index.js

#!/usr/bin/env node

var fs = require('fs');
var path = require('path');
var fontnik = require('fontnik');
var d3 = require('d3-queue');

    try {
        var fname = process.argv[2];

	var fontstack = fs.readFileSync(fname);
        console.log('Process '+fname);

	var rex = /([A-Z])([A-Z])([a-z])|([a-z])([A-Z])/g;
        var folder = path.basename(fname).slice(0, -4).replace('-','').replace(rex, '$1$4 $2$3$5');
        if (process.argv[3]) { 
            if (fs.existsSync(process.argv[3])) {
                folder = path.join(process.argv[3], folder);
            } else {
                console.error('Path ' + process.argv[3] + ' does not exist. Using default.');
            }             
        }
    } catch (e) {
        console.error('error: could not read font '+e)
        return;
    }

    if(!fs.existsSync(folder)){
       fs.mkdirSync(folder, 0766, function(err){
         if(err){
            console.log(err);
            response.send("ERROR! Can't make the directory! \n");
         }
       });
    }

     var q = d3.queue(Math.max(4, require('os').cpus().length));
     var queue = [];
     for (var i = 0; i < 65536; (i = i + 256)) {
         q.defer(writeGlyphs, {
            font: fontstack,
            start: i,
            end: Math.min(i + 255, 65535)
         });
     }


function writeGlyphs(opts, done) {
    fontnik.range(opts, function(err, zdata) {
        if (err) {
            console.warn(err.toString());
            process.exit(1);
        }
        fs.writeFileSync(folder + '/' + opts.start + '-' + opts.end + '.pbf', zdata);
        done();
    });
}