// 解析WZ主目录
internal void ParseMainWzDirectory()
{
WzLib.WzDirectory directory;
if (this.path == null)
{
return;
}
BinaryReader fileReader = new BinaryReader(File.Open(this.path, FileMode.Open));
this.ident = "";
// 前四个字节，文件标识：PKG1
for (int i = 0; i < 4; i++)
{
this.ident = this.ident + ((char)fileReader.ReadByte());
}
this.fsize = fileReader.ReadUInt64(); // 8个字节，文件大小
this.fstart = fileReader.ReadUInt32(); // 4个字节，开始位置
this.copyright = WzTools.ReadNullTerminatedString(fileReader); // 字符串，版本信息：Package file v1.0 Copyright 2002 Wizet, ZMS
this.version = fileReader.ReadInt16(); // 2个字节，文件版本
// 这个循环用于穷举versionHash值
for (int j = 0; j < 0xff; j++)
{
this.fileVersion = (byte)j;
if (this.GetVersionHash())
{
long pos = fileReader.BaseStream.Position;
WzDirectory tdir = null;
try
{
tdir = new WzDirectory(fileReader, fstart, name, versionHash);
tdir.ParseDirectory();
}
catch
{
fileReader.BaseStream.Position = pos;
continue;
}
WzImage test = null;
if (tdir.WzImages.Length != 0)
{
test = tdir.WzImages[0];
}
else
{
test = GetTestImage(tdir.WzDirectories);
}
try
{
fileReader.BaseStream.Position = test.Offset;
byte check = fileReader.ReadByte();
fileReader.BaseStream.Position = pos;
tdir.Dispose();
if (check == 0x73 || check == 0x1B)
{
goto Label_00B1;
}
else
{
fileReader.BaseStream.Position = pos;
}
}
catch
{
fileReader.BaseStream.Position = pos;
continue;
}
}
}
throw new Exception("Error with game version hash : The specified game version is incorrect and WzLib was unable to determine the version itself");
Label_00B1:
directory = new WzLib.WzDirectory(fileReader, this.fstart, this.name, this.versionHash);
directory.ParseDirectory();
this.wzDir = directory;
}
