mirror of
https://github.com/git/git.git
synced 2024-11-24 02:17:02 +08:00
bf7960eb51
This uses the git-update-ref command in scripts for safer updates. Also places where we used to read HEAD ref by using "cat" were fixed to use git-rev-parse. This will matter when we start using symbolic references. Signed-off-by: Junio C Hamano <junkio@cox.net>
100 lines
2.1 KiB
Bash
Executable File
100 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
|
|
. git-sh-setup || die "Not a git archive"
|
|
|
|
tmp=/var/tmp/reset.$$
|
|
trap 'rm -f $tmp-*' 0 1 2 3 15
|
|
|
|
reset_type=--mixed
|
|
case "$1" in
|
|
--mixed | --soft | --hard)
|
|
reset_type="$1"
|
|
shift
|
|
;;
|
|
esac
|
|
|
|
rev=$(git-rev-parse --verify --default HEAD "$@") || exit
|
|
rev=$(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
|
|
fi
|
|
|
|
# Soft reset does not touch the index file nor the working tree
|
|
# at all, but requires them in a good order. Other resets reset
|
|
# the index file to the tree object we are switching to.
|
|
if test "$reset_type" = "--soft"
|
|
then
|
|
if test -f "$GIT_DIR/MERGE_HEAD" ||
|
|
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
|
|
fi
|
|
|
|
# Any resets update HEAD to the head being switched to.
|
|
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 "$rev"
|
|
|
|
case "$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 $_;
|
|
}
|
|
}
|
|
' $tmp-exists
|
|
;;
|
|
--soft )
|
|
;; # Nothing else to do
|
|
--mixed )
|
|
# Report what has not been updated.
|
|
git-update-index --refresh
|
|
;;
|
|
esac
|
|
|
|
rm -f "$GIT_DIR/MERGE_HEAD"
|