51      * @param StreamInterface $stream Stream to read
56     public static function copyToString(StreamInterface $stream, $maxLen = -1)  argument
61             while (!$stream->eof()) {
62                 $buf = $stream->read(1048576);
72         while (!$stream->eof() && $len < $maxLen) {
73             $buf = $stream->read($maxLen - $len);
124      * @param StreamInterface $stream    Stream to calculate the hash for
132         StreamInterface $stream,  argument
136         $pos = $stream->tell();
138         if ($pos > 0 && !$stream->seek(0)) {
139             throw new SeekException($stream);
143         while (!$stream->eof()) {
144             hash_update($ctx, $stream->read(1048576));
148         $stream->seek($pos);
156      * @param StreamInterface $stream    Stream to read from
162     public static function readline(StreamInterface $stream, $maxLength = null, $eol = PHP_EOL)  argument
168         while (!$stream->eof()) {
169             if (false === ($byte = $stream->read(1))) {