/// <summary>
/// Loads a cache file from a stream.
/// </summary>
/// <param name="reader">The stream to read from.</param>
/// <param name="infoLoader">The BuildInfoLoader responsible for loading build information for the cache file.</param>
/// <param name="buildInfo">The variable to store build information to.</param>
/// <returns>The cache file that was loaded.</returns>
/// <exception cref="ArgumentException">Thrown if the cache file is invalid.</exception>
/// <exception cref="NotSupportedException">Thrown if the cache file's target engine is not supported.</exception>
public static ICacheFile LoadCacheFile(IReader reader, BuildInfoLoader infoLoader, out BuildInformation buildInfo)
{
// Set the reader's endianness based upon the file's header magic
reader.SeekTo(0);
byte[] headerMagic = reader.ReadBlock(4);
reader.Endianness = DetermineCacheFileEndianness(headerMagic);
// Load engine version info
CacheFileVersionInfo version = new CacheFileVersionInfo(reader);
if (version.Engine != EngineType.SecondGeneration && version.Engine != EngineType.ThirdGeneration)
throw new NotSupportedException("Engine not supported");
// Load build info
buildInfo = infoLoader.LoadBuild(version.BuildString);
if (buildInfo == null)
throw new NotSupportedException("Engine version \"" + version.BuildString + "\" not supported");
// Load the cache file depending upon the engine version
switch (version.Engine)
{
case EngineType.SecondGeneration:
return new SecondGenCacheFile(reader, buildInfo, version.BuildString);
case EngineType.ThirdGeneration:
return new ThirdGenCacheFile(reader, buildInfo, version.BuildString);
default:
throw new NotSupportedException("Engine not supported");
}
}
static void Main(string[] args)
{
if (args.Length != 2)
{
Console.WriteLine("Usage: mapexpand <map file> <page count>");
Console.WriteLine("Pages are multiples of 0x10000 bytes.");
return;
}
int pageCount;
if (!int.TryParse(args[1], out pageCount) || pageCount <= 0)
{
Console.WriteLine("The page count must be a positive integer.");
return;
}
Console.WriteLine("Reading...");
EndianStream stream = new EndianStream(File.Open(args[0], FileMode.Open, FileAccess.ReadWrite), Endian.BigEndian);
CacheFileVersionInfo version = new CacheFileVersionInfo(stream);
if (version.Engine != EngineType.ThirdGeneration)
{
Console.WriteLine("Only third-generation map files are supported.");
return;
}
BuildInfoLoader infoLoader = new BuildInfoLoader(XDocument.Load("Formats/SupportedBuilds.xml"), "Formats/");
BuildInformation buildInfo = infoLoader.LoadBuild(version.BuildString);
ThirdGenCacheFile cacheFile = new ThirdGenCacheFile(stream, buildInfo, version.BuildString);
Console.WriteLine("- Engine version: {0}", version.BuildString);
Console.WriteLine("- Internal name: {0}", cacheFile.InternalName);
Console.WriteLine("- Scenario name: {0}", cacheFile.ScenarioName);
Console.WriteLine("- File size: 0x{0:X}", cacheFile.FileSize);
Console.WriteLine("- Virtual size: 0x{0:X}", cacheFile.MetaArea.Size);
for (int i = 0; i < cacheFile.Partitions.Length; i++)
{
var partition = cacheFile.Partitions[i];
if (partition.BasePointer != null)
Console.WriteLine(" - Partition {0} at 0x{1:X}-0x{2:X} (size=0x{3:X})", i, partition.BasePointer.AsPointer(), partition.BasePointer.AsPointer() + partition.Size - 1, partition.Size);
}
Console.WriteLine("- Meta pointer mask: 0x{0:X}", cacheFile.MetaArea.PointerMask);
Console.WriteLine("- Locale pointer mask: 0x{0:X}", (uint)-cacheFile.LocaleArea.PointerMask);
Console.WriteLine("- String pointer mask: 0x{0:X}", cacheFile.StringArea.PointerMask);
Console.WriteLine();
Console.WriteLine("Injecting empty pages...");
int injectSize = pageCount * 0x10000;
Console.WriteLine("- Start address: 0x{0:X} (offset 0x{1:X})", cacheFile.MetaArea.BasePointer - injectSize, cacheFile.MetaArea.Offset);
cacheFile.MetaArea.Resize(cacheFile.MetaArea.Size + injectSize, stream);
Console.WriteLine();
Console.WriteLine("Adjusting the header...");
cacheFile.SaveChanges(stream);
Console.WriteLine();
Console.WriteLine("Successfully injected 0x{0:X} bytes at 0x{1:X} (offset 0x{2:X}).", injectSize, cacheFile.MetaArea.BasePointer, cacheFile.MetaArea.Offset);
stream.Close();
}
