static uint ReadUInt32(IBinaryReader reader)
{
try {
return(reader.Read7BitEncodedUInt32());
}
catch {
throw new ResourceReaderException("Invalid encoded int32");
}
}
static uint readUInt32(IBinaryReader reader)
{
try {
return reader.Read7BitEncodedUInt32();
}
catch {
throw new ResourceReaderException("Invalid encoded int32");
}
}
protected static byte[] Decompress(byte[] decrypted, IBinaryReader reader, byte[] key, int keyMod)
{
int destIndex = 0;
while (reader.Position < reader.Length)
{
if (destIndex >= decrypted.Length)
{
break;
}
byte flags = reader.ReadByte();
for (int mask = 1; mask != 0x100; mask <<= 1)
{
if (reader.Position >= reader.Length)
{
break;
}
if (destIndex >= decrypted.Length)
{
break;
}
if ((flags & mask) != 0)
{
int displ = (int)reader.Read7BitEncodedUInt32();
int size = (int)reader.Read7BitEncodedUInt32();
Copy(decrypted, destIndex - displ, decrypted, destIndex, size);
destIndex += size;
}
else
{
byte b = reader.ReadByte();
if (key != null)
{
b ^= key[destIndex % keyMod];
}
decrypted[destIndex++] = b;
}
}
}
return(decrypted);
}
/// <summary>
/// Reads a 7-bit encoded integer
/// </summary>
/// <param name="reader">this</param>
/// <returns>The decoded integer</returns>
public static int Read7BitEncodedInt32(this IBinaryReader reader)
{
return((int)reader.Read7BitEncodedUInt32());
}
static byte[] Decompress(IBinaryReader reader, byte[] key, int keyMod)
{
return(Decompress(new byte[reader.Read7BitEncodedUInt32()], reader, key, keyMod));
}
protected static byte[] Decompress(byte[] decrypted, IBinaryReader reader, byte[] key, int keyMod) {
int destIndex = 0;
while (reader.Position < reader.Length) {
if (destIndex >= decrypted.Length)
break;
byte flags = reader.ReadByte();
for (int mask = 1; mask != 0x100; mask <<= 1) {
if (reader.Position >= reader.Length)
break;
if (destIndex >= decrypted.Length)
break;
if ((flags & mask) != 0) {
int displ = (int)reader.Read7BitEncodedUInt32();
int size = (int)reader.Read7BitEncodedUInt32();
Copy(decrypted, destIndex - displ, decrypted, destIndex, size);
destIndex += size;
}
else {
byte b = reader.ReadByte();
if (key != null)
b ^= key[destIndex % keyMod];
decrypted[destIndex++] = b;
}
}
}
return decrypted;
}
static byte[] Decompress(IBinaryReader reader, byte[] key, int keyMod) {
return Decompress(new byte[reader.Read7BitEncodedUInt32()], reader, key, keyMod);
}
