overriding grunt output

overriding-grunt-output.js

  // --------

  var hooker = require('hooker'),
    prefix,
    newline = true;

  // Override grunt.log.header to update a per-line prefix and prevent default logging.

  hooker.hook(grunt.log, 'header', function () {
    prefix = '[' + grunt.task.current.nameArgs + '] ';
    return hooker.preempt();
  });

  // Override process.stdout to log the name+args of the current task before every logged line.

  hooker.hook(process.stdout, 'write', function (str) {
    str = String(str);
    if (newline) {
      if (str === '\n') {
        return hooker.preempt();
      } else if (prefix) {
        str = prefix + str.replace(/(\n)(?!$)/g, '$1' + prefix);
      }
    }
    newline = str.slice(-1) === '\n';
    return hooker.filter(this, [str]);
  });