/library/Zend/Service/WindowsAzure/Storage/Blob/Stream.php
PHP | 568 lines | 282 code | 69 blank | 217 comment | 31 complexity | ad4276d10993a8ffbc3d594b1567a12f MD5 | raw file
- <?php
- /**
- * Zend Framework
- *
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.txt.
- * It is also available through the world-wide-web at this URL:
- * http://framework.zend.com/license/new-bsd
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to license@zend.com so we can send you a copy immediately.
- *
- * @category Zend
- * @package Zend_Service_WindowsAzure_Storage
- * @subpackage Blob
- * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://todo name_todo
- * @version $Id: Stream.php 24593 2012-01-05 20:35:02Z matthew $
- */
- /**
- * @category Zend
- * @package Zend_Service_WindowsAzure_Storage
- * @subpackage Blob
- * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- class Zend_Service_WindowsAzure_Storage_Blob_Stream
- {
- /**
- * Current file name
- *
- * @var string
- */
- protected $_fileName = null;
- /**
- * Temporary file name
- *
- * @var string
- */
- protected $_temporaryFileName = null;
- /**
- * Temporary file handle
- *
- * @var resource
- */
- protected $_temporaryFileHandle = null;
- /**
- * Blob storage client
- *
- * @var Zend_Service_WindowsAzure_Storage_Blob
- */
- protected $_storageClient = null;
- /**
- * Write mode?
- *
- * @var boolean
- */
- protected $_writeMode = false;
- /**
- * List of blobs
- *
- * @var array
- */
- protected $_blobs = null;
- /**
- * Retrieve storage client for this stream type
- *
- * @param string $path
- *
- * @return Zend_Service_WindowsAzure_Storage_Blob
- */
- protected function _getStorageClient ($path = '')
- {
- if (is_null($this->_storageClient)) {
- $url = explode(':', $path);
- if (!$url) {
- throw new Zend_Service_WindowsAzure_Exception( 'Could not parse path "' . $path . '".' );
- }
- $this->_storageClient = Zend_Service_WindowsAzure_Storage_Blob::getWrapperClient($url[0]);
- if (!$this->_storageClient) {
- throw new Zend_Service_WindowsAzure_Exception( 'No storage client registered for stream type "' . $url[0] . '://".' );
- }
- }
- return $this->_storageClient;
- }
- /**
- * Extract container name
- *
- * @param string $path
- *
- * @return string
- */
- protected function _getContainerName ($path)
- {
- $url = parse_url($path);
- if ($url['host']) {
- return $url['host'];
- }
- return '';
- }
- /**
- * Extract file name
- *
- * @param string $path
- *
- * @return string
- */
- protected function _getFileName ($path)
- {
- $url = parse_url($path);
- if ($url['host']) {
- $fileName = isset( $url['path'] ) ? $url['path'] : $url['host'];
- if (strpos($fileName, '/') === 0) {
- $fileName = substr($fileName, 1);
- }
- return $fileName;
- }
- return '';
- }
- /**
- * Open the stream
- *
- * @param string $path
- * @param string $mode
- * @param integer $options
- * @param string $opened_path
- *
- * @return boolean
- */
- public function stream_open ($path, $mode, $options, &$opened_path)
- {
- $this->_fileName = $path;
- $this->_temporaryFileName = tempnam(sys_get_temp_dir(), 'azure');
- // Check the file can be opened
- $fh = @fopen($this->_temporaryFileName, $mode);
- if ($fh === false) {
- return false;
- }
- fclose($fh);
- // Write mode?
- if (strpbrk($mode, 'wax+')) {
- $this->_writeMode = true;
- } else {
- $this->_writeMode = false;
- }
- // If read/append, fetch the file
- if (!$this->_writeMode || strpbrk($mode, 'ra+')) {
- $this->_getStorageClient($this->_fileName)->getBlob(
- $this->_getContainerName($this->_fileName),
- $this->_getFileName($this->_fileName),
- $this->_temporaryFileName
- );
- }
- // Open temporary file handle
- $this->_temporaryFileHandle = fopen($this->_temporaryFileName, $mode);
- // Ok!
- return true;
- }
- /**
- * Close the stream
- *
- * @return void
- */
- public function stream_close ()
- {
- @fclose($this->_temporaryFileHandle);
- // Upload the file?
- if ($this->_writeMode) {
- // Make sure the container exists
- $containerExists = $this->_getStorageClient($this->_fileName)->containerExists(
- $this->_getContainerName($this->_fileName)
- );
- if (!$containerExists) {
- $this->_getStorageClient($this->_fileName)->createContainer(
- $this->_getContainerName($this->_fileName)
- );
- }
- // Upload the file
- try {
- $this->_getStorageClient($this->_fileName)->putBlob(
- $this->_getContainerName($this->_fileName),
- $this->_getFileName($this->_fileName),
- $this->_temporaryFileName
- );
- } catch (Zend_Service_WindowsAzure_Exception $ex) {
- @unlink($this->_temporaryFileName);
- unset( $this->_storageClient );
- throw $ex;
- }
- }
- @unlink($this->_temporaryFileName);
- unset( $this->_storageClient );
- }
- /**
- * Read from the stream
- *
- * @param integer $count
- *
- * @return string
- */
- public function stream_read ($count)
- {
- if (!$this->_temporaryFileHandle) {
- return false;
- }
- return fread($this->_temporaryFileHandle, $count);
- }
- /**
- * Write to the stream
- *
- * @param string $data
- *
- * @return integer
- */
- public function stream_write ($data)
- {
- if (!$this->_temporaryFileHandle) {
- return 0;
- }
- $len = strlen($data);
- fwrite($this->_temporaryFileHandle, $data, $len);
- return $len;
- }
- /**
- * End of the stream?
- *
- * @return boolean
- */
- public function stream_eof ()
- {
- if (!$this->_temporaryFileHandle) {
- return true;
- }
- return feof($this->_temporaryFileHandle);
- }
- /**
- * What is the current read/write position of the stream?
- *
- * @return integer
- */
- public function stream_tell ()
- {
- return ftell($this->_temporaryFileHandle);
- }
- /**
- * Update the read/write position of the stream
- *
- * @param integer $offset
- * @param integer $whence
- *
- * @return boolean
- */
- public function stream_seek ($offset, $whence)
- {
- if (!$this->_temporaryFileHandle) {
- return false;
- }
- return ( fseek($this->_temporaryFileHandle, $offset, $whence) === 0 );
- }
- /**
- * Flush current cached stream data to storage
- *
- * @return boolean
- */
- public function stream_flush ()
- {
- $result = fflush($this->_temporaryFileHandle);
- // Upload the file?
- if ($this->_writeMode) {
- // Make sure the container exists
- $containerExists = $this->_getStorageClient($this->_fileName)->containerExists(
- $this->_getContainerName($this->_fileName)
- );
- if (!$containerExists) {
- $this->_getStorageClient($this->_fileName)->createContainer(
- $this->_getContainerName($this->_fileName)
- );
- }
- // Upload the file
- try {
- $this->_getStorageClient($this->_fileName)->putBlob(
- $this->_getContainerName($this->_fileName),
- $this->_getFileName($this->_fileName),
- $this->_temporaryFileName
- );
- } catch (Zend_Service_WindowsAzure_Exception $ex) {
- @unlink($this->_temporaryFileName);
- unset( $this->_storageClient );
- throw $ex;
- }
- }
- return $result;
- }
- /**
- * Returns data array of stream variables
- *
- * @return array
- */
- public function stream_stat ()
- {
- if (!$this->_temporaryFileHandle) {
- return false;
- }
- return $this->url_stat($this->_fileName, 0);
- }
- /**
- * Attempt to delete the item
- *
- * @param string $path
- *
- * @return boolean
- */
- public function unlink ($path)
- {
- $this->_getStorageClient($path)->deleteBlob(
- $this->_getContainerName($path),
- $this->_getFileName($path)
- );
- // Clear the stat cache for this path.
- clearstatcache(true, $path);
- return true;
- }
- /**
- * Attempt to rename the item
- *
- * @param string $path_from
- * @param string $path_to
- *
- * @return boolean False
- */
- public function rename ($path_from, $path_to)
- {
- if ($this->_getContainerName($path_from) != $this->_getContainerName($path_to)) {
- throw new Zend_Service_WindowsAzure_Exception( 'Container name can not be changed.' );
- }
- if ($this->_getFileName($path_from) == $this->_getContainerName($path_to)) {
- return true;
- }
- $this->_getStorageClient($path_from)->copyBlob(
- $this->_getContainerName($path_from),
- $this->_getFileName($path_from),
- $this->_getContainerName($path_to),
- $this->_getFileName($path_to)
- );
- $this->_getStorageClient($path_from)->deleteBlob(
- $this->_getContainerName($path_from),
- $this->_getFileName($path_from)
- );
- // Clear the stat cache for the affected paths.
- clearstatcache(true, $path_from);
- clearstatcache(true, $path_to);
- return true;
- }
- /**
- * Return array of URL variables
- *
- * @param string $path
- * @param integer $flags
- *
- * @return array
- */
- public function url_stat ($path, $flags)
- {
- $stat = array();
- $stat['dev'] = 0;
- $stat['ino'] = 0;
- $stat['mode'] = 0;
- $stat['nlink'] = 0;
- $stat['uid'] = 0;
- $stat['gid'] = 0;
- $stat['rdev'] = 0;
- $stat['size'] = 0;
- $stat['atime'] = 0;
- $stat['mtime'] = 0;
- $stat['ctime'] = 0;
- $stat['blksize'] = 0;
- $stat['blocks'] = 0;
- $info = null;
- try {
- $info = $this->_getStorageClient($path)->getBlobInstance(
- $this->_getContainerName($path),
- $this->_getFileName($path)
- );
- $stat['size'] = $info->Size;
- // Set the modification time and last modified to the Last-Modified header.
- $lastmodified = strtotime($info->LastModified);
- $stat['mtime'] = $lastmodified;
- $stat['ctime'] = $lastmodified;
- // Entry is a regular file.
- $stat['mode'] = 0100000;
- return array_values($stat) + $stat;
- } catch (Zend_Service_WindowsAzure_Exception $ex) {
- // Unexisting file...
- return false;
- }
- }
- /**
- * Create a new directory
- *
- * @param string $path
- * @param integer $mode
- * @param integer $options
- *
- * @return boolean
- */
- public function mkdir ($path, $mode, $options)
- {
- if ($this->_getContainerName($path) == $this->_getFileName($path)) {
- // Create container
- try {
- $this->_getStorageClient($path)->createContainer(
- $this->_getContainerName($path)
- );
- return true;
- } catch (Zend_Service_WindowsAzure_Exception $ex) {
- return false;
- }
- } else {
- throw new Zend_Service_WindowsAzure_Exception( 'mkdir() with multiple levels is not supported on Windows Azure Blob Storage.' );
- }
- }
- /**
- * Remove a directory
- *
- * @param string $path
- * @param integer $options
- *
- * @return boolean
- */
- public function rmdir ($path, $options)
- {
- if ($this->_getContainerName($path) == $this->_getFileName($path)) {
- // Clear the stat cache so that affected paths are refreshed.
- clearstatcache();
- // Delete container
- try {
- $this->_getStorageClient($path)->deleteContainer(
- $this->_getContainerName($path)
- );
- return true;
- } catch (Zend_Service_WindowsAzure_Exception $ex) {
- return false;
- }
- } else {
- throw new Zend_Service_WindowsAzure_Exception( 'rmdir() with multiple levels is not supported on Windows Azure Blob Storage.' );
- }
- }
- /**
- * Attempt to open a directory
- *
- * @param string $path
- * @param integer $options
- *
- * @return boolean
- */
- public function dir_opendir ($path, $options)
- {
- $this->_blobs = $this->_getStorageClient($path)->listBlobs(
- $this->_getContainerName($path)
- );
- return is_array($this->_blobs);
- }
- /**
- * Return the next filename in the directory
- *
- * @return string
- */
- public function dir_readdir ()
- {
- $object = current($this->_blobs);
- if ($object !== false) {
- next($this->_blobs);
- return $object->Name;
- }
- return false;
- }
- /**
- * Reset the directory pointer
- *
- * @return boolean True
- */
- public function dir_rewinddir ()
- {
- reset($this->_blobs);
- return true;
- }
- /**
- * Close a directory
- *
- * @return boolean True
- */
- public function dir_closedir ()
- {
- $this->_blobs = null;
- return true;
- }
- }