diff options
| -rw-r--r-- | src/common/command_line.h | 50 |
1 files changed, 45 insertions, 5 deletions
diff --git a/src/common/command_line.h b/src/common/command_line.h index 7b183d86b..ddbb136e9 100644 --- a/src/common/command_line.h +++ b/src/common/command_line.h @@ -46,7 +46,7 @@ namespace command_line //! \return True if `str` is `is_iequal("n" || "no" || `tr("no"))`. bool is_no(const std::string& str); - template<typename T, bool required = false> + template<typename T, bool required = false, bool dependent = false> struct arg_descriptor; template<typename T> @@ -81,6 +81,22 @@ namespace command_line }; template<typename T> + struct arg_descriptor<T, false, true> + { + typedef T value_type; + + const char* name; + const char* description; + + const arg_descriptor<bool, false>& ref; + + T true_default_value; + T false_default_value; + + bool not_use_default; + }; + + template<typename T> boost::program_options::typed_value<T, char>* make_semantic(const arg_descriptor<T, true>& /*arg*/) { return boost::program_options::value<T>()->required(); @@ -96,6 +112,23 @@ namespace command_line } template<typename T> + boost::program_options::typed_value<T, char>* make_semantic(const arg_descriptor<T, false, true>& arg) + { + auto semantic = boost::program_options::value<T>(); + if (!arg.not_use_default) { + if (arg.ref.default_value) + { + semantic->default_value(arg.true_default_value); + } + else + { + semantic->default_value(arg.false_default_value); + } + } + return semantic; + } + + template<typename T> boost::program_options::typed_value<T, char>* make_semantic(const arg_descriptor<T, false>& arg, const T& def) { auto semantic = boost::program_options::value<T>(); @@ -112,8 +145,8 @@ namespace command_line return semantic; } - template<typename T, bool required> - void add_arg(boost::program_options::options_description& description, const arg_descriptor<T, required>& arg, bool unique = true) + template<typename T, bool required, bool dependent> + void add_arg(boost::program_options::options_description& description, const arg_descriptor<T, required, dependent>& arg, bool unique = true) { if (0 != description.find_nothrow(arg.name, false)) { @@ -189,12 +222,19 @@ namespace command_line return !value.empty(); } - template<typename T, bool required> - bool is_arg_defaulted(const boost::program_options::variables_map& vm, const arg_descriptor<T, required>& arg) + template<typename T, bool required, bool dependent> + bool is_arg_defaulted(const boost::program_options::variables_map& vm, const arg_descriptor<T, required, dependent>& arg) { return vm[arg.name].defaulted(); } + template<typename T, bool required> + T get_arg(const boost::program_options::variables_map& vm, const arg_descriptor<T, required, true>& arg) + { + if (is_arg_defaulted(vm, arg) && !is_arg_defaulted(vm, arg.ref)) + return get_arg(vm, arg.ref) ? arg.true_default_value : arg.false_default_value; + return vm[arg.name].template as<T>(); + } template<typename T, bool required> T get_arg(const boost::program_options::variables_map& vm, const arg_descriptor<T, required>& arg) |