Allow arc to parse svnlook diffs from moves/copies

Summary: Ref T4697. This is similar to the existing stuff, but `svnlook diff ...` can also produce a "Copied" header. Currently, we choke on it in Herald when running pre-commit rules.

Test Plan: Added and ran tests. In the next diff, used this in a real system.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T4697

Differential Revision: https://secure.phabricator.com/D8653

src/parser/ArcanistDiffParser.php

@@ -232,7 +232,7 @@ final class ArcanistDiffParser {
         // This is a normal SVN text change, probably from "svn diff".
         '(?P<type>Index): (?P<cur>.+)',
         // This is an SVN text change, probably from "svnlook diff".
-        '(?P<type>Modified|Added|Deleted): (?P<cur>.+)',
+        '(?P<type>Modified|Added|Deleted|Copied): (?P<cur>.+)',
         // This is an SVN property change, probably from "svn diff".
         '(?P<type>Property changes on): (?P<cur>.+)',
         // This is a git commit message, probably from "git show".
@@ -314,6 +314,7 @@ final class ArcanistDiffParser {
         case 'Modified':
         case 'Added':
         case 'Deleted':
+        case 'Copied':
           $this->parseIndexHunk($change);
           break;
         case 'Property changes on':

src/parser/__tests__/ArcanistDiffParserTestCase.php

@@ -573,6 +573,7 @@ EOTEXT
       case 'svnlook-basics.svndiff':
       case 'svnlook-add.svndiff':
       case 'svnlook-delete.svndiff':
+      case 'svnlook-copied.svndiff':
         $this->assertEqual(1, count($changes));
         break;
       case 'git-format-patch.gitdiff':

src/parser/__tests__/diff/svnlook-copied.svndiff

@@ -0,0 +1,7 @@
+Copied: movedfile (from rev 30, newfile)
+===================================================================
+--- movedfile	                        (rev 0)
++++ movedfile	2014-03-31 02:21:25 UTC (txn 30-1o)
+@@ -0,0 +1,2 @@
++blamo
++blamo