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Edit File : Stream.php \| Size : 7.20 KB
<?php declare(strict_types=1); namespace GuzzleHttp\Psr7; use Psr\Http\Message\StreamInterface; /** * PHP stream implementation. / class Stream implements StreamInterface { /* * @see http://php.net/manual/function.fopen.php * @see http://php.net/manual/en/function.gzopen.php / private const READABLE_MODES = '/r\|a\+\|ab\+\|w\+\|wb\+\|x\+\|xb\+\|c\+\|cb\+/'; private const WRITABLE_MODES = '/a\|w\|r\+\|rb\+\|rw\|x\|c/'; /* @var resource / private $stream; /* @var int\|null / private $size; /* @var bool / private $seekable; /* @var bool / private $readable; /* @var bool / private $writable; /* @var string\|null / private $uri; /* @var mixed[] / private $customMetadata; /* * This constructor accepts an associative array of options. * * - size: (int) If a read stream would otherwise have an indeterminate * size, but the size is known due to foreknowledge, then you can * provide that size, in bytes. * - metadata: (array) Any additional metadata to return when the metadata * of the stream is accessed. * * @param resource $stream Stream resource to wrap. * @param array{size?: int, metadata?: array} $options Associative array of options. * * @throws \InvalidArgumentException if the stream is not a stream resource / public function __construct($stream, array $options = []) { if (!is_resource($stream)) { throw new \InvalidArgumentException('Stream must be a resource'); } if (isset($options['size'])) { $this->size = $options['size']; } $this->customMetadata = $options['metadata'] ?? []; $this->stream = $stream; $meta = stream_get_meta_data($this->stream); $this->seekable = $meta['seekable']; $this->readable = (bool) preg_match(self::READABLE_MODES, $meta['mode']); $this->writable = (bool) preg_match(self::WRITABLE_MODES, $meta['mode']); $this->uri = $this->getMetadata('uri'); } /* * Closes the stream when the destructed / public function __destruct() { $this->close(); } public function __toString(): string { try { if ($this->isSeekable()) { $this->seek(0); } return $this->getContents(); } catch (\Throwable $e) { if (\PHP_VERSION_ID >= 70400) { throw $e; } trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR); return ''; } } public function getContents(): string { if (!isset($this->stream)) { throw new \RuntimeException('Stream is detached'); } if (!$this->readable) { throw new \RuntimeException('Cannot read from non-readable stream'); } return Utils::tryGetContents($this->stream); } public function close(): void { if (isset($this->stream)) { if (is_resource($this->stream)) { fclose($this->stream); } $this->detach(); } } public function detach() { if (!isset($this->stream)) { return null; } $result = $this->stream; unset($this->stream); $this->size = $this->uri = null; $this->readable = $this->writable = $this->seekable = false; return $result; } public function getSize(): ?int { if ($this->size !== null) { return $this->size; } if (!isset($this->stream)) { return null; } // Clear the stat cache if the stream has a URI if ($this->uri) { clearstatcache(true, $this->uri); } $stats = fstat($this->stream); if (is_array($stats) && isset($stats['size'])) { $this->size = $stats['size']; return $this->size; } return null; } public function isReadable(): bool { return $this->readable; } public function isWritable(): bool { return $this->writable; } public function isSeekable(): bool { return $this->seekable; } public function eof(): bool { if (!isset($this->stream)) { throw new \RuntimeException('Stream is detached'); } return feof($this->stream); } public function tell(): int { if (!isset($this->stream)) { throw new \RuntimeException('Stream is detached'); } $result = ftell($this->stream); if ($result === false) { throw new \RuntimeException('Unable to determine stream position'); } return $result; } public function rewind(): void { $this->seek(0); } public function seek($offset, $whence = SEEK_SET): void { $whence = (int) $whence; if (!isset($this->stream)) { throw new \RuntimeException('Stream is detached'); } if (!$this->seekable) { throw new \RuntimeException('Stream is not seekable'); } if (fseek($this->stream, $offset, $whence) === -1) { throw new \RuntimeException('Unable to seek to stream position ' .$offset.' with whence '.var_export($whence, true)); } } public function read($length): string { if (!isset($this->stream)) { throw new \RuntimeException('Stream is detached'); } if (!$this->readable) { throw new \RuntimeException('Cannot read from non-readable stream'); } if ($length < 0) { throw new \RuntimeException('Length parameter cannot be negative'); } if (0 === $length) { return ''; } try { $string = fread($this->stream, $length); } catch (\Exception $e) { throw new \RuntimeException('Unable to read from stream', 0, $e); } if (false === $string) { throw new \RuntimeException('Unable to read from stream'); } return $string; } public function write($string): int { if (!isset($this->stream)) { throw new \RuntimeException('Stream is detached'); } if (!$this->writable) { throw new \RuntimeException('Cannot write to a non-writable stream'); } // We can't know the size after writing anything $this->size = null; $result = fwrite($this->stream, $string); if ($result === false) { throw new \RuntimeException('Unable to write to stream'); } return $result; } /* * @return mixed */ public function getMetadata($key = null) { if (!isset($this->stream)) { return $key ? null : []; } elseif (!$key) { return $this->customMetadata + stream_get_meta_data($this->stream); } elseif (isset($this->customMetadata[$key])) { return $this->customMetadata[$key]; } $meta = stream_get_meta_data($this->stream); return $meta[$key] ?? null; } } Back

Edit File : Stream.php | Size : 7.20 KB

<?php

declare(strict_types=1);

namespace GuzzleHttp\Psr7;

use Psr\Http\Message\StreamInterface;

/**
 * PHP stream implementation.
 */
class Stream implements StreamInterface
{
    /**
     * @see http://php.net/manual/function.fopen.php
     * @see http://php.net/manual/en/function.gzopen.php
     */
    private const READABLE_MODES = '/r|a\+|ab\+|w\+|wb\+|x\+|xb\+|c\+|cb\+/';
    private const WRITABLE_MODES = '/a|w|r\+|rb\+|rw|x|c/';

/** @var resource */
    private $stream;
    /** @var int|null */
    private $size;
    /** @var bool */
    private $seekable;
    /** @var bool */
    private $readable;
    /** @var bool */
    private $writable;
    /** @var string|null */
    private $uri;
    /** @var mixed[] */
    private $customMetadata;

/**
     * This constructor accepts an associative array of options.
     *
     * - size: (int) If a read stream would otherwise have an indeterminate
     *   size, but the size is known due to foreknowledge, then you can
     *   provide that size, in bytes.
     * - metadata: (array) Any additional metadata to return when the metadata
     *   of the stream is accessed.
     *
     * @param resource                            $stream  Stream resource to wrap.
     * @param array{size?: int, metadata?: array} $options Associative array of options.
     *
     * @throws \InvalidArgumentException if the stream is not a stream resource
     */
    public function __construct($stream, array $options = [])
    {
        if (!is_resource($stream)) {
            throw new \InvalidArgumentException('Stream must be a resource');
        }

if (isset($options['size'])) {
            $this->size = $options['size'];
        }

$this->customMetadata = $options['metadata'] ?? [];
        $this->stream = $stream;
        $meta = stream_get_meta_data($this->stream);
        $this->seekable = $meta['seekable'];
        $this->readable = (bool) preg_match(self::READABLE_MODES, $meta['mode']);
        $this->writable = (bool) preg_match(self::WRITABLE_MODES, $meta['mode']);
        $this->uri = $this->getMetadata('uri');
    }

/**
     * Closes the stream when the destructed
     */
    public function __destruct()
    {
        $this->close();
    }

public function __toString(): string
    {
        try {
            if ($this->isSeekable()) {
                $this->seek(0);
            }

return $this->getContents();
        } catch (\Throwable $e) {
            if (\PHP_VERSION_ID >= 70400) {
                throw $e;
            }
            trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);

return '';
        }
    }

public function getContents(): string
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }

if (!$this->readable) {
            throw new \RuntimeException('Cannot read from non-readable stream');
        }

return Utils::tryGetContents($this->stream);
    }

public function close(): void
    {
        if (isset($this->stream)) {
            if (is_resource($this->stream)) {
                fclose($this->stream);
            }
            $this->detach();
        }
    }

public function detach()
    {
        if (!isset($this->stream)) {
            return null;
        }

$result = $this->stream;
        unset($this->stream);
        $this->size = $this->uri = null;
        $this->readable = $this->writable = $this->seekable = false;

return $result;
    }

public function getSize(): ?int
    {
        if ($this->size !== null) {
            return $this->size;
        }

if (!isset($this->stream)) {
            return null;
        }

// Clear the stat cache if the stream has a URI
        if ($this->uri) {
            clearstatcache(true, $this->uri);
        }

$stats = fstat($this->stream);
        if (is_array($stats) && isset($stats['size'])) {
            $this->size = $stats['size'];

return $this->size;
        }

return null;
    }

public function isReadable(): bool
    {
        return $this->readable;
    }

public function isWritable(): bool
    {
        return $this->writable;
    }

public function isSeekable(): bool
    {
        return $this->seekable;
    }

public function eof(): bool
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }

return feof($this->stream);
    }

public function tell(): int
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }

$result = ftell($this->stream);

if ($result === false) {
            throw new \RuntimeException('Unable to determine stream position');
        }

return $result;
    }

public function rewind(): void
    {
        $this->seek(0);
    }

public function seek($offset, $whence = SEEK_SET): void
    {
        $whence = (int) $whence;

if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }
        if (!$this->seekable) {
            throw new \RuntimeException('Stream is not seekable');
        }
        if (fseek($this->stream, $offset, $whence) === -1) {
            throw new \RuntimeException('Unable to seek to stream position '
                .$offset.' with whence '.var_export($whence, true));
        }
    }

public function read($length): string
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }
        if (!$this->readable) {
            throw new \RuntimeException('Cannot read from non-readable stream');
        }
        if ($length < 0) {
            throw new \RuntimeException('Length parameter cannot be negative');
        }

if (0 === $length) {
            return '';
        }

try {
            $string = fread($this->stream, $length);
        } catch (\Exception $e) {
            throw new \RuntimeException('Unable to read from stream', 0, $e);
        }

if (false === $string) {
            throw new \RuntimeException('Unable to read from stream');
        }

return $string;
    }

public function write($string): int
    {
        if (!isset($this->stream)) {
            throw new \RuntimeException('Stream is detached');
        }
        if (!$this->writable) {
            throw new \RuntimeException('Cannot write to a non-writable stream');
        }

// We can't know the size after writing anything
        $this->size = null;
        $result = fwrite($this->stream, $string);

if ($result === false) {
            throw new \RuntimeException('Unable to write to stream');
        }

return $result;
    }

/**
     * @return mixed
     */
    public function getMetadata($key = null)
    {
        if (!isset($this->stream)) {
            return $key ? null : [];
        } elseif (!$key) {
            return $this->customMetadata + stream_get_meta_data($this->stream);
        } elseif (isset($this->customMetadata[$key])) {
            return $this->customMetadata[$key];
        }

$meta = stream_get_meta_data($this->stream);

return $meta[$key] ?? null;
    }
}

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