Function API_ROUTINE isc_get_segment

src/yvalve/why.cpp:3030–3062

Get a segment from a blob opened for reading.

// Get a segment from a blob opened for reading.
ISC_STATUS API_ROUTINE isc_get_segment(ISC_STATUS* userStatus, isc_blob_handle* blobHandle,
	USHORT* returnLength, USHORT bufferLength, SCHAR* buffer)
{
	StatusVector status(userStatus);
	CheckStatusWrapper statusWrapper(&status);

	try
	{
		RefPtr<YBlob> blob(translateHandle(blobs, blobHandle));
		unsigned int length;
		int cc = blob->getSegment(&statusWrapper, bufferLength, reinterpret_cast<UCHAR*>(buffer), &length);

		if (!(status.getState() & IStatus::STATE_ERRORS))
			*returnLength = length;

		// Raise pseudo errors
		switch (cc)
		{
		case IStatus::RESULT_NO_DATA:
			Arg::Gds(isc_segstr_eof).raise();
			break;
		case IStatus::RESULT_SEGMENT:
			Arg::Gds(isc_segment).raise();
			break;
		}
	}
	catch (const Exception& e)
	{
		e.stuffException(&statusWrapper);
	}

	return status[1];
}


// Snatch a slice of an array.