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Direktori : /proc/self/root/home2/selectio/www/limpiar.in.net/updates/vendor/mpdf/mpdf/src/Http/ |
Current File : //proc/self/root/home2/selectio/www/limpiar.in.net/updates/vendor/mpdf/mpdf/src/Http/Stream.php |
<?php namespace Mpdf\Http; /** * @link nyholm/psr7 */ class Stream implements \Psr\Http\Message\StreamInterface { /** * A resource reference. * * @var resource */ private $stream; /** * @var bool */ private $seekable; /** * @var bool */ private $readable; /** * @var bool */ private $writable; /** * @var array|mixed|null|void */ private $uri; /** * @var int */ private $size; /** @var array Hash of readable and writable stream types */ private static $readWriteHash = [ 'read' => [ 'r' => true, 'w+' => true, 'r+' => true, 'x+' => true, 'c+' => true, 'rb' => true, 'w+b' => true, 'r+b' => true, 'x+b' => true, 'c+b' => true, 'rt' => true, 'w+t' => true, 'r+t' => true, 'x+t' => true, 'c+t' => true, 'a+' => true, ], 'write' => [ 'w' => true, 'w+' => true, 'rw' => true, 'r+' => true, 'x+' => true, 'c+' => true, 'wb' => true, 'w+b' => true, 'r+b' => true, 'x+b' => true, 'c+b' => true, 'w+t' => true, 'r+t' => true, 'x+t' => true, 'c+t' => true, 'a' => true, 'a+' => true, ], ]; private function __construct() { } /** * @param resource $resource * * @return Stream */ public static function createFromResource($resource) { if (!is_resource($resource)) { throw new \InvalidArgumentException('Stream must be a resource'); } $obj = new self(); $obj->stream = $resource; $meta = stream_get_meta_data($obj->stream); $obj->seekable = $meta['seekable']; $obj->readable = isset(self::$readWriteHash['read'][$meta['mode']]); $obj->writable = isset(self::$readWriteHash['write'][$meta['mode']]); $obj->uri = $obj->getMetadata('uri'); return $obj; } /** * @param string $content * * @return Stream */ public static function create($content) { $resource = fopen('php://temp', 'rwb+'); $stream = self::createFromResource($resource); $stream->write($content); $stream->seek(0); return $stream; } /** * Closes the stream when the destructed. */ public function __destruct() { $this->close(); } public function __toString() { try { if ($this->isSeekable()) { $this->seek(0); } return $this->getContents(); } catch (\Exception $e) { return ''; } } public function close() { if (isset($this->stream)) { if (is_resource($this->stream)) { fclose($this->stream); } $this->detach(); } } public function detach() { if (!isset($this->stream)) { return; } $result = $this->stream; unset($this->stream); $this->size = $this->uri = null; $this->readable = $this->writable = $this->seekable = false; return $result; } public function getSize() { if ($this->size !== null) { return $this->size; } if (!isset($this->stream)) { return; } // Clear the stat cache if the stream has a URI if ($this->uri) { clearstatcache(true, $this->uri); } $stats = fstat($this->stream); if (isset($stats['size'])) { $this->size = $stats['size']; return $this->size; } } public function tell() { $result = ftell($this->stream); if ($result === false) { throw new \RuntimeException('Unable to determine stream position'); } return $result; } public function eof() { return !$this->stream || feof($this->stream); } public function isSeekable() { return $this->seekable; } public function seek($offset, $whence = SEEK_SET) { if (!$this->seekable) { throw new \RuntimeException('Stream is not seekable'); } if (fseek($this->stream, $offset, $whence) === -1) { throw new \RuntimeException('Unable to seek to stream position '.$offset.' with whence '.var_export($whence, true)); } } public function rewind() { $this->seek(0); } public function isWritable() { return $this->writable; } public function write($string) { if (!$this->writable) { throw new \RuntimeException('Cannot write to a non-writable stream'); } // We can't know the size after writing anything $this->size = null; $result = fwrite($this->stream, $string); if ($result === false) { throw new \RuntimeException('Unable to write to stream'); } return $result; } public function isReadable() { return $this->readable; } public function read($length) { if (!$this->readable) { throw new \RuntimeException('Cannot read from non-readable stream'); } return fread($this->stream, $length); } public function getContents() { if (!isset($this->stream)) { throw new \RuntimeException('Unable to read stream contents'); } $contents = stream_get_contents($this->stream); if ($contents === false) { throw new \RuntimeException('Unable to read stream contents'); } return $contents; } public function getMetadata($key = null) { if (!isset($this->stream)) { return $key ? null : []; } if ($key === null) { return stream_get_meta_data($this->stream); } $meta = stream_get_meta_data($this->stream); return isset($meta[$key]) ? $meta[$key] : null; } }