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https://github.com/git/git
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c3bc895c81
Even without the trouble it causes to people without GNU xargs, it was not really necessary to print from Perl and then remove it outside. Just unlink it inside Perl. 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
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. git-sh-setup || die "Not a git archive"
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tmp=/var/tmp/reset.$$
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trap 'rm -f $tmp-*' 0 1 2 3 15
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reset_type=--mixed
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case "$1" in
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--mixed | --soft | --hard)
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reset_type="$1"
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shift
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;;
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esac
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rev=$(git-rev-parse --verify --default HEAD "$@") || exit
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rev=$(git-rev-parse --verify $rev^0) || exit
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# We need to remember the set of paths that _could_ be left
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# behind before a hard reset, so that we can remove them.
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if test "$reset_type" = "--hard"
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then
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{
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git-ls-files --stage -z
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git-rev-parse --verify HEAD 2>/dev/null &&
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git-ls-tree -r -z HEAD
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} | perl -e '
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use strict;
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my %seen;
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$/ = "\0";
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while (<>) {
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chomp;
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my ($info, $path) = split(/\t/, $_);
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next if ($info =~ / tree /);
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if (!$seen{$path}) {
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$seen{$path} = 1;
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print "$path\0";
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}
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}
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' >$tmp-exists
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fi
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# Soft reset does not touch the index file nor the working tree
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# at all, but requires them in a good order. Other resets reset
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# the index file to the tree object we are switching to.
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if test "$reset_type" = "--soft"
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then
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if test -f "$GIT_DIR/MERGE_HEAD" ||
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test "" != "$(git-ls-files --unmerged)"
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then
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die "Cannot do a soft reset in the middle of a merge."
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fi
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else
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git-read-tree --reset "$rev" || exit
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fi
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# Any resets update HEAD to the head being switched to.
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if orig=$(git-rev-parse --verify HEAD 2>/dev/null)
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then
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echo "$orig" >"$GIT_DIR/ORIG_HEAD"
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else
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rm -f "$GIT_DIR/ORIG_HEAD"
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fi
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echo "$rev" >"$GIT_DIR/HEAD"
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case "$reset_type" in
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--hard )
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# Hard reset matches the working tree to that of the tree
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# being switched to.
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git-checkout-index -f -u -q -a
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git-ls-files --cached -z |
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perl -e '
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use strict;
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my (%keep, $fh);
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$/ = "\0";
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while (<STDIN>) {
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chomp;
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$keep{$_} = 1;
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}
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open $fh, "<", $ARGV[0]
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or die "cannot open $ARGV[0]";
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while (<$fh>) {
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chomp;
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if (! exists $keep{$_}) {
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# it is ok if this fails -- it may already
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# have been culled by checkout-index.
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unlink $_;
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}
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}
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' $tmp-exists
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;;
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--soft )
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;; # Nothing else to do
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--mixed )
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# Report what has not been updated.
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git-update-index --refresh
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;;
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esac
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rm -f "$GIT_DIR/MERGE_HEAD"
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