alpar@2389: /* -*- C++ -*-
alpar@2389:  * lemon/main_params.h - Part of LEMON, a generic C++ optimization library
alpar@2389:  *
alpar@2389:  * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
alpar@2389:  * (Egervary Research Group on Combinatorial Optimization, EGRES).
alpar@2389:  *
alpar@2389:  * Permission to use, modify and distribute this software is granted
alpar@2389:  * provided that this copyright notice appears in all copies. For
alpar@2389:  * precise terms see the accompanying LICENSE file.
alpar@2389:  *
alpar@2389:  * This software is provided "AS IS" with no warranty of any kind,
alpar@2389:  * express or implied, and with no claim as to its suitability for any
alpar@2389:  * purpose.
alpar@2389:  *
alpar@2389:  */
alpar@2389: 
alpar@2389: #include <lemon/arg_parser.h>
alpar@2389: 
alpar@2389: namespace lemon {
alpar@2389: 
alpar@2389:   void ArgParser::_showHelp(void *p)
alpar@2389:   {
alpar@2389:     ((ArgParser*)p)->showHelp();
alpar@2389:     exit(1);
alpar@2389:   }
alpar@2389: 
alpar@2389:   ArgParser::ArgParser(int argc, char **argv) :_argc(argc), _argv(argv),
alpar@2389: 					       _command_name(argv[0]) {
alpar@2389:     option("-help","Print a short help message",_showHelp,this);
alpar@2389:     synonym("help","-help");
alpar@2389:     synonym("h","-help");
alpar@2389: 
alpar@2389:   }
alpar@2389: 
alpar@2389:   ArgParser &ArgParser::option(const std::string &name,
alpar@2389: 			       const std::string &help,
alpar@2389: 			       int &value, bool obl)
alpar@2389:   {
alpar@2389:     ParData p;
alpar@2389:     p.int_p=&value;
alpar@2389:     p.help=help;
alpar@2389:     p.type=INTEGER;
alpar@2389:     p.mandatory=obl;
alpar@2389:     _opts[name]=p;
alpar@2389:     return *this;
alpar@2389:   }
alpar@2389: 
alpar@2389:   ArgParser &ArgParser::option(const std::string &name,
alpar@2389: 			       const std::string &help,
alpar@2389: 			       double &value, bool obl)
alpar@2389:   {
alpar@2389:     ParData p;
alpar@2389:     p.double_p=&value;
alpar@2389:     p.help=help;
alpar@2389:     p.type=DOUBLE;
alpar@2389:     p.mandatory=obl;
alpar@2389:     _opts[name]=p;
alpar@2389:     return *this;
alpar@2389:   }
alpar@2389: 
alpar@2389:   ArgParser &ArgParser::option(const std::string &name,
alpar@2389: 			       const std::string &help,
alpar@2389: 			       bool &value, bool obl)
alpar@2389:   {
alpar@2389:     ParData p;
alpar@2389:     p.bool_p=&value;
alpar@2389:     p.help=help;
alpar@2389:     p.type=BOOL;
alpar@2389:     p.mandatory=obl;
alpar@2389:     _opts[name]=p;
alpar@2389: 
alpar@2389:     value = false;
alpar@2389: 
alpar@2389:     return *this;
alpar@2389:   }
alpar@2389: 
alpar@2389:   ArgParser &ArgParser::option(const std::string &name,
alpar@2389: 			       const std::string &help,
alpar@2389: 			       std::string &value, bool obl)
alpar@2389:   {
alpar@2389:     ParData p;
alpar@2389:     p.string_p=&value;
alpar@2389:     p.help=help;
alpar@2389:     p.type=STRING;
alpar@2389:     p.mandatory=obl;
alpar@2389:     _opts[name]=p;
alpar@2389:     return *this;
alpar@2389:   }
alpar@2389: 
alpar@2389:   ArgParser &ArgParser::option(const std::string &name,
alpar@2389: 			       const std::string &help,
alpar@2389: 			       void (*func)(void *),void *data)
alpar@2389:   {
alpar@2389:     ParData p;
alpar@2389:     p.func_p.p=func;
alpar@2389:     p.func_p.data=data;
alpar@2389:     p.help=help;
alpar@2389:     p.type=FUNC;
alpar@2389:     p.mandatory=false;
alpar@2389:     _opts[name]=p;
alpar@2389:     return *this;
alpar@2389:   }
alpar@2389:   ArgParser &ArgParser::optionGroup(const std::string &group,
alpar@2389: 				    const std::string &opt)
alpar@2389:   {
alpar@2389:     Opts::iterator i = _opts.find(opt);
alpar@2389:     if(i==_opts.end()) exit(3); ///\todo throw exception instead
alpar@2389:     else if(i->second.ingroup) exit(3); ///\todo throw exception instead
alpar@2389:     else {
alpar@2389:       GroupData &g=_groups[group];
alpar@2389:       g.opts.push_back(opt);
alpar@2389:       i->second.ingroup=true;
alpar@2389:     }
alpar@2389:     return *this;
alpar@2389:   }
alpar@2389: 
alpar@2389:   ArgParser &ArgParser::onlyOneGroup(const std::string &group)
alpar@2389:   {
alpar@2389:     GroupData &g=_groups[group];
alpar@2389:     g.only_one=true;
alpar@2389:     return *this;
alpar@2389:   }
alpar@2389: 
alpar@2389:   ArgParser &ArgParser::synonym(const std::string &syn,
alpar@2389: 				const std::string &opt)
alpar@2389:   {
alpar@2389:     Opts::iterator o = _opts.find(opt);
alpar@2389:     Opts::iterator s = _opts.find(syn);
alpar@2389:     if(o==_opts.end()||s!=_opts.end())
alpar@2389:       exit(3); ///\todo throw exception instead
alpar@2389:     else {
alpar@2389:       ParData p;
alpar@2389:       p.help=opt;
alpar@2389:       p.mandatory=false;
alpar@2389:       p.syn=true;
alpar@2389:       _opts[syn]=p;
alpar@2389:       o->second.has_syn=true;
alpar@2389:     }
alpar@2389:     return *this;
alpar@2389:   }
alpar@2389: 
alpar@2389:   ArgParser &ArgParser::mandatoryGroup(const std::string &group)
alpar@2389:   {
alpar@2389:     GroupData &g=_groups[group];
alpar@2389:     g.mandatory=true;
alpar@2389:     return *this;
alpar@2389:   }
alpar@2389: 
alpar@2389:   ArgParser &ArgParser::other(const std::string &name,
alpar@2389: 			      const std::string &help)
alpar@2389:   {
alpar@2389:     _others_help.push_back(OtherArg(name,help));
alpar@2389:     return *this;
alpar@2389:   }
alpar@2389: 
alpar@2389:   void ArgParser::show(std::ostream &os,Opts::iterator i)
alpar@2389:   {
alpar@2389:     os << "-" << i->first;
alpar@2389:     if(i->second.has_syn)
alpar@2389:       for(Opts::iterator j=_opts.begin();j!=_opts.end();++j)
alpar@2389: 	if(j->second.syn&&j->second.help==i->first)
alpar@2389: 	  os << "|-" << j->first;
alpar@2389:     switch(i->second.type) {
alpar@2389:     case STRING:
alpar@2389:       os << " str";
alpar@2389:       break;
alpar@2389:     case INTEGER:
alpar@2389:       os << " int";
alpar@2389:       break;
alpar@2389:     case DOUBLE:
alpar@2389:       os << " num";
alpar@2389:       break;
alpar@2389:     default:
alpar@2389:       break;
alpar@2389:     }
alpar@2389:   }
alpar@2389: 
alpar@2389:   void ArgParser::show(std::ostream &os,Groups::iterator i)
alpar@2389:   {
alpar@2389:     GroupData::Opts::iterator o=i->second.opts.begin();
alpar@2389:     while(o!=i->second.opts.end()) {
alpar@2389:       show(os,_opts.find(*o));
alpar@2389:       ++o;
alpar@2389:       if(o!=i->second.opts.end()) os<<'|';
alpar@2389:     }
alpar@2389:   }
alpar@2389:     
alpar@2389:   void ArgParser::showHelp(Opts::iterator i)
alpar@2389:   {
alpar@2389:     if(i->second.help.size()==0||i->second.syn) return;
alpar@2389:     std::cerr << "  ";
alpar@2389:     show(std::cerr,i);
alpar@2389:     std::cerr << std::endl;
alpar@2389:     std::cerr << "     " << i->second.help << std::endl;
alpar@2389:   }
alpar@2389:   void ArgParser::showHelp(std::vector<ArgParser::OtherArg>::iterator i)
alpar@2389:   {
alpar@2389:     if(i->help.size()==0) return;
alpar@2389:     std::cerr << "  " << i->name << std::endl
alpar@2389: 	      << "     " << i->help << std::endl;
alpar@2389:   }
alpar@2389:     
alpar@2389:   void ArgParser::shortHelp()
alpar@2389:   {
alpar@2389:     const unsigned int LINE_LEN=77;
alpar@2389:     const std::string indent("    ");
alpar@2389:     std::cerr << "Usage:\n  " << _command_name;
alpar@2389:     int pos=_command_name.size()+2;
alpar@2389:     for(Groups::iterator g=_groups.begin();g!=_groups.end();++g) {
alpar@2389:       std::ostringstream cstr;
alpar@2389:       cstr << ' ';
alpar@2389:       if(!g->second.mandatory) cstr << '[';
alpar@2389:       show(cstr,g);
alpar@2389:       if(!g->second.mandatory) cstr << ']';
alpar@2389:       if(pos+cstr.str().size()>LINE_LEN) {
alpar@2389: 	std::cerr << std::endl << indent;
alpar@2389: 	pos=indent.size();
alpar@2389:       }
alpar@2389:       std::cerr << cstr.str();
alpar@2389:       pos+=cstr.str().size();
alpar@2389:     }
alpar@2389:     for(Opts::iterator i=_opts.begin();i!=_opts.end();++i)
alpar@2389:       if(!i->second.ingroup&&!i->second.syn) {
alpar@2389: 	std::ostringstream cstr;
alpar@2389: 	cstr << ' ';
alpar@2389: 	if(!i->second.mandatory) cstr << '[';
alpar@2389: 	show(cstr,i);
alpar@2389: 	if(!i->second.mandatory) cstr << ']';
alpar@2389: 	if(pos+cstr.str().size()>LINE_LEN) {
alpar@2389: 	  std::cerr << std::endl << indent;
alpar@2389: 	  pos=indent.size();
alpar@2389: 	}
alpar@2389: 	std::cerr << cstr.str();
alpar@2389: 	pos+=cstr.str().size();
alpar@2389:       }
alpar@2389:     for(std::vector<OtherArg>::iterator i=_others_help.begin();
alpar@2389: 	i!=_others_help.end();++i)
alpar@2389:       {
alpar@2389: 	std::ostringstream cstr;
alpar@2389: 	cstr << ' ' << i->name;
alpar@2389:       
alpar@2389: 	if(pos+cstr.str().size()>LINE_LEN) {
alpar@2389: 	  std::cerr << std::endl << indent;
alpar@2389: 	  pos=indent.size();
alpar@2389: 	}
alpar@2389: 	std::cerr << cstr.str();
alpar@2389: 	pos+=cstr.str().size();
alpar@2389:       }
alpar@2389:     std::cerr << std::endl;
alpar@2389:   }
alpar@2389:     
alpar@2389:   void ArgParser::showHelp()
alpar@2389:   {
alpar@2389:     shortHelp();
alpar@2389:     std::cerr << "Where:\n";
alpar@2389:     for(std::vector<OtherArg>::iterator i=_others_help.begin();
alpar@2389: 	i!=_others_help.end();++i) showHelp(i);
alpar@2389:     for(Opts::iterator i=_opts.begin();i!=_opts.end();++i) showHelp(i);
alpar@2389:     exit(1);
alpar@2389:   }
alpar@2389:     
alpar@2389:       
alpar@2389:   void ArgParser::unknownOpt(std::string arg) 
alpar@2389:   {
alpar@2389:     std::cerr << "\nUnknown option: " << arg << "\n";
alpar@2389:     std::cerr << "\nType '" << _command_name <<
alpar@2389:       " --help' to obtain a short summary on the usage.\n\n";
alpar@2389:     exit(1);
alpar@2389:   }
alpar@2389:     
alpar@2389:   void ArgParser::requiresValue(std::string arg, OptType t) 
alpar@2389:   {
alpar@2389:     std::cerr << "Argument '" << arg << "' requires a";
alpar@2389:     switch(t) {
alpar@2389:     case STRING:
alpar@2389:       std::cerr << " string";
alpar@2389:       break;
alpar@2389:     case INTEGER:
alpar@2389:       std::cerr << "n integer";
alpar@2389:       break;
alpar@2389:     case DOUBLE:
alpar@2389:       std::cerr << " floating point";
alpar@2389:       break;
alpar@2389:     default:
alpar@2389:       break;
alpar@2389:     }
alpar@2389:     std::cerr << " value\n\n";
alpar@2389:     showHelp();
alpar@2389:   }
alpar@2389:     
alpar@2389: 
alpar@2389:   void ArgParser::checkMandatories()
alpar@2389:   {
alpar@2389:     bool ok=true;
alpar@2389:     for(Opts::iterator i=_opts.begin();i!=_opts.end();++i)
alpar@2389:       if(i->second.mandatory&&!i->second.set) 
alpar@2389: 	{
alpar@2389: 	  if(ok)
alpar@2389: 	    std::cerr << _command_name 
alpar@2389: 		      << ": The following mandatory arguments are missing.\n";
alpar@2389: 	  ok=false;
alpar@2389: 	  showHelp(i);
alpar@2389: 	}
alpar@2389:     for(Groups::iterator i=_groups.begin();i!=_groups.end();++i)
alpar@2389:       if(i->second.mandatory||i->second.only_one)
alpar@2389: 	{
alpar@2389: 	  int set=0;
alpar@2389: 	  for(GroupData::Opts::iterator o=i->second.opts.begin();
alpar@2389: 	      o!=i->second.opts.end();++o)
alpar@2389: 	    if(_opts.find(*o)->second.set) ++set;
alpar@2389: 	  if(i->second.mandatory&&!set) {
alpar@2389: 	    std::cerr << _command_name 
alpar@2389: 		      << ": At least one of the following arguments is mandatory.\n";
alpar@2389: 	    ok=false;
alpar@2389: 	    for(GroupData::Opts::iterator o=i->second.opts.begin();
alpar@2389: 		o!=i->second.opts.end();++o)
alpar@2389: 	      showHelp(_opts.find(*o));
alpar@2389: 	  }
alpar@2389: 	  if(i->second.only_one&&set>1) {
alpar@2389: 	    std::cerr << _command_name 
alpar@2389: 		      << ": At most one of the following arguments can be given.\n";
alpar@2389: 	    ok=false;
alpar@2389: 	    for(GroupData::Opts::iterator o=i->second.opts.begin();
alpar@2389: 		o!=i->second.opts.end();++o)
alpar@2389: 	      showHelp(_opts.find(*o));
alpar@2389: 	  }
alpar@2389: 	}
alpar@2389:     if(!ok) {
alpar@2389:       std::cerr << "\nType '" << _command_name <<
alpar@2389: 	" --help' to obtain a short summary on the usage.\n\n";
alpar@2389:       exit(1);
alpar@2389:     }
alpar@2389:   }
alpar@2389: 
alpar@2389:   ArgParser &ArgParser::parse()
alpar@2389:   {
alpar@2389:     for(int ar=1; ar<_argc; ++ar) {
alpar@2389:       std::string arg(_argv[ar]);
alpar@2389:       if (arg[0] != '-' || arg.size() == 1) {
alpar@2389: 	_file_args.push_back(arg);
alpar@2389:       }
alpar@2389:       else {
alpar@2389: 	Opts::iterator i = _opts.find(arg.substr(1));
alpar@2389: 	if(i==_opts.end()) unknownOpt(arg);
alpar@2389: 	else {
alpar@2389: 	  if(i->second.syn) i=_opts.find(i->second.help);
alpar@2389: 	  ParData &p(i->second);
alpar@2389: 	  if (p.type==BOOL) *p.bool_p=true;
alpar@2389: 	  else if (p.type==FUNC) p.func_p.p(p.func_p.data);
alpar@2389: 	  else if(++ar==_argc) requiresValue(arg, p.type);
alpar@2389: 	  else {
alpar@2389: 	    std::string val(_argv[ar]);
alpar@2389: 	    std::istringstream vals(val);
alpar@2389: 	    switch(p.type) {
alpar@2389: 	    case STRING:
alpar@2389: 	      *p.string_p=val;
alpar@2389: 	      break;
alpar@2389: 	    case INTEGER:
alpar@2389: 	      vals >> *p.int_p;
alpar@2389: 	      break;
alpar@2389: 	    case DOUBLE:
alpar@2389: 	      vals >> *p.double_p;
alpar@2389: 	      break;
alpar@2389: 	    default:
alpar@2389: 	      break;
alpar@2389: 	    }
alpar@2389: 	    if(p.type!=STRING&&(!vals||!vals.eof()))
alpar@2389: 	      requiresValue(arg, p.type);
alpar@2389: 	  }
alpar@2389: 	  p.set = true;
alpar@2389: 	}
alpar@2389:       }
alpar@2389:     }
alpar@2389:     checkMandatories();
alpar@2389: 
alpar@2389:     return *this;
alpar@2389:   }  
alpar@2389:     
alpar@2389: }