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443 lines
14 KiB
PHP
443 lines
14 KiB
PHP
<?php
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/**
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* eGroupWare API: VFS - old (until eGW 1.4 inclusive) VFS stream wrapper
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*
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* @link http://www.egroupware.org
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package api
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* @subpackage vfs
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* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @copyright (c) 2007 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @version $Id$
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*/
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require_once(EGW_API_INC.'/class.vfs_home.inc.php');
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require_once(EGW_API_INC.'/class.iface_stream_wrapper.inc.php');
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/**
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* eGroupWare API: VFS - old (until eGW 1.4 inclusive) VFS stream wrapper
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*
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* This class uses eGW's vfs_home class to access the vfs.
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*
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* The interface is according to the docu on php.net
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*
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* @link http://de.php.net/manual/de/function.stream-wrapper-register.php
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*/
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class oldvfs_stream_wrapper implements iface_stream_wrapper
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{
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/**
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* optional context param when opening the stream, null if no context passed
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*
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* @var mixed
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*/
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var $context;
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/**
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* Instance of the old vfs class
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*
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* @var vfs_home
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*/
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static protected $old_vfs;
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/**
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* Path off the file opened by stream_open
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*
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* @var string
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*/
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protected $opened_path;
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/**
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* Mode of the file opened by stream_open
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*
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* @var int
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*/
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protected $opened_mode;
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/**
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* Global vfs::ls() cache
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*
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* @var array
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*/
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static protected $cache=array();
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/**
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* Directory vfs::ls() of path opened with dir_opendir()
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*
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* @var string
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*/
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protected $opened_dir;
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/**
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* Constructor
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*
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* @return oldvfs_stream_wrapper
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*/
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function __construct()
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{
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error_log('oldvfs_stream_wrapper::__construct()');
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if (!is_object($this->old_vfs)) $this->old_vfs = new vfs_home();
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}
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/**
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* This method is called immediately after your stream object is created.
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*
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* @param string $path URL that was passed to fopen() and that this object is expected to retrieve
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* @param string $mode mode used to open the file, as detailed for fopen()
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* @param int $options additional flags set by the streams API (or'ed together):
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* - STREAM_USE_PATH If path is relative, search for the resource using the include_path.
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* - STREAM_REPORT_ERRORS If this flag is set, you are responsible for raising errors using trigger_error() during opening of the stream.
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* If this flag is not set, you should not raise any errors.
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* @param string $opened_path full path of the file/resource, if the open was successfull and STREAM_USE_PATH was set
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* @return boolean true if the ressource was opened successful, otherwise false
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*/
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function stream_open ( $path, $mode, $options, &$opened_path )
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{
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}
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/**
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* This method is called when the stream is closed, using fclose().
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*
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* You must release any resources that were locked or allocated by the stream.
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*/
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function stream_close ( )
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{
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}
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/**
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* This method is called in response to fread() and fgets() calls on the stream.
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*
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* You must return up-to count bytes of data from the current read/write position as a string.
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* If there are less than count bytes available, return as many as are available.
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* If no more data is available, return either FALSE or an empty string.
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* You must also update the read/write position of the stream by the number of bytes that were successfully read.
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*
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* @param int $count
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* @return string/false up to count bytes read or false on EOF
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*/
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function stream_read ( $count )
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{
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}
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/**
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* This method is called in response to fwrite() calls on the stream.
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*
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* You should store data into the underlying storage used by your stream.
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* If there is not enough room, try to store as many bytes as possible.
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* You should return the number of bytes that were successfully stored in the stream, or 0 if none could be stored.
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* You must also update the read/write position of the stream by the number of bytes that were successfully written.
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*
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* @param string $data
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* @return integer
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*/
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function stream_write ( $data )
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{
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}
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/**
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* This method is called in response to feof() calls on the stream.
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*
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* Important: PHP 5.0 introduced a bug that wasn't fixed until 5.1: the return value has to be the oposite!
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*
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* if(version_compare(PHP_VERSION,'5.0','>=') && version_compare(PHP_VERSION,'5.1','<'))
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* {
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* $eof = !$eof;
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* }
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*
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* @return boolean true if the read/write position is at the end of the stream and no more data availible, false otherwise
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*/
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function stream_eof ( )
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{
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}
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/**
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* This method is called in response to ftell() calls on the stream.
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*
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* @return integer current read/write position of the stream
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*/
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function stream_tell ( )
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{
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}
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/**
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* This method is called in response to fseek() calls on the stream.
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*
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* You should update the read/write position of the stream according to offset and whence.
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* See fseek() for more information about these parameters.
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*
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* @param integer $offset
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* @param integer $whence
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* @return boolean TRUE if the position was updated, FALSE otherwise.
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*/
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function stream_seek ( $offset, $whence )
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{
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}
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/**
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* This method is called in response to fflush() calls on the stream.
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*
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* If you have cached data in your stream but not yet stored it into the underlying storage, you should do so now.
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*
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* @return booelan TRUE if the cached data was successfully stored (or if there was no data to store), or FALSE if the data could not be stored.
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*/
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function stream_flush ( )
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{
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}
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/**
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* This method is called in response to fstat() calls on the stream.
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*
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* If you plan to use your wrapper in a require_once you need to define stream_stat().
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* If you plan to allow any other tests like is_file()/is_dir(), you have to define url_stat().
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* stream_stat() must define the size of the file, or it will never be included.
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* url_stat() must define mode, or is_file()/is_dir()/is_executable(), and any of those functions affected by clearstatcache() simply won't work.
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* It's not documented, but directories must be a mode like 040777 (octal), and files a mode like 0100666.
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* If you wish the file to be executable, use 7s instead of 6s.
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* The last 3 digits are exactly the same thing as what you pass to chmod.
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* 040000 defines a directory, and 0100000 defines a file.
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*
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* @return array containing the same values as appropriate for the stream.
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*/
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function stream_stat ( )
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{
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}
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/**
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* This method is called in response to unlink() calls on URL paths associated with the wrapper.
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*
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* It should attempt to delete the item specified by path.
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* In order for the appropriate error message to be returned, do not define this method if your wrapper does not support unlinking!
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*
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* @param string $path
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* @return boolean TRUE on success or FALSE on failure
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*/
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function unlink ( $path )
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{
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}
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/**
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* This method is called in response to rename() calls on URL paths associated with the wrapper.
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*
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* It should attempt to rename the item specified by path_from to the specification given by path_to.
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* In order for the appropriate error message to be returned, do not define this method if your wrapper does not support renaming.
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*
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* @param string $path_from
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* @param string $path_to
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* @return boolean TRUE on success or FALSE on failure
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*/
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function rename ( $path_from, $path_to )
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{
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}
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/**
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* This method is called in response to mkdir() calls on URL paths associated with the wrapper.
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*
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* It should attempt to create the directory specified by path.
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* In order for the appropriate error message to be returned, do not define this method if your wrapper does not support creating directories.
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*
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* @param string $path
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* @param int $mode
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* @param int $options Posible values include STREAM_REPORT_ERRORS and STREAM_MKDIR_RECURSIVE
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* @return boolean TRUE on success or FALSE on failure
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*/
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function mkdir ( $path, $mode, $options )
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{
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}
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/**
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* This method is called in response to rmdir() calls on URL paths associated with the wrapper.
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*
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* It should attempt to remove the directory specified by path.
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* In order for the appropriate error message to be returned, do not define this method if your wrapper does not support removing directories.
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*
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* @param string $path
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* @param int $options Possible values include STREAM_REPORT_ERRORS.
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* @return boolean TRUE on success or FALSE on failure.
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*/
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function rmdir ( $path, $options )
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{
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}
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/**
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* This method is called immediately when your stream object is created for examining directory contents with opendir().
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*
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* @param string $path URL that was passed to opendir() and that this object is expected to explore.
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* @return booelan
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*/
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function dir_opendir ( $url, $options )
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{
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error_log("oldvfs_stream_wrapper::dir_opendir('$path',$options)");
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if (!is_object($GLOBALS['egw']->vfs))
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{
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$GLOBALS['egw']->vfs =& new vfs_home();
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}
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$path = parse_url($url,PHP_URL_PATH);
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$this->opened_dir = $GLOBALS['egw']->vfs->ls(array(
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'string' => $path,
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'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
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'checksubdirs' => false,
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'nofiles' => false,
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//'orderby' => '',
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//'mime_type' => '',
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));
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if (!is_array($this->opened_dir))
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{
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$this->opened_dir = null;
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return false;
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}
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//print_r($this->opened_dir);
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reset($this->opened_dir);
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return true;
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}
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/**
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* This method is called in response to stat() calls on the URL paths associated with the wrapper.
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*
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* It should return as many elements in common with the system function as possible.
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* Unknown or unavailable values should be set to a rational value (usually 0).
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*
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* If you plan to use your wrapper in a require_once you need to define stream_stat().
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* If you plan to allow any other tests like is_file()/is_dir(), you have to define url_stat().
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* stream_stat() must define the size of the file, or it will never be included.
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* url_stat() must define mode, or is_file()/is_dir()/is_executable(), and any of those functions affected by clearstatcache() simply won't work.
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* It's not documented, but directories must be a mode like 040777 (octal), and files a mode like 0100666.
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* If you wish the file to be executable, use 7s instead of 6s.
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* The last 3 digits are exactly the same thing as what you pass to chmod.
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* 040000 defines a directory, and 0100000 defines a file.
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*
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* @param string $path
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* @param int $flags holds additional flags set by the streams API. It can hold one or more of the following values OR'd together:
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* - STREAM_URL_STAT_LINK For resources with the ability to link to other resource (such as an HTTP Location: forward,
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* or a filesystem symlink). This flag specified that only information about the link itself should be returned,
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* not the resource pointed to by the link.
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* This flag is set in response to calls to lstat(), is_link(), or filetype().
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* - STREAM_URL_STAT_QUIET If this flag is set, your wrapper should not raise any errors. If this flag is not set,
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* you are responsible for reporting errors using the trigger_error() function during stating of the path.
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* @return array
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*/
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function url_stat ( $url, $flags )
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{
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error_log("oldvfs_stream_wrapper::url_stat('$url',$flags)");
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/*return array(
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'mode' => 0100666,
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'name' => basename(parse_url($path,PHP_URL_PATH)),
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'size' => strlen(basename(parse_url($path,PHP_URL_PATH))),
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'nlink' => 1,
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'uid' => 1000,
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'gid' => 100,
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'mtime' => time(),
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);*/
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if (!is_object($GLOBALS['egw']->vfs))
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{
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$GLOBALS['egw']->vfs =& new vfs_home();
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}
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$path = parse_url($url,PHP_URL_PATH);
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list($info) = $GLOBALS['egw']->vfs->ls(array(
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'string' => $path,
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'relatives' => array(RELATIVE_ROOT), // filename is relative to the vfs-root
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'checksubdirs' => false,
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'nofiles' => true,
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//'orderby' => '',
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//'mime_type' => '',
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));
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//print_r($info);
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return $info ? $this->vfsinfo2stat($info) : false;
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}
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/**
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* This method is called in response to readdir().
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*
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* It should return a string representing the next filename in the location opened by dir_opendir().
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*
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* @return string
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*/
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function dir_readdir ( )
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{
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error_log("oldvfs_stream_wrapper::dir_readdir($this->opened_dir_path)");
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if (!is_array($this->opened_dir)) return false;
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$file = current($this->opened_dir); next($this->opened_dir);
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return $file ? $file['name'] : false;
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}
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/**
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* This method is called in response to rewinddir().
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*
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* It should reset the output generated by dir_readdir(). i.e.:
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* The next call to dir_readdir() should return the first entry in the location returned by dir_opendir().
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*
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* @return boolean
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*/
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function dir_rewinddir ( )
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{
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error_log("oldvfs_stream_wrapper::dir_rewinddir($this->opened_dir_path)");
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if (!is_array($this->opened_dir)) return false;
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reset($this->opened_dir);
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return true;
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}
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/**
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* This method is called in response to closedir().
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*
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* You should release any resources which were locked or allocated during the opening and use of the directory stream.
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*
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* @return boolean
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*/
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function dir_closedir ( )
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{
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error_log("oldvfs_stream_wrapper::dir_closedir($this->opened_dir_path)");
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if (!is_array($this->opened_dir)) return false;
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$this->opened_dir = $this->opened_dir_path = null;
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return true;
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}
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/**
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* Convert a vfs-file-info into a stat array
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*
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* @param array $info
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* @return array
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*/
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function vfsinfo2stat($info)
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{
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$stat = array(
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'ino' => $info['file_id'],
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'name' => $info['name'],
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'mode' => $info['mime_type'] == 'Directory' ? 040700 : 0100600,
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'size' => $info['size'],
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'uid' => $info['owner_id'] > 0 ? $info['owner_id'] : 0,
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'gid' => $info['owner_id'] < 0 ? $info['owner_id'] : 0,
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'mtime' => strtotime($info['modified'] ? $info['modified'] : $info['created']),
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'ctime' => strtotime($info['created']),
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'nlink' => $info['mime_type'] == 'Directory' ? 2 : 1,
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);
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//print_r($stat);
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return $stat;
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}
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}
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stream_register_wrapper('oldvfs','oldvfs_stream_wrapper');
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