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Media: Support Stream Wrappers In WP_Image_Editor_Imagick
Since `WP_Image_Editor`'s introduction, stream wrappers have functioned in `WP_Image_Editor_GD`, but haven't been properly supported in `WP_Image_Editor_Imagick`. - Detects stream wrappers and uses `file_put_contents()` along with `Imagick::read/getImageBlob()` for handling when necessary. - Introduces private method, `WP_Image_Editor_Imagick::write_image` to handle detection and proper saving. - Introduces `WP_Test_Stream` class for testing stream wrappers, along with new tests for Imagick's stream handling and a stream filename test. Adds requirement for `Imagick::readImageBlob()`, available in Imagick >= 2.0.0, which aligns with the current requirement of Imagick >= 2.2.0. Props p00ya, calin, joemcgill, pputzer, jimyaghi, mikeschroder. Fixes #42663. git-svn-id: https://develop.svn.wordpress.org/trunk@49230 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Mike Schroder
248
tests/phpunit/includes/class-wp-test-stream.php
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248
tests/phpunit/includes/class-wp-test-stream.php
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<?php
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/**
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* Class WP_Test_Stream.
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*
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* An in-memory streamWrapper implementation for testing streams. Writes to a
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* stream URL like "protocol://bucket/foo" will be stored in the static
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* variable WP_Test_Stream::$data['bucket']['/foo'].
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*
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* Creating a directory at "protocol://bucket/foo" will store the string
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* 'DIRECTORY' to the static variable WP_Test_Stream::$data['bucket']['/foo/']
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* (note the trailing slash).
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*
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* This class can be used to test that code works with basic read/write streams,
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* as such, operations such as seeking are not supported.
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*
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* This class does not register itself as a stream handler: test fixtures
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* should make the appropriate call to stream_wrapper_register().
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*/
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class WP_Test_Stream {
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const FILE_MODE = 0100666;
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const DIRECTORY_MODE = 040777;
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/**
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* In-memory storage for files and directories simulated by this wrapper.
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*/
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static $data = array();
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var $position;
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var $file;
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var $bucket;
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var $data_ref;
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/**
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* Initializes internal state for reading the given URL.
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*
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* @param string $url A URL of the form "protocol://bucket/path".
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*/
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private function open( $url ) {
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$components = array_merge(
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array(
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'host' => '',
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'path' => '',
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),
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parse_url( $url )
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);
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$this->bucket = $components['host'];
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$this->file = $components['path'] ? $components['path'] : '/';
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if ( empty( $this->bucket ) ) {
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trigger_error( 'Cannot use an empty bucket name', E_USER_ERROR );
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}
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if ( ! isset( WP_Test_Stream::$data[ $this->bucket ] ) ) {
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WP_Test_Stream::$data[ $this->bucket ] = array();
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}
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$this->data_ref =& WP_Test_Stream::$data[ $this->bucket ][ $this->file ];
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$this->position = 0;
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}
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/**
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* Opens a URL.
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*
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* @see streamWrapper::stream_open
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*/
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function stream_open( $path, $mode, $options, &$opened_path ) {
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$this->open( $path );
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return true;
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}
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/**
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* Reads from a stream.
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*
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* @see streamWrapper::stream_read
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*/
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function stream_read( $count ) {
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if ( ! isset( $this->data_ref ) ) {
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return '';
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}
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$ret = substr( $this->data_ref, $this->position, $count );
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$this->position += strlen( $ret );
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return $ret;
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}
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/**
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* Writes to a stream.
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*
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* @see streamWrapper::stream_write
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*/
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function stream_write( $data ) {
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if ( ! isset( $this->data_ref ) ) {
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$this->data_ref = '';
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}
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$left = substr( $this->data_ref, 0, $this->position );
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$right = substr( $this->data_ref, $this->position + strlen( $data ) );
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WP_Test_Stream::$data[ $this->bucket ][ $this->file ] = $left . $data . $right;
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$this->position += strlen( $data );
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return strlen( $data );
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}
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/**
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* Retrieves the current position of a stream.
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*
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* @see streamWrapper::stream_tell
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*/
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function stream_tell() {
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return $this->position;
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}
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/**
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* Tests for end-of-file.
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*
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* @see streamWrapper::stream_eof
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*/
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function stream_eof() {
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if ( ! isset( $this->data_ref ) ) {
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return true;
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}
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return $this->position >= strlen( $this->data_ref );
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}
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/**
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* Change stream metadata.
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*
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* @see streamWrapper::stream_metadata
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*/
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function stream_metadata( $path, $option, $var ) {
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$this->open( $path );
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if ( STREAM_META_TOUCH === $option ) {
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if ( ! isset( $this->data_ref ) ) {
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$this->data_ref = '';
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}
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return true;
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}
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return false;
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}
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/**
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* Creates a directory.
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*
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* @see streamWrapper::mkdir
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*/
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function mkdir( $path, $mode, $options ) {
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$this->open( $path );
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$plainfile = rtrim( $this->file, '/' );
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if ( isset( WP_Test_Stream::$data[ $this->bucket ][ $file ] ) ) {
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return false;
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}
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$dir_ref = & $this->get_directory_ref();
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$dir_ref = 'DIRECTORY';
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return true;
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}
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/**
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* Creates a file metadata object, with defaults.
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*
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* @param array $stats Partial file metadata.
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* @return array Complete file metadata.
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*/
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private function make_stat( $stats ) {
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$defaults = array(
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'dev' => 0,
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'ino' => 0,
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'mode' => 0,
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'nlink' => 0,
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'uid' => 0,
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'gid' => 0,
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'rdev' => 0,
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'size' => 0,
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'atime' => 0,
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'mtime' => 0,
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'ctime' => 0,
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'blksize' => 0,
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'blocks' => 0,
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);
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return array_merge( $defaults, $stats );
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}
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/**
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* Retrieves information about a file.
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*
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* @see streamWrapper::stream_stat
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*/
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public function stream_stat() {
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$dir_ref = & $this->get_directory_ref();
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if ( substr( $this->file, -1 ) === '/' || isset( $dir_ref ) ) {
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return $this->make_stat(
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array(
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'mode' => WP_Test_Stream::DIRECTORY_MODE,
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)
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);
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}
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if ( ! isset( $this->data_ref ) ) {
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return false;
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}
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return $this->make_stat(
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array(
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'size' => strlen( $this->data_ref ),
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'mode' => WP_Test_Stream::FILE_MODE,
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)
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);
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}
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/**
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* Retrieves information about a file.
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*
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* @see streamWrapper::url_stat
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*/
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public function url_stat( $path, $flags ) {
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$this->open( $path );
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return $this->stream_stat();
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}
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/**
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* Deletes a file.
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*
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* @see streamWrapper::unlink
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*/
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public function unlink( $path ) {
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if ( ! isset( $this->data_ref ) ) {
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return false;
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}
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unset( WP_Test_Stream::$data[ $this->bucket ][ $this->file ] );
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return true;
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}
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/**
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* Interprets this stream's path as a directory, and returns the entry.
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*
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* @return A reference to the data entry for the directory.
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*/
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private function &get_directory_ref() {
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return WP_Test_Stream::$data[ $this->bucket ][ rtrim( $this->file, '/' ) . '/' ];
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}
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}
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