1 files changed, 51 insertions, 0 deletions
diff --git a/includes/import/ImportSource.php b/includes/import/ImportSource.php
new file mode 100644
index 000000000000..75d20b4eaa99
--- /dev/null
+++ b/includes/import/ImportSource.php
@@ -0,0 +1,51 @@
+<?php
+/**
+ * Source interface for XML import.
+ *
+ * Copyright © 2003,2005 Brion Vibber <brion@pobox.com>
+ * https://www.mediawiki.org/
+ *
+ * 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 2 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup SpecialPage
+ */
+
+/**
+ * Source interface for XML import.
+ *
+ * @ingroup SpecialPage
+ */
+interface ImportSource {
+
+	/**
+	 * Indicates whether the end of the input has been reached.
+	 * Will return true after a finite number of calls to readChunk.
+	 *
+	 * @return bool true if there is no more input, false otherwise.
+	 */
+	function atEnd();
+
+	/**
+	 * Return a chunk of the input, as a (possibly empty) string.
+	 * When the end of input is reached, readChunk() returns false.
+	 * If atEnd() returns false, readChunk() will return a string.
+	 * If atEnd() returns true, readChunk() will return false.
+	 *
+	 * @return bool|string
+	 */
+	function readChunk();
+}