From d9022f63880ce039446fba8364f68e656b7bf4cb Mon Sep 17 00:00:00 2001
From: Pierre Schmitz <pierre@archlinux.de>
Date: Thu, 3 May 2012 13:01:35 +0200
Subject: Update to MediaWiki 1.19.0

---
 includes/filerepo/backend/TempFSFile.php | 92 ++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 includes/filerepo/backend/TempFSFile.php

(limited to 'includes/filerepo/backend/TempFSFile.php')

diff --git a/includes/filerepo/backend/TempFSFile.php b/includes/filerepo/backend/TempFSFile.php
new file mode 100644
index 00000000..7843d6cd
--- /dev/null
+++ b/includes/filerepo/backend/TempFSFile.php
@@ -0,0 +1,92 @@
+<?php
+/**
+ * @file
+ * @ingroup FileBackend
+ */
+
+/**
+ * This class is used to hold the location and do limited manipulation
+ * of files stored temporarily (usually this will be $wgTmpDirectory)
+ *
+ * @ingroup FileBackend
+ */
+class TempFSFile extends FSFile {
+	protected $canDelete = false; // bool; garbage collect the temp file
+
+	/** @var Array of active temp files to purge on shutdown */
+	protected static $instances = array();
+
+	/**
+	 * Make a new temporary file on the file system.
+	 * Temporary files may be purged when the file object falls out of scope.
+	 * 
+	 * @param $prefix string
+	 * @param $extension string
+	 * @return TempFSFile|null 
+	 */
+	public static function factory( $prefix, $extension = '' ) {
+		$base = wfTempDir() . '/' . $prefix . dechex( mt_rand( 0, 99999999 ) );
+		$ext = ( $extension != '' ) ? ".{$extension}" : "";
+		for ( $attempt = 1; true; $attempt++ ) {
+			$path = "{$base}-{$attempt}{$ext}";
+			wfSuppressWarnings();
+			$newFileHandle = fopen( $path, 'x' );
+			wfRestoreWarnings();
+			if ( $newFileHandle ) {
+				fclose( $newFileHandle );
+				break; // got it
+			}
+			if ( $attempt >= 15 ) {
+				return null; // give up
+			}
+		}
+		$tmpFile = new self( $path );
+		$tmpFile->canDelete = true; // safely instantiated
+		return $tmpFile;
+	}
+
+	/**
+	 * Purge this file off the file system
+	 * 
+	 * @return bool Success
+	 */
+	public function purge() {
+		$this->canDelete = false; // done
+		wfSuppressWarnings();
+		$ok = unlink( $this->path );
+		wfRestoreWarnings();
+		return $ok;
+	}
+
+	/**
+	 * Clean up the temporary file only after an object goes out of scope
+	 *
+	 * @param $object Object
+	 * @return void
+	 */
+	public function bind( $object ) {
+		if ( is_object( $object ) ) {
+			$object->tempFSFileReferences[] = $this;
+		}
+	}
+
+	/**
+	 * Set flag to not clean up after the temporary file
+	 *
+	 * @return void
+	 */
+	public function preserve() {
+		$this->canDelete = false;
+	}
+
+	/**
+	 * Cleans up after the temporary file by deleting it
+	 */
+	function __destruct() {
+		if ( $this->canDelete ) {
+			wfSuppressWarnings();
+			unlink( $this->path );
+			wfRestoreWarnings();
+		}
+	}
+}
-- 
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