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123 lines
2.8 KiB
PHP
123 lines
2.8 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 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 $name
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* @return array
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* @throws \Exception
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*/
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protected function loadContext($name) {
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$context = stream_context_get_options($this->context);
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if (isset($context[$name])) {
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$context = $context[$name];
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} else {
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throw new \BadMethodCallException('Invalid context, "' . $name . '" options not set');
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}
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if (isset($context['iterator']) and $context['iterator'] instanceof \Iterator) {
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$this->iterator = $context['iterator'];
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} else if (isset($context['array']) and is_array($context['array'])) {
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$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('dir');
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return true;
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}
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/**
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* @return string
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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 $source
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* @return resource
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*
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* @throws \BadMethodCallException
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*/
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public static function wrap($source) {
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if ($source instanceof \Iterator) {
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$context = stream_context_create(array(
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'dir' => array(
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'iterator' => $source)
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));
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} else if (is_array($source)) {
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$context = stream_context_create(array(
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'dir' => array(
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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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stream_wrapper_register('iterator', '\Icewind\Streams\IteratorDirectory');
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$wrapped = opendir('iterator://', $context);
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stream_wrapper_unregister('iterator');
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return $wrapped;
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}
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}
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