simulator.js

const { spawn } = require('child_process');
const chalk = require('chalk');
const builder = require('xmlbuilder');
const fs = require('fs');
const Store = require('electron-store');

const EventEmitter = require('events');
class MyEmitter extends EventEmitter {}

var store = null;

module.exports = {
    child: {},
    log: new MyEmitter(),
    running: false,
    path: '',
    setStore: function(s) {
      store = s;
    },
    start: function() {
    if (!this.running) {
        if (this.path !== '') {

           if (process.platform === "win32") {
             child = spawn('wvp', [], {
                 'cwd': this.path + '/bin/'
             })
           } else {
             child = spawn('./wvp_run', [], {
                 'cwd': this.path + '/wvp_sim/Frameworks/'
             })
           }

            child.stdout.on('data', (data) => {
                this.log.emit('new', Utf8ArrayToStr(data));
            });

            if (child.pid !== null) {
                this.running = true
                this.log.emit('new', "Simulator sucessfully started");
                console.log(chalk.blue('Simulator Started: ') + child.pid)
            }
        } else {
          this.log.emit('new', "No path to simulator currently set! Please set a path.");
        }
    } else {
        console.log(chalk.magenta("Can't run two simulators at once!"))
        this.log.emit('new', "Can't run two simulators yet!");
    }
},

    stop: function() {
        child.kill(); // does not terminate the node process in the shell

        if (child.killed) {
          console.log(chalk.red('Simulator Killed'));
          this.running = false
        }
    },

    setPath: function(path) {
      this.path = path;
      console.log(chalk.magenta('Path Set: ') + this.path)
      this.log.emit('new', "New Simulator Path Set: " + this.path);

      store.set('path', this.path);
    },

    saveCurrentAsXML: function(e) {
      this.saveJsonToXMLFileAtPath(e, this.path + "/wvp_sim/wvp_9876/sim/simhw.xml")
    },

    saveJsonToXMLFileAtPath: function(e, path) {
      var xml = this.jsonToXML(e);
      fs.writeFile(path, xml, function(err) {
          if(err) {
              return console.log(err);
          }
          console.log('File written')
      });
    },

    jsonToXML: function(e) {
      var xml = builder.create('simhw', {}, {}, {'headless':true})
      .ele('frametype', {'type':e.frames[0].frameType}, '').root()

      for (var card in e.frames[0].cards) {
        if (e.frames[0].cards[card] !== 'x') {
          var item = xml.ele('card')
          item.att('id', "slot-" + card);
          item.att('type', e.frames[0].cards[card]);
          item.att('slot', card)
          item.txt(cards[e.frames[0].cards[card]])
        }
      }
      for (var l = 0; l < 4; l++) {
        var link = e.frames[0].links[l];
        if (typeof link == "object") {
          if (link.connection.frameType !== null) {
            var item = xml.ele('linkinfo')
            item.att('selfslot', link.cardId)
            item.att('selfconn', link.connectorId)
            item.att('detectframetype', link.connection.frameType)
            item.att('detectslot', link.connection.frameSlot)
            item.att('detectsconn', link.connection.frameConnector)
            item.att('detectunitid', link.connection.unitId)
            item.att('detectip', link.connection.ipAddress)
            if (typeof link.connection.macAddress == "string") {
              link.connection.macAddress = link.connection.macAddress.toLowerCase()
            }
            item.att('detectmac', link.connection.macAddress)
          }
        }
      }
      xml = xml.end({ pretty: true, allowEmpty: true});
      return xml;
    }
}


const cards = {
  0: "CardType_Input_2_DVI",
  1: "CardType_Input_4_SDI",
  2: "CardType_Input_4_HDMI_DP",
  3: "CardType_Input_6_TRI_COMBO",
  4: "CardType_Input_4_HDMI20",
  5: "CardType_Input_4_DP",
  20: "CardType_Output_2_DVI",
  21: "CardType_Output_4_SDI",
  22: "CardType_Output_4_HDMI",
  23: "CardType_Output_DP",
  25: "CardType_Output_6_TRI_COMBO",
  26: "CardType_Output_4_HDMI20",
  40: "CardType_Output_Multiviewer",
  50: "CardType_VPU",
  52: "CardType_VPU",
  70: "CardType_Exp"
}

function Utf8ArrayToStr(array) {
    var out, i, len, c;
    var char2, char3;

    out = "";
    len = array.length;
    i = 0;
    while(i < len) {
    c = array[i++];
    switch(c >> 4)
    {
      case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
        // 0xxxxxxx
        out += String.fromCharCode(c);
        break;
      case 12: case 13:
        // 110x xxxx   10xx xxxx
        char2 = array[i++];
        out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
        break;
      case 14:
        // 1110 xxxx  10xx xxxx  10xx xxxx
        char2 = array[i++];
        char3 = array[i++];
        out += String.fromCharCode(((c & 0x0F) << 12) |
                       ((char2 & 0x3F) << 6) |
                       ((char3 & 0x3F) << 0));
        break;
    }
    }

    return out;
}