smartemailing/types

<?php

declare(strict_types = 1);

namespace SmartEmailing\Types\Helpers;

use Nette\Utils\Strings;

abstract class StringHelpers
{

    final public static function sanitize(
        string $string
    ): string {
        $string = Strings::fixEncoding($string);
        $string = self::removeUtf8Mb4($string);
        $string = Strings::trim($string);
        $string = self::normalizeLineEndings($string);

        return $string;
    }

    final public static function sanitizeOrNull(
        ?string $string
    ): ?string {
        if ($string === null) {
            return null;
        }

        return self::sanitize($string);
    }

    final public static function sanitizeUtf8Mb4(
        string $string
    ): string {
        $string = Strings::fixEncoding($string);
        $string = Strings::trim($string);
        $string = self::normalizeLineEndings($string);

        return $string;
    }

    final public static function sanitizeUtf8Mb4OrNull(
        ?string $string
    ): ?string {
        if ($string === null) {
            return null;
        }

        return self::sanitizeUtf8Mb4($string);
    }

    final public static function removeUtf8Mb4(
        string $value
    ): string {
        return (string) \preg_replace(
            '/[\x{10000}-\x{10FFFF}]/u',
            "\xEF\xBF\xBD",
            $value
        );
    }

    final public static function removeWhitespace(
        string $value
    ): string {
        $replaceTable = [];

        foreach (InvisibleSpaceCharacterCodes::getCodes() as $charCode) {
            $replaceTable[\chr($charCode)] = '';
        }

        return \strtr(
            $value,
            $replaceTable
        );
    }

    final public static function normalizeWhitespace(
        string $value
    ): string {
        $value = \preg_replace('/\p{C}+/u', ' ', $value);

        return (string) \preg_replace(
            '/\s+/',
            ' ',
            (string) $value
        );
    }

    final public static function normalizeLineEndings(
        string $value
    ): string {
        return \strtr(
            $value,
            [
                "\r\n" => "\n",
                "\r" => "\n",
            ]
        );
    }

}