std::unique_ptr<const BaseContainer> AdapterChain::doConverterExtract(const BaseContainer &from_data) const
{
if (converters_.empty()
&& archiver_->getContainerType() != writer_->getContainerType()
)
{
throw MethodNotApplicableException("converters are needed but are not specified");
}
// first step is different
bool first = true;
unique_ptr<const BaseContainer> data;
for (const auto& converter : converters_)
{
if (first)
{
if (converter->getArchiveContainerType() != from_data.getType()) error("Adapters are incompatible");
data = std::move(converter->extract(from_data));
first = false;
}
else
{
if (converter->getArchiveContainerType() != data->getType()) error("Adapters are incompatible");
data = std::move(converter->extract(*data));
}
}
return data;
}
void AdapterChain::doWriterExtract(const BaseContainer &from_data, string to_file) const
{
if (!writer_) throw MethodNotApplicableException("a writer is needed but is not specified");
if (writer_->getContainerType() != from_data.getType()) error("Adapters are incompatible");
const OutputFileInfo outinfo = {to_file, file_extension_};
writer_->write(from_data, outinfo);
}
