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<?php |
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/** |
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* Reader which uses exiftool to read EXIF data |
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* |
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* @category PHPExif |
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* @copyright Copyright (c) 2016 Tom Van Herreweghe <[email protected]> |
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* @license http://github.com/PHPExif/php-exif-exiftool/blob/master/LICENSE MIT License |
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* @link http://github.com/PHPExif/php-exif-exiftool for the canonical source repository |
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* @package Exiftool |
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*/ |
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namespace PHPExif\Adapter\Exiftool; |
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use PHPExif\Common\Adapter\MapperInterface; |
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use PHPExif\Common\Adapter\ReaderInterface; |
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use PHPExif\Common\Data\Exif; |
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use PHPExif\Common\Data\Iptc; |
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use PHPExif\Common\Data\Metadata; |
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use PHPExif\Common\Exception\Reader\NoExifDataException; |
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use \RuntimeException; |
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/** |
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* Reader |
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* |
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* Reads EXIF data |
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* |
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* @category PHPExif |
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* @package Exiftool |
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*/ |
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final class Reader implements ReaderInterface |
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{ |
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const PATH = 'path'; |
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const BIN = 'binary'; |
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const NUMERIC = 'numeric'; |
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/** |
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* @var MapperInterface |
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*/ |
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private $mapper; |
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/** |
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* @var string |
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*/ |
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private $binary; |
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/** |
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* @var bool |
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*/ |
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private $numeric; |
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/** |
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* @var string |
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*/ |
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private $path; |
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/** |
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* @param MapperInterface $mapper |
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*/ |
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public function __construct( |
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MapperInterface $mapper, |
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array $config = [] |
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) { |
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$defaults = [ |
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self::BIN => 'exiftool', |
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self::PATH => '/usr/bin/env', |
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self::NUMERIC => true, |
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]; |
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$config = array_replace($defaults, $config); |
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$this->binary = $config[self::BIN]; |
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$this->path = $config[self::PATH]; |
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$this->numeric = $config[self::NUMERIC]; |
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$this->mapper = $mapper; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getMapper() |
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{ |
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return $this->mapper; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getMetadataFromFile($filePath) |
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{ |
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$result = $this->getCliOutput( |
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sprintf( |
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'%1$s%3$s -j -a -G1 -c %4$s %2$s', |
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$this->path, |
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escapeshellarg($filePath), |
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$this->numeric ? ' -n' : '', |
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escapeshellarg('%d deg %d\' %.4f"') |
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) |
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); |
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if (false === $result) { |
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throw NoExifDataException::fromFile($filePath); |
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} |
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$data = json_decode($result, true)[0]; |
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$data = $this->normalizeArrayKeys($data); |
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// map the data: |
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$mapper = $this->getMapper(); |
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$metadata = new Metadata( |
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new Exif, |
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new Iptc |
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); |
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$mapper->map($data, $metadata); |
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return $metadata; |
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} |
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/** |
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* Lowercases the keys for given array |
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* |
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* @param array $data |
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* |
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* @return array |
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*/ |
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private function normalizeArrayKeys(array $data) |
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{ |
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$keys = array_keys($data); |
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$keys = array_map('strtolower', $keys); |
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$values = array_values($data); |
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$values = array_map(function ($value) { |
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if (!is_array($value)) { |
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return $value; |
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} |
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return $this->normalizeArrayKeys($value); |
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}, $values); |
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return array_combine( |
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$keys, |
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$values |
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); |
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} |
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/** |
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* Returns the output from given cli command |
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* |
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* @param string $command |
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* |
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* @return string|boolean |
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*/ |
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protected function getCliOutput($command) |
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{ |
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$descriptorspec = array( |
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0 => array('pipe', 'r'), |
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1 => array('pipe', 'w'), |
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2 => array('pipe', 'a') |
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); |
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$process = proc_open($command, $descriptorspec, $pipes); |
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if (!is_resource($process)) { |
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return false; |
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} |
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$result = stream_get_contents($pipes[1]); |
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fclose($pipes[0]); |
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fclose($pipes[1]); |
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fclose($pipes[2]); |
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proc_close($process); |
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return $result; |
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} |
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} |
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PHPExif /
php-exif-exiftool
