add oc:// streamwrapper to provide access to ownCloud's virtual filesystem

lib/base.php

@@ -424,6 +424,7 @@ class OC
 		stream_wrapper_register('fakedir', 'OC\Files\Stream\Dir');
 		stream_wrapper_register('static', 'OC\Files\Stream\StaticStream');
 		stream_wrapper_register('close', 'OC\Files\Stream\Close');
+		stream_wrapper_register('oc', 'OC\Files\Stream\OC');
 
 		self::checkConfig();
 		self::checkInstalled();

lib/files/stream/oc.php

@@ -0,0 +1,129 @@
+<?php
+/**
+ * Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Files\Stream;
+
+/**
+ * a stream wrappers for ownCloud's virtual filesystem
+ */
+class OC {
+	/**
+	 * @var \OC\Files\View
+	 */
+	static private $rootView;
+
+	private $path;
+	private $dirSource;
+	private $fileSource;
+	private $meta;
+
+	private function setup(){
+		if (!self::$rootView) {
+			self::$rootView = new \OC\Files\View('');
+		}
+	}
+
+	public function stream_open($path, $mode, $options, &$opened_path) {
+		$this->setup();
+		$path = substr($path, strlen('oc://'));
+		$this->path = $path;
+		$this->fileSource = self::$rootView->fopen($path, $mode);
+		if (is_resource($this->fileSource)) {
+			$this->meta = stream_get_meta_data($this->fileSource);
+		}
+		return is_resource($this->fileSource);
+	}
+
+	public function stream_seek($offset, $whence = SEEK_SET) {
+		fseek($this->fileSource, $offset, $whence);
+	}
+
+	public function stream_tell() {
+		return ftell($this->fileSource);
+	}
+
+	public function stream_read($count) {
+		return fread($this->fileSource, $count);
+	}
+
+	public function stream_write($data) {
+		return fwrite($this->fileSource, $data);
+	}
+
+	public function stream_set_option($option, $arg1, $arg2) {
+		switch ($option) {
+			case STREAM_OPTION_BLOCKING:
+				stream_set_blocking($this->fileSource, $arg1);
+				break;
+			case STREAM_OPTION_READ_TIMEOUT:
+				stream_set_timeout($this->fileSource, $arg1, $arg2);
+				break;
+			case STREAM_OPTION_WRITE_BUFFER:
+				stream_set_write_buffer($this->fileSource, $arg1, $arg2);
+		}
+	}
+
+	public function stream_stat() {
+		return fstat($this->fileSource);
+	}
+
+	public function stream_lock($mode) {
+		flock($this->fileSource, $mode);
+	}
+
+	public function stream_flush() {
+		return fflush($this->fileSource);
+	}
+
+	public function stream_eof() {
+		return feof($this->fileSource);
+	}
+
+	public function url_stat($path) {
+		$this->setup();
+		$path = substr($path, strlen('oc://'));
+		if (self::$rootView->file_exists($path)) {
+			return self::$rootView->stat($path);
+		} else {
+			return false;
+		}
+	}
+
+	public function stream_close() {
+		fclose($this->fileSource);
+	}
+
+	public function unlink($path) {
+		$this->setup();
+		$path = substr($path, strlen('oc://'));
+		return self::$rootView->unlink($path);
+	}
+
+	public function dir_opendir($path, $options) {
+		$this->setup();
+		$path = substr($path, strlen('oc://'));
+		$this->path = $path;
+		$this->dirSource = self::$rootView->opendir($path);
+		if (is_resource($this->dirSource)) {
+			$this->meta = stream_get_meta_data($this->dirSource);
+		}
+		return is_resource($this->dirSource);
+	}
+
+	public function dir_readdir() {
+		return readdir($this->dirSource);
+	}
+
+	public function dir_closedir() {
+		closedir($this->dirSource);
+	}
+
+	public function dir_rewinddir() {
+		rewinddir($this->dirSource);
+	}
+}

tests/lib/streamwrappers.php

@@ -75,4 +75,23 @@ class Test_StreamWrappers extends PHPUnit_Framework_TestCase {
 	public static function closeCallBack($path) {
 		throw new Exception($path);
 	}
+
+	public function testOC() {
+		\OC\Files\Mount::clear();
+		$storage = new \OC\Files\Storage\Temporary(array());
+		$storage->file_put_contents('foo.txt', 'asd');
+		new \OC\Files\Mount($storage, '/');
+
+		$this->assertTrue(file_exists('oc:///foo.txt'));
+		$this->assertEquals('asd', file_get_contents('oc:///foo.txt'));
+		$this->assertEquals(array('.', '..', 'foo.txt'), scandir('oc:///'));
+
+		file_put_contents('oc:///bar.txt', 'qwerty');
+		$this->assertEquals('qwerty', $storage->file_get_contents('bar.txt'));
+		$this->assertEquals(array('.', '..', 'bar.txt', 'foo.txt'), scandir('oc:///'));
+		$this->assertEquals('qwerty', file_get_contents('oc:///bar.txt'));
+
+		unlink('oc:///foo.txt');
+		$this->assertEquals(array('.', '..', 'bar.txt'), scandir('oc:///'));
+	}
 }