mirror of
https://github.com/crskycode/GARbro.git
synced 2024-12-25 12:24:12 +08:00
261 lines
9.4 KiB
C#
261 lines
9.4 KiB
C#
//! \file ArcEPK.cs
|
|
//! \date Tue Sep 20 00:07:35 2016
|
|
//! \brief TamaSoft resource archive.
|
|
//
|
|
// Copyright (C) 2016 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.Collections.Generic;
|
|
using System.ComponentModel.Composition;
|
|
using System.IO;
|
|
|
|
namespace GameRes.Formats.Tama
|
|
{
|
|
internal class EpkEntry : Entry
|
|
{
|
|
public int ArcNumber;
|
|
}
|
|
|
|
internal class EpkArchive : ArcFile
|
|
{
|
|
public readonly IReadOnlyList<ArcView> Parts;
|
|
|
|
public EpkArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, IReadOnlyList<ArcView> parts)
|
|
: base (arc, impl, dir)
|
|
{
|
|
Parts = parts;
|
|
}
|
|
|
|
bool _epk_disposed = false;
|
|
protected override void Dispose (bool disposing)
|
|
{
|
|
if (_epk_disposed)
|
|
return;
|
|
|
|
if (disposing)
|
|
{
|
|
foreach (var arc in Parts)
|
|
arc.Dispose();
|
|
}
|
|
_epk_disposed = true;
|
|
base.Dispose (disposing);
|
|
}
|
|
}
|
|
|
|
[Export(typeof(ArchiveFormat))]
|
|
public class PakOpener : ArchiveFormat
|
|
{
|
|
public override string Tag { get { return "EPK"; } }
|
|
public override string Description { get { return "TamaSoft ADV system resource archive"; } }
|
|
public override uint Signature { get { return 0x204B5045; } } // 'EPK '
|
|
public override bool IsHierarchic { get { return true; } }
|
|
public override bool CanCreate { get { return false; } }
|
|
|
|
public override ArcFile TryOpen (ArcView file)
|
|
{
|
|
if (!file.View.AsciiEqual (0, "EPK "))
|
|
return null;
|
|
uint index_size = file.View.ReadUInt32 (4) - 0x20;
|
|
int count = file.View.ReadInt32 (0x18);
|
|
if (!IsSaneCount (count) || index_size >= file.MaxOffset)
|
|
return null;
|
|
uint index_offset = 0x20;
|
|
if (index_size > file.View.Reserve (index_offset, index_size))
|
|
return null;
|
|
|
|
var arc_list = new List<Entry>();
|
|
var arc_dir = VFS.GetDirectoryName (file.Name);
|
|
var arc_name = Path.GetFileNameWithoutExtension (file.Name);
|
|
for (int i = 1; i < 10; ++i)
|
|
{
|
|
var part_name = string.Format ("{0}.e{1:D02}", arc_name, i);
|
|
part_name = VFS.CombinePath (arc_dir, part_name);
|
|
if (!VFS.FileExists (part_name))
|
|
break;
|
|
arc_list.Add (VFS.FindFile (part_name));
|
|
}
|
|
|
|
var name_buffer = new byte[0x40];
|
|
var dir = new List<Entry> (count);
|
|
for (int i = 0; i < count; ++i)
|
|
{
|
|
uint name_offset = file.View.ReadUInt32 (index_offset+8);
|
|
int name_length = file.View.ReadInt32 (name_offset);
|
|
if (name_length <= 0 || name_length >= index_size)
|
|
return null;
|
|
if (name_length > name_buffer.Length)
|
|
name_buffer = new byte[name_length];
|
|
file.View.Read (name_offset+4, name_buffer, 0, (uint)name_length);
|
|
for (int j = 0; j < name_length; ++j)
|
|
name_buffer[j] ^= 0xFF;
|
|
var name = Encodings.cp932.GetString (name_buffer, 0, name_length);
|
|
|
|
var entry = FormatCatalog.Instance.Create<EpkEntry> (name);
|
|
entry.Offset = file.View.ReadInt64 (index_offset+0x10);
|
|
entry.Size = file.View.ReadUInt32 (index_offset+0x18);
|
|
dir.Add (entry);
|
|
index_offset += 0x28;
|
|
}
|
|
var arc_set = new List<ArcView> (arc_list.Count);
|
|
try
|
|
{
|
|
long max_offset = file.MaxOffset;
|
|
var bounds = new List<long> (arc_list.Count+1);
|
|
bounds.Add (max_offset);
|
|
foreach (var arc_entry in arc_list)
|
|
{
|
|
var arc_file = VFS.OpenView (arc_entry);
|
|
arc_set.Add (arc_file);
|
|
max_offset += arc_file.MaxOffset;
|
|
bounds.Add (max_offset);
|
|
}
|
|
foreach (EpkEntry entry in dir)
|
|
{
|
|
if (!entry.CheckPlacement (max_offset))
|
|
return null;
|
|
entry.ArcNumber = bounds.FindIndex (x => x > entry.Offset);
|
|
if (entry.ArcNumber > 0)
|
|
entry.Offset -= bounds[entry.ArcNumber-1];
|
|
}
|
|
var arc = new EpkArchive (file, this, dir, arc_set);
|
|
arc_set = null;
|
|
return arc;
|
|
}
|
|
finally
|
|
{
|
|
if (arc_set != null)
|
|
{
|
|
foreach (var arc in arc_set)
|
|
arc.Dispose();
|
|
}
|
|
}
|
|
}
|
|
|
|
public override Stream OpenEntry (ArcFile arc, Entry entry)
|
|
{
|
|
var earc = arc as EpkArchive;
|
|
var eent = entry as EpkEntry;
|
|
if (null == earc || null == eent)
|
|
return base.OpenEntry (arc, entry);
|
|
long entry_offset = entry.Offset;
|
|
ArcView file = arc.File;
|
|
if (eent.ArcNumber > 0)
|
|
file = earc.Parts[eent.ArcNumber-1];
|
|
if (entry_offset + entry.Size <= file.MaxOffset)
|
|
return file.CreateStream (entry_offset, entry.Size);
|
|
uint first_part_size = (uint)(file.MaxOffset - entry_offset);
|
|
var begin = file.CreateStream (entry_offset, first_part_size);
|
|
var end = earc.Parts[eent.ArcNumber].CreateStream (0, entry.Size - first_part_size);
|
|
return new ConcatStream (begin, end);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Concatenation of the two input Streams.
|
|
/// </summary>
|
|
public class ConcatStream : InputProxyStream
|
|
{
|
|
Stream m_second;
|
|
long m_position;
|
|
Stream m_active;
|
|
|
|
public ConcatStream (Stream first, Stream second) : base (first)
|
|
{
|
|
m_second = second;
|
|
m_position = 0;
|
|
m_active = first;
|
|
}
|
|
|
|
internal Stream First { get { return BaseStream; } }
|
|
internal Stream Second { get { return m_second; } }
|
|
|
|
public override bool CanSeek { get { return First.CanSeek && Second.CanSeek; } }
|
|
public override long Length { get { return First.Length + Second.Length; } }
|
|
public override long Position
|
|
{
|
|
get { return m_position; }
|
|
set { m_position = value; }
|
|
}
|
|
|
|
public override int Read (byte[] buffer, int offset, int count)
|
|
{
|
|
if (First.CanSeek)
|
|
{
|
|
if (m_position >= First.Length)
|
|
{
|
|
m_active = Second;
|
|
m_active.Position = m_position - First.Length;
|
|
}
|
|
else
|
|
{
|
|
m_active = First;
|
|
m_active.Position = m_position;
|
|
}
|
|
}
|
|
int total_read = 0;
|
|
while (count > 0)
|
|
{
|
|
int read = m_active.Read (buffer, offset, count);
|
|
if (0 == read)
|
|
break;
|
|
total_read += read;
|
|
m_position += read;
|
|
offset += read;
|
|
count -= read;
|
|
}
|
|
if (count > 0 && m_active != Second)
|
|
{
|
|
m_active = Second;
|
|
if (m_active.CanSeek)
|
|
m_active.Position = 0;
|
|
int read = m_active.Read (buffer, offset, count);
|
|
m_position += read;
|
|
total_read += read;
|
|
}
|
|
return total_read;
|
|
}
|
|
|
|
public override long Seek (long offset, SeekOrigin origin)
|
|
{
|
|
if (SeekOrigin.Begin == origin)
|
|
Position = offset;
|
|
else if (SeekOrigin.Current == origin)
|
|
Position = m_position + offset;
|
|
else
|
|
Position = Length + offset;
|
|
|
|
return m_position;
|
|
}
|
|
|
|
bool _disposed = false;
|
|
protected override void Dispose (bool disposing)
|
|
{
|
|
if (!_disposed)
|
|
{
|
|
if (disposing)
|
|
m_second.Dispose();
|
|
_disposed = true;
|
|
base.Dispose (disposing);
|
|
}
|
|
}
|
|
}
|
|
}
|