index.js

// Generated by CoffeeScript 1.9.2

/*
    s m a r t c t l
 */

(function() {
  var exec, execSmart;

  exec = require('child_process').exec;


  /*
      R A W  C M D
   */

  module.exports.raw = execSmart = function(args, cb) {
    return exec("smartctl " + args, {
      maxBuffer: 1024 * 1024 * 24
    }, function(e, stdout, stderr) {
      var lines;
      lines = stdout.split('\n').slice(0, -1);
      if (e != null) {
        return cb(lines.slice(3), []);
      } else {
        return cb(null, lines.slice(4));
      }
    });
  };


  /*
      D E V I C E  I N F O S
   */

  module.exports.info = function(devicePath, cb) {
    return execSmart("-i " + devicePath, function(e, lines) {
      var deviceInfos, i, len, line, ref;
      if (e != null) {
        return cb(e, lines);
      }
      deviceInfos = {};
      ref = lines.slice(0, -1);
      for (i = 0, len = ref.length; i < len; i++) {
        line = ref[i];
        deviceInfos[line.substring(0, line.search(': ')).trim().replace(/\ +/g, '_').toLowerCase()] = line.substring(1 + line.search(': ')).trim();
      }
      return cb(null, deviceInfos);
    });
  };


  /*
      S M A R T  A T T R S
   */

  module.exports.smartAttrs = function(devicePath, cb) {
    return execSmart("-A -f brief " + devicePath, function(e, lines) {
      var attr, head, i, infos, len, line;
      if (e != null) {
        return cb(e, lines);
      }
      lines = lines.slice(2, -1);
      head = lines.shift();
      infos = [];
      for (i = 0, len = lines.length; i < len; i++) {
        line = lines[i];
        attr = line.substring(head.indexOf('ATTRIBUTE_NAME'), head.indexOf('FLAGS')).trim().toLowerCase();
        if (attr === '') {
          continue;
        }
        infos.push({
          attr: attr,
          id: Number(line.substring(0, head.indexOf('ATTRIBUTE_NAME')).trim()),
          flags: line.substring(head.indexOf('FLAGS'), head.indexOf('VALUE')).trim(),
          value: line.substring(head.indexOf('VALUE'), head.indexOf('WORST')).trim(),
          worst: line.substring(head.indexOf('WORST'), head.indexOf('THRESH')).trim(),
          thresh: line.substring(head.indexOf('THRESH'), head.indexOf('FAIL')).trim(),
          fail: line.substring(head.indexOf('FAIL'), head.indexOf('RAW_VALUE')).trim(),
          raw: Number(line.substring(head.indexOf('RAW_VALUE')).trim().split(' ')[0])
        });
      }
      return cb(null, infos);
    });
  };


  /*
      S M A R T  H E A L T H
   */

  module.exports.health = function(devicePath, cb) {
    return execSmart("-H " + devicePath, function(e, lines) {
      var status;
      if (e != null) {
        return cb(e, lines);
      }
      lines = lines.slice(0, -1);
      if (0 === lines[0].search('SMART overall-health self-assessment test result: ')) {
        status = lines[0].split(' ').pop().toLowerCase();
        return cb(null, status);
      } else {
        return cb(null, lines);
      }
    });
  };

  module.exports.scan = function(cb) {
    return exec('smartctl --scan-open', {
      maxBuffer: 1024 * 1024 * 24
    }, function(e, stdout, stderr) {
      var devices, i, len, n, ref;
      devices = [];
      ref = stdout.split('\n').slice(0, -1);
      for (i = 0, len = ref.length; i < len; i++) {
        n = ref[i];
        devices.push(n.split(' ')[0]);
      }
      return cb(devices);
    });
  };

}).call(this);