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openmw-tes3coop/components/fallback/validate.hpp

49 lines
1.4 KiB
C++

#ifndef OPENMW_COMPONENTS_FALLBACK_VALIDATE_H
#define OPENMW_COMPONENTS_FALLBACK_VALIDATE_H
#include <boost/program_options.hpp>
// Parses and validates a fallback map from boost program_options.
// Note: for boost to pick up the validate function, you need to pull in the namespace e.g.
// by using namespace Fallback;
namespace Fallback
{
struct FallbackMap {
std::map<std::string,std::string> mMap;
};
void validate(boost::any &v, std::vector<std::string> const &tokens, FallbackMap*, int)
{
if(v.empty())
{
v = boost::any(FallbackMap());
}
FallbackMap *map = boost::any_cast<FallbackMap>(&v);
for(std::vector<std::string>::const_iterator it=tokens.begin(); it != tokens.end(); ++it)
{
int sep = it->find(",");
if(sep < 1 || sep == (int)it->length()-1)
#if (BOOST_VERSION < 104200)
throw boost::program_options::validation_error("invalid value");
#else
throw boost::program_options::validation_error(boost::program_options::validation_error::invalid_option_value);
#endif
std::string key(it->substr(0,sep));
std::string value(it->substr(sep+1));
if(map->mMap.find(key) == map->mMap.end())
{
map->mMap.insert(std::make_pair (key,value));
}
}
}
}
#endif