public void Render(string filePath)
{
if (!IsDotInstalled)
{
Logger.LogError(new FileNotFoundException("dot tool (Graphviz) is not installed"));
return;
}
string ext = Path.GetExtension(filePath);
if (ext.Length > 0)
{
ext = ext.Substring(1);
}
GraphvizOutputFormat outputFormat = OutputFormat;
string imagePath = filePath;
bool appendExt = false;
if (OutputFormat == GraphvizOutputFormat.None)
{
if (!Enum.TryParse(ext, true, out outputFormat))
{
outputFormat = GraphvizOutputFormat.Png;
imagePath = $"{imagePath}.{outputFormat.ToString().ToLowerInvariant()}";
appendExt = true;
}
}
else
{
string outputFormatString = OutputFormat.ToString().ToLowerInvariant();
if (!filePath.EndsWith(outputFormatString))
{
imagePath = $"{imagePath}.{outputFormatString}";
appendExt = true;
}
}
string dotFilePath = appendExt ? filePath + ".dot" : Path.ChangeExtension(filePath, "dot");
File.WriteAllText(dotFilePath, DotGraph);
var processor = new Processor("dot")
{
Arguments = $"\"{dotFilePath}\" -T{outputFormat.ToString().ToLowerInvariant()} -o \"{imagePath}\""
};
processor.ErrorDataReceived += (sender, e) =>
{
Logger.LogError(new Exception($"Error while graph rendering: {e}"));
};
ProcessExecutionResult executionResult = processor.Start();
if (!SaveDot)
{
File.Delete(dotFilePath);
}
if (executionResult.ExitCode != 0)
{
Logger.LogError(new Exception($"Graph rendering completed with error code {executionResult.ExitCode}"));
}
}
public void Dump(string filePath)
{
string ext = Path.GetExtension(filePath);
if (ext.Length > 0)
{
ext = ext.Substring(1);
}
GraphvizOutputFormat outputFormat = OutputFormat;
string imagePath = filePath;
bool appendExt = false;
if (OutputFormat == GraphvizOutputFormat.None)
{
if (!Enum.TryParse(ext, true, out outputFormat))
{
outputFormat = GraphvizOutputFormat.Png;
imagePath = imagePath + "." + outputFormat.ToString().ToLowerInvariant();
appendExt = true;
}
}
else
{
string outputFormatString = OutputFormat.ToString().ToLowerInvariant();
if (!filePath.EndsWith(outputFormatString))
{
imagePath = imagePath + "." + outputFormatString;
appendExt = true;
}
}
string dotFilePath;
if (SaveDot)
{
dotFilePath = appendExt ? filePath + ".dot" : Path.ChangeExtension(filePath, "dot");
}
else
{
dotFilePath = Path.GetTempFileName();
}
File.WriteAllText(dotFilePath, DotGraph);
var process = Process.Start(new ProcessStartInfo
{
FileName = GraphvizPath,
Arguments = $"\"{dotFilePath}\" -T{outputFormat.ToString().ToLowerInvariant()} -o \"{imagePath}\"",
UseShellExecute = false,
CreateNoWindow = true,
RedirectStandardOutput = true,
RedirectStandardError = true
});
process.WaitForExit();
if (!SaveDot)
{
File.Delete(dotFilePath);
}
var errors = process.StandardError.ReadToEnd();
if (process.ExitCode != 0 || errors != "")
{
throw new Exception($"Error while graph rendering. Errors: {errors}");
}
}
