private List <Entry> OpenNexton(ArcView lst, long max_offset)
{
uint key = lst.View.ReadByte(3); // guess xor key
if (0 == key)
{
return(null);
}
key |= key << 8;
key |= key << 16;
int count = (int)(lst.View.ReadUInt32(0) ^ key);
if (count <= 0 || (4 + count * 0x4c) > lst.MaxOffset)
{
return(null);
}
var cp932 = Encodings.cp932.WithFatalFallback();
var dir = new List <Entry> (count);
uint index_offset = 4;
for (int i = 0; i < count; ++i)
{
string name = ReadName(lst, index_offset + 8, 0x40, key, cp932);
if (0 == name.Length)
{
return(null);
}
var entry = new NextonEntry {
Name = name,
Offset = lst.View.ReadUInt32(index_offset) ^ key,
Size = lst.View.ReadUInt32(index_offset + 4) ^ key,
};
if (!entry.CheckPlacement(max_offset))
{
return(null);
}
int type = lst.View.ReadInt32(index_offset + 0x48);
if (type >= 0 && type < TypeExt.Length)
{
entry.Name = Path.ChangeExtension(name, TypeExt[type]);
if (2 == type || 3 == type)
{
entry.Type = "image";
}
else if (4 == type || 5 == type)
{
entry.Type = "audio";
}
else if (1 == type)
{
entry.Type = "script";
entry.Key = (byte)(key + 1);
}
}
dir.Add(entry);
index_offset += 0x4c;
}
return(dir);
}
private List<Entry> OpenNexton(ArcView lst, long max_offset)
{
uint key = lst.View.ReadByte (3); // guess xor key
if (0 == key)
return null;
key |= key << 8;
key |= key << 16;
int count = (int)(lst.View.ReadUInt32 (0) ^ key);
if (count <= 0 || (4 + count*0x4c) > lst.MaxOffset)
return null;
var cp932 = Encodings.cp932.WithFatalFallback();
var dir = new List<Entry> (count);
uint index_offset = 4;
for (int i = 0; i < count; ++i)
{
string name = ReadName (lst, index_offset+8, 0x40, key, cp932);
if (0 == name.Length)
return null;
var entry = new NextonEntry {
Name = name,
Offset = lst.View.ReadUInt32 (index_offset) ^ key,
Size = lst.View.ReadUInt32 (index_offset+4) ^ key,
};
if (!entry.CheckPlacement (max_offset))
return null;
int type = lst.View.ReadInt32 (index_offset+0x48);
if (type >= 0 && type < TypeExt.Length)
{
entry.Name = Path.ChangeExtension (name, TypeExt[type]);
if (2 == type || 3 == type)
entry.Type = "image";
else if (4 == type || 5 == type)
entry.Type = "audio";
else if (1 == type)
{
entry.Type = "script";
entry.Key = (byte)(key + 1);
}
}
dir.Add (entry);
index_offset += 0x4c;
}
return dir;
}
