/** * Conversor * Classe para codificar/decodificar dados com algoritmo baseado no MIME base64 * Métodos: * encode64 : codifica dados * decode64 : decodifica dados * str_replace : substituição de caracteres * Atributos: * strValues : string contendo os 64 caracteres mais o sufixo = * arrSearch : Array com caracteres acentuados não suportados pelo padrão de codificação... MIME base64 * arrReplace : Array com caracteres para substituição dos caracteres não suportados * strOutput : string de retorno ( dado codificado ou decodificado ) * chr_1, chr_2, chr_3, enc_1, enc_2, enc_3, enc_4 : variáveis auxiliares (usados nos métodos encode64 e decode64) * Observações: * - No padrão original do MIME base64 usa-se a seguinte sequência de caracteres na codificação/decodificação: * ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/= * - Nessa padrão substituimos o caractere + pelo * para evitar erro em transferência via Ajax * ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789* /= */ var Conversor = { strValues : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789*/=", //arrSearch : new Array('ä','è','ë','ì','î','ï','ò','ö','ù','û','Ä','È','Ë','Ì','Î','Ï','Ò','Ö','Ù','Û','Ü'), arrReplace : new Array('a','e','e','i','i','i','o','o','u','u','A','E','E','I','I','I','O','O','U','U','U'), strOutput : "", chr_1 : "", chr_2 : "", chr_3 : "", enc_1 : "", enc_2 : "", enc_3 : "", enc_4 : "", /** * Método para codificar dados em padrão baseado no MIME base64 * Parâmetro: * - strInput : String a ser codificada * Retorno: * - retorna a string codificada para MIME base64 * Exemplo de uso: * var encode = Conversor.encode64('Uma string') */ encode64 : function( strInput ){ strInput = this.htmlentities(strInput); this.strOutput = ""; this.chr_1, this.chr_2, this.chr_3,this.enc_1, this.enc_2, this.enc_3, this.enc_4 = ""; //strInput = this.str_replace(this.arrSearch,this.arrReplace,strInput); var i = 0; do{ this.chr_1 = strInput.charCodeAt( i++ ); this.chr_2 = strInput.charCodeAt( i++ ); this.chr_3 = strInput.charCodeAt( i++ ); this.enc_1 = this.chr_1 >> 2; this.enc_2 = ( ( this.chr_1 & 3 ) << 4 ) | ( this.chr_2 >> 4 ); this.enc_3 = ( ( this.chr_2 & 15 ) << 2 ) | ( this.chr_3 >> 6 ); this.enc_4 = this.chr_3 & 63; if( isNaN( this.chr_2 ) ) this.enc_3 = this.enc_4 = 64; else if( isNaN( this.chr_3 ) ) this.enc_4 = 64; this.strOutput += this.strValues.charAt( this.enc_1 ) + this.strValues.charAt( this.enc_2 ) + this.strValues.charAt( this.enc_3 ) + this.strValues.charAt( this.enc_4 ); }while( i < strInput.length ); return this.strOutput; }, /** * Método para decodificar para String * Parâmetro: * - strInput : String codificada * Retorno: * - retorna a string decodificada * Exemplo de uso: * var decode = Conversor.decode64('VW1hIHN0cmluZw==') */ decode64 : function( strInput ){ this.strOutput = ""; this.chr_1, this.chr_2, this.chr_3,this.enc_1, this.enc_2, this.enc_3, this.enc_4 = ""; var i = 0; // remove todos os caracteres diferentes de A-Z, a-z, 0-9, +, /, = strInput = strInput.replace(/[^A-Za-z0-9\*\/\=]/g, ""); do{ this.enc_1 = this.strValues.indexOf( strInput.charAt( i++ ) ); this.enc_2 = this.strValues.indexOf( strInput.charAt( i++ ) ); this.enc_3 = this.strValues.indexOf( strInput.charAt( i++ ) ); this.enc_4 = this.strValues.indexOf( strInput.charAt( i++ ) ); this.chr_1 = ( this.enc_1 << 2 ) | ( this.enc_2 >> 4 ); this.chr_2 = ( ( this.enc_2 & 15 ) << 4 ) | ( this.enc_3 >> 2 ); this.chr_3 = ( ( this.enc_3 & 3 ) << 6 ) | this.enc_4; this.strOutput += String.fromCharCode( this.chr_1 ); if( this.enc_3 != 64 ) this.strOutput += String.fromCharCode( this.chr_2 ); if( this.enc_4 != 64 ) this.strOutput += String.fromCharCode( this.chr_3 ); }while( i < strInput.length ); return this.strOutput; }, // http://kevin.vanzonneveld.net // + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // + improved by: Gabriel Paderni // + improved by: Philip Peterson // + improved by: Simon Willison (http://simonwillison.net) // + revised by: Jonas Raoni Soares Silva (http://www.jsfromhell.com) // + bugfixed by: Anton Ongson // + input by: Onno Marsman // + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // + tweaked by: Onno Marsman // + input by: Brett Zamir (http://brettz9.blogspot.com) // + bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // * example 1: str_replace(' ', '.', 'Kevin van Zonneveld'); // * returns 1: 'Kevin.van.Zonneveld' // * example 2: str_replace(['{name}', 'l'], ['hello', 'm'], '{name}, lars'); // * returns 2: 'hemmo, mars' str_replace : function(search, replace, subject) { var f = search, r = replace, s = subject; var ra = r instanceof Array, sa = s instanceof Array, f = [].concat(f), r = [].concat(r), i = (s = [].concat(s)).length; while(j = 0, i--){ if(s[i]) while (s[i] = s[i].split(f[j]).join(ra ? r[j] || "" : r[0]), ++j in f){}; }; return sa ? s : s[0]; }, htmlentities : function(string, quote_style) { // http://kevin.vanzonneveld.net // + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // + revised by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // + improved by: nobbler // + tweaked by: Jack // + bugfixed by: Onno Marsman // + revised by: Kevin van Zonneveld (http://kevin.vanzonneveld.net) // - depends on: get_html_translation_table // * example 1: htmlentities('Kevin & van Zonneveld'); // * returns 1: 'Kevin & van Zonneveld' // * example 2: htmlentities("foo'bar","ENT_QUOTES"); // * returns 2: 'foo'bar' var histogram = {}, symbol = '', tmp_str = '', entity = ''; tmp_str = string.toString(); if (false === (histogram = this.get_html_translation_table('HTML_ENTITIES', quote_style))) { return false; } for (symbol in histogram) { entity = histogram[symbol]; tmp_str = tmp_str.split(symbol).join(entity); } return tmp_str; }, get_html_translation_table : function (table, quote_style) { // http://kevin.vanzonneveld.net // + 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: {'"': '"', '&': '&', '<': '<', '>': '>'} 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'] = '&'; if (useQuoteStyle !== 'ENT_NOQUOTES') { entities['34'] = '"'; } if (useQuoteStyle === 'ENT_QUOTES') { entities['39'] = '''; } entities['60'] = '<'; entities['62'] = '>'; if (useTable === 'HTML_ENTITIES') { entities['160'] = ' '; entities['161'] = '¡'; entities['162'] = '¢'; entities['163'] = '£'; entities['164'] = '¤'; entities['165'] = '¥'; entities['166'] = '¦'; entities['167'] = '§'; entities['168'] = '¨'; entities['169'] = '©'; entities['170'] = 'ª'; entities['171'] = '«'; entities['172'] = '¬'; entities['173'] = '­'; entities['174'] = '®'; entities['175'] = '¯'; entities['176'] = '°'; entities['177'] = '±'; entities['178'] = '²'; entities['179'] = '³'; entities['180'] = '´'; entities['181'] = 'µ'; entities['182'] = '¶'; entities['183'] = '·'; entities['184'] = '¸'; entities['185'] = '¹'; entities['186'] = 'º'; entities['187'] = '»'; entities['188'] = '¼'; entities['189'] = '½'; entities['190'] = '¾'; entities['191'] = '¿'; entities['192'] = 'À'; entities['193'] = 'Á'; entities['194'] = 'Â'; entities['195'] = 'Ã'; entities['196'] = 'Ä'; entities['197'] = 'Å'; entities['198'] = 'Æ'; entities['199'] = 'Ç'; entities['200'] = 'È'; entities['201'] = 'É'; entities['202'] = 'Ê'; entities['203'] = 'Ë'; entities['204'] = 'Ì'; entities['205'] = 'Í'; entities['206'] = 'Î'; entities['207'] = 'Ï'; entities['208'] = 'Ð'; entities['209'] = 'Ñ'; entities['210'] = 'Ò'; entities['211'] = 'Ó'; entities['212'] = 'Ô'; entities['213'] = 'Õ'; entities['214'] = 'Ö'; entities['215'] = '×'; entities['216'] = 'Ø'; entities['217'] = 'Ù'; entities['218'] = 'Ú'; entities['219'] = 'Û'; entities['220'] = 'Ü'; entities['221'] = 'Ý'; entities['222'] = 'Þ'; entities['223'] = 'ß'; entities['224'] = 'à'; entities['225'] = 'á'; entities['226'] = 'â'; entities['227'] = 'ã'; entities['228'] = 'ä'; entities['229'] = 'å'; entities['230'] = 'æ'; entities['231'] = 'ç'; entities['232'] = 'è'; entities['233'] = 'é'; entities['234'] = 'ê'; entities['235'] = 'ë'; entities['236'] = 'ì'; entities['237'] = 'í'; entities['238'] = 'î'; entities['239'] = 'ï'; entities['240'] = 'ð'; entities['241'] = 'ñ'; entities['242'] = 'ò'; entities['243'] = 'ó'; entities['244'] = 'ô'; entities['245'] = 'õ'; entities['246'] = 'ö'; entities['247'] = '÷'; entities['248'] = 'ø'; entities['249'] = 'ù'; entities['250'] = 'ú'; entities['251'] = 'û'; entities['252'] = 'ü'; entities['253'] = 'ý'; entities['254'] = 'þ'; entities['255'] = 'ÿ'; } // ascii decimals to real symbols for (decimal in entities) { symbol = String.fromCharCode(decimal); histogram[symbol] = entities[decimal]; } return histogram; } }