everything but conversion algorithm (the hardest part) done, not tested

Author: kevb34ns

pinyinify.js

@@ -1,17 +1,67 @@
 
-var isAlpha = function(char) {
-	return /^[A-Za-z]$/.test(char);
+String.prototype.isAlpha = function() {
+
+	return /^[A-Za-z]$/.test(this);
+}
+
+String.prototype.isPinyinVowel = function() {
+
+	return /^[aeiouv\u00fc]$/.test(this);
+}
+
+/**
+ * Unicode tone marks (in order)
+ * a: u0101 u00e1 u01ce u00e0
+ * e: u0113 u00e9 u011b u00e8
+ * i: u012b u00ed u01d0 u00ec
+ * o: u014d u00f3 u01d2 u00f2
+ * u: u016b u00fa u01d4 u00f9
+ * v: u01d6 u01d8 u01da u01dc
+ */
+String.prototype.convertPinyin = function() {
+
+	//TODO
 }
 
 var pinyinify = function(str) {
 
+	if (typeof str !== 'string') {
+
+		return str;
+	}
+
 	var res = "";
-	for (var i = 0; i < str.length; i++) {
+	var i = 0;
+	while (str.length > 0) {
+
 		var char = str.charAt(i);
-		if (isAlpha(char)) {
-			//TODO look for index of tone number
+		if (char.isAlpha()) {
+
+			res += str.substring(0, i);
+			str = str.substring(i);
+			i = 0;
+			var toneNumIndex = str.search(/[1-5]/);
+			if (toneNumIndex > 0 && toneNumIndex < 7) {
+				res += str.substring(0, toneNumIndex + 1).convertPinyin();
+				str = str.substring(toneNumIndex + 1);
+
+			} else {
+
+				var whitespaceIndex = str.search(/\s/);
+				if (whitespaceIndex < 0) {
+
+					res += str.substring(0);
+					str = "";
+				} else {
+
+					res += str.substring(0, whitespaceIndex + 1);
+					str = str.substring(whitespaceIndex + 1);
+				}
+			}
+
 		} else {
-			res += char;
+
+			i++;
 		}
 	}