<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Polyfill\Intl\Normalizer;

/**
 * Normalizer is a PHP fallback implementation of the Normalizer class provided by the intl extension.
 *
 * It has been validated with Unicode 6.3 Normalization Conformance Test.
 * See http://www.unicode.org/reports/tr15/ for detailed info about Unicode normalizations.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 *
 * @internal
 */
class Normalizer
{
    public const FORM_D = \Normalizer::FORM_D;
    public const FORM_KD = \Normalizer::FORM_KD;
    public const FORM_C = \Normalizer::FORM_C;
    public const FORM_KC = \Normalizer::FORM_KC;
    public const NFD = \Normalizer::NFD;
    public const NFKD = \Normalizer::NFKD;
    public const NFC = \Normalizer::NFC;
    public const NFKC = \Normalizer::NFKC;

    private static $C;
    private static $D;
    private static $KD;
    private static $cC;
    private static $ulenMask = ["\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4];
    private static $ASCII = "\x20\x65\x69\x61\x73\x6E\x74\x72\x6F\x6C\x75\x64\x5D\x5B\x63\x6D\x70\x27\x0A\x67\x7C\x68\x76\x2E\x66\x62\x2C\x3A\x3D\x2D\x71\x31\x30\x43\x32\x2A\x79\x78\x29\x28\x4C\x39\x41\x53\x2F\x50\x22\x45\x6A\x4D\x49\x6B\x33\x3E\x35\x54\x3C\x44\x34\x7D\x42\x7B\x38\x46\x77\x52\x36\x37\x55\x47\x4E\x3B\x4A\x7A\x56\x23\x48\x4F\x57\x5F\x26\x21\x4B\x3F\x58\x51\x25\x59\x5C\x09\x5A\x2B\x7E\x5E\x24\x40\x60\x7F\x00\x01\x02\x03\x04\x05\x06\x07\x08\x0B\x0C\x0D\x0E\x0F\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F";

    public static function isNormalized(string $s, int $form = self::FORM_C)
    {
        if (!\in_array($form, [self::NFD, self::NFKD, self::NFC, self::NFKC])) {
            return false;
        }
        if (!isset($s[strspn($s, self::$ASCII)])) {
            return true;
        }
        if (self::NFC == $form && preg_match('//u', $s) && !preg_match('/[^\x00-\x{2FF}]/u', $s)) {
            return true;
        }

        return self::normalize($s, $form) === $s;
    }

    public static function normalize(string $s, int $form = self::FORM_C)
    {
        if (!preg_match('//u', $s)) {
            return false;
        }

        switch ($form) {
            case self::NFC: $C = true; $K = false; break;
            case self::NFD: $C = false; $K = false; break;
            case self::NFKC: $C = true; $K = true; break;
            case self::NFKD: $C = false; $K = true; break;
            default:
                if (\defined('Normalizer::NONE') && \Normalizer::NONE == $form) {
                    return $s;
                }

                if (80000 > \PHP_VERSION_ID) {
                    return false;
                }

                throw new \ValueError('normalizer_normalize(): Argument #2 ($form) must be a a valid normalization form');
        }

        if ('' === $s) {
            return '';
        }

        if ($K && null === self::$KD) {
            self::$KD = self::getData('compatibilityDecomposition');
        }

        if (null === self::$D) {
            self::$D = self::getData('canonicalDecomposition');
            self::$cC = self::getData('combiningClass');
        }

        if (null !== $mbEncoding = (2 /* MB_OVERLOAD_STRING */ & (int) \ini_get('mbstring.func_overload')) ? mb_internal_encoding() : null) {
            mb_internal_encoding('8bit');
        }

        $r = self::decompose($s, $K);

        if ($C) {
            if (null === self::$C) {
                self::$C = self::getData('canonicalComposition');
            }

            $r = self::recompose($r);
        }
        if (null !== $mbEncoding) {
            mb_internal_encoding($mbEncoding);
        }

        return $r;
    }

    private static function recompose($s)
    {
        $ASCII = self::$ASCII;
        $compMap = self::$C;
        $combClass = self::$cC;
        $ulenMask = self::$ulenMask;

        $result = $tail = '';

        $i = $s[0] < "\x80" ? 1 : $ulenMask[$s[0] & "\xF0"];
        $len = \strlen($s);

        $lastUchr = substr($s, 0, $i);
        $lastUcls = isset($combClass[$lastUchr]) ? 256 : 0;

        while ($i < $len) {
            if ($s[$i] < "\x80") {
                // ASCII chars

                if ($tail) {
                    $lastUchr .= $tail;
                    $tail = '';
                }

                if ($j = strspn($s, $ASCII, $i + 1)) {
                    $lastUchr .= substr($s, $i, $j);
                    $i += $j;
                }

                $result .= $lastUchr;
                $lastUchr = $s[$i];
                $lastUcls = 0;
                ++$i;
                continue;
            }

            $ulen = $ulenMask[$s[$i] & "\xF0"];
            $uchr = substr($s, $i, $ulen);

            if ($lastUchr < "\xE1\x84\x80" || "\xE1\x84\x92" < $lastUchr
                || $uchr < "\xE1\x85\xA1" || "\xE1\x85\xB5" < $uchr
                || $lastUcls) {
                // Table lookup and combining chars composition

                $ucls = $combClass[$uchr] ?? 0;

                if (isset($compMap[$lastUchr.$uchr]) && (!$lastUcls || $lastUcls < $ucls)) {
                    $lastUchr = $compMap[$lastUchr.$uchr];
                } elseif ($lastUcls = $ucls) {
                    $tail .= $uchr;
                } else {
                    if ($tail) {
                        $lastUchr .= $tail;
                        $tail = '';
                    }

                    $result .= $lastUchr;
                    $lastUchr = $uchr;
                }
            } else {
                // Hangul chars

                $L = \ord($lastUchr[2]) - 0x80;
                $V = \ord($uchr[2]) - 0xA1;
                $T = 0;

                $uchr = substr($s, $i + $ulen, 3);

                if ("\xE1\x86\xA7" <= $uchr && $uchr <= "\xE1\x87\x82") {
                    $T = \ord($uchr[2]) - 0xA7;
                    0 > $T && $T += 0x40;
                    $ulen += 3;
                }

                $L = 0xAC00 + ($L * 21 + $V) * 28 + $T;
                $lastUchr = \chr(0xE0 | $L >> 12).\chr(0x80 | $L >> 6 & 0x3F).\chr(0x80 | $L & 0x3F);
            }

            $i += $ulen;
        }

        return $result.$lastUchr.$tail;
    }

    private static function decompose($s, $c)
    {
        $result = '';

        $ASCII = self::$ASCII;
        $decompMap = self::$D;
        $combClass = self::$cC;
        $ulenMask = self::$ulenMask;
        if ($c) {
            $compatMap = self::$KD;
        }

        $c = [];
        $i = 0;
        $len = \strlen($s);

        while ($i < $len) {
            if ($s[$i] < "\x80") {
                // ASCII chars

                if ($c) {
                    ksort($c);
                    $result .= implode('', $c);
                    $c = [];
                }

                $j = 1 + strspn($s, $ASCII, $i + 1);
                $result .= substr($s, $i, $j);
                $i += $j;
                continue;
            }

            $ulen = $ulenMask[$s[$i] & "\xF0"];
            $uchr = substr($s, $i, $ulen);
            $i += $ulen;

            if ($uchr < "\xEA\xB0\x80" || "\xED\x9E\xA3" < $uchr) {
                // Table lookup

                if ($uchr !== $j = $compatMap[$uchr] ?? ($decompMap[$uchr] ?? $uchr)) {
                    $uchr = $j;

                    $j = \strlen($uchr);
                    $ulen = $uchr[0] < "\x80" ? 1 : $ulenMask[$uchr[0] & "\xF0"];

                    if ($ulen != $j) {
                        // Put trailing chars in $s

                        $j -= $ulen;
                        $i -= $j;

                        if (0 > $i) {
                            $s = str_repeat(' ', -$i).$s;
                            $len -= $i;
                            $i = 0;
                        }

                        while ($j--) {
                            $s[$i + $j] = $uchr[$ulen + $j];
                        }

                        $uchr = substr($uchr, 0, $ulen);
                    }
                }
                if (isset($combClass[$uchr])) {
                    // Combining chars, for sorting

                    if (!isset($c[$combClass[$uchr]])) {
                        $c[$combClass[$uchr]] = '';
                    }
                    $c[$combClass[$uchr]] .= $uchr;
                    continue;
                }
            } else {
                // Hangul chars

                $uchr = unpack('C*', $uchr);
                $j = (($uchr[1] - 224) << 12) + (($uchr[2] - 128) << 6) + $uchr[3] - 0xAC80;

                $uchr = "\xE1\x84".\chr(0x80 + (int) ($j / 588))
                       ."\xE1\x85".\chr(0xA1 + (int) (($j % 588) / 28));

                if ($j %= 28) {
                    $uchr .= $j < 25
                        ? ("\xE1\x86".\chr(0xA7 + $j))
                        : ("\xE1\x87".\chr(0x67 + $j));
                }
            }
            if ($c) {
                ksort($c);
                $result .= implode('', $c);
                $c = [];
            }

            $result .= $uchr;
        }

        if ($c) {
            ksort($c);
            $result .= implode('', $c);
        }

        return $result;
    }

    private static function getData($file)
    {
        if (file_exists($file = __DIR__.'/Resources/unidata/'.$file.'.php')) {
            return require $file;
        }

        return false;
    }
}

• [D] Resources
• [F] bootstrap.php
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• [F] bootstrap80.php
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• [F] composer.json
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• [F] LICENSE
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• [F] Normalizer.php
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• [F] README.md
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About Section

About NFC Pay: Our Story and Mission

NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.

• Simplifying Payments, One Tap at a Time.
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• Smart Payments for a Effortless Lifestyle.
• Experience the Ease of Tap and Pay.
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FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

How do I register for NFC Pay?

Download the app and sign up using your email or phone number, then complete the verification process.

Is my payment information secure?

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Can I add multiple cards to my NFC Pay wallet?

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How do I transfer money to another user?

Go to the transfer section, select the recipient, enter the amount, and authorize the transfer.

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