// JavaScript Document
function htmlspecialchars (string, quote_style) {
    // Convert special characters to HTML entities  
    // 
    // version: 905.1002
    // discuss at: http://phpjs.org/functions/htmlspecialchars
    // +   original by: Mirek Slugen
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   bugfixed by: Nathan
    // +   bugfixed by: Arno
    // +    revised by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // -    depends on: get_html_translation_table
    // *     example 1: htmlspecialchars("<a href='test'>Test</a>", 'ENT_QUOTES');
    // *     returns 1: '&lt;a href=&#039;test&#039;&gt;Test&lt;/a&gt;'
    var histogram = {}, symbol = '', tmp_str = '', entity = '';
    tmp_str = string.toString();
    
    if (false === (histogram = this.get_html_translation_table('HTML_SPECIALCHARS', quote_style))) {
        return false;
    }
    
    for (symbol in histogram) {
        entity = histogram[symbol];
        tmp_str = tmp_str.split(symbol).join(entity);
    }
    
    return tmp_str;
}


function get_html_translation_table(table, quote_style) {
    // Returns the internal translation table used by htmlspecialchars and htmlentities  
    // 
    // version: 905.412
    // discuss at: http://phpjs.org/functions/get_html_translation_table
    // +   original by: Philip Peterson
    // +    revised by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   bugfixed by: noname
    // +   bugfixed by: Alex
    // +   bugfixed by: Marco
    // +   bugfixed by: madipta
    // +   improved by: KELAN
    // +   improved by: Brett Zamir (http://brettz9.blogspot.com)
    // %          note: It has been decided that we're not going to add global
    // %          note: dependencies to php.js. Meaning the constants are not
    // %          note: real constants, but strings instead. integers are also supported if someone
    // %          note: chooses to create the constants themselves.
    // *     example 1: get_html_translation_table('HTML_SPECIALCHARS');
    // *     returns 1: {'"': '&quot;', '&': '&amp;', '<': '&lt;', '>': '&gt;'}
    
    var entities = {}, histogram = {}, decimal = 0, symbol = '';
    var constMappingTable = {}, constMappingQuoteStyle = {};
    var useTable = {}, useQuoteStyle = {};
    
    // Translate arguments
    constMappingTable[0]      = 'HTML_SPECIALCHARS';
    constMappingTable[1]      = 'HTML_ENTITIES';
    constMappingQuoteStyle[0] = 'ENT_NOQUOTES';
    constMappingQuoteStyle[2] = 'ENT_COMPAT';
    constMappingQuoteStyle[3] = 'ENT_QUOTES';

    useTable 	  = !isNaN(table) ? constMappingTable[table] : table ? table.toUpperCase() : 'HTML_SPECIALCHARS';
    useQuoteStyle = !isNaN(quote_style) ? constMappingQuoteStyle[quote_style] : quote_style ? quote_style.toUpperCase() : 'ENT_COMPAT';

    if (useTable !== 'HTML_SPECIALCHARS' && useTable !== 'HTML_ENTITIES') {
        throw Error("Table: "+useTable+' not supported');
        // return false;
    }

    // ascii decimals for better compatibility
    entities['38'] = '&amp;';
    if (useQuoteStyle !== 'ENT_NOQUOTES') {
        entities['34'] = '&quot;';
    }
    if (useQuoteStyle === 'ENT_QUOTES') {
        entities['39'] = '&#039;';
    }
    entities['60'] = '&lt;';
    entities['62'] = '&gt;';

    if (useTable === 'HTML_ENTITIES') {
	    entities['160'] = '&nbsp;';
	    entities['161'] = '&iexcl;';
	    entities['162'] = '&cent;';
	    entities['163'] = '&pound;';
	    entities['164'] = '&curren;';
	    entities['165'] = '&yen;';
	    entities['166'] = '&brvbar;';
	    entities['167'] = '&sect;';
	    entities['168'] = '&uml;';
	    entities['169'] = '&copy;';
	    entities['170'] = '&ordf;';
	    entities['171'] = '&laquo;';
	    entities['172'] = '&not;';
	    entities['173'] = '&shy;';
	    entities['174'] = '&reg;';
	    entities['175'] = '&macr;';
	    entities['176'] = '&deg;';
	    entities['177'] = '&plusmn;';
	    entities['178'] = '&sup2;';
	    entities['179'] = '&sup3;';
	    entities['180'] = '&acute;';
	    entities['181'] = '&micro;';
	    entities['182'] = '&para;';
	    entities['183'] = '&middot;';
	    entities['184'] = '&cedil;';
	    entities['185'] = '&sup1;';
	    entities['186'] = '&ordm;';
	    entities['187'] = '&raquo;';
	    entities['188'] = '&frac14;';
	    entities['189'] = '&frac12;';
	    entities['190'] = '&frac34;';
	    entities['191'] = '&iquest;';
	    entities['192'] = '&Agrave;';
	    entities['193'] = '&Aacute;';
	    entities['194'] = '&Acirc;';
	    entities['195'] = '&Atilde;';
	    entities['196'] = '&Auml;';
	    entities['197'] = '&Aring;';
	    entities['198'] = '&AElig;';
	    entities['199'] = '&Ccedil;';
	    entities['200'] = '&Egrave;';
	    entities['201'] = '&Eacute;';
	    entities['202'] = '&Ecirc;';
	    entities['203'] = '&Euml;';
	    entities['204'] = '&Igrave;';
	    entities['205'] = '&Iacute;';
	    entities['206'] = '&Icirc;';
	    entities['207'] = '&Iuml;';
	    entities['208'] = '&ETH;';
	    entities['209'] = '&Ntilde;';
	    entities['210'] = '&Ograve;';
	    entities['211'] = '&Oacute;';
	    entities['212'] = '&Ocirc;';
	    entities['213'] = '&Otilde;';
	    entities['214'] = '&Ouml;';
	    entities['215'] = '&times;';
	    entities['216'] = '&Oslash;';
	    entities['217'] = '&Ugrave;';
	    entities['218'] = '&Uacute;';
	    entities['219'] = '&Ucirc;';
	    entities['220'] = '&Uuml;';
	    entities['221'] = '&Yacute;';
	    entities['222'] = '&THORN;';
	    entities['223'] = '&szlig;';
	    entities['224'] = '&agrave;';
	    entities['225'] = '&aacute;';
	    entities['226'] = '&acirc;';
	    entities['227'] = '&atilde;';
	    entities['228'] = '&auml;';
	    entities['229'] = '&aring;';
	    entities['230'] = '&aelig;';
	    entities['231'] = '&ccedil;';
	    entities['232'] = '&egrave;';
	    entities['233'] = '&eacute;';
	    entities['234'] = '&ecirc;';
	    entities['235'] = '&euml;';
	    entities['236'] = '&igrave;';
	    entities['237'] = '&iacute;';
	    entities['238'] = '&icirc;';
	    entities['239'] = '&iuml;';
	    entities['240'] = '&eth;';
	    entities['241'] = '&ntilde;';
	    entities['242'] = '&ograve;';
	    entities['243'] = '&oacute;';
	    entities['244'] = '&ocirc;';
	    entities['245'] = '&otilde;';
	    entities['246'] = '&ouml;';
	    entities['247'] = '&divide;';
	    entities['248'] = '&oslash;';
	    entities['249'] = '&ugrave;';
	    entities['250'] = '&uacute;';
	    entities['251'] = '&ucirc;';
	    entities['252'] = '&uuml;';
	    entities['253'] = '&yacute;';
	    entities['254'] = '&thorn;';
	    entities['255'] = '&yuml;';
    }
    
    // ascii decimals to real symbols
    for (decimal in entities) {
        symbol = String.fromCharCode(decimal);
        histogram[symbol] = entities[decimal];
    }
    
    return histogram;
}

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