114 lines
2.4 KiB
PHP
114 lines
2.4 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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* Create a directory handle from an iterator or array
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*
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* The following options should be passed in the context when opening the stream
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* [
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* 'dir' => [
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* 'array' => string[]
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* 'iterator' => \Iterator
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* ]
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* ]
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*
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* Either 'array' or 'iterator' need to be set, if both are set, 'iterator' takes preference
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*/
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class IteratorDirectory extends WrapperHandler implements 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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* @var \Iterator
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*/
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protected $iterator;
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/**
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* Load the source from the stream context and return the context options
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*
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* @param string $name
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* @return array
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* @throws \BadMethodCallException
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*/
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protected function loadContext($name = null) {
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$context = parent::loadContext($name);
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if (isset($context['iterator'])) {
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$this->iterator = $context['iterator'];
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} elseif (isset($context['array'])) {
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$this->iterator = new \ArrayIterator($context['array']);
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} else {
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throw new \BadMethodCallException('Invalid context, iterator or array not set');
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}
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return $context;
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}
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/**
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* @param string $path
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* @param array $options
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* @return bool
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*/
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public function dir_opendir($path, $options) {
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$this->loadContext();
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return true;
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}
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/**
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* @return string|bool
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*/
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public function dir_readdir() {
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if ($this->iterator->valid()) {
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$result = $this->iterator->current();
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$this->iterator->next();
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return $result;
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} else {
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return false;
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}
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}
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/**
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* @return bool
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*/
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public function dir_closedir() {
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return true;
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}
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/**
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* @return bool
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*/
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public function dir_rewinddir() {
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$this->iterator->rewind();
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return true;
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}
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/**
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* Creates a directory handle from the provided array or iterator
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*
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* @param \Iterator | array $source
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* @return resource|bool
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*
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* @throws \BadMethodCallException
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*/
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public static function wrap($source) {
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if ($source instanceof \Iterator) {
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$options = [
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'iterator' => $source
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];
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} elseif (is_array($source)) {
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$options = [
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'array' => $source
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];
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} else {
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throw new \BadMethodCallException('$source should be an Iterator or array');
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}
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return self::wrapSource(self::NO_SOURCE_DIR, $options);
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}
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}
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