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PATH: home / lab2454c / vaultchip.com / vendor / guzzlehttp / psr7 / src

<?php

namespace GuzzleHttp\Psr7;

use Psr\Http\Message\StreamInterface;

/**
 * Uses PHP's zlib.inflate filter to inflate deflate or gzipped content.
 *
 * This stream decorator skips the first 10 bytes of the given stream to remove
 * the gzip header, converts the provided stream to a PHP stream resource,
 * then appends the zlib.inflate filter. The stream is then converted back
 * to a Guzzle stream resource to be used as a Guzzle stream.
 *
 * @link http://tools.ietf.org/html/rfc1952
 * @link http://php.net/manual/en/filters.compression.php
 *
 * @final
 */
class InflateStream implements StreamInterface
{
    use StreamDecoratorTrait;

public function __construct(StreamInterface $stream)
    {
        // read the first 10 bytes, ie. gzip header
        $header = $stream->read(10);
        $filenameHeaderLength = $this->getLengthOfPossibleFilenameHeader($stream, $header);
        // Skip the header, that is 10 + length of filename + 1 (nil) bytes
        $stream = new LimitStream($stream, -1, 10 + $filenameHeaderLength);
        $resource = StreamWrapper::getResource($stream);
        stream_filter_append($resource, 'zlib.inflate', STREAM_FILTER_READ);
        $this->stream = $stream->isSeekable() ? new Stream($resource) : new NoSeekStream(new Stream($resource));
    }

/**
     * @param StreamInterface $stream
     * @param $header
     *
     * @return int
     */
    private function getLengthOfPossibleFilenameHeader(StreamInterface $stream, $header)
    {
        $filename_header_length = 0;

if (substr(bin2hex($header), 6, 2) === '08') {
            // we have a filename, read until nil
            $filename_header_length = 1;
            while ($stream->read(1) !== chr(0)) {
                $filename_header_length++;
            }
        }

return $filename_header_length;
    }
}

[-] StreamWrapper.php [edit]
[-] Message.php [edit]
[-] StreamDecoratorTrait.php [edit]
[-] FnStream.php [edit]
[-] DroppingStream.php [edit]
[+] ..
[-] BufferStream.php [edit]
[-] Query.php [edit]
[-] MessageTrait.php [edit]
[-] Request.php [edit]
[-] UploadedFile.php [edit]
[-] NoSeekStream.php [edit]
[-] InflateStream.php [edit]
[-] Utils.php [edit]
[-] Header.php [edit]
[-] Stream.php [edit]
[-] MimeType.php [edit]
[-] functions_include.php [edit]
[-] CachingStream.php [edit]
[-] Rfc7230.php [edit]
[-] UriNormalizer.php [edit]
[-] AppendStream.php [edit]
[-] Uri.php [edit]
[-] LimitStream.php [edit]
[-] PumpStream.php [edit]
[-] functions.php [edit]
[-] UriResolver.php [edit]
[-] MultipartStream.php [edit]
[-] LazyOpenStream.php [edit]
[-] ServerRequest.php [edit]
[-] Response.php [edit]