private ZErrorCode ReadDeflateOutput(byte[] outputBuffer, ZFlushCode flushCode, out int bytesRead)
{
lock (syncLock) {
GCHandle outputBufferHndl = GCHandle.Alloc(outputBuffer, GCHandleType.Pinned);
try {
_zlibStream.NextOut = outputBufferHndl.AddrOfPinnedObject();
_zlibStream.AvailOut = (uint)outputBuffer.Length;
ZErrorCode errC = Deflate(flushCode);
bytesRead = outputBuffer.Length - (int)_zlibStream.AvailOut;
return(errC);
} finally {
outputBufferHndl.Free();
}
}
}
private unsafe ZErrorCode ReadDeflateOutput(byte[] outputBuffer, ZFlushCode flushCode, out int bytesRead)
{
Debug.Assert(outputBuffer?.Length > 0);
lock (SyncLock)
{
fixed(byte *bufPtr = &outputBuffer[0])
{
_zlibStream.NextOut = (IntPtr)bufPtr;
_zlibStream.AvailOut = (uint)outputBuffer.Length;
ZErrorCode errC = Deflate(flushCode);
bytesRead = outputBuffer.Length - (int)_zlibStream.AvailOut;
return(errC);
}
}
}
private void Init(string zlibErrorContext, ZErrorCode zlibErrorCode, string zlibErrorMessage) {
this.zlibErrorContext = zlibErrorContext;
this.zlibErrorCode = zlibErrorCode;
this.zlibErrorMessage = zlibErrorMessage;
}
/// <summary>
/// This is the preferred constructor to use.
/// The other constructors are provided for compliance to Fx design guidelines.
/// </summary>
/// <param name="message">A (localised) human readable error description.</param>
/// <param name="zlibErrorContext">A description of the context within zlib where the error occurred (e.g. the function name).</param>
/// <param name="zlibErrorCode">The error code returned by a ZLib function that caused this exception.</param>
/// <param name="zlibErrorMessage">The string provided by ZLib as error information (unlocalised).</param>
public ZLibException(string message, string zlibErrorContext, int zlibErrorCode, string zlibErrorMessage) : base(message)
{
_zlibErrorContext = zlibErrorContext;
_zlibErrorCode = (ZErrorCode)zlibErrorCode;
_zlibErrorMessage = zlibErrorMessage;
}