public static bool ReadFileHeader(Stream stream, out AutcpFileHeader fileHeader)
{
try
{
var buffer = new byte[FileHeaderSize];
stream.Seek(0, SeekOrigin.Begin);
stream.Read(buffer, 0, FileHeaderSize);
var gch = GCHandle.Alloc(buffer, GCHandleType.Pinned);
fileHeader = Marshal.PtrToStructure <AutcpFileHeader>(gch.AddrOfPinnedObject());
gch.Free();
// test for valid data
var sig = Encoding.UTF8.GetString(fileHeader.signature, 0, fileHeader.signature.Length);
var isSuccessful = sig == "AUTCP";
return(isSuccessful);
}
catch (Exception ex)
{
fileHeader = new AutcpFileHeader();
return(false);
}
}
public static bool AddHeader(Stream stream)
{
var fileHeader = new AutcpFileHeader
{
signature = Encoding.UTF8.GetBytes("AUTCP"),
version = FormatVersion,
compatability = FormatCompatabilityVersion
};
return(WriteFileHeader(stream, fileHeader));
}
public static bool AddHeader(Stream stream)
{
var fileHeader = new AutcpFileHeader
{
signature = Encoding.UTF8.GetBytes("AUTCP"),
version = FormatVersion,
compatability = FormatCompatabilityVersion
};
return WriteFileHeader(stream, fileHeader);
}
public static bool WriteFileHeader(Stream stream, AutcpFileHeader fileHeader)
{
try
{
var buffer = new byte[FileHeaderSize];
var gch = GCHandle.Alloc(buffer, GCHandleType.Pinned);
Marshal.StructureToPtr(fileHeader, gch.AddrOfPinnedObject(), false);
gch.Free();
stream.Seek(0, SeekOrigin.Begin);
stream.Write(buffer, 0, FileHeaderSize);
return(true);
}
catch
{
return(false);
}
}
public static bool WriteFileHeader(Stream stream, AutcpFileHeader fileHeader)
{
try
{
var buffer = new byte[FileHeaderSize];
var gch = GCHandle.Alloc(buffer, GCHandleType.Pinned);
Marshal.StructureToPtr(fileHeader, gch.AddrOfPinnedObject(), false);
gch.Free();
stream.Seek(0, SeekOrigin.Begin);
stream.Write(buffer, 0, FileHeaderSize);
return true;
}
catch
{
return false;
}
}
public static bool ReadFileHeader(Stream stream, out AutcpFileHeader fileHeader)
{
try
{
var buffer = new byte[FileHeaderSize];
stream.Seek(0, SeekOrigin.Begin);
stream.Read(buffer, 0, FileHeaderSize);
var gch = GCHandle.Alloc(buffer, GCHandleType.Pinned);
fileHeader = Marshal.PtrToStructure<AutcpFileHeader>(gch.AddrOfPinnedObject());
gch.Free();
// test for valid data
var sig = Encoding.UTF8.GetString(fileHeader.signature, 0, fileHeader.signature.Length);
var isSuccessful = sig == "AUTCP";
return isSuccessful;
}
catch (Exception ex)
{
fileHeader = new AutcpFileHeader();
return false;
}
}