public FileGraph ApplyFilterToFile(EmbeddedFile file, string filterName,
IParserOutput output)
{
if (file == null || filterName == null || output == null)
{
throw new ArgumentException("Invalid parameters specified.");
}
// lookup the filter with the specified name
DataFileDef filter = m_mapping.GetFilterByName(filterName);
if (filter == null)
{
output.HandleFatalError("The specified filter does not exist.");
}
FileGraph graph = new FileGraph(file.FileId);
try
{
// open the input file
file.PrepareFileForReading();
// create a root node in the graph
graph.RootNode = new GraphNode("Root node", NodeType.Complex, file.Position);
foreach (object filterObject in filter.Items)
{
DecodeEntry(graph.RootNode, filterObject, output, file);
}
graph.RootNode.FilePositionEnd = file.Position;
graph.UpdateEndPositionOfNodes();
}
catch (Exception ex)
{
output.HandleFatalError("Unexpected exception: " + ex.Message);
}
finally
{
file.FileReadingComplete();
}
return(graph);
}
/// <summary>
/// Displays the contents of the file
/// </summary>
/// <param name="highlightMinPos">Start position to highlight. Zero based.</param>
/// <param name="highlightMaxPos">End position to highlight. Zero based, upper bound inclusive.</param>
private void ShowFileContents(int highlightMinPos = -1, int highlightMaxPos = -1)
{
// obtain the data of the current file
byte[] fileData;
try
{
m_currentFile.PrepareFileForReading();
fileData = m_currentFile.FileData;
}
finally
{
m_currentFile.FileReadingComplete();
}
const int lineSize = 32; // amount of chars per line
int dataPos = 0;
int length = Math.Min(lineSize, fileData.Length);
StringBuilder sb = new StringBuilder();
int highLightRtfStart = -1;
int highLightRtfEnd = -1;
while (length > 0)
{
bool doHighLight = false;
for (int i = dataPos; i < dataPos + length; i++)
{
doHighLight = (i >= highlightMinPos) && (i <= highlightMaxPos);
if (doHighLight)
{
if (highLightRtfStart < 0)
{
highLightRtfStart = i;
highLightRtfEnd = i;
}
else
{
highLightRtfEnd++;
}
}
sb.Append(fileData[i].ToString("X2"));
sb.Append(' ');
}
//sb.Append("\t\t");
//for (int i = dataPos; i < dataPos + length; i++)
//{
// sb.Append(Convert.ToChar(fileData[i]));
//}
dataPos += length;
length = Math.Min(lineSize, fileData.Length - dataPos);
// add newline
//sb.Append(Environment.NewLine);
}
// set text
rtbHex.Clear();
rtbHex.ResetText();
rtbHex.Text = sb.ToString();
// highlight selection
if (highLightRtfStart >= 0 && highLightRtfEnd > highLightRtfStart)
{
// the selection is known as byte poitions. Convert these to text positions
// each byte is rendered as three characters (hex x 2 + space)
highLightRtfStart *= 3;
highLightRtfEnd *= 3;
rtbHex.Select(highLightRtfStart, highLightRtfEnd - highLightRtfStart - 1);
rtbHex.SelectionColor = Color.White;
rtbHex.SelectionBackColor = Color.Black;
}
// add line splits
if (fileData.Length > lineSize)
{
const int charsPerByte = 3;
int textSizePos = (fileData.Length / lineSize) * lineSize;
while (textSizePos > 0)
{
rtbHex.SelectionStart = (textSizePos * charsPerByte);
rtbHex.SelectionLength = 0;
rtbHex.SelectedText = Environment.NewLine;
textSizePos -= lineSize;
}
}
}
