lemon-main: lemon/arg_parser.cc@fa341dd6ab23

     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 * const *argv)

    30     :_argc(argc), _argv(argv), _command_name(argv[0]) {

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

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

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

    34   }

    36   ArgParser::~ArgParser()

    37   {

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

    39       if(i->second.self_delete)

    40         switch(i->second.type) {

    41         case BOOL:

    42           delete i->second.bool_p;

    43           break;

    44         case STRING:

    45           delete i->second.string_p;

    46           break;

    47         case DOUBLE:

    48           delete i->second.double_p;

    49           break;

    50         case INTEGER:

    51           delete i->second.int_p;

    52           break;

    53         case UNKNOWN:

    54           break;

    55         case FUNC:

    56           break;

    57         }

    58   }

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

    62                                const std::string &help,

    63                                int value, bool obl)

    64   {

    65     ParData p;

    66     p.int_p=new int(value);

    67     p.self_delete=true;

    68     p.help=help;

    69     p.type=INTEGER;

    70     p.mandatory=obl;

    71     _opts[name]=p;

    72     return *this;

    73   }

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

    76                                const std::string &help,

    77                                double value, bool obl)

    78   {

    79     ParData p;

    80     p.double_p=new double(value);

    81     p.self_delete=true;

    82     p.help=help;

    83     p.type=DOUBLE;

    84     p.mandatory=obl;

    85     _opts[name]=p;

    86     return *this;

    87   }

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

    90                                const std::string &help,

    91                                bool value, bool obl)

    92   {

    93     ParData p;

    94     p.bool_p=new bool(value);

    95     p.self_delete=true;

    96     p.help=help;

    97     p.type=BOOL;

    98     p.mandatory=obl;

    99     _opts[name]=p;

   100     return *this;

   101   }

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

   104                                const std::string &help,

   105                                std::string value, bool obl)

   106   {

   107     ParData p;

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

   109     p.self_delete=true;

   110     p.help=help;

   111     p.type=STRING;

   112     p.mandatory=obl;

   113     _opts[name]=p;

   114     return *this;

   115   }

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

   118                                const std::string &help,

   119                                int &ref, bool obl)

   120   {

   121     ParData p;

   122     p.int_p=&ref;

   123     p.self_delete=false;

   124     p.help=help;

   125     p.type=INTEGER;

   126     p.mandatory=obl;

   127     _opts[name]=p;

   128     return *this;

   129   }

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

   132                                   const std::string &help,

   133                                   double &ref, bool obl)

   134   {

   135     ParData p;

   136     p.double_p=&ref;

   137     p.self_delete=false;

   138     p.help=help;

   139     p.type=DOUBLE;

   140     p.mandatory=obl;

   141     _opts[name]=p;

   142     return *this;

   143   }

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

   146                                   const std::string &help,

   147                                   bool &ref, bool obl)

   148   {

   149     ParData p;

   150     p.bool_p=&ref;

   151     p.self_delete=false;

   152     p.help=help;

   153     p.type=BOOL;

   154     p.mandatory=obl;

   155     _opts[name]=p;

   157     ref = false;

   159     return *this;

   160   }

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

   163                                const std::string &help,

   164                                std::string &ref, bool obl)

   165   {

   166     ParData p;

   167     p.string_p=&ref;

   168     p.self_delete=false;

   169     p.help=help;

   170     p.type=STRING;

   171     p.mandatory=obl;

   172     _opts[name]=p;

   173     return *this;

   174   }

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

   177                                const std::string &help,

   178                                void (*func)(void *),void *data)

   179   {

   180     ParData p;

   181     p.func_p.p=func;

   182     p.func_p.data=data;

   183     p.self_delete=false;

   184     p.help=help;

   185     p.type=FUNC;

   186     p.mandatory=false;

   187     _opts[name]=p;

   188     return *this;

   189   }

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

   192                                     const std::string &opt)

   193   {

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

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

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

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

   198     GroupData &g=_groups[group];

   199     g.opts.push_back(opt);

   200     i->second.ingroup=true;

   201     return *this;

   202   }

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

   205   {

   206     GroupData &g=_groups[group];

   207     g.only_one=true;

   208     return *this;

   209   }

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

   212                                 const std::string &opt)

   213   {

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

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

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

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

   218     ParData p;

   219     p.help=opt;

   220     p.mandatory=false;

   221     p.syn=true;

   222     _opts[syn]=p;

   223     o->second.has_syn=true;

   224     return *this;

   225   }

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

   228   {

   229     GroupData &g=_groups[group];

   230     g.mandatory=true;

   231     return *this;

   232   }

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

   235                               const std::string &help)

   236   {

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

   238     return *this;

   239   }

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

   242   {

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

   244     if(i->second.has_syn)

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

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

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

   248     switch(i->second.type) {

   249     case STRING:

   250       os << " str";

   251       break;

   252     case INTEGER:

   253       os << " int";

   254       break;

   255     case DOUBLE:

   256       os << " num";

   257       break;

   258     default:

   259       break;

   260     }

   261   }

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

   264   {

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

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

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

   268       ++o;

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

   270     }

   271   }

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

   274   {

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

   276     std::cerr << "  ";

   277     show(std::cerr,i);

   278     std::cerr << std::endl;

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

   280   }

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

   282     const

   283   {

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

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

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

   287   }

   289   void ArgParser::shortHelp() const

   290   {

   291     const unsigned int LINE_LEN=77;

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

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

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

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

   296       std::ostringstream cstr;

   297       cstr << ' ';

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

   299       show(cstr,g);

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

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

   302         std::cerr << std::endl << indent;

   303         pos=indent.size();

   304       }

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

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

   307     }

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

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

   310         std::ostringstream cstr;

   311         cstr << ' ';

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

   313         show(cstr,i);

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

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

   316           std::cerr << std::endl << indent;

   317           pos=indent.size();

   318         }

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

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

   321       }

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

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

   324       {

   325         std::ostringstream cstr;

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

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

   329           std::cerr << std::endl << indent;

   330           pos=indent.size();

   331         }

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

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

   334       }

   335     std::cerr << std::endl;

   336   }

   338   void ArgParser::showHelp() const

   339   {

   340     shortHelp();

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

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

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

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

   345     exit(1);

   346   }

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

   350   {

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

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

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

   354     exit(1);

   355   }

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

   358   {

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

   360     switch(t) {

   361     case STRING:

   362       std::cerr << " string";

   363       break;

   364     case INTEGER:

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

   366       break;

   367     case DOUBLE:

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

   369       break;

   370     default:

   371       break;

   372     }

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

   374     showHelp();

   375   }

   378   void ArgParser::checkMandatories() const

   379   {

   380     bool ok=true;

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

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

   383         {

   384           if(ok)

   385             std::cerr << _command_name

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

   387           ok=false;

   388           showHelp(i);

   389         }

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

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

   392         {

   393           int set=0;

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

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

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

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

   398             std::cerr << _command_name <<

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

   400             ok=false;

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

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

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

   404           }

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

   406             std::cerr << _command_name <<

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

   408             ok=false;

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

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

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

   412           }

   413         }

   414     if(!ok) {

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

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

   417       exit(1);

   418     }

   419   }

   421   ArgParser &ArgParser::parse()

   422   {

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

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

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

   426         _file_args.push_back(arg);

   427       }

   428       else {

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

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

   431         else {

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

   433           ParData &p(i->second);

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

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

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

   437           else {

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

   439             std::istringstream vals(val);

   440             switch(p.type) {

   441             case STRING:

   442               *p.string_p=val;

   443               break;

   444             case INTEGER:

   445               vals >> *p.int_p;

   446               break;

   447             case DOUBLE:

   448               vals >> *p.double_p;

   449               break;

   450             default:

   451               break;

   452             }

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

   454               requiresValue(arg, p.type);

   455           }

   456           p.set = true;

   457         }

   458       }

   459     }

   460     checkMandatories();

   462     return *this;

   463   }

   465 }

author	Alpar Juttner <alpar@cs.elte.hu>
	Mon, 01 Dec 2008 14:11:31 +0000
changeset 400	fa341dd6ab23
parent 214	60eecd3fe37a
child 440	88ed40ad0d4f
permissions	-rw-r--r--