private int ReadFileIndexerOfName(byte[] buffer, int offset, VpkContainedFileDescription fileNode)
{
fileNode.meta.crc32 = BitConverter.ToUInt32(buffer, offset);
offset += 4;
fileNode.meta.preloadLength = BitConverter.ToInt16(buffer, offset);
Debug.WriteLineIf(fileNode.meta.preloadLength != 0, fileNode.meta.preloadLength);
offset += 2;
fileNode.meta.archieveIndex = BitConverter.ToInt16(buffer, offset);
offset += 2;
fileNode.meta.archieveOffset = BitConverter.ToInt32(buffer, offset);
offset += 4;
fileNode.meta.fileLength = BitConverter.ToInt32(buffer, offset);
offset += 4;
ushort suffix = BitConverter.ToUInt16(buffer, offset);
if (suffix != ContainedFileMeta.Suffix)
{
Debug.WriteLine(String.Format(
"ERROR: File index parsing: Unexpected suffix while reading file meta from index, expecting {0:X}, got {1:X}.",
ContainedFileMeta.Suffix, suffix));
throw new VpkException(VpkException.ExceptionReason.Unknown);
}
offset += 2;
if (fileNode.meta.archieveIndex == 0x7fff)
{
fileNode.meta.archieveOffset += header.headerSize + header.directorySize;
}
fileNode.preload = new byte[fileNode.meta.preloadLength];
Array.Copy(buffer, offset, fileNode.preload, 0, fileNode.meta.preloadLength);
offset += fileNode.meta.preloadLength;
return(offset);
}
public VpkContainedFileStream(VpkContainedFileDescription desc, FileInfo fileInfo)
{
this.desc = desc;
fileStream = fileInfo.OpenRead();
fileStream.Position = desc.meta.archieveOffset;
position = 0;
}
public byte[] GetContainedFileBytes(VpkContainedFileDescription description)
{
var len = description.meta.fileLength + description.meta.preloadLength;
using (var stream = new VpkContainedFileStream(description, fileInfo)) {
byte[] arr = new byte[len];
stream.Read(arr, 0, len);
return(arr);
}
}
public string GetContainedFileText(VpkContainedFileDescription description)
{
using (var reader = new StreamReader(
// This way. The file can be in UTF8 with or w/o BOM and UTF16.
// https://stackoverflow.com/questions/3545402/any-difference-between-file-readalltext-and-using-a-streamreader-to-read-file
// https://stackoverflow.com/questions/11701341/encoding-utf8-getstring-doesnt-take-into-account-the-preamble-bom
new VpkContainedFileStream(description, fileInfo), Encoding.UTF8, true)) {
return(reader.ReadToEnd());
}
}
private int ReadUnderPath(byte[] buffer, int offset, Dictionary <string, VpkContainedFileDescription> pathNode)
{
int maxLen = buffer.Length;
while (offset < maxLen)
{
var name = CStringUtil.ReadCString(buffer, ref offset);
if (name.Length == 0)
{
break;
}
//name = JoinPath(path, name, extensionName);
var fileNode = new VpkContainedFileDescription(name);
pathNode[name] = fileNode;
offset = ReadFileIndexerOfName(buffer, offset, fileNode);
}
return(offset);
}
