public List<ProgramResource> ReadResourceDirectory(ImageReader rdr)
{
const uint DIR_MASK = 0x80000000;
var flags = rdr.ReadUInt32();
var date = rdr.ReadUInt32();
var version = rdr.ReadUInt32();
var cNameEntries = rdr.ReadUInt16();
var cIdEntries = rdr.ReadUInt16();
var entries = new List<ProgramResource>();
for (int i = 0; i < cNameEntries; ++i)
{
var rvaName = rdr.ReadUInt32();
var rvaEntry = rdr.ReadUInt32();
var subRdr = new LeImageReader(imgLoaded, rvaResources + (rvaEntry & ~DIR_MASK));
if ((rvaEntry & DIR_MASK) == 0)
throw new BadImageFormatException();
if ((rvaName & DIR_MASK) != 0)
{
var e = new ProgramResourceGroup
{
//Name = ReadResourceString(rvaName),
Name = ReadResourceUtf16leString(rvaResources + (rvaName & ~DIR_MASK)),
};
e.Resources.AddRange(ReadNameDirectory(subRdr, 0));
entries.Add(e);
}
}
for (int i = 0; i < cIdEntries; ++i)
{
var id = rdr.ReadUInt32();
var rvaEntry = rdr.ReadUInt32();
var subRdr = new LeImageReader(imgLoaded, rvaResources + (rvaEntry & ~DIR_MASK));
if ((rvaEntry & DIR_MASK) == 0)
throw new BadImageFormatException();
var e = new ProgramResourceGroup
{
Name = GenerateResourceName(id),
};
e.Resources.AddRange(ReadNameDirectory(subRdr, id));
entries.Add(e);
}
return entries;
}
/// <summary>
/// Build icons out of the icon groups + icons.
/// </summary>
/// <param name="iconGroups"></param>
/// <param name="icons"></param>
private void PostProcessIcons(
ProgramResourceGroup iconGroups,
ProgramResourceGroup icons,
Dictionary<ushort, ProgramResourceInstance> iconIds,
List<ProgramResource> resources)
{
if (icons == null)
{
if (iconGroups != null)
resources.Remove(iconGroups);
return;
}
if (iconGroups == null)
{
if (icons == null)
resources.Remove(icons);
return;
}
foreach (ProgramResourceInstance iconGroup in iconGroups.Resources)
{
var r = new BinaryReader(new MemoryStream(iconGroup.Bytes));
var stm = new MemoryStream();
var w = new BinaryWriter(stm);
// Copy the group header
w.Write(r.ReadInt16());
w.Write(r.ReadInt16());
short dirEntries = r.ReadInt16();
w.Write(dirEntries);
var icIds = new List<Tuple<ushort, int>>();
for (int i = 0; i < dirEntries; ++i)
{
w.Write(r.ReadInt32());
w.Write(r.ReadInt32());
w.Write(r.ReadInt32());
var iconId = r.ReadUInt16();
w.Flush();
icIds.Add(Tuple.Create(iconId, (int)stm.Position));
w.Write(0);
}
foreach (var id in icIds)
{
var icon = iconIds[id.Item1];
var icOffset = (int) w.Seek(0, SeekOrigin.Current);
w.Seek(id.Item2, SeekOrigin.Begin);
w.Write(icOffset);
w.Seek(icOffset, SeekOrigin.Begin);
w.Write(icon.Bytes);
}
iconGroup.Bytes = stm.ToArray();
iconGroup.Type = "Win16_ICON";
}
iconGroups.Name = "ICON";
resources.Remove(icons);
}
void PostProcessBitmaps(ProgramResourceGroup bitmaps)
{
if (bitmaps == null)
return;
foreach (ProgramResourceInstance bitmap in bitmaps.Resources)
{
var stm = new MemoryStream();
var bw = new BinaryWriter(stm);
bw.Write('B');
bw.Write('M');
bw.Write(14 + bitmap.Bytes.Length);
bw.Write(0);
bw.Write(14);
bw.Write(bitmap.Bytes, 0, bitmap.Bytes.Length);
bw.Flush();
bitmap.Bytes = stm.ToArray();
}
}
/// <summary>
/// Reads in the NE image resources.
/// </summary>
//$REFACTOR: resource loading seems to want to belong in a separate file.
private void LoadResources(List<ProgramResource> resources)
{
var rsrcTable = new LeImageReader(RawImage, this.lfaNew + offRsrcTable);
var rdr = rsrcTable.Clone();
ushort size_shift = rdr.ReadLeUInt16();
ProgramResourceGroup bitmaps = null;
ProgramResourceGroup iconGroups = null;
ProgramResourceGroup icons = null;
var iconIds = new Dictionary<ushort, ProgramResourceInstance>();
ushort rsrcType = rdr.ReadLeUInt16();
while (rsrcType != 0)
{
var resGrp = new ProgramResourceGroup { Name = GetResourceType(rsrcType) };
if (rsrcType == NE_RSCTYPE_GROUP_ICON)
iconGroups = resGrp;
else if (rsrcType == NE_RSCTYPE_ICON)
icons = resGrp;
else if (rsrcType == NE_RSCTYPE_BITMAP)
bitmaps = resGrp;
ushort typeCount = rdr.ReadLeUInt16();
uint resLoader = rdr.ReadLeUInt32();
for (int count = typeCount; count > 0; --count)
{
ushort nameOffset = rdr.ReadLeUInt16();
ushort nameLength = rdr.ReadLeUInt16();
ushort nameFlags = rdr.ReadLeUInt16();
ushort nameId = rdr.ReadLeUInt16();
ushort nameHandle = rdr.ReadLeUInt16();
ushort nameUsage = rdr.ReadLeUInt16();
string resname;
if ((nameId & 0x8000) != 0)
{
resname = (nameId & ~0x8000).ToString();
}
else
{
resname = ReadByteLengthString(rsrcTable, nameId);
}
var offset = (uint)nameOffset << size_shift;
var rdrRsrc = new LeImageReader(base.RawImage, offset);
var rsrc = rdrRsrc.ReadBytes((uint)nameLength << size_shift);
var rsrcInstance = new ProgramResourceInstance
{
Name = resname,
Type = "Win16_" + resGrp.Name,
Bytes = rsrc,
};
resGrp.Resources.Add(rsrcInstance);
if (rsrcType == NE_RSCTYPE_ICON)
iconIds[(ushort)(nameId & ~0x8000)] = rsrcInstance;
}
resources.Add(resGrp);
rsrcType = rdr.ReadLeUInt16();
}
PostProcessIcons(iconGroups, icons, iconIds, resources);
PostProcessBitmaps(bitmaps);
}
public List<ProgramResource> ReadNameDirectory(ImageReader rdr, uint resourceType)
{
const uint DIR_MASK = 0x80000000;
var flags = rdr.ReadUInt32();
var date = rdr.ReadUInt32();
var version = rdr.ReadUInt32();
var cNameEntries = rdr.ReadUInt16();
var cIdEntries = rdr.ReadUInt16();
var entries = new List<ProgramResource>();
for (int i = 0; i < cNameEntries; ++i)
{
var rvaName = rdr.ReadUInt32();
var rvaEntry = rdr.ReadUInt32();
var subRdr = new LeImageReader(imgLoaded, rvaResources + (rvaEntry & ~DIR_MASK));
if ((rvaEntry & DIR_MASK) == 0)
throw new BadImageFormatException();
var e = new ProgramResourceGroup
{
Name = ReadResourceString(rvaName),
};
e.Resources.AddRange(ReadLanguageDirectory(subRdr, resourceType, e.Name));
entries.Add(e);
}
for (int i = 0; i < cIdEntries; ++i)
{
var id = rdr.ReadUInt32();
var rvaEntry = rdr.ReadUInt32();
var subRdr = new LeImageReader(imgLoaded, rvaResources + (rvaEntry & ~DIR_MASK));
if ((rvaEntry & DIR_MASK) == 0)
throw new BadImageFormatException();
var e = new ProgramResourceGroup
{
Name = id.ToString(),
};
e.Resources.AddRange(ReadLanguageDirectory(subRdr, resourceType, e.Name));
entries.Add(e);
}
return entries;
}
