Add replacements for charCodeAt and fromCharCode.

diff --git a/utf16.js b/utf16.js
index 9c06cdd03423d566e471eb1d854efac0703f4933..87f9b910e870700fa55c9fb027cf507344750834 100644 (file)
--- a/utf16.js
+++ b/utf16.js
@@ -90,6 +90,13 @@ var charAt = function(string, offset) {
     return substring(string, offset, offset + 1);
 };
 
+var charCodeAt = function(string, offset) {
+    var char = charAt(string, offset);
+    if (char.length != 2)
+        return char.charCodeAt(0);
+    return 0x10000 | (char.charCodeAt(0) & 0x03ff) << 10 | char.charCodeAt(1) & 0x03ff
+};
+
 var length = function(string) {
     return unit2point(string, [string.length])[0];
 };
@@ -111,10 +118,18 @@ var Unicode = function(string) {
     this.length = length(string);
 };
 
+Unicode.fromCharCode = function() {
+    return encode(arguments);
+};
+
 Unicode.prototype.charAt = function(index) {
     return new Unicode(charAt(this.string, index));
 };
 
+Unicode.prototype.charCodeAt = function(index) {
+    return charCodeAt(this.string, index);
+};
+
 Unicode.prototype.substr = function(start, length) {
     return new Unicode(substr(this.string, start, length));
 };
@@ -135,6 +150,7 @@ return {
     unit2point: unit2point,
 
     charAt: charAt,
+    charCodeAt: charCodeAt,
     length: length,
     substr: substr,
     substring: substring,