3 This file is part of libmspcore
4 Copyright © 2006-2007 Mikko Rasa, Mikkosoft Productions
5 Distributed under the LGPL
7 #ifndef MSP_CORE_GETOPT_H_
8 #define MSP_CORE_GETOPT_H_
30 OptBase &set_help(const std::string &);
31 OptBase &set_help(const std::string &, const std::string &);
32 char get_short() const { return shrt; }
33 const std::string &get_long() const { return lng; }
34 ArgType get_arg_type() const { return arg_type; }
35 const std::string &get_help() const { return help; }
36 const std::string &get_metavar() const { return metavar; }
37 unsigned get_seen_count() const { return seen_count; }
38 virtual void process()=0;
39 virtual void process(const std::string &)=0;
40 virtual ~OptBase() { }
49 OptBase(char, const std::string &, ArgType);
54 class Option: public OptBase
57 Option(char s, const std::string &l, T &d, ArgType a): OptBase(s, l, a), data(d) { }
59 virtual void process()
61 if(arg_type==REQUIRED_ARG)
62 throw UsageError("--"+lng+" requires an argument");
67 virtual void process(const std::string &a)
70 throw UsageError("--"+lng+" takes no argument");
73 std::istringstream ss(a);
76 throw UsageError("Invalid argument for --"+lng);
88 class ListOption: public OptBase
91 ListOption(char s, const std::string &l, T &d, ArgType a): OptBase(s, l, a), data(d)
92 { if(arg_type!=REQUIRED_ARG) throw Exception("ListOption with arg_type!=REQUIRED makes no sense"); }
94 virtual void process()
96 throw UsageError("--"+lng+" requires an argument");
99 virtual void process(const std::string &a)
101 typename T::value_type tmp;
102 std::istringstream ss(a);
105 throw UsageError("Invalid argument for --"+lng);
114 std::list<OptBase *> opts;
115 std::vector<std::string> args;
120 const std::vector<std::string> &get_args() const { return args; }
123 OptBase &add_option(char s, const std::string &l, T &d, ArgType a=NO_ARG)
124 { opts.push_back(new Option<T>(s, l, d, a)); return *opts.back(); }
127 OptBase &add_option(char s, const std::string &l, std::list<T> &d, ArgType a=REQUIRED_ARG)
128 { opts.push_back(new ListOption<std::list<T> >(s, l, d, a)); return *opts.back(); }
131 OptBase &add_option(const std::string &l, T &d, ArgType a)
132 { return add_option(0, l, d, a); }
134 std::string generate_usage(const std::string &) const;
135 std::string generate_help() const;
136 void operator()(unsigned, const char *const *);
139 OptBase &get_option(char);
140 OptBase &get_option(const std::string &);
141 unsigned process_long(const char *const *);
142 unsigned process_short(const char *const *);
145 template<> inline void GetOpt::Option<bool>::process_() { data=true; }
146 template<> inline void GetOpt::Option<unsigned>::process_() { ++data; }