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Direktori : /home2/selectio/www/3-idiots/vendor/intervention/image/src/Intervention/Image/ |
Current File : /home2/selectio/www/3-idiots/vendor/intervention/image/src/Intervention/Image/AbstractDecoder.php |
<?php namespace Intervention\Image; use GuzzleHttp\Psr7\Stream; use Intervention\Image\Exception\NotReadableException; use Psr\Http\Message\StreamInterface; abstract class AbstractDecoder { /** * Initiates new image from path in filesystem * * @param string $path * @return \Intervention\Image\Image */ abstract public function initFromPath($path); /** * Initiates new image from binary data * * @param string $data * @return \Intervention\Image\Image */ abstract public function initFromBinary($data); /** * Initiates new image from GD resource * * @param Resource $resource * @return \Intervention\Image\Image */ abstract public function initFromGdResource($resource); /** * Initiates new image from Imagick object * * @param \Imagick $object * @return \Intervention\Image\Image */ abstract public function initFromImagick(\Imagick $object); /** * Buffer of input data * * @var mixed */ private $data; /** * Creates new Decoder with data * * @param mixed $data */ public function __construct($data = null) { $this->data = $data; } /** * Init from given URL * * @param string $url * @return \Intervention\Image\Image */ public function initFromUrl($url) { $options = [ 'http' => [ 'method'=>"GET", 'protocol_version'=>1.1, // force use HTTP 1.1 for service mesh environment with envoy 'header'=>"Accept-language: en\r\n". "User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36\r\n" ] ]; $context = stream_context_create($options); if ($data = @file_get_contents($url, false, $context)) { return $this->initFromBinary($data); } throw new NotReadableException( "Unable to init from given url (".$url.")." ); } /** * Init from given stream * * @param StreamInterface|resource $stream * @return \Intervention\Image\Image */ public function initFromStream($stream) { if (!$stream instanceof StreamInterface) { $stream = new Stream($stream); } try { $offset = $stream->tell(); } catch (\RuntimeException $e) { $offset = 0; } $shouldAndCanSeek = $offset !== 0 && $stream->isSeekable(); if ($shouldAndCanSeek) { $stream->rewind(); } try { $data = $stream->getContents(); } catch (\RuntimeException $e) { $data = null; } if ($shouldAndCanSeek) { $stream->seek($offset); } if ($data) { return $this->initFromBinary($data); } throw new NotReadableException( "Unable to init from given stream" ); } /** * Determines if current source data is GD resource * * @return boolean */ public function isGdResource() { if (is_resource($this->data)) { return (get_resource_type($this->data) == 'gd'); } if ($this->data instanceof \GdImage) { return true; } return false; } /** * Determines if current source data is Imagick object * * @return boolean */ public function isImagick() { return is_a($this->data, 'Imagick'); } /** * Determines if current source data is Intervention\Image\Image object * * @return boolean */ public function isInterventionImage() { return is_a($this->data, '\Intervention\Image\Image'); } /** * Determines if current data is SplFileInfo object * * @return boolean */ public function isSplFileInfo() { return is_a($this->data, 'SplFileInfo'); } /** * Determines if current data is Symfony UploadedFile component * * @return boolean */ public function isSymfonyUpload() { return is_a($this->data, 'Symfony\Component\HttpFoundation\File\UploadedFile'); } /** * Determines if current source data is file path * * @return boolean */ public function isFilePath() { if (is_string($this->data)) { try { return is_file($this->data); } catch (\Exception $e) { return false; } } return false; } /** * Determines if current source data is url * * @return boolean */ public function isUrl() { return (bool) filter_var($this->data, FILTER_VALIDATE_URL); } /** * Determines if current source data is a stream resource * * @return boolean */ public function isStream() { if ($this->data instanceof StreamInterface) return true; if (!is_resource($this->data)) return false; if (get_resource_type($this->data) !== 'stream') return false; return true; } /** * Determines if current source data is binary data * * @return boolean */ public function isBinary() { if (is_string($this->data)) { $mime = finfo_buffer(finfo_open(FILEINFO_MIME_TYPE), $this->data); return (substr($mime, 0, 4) != 'text' && $mime != 'application/x-empty'); } return false; } /** * Determines if current source data is data-url * * @return boolean */ public function isDataUrl() { $data = $this->decodeDataUrl($this->data); return is_null($data) ? false : true; } /** * Determines if current source data is base64 encoded * * @return boolean */ public function isBase64() { if (!is_string($this->data)) { return false; } return base64_encode(base64_decode($this->data)) === str_replace(["\n", "\r"], '', $this->data); } /** * Initiates new Image from Intervention\Image\Image * * @param Image $object * @return \Intervention\Image\Image */ public function initFromInterventionImage($object) { return $object; } /** * Parses and decodes binary image data from data-url * * @param string $data_url * @return string */ private function decodeDataUrl($data_url) { if (!is_string($data_url)) { return null; } $pattern = "/^data:(?:image\/[a-zA-Z\-\.]+)(?:charset=\".+\")?;base64,(?P<data>.+)$/"; preg_match($pattern, str_replace(["\n", "\r"], '', $data_url), $matches); if (is_array($matches) && array_key_exists('data', $matches)) { return base64_decode($matches['data']); } return null; } /** * Initiates new image from mixed data * * @param mixed $data * @return \Intervention\Image\Image */ public function init($data) { $this->data = $data; switch (true) { case $this->isGdResource(): return $this->initFromGdResource($this->data); case $this->isImagick(): return $this->initFromImagick($this->data); case $this->isInterventionImage(): return $this->initFromInterventionImage($this->data); case $this->isSplFileInfo(): return $this->initFromPath($this->data->getRealPath()); case $this->isBinary(): return $this->initFromBinary($this->data); case $this->isUrl(): return $this->initFromUrl($this->data); case $this->isStream(): return $this->initFromStream($this->data); case $this->isDataUrl(): return $this->initFromBinary($this->decodeDataUrl($this->data)); case $this->isFilePath(): return $this->initFromPath($this->data); // isBase64 has to be after isFilePath to prevent false positives case $this->isBase64(): return $this->initFromBinary(base64_decode($this->data)); default: throw new NotReadableException("Image source not readable"); } } /** * Decoder object transforms to string source data * * @return string */ public function __toString() { return (string) $this->data; } }