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2014-08-16Implemented primitive optional parameter support for external functionsAdrian Kummerlaender
* renamed FunctionExternalTextFormatter into FunctionExternalCommand ** the goal is to provide a general interface to a variety of external commands *** e.g. not just text formatters but system utilities for file management and so on ** this requires the stdin parameter to be optional as not all external commands require stdin input * implemented "filter_derived" helper template to determine amount of optional parameters ** optional parameters are defined as "boost::optional" specializations *** they in turn can be detected by checking if "boost::optional_detail::optional_tag" is a base class * "callConstructDocument" member method of "FunctionBase" performs additional bounds checking of parameter vector * "boost::optional<std::string>" specific member overload was added to "XObjectValue" helper class ** we will have to provide full specializations for all optional types as C++ prohibits partial member function template specialization * renamed the external function in "PlattformGuard" * changed README.md and test cases accordingly
2014-07-15Fixed PlatformGuard name spellingAdrian Kummerlaender
* its called a "platform" and not a "plattform" as in German...