/// <summary> 從<see cref="WzFile"/>中讀取資料並建立<see cref="WzLua"/>實體 </summary>
public static WzLua FromWzFile(WzFile file)
{
WzLua lua = new WzLua();
WzFileStream fs = new WzFileStream(file.Stream, WzKeyType.K);
fs.BaseOffset = file.Offset;
lua.Name = file.Name;
lua.Read(fs);
return(lua);
}
/// <summary> 使用指定的加密金鑰，將加密過的<see cref="WzLua"/>資料寫入<see cref="WzFile"/>中 </summary>
/// <param name="name"> <see cref="WzFile"/>的名子 </param>
/// <param name="key"> 加密金鑰 </param>
public WzFile ToWzFile(string name, WzKeyType key = WzKeyType.None)
{
WzFile file = new WzFile(name, key);
WzFileStream stream = new WzFileStream(file.Stream, file.KeyType);
this.Write(stream);
file.Size = (int)stream.Length;
stream.Dispose(false);
return(file);
}
/// <summary> 透過指定路徑取得對應的<see cref="WzVariant"/> </summary>
/// <param name="path"> <see cref="WzVariant"/>的所在位置 </param>
/// <param name="img"> 尋找時所開啟的<see cref="WzImage"/>物件 </param>
public WzVariant GetVariant(string path, ref WzImage img)
{
int index = path.IndexOf(".img/") + 4;
WzFile file = this[path.Substring(0, index)] as WzFile;
if (file != null)
{
img = WzImage.FromWzFile(file);
return(img[path.Substring(index + 1)]);
}
return(WzVariant.Null);
}
internal bool Read(WzFileStream zs)
{
this.Items.Clear();
zs.Seek(this.Offset);
int count = zs.Read4(true);
for (int i = 0; i < count; i++)
{
WzArchiveItem item = null;
WzArchiveItemType itemtype;
string itemname = zs.StringPool.DirectoryRead(out itemtype, WzArchiveItemType.Reference);
if (itemtype == WzArchiveItemType.Directory)
{
item = new WzDirectory(itemname);
}
else if (itemtype == WzArchiveItemType.File)
{
item = new WzFile(itemname, zs.KeyType)
{
Stream = zs.BaseStream
};
}
else
{
throw new InvalidDataException("Undefined item type : " + (int)itemtype);
}
item.Size = zs.Read4(true);
item.Checksum = zs.Read4(true);
uint offKey = HashTools.GenerateOffsetKey((uint)zs.Tell(), this.Archive.DataOffset, this.Archive.Hash);
item.Offset = HashTools.DecryptOffsetHash(zs.Read4u(), offKey, this.Archive.DataOffset);
if ((item.Offset + item.Size) > zs.Length)
{
return(false);
}
this.Add(item);
}
for (int i = 0; i < this.Items.Count; i++)
{
if (this.Items[i].Type == WzArchiveItemType.Directory)
{
(this.Items[i] as WzDirectory).Read(zs);
}
}
return(true);
}
/// <summary> 從<see cref="WzFile"/>中讀取資料並建立<see cref="WzImage"/>實體 </summary>
/// <param name="file"> </param>
/// <param name="dynamic"> 是否使用動態讀取。使用動態讀取可以減少圖片和聲音佔用大量記憶體空間，但讀取速度會稍微慢一點 </param>
public static WzImage FromWzFile(WzFile file, bool dynamic = false)
{
if (file == null)
{
return(null);
}
WzImage img = new WzImage();
WzFileStream fs = new WzFileStream(file.Stream, file.KeyType);
fs.BaseOffset = file.Offset;
fs.Seek(file.Offset);
fs.DynamicRead = dynamic;
img.Read(fs);
if (!dynamic)
{
fs.Dispose(false);
}
return(img);
}
