mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-30 23:04:12 +08:00
315 lines
12 KiB
C#
315 lines
12 KiB
C#
//! \file ArcSec5.cs
|
|
//! \date Fri Oct 23 18:10:06 2015
|
|
//! \brief Sas5 engine resource index file.
|
|
//
|
|
// Copyright (C) 2015 by morkt
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to
|
|
// deal in the Software without restriction, including without limitation the
|
|
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
// sell copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
// IN THE SOFTWARE.
|
|
//
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel.Composition;
|
|
using System.IO;
|
|
using GameRes.Utility;
|
|
using System.Text;
|
|
|
|
namespace GameRes.Formats.Sas5
|
|
{
|
|
[Export(typeof(ArchiveFormat))]
|
|
public class Sec5Opener : ArchiveFormat
|
|
{
|
|
public override string Tag { get { return "SEC5"; } }
|
|
public override string Description { get { return "SAS5 engine resource index file"; } }
|
|
public override uint Signature { get { return 0x35434553; } } // 'SEC5'
|
|
public override bool IsHierarchic { get { return false; } }
|
|
public override bool CanWrite { get { return false; } }
|
|
|
|
public override ArcFile TryOpen (ArcView file)
|
|
{
|
|
uint offset = 8;
|
|
var dir = new List<Entry>();
|
|
while (offset < file.MaxOffset)
|
|
{
|
|
string name = file.View.ReadString (offset, 4, Encoding.ASCII);
|
|
if ("ENDS" == name)
|
|
break;
|
|
uint section_size = file.View.ReadUInt32 (offset+4);
|
|
offset += 8;
|
|
var entry = new Entry {
|
|
Name = name,
|
|
Offset = offset,
|
|
Size = section_size,
|
|
};
|
|
dir.Add (entry);
|
|
offset += section_size;
|
|
}
|
|
if (dir.Count > 0)
|
|
return new ArcFile (file, this, dir);
|
|
return null;
|
|
}
|
|
|
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
|
{
|
|
if ("CODE" != entry.Name)
|
|
return arc.File.CreateStream (entry.Offset, entry.Size);
|
|
|
|
var code = new byte[entry.Size];
|
|
arc.File.View.Read (entry.Offset, code, 0, entry.Size);
|
|
DecryptCodeSection (code);
|
|
return new BinMemoryStream (code, entry.Name);
|
|
}
|
|
|
|
static void DecryptCodeSection (byte[] code)
|
|
{
|
|
byte key = 0;
|
|
for (int i = 0; i < code.Length; ++i)
|
|
{
|
|
int x = code[i] + 18;
|
|
code[i] ^= key;
|
|
key += (byte)x;
|
|
}
|
|
}
|
|
|
|
static internal Dictionary<string, Dictionary<int, Entry>> CurrentIndex;
|
|
|
|
static internal Dictionary<int, Entry> LookupIndex (string filename)
|
|
{
|
|
if (null == CurrentIndex)
|
|
CurrentIndex = FindSec5Resr (filename);
|
|
if (null == CurrentIndex)
|
|
return null;
|
|
Dictionary<int, Entry> arc_map = null;
|
|
CurrentIndex.TryGetValue (Path.GetFileName (filename), out arc_map);
|
|
return arc_map;
|
|
}
|
|
|
|
static internal Dictionary<string, Dictionary<int, Entry>> FindSec5Resr (string arc_name)
|
|
{
|
|
string dir_name = Path.GetDirectoryName (arc_name);
|
|
var match = Directory.GetFiles (dir_name, "*.sec5");
|
|
if (0 == match.Length)
|
|
{
|
|
string parent = Path.GetDirectoryName (dir_name);
|
|
if (!string.IsNullOrEmpty (parent))
|
|
match = Directory.GetFiles (parent, "*.sec5");
|
|
}
|
|
if (0 == match.Length)
|
|
return null;
|
|
using (var sec5 = new ArcView (match[0]))
|
|
{
|
|
if (!sec5.View.AsciiEqual (0, "SEC5"))
|
|
return null;
|
|
uint offset = 8;
|
|
while (offset < sec5.MaxOffset)
|
|
{
|
|
string id = sec5.View.ReadString (offset, 4, Encoding.ASCII);
|
|
if ("ENDS" == id)
|
|
break;
|
|
uint section_size = sec5.View.ReadUInt32 (offset+4);
|
|
offset += 8;
|
|
if ("RESR" == id)
|
|
{
|
|
using (var resr = sec5.CreateStream (offset, section_size))
|
|
return ReadResrSection (resr);
|
|
}
|
|
if ("RES2" == id)
|
|
{
|
|
using (var res2 = sec5.CreateStream (offset, section_size))
|
|
return ReadRes2Section (res2);
|
|
}
|
|
offset += section_size;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
static internal Dictionary<string, Dictionary<int, Entry>> ReadResrSection (Stream input)
|
|
{
|
|
using (var resr = new BinaryReader (input, Encodings.cp932, true))
|
|
{
|
|
int count = resr.ReadInt32();
|
|
if (0 == count)
|
|
return null;
|
|
var map = new Dictionary<string, Dictionary<int, Entry>> (StringComparer.InvariantCultureIgnoreCase);
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
string name = resr.BaseStream.ReadCString();
|
|
string type = resr.BaseStream.ReadCString();
|
|
string arc_type = resr.BaseStream.ReadCString();
|
|
int res_length = resr.ReadInt32();
|
|
var next_pos = resr.BaseStream.Position + res_length;
|
|
if (arc_type == "file-war" || arc_type == "file-iar")
|
|
{
|
|
string arc_name = resr.BaseStream.ReadCString();
|
|
int id = resr.ReadInt32();
|
|
var base_arc_name = Path.GetFileName (arc_name);
|
|
if (!map.ContainsKey (base_arc_name))
|
|
map[base_arc_name] = new Dictionary<int, Entry>();
|
|
var entry = new Entry
|
|
{
|
|
Name = name,
|
|
Type = type,
|
|
};
|
|
map[base_arc_name][id] = entry;
|
|
}
|
|
resr.BaseStream.Position = next_pos;
|
|
}
|
|
return map.Count > 0 ? map : null;
|
|
}
|
|
}
|
|
|
|
static internal Dictionary<string, Dictionary<int, Entry>> ReadRes2Section (Stream input)
|
|
{
|
|
using (var resr = new Res2Reader (input))
|
|
return resr.Read();
|
|
}
|
|
}
|
|
|
|
internal sealed class Res2Reader : IDisposable
|
|
{
|
|
BinaryReader m_resr;
|
|
byte[] m_strings;
|
|
Dictionary<int, string> m_string_cache = new Dictionary<int, string>();
|
|
|
|
public Res2Reader (Stream input)
|
|
{
|
|
m_resr = new BinaryReader (input, Encodings.cp932, true);
|
|
}
|
|
|
|
public Dictionary<string, Dictionary<int, Entry>> Read ()
|
|
{
|
|
int section_size = m_resr.ReadInt32();
|
|
m_strings = m_resr.ReadBytes (section_size);
|
|
if (m_strings.Length != section_size)
|
|
return null;
|
|
var map = new Dictionary<string, Dictionary<int, Entry>> (StringComparer.InvariantCultureIgnoreCase);
|
|
int count = m_resr.ReadInt32();
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
string name = ReadString();
|
|
string type = ReadString();
|
|
string arc_type = ReadString();
|
|
int param_count = ReadInteger();
|
|
string arc_name = null;
|
|
int? arc_index = null;
|
|
for (int j = 0; j < param_count; ++j)
|
|
{
|
|
string param_name = ReadString();
|
|
if ("path" == param_name)
|
|
arc_name = ReadString();
|
|
else if ("arc-index" == param_name)
|
|
arc_index = ReadInteger();
|
|
else
|
|
SkipObject();
|
|
}
|
|
if (!string.IsNullOrEmpty (arc_name) && arc_index != null)
|
|
{
|
|
arc_name = Path.GetFileName (arc_name);
|
|
if (!map.ContainsKey (arc_name))
|
|
map[arc_name] = new Dictionary<int, Entry>();
|
|
var entry = new Entry
|
|
{
|
|
Name = name,
|
|
Type = type,
|
|
};
|
|
map[arc_name][arc_index.Value] = entry;
|
|
}
|
|
}
|
|
return map.Count > 0 ? map : null;
|
|
}
|
|
|
|
string ReadString ()
|
|
{
|
|
int n = m_resr.ReadByte();
|
|
if (0x90 != (n & 0xF8))
|
|
throw new InvalidFormatException ("[ReadString] SEC5 deserialization error");
|
|
|
|
int offset = ReadNumber (n);
|
|
if (offset >= m_strings.Length)
|
|
throw new InvalidFormatException ("[ReadString] SEC5 deserialization error");
|
|
string s;
|
|
if (!m_string_cache.TryGetValue (offset, out s))
|
|
{
|
|
int str_length = LittleEndian.ToInt32 (m_strings, offset);
|
|
s = Encodings.cp932.GetString (m_strings, offset+4, str_length);
|
|
m_string_cache[offset] = s;
|
|
}
|
|
return s;
|
|
}
|
|
|
|
int ReadInteger ()
|
|
{
|
|
int n = m_resr.ReadByte();
|
|
if (0 != (n & 0xE0))
|
|
{
|
|
if (0x80 != (n & 0xF8))
|
|
throw new InvalidFormatException ("[ReadInteger] SEC5 deserialization error");
|
|
n = ReadNumber (n);
|
|
}
|
|
else
|
|
{
|
|
n = (n & 0xF) - (n & 0x10);
|
|
}
|
|
return n;
|
|
}
|
|
|
|
void SkipObject ()
|
|
{
|
|
int n = m_resr.ReadByte();
|
|
if (0 != (n & 0xE0))
|
|
ReadNumber (n);
|
|
}
|
|
|
|
int ReadNumber (int length_code)
|
|
{
|
|
int count = (length_code & 7) + 1;
|
|
if (count > 4)
|
|
throw new InvalidFormatException ("[ReadNumber] SEC5 deserialization error");
|
|
int n = 0;
|
|
int rank = 0;
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
int b = m_resr.ReadByte();
|
|
n |= b << rank;
|
|
rank += 8;
|
|
}
|
|
if (count <= 3)
|
|
{
|
|
int sign = n & (1 << (8 * count - 1));
|
|
if (sign != 0)
|
|
n -= sign << 1;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
#region IDisposable Members
|
|
bool _disposed = false;
|
|
public void Dispose ()
|
|
{
|
|
if (!_disposed)
|
|
{
|
|
m_resr.Dispose();
|
|
_disposed = true;
|
|
}
|
|
}
|
|
#endregion
|
|
}
|
|
}
|