public static bool TryGetValue <T>(this SerializationInfo info, string name, out T value)
{
if (info.ContainsEntry(name))
{
value = info.GetValue <T>(name);
return(true);
}
value = default(T);
return(false);
}
private unsafe MemoryBlock(SerializationInfo info, StreamingContext context)
{
this._length = !info.ContainsEntry("length64") ? (long)info.GetInt32("length") : info.GetInt64("length64");
if (info.ContainsEntry("bitmapWidth"))
{
int width = info.GetInt32("bitmapWidth");
int height = info.GetInt32("bitmapHeight");
if ((width != 0 || height != 0) && (long)width * (long)height * 4L != this._length)
{
throw new ApplicationException("Invalid file format: width * height * 4 != length");
}
}
if (info.GetBoolean("hasParent"))
{
this._parentBlock = (MemoryBlock)info.GetValue("parentBlock", typeof(MemoryBlock));
long parentOffset;
try
{
parentOffset = info.GetInt64("parentOffset64");
}
catch (SerializationException ex)
{
parentOffset = (long)info.GetInt32("parentOffset");
}
this._valid = true;
}
else
{
DeferredDeserializer deferredFormatter = context.Context as DeferredDeserializer;
bool deferred = false;
info.TryGetValue("deferred", out deferred);
if (deferred && deferredFormatter != null)
{
// set this object up for deferred deserialization
this._buffer = new byte[this._length];
deferredFormatter.AddDeferredObject(this);
}
else if (deferred && deferredFormatter == null)
{
throw new InvalidOperationException("stream has deferred serialization streams, but a DeferredFormatter was not provided");
}
else
{
// not deferred, so load
this._buffer = new byte[this._length];
this._valid = true;
bool processed = false;
if (info.ContainsEntry("pointerData"))
{
try
{
byte[] numArray = (byte[])info.GetValue("pointerData", typeof(byte[]));
Array.Copy(numArray, 0, _buffer, 0, numArray.LongLength);
processed = true;
}
catch (SerializationException ex)
{
processed = false;
}
}
if (processed)
{
return;
}
uint chunkCount = info.GetUInt32("chunkCount");
int chunkFormat = info.GetInt32("chunkFormat");
if (chunkFormat != 0)
{
throw new FormatException("Invalid chunkFormat. Expected 0, but got " + chunkFormat.ToString());
}
long num = 0;
for (uint index = 0; index < chunkCount; ++index)
{
string name = "chunk" + index.ToString((IFormatProvider)CultureInfo.InvariantCulture);
byte[] numArray = info.GetValue <byte[]>(name);
fixed(byte *numPtr = numArray)
Array.Copy(numArray, 0, _buffer, num, numArray.LongLength);
num += numArray.LongLength;
}
if (num != this._length)
{
throw new FormatException(string.Format("length={0}, but all the chunks only account for {1} bytes", (object)this._length.ToString("N0"), (object)num.ToString("N0")));
}
}
}
}
