5 #include <boost/lexical_cast.hpp>
6 #include <boost/algorithm/string.hpp>
15 const std::wstring& lhs;
17 explicit param_comparer(const std::wstring& p) : lhs(p) {}
18 bool operator()(const std::wstring& rhs) { return boost::iequals(lhs, rhs); }
22 bool contains_param(const std::wstring& name, C&& params)
24 return std::find_if(params.begin(), params.end(), param_comparer(name)) != params.end();
28 void replace_placeholders(const std::wstring& placeholder, const std::wstring& replacement, C&& params)
30 for (auto& param : params)
31 boost::ireplace_all(param, placeholder, replacement);
34 template<typename T, typename C>
35 typename std::enable_if<!std::is_convertible<T, std::wstring>::value, typename std::decay<T>::type>::type get_param(const std::wstring& name, C&& params, T fail_value = T())
37 auto it = std::find_if(std::begin(params), std::end(params), param_comparer(name));
38 if(it == params.end())
43 if(++it == params.end())
44 throw std::out_of_range("");
46 return boost::lexical_cast<typename std::decay<T>::type>(*it);
50 CASPAR_THROW_EXCEPTION(invalid_argument() << msg_info("Failed to parse param.") << arg_name_info(name) << nested_exception(std::current_exception()));
55 std::wstring get_param(const std::wstring& name, C&& params, const std::wstring& fail_value = L"")
57 auto it = std::find_if(std::begin(params), std::end(params), param_comparer(name));
58 if(it == params.end())
63 if(++it == params.end())
64 throw std::out_of_range("");
70 CASPAR_THROW_EXCEPTION(invalid_argument() << msg_info("Failed to parse param.") << arg_name_info(name) << nested_exception(std::current_exception()));