public static int Compress(ReadOnlySpan <byte> read, Span <byte> w, CompressTask task, int cur = 0)
{
DmadataRecord dmadataRec = GetDmadataRec(read, task.Dmadata);
var dmadata = GetDmadataRecords(read, task.Dmadata);
for (int i = 0; i < dmadata.Count; i++)
{
if (i % 50 == 0)
{
Console.WriteLine($"File {i}");
}
var dmarec = dmadata[i];
FileAddress vrom = dmarec.VRom;
FileAddress rom = dmarec.Rom;
if (rom.Start < 0)
{
continue;
}
ReadOnlySpan <byte> file = read.Slice(rom.Start, vrom.Size);
//if file should be compressed
if (!task.Exclusions.Contains(i))
{
int size = Yaz.Encode(file.ToArray(), vrom.Size, out byte[] comp);
if (size > 0)
{
Span <byte> c = new Span <byte>(comp, 0, size);
c.CopyTo(w.Slice(cur, size));
dmarec.Rom = new FileAddress(cur, cur + size);
cur += size;
continue;
}
}
file.CopyTo(w.Slice(cur, vrom.Size));
dmarec.Rom = new FileAddress(cur, 0);
cur += vrom.Size;
}
WriteDmadataRecords(w.Slice(dmadataRec.Rom.Start, dmadataRec.VRom.Size), dmadata);
return(cur);
}
static List <DmadataRecord> GetDmadataRecords(ReadOnlySpan <byte> read)
{
List <DmadataRecord> result = new List <DmadataRecord>();
DmadataRecord record;
for (int i = 0; i < read.Length; i += 0x10)
{
record = new DmadataRecord()
{
VRom = new FileAddress(EndianX.ConvertInt32(read, i + 0x0), EndianX.ConvertInt32(read, i + 0x4)),
Rom = new FileAddress(EndianX.ConvertInt32(read, i + 0x8), EndianX.ConvertInt32(read, i + 0xC))
};
if (record.VRom.End == 0)
{
break;
}
result.Add(record);
}
return(result);
}
public static string GetExclusions(ReadOnlySpan <byte> read, int dmadata)
{
DmadataRecord rec = GetDmadataRec(read, dmadata);
var records = GetDmadataRecords(read.Slice(rec.Rom.Start, rec.VRom.Size));
StringBuilder sb = new StringBuilder();
sb.AppendLine($"{dmadata:X8}");
for (int i = 0; i < records.Count; i++)
{
var record = records[i];
if (record.VRom.End != 0 &&
record.Rom.End == 0)
{
sb.AppendLine($"{i}");
}
}
return(sb.ToString());
}
