MAJ Librarys
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17 changed files with 347 additions and 194 deletions
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@ -60,9 +60,12 @@ class CachingStream implements StreamInterface
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$diff = $byte - $this->stream->getSize();
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if ($diff > 0) {
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// If the seek byte is greater the number of read bytes, then read
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// the difference of bytes to cache the bytes and inherently seek.
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$this->read($diff);
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// Read the remoteStream until we have read in at least the amount
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// of bytes requested, or we reach the end of the file.
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while ($diff > 0 && !$this->remoteStream->eof()) {
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$this->read($diff);
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$diff = $byte - $this->stream->getSize();
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}
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} else {
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// We can just do a normal seek since we've already seen this byte.
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$this->stream->seek($byte);
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@ -20,10 +20,33 @@ class InflateStream implements StreamInterface
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public function __construct(StreamInterface $stream)
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{
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// Skip the first 10 bytes
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$stream = new LimitStream($stream, -1, 10);
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// read the first 10 bytes, ie. gzip header
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$header = $stream->read(10);
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$filenameHeaderLength = $this->getLengthOfPossibleFilenameHeader($stream, $header);
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// Skip the header, that is 10 + length of filename + 1 (nil) bytes
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$stream = new LimitStream($stream, -1, 10 + $filenameHeaderLength);
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$resource = StreamWrapper::getResource($stream);
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stream_filter_append($resource, 'zlib.inflate', STREAM_FILTER_READ);
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$this->stream = new Stream($resource);
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}
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/**
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* @param StreamInterface $stream
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* @param $header
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* @return int
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*/
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private function getLengthOfPossibleFilenameHeader(StreamInterface $stream, $header)
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{
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$filename_header_length = 0;
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if (substr(bin2hex($header), 6, 2) === '08') {
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// we have a filename, read until nil
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$filename_header_length = 1;
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while ($stream->read(1) !== chr(0)) {
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$filename_header_length++;
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}
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}
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return $filename_header_length;
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}
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}
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