C++ (Cpp) BPackageData::Compression示例

示例#1

文件： PackageDataReaderV1.cpp 项目： naveedasmat/haiku

status_t
BPackageDataReaderFactory::CreatePackageDataReader(BDataReader* dataReader,
	const BPackageData& data, BAbstractBufferedDataReader*& _reader)
{
	if (data.IsEncodedInline()) {
		BAbstractBufferedDataReader* reader
			= new(std::nothrow) PackageDataInlineReader(data);
		if (reader == NULL)
			return B_NO_MEMORY;

		_reader = reader;
		return B_OK;
	}

	PackageDataReader* reader;

	switch (data.Compression()) {
		case B_HPKG_COMPRESSION_NONE:
			reader = new(std::nothrow) UncompressedPackageDataReader(
				dataReader, fBufferPool);
			break;
		case B_HPKG_COMPRESSION_ZLIB:
			reader = new(std::nothrow) ZlibPackageDataReader(dataReader,
				fBufferPool);
			break;
		default:
			return B_BAD_VALUE;
	}

	if (reader == NULL)
		return B_NO_MEMORY;

	status_t error = reader->Init(data);
	if (error != B_OK) {
		delete reader;
		return error;
	}

	_reader = reader;
	return B_OK;
}