rm git-rerere.perl -- it is now a built-in.

Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 0 insertions, 284 deletions

diff --git a/git-rerere.perl b/git-rerere.perl
deleted file mode 100755
index 4f692091e7..0000000000
--- a/git-rerere.perl
+++ /dev/null
@@ -1,284 +0,0 @@
-#!/usr/bin/perl
-#
-# REuse REcorded REsolve.  This tool records a conflicted automerge
-# result and its hand resolution, and helps to resolve future
-# automerge that results in the same conflict.
-#
-# To enable this feature, create a directory 'rr-cache' under your
-# .git/ directory.
-
-use Digest;
-use File::Path;
-use File::Copy;
-
-my $git_dir = $::ENV{GIT_DIR} || ".git";
-my $rr_dir = "$git_dir/rr-cache";
-my $merge_rr = "$git_dir/rr-cache/MERGE_RR";
-
-my %merge_rr = ();
-
-sub read_rr {
-	if (!-f $merge_rr) {
-		%merge_rr = ();
-		return;
-	}
-	my $in;
-	local $/ = "\0";
-	open $in, "<$merge_rr" or die "$!: $merge_rr";
-	while (<$in>) {
-		chomp;
-		my ($name, $path) = /^([0-9a-f]{40})\t(.*)$/s;
-		$merge_rr{$path} = $name;
-	}
-	close $in;
-}
-
-sub write_rr {
-	my $out;
-	open $out, ">$merge_rr" or die "$!: $merge_rr";
-	for my $path (sort keys %merge_rr) {
-		my $name = $merge_rr{$path};
-		print $out "$name\t$path\0";
-	}
-	close $out;
-}
-
-sub compute_conflict_name {
-	my ($path) = @_;
-	my @side = ();
-	my $in;
-	open $in, "<$path"  or die "$!: $path";
-
-	my $sha1 = Digest->new("SHA-1");
-	my $hunk = 0;
-	while (<$in>) {
-		if (/^<<<<<<< .*/) {
-			$hunk++;
-			@side = ([], undef);
-		}
-		elsif (/^=======$/) {
-			$side[1] = [];
-		}
-		elsif (/^>>>>>>> .*/) {
-			my ($one, $two);
-			$one = join('', @{$side[0]});
-			$two = join('', @{$side[1]});
-			if ($two le $one) {
-				($one, $two) = ($two, $one);
-			}
-			$sha1->add($one);
-			$sha1->add("\0");
-			$sha1->add($two);
-			$sha1->add("\0");
-			@side = ();
-		}
-		elsif (@side == 0) {
-			next;
-		}
-		elsif (defined $side[1]) {
-			push @{$side[1]}, $_;
-		}
-		else {
-			push @{$side[0]}, $_;
-		}
-	}
-	close $in;
-	return ($sha1->hexdigest, $hunk);
-}
-
-sub record_preimage {
-	my ($path, $name) = @_;
-	my @side = ();
-	my ($in, $out);
-	open $in, "<$path"  or die "$!: $path";
-	open $out, ">$name" or die "$!: $name";
-
-	while (<$in>) {
-		if (/^<<<<<<< .*/) {
-			@side = ([], undef);
-		}
-		elsif (/^=======$/) {
-			$side[1] = [];
-		}
-		elsif (/^>>>>>>> .*/) {
-			my ($one, $two);
-			$one = join('', @{$side[0]});
-			$two = join('', @{$side[1]});
-			if ($two le $one) {
-				($one, $two) = ($two, $one);
-			}
-			print $out "<<<<<<<\n";
-			print $out $one;
-			print $out "=======\n";
-			print $out $two;
-			print $out ">>>>>>>\n";
-			@side = ();
-		}
-		elsif (@side == 0) {
-			print $out $_;
-		}
-		elsif (defined $side[1]) {
-			push @{$side[1]}, $_;
-		}
-		else {
-			push @{$side[0]}, $_;
-		}
-	}
-	close $out;
-	close $in;
-}
-
-sub find_conflict {
-	my $in;
-	local $/ = "\0";
-	my $pid = open($in, '-|');
-	die "$!" unless defined $pid;
-	if (!$pid) {
-		exec(qw(git ls-files -z -u)) or die "$!: ls-files";
-	}
-	my %path = ();
-	my @path = ();
-	while (<$in>) {
-		chomp;
-		my ($mode, $sha1, $stage, $path) =
-		    /^([0-7]+) ([0-9a-f]{40}) ([123])\t(.*)$/s;
-		$path{$path} |= (1 << $stage);
-	}
-	close $in;
-	while (my ($path, $status) = each %path) {
-		if ($status == 14) { push @path, $path; }
-	}
-	return @path;
-}
-
-sub merge {
-	my ($name, $path) = @_;
-	record_preimage($path, "$rr_dir/$name/thisimage");
-	unless (system('git', 'merge-file', map { "$rr_dir/$name/${_}image" }
-		       qw(this pre post))) {
-		my $in;
-		open $in, "<$rr_dir/$name/thisimage" or
-		    die "$!: $name/thisimage";
-		my $out;
-		open $out, ">$path" or die "$!: $path";
-		while (<$in>) { print $out $_; }
-		close $in;
-		close $out;
-		return 1;
-	}
-	return 0;
-}
-
-sub garbage_collect_rerere {
-	# We should allow specifying these from the command line and
-	# that is why the caller gives @ARGV to us, but I am lazy.
-
-	my $cutoff_noresolve = 15; # two weeks
-	my $cutoff_resolve = 60; # two months
-	my @to_remove;
-	while (<$rr_dir/*/preimage>) {
-		my ($dir) = /^(.*)\/preimage$/;
-		my $cutoff = ((-f "$dir/postimage")
-			      ? $cutoff_resolve
-			      : $cutoff_noresolve);
-		my $age = -M "$_";
-		if ($cutoff <= $age) {
-			push @to_remove, $dir;
-		}
-	}
-	if (@to_remove) {
-		rmtree(\@to_remove);
-	}
-}
-
--d "$rr_dir" || exit(0);
-
-read_rr();
-
-if (@ARGV) {
-	my $arg = shift @ARGV;
-	if ($arg eq 'clear') {
-		for my $path (keys %merge_rr) {
-			my $name = $merge_rr{$path};
-			if (-d "$rr_dir/$name" &&
-			    ! -f "$rr_dir/$name/postimage") {
-				rmtree(["$rr_dir/$name"]);
-			}
-		}
-		unlink $merge_rr;
-	}
-	elsif ($arg eq 'status') {
-		for my $path (keys %merge_rr) {
-			print $path, "\n";
-		}
-	}
-	elsif ($arg eq 'diff') {
-		for my $path (keys %merge_rr) {
-			my $name = $merge_rr{$path};
-			system('diff', ((@ARGV == 0) ? ('-u') : @ARGV),
-				'-L', "a/$path", '-L', "b/$path",
-				"$rr_dir/$name/preimage", $path);
-		}
-	}
-	elsif ($arg eq 'gc') {
-		garbage_collect_rerere(@ARGV);
-	}
-	else {
-		die "$0 unknown command: $arg\n";
-	}
-	exit 0;
-}
-
-my %conflict = map { $_ => 1 } find_conflict();
-
-# MERGE_RR records paths with conflicts immediately after merge
-# failed.  Some of the conflicted paths might have been hand resolved
-# in the working tree since then, but the initial run would catch all
-# and register their preimages.
-
-for my $path (keys %conflict) {
-	# This path has conflict.  If it is not recorded yet,
-	# record the pre-image.
-	if (!exists $merge_rr{$path}) {
-		my ($name, $hunk) = compute_conflict_name($path);
-		next unless ($hunk);
-		$merge_rr{$path} = $name;
-		if (! -d "$rr_dir/$name") {
-			mkpath("$rr_dir/$name", 0, 0777);
-			print STDERR "Recorded preimage for '$path'\n";
-			record_preimage($path, "$rr_dir/$name/preimage");
-		}
-	}
-}
-
-# Now some of the paths that had conflicts earlier might have been
-# hand resolved.  Others may be similar to a conflict already that
-# was resolved before.
-
-for my $path (keys %merge_rr) {
-	my $name = $merge_rr{$path};
-
-	# We could resolve this automatically if we have images.
-	if (-f "$rr_dir/$name/preimage" &&
-	    -f "$rr_dir/$name/postimage") {
-		if (merge($name, $path)) {
-			print STDERR "Resolved '$path' using previous resolution.\n";
-			# Then we do not have to worry about this path
-			# anymore.
-			delete $merge_rr{$path};
-			next;
-		}
-	}
-
-	# Let's see if we have resolved it.
-	(undef, my $hunk) = compute_conflict_name($path);
-	next if ($hunk);
-
-	print STDERR "Recorded resolution for '$path'.\n";
-	copy($path, "$rr_dir/$name/postimage");
-	# And we do not have to worry about this path anymore.
-	delete $merge_rr{$path};
-}
-
-# Write out the rest.
-write_rr();