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(NsaOpener): added rare variation of archive layout.

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This commit is contained in:
morkt 2015-07-09 06:56:00 +04:00
parent 919ef22202
commit e60d52c9fa
1 changed files with 18 additions and 10 deletions
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28
ArcFormats/ArcNSA.cs
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@ -86,11 +86,8 @@ namespace GameRes.Formats.ONScripter
if (base_offset - cur_offset < 8)
return null;
var entry = new Entry
{
Name = Encodings.cp932.GetString (name_buffer, 0, name_len),
};
entry.Type = FormatCatalog.Instance.GetTypeFromName (entry.Name);
string name = Encodings.cp932.GetString (name_buffer, 0, name_len);
var entry = FormatCatalog.Instance.CreateEntry (name);
entry.Offset = Binary.BigEndian (file.View.ReadUInt32 (cur_offset)) + (long)base_offset;
entry.Size = Binary.BigEndian (file.View.ReadUInt32 (cur_offset+4));
if (!entry.CheckPlacement (file.MaxOffset))
@ -189,16 +186,29 @@ namespace GameRes.Formats.ONScripter
{
public override string Tag { get { return "NSA"; } }
public NsaOpener ()
{
Extensions = new string[] { "nsa", "dat" };
}
public override ArcFile TryOpen (ArcView file)
{
int num_of_files = Binary.BigEndian (file.View.ReadInt16 (0));
if (0 != file.View.ReadInt16 (0))
return ReadIndex (file, 0);
else
return ReadIndex (file, 2);
}
private ArcFile ReadIndex (ArcView file, uint base_offset)
{
int num_of_files = Binary.BigEndian (file.View.ReadInt16 (base_offset));
if (num_of_files <= 0)
return null;
uint base_offset = Binary.BigEndian (file.View.ReadUInt32 (2));
uint cur_offset = base_offset+6;
base_offset += Binary.BigEndian (file.View.ReadUInt32 (base_offset+2));
if (base_offset >= file.MaxOffset || base_offset < 15 * (uint)num_of_files)
return null;
uint cur_offset = 6;
var dir = new List<Entry>();
for (int i = 0; i < num_of_files; ++i)
{
@ -232,7 +242,6 @@ namespace GameRes.Formats.ONScripter
case 4: entry.CompressionType = Compression.NBZ; break;
default: entry.CompressionType = Compression.Unknown; break;
}
// Trace.WriteLine (string.Format ("[{0}] {1}", entry.CompressionType, entry.Name));
cur_offset += 13;
dir.Add (entry);
}
@ -354,7 +363,6 @@ namespace GameRes.Formats.ONScripter
}
}
/*
* ONScripter-EN decompression routines.
*