Icon Extraction in Windows using NodeJS

iconextractor.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
using System.Drawing;
using System.IO;
using Newtonsoft.Json;

namespace IconExtractor {

  class IconRequest {

    public string Context { get; set; }
    public string Path { get; set; }
    public string Base64ImageData { get; set; }

  }

  class Program {
    static void Main(string[] args) {

      // https://msdn.microsoft.com/en-us/library/ms404308%28v=vs.110%29.aspx?f=255&MSPPError=-2147217396
      
      Console.InputEncoding = UTF8Encoding.UTF8;
      Console.OutputEncoding = UTF8Encoding.UTF8;

      while (true) {

        string input = Console.In.ReadLine().Trim();
        IconRequest data = JsonConvert.DeserializeObject<IconRequest>(input);

        try {

          data.Base64ImageData = getIconAsBase64(data.Path);
          Console.WriteLine(JsonConvert.SerializeObject(data));

        } catch (Exception ex) {
          Console.Error.WriteLine(ex);
          Console.Error.WriteLine(input);
        }

      }

    }

    static string getIconAsBase64(string path) {
      if (!File.Exists(path)) {
        return "";
      }

      Icon iconForPath = SystemIcons.WinLogo;
      iconForPath = Icon.ExtractAssociatedIcon(path);

      ImageConverter vert = new ImageConverter();
      byte[] data = (byte[])vert.ConvertTo(iconForPath.ToBitmap(), typeof(byte[]));

      return Convert.ToBase64String(data);
    }
  }
}

iconextractor.js

var EventEmitter = require('events');
var fs = require('fs');
var child_process = require('child_process');
var _ = require('lodash');
var os = require('os');
var path = require('path');

function IconExtractor(){

  var self = this;
  var iconDataBuffer = "";

  this.emitter = new EventEmitter();
  this.iconProcess = child_process.spawn(getPlatformIconProcess());

  this.getIcon = function(context, path){
    var json = JSON.stringify({context: context, path: path}) + "\n";
    self.iconProcess.stdin.write(json);
  }

  this.iconProcess.stdout.on('data', function(data){

    var str = (new Buffer(data, 'utf8')).toString('utf8');

    iconDataBuffer += str;

    //Bail if we don't have a complete string to parse yet.
    if (!_.endsWith(str, '\n')){
      return;
    }

    //We might get more than one in the return, so we need to split that too.
    _.each(iconDataBuffer.split('\n'), function(buf){

      if(!buf || buf.length == 0){
        return;
      }

      try{
        self.emitter.emit('icon', JSON.parse(buf));
      } catch(ex){
        self.emitter.emit('error', ex);
      }

    });
  });

  this.iconProcess.on('error', function(err){
    self.emitter.emit('error', err.toString());
  });

  this.iconProcess.stderr.on('data', function(err){
    self.emitter.emit('error', err.toString());
  });

  function getPlatformIconProcess(){
    if(os.type() == 'Windows_NT'){
      return path.join(__dirname,'/bin/IconExtractor.exe');
      //Do stuff here to get the icon that doesn't have the shortcut thing on it
    } else {
      throw('This platform (' + os.type() + ') is unsupported =(');
    }
  }

}

module.exports = new IconExtractor();