GARbro-mirror/GameRes/GameRes.cs

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//! \file GameRes.cs
//! \date Mon Jun 30 20:12:13 2014
//! \brief game resources browser.
//
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// Copyright (C) 2014-2015 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.
//
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using System;
using System.IO;
using System.Collections.Generic;
using GameRes.Strings;
namespace GameRes
{
/// <summary>
/// Basic filesystem entry.
/// </summary>
public class Entry
{
public virtual string Name { get; set; }
public virtual string Type { get; set; }
public long Offset { get; set; }
public uint Size { get; set; }
public Entry ()
{
Type = "";
Offset = -1;
}
/// <summary>
/// Check whether entry lies within specified file bound.
/// </summary>
public bool CheckPlacement (long max_offset)
{
return Offset < max_offset && Size <= max_offset && Offset <= max_offset - Size;
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}
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/// <summary>
/// Change entry type to the type of resource <paramref name="res"/>.
/// Entry name extension is changed accordingly.
/// </summary>
public void ChangeType (IResource res)
{
if (null == res)
return;
Type = res.Type;
foreach (var ext in res.Extensions)
{
if (!string.IsNullOrEmpty (ext))
Name = Path.ChangeExtension (Name, ext);
break;
}
}
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}
public class PackedEntry : Entry
{
public uint UnpackedSize { get; set; }
public bool IsPacked { get; set; }
}
public abstract class IResource
{
/// <summary>Short tag sticked to resource (usually filename extension)</summary>
public abstract string Tag { get; }
/// <summary>Resource description (its source/inventor)</summary>
public abstract string Description { get; }
/// <summary>Resource type (image/archive/script)</summary>
public abstract string Type { get; }
/// <summary>First 4 bytes of the resource file as little-endian 32-bit integer,
/// or zero if it could vary.</summary>
public abstract uint Signature { get; }
/// <summary>Whether resource creation is supported by implementation.</summary>
public virtual bool CanWrite { get { return false; } }
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/// <summary>Signatures peculiar to the resource (the one above is also included here).</summary>
public IEnumerable<uint> Signatures { get; protected set; }
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/// <summary>Filename extensions peculiar to the resource.</summary>
public IEnumerable<string> Extensions { get; protected set; }
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/// <summary>Resource settings suitable for serialization.</summary>
public virtual ResourceScheme Scheme { get; set; }
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/// <summary>
/// Create empty Entry that corresponds to implemented resource.
/// </summary>
public EntryType Create<EntryType> () where EntryType : Entry, new()
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{
return new EntryType { Type = this.Type };
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}
protected IResource ()
{
Extensions = new string[] { GetDefaultExtension() };
Signatures = new uint[] { this.Signature };
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}
protected string GetDefaultExtension ()
{
var ext = Tag.ToLowerInvariant();
int slash = ext.IndexOf ('/');
if (slash != -1)
ext = ext.Substring (0, slash);
return ext;
}
public virtual ResourceOptions GetDefaultOptions ()
{
return null;
}
public virtual ResourceOptions GetOptions (object widget)
{
return GetDefaultOptions();
}
public virtual object GetCreationWidget ()
{
return null;
}
public virtual object GetAccessWidget ()
{
return null;
}
protected OptType GetOptions<OptType> (ResourceOptions res_options) where OptType : ResourceOptions
{
var options = res_options as OptType;
if (null == options)
options = this.GetDefaultOptions() as OptType;
return options;
}
protected OptType Query<OptType> (string notice) where OptType : ResourceOptions
{
var args = new ParametersRequestEventArgs { Notice = notice };
FormatCatalog.Instance.InvokeParametersRequest (this, args);
if (!args.InputResult)
throw new OperationCanceledException();
return GetOptions<OptType> (args.Options);
}
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}
public class ResourceOptions
{
}
[Serializable]
public class ResourceScheme
{
}
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public delegate void ParametersRequestEventHandler (object sender, ParametersRequestEventArgs e);
public class ParametersRequestEventArgs : EventArgs
{
/// <summary>
/// String describing request nature (encryption key etc).
/// </summary>
public string Notice { get; set; }
/// <summary>
/// Return value from ShowDialog()
/// </summary>
public bool InputResult { get; set; }
/// <summary>
/// Archive-specific options set by InputWidget.
/// </summary>
public ResourceOptions Options { get; set; }
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}
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public class InvalidFormatException : FileFormatException
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{
public InvalidFormatException() : base(garStrings.MsgInvalidFormat) { }
public InvalidFormatException (string msg) : base (msg) { }
}
public class UnknownEncryptionScheme : Exception
{
public UnknownEncryptionScheme() : base(garStrings.MsgUnknownEncryption) { }
public UnknownEncryptionScheme (string msg) : base (msg) { }
}
public class InvalidEncryptionScheme : Exception
{
public InvalidEncryptionScheme() : base(garStrings.MsgInvalidEncryption) { }
public InvalidEncryptionScheme (string msg) : base (msg) { }
}
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public class FileSizeException : Exception
{
public FileSizeException () : base (garStrings.MsgFileTooLarge) { }
public FileSizeException (string msg) : base (msg) { }
}
public class InvalidFileName : Exception
{
public string FileName { get; set; }
public InvalidFileName (string filename)
: this (filename, garStrings.MsgInvalidFileName)
{
}
public InvalidFileName (string filename, string message)
: base (message)
{
FileName = filename;
}
public InvalidFileName (string filename, Exception X)
: this (filename, garStrings.MsgInvalidFileName, X)
{
}
public InvalidFileName (string filename, string message, Exception X)
: base (message, X)
{
FileName = filename;
}
}
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}