "$GIT_DIR"/TAG_TMP* "$GIT_DIR"/TAG_FINALMSG "$GIT_DIR"/TAG_EDITMSG' 0
if [ "$annotate" ]; then
if [ -z "$message_given" ]; then
( echo "#"
echo "# Write a tag message"
echo "#" ) > "$GIT_DIR"/TAG_EDITMSG
${VISUAL:-${EDITOR:-vi}} "$GIT_DIR"/TAG_EDITMSG || exit
else
printf '%s\n' "$message" >"$GIT_DIR"/TAG_EDITMSG
fi
grep -v '^#' <"$GIT_DIR"/TAG_EDITMSG |
git-stripspace >"$GIT_DIR"/TAG_FINALMSG
[ -s "$GIT_DIR"/TAG_FINALMSG -o -n "$message_given" ] || {
echo >&2 "No tag message?"
exit 1
}
( printf 'object %s\ntype %s\ntag %s\ntagger %s\n\n' \
"$object" "$type" "$name" "$tagger";
cat "$GIT_DIR"/TAG_FINALMSG ) >"$GIT_DIR"/TAG_TMP
rm -f "$GIT_DIR"/TAG_TMP.asc "$GIT_DIR"/TAG_FINALMSG
if [ "$signed" ]; then
gpg -bsa -u "$username" "$GIT_DIR"/TAG_TMP &&
cat "$GIT_DIR"/TAG_TMP.asc >>"$GIT_DIR"/TAG_TMP ||
die "failed to sign the tag with GPG."
fi
object=$(git-mktag < "$GIT_DIR"/TAG_TMP)
fi
git update-ref "refs/tags/$name" "$object" "$prev"