Supported full width forms of ASCII characters (U+FF01 to U+FF5E).

pass4-finalize.js

@@ -0,0 +1,40 @@
+var fs = require('fs');
+var TTFReader = require('node-sfnt').TTFReader;
+var TTFWriter = require('node-sfnt').TTFWriter;
+function toArrayBuffer(buffer) {
+    var length = buffer.length;
+    var view = new DataView(new ArrayBuffer(length), 0, length);
+    for (var i = 0, l = length; i < l; i++) {
+        view.setUint8(i, buffer[i], false);
+    }
+    return view.buffer;
+}
+function toBuffer(arrayBuffer) {
+    var length = arrayBuffer.byteLength;
+    var view = new DataView(arrayBuffer, 0, length);
+    var buffer = new Buffer(length);
+    for (var i = 0, l = length; i < l; i++) {
+        buffer[i] = view.getUint8(i, false);
+    }
+    return buffer;
+}
+
+var options = {preserveOS2Version: true, preserveXAvgCharWidth: true, writeUnknownTables: true, hinting: true}
+
+function readttf(file) {
+    var data = fs.readFileSync(file);
+    var buffer = toArrayBuffer(data);
+    var ttf = (new TTFReader(options)).read(buffer);
+    return ttf;
+}
+
+function writettf(ttf, file){
+    var buffer = new TTFWriter(options).write(ttf);
+    fs.writeFileSync(file, toBuffer(buffer));
+}
+
+var ttf = readttf(process.argv[2]);
+// Fixes xAvgCharWidth
+ttf['OS/2'].xAvgCharWidth = ttf.head.unitsPerEm / 2; // 0.5em
+ttf.post.isFixedPitch = 1                            // mono
+fs.writeFileSync(process.argv[3], toBuffer(new TTFWriter(options).write(ttf)));