private void RunGraphViz(string dotFile, string imageFile, LayoutEngine layoutEngine, string outputFomat)
{
if (!Directory.Exists(_graphVizFolder))
{
throw new DirectoryNotFoundException("Please install GraphViz and asign the installation folder!");
}
var prop = new ProcessStartInfo
{
FileName = Path.Combine(_graphVizFolder, layoutEngine.ToString() + ".exe"),
Arguments = "-" + outputFomat + " \"" + dotFile + "\" -o \"" + imageFile + "\"",
WindowStyle = ProcessWindowStyle.Hidden,
UseShellExecute = false,
RedirectStandardOutput = true,
RedirectStandardError = true,
};
Process process = Process.Start(prop);
string errorText = process.StandardError.ReadToEnd();
if (errorText != null && errorText.Contains("syntax error"))
{
throw new FormatException(errorText);
}
else if (errorText != null && errorText.Contains("Error:"))
{
throw new InvalidOperationException(errorText);
}
process.WaitForExit(120000);
}
public void AddLayout(Graph graphObject, LayoutEngine layoutEngine)
{
Arguments.NotNull(graphObject, nameof(graphObject));
this.ThrowIfDisposed();
var funcRet = NativeMethods.gvLayout(this.graphvizContextPtr, graphObject.SafeHandle, layoutEngine.ToString().ToLowerInvariant().ToCharArray());
var errorCode = Marshal.GetLastWin32Error();
this.Logger.Debug("gvLayout({0},{1},{2}):{3}", this.graphvizContextPtr, graphObject.SafeHandle, layoutEngine.ToString().ToLowerInvariant(), funcRet);
if (funcRet != NativeMethods.SUCCESS)
{
this.Logger.Error("gvLayout:{0} Win32ErrorCode:{1}", funcRet, errorCode);
throw new GraphvizApiException("error");
}
this.graph = graphObject;
}