public static void Encode(
string original, string encoded, int chuckSize, LZ4Settings settings)
{
var frameInfo = new LZ4Descriptor(
null, false, settings.Chaining, false, null, settings.BlockSize);
using (var input = File.OpenRead(original))
using (var output = File.Create(encoded))
using (var encode = new LZ4EncoderStream(
output, frameInfo, i => LZ4Encoder.Create(
i.Chaining, settings.Level, i.BlockSize, settings.ExtraBlocks)))
{
var buffer = new byte[chuckSize];
while (true)
{
var read = input.Read(buffer, 0, buffer.Length);
if (read == 0)
{
break;
}
encode.Write(buffer, 0, read);
}
}
}
public static LZ4Settings ParseSettings(string options)
{
var result = new LZ4Settings {
Chaining = false
};
foreach (var option in options.Split(' '))
{
switch (option)
{
case "-1":
result.Level = LZ4Level.L00_FAST;
break;
case "-9":
result.Level = LZ4Level.L09_HC;
break;
case "-11":
result.Level = LZ4Level.L11_OPT;
break;
case "-12":
result.Level = LZ4Level.L12_MAX;
break;
case "-BD":
result.Chaining = true;
break;
case "-BX":
// ignored to be implemented
break;
case "-B4":
result.BlockSize = Mem.K64;
break;
case "-B5":
result.BlockSize = Mem.K256;
break;
case "-B6":
result.BlockSize = Mem.M1;
break;
case "-B7":
result.BlockSize = Mem.M4;
break;
default:
throw new NotImplementedException($"Option '{option}' not recognized");
}
}
return(result);
}
