X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=git-reset.sh;h=1dc606fbd3fd29f5f4c9928a2518df46109ef449;hb=689b4d552b8108d2c92c63258990ecd2bc791739;hp=f9995cadf563a7b3b2c1dcdeea3bf862feac2e4b;hpb=0542f48c894f924d94a2bd05f7e4cbab25656112;p=git.git

diff --git a/git-reset.sh b/git-reset.sh
index f9995cadf..1dc606fbd 100755
--- a/git-reset.sh
+++ b/git-reset.sh
@@ -1,42 +1,63 @@
 #!/bin/sh
-. git-sh-setup || die "Not a git archive"
+#
+# Copyright (c) 2005, 2006 Linus Torvalds and Junio C Hamano
+#
+USAGE='[--mixed | --soft | --hard]  [<commit-ish>] [ [--] <paths>...]'
+SUBDIRECTORY_OK=Yes
+. git-sh-setup
+set_reflog_action "reset $*"
+require_work_tree
 
-tmp=/var/tmp/reset.$$
-trap 'rm -f $tmp-*' 0 1 2 3 15
+update= reset_type=--mixed
+unset rev
 
-reset_type=--mixed
-case "$1" in
---mixed | --soft | --hard)
-	reset_type="$1"
+while case $# in 0) break ;; esac
+do
+	case "$1" in
+	--mixed | --soft | --hard)
+		reset_type="$1"
+		;;
+	--)
+		break
+		;;
+	-*)
+		usage
+		;;
+	*)
+		rev=$(git rev-parse --verify "$1") || exit
+		shift
+		break
+		;;
+	esac
 	shift
-	;;
-esac
+done
+
+: ${rev=HEAD}
+rev=$(git rev-parse --verify $rev^0) || exit
 
-rev=$(git-rev-parse --verify --default HEAD "$@") || exit
-rev=$(git-rev-parse --verify $rev^0) || exit
+# Skip -- in "git reset HEAD -- foo" and "git reset -- foo".
+case "$1" in --) shift ;; esac
+
+# git reset --mixed tree [--] paths... can be used to
+# load chosen paths from the tree into the index without
+# affecting the working tree nor HEAD.
+if test $# != 0
+then
+	test "$reset_type" = "--mixed" ||
+		die "Cannot do partial $reset_type reset."
+
+	git diff-index --cached $rev -- "$@" |
+	sed -e 's/^:\([0-7][0-7]*\) [0-7][0-7]* \([0-9a-f][0-9a-f]*\) [0-9a-f][0-9a-f]* [A-Z]	\(.*\)$/\1 \2	\3/' |
+	git update-index --add --remove --index-info || exit
+	git update-index --refresh
+	exit
+fi
+
+cd_to_toplevel
 
-# We need to remember the set of paths that _could_ be left
-# behind before a hard reset, so that we can remove them.
 if test "$reset_type" = "--hard"
 then
-	{
-		git-ls-files --stage -z
-		git-rev-parse --verify HEAD 2>/dev/null &&
-		git-ls-tree -r -z HEAD
-	} | perl -e '
-	    use strict;
-	    my %seen;
-	    $/ = "\0";
-	    while (<>) {
-		chomp;
-		my ($info, $path) = split(/\t/, $_);
-		next if ($info =~ / tree /);
-		if (!$seen{$path}) {
-			$seen{$path} = 1;
-			print "$path\0";
-		}
-	    }
-	' >$tmp-exists
+	update=-u
 fi
 
 # Soft reset does not touch the index file nor the working tree
@@ -45,55 +66,41 @@ fi
 if test "$reset_type" = "--soft"
 then
 	if test -f "$GIT_DIR/MERGE_HEAD" ||
-	   test "" != "$(git-ls-files --unmerged)"
+	   test "" != "$(git ls-files --unmerged)"
 	then
 		die "Cannot do a soft reset in the middle of a merge."
 	fi
 else
-	git-read-tree --reset "$rev" || exit
+	git read-tree -v --reset $update "$rev" || exit
 fi
 
 # Any resets update HEAD to the head being switched to.
-if orig=$(git-rev-parse --verify HEAD 2>/dev/null)
+if orig=$(git rev-parse --verify HEAD 2>/dev/null)
 then
 	echo "$orig" >"$GIT_DIR/ORIG_HEAD"
 else
 	rm -f "$GIT_DIR/ORIG_HEAD"
 fi
-git-update-ref HEAD "$rev"
+git update-ref -m "$GIT_REFLOG_ACTION" HEAD "$rev"
+update_ref_status=$?
 
 case "$reset_type" in
 --hard )
-	# Hard reset matches the working tree to that of the tree
-	# being switched to.
-	git-checkout-index -f -u -q -a
-	git-ls-files --cached -z |
-	perl -e '
-		use strict;
-		my (%keep, $fh);
-		$/ = "\0";
-		while (<STDIN>) {
-			chomp;
-			$keep{$_} = 1;
-		}
-		open $fh, "<", $ARGV[0]
-			or die "cannot open $ARGV[0]";
-		while (<$fh>) {
-			chomp;
-			if (! exists $keep{$_}) {
-				# it is ok if this fails -- it may already
-				# have been culled by checkout-index.
-				unlink $_;
-			}
-		}
-	' $tmp-exists
+	test $update_ref_status = 0 && {
+		printf "HEAD is now at "
+		GIT_PAGER= git log --max-count=1 --pretty=oneline \
+			--abbrev-commit HEAD
+	}
 	;;
 --soft )
 	;; # Nothing else to do
 --mixed )
 	# Report what has not been updated.
-	git-update-index --refresh
+	git update-index --refresh
 	;;
 esac
 
-rm -f "$GIT_DIR/MERGE_HEAD"
+rm -f "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/rr-cache/MERGE_RR" \
+	"$GIT_DIR/SQUASH_MSG" "$GIT_DIR/MERGE_MSG"
+
+exit $update_ref_status