arabic.php

<?php
/**
 * Copyright (C) 2016-2017 Hunter Ashton
 * This file is part of BruhhBot.
 * BruhhBot is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * BruhhBot is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with BruhhBot. If not, see <http://www.gnu.org/licenses/>.
 */



function check_utf8($str)
{
    $len = strlen($str);
    for ($i = 0; $i < $len; $i++) {
        $c = ord($str[$i]);
        if ($c > 128) {
            if (($c > 247)) {
                return false;
            } elseif ($c > 239) {
                $bytes = 4;
            } elseif ($c > 223) {
                $bytes = 3;
            } elseif ($c > 191) {
                $bytes = 2;
            } else {
                return false;
            }
            if (($i + $bytes) > $len) {
                return false;
            }
            while ($bytes > 1) {
                $i++;
                $b = ord($str[$i]);
                if ($b < 128 || $b > 191) {
                    return false;
                }
                $bytes--;
            }
        }
    }

    return true;
} // end of check_utf8

function uniord($u)
{
    // i just copied this function fron the php.net comments, but it should work fine!
    $k = mb_convert_encoding($u, 'UCS-2LE', 'UTF-8');
    $k1 = ord(substr($k, 0, 1));
    $k2 = ord(substr($k, 1, 1));

    return $k2 * 256 + $k1;
}
function is_arabic($str)
{
    if (mb_detect_encoding($str) !== 'UTF-8') {
        $str = mb_convert_encoding($str, mb_detect_encoding($str), 'UTF-8');
    }

    preg_match_all('/.|\n/u', $str, $matches);
    $chars = $matches[0];
    $arabic_count = 0;
    $latin_count = 0;
    $total_count = 0;
    foreach ($chars as $char) {
        //$pos = ord($char); we cant use that, its not binary safe
        $pos = uniord($char);

        if ($pos >= 1536 && $pos <= 1791) {
            $arabic_count++;
        } elseif ($pos > 123 && $pos < 123) {
            $latin_count++;
        }
        $total_count++;
    }
    if (($arabic_count / $total_count) > 0.6) {
        // 60% arabic chars, its probably arabic
        return true;
    }

    return false;
}

function check_for_links($update, $MadelineProto)
{
    if (array_key_exists('message', $update['update'])) {
        if (array_key_exists('message', $update['update']['message'])) {
            $pattern = '~[a-z]+://\S+~';
            if (preg_match_all($pattern, $update['update']['message']['message'], $out)) {
                return true;
            }
            if (array_key_exists('entities', $update['update']['message'])) {
                foreach ($update['update']['message']['entities'] as $entity) {
                    if (isset($entity['_'])) {
                        $links = ['messageEntityUrl', 'messageEntityTextUrl'];
                        if (in_array($entity['_'], $links)) {
                            return true;
                        }
                    }
                }
            }
            if (array_key_exists('media', $update['update']['message'])) {
                if (isset($update['update']['message']['media']['_'])) {
                    if ($update['update']['message']['media']['_'] == 'messageMediaWebPage') {
                        return true;
                    }
                }
            }
        }
    }

    return false;
}