-/* $Id$
-
-This file is part of libmspcore
-Copyright © 2006-2009, 2011 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#ifndef MSP_CORE_GETOPT_H_
#define MSP_CORE_GETOPT_H_
-#include <sstream>
+#include <list>
+#include <stdexcept>
#include <string>
#include <vector>
-#include "except.h"
+#include <msp/strings/lexicalcast.h>
namespace Msp {
+class usage_error: public std::runtime_error
+{
+private:
+ std::string help_;
+
+public:
+ usage_error(const std::string &w, const std::string &h = std::string()): std::runtime_error(w), help_(h) { }
+ ~usage_error() throw() { }
+
+ const char *help() const throw() { return help_.c_str(); }
+};
+
+
class GetOpt
{
public:
template<typename T>
class Option: public OptBase
{
+ private:
+ T &data;
+
public:
Option(char s, const std::string &l, T &d, ArgType a): OptBase(s, l, a), data(d) { }
virtual void store(const std::string &a)
{
- T tmp;
- std::istringstream ss(a);
- ss>>tmp;
- if(ss.fail())
- throw UsageError("Invalid argument for --"+lng);
-
- data = tmp;
+ try
+ {
+ data = lexical_cast<T>(a);
+ }
+ catch(const lexical_error &e)
+ {
+ throw usage_error("Invalid argument for --"+lng+" ("+e.what()+")");
+ }
}
- private:
- T &data;
};
template<typename T>
class ListOption: public OptBase
{
+ private:
+ T &data;
+
public:
ListOption(char s, const std::string &l, T &d, ArgType a): OptBase(s, l, a), data(d)
- { if(arg_type!=REQUIRED_ARG) throw Exception("ListOption with arg_type!=REQUIRED makes no sense"); }
+ { if(arg_type!=REQUIRED_ARG) throw std::invalid_argument("ListOption arg_type!=REQUIRED"); }
virtual void store() { }
virtual void store(const std::string &a)
{
- typename T::value_type tmp;
- std::istringstream ss(a);
- ss>>tmp;
- if(ss.fail())
- throw UsageError("Invalid argument for --"+lng);
-
- data.push_back(tmp);
+ try
+ {
+ data.push_back(lexical_cast<typename T::value_type>(a));
+ }
+ catch(const lexical_error &e)
+ {
+ throw usage_error("Invalid argument for --"+lng+" ("+e.what()+")");
+ }
}
- private:
- T &data;
};
+ bool help;
std::list<OptBase *> opts;
std::vector<std::string> args;
public:
+ GetOpt();
~GetOpt();
const std::vector<std::string> &get_args() const { return args; }