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(PAC): archive index variation.

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This commit is contained in:
morkt 2018-04-20 21:17:16 +04:00
parent f3a7afab63
commit acaae80766
1 changed files with 20 additions and 29 deletions
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49
ArcFormats/Nexas/ArcPAC.cs
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@ -130,11 +130,8 @@ namespace GameRes.Formats.NeXAS
index_packed[i] = (byte)~index_packed[i];
var index = HuffmanDecode (index_packed, unpacked_size);
using (var input = new MemoryStream (index))
if (!ReadFromStream (input, 0x40))
return false;
return true;
using (var input = new BinMemoryStream (index))
return ReadFromStream (input, 0x40);
}
bool ReadOld ()
@ -142,37 +139,31 @@ namespace GameRes.Formats.NeXAS
using (var input = m_file.CreateStream())
{
input.Position = 0xC;
if (!ReadFromStream (input, 0x20))
return false;
if (ReadFromStream (input, 0x20))
return true;
input.Position = 0xC;
return ReadFromStream (input, 0x40);
}
return true;
}
byte[] m_name_buffer = new byte[MaxNameLength];
bool ReadFromStream (Stream input, int name_length)
bool ReadFromStream (IBinaryStream index, int name_length)
{
m_dir.Clear();
using (var index = new ArcView.Reader (input))
for (int i = 0; i < m_count; ++i)
{
for (int i = 0; i < m_count; ++i)
{
if (name_length != index.Read (m_name_buffer, 0, name_length))
return false;
var name = Binary.GetCString (m_name_buffer, 0, name_length);
if (string.IsNullOrWhiteSpace (name))
return false;
var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
entry.Offset = index.ReadUInt32();
entry.UnpackedSize = index.ReadUInt32();
entry.Size = index.ReadUInt32();
if (!entry.CheckPlacement (m_file.MaxOffset))
return false;
entry.IsPacked = m_pack_type != 0 && (m_pack_type != 4 || entry.Size != entry.UnpackedSize);
m_dir.Add (entry);
}
return true;
var name = index.ReadCString (name_length);
if (string.IsNullOrWhiteSpace (name))
return false;
var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
entry.Offset = index.ReadUInt32();
entry.UnpackedSize = index.ReadUInt32();
entry.Size = index.ReadUInt32();
if (!entry.CheckPlacement (m_file.MaxOffset))
return false;
entry.IsPacked = m_pack_type != 0 && (m_pack_type != 4 || entry.Size != entry.UnpackedSize);
m_dir.Add (entry);
}
return true;
}
}