/// <summary> </summary>
internal override void Write(WzFileStream fs)
{
fs.Write4u(0); // Size Reserve
long startBlock = fs.Tell();
fs.StringPool.Write(this.Value.ClassName, 0x73, 0x1B);
this.Value.Write(fs);
long endBlock = fs.Tell();
fs.Seek(startBlock - 4);
fs.Write4u((uint)(endBlock - startBlock));
fs.Seek(endBlock);
}
/// <summary> 使用外部的的<see cref="WzFileStream"/>儲存資料 </summary>
public bool Write(WzFileStream zs)
{
this.Hash = HashTools.GenerateArchiveVersionHash(this.Version.ToString());
// header
zs.Write(new byte[] { (byte)'P', (byte)'K', (byte)'G', (byte)'1' }, 4);
zs.Write8(0); //Reserve
zs.Write4u(0); //Reserve
zs.WriteString(this.Description);
// data
long off = zs.Tell();
this.DataOffset = (uint)off;
zs.BaseOffset = this.DataOffset;
zs.Write2u((ushort)HashTools.EncryptArchiveVersionHash(this.Hash));
this.RootDirectory.Update();
this.RootDirectory.Write(zs);
long endoff = zs.Tell();
// rewrite size, offset
zs.Seek(4);
zs.Write8(endoff - off);
zs.Write4u((uint)off);
// end write
zs.Flush();
return(true);
}
/// <summary> 從指定的資料流中讀取<see cref="WzImage"/>的資料 </summary>
/// <param name="stream"> 來源資料流 </param>
public void Read(WzFileStream stream)
{
stream.Seek(0, true);
stream.StringPool.Clear();
this.Data = WzSerialize.FromClassName(stream.StringPool.Read());
this.Data.ImageFile = this;
this.Data.Read(stream);
}
internal override void Write(WzFileStream zf)
{
// start write
int count = this.Items.Count;
long[] itemoff = new long[count];
this.Offset = (uint)zf.Tell();
zf.Write4(count, true);
// write header
for (int i = 0; i < count; i++)
{
WzArchiveItem item = this.Items[i];
zf.StringPool.DirectoryWrite(item.Name, item.Type, WzArchiveItemType.Reference);
zf.Write4(item.Size, true);
zf.Write4(item.Checksum, true);
itemoff[i] = zf.Tell();
zf.Write4u(0u); // reserve
}
// package items
for (int i = 0; i < count; i++)
{
this.Items[i].Write(zf);
}
long endoff = zf.Tell();
// rewrite offset
for (int i = 0; i < count; i++)
{
zf.Seek(itemoff[i]);
uint offKey = HashTools.GenerateOffsetKey((uint)zf.Tell(), this.Archive.DataOffset, this.Archive.Hash);
uint encoff = HashTools.EncryptOffsetHash(this.Items[i].Offset, offKey, this.Archive.DataOffset);
zf.Write4u(encoff);
}
// end write
zf.Seek(endoff);
}
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> 從指定資料流讀取腳本資料 </summary>
public bool Read(WzFileStream stream)
{
stream.Seek(0, true);
byte flag = stream.Read1u();
switch (flag)
{
case 1:
int len = stream.Read4(true);
this.Script = stream.ReadString(len, Encoding.UTF8, true);
break;
default:
throw new NotSupportedException("Not supported flag : " + flag);
}
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);
}
/// <summary> </summary>
internal override void Read(WzFileStream fs)
{
int blockSize = fs.Read4();
long off = fs.Tell();
string classname = fs.StringPool.Read();
WzSerialize obj = WzSerialize.FromClassName(classname, this.Name);
obj.ImageFile = this.Parent.ImageFile;
obj.Read(fs);
if (fs.Tell() != (off + blockSize))
{
fs.Seek(off + blockSize);
#if DEBUG
System.Console.WriteLine("沒有解析完全 ： {0}", this.GetImagePath());
#endif
}
this.Value = obj;
}