sequence thing

index.js

'use strict';

var echoPort = '/dev/pts/3';
var track = '';

var _require = require('child_process'),
    spawn = _require.spawn,
    exec = _require.exec;

var child = spawn('./dejarik');
process.stdin.pipe(child.stdin);
var phase = 1;
var phaseTwoPosition = 0;
var upDown = true;
var seqTrig = false;
var seq = [];
var lastSeq = '';
var debug = true;
child.stderr.on('data', function (data) {
  if (debug) {
    console.log(`${data}`);
  }
});
child.stdout.on('data', function (data) {
  if (debug) {
    console.log(`${data}`);
  }
  var lines = trim(data.toString()).split(/\n/);

  for (var lineIndex in lines) {
    var line = lines[lineIndex];
    process_line(line);
  }
});

function process_line(line) {
  if (!debug) {
    if (!line.match(/^\*|\#/))
      console.log(line);
  }

  if (line.match(/^#/)) {
    track = parseInt(line.replace(/\/.*$/, '').replace(/^#/, ''))
    // console.log('#' + track)
    if (seqTrig) {
      seqTrig = false;
    } else {
      seqTrig = true;
    }
  }

  if (seqTrig) {
    var thisLine = line.replace(/.*:\s*/, '');

    if (thisLine) {
      //console.log(`add line to sequence: ${line}`)
      seq.push(line.replace(/.*:\s*/, ''));
      //console.log(`sequence: ${JSON.stringify(seq)}`)
    }
  } else {
    //console.log(`sequence: ${JSON.stringify(seq)}`)
    if (seq.length > 0) {
      if (seq.length > 1) {
        if (seq[1].match(/^Phase ONE/)) {
          phase = 2;
          seq = [];
          seqTrig = true;
        } else if (seq[1].match(/^Phase TWO/)) {
          phase = 3;
          seq = [];
          seqTrig = true;
        }
      }
      if (seq.length > 0) {
        sendSequence(seq);
        seqTrig = false;
        seq = [];
      }
    }
  }
}
var lastFirst = true;
function sendSequence(seq) {
  if (!seq.length) { return; }
  console.log("[p" + phase + "][" + pad(track, 3) + "] => " + JSON.stringify(seq));
  switch (phase) {
    case 1:
      if (track == 26 || track == 41 || track == 56 || track == 71) {
        upDown = true;
      }
      if (track > 10) {
        if (upDown) {
          // console.log('Remove the first element from the sequence: ' + seq[0]);
          seq.shift();
        }
        if (seq.length <= 1) {
          upDown = false;
        }
      }
      break;
    case 2:
      // console.log('       prev: ' + lastSeq);
      if (lastFirst) {
        var last = seq.pop();
        seq.splice(0, 0, last);
      } else {
        var first = seq.shift();
        seq.push(first);
      }
      if (JSON.stringify(seq) === lastSeq) {
        if (lastFirst) {
          var first = seq.shift();
          seq.push(first);
          var second = seq.shift();
          seq.push(second);
          lastFirst = false;
        } else {
          var last = seq.pop();
          seq.splice(0, 0, last);
          var second = seq.pop();
          seq.splice(0, 0, second);
          lastFirst = true;
        }
      }
      // console.log("    after => " + JSON.stringify(seq));
      lastSeq = JSON.stringify(seq)
      break;
  }
  var cmd = '';

  for (var seqInd in seq) {
    cmd += (cmd.length > 0 ? ' && ' : '') + "echo " + seq[seqInd] + " > " + echoPort;
  }
  // if (phase == 2)
  //   console.log("cmd: " + cmd);

  exec("" + cmd, function (err, stdout, stderr) {
    if (err) {
      console.error("exec error: " + err);
      return;
    }

    // console.log("successful!!!");
  });
}
function trim(str) {
  return str.replace(/^\s*/, '').replace(/\s*$/, '');
}
function pad(n, width, z) {
  z = z || '0';
  n = n + '';
  return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
}