Adding indexing_constants.php file to repository, a=cpollett

diff --git a/index.php b/index.php
index 217b68217..42cd72b8d 100755
--- a/index.php
+++ b/index.php
@@ -42,7 +42,6 @@ define("BASE_DIR", substr($_SERVER['SCRIPT_FILENAME'], 0,-strlen("index.php")));
  * Load the configuration file
  */
 require_once(BASE_DIR.'configs/config.php');
-
 ini_set("memory_limit","200M");
 header("X-FRAME-OPTIONS: DENY"); //prevent click jacking
 session_name(SESSION_NAME);
diff --git a/lib/indexing_constants.php b/lib/indexing_constants.php
new file mode 100644
index 000000000..ba5348276
--- /dev/null
+++ b/lib/indexing_constants.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ *  SeekQuarry/Yioop --
+ *  Open Source Pure PHP Search Engine, Crawler, and Indexer
+ *
+ *  Copyright (C) 2009, 2010  Chris Pollett chris@pollett.org
+ *
+ *  LICENSE:
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *  END LICENSE
+ *
+ * @author Chris Pollett chris@pollett.org
+ * @package seek_quarry
+ * @subpackage library
+ * @license http://www.gnu.org/licenses/ GPL3
+ * @link http://www.seekquarry.com/
+ * @copyright 2009, 2010
+ * @filesource
+ */
+
+if(!defined('BASE_DIR')) {echo "BAD REQUEST"; exit();}
+
+/**
+ * Enumerative interface for common constants between WordIterator and
+ * IndexArchiveBundle
+ *
+ * These constants are used as fields in arrays. They are negative to
+ * distinguish them from normal array elements 0, 1, 2... However, this
+ * means you need to be slightly careful if you try to sort the array
+ * as this might screw things up
+ *
+ * @author Chris Pollett
+ * @package seek_quarry
+ * @subpackage library
+ */
+interface IndexingConstants
+{
+    const COUNT = -1;
+    const END_BLOCK = -2;
+    const LIST_OFFSET = -3;
+    const POINT_BLOCK = -4;
+    const PARTIAL_COUNT = -5;
+    const NAME = -6;
+}
+?>