<?php

namespace Workerman\Protocols;

use Workerman\Connection\ConnectionInterface;

use function rtrim;
use function strlen;
use function strpos;

/**
 * Text Protocol.
 */
class Text
{
    /**
     * Check the integrity of the package.
     *
     * @param string $buffer
     * @param ConnectionInterface $connection
     * @return int
     */
    public static function input(string $buffer, ConnectionInterface $connection): int
    {
        // Judge whether the package length exceeds the limit.
        if (isset($connection->maxPackageSize) && strlen($buffer) >= $connection->maxPackageSize) {
            $connection->close();
            return 0;
        }
        //  Find the position of  "\n".
        $pos = strpos($buffer, "\n");
        // No "\n", packet length is unknown, continue to wait for the data so return 0.
        if ($pos === false) {
            return 0;
        }
        // Return the current package length.
        return $pos + 1;
    }

    /**
     * Encode.
     *
     * @param string $buffer
     * @return string
     */
    public static function encode(string $buffer): string
    {
        // Add "\n"
        return $buffer . "\n";
    }

    /**
     * Decode.
     *
     * @param string $buffer
     * @return string
     */
    public static function decode(string $buffer): string
    {
        // Remove "\n"
        return rtrim($buffer, "\r\n");
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzA1NjYyNDg5Njg2MTQ0MyAxNDM1MTA1MDU0MTIzNzUxIDUzNzE4MjkwNTY1MjAxMTQ=