Attribute names and value are now written in UTF-8 if TextEncoder exi…

…sts.

src/lib.js

@@ -26,8 +26,29 @@ module.exports.rpad = function rpad(str, len, char) {
  * @returns {number}
  */
 module.exports.writeField = function writeField(view, fieldLength, str, offset) {
+    var buffer = toBuffer(str);
     for (var i = 0; i < fieldLength; i++) {
-        view.setUint8(offset, str.charCodeAt(i)); offset++;
+        view.setUint8(offset, buffer[i]); offset++;
     }
     return offset;
 };
+
+/**
+ * @param {string} str
+ * @returns {object}
+ */
+function toBuffer(str) {
+    if (typeof TextEncoder === "function") {
+        var encoder = new TextEncoder();
+        return encoder.encode(str);
+    }
+
+    var buffer = new Uint16Array(str.length);
+    for (var i = 0; i < str.length; i++) {
+        buffer[i] = str.charCodeAt(i);
+    }
+
+    return buffer;
+}
+
+module.exports.toBuffer = toBuffer;

src/structure.js

@@ -44,15 +44,17 @@ module.exports = function structure(data, meta) {
     view.setInt8(32 + fieldDescLength - 1, 0x0D);
 
     field_meta.forEach(function(f, i) {
+        var offset = 32 + i * 32;
         // field name
-        f.name.split('').slice(0, 8).forEach(function(c, x) {
-            view.setInt8(32 + i * 32 + x, c.charCodeAt(0));
+        var buf = lib.toBuffer(f.name).slice(0, 11);
+        buf.forEach(function(b, x) {
+            view.setInt8(offset + x, b);
         });
         // field type
-        view.setInt8(32 + i * 32 + 11, f.type.charCodeAt(0));
+        view.setInt8(offset + 11, f.type.charCodeAt(0));
         // field length
-        view.setInt8(32 + i * 32 + 16, f.size);
-        if (f.type == 'N') view.setInt8(32 + i * 32 + 17, 3);
+        view.setInt8(offset + 16, f.size);
+        if (f.type == 'N') view.setInt8(offset + 17, 3);
     });
 
     offset = fieldDescLength + 32;