git/git-commit.sh
Junio C Hamano 5a798fb57f git-commit: finishing touches.
Introduce --only flag to allow the new "partial commit"
semantics when paths are specified.  The default is still the
traditional --include semantics.  Once peoples' fingers and
scripts that want the traditional behaviour are updated to
explicitly say --include, we could change it to either default
to --only, or refuse to operate without either --only/--include
when paths are specified.

This also fixes a couple of bugs in the previous round.  Namely:

 - forgot to save/restore index in some cases.

 - forgot to use the temporary index to show status when '--only
   paths...' semantics was used.

 - --author did not take precedence when reusing an existing
   commit.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-02-06 23:20:32 -08:00

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#!/bin/sh
#
# Copyright (c) 2005 Linus Torvalds
# Copyright (c) 2006 Junio C Hamano
USAGE='[-a] [-i] [-s] [-v | --no-verify] [-m <message> | -F <logfile> | (-C|-c) <commit>] [-e] [--author <author>] [<path>...]'
SUBDIRECTORY_OK=Yes
. git-sh-setup
git-rev-parse --verify HEAD >/dev/null 2>&1 ||
initial_commit=t
refuse_partial () {
echo >&2 "$1"
echo >&2 "You might have meant to say 'git commit -i paths...', perhaps?"
exit 1
}
SAVE_INDEX="$GIT_DIR/save-index$$"
save_index () {
cp "$GIT_DIR/index" "$SAVE_INDEX"
}
run_status () {
(
cd "$TOP"
if test '' != "$TMP_INDEX"
then
GIT_INDEX_FILE="$TMP_INDEX" git-status
else
git-status
fi
)
}
all=
also=
only=
logfile=
use_commit=
no_edit=
log_given=
log_message=
verify=t
signoff=
force_author=
while case "$#" in 0) break;; esac
do
case "$1" in
-F|--F|-f|--f|--fi|--fil|--file)
case "$#" in 1) usage ;; esac
shift
no_edit=t
log_given=t$log_given
logfile="$1"
shift
;;
-F*|-f*)
no_edit=t
log_given=t$log_given
logfile=`expr "$1" : '-[Ff]\(.*\)'`
shift
;;
--F=*|--f=*|--fi=*|--fil=*|--file=*)
no_edit=t
log_given=t$log_given
logfile=`expr "$1" : '-[^=]*=\(.*\)'`
shift
;;
-a|--a|--al|--all)
all=t
shift
;;
--au=*|--aut=*|--auth=*|--autho=*|--author=*)
force_author=`expr "$1" : '-[^=]*=\(.*\)'`
shift
;;
--au|--aut|--auth|--autho|--author)
case "$#" in 1) usage ;; esac
shift
force_author="$1"
shift
;;
-e|--e|--ed|--edi|--edit)
no_edit=
shift
;;
-i|--i|--in|--inc|--incl|--inclu|--includ|--include)
also=t
shift
;;
-o|--o|--on|--onl|--only)
only=t
shift
;;
-m|--m|--me|--mes|--mess|--messa|--messag|--message)
case "$#" in 1) usage ;; esac
shift
log_given=t$log_given
log_message="$1"
no_edit=t
shift
;;
-m*)
log_given=t$log_given
log_message=`expr "$1" : '-m\(.*\)'`
no_edit=t
shift
;;
--m=*|--me=*|--mes=*|--mess=*|--messa=*|--messag=*|--message=*)
log_given=t$log_given
log_message=`expr "$1" : '-[^=]*=\(.*\)'`
no_edit=t
shift
;;
-n|--n|--no|--no-|--no-v|--no-ve|--no-ver|--no-veri|--no-verif|--no-verify)
verify=
shift
;;
-c)
case "$#" in 1) usage ;; esac
shift
log_given=t$log_given
use_commit="$1"
no_edit=
shift
;;
--ree=*|--reed=*|--reedi=*|--reedit=*|--reedit-=*|--reedit-m=*|\
--reedit-me=*|--reedit-mes=*|--reedit-mess=*|--reedit-messa=*|\
--reedit-messag=*|--reedit-message=*)
log_given=t$log_given
use_commit=`expr "$1" : '-[^=]*=\(.*\)'`
no_edit=
shift
;;
--ree|--reed|--reedi|--reedit|--reedit-|--reedit-m|--reedit-me|\
--reedit-mes|--reedit-mess|--reedit-messa|--reedit-messag|--reedit-message)
case "$#" in 1) usage ;; esac
shift
log_given=t$log_given
use_commit="$1"
no_edit=
shift
;;
-C)
case "$#" in 1) usage ;; esac
shift
log_given=t$log_given
use_commit="$1"
no_edit=t
shift
;;
--reu=*|--reus=*|--reuse=*|--reuse-=*|--reuse-m=*|--reuse-me=*|\
--reuse-mes=*|--reuse-mess=*|--reuse-messa=*|--reuse-messag=*|\
--reuse-message=*)
log_given=t$log_given
use_commit=`expr "$1" : '-[^=]*=\(.*\)'`
no_edit=t
shift
;;
--reu|--reus|--reuse|--reuse-|--reuse-m|--reuse-me|--reuse-mes|\
--reuse-mess|--reuse-messa|--reuse-messag|--reuse-message)
case "$#" in 1) usage ;; esac
shift
log_given=t$log_given
use_commit="$1"
no_edit=t
shift
;;
-s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
signoff=t
shift
;;
-v|--v|--ve|--ver|--veri|--verif|--verify)
verify=t
shift
;;
--)
shift
break
;;
-*)
usage
;;
*)
break
;;
esac
done
case "$log_given" in
tt*)
die "Only one of -c/-C/-F/-m can be used." ;;
esac
case "$#,$also$only" in
*,tt)
die "Only one of --include/--only can be used." ;;
0,t)
die "No paths with --include/--only does not make sense." ;;
0,)
;;
*,)
echo >&2 "assuming --include paths..."
also=t
# Later when switch the defaults, we will replace them with these:
# echo >&2 "assuming --only paths..."
# also=
;;
esac
unset only
TOP=`git-rev-parse --show-cdup`
if test -z "$TOP"
then
TOP=./
fi
case "$all,$also" in
t,t)
die "Cannot use -a and -i at the same time." ;;
t,)
case "$#" in
0) ;;
*) die "Paths with -a does not make sense." ;;
esac
save_index &&
(
cd "$TOP"
git-diff-files --name-only -z |
git-update-index --remove -z --stdin
)
;;
,t)
case "$#" in
0) die "No paths with -i does not make sense." ;;
esac
save_index &&
git-diff-files --name-only -z -- "$@" |
(cd "$TOP" && git-update-index --remove -z --stdin)
;;
,)
case "$#" in
0)
;; # commit as-is
*)
if test -f "$GIT_DIR/MERGE_HEAD"
then
refuse_partial "Cannot do a partial commit during a merge."
fi
TMP_INDEX="$GIT_DIR/tmp-index$$"
if test -z "$initial_commit"
then
# make sure index is clean at the specified paths, or
# they are additions.
dirty_in_index=`git-diff-index --cached --name-status \
--diff-filter=DMTU HEAD -- "$@"`
test -z "$dirty_in_index" ||
refuse_partial "Different in index and the last commit:
$dirty_in_index"
fi
commit_only=`git-ls-files -- "$@"` ;;
esac
;;
esac
git-update-index -q --refresh || exit 1
trap '
test -z "$TMP_INDEX" || {
test -f "$TMP_INDEX" && rm -f "$TMP_INDEX"
}
test -f "$SAVE_INDEX" && mv -f "$SAVE_INDEX" "$GIT_DIR/index"
' 0
if test "$TMP_INDEX"
then
if test -z "$initial_commit"
then
GIT_INDEX_FILE="$TMP_INDEX" git-read-tree HEAD
else
rm -f "$TMP_INDEX"
fi || exit
echo "$commit_only" |
GIT_INDEX_FILE="$TMP_INDEX" git-update-index --add --remove --stdin &&
save_index &&
echo "$commit_only" |
git-update-index --remove --stdin ||
exit
fi
if test t = "$verify" && test -x "$GIT_DIR"/hooks/pre-commit
then
if test "$TMP_INDEX"
then
GIT_INDEX_FILE="$TMP_INDEX" "$GIT_DIR"/hooks/pre-commit
else
"$GIT_DIR"/hooks/pre-commit
fi || exit
fi
if test "$log_message" != ''
then
echo "$log_message"
elif test "$logfile" != ""
then
if test "$logfile" = -
then
test -t 0 &&
echo >&2 "(reading log message from standard input)"
cat
else
cat <"$logfile"
fi
elif test "$use_commit" != ""
then
git-cat-file commit "$use_commit" | sed -e '1,/^$/d'
elif test -f "$GIT_DIR/MERGE_HEAD" && test -f "$GIT_DIR/MERGE_MSG"
then
cat "$GIT_DIR/MERGE_MSG"
fi | git-stripspace >"$GIT_DIR"/COMMIT_EDITMSG
case "$signoff" in
t)
{
echo
git-var GIT_COMMITTER_IDENT | sed -e '
s/>.*/>/
s/^/Signed-off-by: /
'
} >>"$GIT_DIR"/COMMIT_EDITMSG
;;
esac
if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
echo "#"
echo "# It looks like you may be committing a MERGE."
echo "# If this is not correct, please remove the file"
echo "# $GIT_DIR/MERGE_HEAD"
echo "# and try again"
echo "#"
fi >>"$GIT_DIR"/COMMIT_EDITMSG
# Author
if test '' != "$force_author"
then
GIT_AUTHOR_NAME=`expr "$force_author" : '\(.*[^ ]\) *<.*'` &&
GIT_AUTHOR_EMAIL=`expr "$force_author" : '.*\(<.*\)'` &&
test '' != "$GIT_AUTHOR_NAME" &&
test '' != "$GIT_AUTHOR_EMAIL" ||
die "malformatted --author parameter"
export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL
elif test '' != "$use_commit"
then
pick_author_script='
/^author /{
s/'\''/'\''\\'\'\''/g
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" |
LANG=C LC_ALL=C sed -ne "$pick_author_script"`
eval "$set_author_env"
export GIT_AUTHOR_NAME
export GIT_AUTHOR_EMAIL
export GIT_AUTHOR_DATE
fi
PARENTS="-p HEAD"
if test -z "$initial_commit"
then
if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
PARENTS="-p HEAD "`sed -e 's/^/-p /' "$GIT_DIR/MERGE_HEAD"`
fi
else
if [ -z "$(git-ls-files)" ]; then
echo >&2 Nothing to commit
exit 1
fi
PARENTS=""
fi
run_status >>"$GIT_DIR"/COMMIT_EDITMSG
if [ "$?" != "0" -a ! -f "$GIT_DIR/MERGE_HEAD" ]
then
rm -f "$GIT_DIR/COMMIT_EDITMSG"
run_status
exit 1
fi
case "$no_edit" in
'')
case "${VISUAL:-$EDITOR},$TERM" in
,dumb)
echo >&2 "Terminal is dumb but no VISUAL nor EDITOR defined."
echo >&2 "Please supply the commit log message using either"
echo >&2 "-m or -F option. A boilerplate log message has"
echo >&2 "been prepared in $GIT_DIR/COMMIT_EDITMSG"
exit 1
;;
esac
${VISUAL:-${EDITOR:-vi}} "$GIT_DIR/COMMIT_EDITMSG"
;;
esac
case "$verify" in
t)
if test -x "$GIT_DIR"/hooks/commit-msg
then
"$GIT_DIR"/hooks/commit-msg "$GIT_DIR"/COMMIT_EDITMSG || exit
fi
esac
grep -v '^#' < "$GIT_DIR"/COMMIT_EDITMSG |
git-stripspace > "$GIT_DIR"/COMMIT_MSG
if cnt=`grep -v -i '^Signed-off-by' "$GIT_DIR"/COMMIT_MSG |
git-stripspace |
wc -l` &&
test 0 -lt $cnt
then
if test -z "$TMP_INDEX"
then
tree=$(git-write-tree)
else
tree=$(GIT_INDEX_FILE="$TMP_INDEX" git-write-tree) &&
rm -f "$TMP_INDEX"
fi &&
commit=$(cat "$GIT_DIR"/COMMIT_MSG | git-commit-tree $tree $PARENTS) &&
git-update-ref HEAD $commit $current &&
rm -f -- "$GIT_DIR/MERGE_HEAD"
else
echo >&2 "* no commit message? aborting commit."
false
fi
ret="$?"
rm -f "$GIT_DIR/COMMIT_MSG" "$GIT_DIR/COMMIT_EDITMSG"
git-rerere
if test -x "$GIT_DIR"/hooks/post-commit && test "$ret" = 0
then
"$GIT_DIR"/hooks/post-commit
fi
if test 0 -eq "$ret"
then
rm -f "$SAVE_INDEX"
fi
exit "$ret"