git/git-commit-script
Junio C Hamano 5fec3ef101 [PATCH] git-commit-script: get commit message from an existing one.
With -m flag specified, git-commit-script takes the commit
message along with author information from an existing commit.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:52:16 -07:00

109 lines
2.1 KiB
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#!/bin/sh
#
# Copyright (c) 2005 Linus Torvalds
#
usage () {
echo 'git commit [-m existing-commit] [<path>...]'
exit 1
}
: ${GIT_DIR=.git}
if [ ! -d "$GIT_DIR" ]; then
echo Not a git directory 1>&2
exit 1
fi
while case "$#" in 0) break ;; esac
do
case "$1" in
-m) shift
case "$#" in
0) usage ;;
*) use_commit=`git-rev-parse "$1"` ||
exit ;;
esac
;;
*) break
;;
esac
shift
done
git-update-cache -q --refresh -- "$@" || exit 1
PARENTS="-p HEAD"
if [ ! -r "$GIT_DIR/HEAD" ]; then
if [ -z "$(git-ls-files)" ]; then
echo Nothing to commit 1>&2
exit 1
fi
(
echo "#"
echo "# Initial commit"
echo "#"
git-ls-files | sed 's/^/# New file: /'
echo "#"
) > .editmsg
PARENTS=""
else
if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
echo "#"
echo "# It looks like your may be committing a MERGE."
echo "# If this is not correct, please remove the file"
echo "# $GIT_DIR/MERGE_HEAD"
echo "# and try again"
echo "#"
PARENTS="-p HEAD -p MERGE_HEAD"
elif test "$use_commit" != ""
then
pick_author_script='
/^author /{
h
s/^author \([^<]*\) <[^>]*> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_NAME='\''&'\''/p
g
s/^author [^<]* <\([^>]*\)> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
g
s/^author [^<]* <[^>]*> \(.*\)$/\1/
s/'\''/'\''\'\'\''/g
s/.*/GIT_AUTHOR_DATE='\''&'\''/p
q
}
'
set_author_env=`git-cat-file commit "$use_commit" |
sed -ne "$pick_author_script"`
eval "$set_author_env"
export GIT_AUTHOR_NAME
export GIT_AUTHOR_EMAIL
export GIT_AUTHOR_DATE
git-cat-file commit "$use_commit" |
sed -e '1,/^$/d'
fi >.editmsg
git-status-script >>.editmsg
fi
if [ "$?" != "0" ]
then
cat .editmsg
rm .editmsg
exit 1
fi
case "$use_commit" in
'')
${VISUAL:-${EDITOR:-vi}} .editmsg
;;
esac
grep -v '^#' < .editmsg | git-stripspace > .cmitmsg
[ -s .cmitmsg ] &&
tree=$(git-write-tree) &&
commit=$(cat .cmitmsg | git-commit-tree $tree $PARENTS) &&
echo $commit > "$GIT_DIR/HEAD" &&
rm -f -- "$GIT_DIR/MERGE_HEAD"
ret="$?"
rm -f .cmitmsg .editmsg
exit "$ret"