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772d8a3b63
When git-reset --hard is used and a subdirectory becomes empty (as it contains no tracked files in the target tree) the empty subdirectory should be removed. This matches the behavior of git-checkout-index and git-read-tree -m which would not have created the subdirectory or would have deleted it when updating the working directory. Subdirectories which are not empty will be left behind. This may happen if the subdirectory still contains object files from the user's build process (for example). [jc: simplified the logic a bit, while keeping the test script.]
106 lines
2.2 KiB
Bash
Executable file
106 lines
2.2 KiB
Bash
Executable file
#!/bin/sh
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USAGE='[--mixed | --soft | --hard] [<commit-ish>]'
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. git-sh-setup
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tmp=${GIT_DIR}/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="$1"
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shift
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;;
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-*)
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usage ;;
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esac
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rev=$(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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git-update-ref HEAD "$rev"
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case "$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 $_;
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while (s|/[^/]*$||) {
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rmdir($_) or last;
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}
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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" "$GIT_DIR/rr-cache/MERGE_RR"
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