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git-commit-vandalism/git-commit.sh
Junio C Hamano cf7bb589af git-status -v 
This revamps the git-status command to take the same set of
parameters as git commit.  It gives a preview of what is being
committed with that command.  With -v flag, it shows the diff
output between the HEAD commit and the index that would be
committed if these flags were given to git-commit command.

git-commit also acquires -v flag (it used to mean "verify" but
that is the default anyway and there is --no-verify to turn it
off, so not much is lost), which uses the updated git-status -v
to seed the commit log buffer.  This is handy for writing a log
message while reviewing the changes one last time.

Now, git-commit and git-status are internally share the same
implementation.

Unlike previous git-commit change, this uses a temporary index
to prepare the index file that would become the real index file
after a successful commit, and moves it to the real index file
once the commit is actually made.  This makes it safer than the
previous scheme, which stashed away the original index file and
restored it after an aborted commit.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-02-10 00:54:49 -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
branch=$(GIT_DIR="$GIT_DIR" git-symbolic-ref HEAD)
case "$0" in
*status)
status_only=t
unmerged_ok_if_status=--unmerged ;;
*commit)
status_only=
unmerged_ok_if_status= ;;
esac
refuse_partial () {
echo >&2 "$1"
echo >&2 "You might have meant to say 'git commit -i paths...', perhaps?"
exit 1
}
THIS_INDEX="$GIT_DIR/index"
NEXT_INDEX="$GIT_DIR/next-index$$"
rm -f "$NEXT_INDEX"
save_index () {
cp "$THIS_INDEX" "$NEXT_INDEX"
}
report () {
header="#
# $1:
# ($2)
#
"
trailer=""
while read status name newname
do
printf '%s' "$header"
header=""
trailer="#
"
case "$status" in
M ) echo "# modified: $name";;
D*) echo "# deleted: $name";;
T ) echo "# typechange: $name";;
C*) echo "# copied: $name -> $newname";;
R*) echo "# renamed: $name -> $newname";;
A*) echo "# new file: $name";;
U ) echo "# unmerged: $name";;
esac
done
printf '%s' "$trailer"
[ "$header" ]
}
run_status () {
(
# We always show status for the whole tree.
cd "$TOP"
# If TMP_INDEX is defined, that means we are doing
# "--only" partial commit, and that index file is used
# to build the tree for the commit. Otherwise, if
# NEXT_INDEX exists, that is the index file used to
# make the commit. Otherwise we are using as-is commit
# so the regular index file is what we use to compare.
if test '' != "$TMP_INDEX"
then
GIT_INDEX_FILE="$TMP_INDEX"
export GIT_INDEX_FILE
elif test -f "$NEXT_INDEX"
then
GIT_INDEX_FILE="$NEXT_INDEX"
export GIT_INDEX_FILE
fi
case "$branch" in
refs/heads/master) ;;
*) echo "# On branch $branch" ;;
esac
if test -z "$initial_commit"
then
if test -z "$verbose"
then
git-diff-index -M --cached --name-status \
--diff-filter=MDTCRA HEAD |
sed -e '
s/\\/\\\\/g
s/ /\\ /g
' |
report "Updated but not checked in" "will commit"
else
if git-diff-index --cached -M -p --diff-filter=MDTCRA HEAD |
grep .
then
false
else
true
fi
fi
committable="$?"
else
echo '#
# Initial commit
#'
git-ls-files |
sed -e '
s/\\/\\\\/g
s/ /\\ /g
s/^/A /
' |
report "Updated but not checked in" "will commit"
committable="$?"
fi
git-diff-files --name-status |
sed -e '
s/\\/\\\\/g
s/ /\\ /g
' |
report "Changed but not updated" \
"use git-update-index to mark for commit"
if test -f "$GIT_DIR/info/exclude"
then
git-ls-files -z --others --directory \
--exclude-from="$GIT_DIR/info/exclude" \
--exclude-per-directory=.gitignore
else
git-ls-files -z --others --directory \
--exclude-per-directory=.gitignore
fi |
perl -e '$/ = "\0";
my $shown = 0;
while (<>) {
chomp;
s|\\|\\\\|g;
s|\t|\\t|g;
s|\n|\\n|g;
s/^/# /;
if (!$shown) {
print "#\n# Untracked files:\n";
print "# (use \"git add\" to add to commit)\n";
print "#\n";
$shown = 1;
}
print "$_\n";
}
'
case "$committable" in
0)
echo "nothing to commit"
exit 1
esac
exit 0
)
}
trap '
test -z "$TMP_INDEX" || {
test -f "$TMP_INDEX" && rm -f "$TMP_INDEX"
}
rm -f "$NEXT_INDEX"
' 0
################################################################
# Command line argument parsing and sanity checking
all=
also=
only=
logfile=
use_commit=
no_edit=
log_given=
log_message=
verify=t
verbose=
signoff=
force_author=
while case "$#" 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="$1"
no_edit=t
shift
;;
-s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
signoff=t
shift
;;
-v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
verbose=t
shift
;;
--)
shift
break
;;
-*)
usage
;;
*)
break
;;
esac
done
################################################################
# Sanity check options
case "$log_given" in
tt*)
die "Only one of -c/-C/-F/-m can be used." ;;
esac
case "$#,$also$only" in
*,tt)
die "Only one of --include/--only can be used." ;;
0,t)
die "No paths with --include/--only does not make sense." ;;
0,)
;;
*,)
echo >&2 "assuming --include paths..."
also=t
# Later when switch the defaults, we will replace them with these:
# echo >&2 "assuming --only paths..."
# also=
# If we are going to launch an editor, the message won't be
# shown without this...
test -z "$log_given$status_only" && sleep 1
;;
esac
unset only
case "$all,$also,$#" in
t,t,*)
die "Cannot use -a and -i at the same time." ;;
t,,[1-9]*)
die "Paths with -a does not make sense." ;;
,t,0)
die "No paths with -i does not make sense." ;;
esac
################################################################
# Prepare index to have a tree to be committed
TOP=`git-rev-parse --show-cdup`
if test -z "$TOP"
then
TOP=./
fi
case "$all,$also" in
t,)
save_index &&
(
cd "$TOP"
GIT_INDEX_FILE="$NEXT_INDEX"
export GIT_INDEX_FILE
git-diff-files --name-only -z |
git-update-index --remove -z --stdin
)
;;
,t)
save_index &&
git-diff-files --name-only -z -- "$@" |
(
cd "$TOP"
GIT_INDEX_FILE="$NEXT_INDEX"
export GIT_INDEX_FILE
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:
$dirty_in_index"
fi
commit_only=`git-ls-files -- "$@"`
# Build the temporary index and update the real index
# the same way.
if test -z "$initial_commit"
then
cp "$THIS_INDEX" "$TMP_INDEX"
GIT_INDEX_FILE="$TMP_INDEX" git-read-tree -m 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_INDEX_FILE="$NEXT_INDEX"
export GIT_INDEX_FILE
git-update-index --remove --stdin
) || exit
;;
esac
;;
esac
################################################################
# If we do as-is commit, the index file will be THIS_INDEX,
# otherwise NEXT_INDEX after we make this commit. We leave
# the index as is if we abort.
if test -f "$NEXT_INDEX"
then
USE_INDEX="$NEXT_INDEX"
else
USE_INDEX="$THIS_INDEX"
fi
GIT_INDEX_FILE="$USE_INDEX" \
git-update-index -q $unmerged_ok_if_status --refresh || exit
################################################################
# If the request is status, just show it and exit.
case "$0" in
*status)
run_status
exit $?
esac
################################################################
# Grab commit message, write out tree and make commit.
if test t = "$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_INDEX_FILE="$USE_INDEX" "$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
{
test -z "$verbose" || echo '---'
run_status
} >>"$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 "$GIT_DIR"/COMMIT_EDITMSG || exit
fi
esac
sed -e '
/^---$/{
s///
q
}
/^#/d
' "$GIT_DIR"/COMMIT_EDITMSG |
git-stripspace >"$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=$(GIT_INDEX_FILE="$USE_INDEX" 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" &&
if test -f "$NEXT_INDEX"
then
mv "$NEXT_INDEX" "$THIS_INDEX"
else
: ;# happy
fi
else
echo >&2 "* no commit message? aborting commit."
false
fi
ret="$?"
rm -f "$GIT_DIR/COMMIT_MSG" "$GIT_DIR/COMMIT_EDITMSG"
git-rerere
if test -x "$GIT_DIR"/hooks/post-commit && test "$ret" = 0
then
"$GIT_DIR"/hooks/post-commit
fi
exit "$ret"
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