omljs/lib/cli.js

Template engine built on top of the Oli language

var fs, oml, echo, version, program, options, init, parse, stdin, getSource, output, outputError;
fs = require('fs');
oml = require('./oml');
echo = require('./helpers').echo;
version = require('../package.json').version;
program = require('commander');
options = {
  indent: 2
};
exports.parse = function(it){
  program.parse(
  it);
  return init();
};
program.version(version).usage('[options] <path/to/file.oli>').option('-o, --output <file>', 'write output into a file instead of stdout').option('-i, --in-line', 'parse in-line argument as string').option('-p, --pretty', 'generate well-indented pretty output').option('-d, --indent <size>', 'Output indent size. Default to 2 spaces').option('-t, --tabs', 'use tabs instead of spaces to indent').option('-s, --stdin', 'read source from stdin');
program.on('--help', function(){
  echo('  Usage examples:');
  echo();
  echo('    $ oml file.oli > file.html');
  echo('    $ oml file.oli -o file.html');
  echo('    $ oml -i "div: p: Hello"');
  echo('    $ oml -s < file.oli');
  echo('    $ oml --indent 4 file.oli');
  echo('    $ oml --tabs file.oli');
  return echo();
});
program.on('in-line', function(){
  return options.inLine = true;
}).on('output', function(file){
  return options.output = file;
}).on('stdin', function(){
  return options.stdin = true;
}).on('tabs', function(){
  return options.pretty = options.tabs = true;
}).on('pretty', function(){
  return options.pretty = true;
}).on('indent', function(size){
  options.indent = size === null
    ? 2
    : parseInt(size, 10);
  return options.pretty = true;
});
init = function(){
  if (options.stdin) {
    return stdin();
  } else {
    return output(
    parse(
    getSource()));
  }
};
parse = function(it){
  return oml.render(it, options);
};
stdin = function(){
  var buf;
  buf = '';
  process.stdin.setEncoding('utf8');
  process.stdin.on('data', function(it){
    return buf += it;
  });
  return process.stdin.on('end', function(){
    if (buf) {
      process.stdout.write(parse(buf));
      return echo();
    }
  }).resume();
};
getSource = function(){
  var source;
  if (options.inLine) {
    source = program.args.join(' ');
  } else {
    if (program.args) {
      source = program.args.map(function(it){
        return fs.readFileSync(it);
      }).join(' ');
    }
  }
  return source;
};
output = function(it){
  if (options.output) {
    return fs.writeFileSync(options.output, it);
  } else {
    if (it) {
      return echo(
      it);
    }
  }
};
outputError = function(it){
  echo(it.name + ": " + it.message);
  if (it.errorLines) {
    echo('\n' + it.errorLines.join('\n'));
  }
  return process.exit(1);
};