stylus-linux.js

var fs = require('fs'),
    path = require('path'),
    child_process = require('child_process');


function watchStyles(sourcefile, destinationfolder) {

  var Stylus = child_process.spawn('stylus', ['-c','-u','nib','-w', sourcefile, '--out', destinationfolder]);

  Stylus.stdout.pipe(process.stdout); // notifications: watching, compiled, generated.
  Stylus.stderr.pipe(process.stdout); // warnings: ParseError.

  Stylus.on('error', function(err) {
    console.log(`Stylus process(${Stylus.pid}) error: ${err}`);
    console.log(err);
  });

  // Report unclean exit.
  Stylus.on('close', function (code) {
    if (code !== 0) {
      console.log(`Stylus process(${Stylus.pid}) exited with code: ${code}`);
    }
  });

}


function getDirectories(srcpath) {
  return fs.readdirSync(srcpath).filter(function(file) {
    return fs.statSync(path.join(srcpath, file)).isDirectory();
  });
}

//var directories = getDirectories(__dirname);

var directories = [
  'apps',
  'static',
  'templates'
];


function fromDir(directory, startPath, filter){


    if (!fs.existsSync(startPath)){
        return;
    }

    var files = fs.readdirSync(startPath);

    for(var i=0;i<files.length;i++){
        var filename = path.join(startPath,files[i]);
        var stat = fs.lstatSync(filename);
        if (stat.isDirectory()){
            fromDir(filename, filename, filter); //recurse
        }
        else if (filename.indexOf(filter)>=0) {
          watchStyles(filename,`${directory.replace('stylus','')}css/`);
        };
    };
};


for(let directory of directories)
{
  fromDir(`${__dirname}/${directory}/`,`${__dirname}/${directory}/`,'.styl');
}