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101 lines
2.5 KiB
PHP
101 lines
2.5 KiB
PHP
<?php
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/*
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* This file is part of the Imagine package.
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*
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* (c) Bulat Shakirzyanov <mallluhuct@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Imagine\Image\Metadata;
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use Imagine\Exception\InvalidArgumentException;
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abstract class AbstractMetadataReader implements MetadataReaderInterface
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{
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/**
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* {@inheritdoc}
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*/
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public function readFile($file)
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{
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if (stream_is_local($file)) {
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if (!is_file($file)) {
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throw new InvalidArgumentException(sprintf('File %s does not exist.', $file));
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}
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return new MetadataBag(array_merge(array('filepath' => realpath($file), 'uri' => $file), $this->extractFromFile($file)));
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}
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return new MetadataBag(array_merge(array('uri' => $file), $this->extractFromFile($file)));
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}
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/**
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* {@inheritdoc}
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*/
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public function readData($data)
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{
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return new MetadataBag($this->extractFromData($data));
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}
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/**
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* {@inheritdoc}
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*/
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public function readStream($resource)
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{
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if (!is_resource($resource)) {
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throw new InvalidArgumentException('Invalid resource provided.');
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}
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return new MetadataBag(array_merge($this->getStreamMetadata($resource), $this->extractFromStream($resource)));
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}
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/**
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* Gets the URI from a stream resource
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*
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* @param resource $resource
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*
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* @return string|null The URI f ava
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*/
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private function getStreamMetadata($resource)
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{
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$metadata = array();
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if (false !== $data = @stream_get_meta_data($resource)) {
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$metadata['uri'] = $data['uri'];
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if (stream_is_local($resource)) {
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$metadata['filepath'] = realpath($data['uri']);
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}
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}
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return $metadata;
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}
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/**
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* Extracts metadata from a file
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*
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* @param $file
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*
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* @return array An associative array of metadata
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*/
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abstract protected function extractFromFile($file);
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/**
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* Extracts metadata from raw data
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*
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* @param $data
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*
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* @return array An associative array of metadata
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*/
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abstract protected function extractFromData($data);
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/**
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* Extracts metadata from a stream
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*
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* @param $resource
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*
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* @return array An associative array of metadata
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*/
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abstract protected function extractFromStream($resource);
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}
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