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support old INT archives with different index entry size.

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morkt 2015-11-29 07:29:45 +04:00
parent 5f8fd31d20
commit dea492a27f
1 changed files with 32 additions and 13 deletions
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45
ArcFormats/CatSystem/ArcINT.cs
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@ -128,6 +128,8 @@ namespace GameRes.Formats.CatSystem
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return true; } }
static readonly byte[] NameSizes = { 0x20, 0x40 };
public override ArcFile TryOpen (ArcView file)
{
int entry_count = file.View.ReadInt32 (4);
@ -141,20 +143,38 @@ namespace GameRes.Formats.CatSystem
return OpenEncrypted (file, entry_count, key.Value);
}
long current_offset = 8;
var dir = new List<Entry> (entry_count);
for (int i = 0; i < entry_count; ++i)
foreach (var name_length in NameSizes)
{
string name = file.View.ReadString (current_offset, 0x40);
var entry = FormatCatalog.Instance.Create<Entry> (name);
entry.Offset = file.View.ReadUInt32 (current_offset+0x40);
entry.Size = file.View.ReadUInt32 (current_offset+0x44);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
current_offset += 0x48;
try
{
long current_offset = 8;
for (int i = 0; i < entry_count; ++i)
{
string name = file.View.ReadString (current_offset, name_length);
if (0 == name.Length)
{
dir.Clear();
break;
}
var entry = FormatCatalog.Instance.Create<Entry> (name);
current_offset += name_length;
entry.Offset = file.View.ReadUInt32 (current_offset);
entry.Size = file.View.ReadUInt32 (current_offset+4);
if (entry.Offset <= current_offset || !entry.CheckPlacement (file.MaxOffset))
{
dir.Clear();
break;
}
dir.Add (entry);
current_offset += 8;
}
if (dir.Count > 0)
return new ArcFile (file, this, dir);
}
catch { /* ignore parse errors */ }
}
return new ArcFile (file, this, dir);
return null;
}
private ArcFile OpenEncrypted (ArcView file, int entry_count, uint main_key)
@ -195,8 +215,7 @@ namespace GameRes.Formats.CatSystem
private Stream OpenEncryptedEntry (FrontwingArchive arc, Entry entry)
{
byte[] data = new byte[entry.Size];
arc.File.View.Read (entry.Offset, data, 0, entry.Size);
byte[] data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
arc.Encryption.Decipher (data, data.Length/8*8);
return new MemoryStream (data);
}