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(PakOpener): fixed compressed entries handling (#37)

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This commit is contained in:
morkt 2016-10-14 12:35:56 +04:00
parent 5142cd0884
commit bf619c3f34
1 changed files with 22 additions and 37 deletions
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59
ArcFormats/NitroPlus/ArcNitro.cs
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@ -33,7 +33,7 @@ using GameRes.Utility;
namespace GameRes.Formats.NitroPlus
{
internal class PakEntry : Entry
internal class PakEntry : PackedEntry
{
public uint Key;
}
@ -102,13 +102,15 @@ namespace GameRes.Formats.NitroPlus
return null;
var name = Encodings.cp932.GetString (name_buf, 0, name_length);
var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
entry.Offset = base_offset + header.ReadUInt32();
entry.UnpackedSize = header.ReadUInt32();
entry.Size = header.ReadUInt32();
entry.IsPacked = header.ReadInt32() != 0;
uint psize = header.ReadUInt32();
entry.Offset = base_offset + header.ReadUInt32();
entry.UnpackedSize = header.ReadUInt32();
entry.Size = header.ReadUInt32();
entry.IsPacked = header.ReadInt32() != 0;
uint psize = header.ReadUInt32();
if (entry.IsPacked)
entry.Size = psize;
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
@ -159,21 +161,17 @@ namespace GameRes.Formats.NitroPlus
if (name_len != header.Read (name_buf, 0, name_len))
return null;
uint key = GetKey (name_buf, name_len);
uint offset = header.ReadUInt32() ^ key;
uint size = header.ReadUInt32() ^ key;
uint val1 = header.ReadUInt32() ^ key;
uint val2 = header.ReadUInt32() ^ key;
uint val3 = header.ReadUInt32() ^ key;
var entry = new PakEntry {
Name = Encodings.cp932.GetString (name_buf, 0, name_len),
Offset = base_offset+offset,
Size = size,
Key = key,
};
var name = Encodings.cp932.GetString (name_buf, 0, name_len);
var entry = FormatCatalog.Instance.Create<PakEntry> (name);
entry.Offset = (header.ReadUInt32() ^ key) + base_offset;
entry.UnpackedSize = (header.ReadUInt32() ^ key);
uint ignored = (header.ReadUInt32() ^ key);
entry.IsPacked = (header.ReadUInt32() ^ key) != 0;
uint packed_size = (header.ReadUInt32() ^ key);
entry.Key = key;
entry.Size = entry.IsPacked ? packed_size : entry.UnpackedSize;
if (!entry.CheckPlacement (file.MaxOffset))
return null;
entry.Type = FormatCatalog.Instance.GetTypeFromName (entry.Name);
dir.Add (entry);
}
return dir;
@ -194,27 +192,14 @@ namespace GameRes.Formats.NitroPlus
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var pak_entry = entry as PakEntry;
if (pak_entry != null)
if (pak_entry != null && !pak_entry.IsPacked)
return OpenV3Entry (arc, pak_entry);
Stream input = arc.File.CreateStream (entry.Offset, entry.Size);
var packed_entry = entry as PackedEntry;
if (packed_entry != null && packed_entry.IsPacked)
return UnpackV2Entry (arc, packed_entry);
return arc.File.CreateStream (entry.Offset, entry.Size);
}
private Stream UnpackV2Entry (ArcFile arc, PackedEntry entry)
{
var input = arc.File.CreateStream (entry.Offset, entry.Size);
try
{
return new ZLibStream (input, CompressionMode.Decompress);
}
catch
{
input.Dispose();
throw;
}
input = new ZLibStream (input, CompressionMode.Decompress);
return input;
}
private Stream OpenV3Entry (ArcFile arc, PakEntry entry)
@ -230,7 +215,7 @@ namespace GameRes.Formats.NitroPlus
key = Binary.RotR (key, 8);
}
if (enc_size == entry.Size)
return new MemoryStream (buf, false);
return new MemoryStream (buf);
return new PrefixStream (buf, arc.File.CreateStream (entry.Offset+enc_size, entry.Size-enc_size));
}
}