Файл: vkolhoze.com/vendor/guzzle/guzzle/src/Guzzle/Stream/Stream.php
Строк: 187
<?php
namespace GuzzleStream;
use GuzzleCommonExceptionInvalidArgumentException;
/**
* PHP stream implementation
*/
class Stream implements StreamInterface
{
const STREAM_TYPE = 'stream_type';
const WRAPPER_TYPE = 'wrapper_type';
const IS_LOCAL = 'is_local';
const IS_READABLE = 'is_readable';
const IS_WRITABLE = 'is_writable';
const SEEKABLE = 'seekable';
/** @var resource Stream resource */
protected $stream;
/** @var int Size of the stream contents in bytes */
protected $size;
/** @var array Stream cached data */
protected $cache = array();
/** @var array Custom stream data */
protected $customData = array();
/** @var array Hash table of readable and writeable stream types for fast lookups */
protected static $readWriteHash = array(
'read' => array(
'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' => array(
'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
)
);
/**
* @param resource $stream Stream resource to wrap
* @param int $size Size of the stream in bytes. Only pass if the size cannot be obtained from the stream.
*
* @throws InvalidArgumentException if the stream is not a stream resource
*/
public function __construct($stream, $size = null)
{
$this->setStream($stream, $size);
}
/**
* Closes the stream when the helper is destructed
*/
public function __destruct()
{
$this->close();
}
public function __toString()
{
if (!$this->isReadable() || (!$this->isSeekable() && $this->isConsumed())) {
return '';
}
$originalPos = $this->ftell();
$body = stream_get_contents($this->stream, -1, 0);
$this->seek($originalPos);
return $body;
}
public function close()
{
if (is_resource($this->stream)) {
fclose($this->stream);
}
$this->cache[self::IS_READABLE] = false;
$this->cache[self::IS_WRITABLE] = false;
}
/**
* Calculate a hash of a Stream
*
* @param StreamInterface $stream Stream to calculate the hash for
* @param string $algo Hash algorithm (e.g. md5, crc32, etc)
* @param bool $rawOutput Whether or not to use raw output
*
* @return bool|string Returns false on failure or a hash string on success
*/
public static function getHash(StreamInterface $stream, $algo, $rawOutput = false)
{
$pos = $stream->ftell();
if (!$stream->seek(0)) {
return false;
}
$ctx = hash_init($algo);
while (!$stream->feof()) {
hash_update($ctx, $stream->read(8192));
}
$out = hash_final($ctx, (bool) $rawOutput);
$stream->seek($pos);
return $out;
}
public function getMetaData($key = null)
{
$meta = stream_get_meta_data($this->stream);
return !$key ? $meta : (array_key_exists($key, $meta) ? $meta[$key] : null);
}
public function getStream()
{
return $this->stream;
}
public function setStream($stream, $size = null)
{
if (!is_resource($stream)) {
throw new InvalidArgumentException('Stream must be a resource');
}
$this->size = $size;
$this->stream = $stream;
$this->rebuildCache();
return $this;
}
public function detachStream()
{
$this->stream = null;
return $this;
}
public function getWrapper()
{
return $this->cache[self::WRAPPER_TYPE];
}
public function getWrapperData()
{
return $this->getMetaData('wrapper_data') ?: array();
}
public function getStreamType()
{
return $this->cache[self::STREAM_TYPE];
}
public function getUri()
{
return $this->cache['uri'];
}
public function getSize()
{
if ($this->size !== null) {
return $this->size;
}
// If the stream is a file based stream and local, then use fstat
clearstatcache(true, $this->cache['uri']);
$stats = fstat($this->stream);
if (isset($stats['size'])) {
$this->size = $stats['size'];
return $this->size;
} elseif ($this->cache[self::IS_READABLE] && $this->cache[self::SEEKABLE]) {
// Only get the size based on the content if the the stream is readable and seekable
$pos = $this->ftell();
$this->size = strlen((string) $this);
$this->seek($pos);
return $this->size;
}
return false;
}
public function isReadable()
{
return $this->cache[self::IS_READABLE];
}
public function isRepeatable()
{
return $this->cache[self::IS_READABLE] && $this->cache[self::SEEKABLE];
}
public function isWritable()
{
return $this->cache[self::IS_WRITABLE];
}
public function isConsumed()
{
return feof($this->stream);
}
public function feof()
{
return $this->isConsumed();
}
public function isLocal()
{
return $this->cache[self::IS_LOCAL];
}
public function isSeekable()
{
return $this->cache[self::SEEKABLE];
}
public function setSize($size)
{
$this->size = $size;
return $this;
}
public function seek($offset, $whence = SEEK_SET)
{
return $this->cache[self::SEEKABLE] ? fseek($this->stream, $offset, $whence) === 0 : false;
}
public function read($length)
{
return fread($this->stream, $length);
}
public function write($string)
{
// We can't know the size after writing anything
$this->size = null;
return fwrite($this->stream, $string);
}
public function ftell()
{
return ftell($this->stream);
}
public function rewind()
{
return $this->seek(0);
}
public function readLine($maxLength = null)
{
if (!$this->cache[self::IS_READABLE]) {
return false;
} else {
return $maxLength ? fgets($this->getStream(), $maxLength) : fgets($this->getStream());
}
}
public function setCustomData($key, $value)
{
$this->customData[$key] = $value;
return $this;
}
public function getCustomData($key)
{
return isset($this->customData[$key]) ? $this->customData[$key] : null;
}
/**
* Reprocess stream metadata
*/
protected function rebuildCache()
{
$this->cache = stream_get_meta_data($this->stream);
$this->cache[self::IS_LOCAL] = stream_is_local($this->stream);
$this->cache[self::IS_READABLE] = isset(self::$readWriteHash['read'][$this->cache['mode']]);
$this->cache[self::IS_WRITABLE] = isset(self::$readWriteHash['write'][$this->cache['mode']]);
}
}