lemon: lemon/arg_parser.cc@60eecd3fe37a

     1 /* -*- mode: C++; indent-tabs-mode: nil; -*-

     2  *

     3  * This file is a part of LEMON, a generic C++ optimization library.

     4  *

     5  * Copyright (C) 2003-2008

     6  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

     7  * (Egervary Research Group on Combinatorial Optimization, EGRES).

     8  *

     9  * Permission to use, modify and distribute this software is granted

    10  * provided that this copyright notice appears in all copies. For

    11  * precise terms see the accompanying LICENSE file.

    12  *

    13  * This software is provided "AS IS" with no warranty of any kind,

    14  * express or implied, and with no claim as to its suitability for any

    15  * purpose.

    16  *

    17  */

    19 #include <lemon/arg_parser.h>

    21 namespace lemon {

    23   void ArgParser::_showHelp(void *p)

    24   {

    25     (static_cast<ArgParser*>(p))->showHelp();

    26     exit(1);

    27   }

    29   ArgParser::ArgParser(int argc, const char **argv) :_argc(argc), _argv(argv),

    30                                                      _command_name(argv[0]) {

    31     funcOption("-help","Print a short help message",_showHelp,this);

    32     synonym("help","-help");

    33     synonym("h","-help");

    35   }

    37   ArgParser::~ArgParser()

    38   {

    39     for(Opts::iterator i=_opts.begin();i!=_opts.end();++i)

    40       if(i->second.self_delete)

    41         switch(i->second.type) {

    42         case BOOL:

    43           delete i->second.bool_p;

    44           break;

    45         case STRING:

    46           delete i->second.string_p;

    47           break;

    48         case DOUBLE:

    49           delete i->second.double_p;

    50           break;

    51         case INTEGER:

    52           delete i->second.int_p;

    53           break;

    54         case UNKNOWN:

    55           break;

    56         case FUNC:

    57           break;

    58         }

    59   }

    62   ArgParser &ArgParser::intOption(const std::string &name,

    63                                const std::string &help,

    64                                int value, bool obl)

    65   {

    66     ParData p;

    67     p.int_p=new int(value);

    68     p.self_delete=true;

    69     p.help=help;

    70     p.type=INTEGER;

    71     p.mandatory=obl;

    72     _opts[name]=p;

    73     return *this;

    74   }

    76   ArgParser &ArgParser::doubleOption(const std::string &name,

    77                                const std::string &help,

    78                                double value, bool obl)

    79   {

    80     ParData p;

    81     p.double_p=new double(value);

    82     p.self_delete=true;

    83     p.help=help;

    84     p.type=DOUBLE;

    85     p.mandatory=obl;

    86     _opts[name]=p;

    87     return *this;

    88   }

    90   ArgParser &ArgParser::boolOption(const std::string &name,

    91                                const std::string &help,

    92                                bool value, bool obl)

    93   {

    94     ParData p;

    95     p.bool_p=new bool(value);

    96     p.self_delete=true;

    97     p.help=help;

    98     p.type=BOOL;

    99     p.mandatory=obl;

   100     _opts[name]=p;

   101     return *this;

   102   }

   104   ArgParser &ArgParser::stringOption(const std::string &name,

   105                                const std::string &help,

   106                                std::string value, bool obl)

   107   {

   108     ParData p;

   109     p.string_p=new std::string(value);

   110     p.self_delete=true;

   111     p.help=help;

   112     p.type=STRING;

   113     p.mandatory=obl;

   114     _opts[name]=p;

   115     return *this;

   116   }

   118   ArgParser &ArgParser::refOption(const std::string &name,

   119                                const std::string &help,

   120                                int &ref, bool obl)

   121   {

   122     ParData p;

   123     p.int_p=&ref;

   124     p.self_delete=false;

   125     p.help=help;

   126     p.type=INTEGER;

   127     p.mandatory=obl;

   128     _opts[name]=p;

   129     return *this;

   130   }

   132   ArgParser &ArgParser::refOption(const std::string &name,

   133                                   const std::string &help,

   134                                   double &ref, bool obl)

   135   {

   136     ParData p;

   137     p.double_p=&ref;

   138     p.self_delete=false;

   139     p.help=help;

   140     p.type=DOUBLE;

   141     p.mandatory=obl;

   142     _opts[name]=p;

   143     return *this;

   144   }

   146   ArgParser &ArgParser::refOption(const std::string &name,

   147                                   const std::string &help,

   148                                   bool &ref, bool obl)

   149   {

   150     ParData p;

   151     p.bool_p=&ref;

   152     p.self_delete=false;

   153     p.help=help;

   154     p.type=BOOL;

   155     p.mandatory=obl;

   156     _opts[name]=p;

   158     ref = false;

   160     return *this;

   161   }

   163   ArgParser &ArgParser::refOption(const std::string &name,

   164                                const std::string &help,

   165                                std::string &ref, bool obl)

   166   {

   167     ParData p;

   168     p.string_p=&ref;

   169     p.self_delete=false;

   170     p.help=help;

   171     p.type=STRING;

   172     p.mandatory=obl;

   173     _opts[name]=p;

   174     return *this;

   175   }

   177   ArgParser &ArgParser::funcOption(const std::string &name,

   178                                const std::string &help,

   179                                void (*func)(void *),void *data)

   180   {

   181     ParData p;

   182     p.func_p.p=func;

   183     p.func_p.data=data;

   184     p.self_delete=false;

   185     p.help=help;

   186     p.type=FUNC;

   187     p.mandatory=false;

   188     _opts[name]=p;

   189     return *this;

   190   }

   192   ArgParser &ArgParser::optionGroup(const std::string &group,

   193                                     const std::string &opt)

   194   {

   195     Opts::iterator i = _opts.find(opt);

   196     LEMON_ASSERT(i!=_opts.end(), "Unknown option: '"+opt+"'");

   197     LEMON_ASSERT(!(i->second.ingroup),

   198                  "Option already in option group: '"+opt+"'");

   199     GroupData &g=_groups[group];

   200     g.opts.push_back(opt);

   201     i->second.ingroup=true;

   202     return *this;

   203   }

   205   ArgParser &ArgParser::onlyOneGroup(const std::string &group)

   206   {

   207     GroupData &g=_groups[group];

   208     g.only_one=true;

   209     return *this;

   210   }

   212   ArgParser &ArgParser::synonym(const std::string &syn,

   213                                 const std::string &opt)

   214   {

   215     Opts::iterator o = _opts.find(opt);

   216     Opts::iterator s = _opts.find(syn);

   217     LEMON_ASSERT(o!=_opts.end(), "Unknown option: '"+opt+"'");

   218     LEMON_ASSERT(s==_opts.end(), "Option already used: '"+syn+"'");

   219     ParData p;

   220     p.help=opt;

   221     p.mandatory=false;

   222     p.syn=true;

   223     _opts[syn]=p;

   224     o->second.has_syn=true;

   225     return *this;

   226   }

   228   ArgParser &ArgParser::mandatoryGroup(const std::string &group)

   229   {

   230     GroupData &g=_groups[group];

   231     g.mandatory=true;

   232     return *this;

   233   }

   235   ArgParser &ArgParser::other(const std::string &name,

   236                               const std::string &help)

   237   {

   238     _others_help.push_back(OtherArg(name,help));

   239     return *this;

   240   }

   242   void ArgParser::show(std::ostream &os,Opts::const_iterator i) const

   243   {

   244     os << "-" << i->first;

   245     if(i->second.has_syn)

   246       for(Opts::const_iterator j=_opts.begin();j!=_opts.end();++j)

   247         if(j->second.syn&&j->second.help==i->first)

   248           os << "|-" << j->first;

   249     switch(i->second.type) {

   250     case STRING:

   251       os << " str";

   252       break;

   253     case INTEGER:

   254       os << " int";

   255       break;

   256     case DOUBLE:

   257       os << " num";

   258       break;

   259     default:

   260       break;

   261     }

   262   }

   264   void ArgParser::show(std::ostream &os,Groups::const_iterator i) const

   265   {

   266     GroupData::Opts::const_iterator o=i->second.opts.begin();

   267     while(o!=i->second.opts.end()) {

   268       show(os,_opts.find(*o));

   269       ++o;

   270       if(o!=i->second.opts.end()) os<<'|';

   271     }

   272   }

   274   void ArgParser::showHelp(Opts::const_iterator i) const

   275   {

   276     if(i->second.help.size()==0||i->second.syn) return;

   277     std::cerr << "  ";

   278     show(std::cerr,i);

   279     std::cerr << std::endl;

   280     std::cerr << "     " << i->second.help << std::endl;

   281   }

   282   void ArgParser::showHelp(std::vector<ArgParser::OtherArg>::const_iterator i)

   283     const

   284   {

   285     if(i->help.size()==0) return;

   286     std::cerr << "  " << i->name << std::endl

   287               << "     " << i->help << std::endl;

   288   }

   290   void ArgParser::shortHelp() const

   291   {

   292     const unsigned int LINE_LEN=77;

   293     const std::string indent("    ");

   294     std::cerr << "Usage:\n  " << _command_name;

   295     int pos=_command_name.size()+2;

   296     for(Groups::const_iterator g=_groups.begin();g!=_groups.end();++g) {

   297       std::ostringstream cstr;

   298       cstr << ' ';

   299       if(!g->second.mandatory) cstr << '[';

   300       show(cstr,g);

   301       if(!g->second.mandatory) cstr << ']';

   302       if(pos+cstr.str().size()>LINE_LEN) {

   303         std::cerr << std::endl << indent;

   304         pos=indent.size();

   305       }

   306       std::cerr << cstr.str();

   307       pos+=cstr.str().size();

   308     }

   309     for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i)

   310       if(!i->second.ingroup&&!i->second.syn) {

   311         std::ostringstream cstr;

   312         cstr << ' ';

   313         if(!i->second.mandatory) cstr << '[';

   314         show(cstr,i);

   315         if(!i->second.mandatory) cstr << ']';

   316         if(pos+cstr.str().size()>LINE_LEN) {

   317           std::cerr << std::endl << indent;

   318           pos=indent.size();

   319         }

   320         std::cerr << cstr.str();

   321         pos+=cstr.str().size();

   322       }

   323     for(std::vector<OtherArg>::const_iterator i=_others_help.begin();

   324         i!=_others_help.end();++i)

   325       {

   326         std::ostringstream cstr;

   327         cstr << ' ' << i->name;

   329         if(pos+cstr.str().size()>LINE_LEN) {

   330           std::cerr << std::endl << indent;

   331           pos=indent.size();

   332         }

   333         std::cerr << cstr.str();

   334         pos+=cstr.str().size();

   335       }

   336     std::cerr << std::endl;

   337   }

   339   void ArgParser::showHelp() const

   340   {

   341     shortHelp();

   342     std::cerr << "Where:\n";

   343     for(std::vector<OtherArg>::const_iterator i=_others_help.begin();

   344         i!=_others_help.end();++i) showHelp(i);

   345     for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i) showHelp(i);

   346     exit(1);

   347   }

   350   void ArgParser::unknownOpt(std::string arg) const

   351   {

   352     std::cerr << "\nUnknown option: " << arg << "\n";

   353     std::cerr << "\nType '" << _command_name <<

   354       " --help' to obtain a short summary on the usage.\n\n";

   355     exit(1);

   356   }

   358   void ArgParser::requiresValue(std::string arg, OptType t) const

   359   {

   360     std::cerr << "Argument '" << arg << "' requires a";

   361     switch(t) {

   362     case STRING:

   363       std::cerr << " string";

   364       break;

   365     case INTEGER:

   366       std::cerr << "n integer";

   367       break;

   368     case DOUBLE:

   369       std::cerr << " floating point";

   370       break;

   371     default:

   372       break;

   373     }

   374     std::cerr << " value\n\n";

   375     showHelp();

   376   }

   379   void ArgParser::checkMandatories() const

   380   {

   381     bool ok=true;

   382     for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i)

   383       if(i->second.mandatory&&!i->second.set)

   384         {

   385           if(ok)

   386             std::cerr << _command_name

   387                       << ": The following mandatory arguments are missing.\n";

   388           ok=false;

   389           showHelp(i);

   390         }

   391     for(Groups::const_iterator i=_groups.begin();i!=_groups.end();++i)

   392       if(i->second.mandatory||i->second.only_one)

   393         {

   394           int set=0;

   395           for(GroupData::Opts::const_iterator o=i->second.opts.begin();

   396               o!=i->second.opts.end();++o)

   397             if(_opts.find(*o)->second.set) ++set;

   398           if(i->second.mandatory&&!set) {

   399             std::cerr << _command_name <<

   400               ": At least one of the following arguments is mandatory.\n";

   401             ok=false;

   402             for(GroupData::Opts::const_iterator o=i->second.opts.begin();

   403                 o!=i->second.opts.end();++o)

   404               showHelp(_opts.find(*o));

   405           }

   406           if(i->second.only_one&&set>1) {

   407             std::cerr << _command_name <<

   408               ": At most one of the following arguments can be given.\n";

   409             ok=false;

   410             for(GroupData::Opts::const_iterator o=i->second.opts.begin();

   411                 o!=i->second.opts.end();++o)

   412               showHelp(_opts.find(*o));

   413           }

   414         }

   415     if(!ok) {

   416       std::cerr << "\nType '" << _command_name <<

   417         " --help' to obtain a short summary on the usage.\n\n";

   418       exit(1);

   419     }

   420   }

   422   ArgParser &ArgParser::parse()

   423   {

   424     for(int ar=1; ar<_argc; ++ar) {

   425       std::string arg(_argv[ar]);

   426       if (arg[0] != '-' || arg.size() == 1) {

   427         _file_args.push_back(arg);

   428       }

   429       else {

   430         Opts::iterator i = _opts.find(arg.substr(1));

   431         if(i==_opts.end()) unknownOpt(arg);

   432         else {

   433           if(i->second.syn) i=_opts.find(i->second.help);

   434           ParData &p(i->second);

   435           if (p.type==BOOL) *p.bool_p=true;

   436           else if (p.type==FUNC) p.func_p.p(p.func_p.data);

   437           else if(++ar==_argc) requiresValue(arg, p.type);

   438           else {

   439             std::string val(_argv[ar]);

   440             std::istringstream vals(val);

   441             switch(p.type) {

   442             case STRING:

   443               *p.string_p=val;

   444               break;

   445             case INTEGER:

   446               vals >> *p.int_p;

   447               break;

   448             case DOUBLE:

   449               vals >> *p.double_p;

   450               break;

   451             default:

   452               break;

   453             }

   454             if(p.type!=STRING&&(!vals||!vals.eof()))

   455               requiresValue(arg, p.type);

   456           }

   457           p.set = true;

   458         }

   459       }

   460     }

   461     checkMandatories();

   463     return *this;

   464   }

   466 }

author	Alpar Juttner <alpar@cs.elte.hu>
	Sun, 13 Jul 2008 22:05:25 +0100
changeset 214	60eecd3fe37a
parent 210	81cfc04531e8
child 311	c887e703b566
permissions	-rw-r--r--