115 lines
2.5 KiB
PHP
115 lines
2.5 KiB
PHP
<?php
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/**
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* Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Licensed under the MIT license:
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* http://opensource.org/licenses/MIT
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*/
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namespace Icewind\Streams;
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/**
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* Base class for stream wrappers, wraps an existing stream
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*
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* This wrapper itself doesn't implement any functionality but is just a base class for other wrappers to extend
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*/
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abstract class Wrapper extends WrapperHandler implements File, Directory {
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/**
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* @var resource
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*/
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public $context;
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/**
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* The wrapped stream
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*
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* @var resource
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*/
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protected $source;
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/**
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* @param resource $source
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*/
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protected function setSourceStream($source) {
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$this->source = $source;
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}
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protected function loadContext($name = null) {
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$context = parent::loadContext($name);
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if (isset($context['source']) and is_resource($context['source'])) {
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$this->setSourceStream($context['source']);
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} else {
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throw new \BadMethodCallException('Invalid context, source not set');
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}
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return $context;
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}
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public function stream_seek($offset, $whence = SEEK_SET) {
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$result = fseek($this->source, $offset, $whence);
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return $result == 0 ? true : false;
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}
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public function stream_tell() {
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return ftell($this->source);
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}
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public function stream_read($count) {
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return fread($this->source, $count);
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}
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public function stream_write($data) {
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return fwrite($this->source, $data);
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}
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public function stream_set_option($option, $arg1, $arg2) {
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switch ($option) {
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case STREAM_OPTION_BLOCKING:
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return stream_set_blocking($this->source, (bool)$arg1);
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case STREAM_OPTION_READ_TIMEOUT:
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return stream_set_timeout($this->source, $arg1, $arg2);
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case STREAM_OPTION_WRITE_BUFFER:
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return stream_set_write_buffer($this->source, $arg1) === 0;
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}
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return false;
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}
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public function stream_truncate($size) {
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return ftruncate($this->source, $size);
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}
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public function stream_stat() {
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return fstat($this->source);
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}
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public function stream_lock($mode) {
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return flock($this->source, $mode);
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}
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public function stream_flush() {
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return fflush($this->source);
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}
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public function stream_eof() {
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return feof($this->source);
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}
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public function stream_close() {
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if (is_resource($this->source)
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return fclose($this->source);
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// Silently return true if source is not a resource
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return true;
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}
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public function dir_readdir() {
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return readdir($this->source);
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}
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public function dir_closedir() {
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closedir($this->source);
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return true;
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}
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public function dir_rewinddir() {
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return rewind($this->source);
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}
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}
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