53 lines
1.9 KiB
JavaScript
53 lines
1.9 KiB
JavaScript
var path = require('path');
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var fs = require('fs');
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var TTFReader = require('node-sfnt').TTFReader;
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var TTFWriter = require('node-sfnt').TTFWriter;
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var toml = require('toml');
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var param = toml.parse(fs.readFileSync(path.join(path.dirname(require.main.filename), 'parameters.toml'), 'utf-8'))
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function toArrayBuffer(buffer) {
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var length = buffer.length;
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var view = new DataView(new ArrayBuffer(length), 0, length);
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for (var i = 0, l = length; i < l; i++) {
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view.setUint8(i, buffer[i], false);
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}
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return view.buffer;
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}
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function toBuffer(arrayBuffer) {
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var length = arrayBuffer.byteLength;
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var view = new DataView(arrayBuffer, 0, length);
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var buffer = new Buffer(length);
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for (var i = 0, l = length; i < l; i++) {
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buffer[i] = view.getUint8(i, false);
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}
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return buffer;
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}
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var options = {preserveOS2Version: true, preserveXAvgCharWidth: true, writeUnknownTables: true, hinting: true}
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function readttf(file) {
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var data = fs.readFileSync(file);
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var buffer = toArrayBuffer(data);
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var ttf = (new TTFReader(options)).read(buffer);
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return ttf;
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}
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function writettf(ttf, file){
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var buffer = new TTFWriter(options).write(ttf);
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fs.writeFileSync(file, toBuffer(buffer));
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}
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var ttf = readttf(process.argv[2]);
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// Fixes xAvgCharWidth
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ttf['OS/2'].xAvgCharWidth = ttf.head.unitsPerEm / 2; // 0.5em
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ttf['OS/2'].sxHeight = param.iosevka.xheight
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ttf['OS/2'].sCapHeight = param.iosevka.cap
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ttf['OS/2'].fsSelection |= (ttf['OS/2'].usWeightClass > 400 ? 1 << 5 : 0) | (ttf.post.italicAngle ? 1 : 0)
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ttf.head.macStyle |= (ttf['OS/2'].usWeightClass > 400 ? 1 : 0) | (ttf.post.italicAngle ? 2 : 0)
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ttf.post.isFixedPitch = 1 // mono
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ttf.DSIG = { // add a dummy SDIG
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name: 'DSIG',
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content: [0, 0, 0, 1, 0, 0, 0, 0]
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}
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fs.writeFileSync(process.argv[3], toBuffer(new TTFWriter(options).write(ttf))); |