GARbro-mirror/ArcFormats/DjSystem/ArcDAT.cs

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2018-03-12 11:14:03 +08:00
//! \file ArcDAT.cs
//! \date 2018 Mar 12
//! \brief DJSYSTEM resource archive.
//
// Copyright (C) 2018 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 System.Text.RegularExpressions;
namespace GameRes.Formats.DjSystem
{
[Export(typeof(ArchiveFormat))]
public class DatOpener : ArchiveFormat
{
public override string Tag { get { return "DAT/DJSYSTEM"; } }
public override string Description { get { return "DJSYSTEM engine resource archive"; } }
public override uint Signature { get { return 0x454C4946; } } // 'FILE'
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
static readonly Regex IndexEntryRe = new Regex (@"^(\S+)\t(\d+)\s*\t(\d+)");
public override ArcFile TryOpen (ArcView file)
{
if (!file.View.AsciiEqual (0, "FILECMB-DATA-LIST-IN\n"))
return null;
using (var input = file.CreateStream())
using (var index = new StreamReader (input, Encodings.cp932))
{
var dir = new List<Entry>();
index.ReadLine();
for (;;)
{
var line = index.ReadLine();
if (null == line || "LIST-END" == line)
break;
var match = IndexEntryRe.Match (line);
if (!match.Success)
return null;
var name = match.Groups[1].Value;
uint start = UInt32.Parse (match.Groups[2].Value);
uint end = UInt32.Parse (match.Groups[3].Value);
var entry = FormatCatalog.Instance.Create<Entry> (name);
entry.Offset = start;
entry.Size = end - start;
if (!entry.CheckPlacement (file.MaxOffset))
return null;
if (name.HasExtension (".vic"))
entry.Type = "audio";
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dir.Add (entry);
}
if (0 == dir.Count)
return null;
return new ArcFile (file, this, dir);
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
if (arc.File.View.AsciiEqual (entry.Offset, "DJCODE NLINE-"))
{
if (arc.File.View.AsciiEqual (entry.Offset+13, "ENCODE\n"))
{
var input = arc.File.CreateStream (entry.Offset+20, entry.Size-20);
return new XoredStream (input, 0xFF);
}
else if (arc.File.View.AsciiEqual (entry.Offset+13, "NO-ENCODE\n"))
{
var data = arc.File.View.ReadBytes (entry.Offset+23, entry.Size-23);
for (int i = 0; i < data.Length; ++i)
{
if (data[i] == '\r' && i+1 < data.Length && data[i+1] == '\n')
++i;
else
data[i] ^= 0xFF;
}
return new BinMemoryStream (data, entry.Name);
}
}
return base.OpenEntry (arc, entry);
}
}
}