Stream IFileSystem.OpenFile(string path, FileAccessMode mode)
{
path = path.Replace(PathOp.AltDirectorySeparatorChar, PathOp.DirectorySeparatorChar);
ContentTree.Node node = tree[path];
return(node.Source.GetUncompressedStream());
}
bool IFileSystem.DirectoryExists(string path)
{
path = path.Replace(PathOp.AltDirectorySeparatorChar, PathOp.DirectorySeparatorChar);
ContentTree.Node node = tree[path];
return(node != null && node.Source == null);
}
private void ReadContentTreeSection(ContentTree.Node node, BinaryReader r, long dataOffset, string fullPath = null)
{
ResourceFlags flags = (ResourceFlags)r.ReadByte();
string name = r.ReadAsciiString();
if (!string.IsNullOrEmpty(fullPath))
{
fullPath += PathOp.DirectorySeparatorChar;
}
fullPath += name;
ushort childrenCount;
if ((flags & ResourceFlags.HasChildren) != 0)
{
childrenCount = r.ReadUInt16();
}
else
{
childrenCount = 0;
}
FileResourceSource source = null;
if ((flags & ResourceFlags.HasResource) != 0)
{
string path;
long offset, size;
if ((flags & ResourceFlags.External) == 0)
{
path = this.path;
offset = r.ReadUInt32();
size = r.ReadUInt32();
offset += dataOffset;
}
else
{
path = r.ReadAsciiString();
offset = r.ReadUInt32();
size = r.ReadUInt32();
}
source = new FileResourceSource(path, offset, size, (flags & ResourceFlags.Compressed) != 0);
}
if (!string.IsNullOrEmpty(name))
{
node = node.TryAdd(name);
node.Source = source;
}
for (uint i = 0; i < childrenCount; i++)
{
ReadContentTreeSection(node, r, dataOffset, fullPath);
}
}
Stream IFileSystem.OpenFile(string path, FileAccessMode mode)
{
path = path.Replace(PathOp.AltDirectorySeparatorChar, PathOp.DirectorySeparatorChar);
ContentTree.Node node = tree[path];
if (node == null)
{
throw new FileNotFoundException("File \"" + path + "\" was not found in CompressedContent");
}
if (node.Source == null)
{
throw new NotSupportedException();
}
return(node.Source.GetUncompressedStream());
}
private static void WriteContentTreeSection(ContentTree.Node node, Stream tableStream, Stream dataStream, Func <string, ResourceFlags, ResourceFlags> resourceFlagsModifier)
{
using (BinaryWriter w = new BinaryWriter(tableStream, Encoding.UTF8, true)) {
ResourceFlags flags = 0;
if (node.Children.Count > 0)
{
flags |= ResourceFlags.HasChildren;
}
if (node.Source != null)
{
flags |= ResourceFlags.HasResource;
flags &= ~ResourceFlags.External;
}
if (resourceFlagsModifier != null)
{
flags = resourceFlagsModifier(node.Name, flags);
}
w.Write((byte)flags);
w.WriteAsciiString(node.Name);
if ((flags & ResourceFlags.HasChildren) != 0)
{
w.Write((ushort)node.Children.Count);
}
if ((flags & ResourceFlags.HasResource) != 0)
{
if ((flags & ResourceFlags.External) != 0)
{
FileResourceSource source = node.Source as FileResourceSource;
w.WriteAsciiString(source.Path);
w.Write((uint)source.Offset);
w.Write((uint)source.Size);
}
else
{
long offset = dataStream.Position;
w.Write((uint)offset);
using (Stream stream = (flags & ResourceFlags.Compressed) != 0
? node.Source.GetCompressedStream()
: node.Source.GetUncompressedStream()) {
stream.CopyTo(dataStream);
}
long size = (dataStream.Position - offset);
w.Write((uint)size);
}
}
}
foreach (ContentTree.Node children in node.Children)
{
WriteContentTreeSection(children, tableStream, dataStream, resourceFlagsModifier);
}
}
private static void WriteContentTreeSection(ContentTree.Node node, Stream tableStream, Stream dataStream, PostprocessFileCallback postprocessFileCallback)
{
using (BinaryWriter w = new BinaryWriter(tableStream, Encoding.UTF8, true)) {
ResourceFlags flags = 0;
if (node.Children.Count > 0)
{
flags |= ResourceFlags.HasChildren;
}
if (node.Source != null)
{
flags |= ResourceFlags.HasResource;
flags &= ~ResourceFlags.External;
}
Stream overrideStream = null;
if (postprocessFileCallback != null)
{
postprocessFileCallback(node, ref flags, ref overrideStream);
}
try {
w.Write((byte)flags);
w.WriteAsciiString(node.Name);
if ((flags & ResourceFlags.HasChildren) != 0)
{
w.Write((ushort)node.Children.Count);
}
if ((flags & ResourceFlags.HasResource) != 0)
{
if ((flags & ResourceFlags.External) != 0)
{
if (overrideStream != null)
{
throw new InvalidOperationException("Cannot use overrideStream with ResourceFlags.External");
}
FileResourceSource source = node.Source as FileResourceSource;
if (source == null)
{
throw new InvalidOperationException("Specified resource must be saved as file");
}
w.WriteAsciiString(source.Path);
w.Write((uint)source.Offset);
w.Write((uint)source.Size);
}
else
{
long offset = dataStream.Position;
if (overrideStream != null)
{
if ((flags & ResourceFlags.Compressed) != 0)
{
using (DeflateStream ds = new DeflateStream(dataStream, CompressionLevel.Optimal, true)) {
overrideStream.CopyTo(ds);
}
}
else
{
overrideStream.CopyTo(dataStream);
}
}
else
{
using (Stream stream = (flags & ResourceFlags.Compressed) != 0
? node.Source.GetCompressedStream()
: node.Source.GetUncompressedStream()) {
stream.CopyTo(dataStream);
}
}
long size = (dataStream.Position - offset);
w.Write((uint)offset);
w.Write((uint)size);
}
}
} finally {
if (overrideStream != null)
{
overrideStream.Dispose();
}
}
}
foreach (ContentTree.Node children in node.Children)
{
WriteContentTreeSection(children, tableStream, dataStream, postprocessFileCallback);
}
}
