public Patch(string patchFile)
{
using (FileStream fs = new FileStream(patchFile, FileMode.Open, FileAccess.Read))
using (BinaryReader br = new BinaryReader(fs))
{
m_PTCH = br.ReadStruct<PTCH>();
//Debug.Assert(m_PTCH.m_magic.FourCC() == "PTCH");
if (m_PTCH.m_magic.FourCC() != "PTCH")
throw new InvalidDataException("not PTCH");
m_MD5 = br.ReadStruct<MD5_>();
Debug.Assert(m_MD5.m_magic.FourCC() == "MD5_");
m_XFRM = br.ReadStruct<XFRM>();
Debug.Assert(m_XFRM.m_magic.FourCC() == "XFRM");
m_type = m_XFRM.m_type.FourCC();
switch (m_type)
{
case "BSD0":
m_unpackedSize = br.ReadInt32();
m_compressedDiffStream = new MemoryStream(br.ReadRemaining());
BSDIFFParse();
break;
case "COPY":
m_compressedDiffStream = new MemoryStream(br.ReadRemaining());
return;
default:
Debug.Assert(false, String.Format("Unknown patch type: {0}", m_type));
break;
}
}
}
public Patch(string patchFile)
{
using (FileStream fs = new FileStream(patchFile, FileMode.Open, FileAccess.Read))
using (BinaryReader br = new BinaryReader(fs))
{
m_PTCH = br.ReadStruct <PTCH>();
Debug.Assert(m_PTCH.m_magic.FourCC() == "PTCH");
m_MD5 = br.ReadStruct <MD5_>();
Debug.Assert(m_MD5.m_magic.FourCC() == "MD5_");
m_XFRM = br.ReadStruct <XFRM>();
Debug.Assert(m_XFRM.m_magic.FourCC() == "XFRM");
m_type = m_XFRM.m_type.FourCC();
switch (m_type)
{
case "BSD0":
m_unpackedSize = br.ReadUInt32();
m_compressedDiff = br.ReadRemaining();
BSDIFFParse();
break;
case "COPY":
m_compressedDiff = br.ReadRemaining();
return;
default:
Debug.Assert(false, String.Format("Unknown patch type: {0}", m_type));
break;
}
}
}