public UnmanagedMemoryStream GetUnmanagedStream()
{
if (IsFile)
{
FileMapping fileMapping = new FileMapping();
DemandFileIOPermission();
fileMapping.OpenFile(_fontUri.LocalPath);
return(fileMapping);
}
byte[] bits;
// Try our cache first.
lock (_resourceCache)
{
bits = _resourceCache.Get(_fontUri);
}
if (bits == null)
{
Stream fontStream;
if (_isInternalCompositeFont)
{
// We should read this font from our framework resources
fontStream = GetCompositeFontResourceStream();
}
else
{
WebResponse response = WpfWebRequestHelper.CreateRequestAndGetResponse(_fontUri);
fontStream = response.GetResponseStream();
if (String.Equals(response.ContentType, ObfuscatedContentType, StringComparison.Ordinal))
{
// The third parameter makes sure the original stream is closed
// when the deobfuscating stream is disposed.
fontStream = new DeobfuscatingStream(fontStream, _fontUri, false);
}
}
UnmanagedMemoryStream unmanagedStream = fontStream as UnmanagedMemoryStream;
if (unmanagedStream != null)
{
return(unmanagedStream);
}
bits = StreamToByteArray(fontStream);
fontStream?.Close();
}
lock (_resourceCache)
{
_resourceCache.Add(_fontUri, bits, false);
}
return(ByteArrayToUnmanagedStream(bits));
}
public Stream GetStream()
{
if (IsFile)
{
FileMapping fileMapping = new FileMapping();
DemandFileIOPermission();
fileMapping.OpenFile(_fontUri.LocalPath);
return(fileMapping);
}
byte[] bits;
// Try our cache first.
lock (_resourceCache)
{
bits = _resourceCache.Get(_fontUri);
}
if (bits != null)
{
return(new MemoryStream(bits));
}
Stream fontStream;
if (_isInternalCompositeFont)
{
// We should read this font from our framework resources
fontStream = GetCompositeFontResourceStream();
}
else
{
WebRequest request = PackWebRequestFactory.CreateWebRequest(_fontUri);
WebResponse response = request.GetResponse();
fontStream = response.GetResponseStream();
if (String.Equals(response.ContentType, ObfuscatedContentType, StringComparison.Ordinal))
{
// The third parameter makes sure the original stream is closed
// when the deobfuscating stream is disposed.
fontStream = new DeobfuscatingStream(fontStream, _fontUri, false);
}
}
return(fontStream);
}
