lemon-main: lemon/arg_parser.cc@c6aa2cc1af04

     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) 2003-2010

     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::_terminate(ArgParserException::Reason reason) const

    24   {

    25     if(_exit_on_problems)

    26       exit(1);

    27     else throw(ArgParserException(reason));

    28   }

    31   void ArgParser::_showHelp(void *p)

    32   {

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

    34     (static_cast<ArgParser*>(p))->_terminate(ArgParserException::HELP);

    35   }

    37   ArgParser::ArgParser(int argc, const char * const *argv)

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

    39     _exit_on_problems(true) {

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

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

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

    43   }

    45   ArgParser::~ArgParser()

    46   {

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

    48       if(i->second.self_delete)

    49         switch(i->second.type) {

    50         case BOOL:

    51           delete i->second.bool_p;

    52           break;

    53         case STRING:

    54           delete i->second.string_p;

    55           break;

    56         case DOUBLE:

    57           delete i->second.double_p;

    58           break;

    59         case INTEGER:

    60           delete i->second.int_p;

    61           break;

    62         case UNKNOWN:

    63           break;

    64         case FUNC:

    65           break;

    66         }

    67   }

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

    71                                const std::string &help,

    72                                int value, bool obl)

    73   {

    74     ParData p;

    75     p.int_p=new int(value);

    76     p.self_delete=true;

    77     p.help=help;

    78     p.type=INTEGER;

    79     p.mandatory=obl;

    80     _opts[name]=p;

    81     return *this;

    82   }

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

    85                                const std::string &help,

    86                                double value, bool obl)

    87   {

    88     ParData p;

    89     p.double_p=new double(value);

    90     p.self_delete=true;

    91     p.help=help;

    92     p.type=DOUBLE;

    93     p.mandatory=obl;

    94     _opts[name]=p;

    95     return *this;

    96   }

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

    99                                const std::string &help,

   100                                bool value, bool obl)

   101   {

   102     ParData p;

   103     p.bool_p=new bool(value);

   104     p.self_delete=true;

   105     p.help=help;

   106     p.type=BOOL;

   107     p.mandatory=obl;

   108     _opts[name]=p;

   109     return *this;

   110   }

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

   113                                const std::string &help,

   114                                std::string value, bool obl)

   115   {

   116     ParData p;

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

   118     p.self_delete=true;

   119     p.help=help;

   120     p.type=STRING;

   121     p.mandatory=obl;

   122     _opts[name]=p;

   123     return *this;

   124   }

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

   127                                const std::string &help,

   128                                int &ref, bool obl)

   129   {

   130     ParData p;

   131     p.int_p=&ref;

   132     p.self_delete=false;

   133     p.help=help;

   134     p.type=INTEGER;

   135     p.mandatory=obl;

   136     _opts[name]=p;

   137     return *this;

   138   }

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

   141                                   const std::string &help,

   142                                   double &ref, bool obl)

   143   {

   144     ParData p;

   145     p.double_p=&ref;

   146     p.self_delete=false;

   147     p.help=help;

   148     p.type=DOUBLE;

   149     p.mandatory=obl;

   150     _opts[name]=p;

   151     return *this;

   152   }

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

   155                                   const std::string &help,

   156                                   bool &ref, bool obl)

   157   {

   158     ParData p;

   159     p.bool_p=&ref;

   160     p.self_delete=false;

   161     p.help=help;

   162     p.type=BOOL;

   163     p.mandatory=obl;

   164     _opts[name]=p;

   166     ref = false;

   168     return *this;

   169   }

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

   172                                const std::string &help,

   173                                std::string &ref, bool obl)

   174   {

   175     ParData p;

   176     p.string_p=&ref;

   177     p.self_delete=false;

   178     p.help=help;

   179     p.type=STRING;

   180     p.mandatory=obl;

   181     _opts[name]=p;

   182     return *this;

   183   }

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

   186                                const std::string &help,

   187                                void (*func)(void *),void *data)

   188   {

   189     ParData p;

   190     p.func_p.p=func;

   191     p.func_p.data=data;

   192     p.self_delete=false;

   193     p.help=help;

   194     p.type=FUNC;

   195     p.mandatory=false;

   196     _opts[name]=p;

   197     return *this;

   198   }

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

   201                                     const std::string &opt)

   202   {

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

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

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

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

   207     GroupData &g=_groups[group];

   208     g.opts.push_back(opt);

   209     i->second.ingroup=true;

   210     return *this;

   211   }

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

   214   {

   215     GroupData &g=_groups[group];

   216     g.only_one=true;

   217     return *this;

   218   }

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

   221                                 const std::string &opt)

   222   {

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

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

   225     LEMON_ASSERT(_opts.find(syn)==_opts.end(),

   226                  "Option already used: '"+syn+"'");

   227     ParData p;

   228     p.help=opt;

   229     p.mandatory=false;

   230     p.syn=true;

   231     _opts[syn]=p;

   232     o->second.has_syn=true;

   233     return *this;

   234   }

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

   237   {

   238     GroupData &g=_groups[group];

   239     g.mandatory=true;

   240     return *this;

   241   }

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

   244                               const std::string &help)

   245   {

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

   247     return *this;

   248   }

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

   251   {

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

   253     if(i->second.has_syn)

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

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

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

   257     switch(i->second.type) {

   258     case STRING:

   259       os << " str";

   260       break;

   261     case INTEGER:

   262       os << " int";

   263       break;

   264     case DOUBLE:

   265       os << " num";

   266       break;

   267     default:

   268       break;

   269     }

   270   }

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

   273   {

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

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

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

   277       ++o;

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

   279     }

   280   }

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

   283   {

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

   285     std::cerr << "  ";

   286     show(std::cerr,i);

   287     std::cerr << std::endl;

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

   289   }

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

   291     const

   292   {

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

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

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

   296   }

   298   void ArgParser::shortHelp() const

   299   {

   300     const unsigned int LINE_LEN=77;

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

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

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

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

   305       std::ostringstream cstr;

   306       cstr << ' ';

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

   308       show(cstr,g);

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

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

   311         std::cerr << std::endl << indent;

   312         pos=indent.size();

   313       }

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

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

   316     }

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

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

   319         std::ostringstream cstr;

   320         cstr << ' ';

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

   322         show(cstr,i);

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

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

   325           std::cerr << std::endl << indent;

   326           pos=indent.size();

   327         }

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

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

   330       }

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

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

   333       {

   334         std::ostringstream cstr;

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

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

   338           std::cerr << std::endl << indent;

   339           pos=indent.size();

   340         }

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

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

   343       }

   344     std::cerr << std::endl;

   345   }

   347   void ArgParser::showHelp() const

   348   {

   349     shortHelp();

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

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

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

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

   354     _terminate(ArgParserException::HELP);

   355   }

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

   359   {

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

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

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

   363     _terminate(ArgParserException::UNKNOWN_OPT);

   364   }

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

   367   {

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

   369     switch(t) {

   370     case STRING:

   371       std::cerr << " string";

   372       break;

   373     case INTEGER:

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

   375       break;

   376     case DOUBLE:

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

   378       break;

   379     default:

   380       break;

   381     }

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

   383     showHelp();

   384   }

   387   void ArgParser::checkMandatories() const

   388   {

   389     bool ok=true;

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

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

   392         {

   393           if(ok)

   394             std::cerr << _command_name

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

   396           ok=false;

   397           showHelp(i);

   398         }

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

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

   401         {

   402           int set=0;

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

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

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

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

   407             std::cerr << _command_name <<

   408               ": At least one of the following arguments is mandatory.\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           if(i->second.only_one&&set>1) {

   415             std::cerr << _command_name <<

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

   417             ok=false;

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

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

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

   421           }

   422         }

   423     if(!ok) {

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

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

   426       _terminate(ArgParserException::INVALID_OPT);

   427     }

   428   }

   430   ArgParser &ArgParser::parse()

   431   {

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

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

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

   435         _file_args.push_back(arg);

   436       }

   437       else {

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

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

   440         else {

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

   442           ParData &p(i->second);

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

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

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

   446           else {

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

   448             std::istringstream vals(val);

   449             switch(p.type) {

   450             case STRING:

   451               *p.string_p=val;

   452               break;

   453             case INTEGER:

   454               vals >> *p.int_p;

   455               break;

   456             case DOUBLE:

   457               vals >> *p.double_p;

   458               break;

   459             default:

   460               break;

   461             }

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

   463               requiresValue(arg, p.type);

   464           }

   465           p.set = true;

   466         }

   467       }

   468     }

   469     checkMandatories();

   471     return *this;

   472   }

   474 }

author	Balazs Dezso <deba@google.com>
	Fri, 22 Jan 2021 10:55:32 +0100
changeset 1208	c6aa2cc1af04
parent 877	141f9c0db4a3
permissions	-rw-r--r--