1.1 --- a/lemon/arg_parser.cc	Sun Jul 13 20:09:47 2008 +0100
     1.2 +++ b/lemon/arg_parser.cc	Sun Jul 13 22:05:25 2008 +0100
     1.3 @@ -239,11 +239,11 @@
     1.4      return *this;
     1.5    }
     1.6  
     1.7 -  void ArgParser::show(std::ostream &os,Opts::iterator i)
     1.8 +  void ArgParser::show(std::ostream &os,Opts::const_iterator i) const
     1.9    {
    1.10      os << "-" << i->first;
    1.11      if(i->second.has_syn)
    1.12 -      for(Opts::iterator j=_opts.begin();j!=_opts.end();++j)
    1.13 +      for(Opts::const_iterator j=_opts.begin();j!=_opts.end();++j)
    1.14          if(j->second.syn&&j->second.help==i->first)
    1.15            os << "|-" << j->first;
    1.16      switch(i->second.type) {
    1.17 @@ -261,9 +261,9 @@
    1.18      }
    1.19    }
    1.20  
    1.21 -  void ArgParser::show(std::ostream &os,Groups::iterator i)
    1.22 +  void ArgParser::show(std::ostream &os,Groups::const_iterator i) const
    1.23    {
    1.24 -    GroupData::Opts::iterator o=i->second.opts.begin();
    1.25 +    GroupData::Opts::const_iterator o=i->second.opts.begin();
    1.26      while(o!=i->second.opts.end()) {
    1.27        show(os,_opts.find(*o));
    1.28        ++o;
    1.29 @@ -271,7 +271,7 @@
    1.30      }
    1.31    }
    1.32  
    1.33 -  void ArgParser::showHelp(Opts::iterator i)
    1.34 +  void ArgParser::showHelp(Opts::const_iterator i) const
    1.35    {
    1.36      if(i->second.help.size()==0||i->second.syn) return;
    1.37      std::cerr << "  ";
    1.38 @@ -279,20 +279,21 @@
    1.39      std::cerr << std::endl;
    1.40      std::cerr << "     " << i->second.help << std::endl;
    1.41    }
    1.42 -  void ArgParser::showHelp(std::vector<ArgParser::OtherArg>::iterator i)
    1.43 +  void ArgParser::showHelp(std::vector<ArgParser::OtherArg>::const_iterator i)
    1.44 +    const
    1.45    {
    1.46      if(i->help.size()==0) return;
    1.47      std::cerr << "  " << i->name << std::endl
    1.48                << "     " << i->help << std::endl;
    1.49    }
    1.50  
    1.51 -  void ArgParser::shortHelp()
    1.52 +  void ArgParser::shortHelp() const
    1.53    {
    1.54      const unsigned int LINE_LEN=77;
    1.55      const std::string indent("    ");
    1.56      std::cerr << "Usage:\n  " << _command_name;
    1.57      int pos=_command_name.size()+2;
    1.58 -    for(Groups::iterator g=_groups.begin();g!=_groups.end();++g) {
    1.59 +    for(Groups::const_iterator g=_groups.begin();g!=_groups.end();++g) {
    1.60        std::ostringstream cstr;
    1.61        cstr << ' ';
    1.62        if(!g->second.mandatory) cstr << '[';
    1.63 @@ -305,7 +306,7 @@
    1.64        std::cerr << cstr.str();
    1.65        pos+=cstr.str().size();
    1.66      }
    1.67 -    for(Opts::iterator i=_opts.begin();i!=_opts.end();++i)
    1.68 +    for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i)
    1.69        if(!i->second.ingroup&&!i->second.syn) {
    1.70          std::ostringstream cstr;
    1.71          cstr << ' ';
    1.72 @@ -319,7 +320,7 @@
    1.73          std::cerr << cstr.str();
    1.74          pos+=cstr.str().size();
    1.75        }
    1.76 -    for(std::vector<OtherArg>::iterator i=_others_help.begin();
    1.77 +    for(std::vector<OtherArg>::const_iterator i=_others_help.begin();
    1.78          i!=_others_help.end();++i)
    1.79        {
    1.80          std::ostringstream cstr;
    1.81 @@ -335,18 +336,18 @@
    1.82      std::cerr << std::endl;
    1.83    }
    1.84  
    1.85 -  void ArgParser::showHelp()
    1.86 +  void ArgParser::showHelp() const
    1.87    {
    1.88      shortHelp();
    1.89      std::cerr << "Where:\n";
    1.90 -    for(std::vector<OtherArg>::iterator i=_others_help.begin();
    1.91 +    for(std::vector<OtherArg>::const_iterator i=_others_help.begin();
    1.92          i!=_others_help.end();++i) showHelp(i);
    1.93 -    for(Opts::iterator i=_opts.begin();i!=_opts.end();++i) showHelp(i);
    1.94 +    for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i) showHelp(i);
    1.95      exit(1);
    1.96    }
    1.97  
    1.98  
    1.99 -  void ArgParser::unknownOpt(std::string arg)
   1.100 +  void ArgParser::unknownOpt(std::string arg) const
   1.101    {
   1.102      std::cerr << "\nUnknown option: " << arg << "\n";
   1.103      std::cerr << "\nType '" << _command_name <<
   1.104 @@ -354,7 +355,7 @@
   1.105      exit(1);
   1.106    }
   1.107  
   1.108 -  void ArgParser::requiresValue(std::string arg, OptType t)
   1.109 +  void ArgParser::requiresValue(std::string arg, OptType t) const
   1.110    {
   1.111      std::cerr << "Argument '" << arg << "' requires a";
   1.112      switch(t) {
   1.113 @@ -375,10 +376,10 @@
   1.114    }
   1.115  
   1.116  
   1.117 -  void ArgParser::checkMandatories()
   1.118 +  void ArgParser::checkMandatories() const
   1.119    {
   1.120      bool ok=true;
   1.121 -    for(Opts::iterator i=_opts.begin();i!=_opts.end();++i)
   1.122 +    for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i)
   1.123        if(i->second.mandatory&&!i->second.set)
   1.124          {
   1.125            if(ok)
   1.126 @@ -387,18 +388,18 @@
   1.127            ok=false;
   1.128            showHelp(i);
   1.129          }
   1.130 -    for(Groups::iterator i=_groups.begin();i!=_groups.end();++i)
   1.131 +    for(Groups::const_iterator i=_groups.begin();i!=_groups.end();++i)
   1.132        if(i->second.mandatory||i->second.only_one)
   1.133          {
   1.134            int set=0;
   1.135 -          for(GroupData::Opts::iterator o=i->second.opts.begin();
   1.136 +          for(GroupData::Opts::const_iterator o=i->second.opts.begin();
   1.137                o!=i->second.opts.end();++o)
   1.138              if(_opts.find(*o)->second.set) ++set;
   1.139            if(i->second.mandatory&&!set) {
   1.140              std::cerr << _command_name <<
   1.141                ": At least one of the following arguments is mandatory.\n";
   1.142              ok=false;
   1.143 -            for(GroupData::Opts::iterator o=i->second.opts.begin();
   1.144 +            for(GroupData::Opts::const_iterator o=i->second.opts.begin();
   1.145                  o!=i->second.opts.end();++o)
   1.146                showHelp(_opts.find(*o));
   1.147            }
   1.148 @@ -406,7 +407,7 @@
   1.149              std::cerr << _command_name <<
   1.150                ": At most one of the following arguments can be given.\n";
   1.151              ok=false;
   1.152 -            for(GroupData::Opts::iterator o=i->second.opts.begin();
   1.153 +            for(GroupData::Opts::const_iterator o=i->second.opts.begin();
   1.154                  o!=i->second.opts.end();++o)
   1.155                showHelp(_opts.find(*o));
   1.156            }

     2.1 --- a/lemon/arg_parser.h	Sun Jul 13 20:09:47 2008 +0100
     2.2 +++ b/lemon/arg_parser.h	Sun Jul 13 22:05:25 2008 +0100
     2.3 @@ -271,17 +271,20 @@
     2.4  
     2.5      ///@}
     2.6  
     2.7 -    void show(std::ostream &os,Opts::iterator i);
     2.8 -    void show(std::ostream &os,Groups::iterator i);
     2.9 -    void showHelp(Opts::iterator i);
    2.10 -    void showHelp(std::vector<OtherArg>::iterator i);
    2.11 -    void shortHelp();
    2.12 -    void showHelp();
    2.13 +  private:
    2.14 +    void show(std::ostream &os,Opts::const_iterator i) const;
    2.15 +    void show(std::ostream &os,Groups::const_iterator i) const;
    2.16 +    void showHelp(Opts::const_iterator i) const;
    2.17 +    void showHelp(std::vector<OtherArg>::const_iterator i) const;
    2.18  
    2.19 -    void unknownOpt(std::string arg);
    2.20 +    void unknownOpt(std::string arg) const;
    2.21  
    2.22 -    void requiresValue(std::string arg, OptType t);
    2.23 -    void checkMandatories();
    2.24 +    void requiresValue(std::string arg, OptType t) const;
    2.25 +    void checkMandatories() const;
    2.26 +
    2.27 +    void shortHelp() const;
    2.28 +    void showHelp() const;
    2.29 +  public:
    2.30  
    2.31      ///Start the parsing process
    2.32      ArgParser &parse();
    2.33 @@ -293,12 +296,12 @@
    2.34      }
    2.35  
    2.36      ///Give back the command name (the 0th argument)
    2.37 -    const std::string &commandName() { return _command_name; }
    2.38 +    const std::string &commandName() const { return _command_name; }
    2.39  
    2.40      ///Check if an opion has been given to the command.
    2.41 -    bool given(std::string op)
    2.42 +    bool given(std::string op) const
    2.43      {
    2.44 -      Opts::iterator i = _opts.find(op);
    2.45 +      Opts::const_iterator i = _opts.find(op);
    2.46        return i!=_opts.end()?i->second.set:false;
    2.47      }
    2.48  
    2.49 @@ -311,15 +314,15 @@
    2.50      ///throws an exception (i.e. it performs runtime type checking).
    2.51      class RefType
    2.52      {
    2.53 -      ArgParser &_parser;
    2.54 +      const ArgParser &_parser;
    2.55        std::string _name;
    2.56      public:
    2.57        ///\e
    2.58 -      RefType(ArgParser &p,const std::string &n) :_parser(p),_name(n) {}
    2.59 +      RefType(const ArgParser &p,const std::string &n) :_parser(p),_name(n) {}
    2.60        ///\e
    2.61        operator bool()
    2.62        {
    2.63 -        Opts::iterator i = _parser._opts.find(_name);
    2.64 +        Opts::const_iterator i = _parser._opts.find(_name);
    2.65          LEMON_ASSERT(i!=_parser._opts.end(),
    2.66                       std::string()+"Unkown option: '"+_name+"'");
    2.67          LEMON_ASSERT(i->second.type==ArgParser::BOOL,
    2.68 @@ -329,7 +332,7 @@
    2.69        ///\e
    2.70        operator std::string()
    2.71        {
    2.72 -        Opts::iterator i = _parser._opts.find(_name);
    2.73 +        Opts::const_iterator i = _parser._opts.find(_name);
    2.74          LEMON_ASSERT(i!=_parser._opts.end(),
    2.75                       std::string()+"Unkown option: '"+_name+"'");
    2.76          LEMON_ASSERT(i->second.type==ArgParser::STRING,
    2.77 @@ -339,7 +342,7 @@
    2.78        ///\e
    2.79        operator double()
    2.80        {
    2.81 -        Opts::iterator i = _parser._opts.find(_name);
    2.82 +        Opts::const_iterator i = _parser._opts.find(_name);
    2.83          LEMON_ASSERT(i!=_parser._opts.end(),
    2.84                       std::string()+"Unkown option: '"+_name+"'");
    2.85          LEMON_ASSERT(i->second.type==ArgParser::DOUBLE ||
    2.86 @@ -351,7 +354,7 @@
    2.87        ///\e
    2.88        operator int()
    2.89        {
    2.90 -        Opts::iterator i = _parser._opts.find(_name);
    2.91 +        Opts::const_iterator i = _parser._opts.find(_name);
    2.92          LEMON_ASSERT(i!=_parser._opts.end(),
    2.93                       std::string()+"Unkown option: '"+_name+"'");
    2.94          LEMON_ASSERT(i->second.type==ArgParser::INTEGER,
    2.95 @@ -365,7 +368,7 @@
    2.96  
    2.97      ///Give back the value of an option.
    2.98      ///\sa RefType
    2.99 -    RefType operator[](const std::string &n)
   2.100 +    RefType operator[](const std::string &n) const
   2.101      {
   2.102        return RefType(*this, n);
   2.103      }
   2.104 @@ -374,7 +377,7 @@
   2.105  
   2.106      ///Give back a reference to a vector consisting of the program arguments
   2.107      ///not starting with a '-' character.
   2.108 -    std::vector<std::string> &files() { return _file_args; }
   2.109 +    const std::vector<std::string> &files() const { return _file_args; }
   2.110  
   2.111    };
   2.112  }