AppendStream.php
3 years ago
BufferStream.php
3 years ago
CachingStream.php
3 years ago
DroppingStream.php
3 years ago
FnStream.php
3 years ago
Header.php
5 years ago
InflateStream.php
3 years ago
LazyOpenStream.php
3 years ago
LimitStream.php
3 years ago
Message.php
3 years ago
MessageTrait.php
2 years ago
MimeType.php
5 years ago
MultipartStream.php
3 years ago
NoSeekStream.php
3 years ago
PumpStream.php
3 years ago
Query.php
4 years ago
Request.php
3 years ago
Response.php
3 years ago
Rfc7230.php
4 years ago
ServerRequest.php
3 years ago
Stream.php
3 years ago
StreamDecoratorTrait.php
3 years ago
StreamWrapper.php
3 years ago
UploadedFile.php
3 years ago
Uri.php
3 years ago
UriComparator.php
2 years ago
UriNormalizer.php
3 years ago
UriResolver.php
3 years ago
Utils.php
3 years ago
functions.php
3 years ago
functions_include.php
5 years ago
InflateStream.php
57 lines
| 1 | <?php |
| 2 | |
| 3 | namespace AmeliaGuzzleHttp\Psr7; |
| 4 | |
| 5 | use AmeliaPsr\Http\Message\StreamInterface; |
| 6 | |
| 7 | /** |
| 8 | * Uses PHP's zlib.inflate filter to inflate deflate or gzipped content. |
| 9 | * |
| 10 | * This stream decorator skips the first 10 bytes of the given stream to remove |
| 11 | * the gzip header, converts the provided stream to a PHP stream resource, |
| 12 | * then appends the zlib.inflate filter. The stream is then converted back |
| 13 | * to a Guzzle stream resource to be used as a Guzzle stream. |
| 14 | * |
| 15 | * @link http://tools.ietf.org/html/rfc1952 |
| 16 | * @link http://php.net/manual/en/filters.compression.php |
| 17 | * |
| 18 | * @final |
| 19 | */ |
| 20 | class InflateStream implements StreamInterface |
| 21 | { |
| 22 | use StreamDecoratorTrait; |
| 23 | |
| 24 | public function __construct(StreamInterface $stream) |
| 25 | { |
| 26 | // read the first 10 bytes, ie. gzip header |
| 27 | $header = $stream->read(10); |
| 28 | $filenameHeaderLength = $this->getLengthOfPossibleFilenameHeader($stream, $header); |
| 29 | // Skip the header, that is 10 + length of filename + 1 (nil) bytes |
| 30 | $stream = new LimitStream($stream, -1, 10 + $filenameHeaderLength); |
| 31 | $resource = StreamWrapper::getResource($stream); |
| 32 | stream_filter_append($resource, 'zlib.inflate', STREAM_FILTER_READ); |
| 33 | $this->stream = $stream->isSeekable() ? new Stream($resource) : new NoSeekStream(new Stream($resource)); |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * @param StreamInterface $stream |
| 38 | * @param $header |
| 39 | * |
| 40 | * @return int |
| 41 | */ |
| 42 | private function getLengthOfPossibleFilenameHeader(StreamInterface $stream, $header) |
| 43 | { |
| 44 | $filename_header_length = 0; |
| 45 | |
| 46 | if (substr(bin2hex($header), 6, 2) === '08') { |
| 47 | // we have a filename, read until nil |
| 48 | $filename_header_length = 1; |
| 49 | while ($stream->read(1) !== chr(0)) { |
| 50 | $filename_header_length++; |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | return $filename_header_length; |
| 55 | } |
| 56 | } |
| 57 |