
         0)
                      {
                          Array.Resize(ref lines, lines.Length + 1);
                      }
                      lineIndex = lines.Length - 1;

                      // End with new line
                      Array.Resize(ref lines, lines.Length + 1);
                  }
                  lines[lineIndex] = newLine;
                  File.WriteAllLines(checkFile, lines);
              }
              catch (Exception ex)
              {
                  Log.LogWarningFromException(ex, showStackTrace: false);
              }
          }

          private int GetCheckFileLineIndexSha1(string[] lines, string name, out string sha1)
          {
              for (int i = 0; i < lines.Length; i++)
              {
                  string line = lines[i];
                  string[] lineParts = line.Split('=');
                  if (lineParts.Length == 2)
                  {
                      string lineTag = lineParts[0].Trim();
                      string lineSha1 = lineParts[1].Trim();
                      if (lineTag == name)
                      {
                          sha1 = lineSha1;
                          return i;
                      }
                  }
              }
              sha1 = null;
              return -1;
          }

          private bool CheckFileSha1(string file, string expectedSha1, out string actualSha1)
          {
              using (var fs = new FileStream(file, FileMode.Open))
              {
                  var hasher = System.Security.Cryptography.SHA1.Create();
                  byte[] hash = hasher.ComputeHash(fs);
                  actualSha1 = BytesToHexString(hash);
                  if (String.Equals(actualSha1, expectedSha1, StringComparison.OrdinalIgnoreCase))
                  {
                      return true;
                  }
              }
              return false;
          }

          private string BytesToHexString(byte[] data)
          {
              var sb = new StringBuilder();
              foreach (byte b in data)
              {
                  sb.Append(b.ToString("x2"));
              }
              return sb.ToString();
          }

          private static void ExtractZip(string zipPath, string destinationDirectory, bool overwrite)
          {
              var archive = ZipFile.OpenRead(zipPath);
              if (!overwrite)
              {
                  archive.ExtractToDirectory(destinationDirectory);
                  return;
              }
              foreach (ZipArchiveEntry file in archive.Entries)
              {
                  string fileName = Path.Combine(destinationDirectory, file.FullName);
                  string directory = Path.GetDirectoryName(fileName);
                  if (!Directory.Exists(directory))
                  {
                      Directory.CreateDirectory(directory);
                  }
                  if (file.Name != String.Empty)
                  {
                      file.ExtractToFile(fileName, true);
                  }
              }
          }
        ]]>