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File Content: `Message.php`

<?php

declare(strict_types=1);

namespace GuzzleHttp\Psr7;

use Psr\Http\Message\MessageInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\ResponseInterface;

final class Message
{
    /**
     * Returns the string representation of an HTTP message.
     *
     * @param MessageInterface $message Message to convert to a string.
     */
    public static function toString(MessageInterface $message): string
    {
        if ($message instanceof RequestInterface) {
            $msg = trim($message->getMethod() . ' '
                    . $message->getRequestTarget())
                . ' HTTP/' . $message->getProtocolVersion();
            if (!$message->hasHeader('host')) {
                $msg .= "\r\nHost: " . $message->getUri()->getHost();
            }
        } elseif ($message instanceof ResponseInterface) {
            $msg = 'HTTP/' . $message->getProtocolVersion() . ' '
                . $message->getStatusCode() . ' '
                . $message->getReasonPhrase();
        } else {
            throw new \InvalidArgumentException('Unknown message type');
        }

        foreach ($message->getHeaders() as $name => $values) {
            if (strtolower($name) === 'set-cookie') {
                foreach ($values as $value) {
                    $msg .= "\r\n{$name}: " . $value;
                }
            } else {
                $msg .= "\r\n{$name}: " . implode(', ', $values);
            }
        }

        return "{$msg}\r\n\r\n" . $message->getBody();
    }

    /**
     * Get a short summary of the message body.
     *
     * Will return `null` if the response is not printable.
     *
     * @param MessageInterface $message    The message to get the body summary
     * @param int              $truncateAt The maximum allowed size of the summary
     */
    public static function bodySummary(MessageInterface $message, int $truncateAt = 120): ?string
    {
        $body = $message->getBody();

        if (!$body->isSeekable() || !$body->isReadable()) {
            return null;
        }

        $size = $body->getSize();

        if ($size === 0) {
            return null;
        }

        $summary = $body->read($truncateAt);
        $body->rewind();

        if ($size > $truncateAt) {
            $summary .= ' (truncated...)';
        }

        // Matches any printable character, including unicode characters:
        // letters, marks, numbers, punctuation, spacing, and separators.
        if (preg_match('/[^\pL\pM\pN\pP\pS\pZ\n\r\t]/u', $summary)) {
            return null;
        }

        return $summary;
    }

    /**
     * Attempts to rewind a message body and throws an exception on failure.
     *
     * The body of the message will only be rewound if a call to `tell()`
     * returns a value other than `0`.
     *
     * @param MessageInterface $message Message to rewind
     *
     * @throws \RuntimeException
     */
    public static function rewindBody(MessageInterface $message): void
    {
        $body = $message->getBody();

        if ($body->tell()) {
            $body->rewind();
        }
    }

    /**
     * Parses an HTTP message into an associative array.
     *
     * The array contains the "start-line" key containing the start line of
     * the message, "headers" key containing an associative array of header
     * array values, and a "body" key containing the body of the message.
     *
     * @param string $message HTTP request or response to parse.
     */
    public static function parseMessage(string $message): array
    {
        if (!$message) {
            throw new \InvalidArgumentException('Invalid message');
        }

        $message = ltrim($message, "\r\n");

        $messageParts = preg_split("/\r?\n\r?\n/", $message, 2);

        if ($messageParts === false || count($messageParts) !== 2) {
            throw new \InvalidArgumentException('Invalid message: Missing header delimiter');
        }

        [$rawHeaders, $body] = $messageParts;
        $rawHeaders .= "\r\n"; // Put back the delimiter we split previously
        $headerParts = preg_split("/\r?\n/", $rawHeaders, 2);

        if ($headerParts === false || count($headerParts) !== 2) {
            throw new \InvalidArgumentException('Invalid message: Missing status line');
        }

        [$startLine, $rawHeaders] = $headerParts;

        if (preg_match("/(?:^HTTP\/|^[A-Z]+ \S+ HTTP\/)(\d+(?:\.\d+)?)/i", $startLine, $matches) && $matches[1] === '1.0') {
            // Header folding is deprecated for HTTP/1.1, but allowed in HTTP/1.0
            $rawHeaders = preg_replace(Rfc7230::HEADER_FOLD_REGEX, ' ', $rawHeaders);
        }

        /** @var array[] $headerLines */
        $count = preg_match_all(Rfc7230::HEADER_REGEX, $rawHeaders, $headerLines, PREG_SET_ORDER);

        // If these aren't the same, then one line didn't match and there's an invalid header.
        if ($count !== substr_count($rawHeaders, "\n")) {
            // Folding is deprecated, see https://tools.ietf.org/html/rfc7230#section-3.2.4
            if (preg_match(Rfc7230::HEADER_FOLD_REGEX, $rawHeaders)) {
                throw new \InvalidArgumentException('Invalid header syntax: Obsolete line folding');
            }

            throw new \InvalidArgumentException('Invalid header syntax');
        }

        $headers = [];

        foreach ($headerLines as $headerLine) {
            $headers[$headerLine[1]][] = $headerLine[2];
        }

        return [
            'start-line' => $startLine,
            'headers' => $headers,
            'body' => $body,
        ];
    }

    /**
     * Constructs a URI for an HTTP request message.
     *
     * @param string $path    Path from the start-line
     * @param array  $headers Array of headers (each value an array).
     */
    public static function parseRequestUri(string $path, array $headers): string
    {
        $hostKey = array_filter(array_keys($headers), function ($k) {
            return strtolower($k) === 'host';
        });

        // If no host is found, then a full URI cannot be constructed.
        if (!$hostKey) {
            return $path;
        }

        $host = $headers[reset($hostKey)][0];
        $scheme = substr($host, -4) === ':443' ? 'https' : 'http';

        return $scheme . '://' . $host . '/' . ltrim($path, '/');
    }

    /**
     * Parses a request message string into a request object.
     *
     * @param string $message Request message string.
     */
    public static function parseRequest(string $message): RequestInterface
    {
        $data = self::parseMessage($message);
        $matches = [];
        if (!preg_match('/^[\S]+\s+([a-zA-Z]+:\/\/|\/).*/', $data['start-line'], $matches)) {
            throw new \InvalidArgumentException('Invalid request string');
        }
        $parts = explode(' ', $data['start-line'], 3);
        $version = isset($parts[2]) ? explode('/', $parts[2])[1] : '1.1';

        $request = new Request(
            $parts[0],
            $matches[1] === '/' ? self::parseRequestUri($parts[1], $data['headers']) : $parts[1],
            $data['headers'],
            $data['body'],
            $version
        );

        return $matches[1] === '/' ? $request : $request->withRequestTarget($parts[1]);
    }

    /**
     * Parses a response message string into a response object.
     *
     * @param string $message Response message string.
     */
    public static function parseResponse(string $message): ResponseInterface
    {
        $data = self::parseMessage($message);
        // According to https://tools.ietf.org/html/rfc7230#section-3.1.2 the space
        // between status-code and reason-phrase is required. But browsers accept
        // responses without space and reason as well.
        if (!preg_match('/^HTTP\/.* [0-9]{3}( .*|$)/', $data['start-line'])) {
            throw new \InvalidArgumentException('Invalid response string: ' . $data['start-line']);
        }
        $parts = explode(' ', $data['start-line'], 3);

        return new Response(
            (int) $parts[1],
            $data['headers'],
            $data['body'],
            explode('/', $parts[0])[1],
            $parts[2] ?? null
        );
    }
}

Name	Size	Permission
AppendStream.php	5912 bytes	0644
BufferStream.php	3179 bytes	0644
CachingStream.php	4418 bytes	0644
DroppingStream.php	1142 bytes	0644
FnStream.php	4415 bytes	0644
Header.php	2084 bytes	0644
HttpFactory.php	3096 bytes	0644
InflateStream.php	1336 bytes	0644
LazyOpenStream.php	899 bytes	0644
LimitStream.php	4243 bytes	0644
Message.php	8202 bytes	0644
MessageTrait.php	6618 bytes	0644
MimeType.php	4305 bytes	0644
MultipartStream.php	4782 bytes	0644
NoSeekStream.php	470 bytes	0644
PumpStream.php	4538 bytes	0644
Query.php	3640 bytes	0644
Request.php	3900 bytes	0644
Response.php	4905 bytes	0644
Rfc7230.php	665 bytes	0644
ServerRequest.php	9447 bytes	0644
Stream.php	7222 bytes	0644
StreamDecoratorTrait.php	3295 bytes	0644
StreamWrapper.php	4109 bytes	0644
UploadedFile.php	4859 bytes	0644
Uri.php	21809 bytes	0644
UriNormalizer.php	8419 bytes	0644
UriResolver.php	8558 bytes	0644
Utils.php	14230 bytes	0644

File Content: Message.php

File Content: `Message.php`