@sctg/fontminify
Version:
Minify font seamlessly, font subsetter, webfont (eot, woff, svg) converter.
70 lines (69 loc) • 1.81 kB
JavaScript
/**
* @file otf2ttf
* @author junmer eltorio
*/
/* eslint-env node */
import isOtf from 'is-otf';
import through from 'through2';
import fe from 'fonteditor-core';
import { b2ab } from 'b3b';
import { ab2b } from 'b3b';
import replaceExt from 'replace-ext';
import _ from 'lodash';
const TTFWriter = fe.TTFWriter;
const otf2ttfobject = fe.otf2ttfobject;
import { getSubsetText, string2unicodes, } from '../lib/util.js';
/**
* otf2ttf fontmin plugin
*
* @param {Object} opts opts
* @return {Object} stream.Transform instance
* @api public
*/
export default opts => {
opts = _.extend({ clone: false, hinting: true }, opts);
// prepare subset
const subsetText = getSubsetText(opts);
opts.subset = string2unicodes(subsetText);
return through.ctor({
objectMode: true
}, function (file, enc, cb) {
// check null
if (file.isNull()) {
cb(null, file);
return;
}
// check stream
if (file.isStream()) {
cb(new Error('Streaming is not supported'));
return;
}
// check otf
if (!isOtf(file.contents)) {
cb(null, file);
return;
}
// clone
if (opts.clone) {
this.push(file.clone(false));
}
// replace ext
file.path = replaceExt(file.path, '.ttf');
// ttf info
let ttfBuffer;
let ttfObj;
// try otf2ttf
try {
ttfObj = otf2ttfobject(b2ab(file.contents), opts);
ttfBuffer = ab2b(new TTFWriter(opts).write(ttfObj));
}
catch (ex) {
cb(ex);
}
if (ttfBuffer) {
file.contents = ttfBuffer;
file.ttfObject = ttfObj;
cb(null, file);
}
});
};