XoopsModules25x / xlanguage

class/Utility.php

<?php

namespace XoopsModules\Xlanguage;

use XoopsModules\Xlanguage\{Common
};
use Xmf\Request;

/** @var Helper $helper */
/** @var LanguageHandler $languageHandler */

/**
 * Class Utility
 */
class Utility extends Common\SysUtility
{
    //--------------- Custom module methods -----------------------------
    /**
     * @param $value
     * @param $out_charset
     * @param $in_charset
     * @return array|string
     */
    public static function convertEncoding($value, $out_charset, $in_charset)
    {
        if (\is_array($value)) {
            foreach ($value as $key => $val) {
                $value[$key] = static::convertEncoding($val, $out_charset, $in_charset);
            }
        } else {
            $value = static::convertItem($value, $out_charset, $in_charset);
        }

        return $value;
    }

    /**
     * @param $value
     * @param $out_charset
     * @param $in_charset
     * @return string
     */
    public static function convertItem($value, $out_charset, $in_charset)
    {
        if (mb_strtolower($in_charset) == mb_strtolower($out_charset)) {
            return $value;
        }

        $xconvHandler = @\xoops_getModuleHandler('xconv', 'xconv', true);
        if (\is_object($xconvHandler) && $convertedValue = @$xconvHandler->convert_encoding($value, $out_charset, $in_charset)) {

The method convert_encoding() does not exist on XoopsObjectHandler. It seems like you code against a sub-type of XoopsObjectHandler such as XoopsPersistableObjectHandler.

            return $convertedValue;
        }
        if (XOOPS_USE_MULTIBYTES && \function_exists('mb_convert_encoding')) {
            $convertedValue = @mb_convert_encoding($value, $out_charset, $in_charset);
        } elseif (\function_exists('iconv')) {
            $convertedValue = @\iconv($in_charset, $out_charset, $value);
        }
        $value = empty($convertedValue) ? $value : $convertedValue;

        return $value;
    }

    /**
     * @return mixed
     */
    public static function createConfig()
    {
        $helper          = Helper::getInstance();
        $languageHandler = $helper->getHandler('Language');

        return $languageHandler->createConfig();
    }

    /**
     * @return mixed
     */
    public static function loadConfig()
    {
        $helper          = Helper::getInstance();
        $languageHandler = $helper->getHandler('Language');
        $config          = $languageHandler->loadFileConfig();

        return $config;
    }

    /**
     * Analyzes some PHP environment variables to find the most probable language
     * that should be used
     *
     * @param string $str
     * @param string $envType
     * @return int|string
     * @internal param $string $ string to analyze
     * @internal param $integer $ type of the PHP environment variable which value is $str
     *
     * @global        array    the list of available translations
     * @global        string   the retained translation keyword
     * @access   private
     */
    public static function langDetect($str = '', $envType = '')
    {
        require dirname(__DIR__) . '/include/vars.php';
        $lang = '';

        if (!empty($available_languages)) {

The variable $available_languages seems to never exist and therefore empty should always be true.

            foreach ($available_languages as $key => $value) {
                // $envType =  1 for the 'HTTP_ACCEPT_LANGUAGE' environment variable,
                //             2 for the 'HTTP_USER_AGENT' one
                $expr = $value[0];
                if (false === mb_strpos($expr, '[-_]')) {
                    $expr = \str_replace('|', '([-_][[:alpha:]]{2,3})?|', $expr);
                }
                //        if (($envType == 1 && eregi('^(' . $expr . ')(;q=[0-9]\\.[0-9])?$', $str))
                //            || ($envType == 2 && eregi('(\(|\[|;[[:space:]])(' . $expr . ')(;|\]|\))', $str))) {
                if ((1 == $envType && \preg_match('#^(' . $expr . ')(;q=[0-9]\\.[0-9])?$#i', $str)) || (2 == $envType && \preg_match('#(\(|\[|;[[:space:]])(' . $expr . ')(;|\]|\))#i', $str))) {
                    $lang = $key;
                    //if($lang != 'en')
                    break;
                }
            }
        }

        return $lang;
    }

    /**
     * @return string|bool
     */
    public static function detectLang()
    {
        global  $_SERVER;
        //      if (!empty($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
        if (Request::hasVar('HTTP_ACCEPT_LANGUAGE', 'SERVER')) {
            $HTTP_ACCEPT_LANGUAGE = Request::getString('HTTP_ACCEPT_LANGUAGE', '', 'SERVER');
        }

        //if (!empty($_SERVER['HTTP_USER_AGENT'])) {
        if (Request::hasVar('HTTP_USER_AGENT', 'SERVER')) {
            $HTTP_USER_AGENT = Request::getString('HTTP_USER_AGENT', '', 'SERVER');
        }

        $lang       = '';
        $xoops_lang = '';
        // 1. try to findout user's language by checking its HTTP_ACCEPT_LANGUAGE variable

            if (empty($lang) && !empty($HTTP_ACCEPT_LANGUAGE)) {
                $accepted    = explode(',', $HTTP_ACCEPT_LANGUAGE);
                reset($accepted);
                foreach ($accepted as $iValue) {
                    $lang = static::langDetect($iValue, 1);
                    if (strncasecmp($lang, 'en', 2)) {
                        break;
                    }
                }
            }

        //This returns the most preferred language "q=1"
        $lang = static::getPreferredLanguage();

        // 2. if not found in HTTP_ACCEPT_LANGUAGE, try to find user's language by checking its HTTP_USER_AGENT variable
        if (empty($lang) && !empty($HTTP_USER_AGENT)) {
            $lang = static::langDetect($HTTP_USER_AGENT, 2);
        }
        // 3. If we catch a valid language, configure it
          if (!empty($lang)) {
            $xoops_lang = isset($available_languages[$lang][1])?:'';

The variable $available_languages seems to never exist and therefore isset should always be false.

        }

        return $xoops_lang;
    }

    /**
     * @param $output
     * @return array|string|null
     */
    public static function encodeCharSet($output)
    {
        global $xlanguage;
        $output = static::cleanMultiLang($output);
        // escape XML doc
        if (\preg_match("/^\<\?[\s]?xml[\s]+version=([\"'])[^\>]+\\1[\s]+encoding=([\"'])[^\>]+\\2[\s]?\?\>/i", $output)) {

It seems like $output can also be of type array and null and string[]; however, parameter $subject of preg_match() does only seem to accept string, maybe add an additional type check?

            return $output;
        }
        $in_charset  = $xlanguage['charset_base'];
        $out_charset = $xlanguage['charset'];

        $output = static::convertEncoding($output, $out_charset, $in_charset);

        return $output;
    }

    /**
     * @param string $text
     * @return array|string|string[]|null
     */
    public static function cleanMultiLang($text)
    {
        global $xoopsConfig;
        global $xlanguage_langs;
        $patterns = [];
        if (!isset($xlanguage_langs)) {
            $xlanguage_langs = [];
            $helper          = Helper::getInstance();
            $languageHandler = $helper->getHandler('Language');
            $langs           = $languageHandler->getAll(true);
            //        $langs = $GLOBALS['xlanguageHandler']->getAll(true); //mb
            if (false !== $langs) {
                foreach (\array_keys($langs) as $_lang) {
                    $xlanguage_langs[$_lang] = $langs[$_lang]->getVar('lang_code');
                }
            }
            unset($langs);
        }
        if (empty($xlanguage_langs) || 0 == \count($xlanguage_langs)) {
            return $text;
        }

        // escape brackets inside of <code>...</code>
        $patterns[] = '/(\<code>.*\<\/code>)/isU';

        // escape brackets inside of <input type="..." value="...">
        $patterns[] = '/(\<input\b(?![^\>]*\btype=([\'"]?)(submit|image|reset|button))[^\>]*\>)/isU';

        // escape brackets inside of <textarea></textarea>
        $patterns[] = '/(\<textarea\b[^>]*>[^\<]*\<\/textarea>)/isU';

        $text = \preg_replace_callback($patterns, 'static::escapeBracketMultiLang', $text);

        // create the pattern between language tags
        $pqhtmltags  = \explode(',', preg_quote(\XLANGUAGE_TAGS_RESERVED, '/'));

The assignment to $pqhtmltags is dead and can be removed.

        $mid_pattern = '(?:(?!(' . \str_replace(',', '|', preg_quote(\XLANGUAGE_TAGS_RESERVED, '/')) . ')).)*';

        $patterns = [];
        $replaces = [];

        if (isset($xlanguage_langs[$xoopsConfig['language']])) {
            $lang       = $xlanguage_langs[$xoopsConfig['language']];
            $patterns[] = '/(\[([^\]]*\|)?' . preg_quote($lang, '~') . '(\|[^\]]*)?\])(' . $mid_pattern . ')(\[\/([^\]]*\|)?' . preg_quote($lang, '~') . '(\|[^\]]*)?\])/isU';
            $replaces[] = '$4';
        }

        foreach (\array_keys($xlanguage_langs) as $_lang) {
            if ($_lang == @$xoopsConfig['language']) {
                continue;
            }
            $name       = $xlanguage_langs[$_lang];
            $patterns[] = '/(\[([^\]]*\|)?' . preg_quote($name, '~') . '(\|[^\]]*)?\])(' . $mid_pattern . ')(\[\/([^\]]*\|)?' . preg_quote($name, '~') . '(\|[^\]]*)?(\]\<br[\s]?[\/]?\>|\]))/isU';
            $replaces[] = '';
        }
        if (!empty($xoopsConfig['language'])) {
            $text = \preg_replace('/\[[\/]?[\|]?' . preg_quote($xoopsConfig['language'], '~') . '[\|]?\](\<br \/\>)?/i', '', $text);
        }
        if (\count($replaces) > 0) {
            $text = \preg_replace($patterns, $replaces, $text);
        }

        return $text;
    }

    /**
     * @param $matches
     * @return mixed
     */
    public static function escapeBracketMultiLang($matches)
    {
        global $xlanguage_langs;
        $ret = $matches[1];
        if (!empty($xlanguage_langs)) {
            $pattern = '/(\[([\/])?(' . \implode('|', \array_map('\preg_quote', \array_values($xlanguage_langs))) . ')([\|\]]))/isU';
            $ret     = \preg_replace($pattern, '&#91;\\2\\3\\4', $ret);
        }

        return $ret;
    }

    /**
     * @param null|array $options
     * @return bool
     */
    public static function showSelectedLanguage($options = null)
    {
        require_once XOOPS_ROOT_PATH . '/modules/xlanguage/blocks/xlanguage_blocks.php';
        if (empty($options)) {
            $options[0] = 'images'; // display style: image, text, select
            $options[1] = ' '; // delimitor
            $options[2] = 5; // items per line
        }

        $block        = \b_xlanguage_select_show($options);
        $block['tag'] = 'xlanguage';

        $content = '';
        $i       = 1;
        if (!empty($block['display'])) { //mb
            if (\in_array($block['display'], ['images', 'text'])) {
                foreach ($block['languages'] as $name => $lang) {
                    $content .= '<a href="' . $block['url'] . $lang['name'] . '" title="' . $lang['desc'] . '">';
                    if ('images' === $block['display']) {
                        $content .= '<img src="' . $lang['image'] . '" alt="' . $lang['desc'] . '"';
                        if ($block['selected'] != $lang['name']) {
                            $content .= ' style="MozOpacity: .8; opacity: .8; filter:Alpha(opacity=80);"';
                        }
                        $content .= '>';
                    } else {
                        $content .= $lang['desc'];
                    }
                    $content .= '</a>';
                    if (0 == (++$i % $block['number'])) {
                        $content .= '<br>';
                    }
                }
            } else {
                $content .= '<select name="' . $block['tag'] . '"
                onChange="if (this.options[this.selectedIndex].value.length >0) { window.document.location=this.options[this.selectedIndex].value;}"
                >';
                if (!empty($block['languages'])) { //mb
                    foreach ($block['languages'] as $name => $lang) {
                        $content .= '<option value="' . $block['url'] . $lang['name'] . '"';
                        if ($block['selected'] == $lang['name']) {
                            $content .= ' selected ';
                        }
                        $content .= '>' . $lang['desc'] . '</option>';
                    }
                }
                $content .= '</select>';
            }
        }

        \define('XLANGUAGE_SWITCH_CODE', $content);

        return true;
    }

    /**
     * @return int|string
     */
    public static function getPreferredLanguage()
    {
        $langs = [];
        $lang  = '';
        //        if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
        if (Request::hasVar('HTTP_ACCEPT_LANGUAGE', 'SERVER')) {
            // break up string into pieces (languages and q factors)
            $temp = Request::getString('HTTP_ACCEPT_LANGUAGE', '', 'SERVER');
            \preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.\d+))?/i', $temp, $lang_parse);
            if (\count($lang_parse[1])) {
                // create a list like "en" => 0.8
                $langs = \array_combine($lang_parse[1], $lang_parse[4]);
                // set default to 1 for any without q factor
                foreach ($langs as $lang => $val) {
                    if ('' === $val) {
                        $langs[$lang] = 1;
                    }
                }
                // sort list based on value
                \arsort($langs, \SORT_NUMERIC);
            }
        }
        //extract most important (first)
        foreach ($langs as $lang => $val) {
            break;
        }
        //if complex language simplify it
        if (false !== mb_strpos($lang, '-')) {
            $tmp  = \explode('-', $lang);
            $lang = $tmp[0];
        }

        return $lang;
    }
}