private void DeflateInit(ZLibNative.CompressionLevel compressionLevel, int windowBits, int memLevel,
ZLibNative.CompressionStrategy strategy)
{
ZErrorCode errC;
try
{
errC = ZLibNative.CreateZLibStreamForDeflate(out _zlibStream, compressionLevel,
windowBits, memLevel, strategy);
}
catch (Exception cause)
{
throw new ZLibException("SR.ZLibErrorDLLLoadError", cause);
}
switch (errC)
{
case ZErrorCode.Ok:
return;
case ZErrorCode.MemError:
throw new ZLibException("SR.ZLibErrorNotEnoughMemory", "deflateInit2_", (int)errC, _zlibStream.GetErrorMessage());
case ZErrorCode.VersionError:
throw new ZLibException("SR.ZLibErrorVersionMismatch", "deflateInit2_", (int)errC, _zlibStream.GetErrorMessage());
case ZErrorCode.StreamError:
throw new ZLibException("SR.ZLibErrorIncorrectInitParameters", "deflateInit2_", (int)errC, _zlibStream.GetErrorMessage());
default:
throw new ZLibException("SR.ZLibErrorUnexpected", "deflateInit2_", (int)errC, _zlibStream.GetErrorMessage());
}
}
private void InflateInit(int windowBits)
{
ZLibNative.ErrorCode error;
try
{
error = ZLibNative.CreateZLibStreamForInflate(out _zlibStream, windowBits);
}
catch (Exception exception) // could not load the ZLib dll
{
throw new ZLibException("SR.ZLibErrorDLLLoadError", exception);
}
switch (error)
{
case ZLibNative.ErrorCode.Ok: // Successful initialization
return;
case ZLibNative.ErrorCode.MemError: // Not enough memory
throw new ZLibException("SR.ZLibErrorNotEnoughMemory", "inflateInit2_", (int)error, _zlibStream.GetErrorMessage());
case ZLibNative.ErrorCode.VersionError: //zlib library is incompatible with the version assumed
throw new ZLibException("SR.ZLibErrorVersionMismatch", "inflateInit2_", (int)error, _zlibStream.GetErrorMessage());
case ZLibNative.ErrorCode.StreamError: // Parameters are invalid
throw new ZLibException("SR.ZLibErrorIncorrectInitParameters", "inflateInit2_", (int)error, _zlibStream.GetErrorMessage());
default:
throw new ZLibException("SR.ZLibErrorUnexpected", "inflateInit2_", (int)error, _zlibStream.GetErrorMessage());
}
}