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<?php
declare(strict_types=1);
namespace ZipStream\Test;
use Psr\Http\Message\StreamInterface;
use RuntimeException;
/**
* @internal
*/
class ResourceStream implements StreamInterface
{
public function __construct(
/**
* @var resource
*/
private $stream
) {
}
public function __toString(): string
{
if ($this->isSeekable()) {
$this->seek(0);
}
return (string) stream_get_contents($this->stream);
}
public function close(): void
{
$stream = $this->detach();
if ($stream) {
fclose($stream);
}
}
public function detach()
{
$result = $this->stream;
// According to the interface, the stream is left in an unusable state;
/** @psalm-suppress PossiblyNullPropertyAssignmentValue */
$this->stream = null;
return $result;
}
public function seek(int $offset, int $whence = SEEK_SET): void
{
if (!$this->isSeekable()) {
throw new RuntimeException();
}
if (fseek($this->stream, $offset, $whence) !== 0) {
// @codeCoverageIgnoreStart
throw new RuntimeException();
// @codeCoverageIgnoreEnd
}
}
public function isSeekable(): bool
{
return (bool)$this->getMetadata('seekable');
}
public function getMetadata(?string $key = null)
{
$metadata = stream_get_meta_data($this->stream);
return $key !== null ? @$metadata[$key] : $metadata;
}
public function getSize(): ?int
{
$stats = fstat($this->stream);
return $stats['size'];
}
public function tell(): int
{
$position = ftell($this->stream);
if ($position === false) {
// @codeCoverageIgnoreStart
throw new RuntimeException();
// @codeCoverageIgnoreEnd
}
return $position;
}
public function eof(): bool
{
return feof($this->stream);
}
public function rewind(): void
{
$this->seek(0);
}
public function write(string $string): int
{
if (!$this->isWritable()) {
throw new RuntimeException();
}
if (fwrite($this->stream, $string) === false) {
// @codeCoverageIgnoreStart
throw new RuntimeException();
// @codeCoverageIgnoreEnd
}
return strlen($string);
}
public function isWritable(): bool
{
$mode = $this->getMetadata('mode');
if (!is_string($mode)) {
// @codeCoverageIgnoreStart
throw new RuntimeException('Could not get stream mode from metadata!');
// @codeCoverageIgnoreEnd
}
return preg_match('/[waxc+]/', $mode) === 1;
}
public function read(int $length): string
{
if (!$this->isReadable()) {
throw new RuntimeException();
}
$result = fread($this->stream, $length);
if ($result === false) {
// @codeCoverageIgnoreStart
throw new RuntimeException();
// @codeCoverageIgnoreEnd
}
return $result;
}
public function isReadable(): bool
{
$mode = $this->getMetadata('mode');
if (!is_string($mode)) {
// @codeCoverageIgnoreStart
throw new RuntimeException('Could not get stream mode from metadata!');
// @codeCoverageIgnoreEnd
}
return preg_match('/[r+]/', $mode) === 1;
}
public function getContents(): string
{
if (!$this->isReadable()) {
throw new RuntimeException();
}
$result = stream_get_contents($this->stream);
if ($result === false) {
// @codeCoverageIgnoreStart
throw new RuntimeException();
// @codeCoverageIgnoreEnd
}
return $result;
}
}
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