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2020-10-23core: add a small helper-struct that keeps track of xml-parametersGravatar Berthold Stoeger
The XML-parameter code is a mess. Ownership is unclear. Allocation and freeing of strings is in different functions. Sometimes only every second string is free()d, because keys are not copied. But this is done inconsistently. The caller has to know how many parameters the callee may add. Instead, let's add a small helper-struct that uses C++ memory management, but exports a C-API. The array for the XML-library is generated on the fly. This is only the implementation, the old code is not yet replaced. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>