Function _getTypeNumber

qrcode.js:469–503

* Get the type by string length * * @private * @param {String} sText * @param {Number} nCorrectLevel * @return {Number} type

(sText, nCorrectLevel)

	 * @return {Number} type
	 */
	function _getTypeNumber(sText, nCorrectLevel) {			
		var nType = 1;
		var length = _getUTF8Length(sText);
		
		for (var i = 0, len = QRCodeLimitLength.length; i <= len; i++) {
			var nLimit = 0;
			
			switch (nCorrectLevel) {
				case QRErrorCorrectLevel.L :
					nLimit = QRCodeLimitLength[i][0];
					break;
				case QRErrorCorrectLevel.M :
					nLimit = QRCodeLimitLength[i][1];
					break;
				case QRErrorCorrectLevel.Q :
					nLimit = QRCodeLimitLength[i][2];
					break;
				case QRErrorCorrectLevel.H :
					nLimit = QRCodeLimitLength[i][3];
					break;
			}
			
			if (length <= nLimit) {
				break;
			} else {
				nType++;
			}
		}
		
		if (nType > QRCodeLimitLength.length) {
			throw new Error("Too long data");
		}
		
		return nType;
	}

	function _getUTF8Length(sText) {
		var replacedText = encodeURI(sText).toString().replace(/\%[0-9a-fA-F]{2}/g, 'a');