private void previewToolStripMenuItem_Click(object sender, EventArgs e)
{
var menuItem = sender as ToolStripMenuItem;
var source = (menuItem.Owner as ContextMenuStrip).SourceControl as TreeView;
DatFile df = source?.SelectedNode?.Tag as DatFile;
tbInfo.Text = null;
tbRaw.Text = null;
tbAscii.Text = null;
pbPreview.Image = null;
pbPreview.Tag = null;
// Select the clicked node
if (df != null)
{
StringBuilder sbInfo = new StringBuilder();
StringBuilder sbRaw = new StringBuilder();
StringBuilder sbAscii = new StringBuilder();
string extraInfo = null;
string contentDescription = null;
byte[] actualContent = null;
byte[] header1 = null;
byte[] header2 = null;
if (df.CompressionLevel == CompressionType.Default || df.CompressionLevel == CompressionType.Maximum)
{
// for compressed files, the header is only an unknown dword
header1 = _database.GetData(df.FileOffset + 8, 4);
var compressed = _database.GetData(df.FileOffset + 12, (int)df.Size1);
try
{
actualContent = Ionic.Zlib.ZlibStream.UncompressBuffer(compressed);
// inside the compressed content is the file id (dword), and an unknown dword
// of a very low (<256, typically) value.
header2 = actualContent.Take(8).ToArray();
actualContent = actualContent.Skip(8).ToArray();
var compressionRatio = 100 * (decimal)compressed.Length / (decimal)actualContent.Length;
contentDescription = $"Content was compressed by {compressionRatio:#} percent. Viewing decompressed content.";
}
catch (Exception ex)
{
byte[] fakeHeader = new byte[2];
contentDescription = "Unable to decompress content. Showing raw content instead.";
header1 = new byte[0];
actualContent = compressed;
}
}
else
{
// for uncompressed files, the header is the file id (dword) and the file size (dword)
header1 = _database.GetData(df.FileOffset + 8, 8);
actualContent = _database.GetData(df.FileOffset + 16, (int)BitConverter.ToUInt32(header1, 4));
}
sbInfo.AppendLine("File ID: " + df.FileId.ToString("X8"));
sbInfo.AppendLine("Offset: 0x" + df.FileOffset.ToString("X"));
sbInfo.AppendLine("File Date: " + df.FileDate);
sbInfo.AppendLine("Version: " + df.Version);
sbInfo.AppendLine("Compression: " + df.CompressionLevel.ToString());
sbInfo.AppendLine("File Size: " + df.Size1);
sbInfo.AppendLine("Dat Space Consumed: " + df.Size2);
sbInfo.AppendLine("Type: 0x" + df.FileType.ToString("X8"));
sbInfo.AppendLine("Unknown 1: 0x" + df.Unknown1.ToString("X8"));
sbInfo.AppendLine("Unknown 2: 0x" + df.Unknown2.ToString("X8"));
var fileType = DatFile.GetActualFileType(actualContent);
// raw data tab
if (!string.IsNullOrWhiteSpace(contentDescription))
{
sbRaw.AppendLine(contentDescription);
}
sbRaw.AppendLine().AppendLine($"File Header ({header1.Length} bytes)");
sbRaw.AppendLine(header1.PrintBytes());
if (header2 != null)
{
sbRaw.AppendLine().AppendLine($"Compressed Header ({header2.Length} bytes)");
sbRaw.AppendLine(header2.PrintBytes());
}
sbRaw.AppendLine().AppendLine($"Content ({actualContent.Length} bytes)");
sbRaw.AppendLine(actualContent.PrintBytes());
// ascii tab
sbAscii.AppendLine($"File Header ({header1.Length} bytes)");
sbAscii.AppendLine(header1.PrintAsciiBytes());
if (header2 != null)
{
sbAscii.AppendLine().AppendLine($"Compressed Header ({header2.Length} bytes)");
sbAscii.AppendLine(header2.PrintAsciiBytes());
}
sbAscii.AppendLine().AppendLine($"Content ({actualContent.Length} bytes)");
sbAscii.Append(actualContent.PrintAsciiBytes());
switch (fileType)
{
case KnownFileType.DXT1:
case KnownFileType.DXT3:
case KnownFileType.DXT5:
{
uint height = BitConverter.ToUInt32(actualContent, 0);
uint width = BitConverter.ToUInt32(actualContent, 4);
try
{
var dds = DdsFile.ConvertFromDxt(fileType, actualContent.Skip(16).ToArray(), width, height);
pbPreview.Image = DdsFile.DdsToBmp((int)width, (int)height, dds);
pbPreview.Tag = df;
sbInfo.AppendLine("Image Content available for preview (use Mouse Wheel to zoom).");
}
catch (Exception ex)
{
sbInfo.AppendLine("Image Content Detected but no preview is available.");
}
break;
}
break;
}
tbInfo.Text = sbInfo.ToString();
tbRaw.Text = sbRaw.ToString();
tbAscii.Text = sbAscii.ToString();
}
}