mincer.js

#!/usr/bin/env node

'use strict';


// stdlib
var fs    = require('fs');
var path  = require('path');


// 3rd-party
var ArgumentParser = require('argparse').ArgumentParser;


// internal
var Mincer      = require('..');
var shellwords  = require('../lib/mincer/common').shellwords;


////////////////////////////////////////////////////////////////////////////////


var cli = new ArgumentParser({
  prog:     'mincer',
  version:  require('../package.json').version,
  addHelp:  true
});


cli.addArgument(['--noenv'], {
  help:         'Disables .mincerrc file',
  action:       'storeTrue'
});

cli.addArgument(['-I', '--include'], {
  help:         'Adds the directory to the Mincer load path',
  metavar:      'DIRECTORY',
  action:       'append',
  required:     true
});

cli.addArgument(['-o', '--output'], {
  help:         'Copy provided assets into DIRECTORY',
  metavar:      'DIRECTORY'
});

cli.addArgument(['filenames'], {
  help:         'File(s) to process',
  metavar:      'FILE',
  nargs:        '+'
});


////////////////////////////////////////////////////////////////////////////////


if (-1 === process.argv.indexOf('--noenv')) {
  if (path.existsSync('./.mincerrc')) {
    var rcflags = shellwords(fs.readFileSync('./.mincerrc', 'utf8'));
    process.argv = process.argv.concat(rcflags);
  }
}


var args        = cli.parseArgs();
var environment = new Mincer.Environment(process.cwd());
var filenames   = [];


(process.env.MINCER_PATH || '').split(':').forEach(function (path) {
  if (path) {
    environment.appendPath(path);
  }
});

args.include.forEach(function (path) {
  environment.appendPath(path);
});

args.filenames.forEach(function (file) {
  filenames.push(path.normalize(file));
});


////////////////////////////////////////////////////////////////////////////////


//
// Configure Mincer logger
//


Mincer.logger.use(console);


//
// Compiling manifest with bunch of files
//


if (args.output) {
  var manifest = new Mincer.Manifest(environment, args.output);
  manifest.compile(filenames, function (err) {
    if (err) {
      console.error(err);
      process.exit(1);
    }
  });
  return;
}


if (1 === filenames.length) {
  var asset = environment.findAsset(filenames[0]);

  if (!asset) {
    console.error("Cannot find logical path: " + filenames[0]);
    process.exit(1);
  }

  asset.compile(function (err) {
    if (err) {
      console.error(err);
      process.exit(1);
    }

    process.stdout.write(asset.toString());
  });
  return;
}


console.error("Only one file can be compiled to stdout at a time");
process.exit(1);