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Diffstat (limited to '')
-rw-r--r-- | vendor/guzzlehttp/psr7/src/PumpStream.php | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/vendor/guzzlehttp/psr7/src/PumpStream.php b/vendor/guzzlehttp/psr7/src/PumpStream.php new file mode 100644 index 0000000..154782a --- /dev/null +++ b/vendor/guzzlehttp/psr7/src/PumpStream.php @@ -0,0 +1,170 @@ +<?php
+
+namespace GuzzleHttp\Psr7;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Provides a read only stream that pumps data from a PHP callable.
+ *
+ * When invoking the provided callable, the PumpStream will pass the amount of
+ * data requested to read to the callable. The callable can choose to ignore
+ * this value and return fewer or more bytes than requested. Any extra data
+ * returned by the provided callable is buffered internally until drained using
+ * the read() function of the PumpStream. The provided callable MUST return
+ * false when there is no more data to read.
+ *
+ * @final
+ */
+class PumpStream implements StreamInterface
+{
+ /** @var callable */
+ private $source;
+
+ /** @var int */
+ private $size;
+
+ /** @var int */
+ private $tellPos = 0;
+
+ /** @var array */
+ private $metadata;
+
+ /** @var BufferStream */
+ private $buffer;
+
+ /**
+ * @param callable $source Source of the stream data. The callable MAY
+ * accept an integer argument used to control the
+ * amount of data to return. The callable MUST
+ * return a string when called, or false on error
+ * or EOF.
+ * @param array $options Stream options:
+ * - metadata: Hash of metadata to use with stream.
+ * - size: Size of the stream, if known.
+ */
+ public function __construct(callable $source, array $options = [])
+ {
+ $this->source = $source;
+ $this->size = isset($options['size']) ? $options['size'] : null;
+ $this->metadata = isset($options['metadata']) ? $options['metadata'] : [];
+ $this->buffer = new BufferStream();
+ }
+
+ public function __toString()
+ {
+ try {
+ return Utils::copyToString($this);
+ } catch (\Exception $e) {
+ return '';
+ }
+ }
+
+ public function close()
+ {
+ $this->detach();
+ }
+
+ public function detach()
+ {
+ $this->tellPos = false;
+ $this->source = null;
+
+ return null;
+ }
+
+ public function getSize()
+ {
+ return $this->size;
+ }
+
+ public function tell()
+ {
+ return $this->tellPos;
+ }
+
+ public function eof()
+ {
+ return !$this->source;
+ }
+
+ public function isSeekable()
+ {
+ return false;
+ }
+
+ public function rewind()
+ {
+ $this->seek(0);
+ }
+
+ public function seek($offset, $whence = SEEK_SET)
+ {
+ throw new \RuntimeException('Cannot seek a PumpStream');
+ }
+
+ public function isWritable()
+ {
+ return false;
+ }
+
+ public function write($string)
+ {
+ throw new \RuntimeException('Cannot write to a PumpStream');
+ }
+
+ public function isReadable()
+ {
+ return true;
+ }
+
+ public function read($length)
+ {
+ $data = $this->buffer->read($length);
+ $readLen = strlen($data);
+ $this->tellPos += $readLen;
+ $remaining = $length - $readLen;
+
+ if ($remaining) {
+ $this->pump($remaining);
+ $data .= $this->buffer->read($remaining);
+ $this->tellPos += strlen($data) - $readLen;
+ }
+
+ return $data;
+ }
+
+ public function getContents()
+ {
+ $result = '';
+ while (!$this->eof()) {
+ $result .= $this->read(1000000);
+ }
+
+ return $result;
+ }
+
+ public function getMetadata($key = null)
+ {
+ if (!$key) {
+ return $this->metadata;
+ }
+
+ return isset($this->metadata[$key]) ? $this->metadata[$key] : null;
+ }
+
+ private function pump($length)
+ {
+ if ($this->source) {
+ do {
+ $data = call_user_func($this->source, $length);
+ if ($data === false || $data === null) {
+ $this->source = null;
+ return;
+ }
+ $this->buffer->write($data);
+ $length -= strlen($data);
+ } while ($length > 0);
+ }
+ }
+}
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