Merge branch 'rj/header'

[thirdparty/git.git] / git-reset.sh

diff --git a/git-reset.sh b/git-reset.sh
index 6cb073cb16f8b8d8b923bd0cd77be00da0e169e3..36fc8ce25b39682ba256a8d39bf9a393907ef43d 100755 (executable)
--- a/git-reset.sh
+++ b/git-reset.sh
@@ -6,6 +6,7 @@ USAGE='[--mixed | --soft | --hard]  [<commit-ish>]'
 tmp=${GIT_DIR}/reset.$$
 trap 'rm -f $tmp-*' 0 1 2 3 15
 
+update=
 reset_type=--mixed
 case "$1" in
 --mixed | --soft | --hard)
@@ -16,31 +17,18 @@ case "$1" in
         usage ;;
 esac
 
-rev=$(git-rev-parse --verify --default HEAD "$@") || exit
+case $# in
+0) rev=HEAD ;;
+1) rev=$(git-rev-parse --verify "$1") || exit ;;
+*) usage ;;
+esac
 rev=$(git-rev-parse --verify $rev^0) || exit
 
 # 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
@@ -54,7 +42,7 @@ then
                die "Cannot do a soft reset in the middle of a merge."
        fi
 else
-       git-read-tree --reset "$rev" || exit
+       git-read-tree --reset $update "$rev" || exit
 fi
 
 # Any resets update HEAD to the head being switched to.
@@ -64,37 +52,12 @@ then
 else
        rm -f "$GIT_DIR/ORIG_HEAD"
 fi
-git-update-ref HEAD "$rev"
+git-update-ref -m "reset $reset_type $*" HEAD "$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 $_;
-                               while (s|/[^/]*$||) {
-                                       rmdir($_) or last;
-                               }
-                       }
-               }
-       ' $tmp-exists
-       ;;
+       ;; # Nothing else to do
 --soft )
        ;; # Nothing else to do
 --mixed )
@@ -103,4 +66,6 @@ case "$reset_type" in
        ;;
 esac
 
-rm -f "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/rr-cache/MERGE_RR"
+rm -f "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/rr-cache/MERGE_RR" "$GIT_DIR/SQUASH_MSG"
+
+exit $update_ref_status