From ef1db305643600d7f7cb21e60d57c01c428e7a4e Mon Sep 17 00:00:00 2001
From: Joey Hess <joey@kodama.kitenet.net>
Date: Fri, 12 Oct 2007 16:08:08 -0400
Subject: [PATCH] support for tracking repo deletions

---
 TODO | 11 +----------
 mr   | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 10 deletions(-)

diff --git a/TODO b/TODO
index d12dbd2..6621db6 100644
--- a/TODO
+++ b/TODO
@@ -1,4 +1,5 @@
 * more revision control systems
+
 * support for tracking repo renames
 
   It should be possible to tell mr that there used to be a repo at
@@ -11,16 +12,6 @@
 
   (Support multple renames of a single repo?)
 
-* repo deletions
-
-  Handling repo deletions might also be possible, but is tricky, since
-  there's no good way to tell if a local checkout of a given repo is clean
-  and really should be deleted. Probably better for mr to just warn that a
-  repo still exists on disk that it is no longer managed.
-
-  [src/foo/baz]
-  deleted = true
-
 * mr register
 
   Idea is you check out a repo and then use mr register to add it to the
diff --git a/mr b/mr
index bed4cac..4243194 100755
--- a/mr
+++ b/mr
@@ -166,6 +166,14 @@ If the "chain" parameter is set and its command returns nonzero, then B<mr>
 will try to load a .mrconfig file from the root of the repository. (You
 should avoid chaining from repositories with untrusted committers.)
 
+=item deleted
+
+If the "deleted" parameter is set and its command returns nonzero, then
+B<mr> will treat the repository as deleted. It won't ever actually delete
+the repository, but it will warn if it sees the repsoitory's directory.
+This is useful when one mrconfig file is shared amoung multiple machines,
+to keep track of and remember to delete old repositories.
+
 =item lib
 
 The "lib" parameter can specify some shell code that will be run before each
@@ -286,6 +294,22 @@ sub action {
 	my $lib= exists $config{$topdir}{$subdir}{lib} ?
 	                $config{$topdir}{$subdir}{lib}."\n" : "";
 
+	if (exists $config{$topdir}{$subdir}{deleted}) {
+		if (! -d $dir) {
+			next;
+		}
+		else {
+			my $test="set -e;".$lib.$config{$topdir}{$subdir}{deleted};
+			print "mr $action: running deleted test >>$test<<\n" if $verbose;
+			my $ret=system($test);
+			if ($ret >> 8 == 0) {
+				print STDERR "mr error: $dir should be deleted yet still exists\n\n";
+				push @failed, $dir;
+				return;
+			}
+		}
+	}
+
 	if ($action eq 'checkout') {
 		if (-d $dir) {
 			print "mr $action: $dir already exists, skipping checkout\n" if $verbose;
-- 
2.39.2