* tool/file2lastrev.rb (VCS::detect): Add support for Subversion

1.7 which adopted a whole new working directory structure.

* tool/file2lastrev.rb (VCS::detect): Simply use .each instead of
  .sort.reverse_each which looks too arbitrary.	 If you want SVN
  to be tried first, then you just have to register it first as it
  is right now.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34176 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,13 @@
+Mon Jan  2 22:08:00 2012  Akinori MUSHA  <knu@iDaemons.org>
+
+	* tool/file2lastrev.rb (VCS::detect): Add support for Subversion
+	  1.7 which adopted a whole new working directory structure.
+
+	* tool/file2lastrev.rb (VCS::detect): Simply use .each instead of
+	  .sort.reverse_each which looks too arbitrary.  If you want SVN
+	  to be tried first, then you just have to register it first as it
+	  is right now.
+
 Mon Jan  2 20:53:36 2012  Tanaka Akira  <akr@fsij.org>
 
 	* lib/securerandom.rb (random_bytes): use IO#read instead of

tool/file2lastrev.rb

@@ -22,8 +22,15 @@ class VCS
   end
 
   def self.detect(path)
-    @@dirs.sort.reverse_each do |dir, klass|
+    @@dirs.each do |dir, klass|
-      return klass.new(path) if File.directory?("#{path}/#{dir}")
+      return klass.new(path) if File.directory?(File.join(path, dir))
+      prev = path
+      loop {
+        curr = File.realpath(File.join(prev, '..'))
+        break if curr == prev	# stop at the root directory
+        return klass.new(path) if File.directory?(File.join(curr, dir))
+        prev = curr
+      }
     end
     raise VCS::NotFoundError, "does not seem to be under a vcs: #{path}"
   end
@@ -127,7 +134,7 @@ parser = OptionParser.new {|opts|
 }
 parser.parse! rescue abort "#{File.basename(Program)}: #{$!}\n#{parser}"
 
-srcdir = srcdir ? srcdir : File.dirname(File.dirname(Program))
+srcdir ||= File.dirname(File.dirname(Program))
 begin
   vcs = VCS.detect(srcdir)
 rescue VCS::NotFoundError => e