lemon/arg_parser.cc
author Alpar Juttner <alpar@cs.elte.hu>
Tue, 30 Jul 2013 15:12:17 +0200
branch1.2
changeset 976 736436e516d3
parent 842 c2ff0a365245
permissions -rw-r--r--
Merge fix #470 to branch 1.2
alpar@209
     1
/* -*- mode: C++; indent-tabs-mode: nil; -*-
alpar@85
     2
 *
alpar@209
     3
 * This file is a part of LEMON, a generic C++ optimization library.
alpar@85
     4
 *
alpar@877
     5
 * Copyright (C) 2003-2010
alpar@85
     6
 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
alpar@85
     7
 * (Egervary Research Group on Combinatorial Optimization, EGRES).
alpar@85
     8
 *
alpar@85
     9
 * Permission to use, modify and distribute this software is granted
alpar@85
    10
 * provided that this copyright notice appears in all copies. For
alpar@85
    11
 * precise terms see the accompanying LICENSE file.
alpar@85
    12
 *
alpar@85
    13
 * This software is provided "AS IS" with no warranty of any kind,
alpar@85
    14
 * express or implied, and with no claim as to its suitability for any
alpar@85
    15
 * purpose.
alpar@85
    16
 *
alpar@85
    17
 */
alpar@85
    18
alpar@85
    19
#include <lemon/arg_parser.h>
alpar@85
    20
alpar@85
    21
namespace lemon {
alpar@85
    22
alpar@842
    23
  void ArgParser::_terminate(ArgParserException::Reason reason) const
alpar@842
    24
  {
alpar@842
    25
    if(_exit_on_problems)
alpar@842
    26
      exit(1);
alpar@842
    27
    else throw(ArgParserException(reason));
alpar@842
    28
  }
alpar@877
    29
alpar@877
    30
alpar@85
    31
  void ArgParser::_showHelp(void *p)
alpar@85
    32
  {
alpar@85
    33
    (static_cast<ArgParser*>(p))->showHelp();
alpar@842
    34
    (static_cast<ArgParser*>(p))->_terminate(ArgParserException::HELP);
alpar@85
    35
  }
alpar@85
    36
ladanyi@311
    37
  ArgParser::ArgParser(int argc, const char * const *argv)
alpar@842
    38
    :_argc(argc), _argv(argv), _command_name(argv[0]),
alpar@842
    39
    _exit_on_problems(true) {
alpar@85
    40
    funcOption("-help","Print a short help message",_showHelp,this);
alpar@85
    41
    synonym("help","-help");
alpar@85
    42
    synonym("h","-help");
alpar@85
    43
  }
alpar@85
    44
alpar@85
    45
  ArgParser::~ArgParser()
alpar@85
    46
  {
alpar@85
    47
    for(Opts::iterator i=_opts.begin();i!=_opts.end();++i)
alpar@85
    48
      if(i->second.self_delete)
alpar@209
    49
        switch(i->second.type) {
alpar@209
    50
        case BOOL:
alpar@209
    51
          delete i->second.bool_p;
alpar@209
    52
          break;
alpar@209
    53
        case STRING:
alpar@209
    54
          delete i->second.string_p;
alpar@209
    55
          break;
alpar@209
    56
        case DOUBLE:
alpar@209
    57
          delete i->second.double_p;
alpar@209
    58
          break;
alpar@209
    59
        case INTEGER:
alpar@209
    60
          delete i->second.int_p;
alpar@209
    61
          break;
alpar@209
    62
        case UNKNOWN:
alpar@209
    63
          break;
alpar@209
    64
        case FUNC:
alpar@209
    65
          break;
alpar@209
    66
        }
alpar@85
    67
  }
alpar@209
    68
alpar@85
    69
alpar@85
    70
  ArgParser &ArgParser::intOption(const std::string &name,
alpar@209
    71
                               const std::string &help,
alpar@209
    72
                               int value, bool obl)
alpar@85
    73
  {
alpar@85
    74
    ParData p;
alpar@85
    75
    p.int_p=new int(value);
alpar@85
    76
    p.self_delete=true;
alpar@85
    77
    p.help=help;
alpar@85
    78
    p.type=INTEGER;
alpar@85
    79
    p.mandatory=obl;
alpar@85
    80
    _opts[name]=p;
alpar@85
    81
    return *this;
alpar@85
    82
  }
alpar@85
    83
alpar@85
    84
  ArgParser &ArgParser::doubleOption(const std::string &name,
alpar@209
    85
                               const std::string &help,
alpar@209
    86
                               double value, bool obl)
alpar@85
    87
  {
alpar@85
    88
    ParData p;
alpar@85
    89
    p.double_p=new double(value);
alpar@85
    90
    p.self_delete=true;
alpar@85
    91
    p.help=help;
alpar@85
    92
    p.type=DOUBLE;
alpar@85
    93
    p.mandatory=obl;
alpar@85
    94
    _opts[name]=p;
alpar@85
    95
    return *this;
alpar@85
    96
  }
alpar@85
    97
alpar@85
    98
  ArgParser &ArgParser::boolOption(const std::string &name,
alpar@209
    99
                               const std::string &help,
alpar@209
   100
                               bool value, bool obl)
alpar@85
   101
  {
alpar@85
   102
    ParData p;
alpar@85
   103
    p.bool_p=new bool(value);
alpar@85
   104
    p.self_delete=true;
alpar@85
   105
    p.help=help;
alpar@85
   106
    p.type=BOOL;
alpar@85
   107
    p.mandatory=obl;
alpar@85
   108
    _opts[name]=p;
alpar@85
   109
    return *this;
alpar@85
   110
  }
alpar@85
   111
alpar@85
   112
  ArgParser &ArgParser::stringOption(const std::string &name,
alpar@209
   113
                               const std::string &help,
alpar@209
   114
                               std::string value, bool obl)
alpar@85
   115
  {
alpar@85
   116
    ParData p;
alpar@85
   117
    p.string_p=new std::string(value);
alpar@85
   118
    p.self_delete=true;
alpar@85
   119
    p.help=help;
alpar@85
   120
    p.type=STRING;
alpar@85
   121
    p.mandatory=obl;
alpar@85
   122
    _opts[name]=p;
alpar@85
   123
    return *this;
alpar@85
   124
  }
alpar@85
   125
alpar@85
   126
  ArgParser &ArgParser::refOption(const std::string &name,
alpar@209
   127
                               const std::string &help,
alpar@209
   128
                               int &ref, bool obl)
alpar@85
   129
  {
alpar@85
   130
    ParData p;
alpar@85
   131
    p.int_p=&ref;
alpar@85
   132
    p.self_delete=false;
alpar@85
   133
    p.help=help;
alpar@85
   134
    p.type=INTEGER;
alpar@85
   135
    p.mandatory=obl;
alpar@85
   136
    _opts[name]=p;
alpar@85
   137
    return *this;
alpar@85
   138
  }
alpar@85
   139
alpar@85
   140
  ArgParser &ArgParser::refOption(const std::string &name,
alpar@85
   141
                                  const std::string &help,
alpar@85
   142
                                  double &ref, bool obl)
alpar@85
   143
  {
alpar@85
   144
    ParData p;
alpar@85
   145
    p.double_p=&ref;
alpar@85
   146
    p.self_delete=false;
alpar@85
   147
    p.help=help;
alpar@85
   148
    p.type=DOUBLE;
alpar@85
   149
    p.mandatory=obl;
alpar@85
   150
    _opts[name]=p;
alpar@85
   151
    return *this;
alpar@85
   152
  }
alpar@85
   153
alpar@85
   154
  ArgParser &ArgParser::refOption(const std::string &name,
alpar@85
   155
                                  const std::string &help,
alpar@85
   156
                                  bool &ref, bool obl)
alpar@85
   157
  {
alpar@85
   158
    ParData p;
alpar@85
   159
    p.bool_p=&ref;
alpar@85
   160
    p.self_delete=false;
alpar@85
   161
    p.help=help;
alpar@85
   162
    p.type=BOOL;
alpar@85
   163
    p.mandatory=obl;
alpar@85
   164
    _opts[name]=p;
alpar@85
   165
alpar@85
   166
    ref = false;
alpar@85
   167
alpar@85
   168
    return *this;
alpar@85
   169
  }
alpar@85
   170
alpar@85
   171
  ArgParser &ArgParser::refOption(const std::string &name,
alpar@209
   172
                               const std::string &help,
alpar@209
   173
                               std::string &ref, bool obl)
alpar@85
   174
  {
alpar@85
   175
    ParData p;
alpar@85
   176
    p.string_p=&ref;
alpar@85
   177
    p.self_delete=false;
alpar@85
   178
    p.help=help;
alpar@85
   179
    p.type=STRING;
alpar@85
   180
    p.mandatory=obl;
alpar@85
   181
    _opts[name]=p;
alpar@85
   182
    return *this;
alpar@85
   183
  }
alpar@85
   184
alpar@85
   185
  ArgParser &ArgParser::funcOption(const std::string &name,
alpar@209
   186
                               const std::string &help,
alpar@209
   187
                               void (*func)(void *),void *data)
alpar@85
   188
  {
alpar@85
   189
    ParData p;
alpar@85
   190
    p.func_p.p=func;
alpar@85
   191
    p.func_p.data=data;
alpar@85
   192
    p.self_delete=false;
alpar@85
   193
    p.help=help;
alpar@85
   194
    p.type=FUNC;
alpar@85
   195
    p.mandatory=false;
alpar@85
   196
    _opts[name]=p;
alpar@85
   197
    return *this;
alpar@85
   198
  }
alpar@85
   199
alpar@85
   200
  ArgParser &ArgParser::optionGroup(const std::string &group,
alpar@209
   201
                                    const std::string &opt)
alpar@85
   202
  {
alpar@85
   203
    Opts::iterator i = _opts.find(opt);
alpar@85
   204
    LEMON_ASSERT(i!=_opts.end(), "Unknown option: '"+opt+"'");
alpar@209
   205
    LEMON_ASSERT(!(i->second.ingroup),
alpar@85
   206
                 "Option already in option group: '"+opt+"'");
alpar@85
   207
    GroupData &g=_groups[group];
alpar@85
   208
    g.opts.push_back(opt);
alpar@85
   209
    i->second.ingroup=true;
alpar@85
   210
    return *this;
alpar@85
   211
  }
alpar@85
   212
alpar@85
   213
  ArgParser &ArgParser::onlyOneGroup(const std::string &group)
alpar@85
   214
  {
alpar@85
   215
    GroupData &g=_groups[group];
alpar@85
   216
    g.only_one=true;
alpar@85
   217
    return *this;
alpar@85
   218
  }
alpar@85
   219
alpar@85
   220
  ArgParser &ArgParser::synonym(const std::string &syn,
alpar@209
   221
                                const std::string &opt)
alpar@85
   222
  {
alpar@85
   223
    Opts::iterator o = _opts.find(opt);
alpar@85
   224
    Opts::iterator s = _opts.find(syn);
alpar@85
   225
    LEMON_ASSERT(o!=_opts.end(), "Unknown option: '"+opt+"'");
alpar@85
   226
    LEMON_ASSERT(s==_opts.end(), "Option already used: '"+syn+"'");
alpar@85
   227
    ParData p;
alpar@85
   228
    p.help=opt;
alpar@85
   229
    p.mandatory=false;
alpar@85
   230
    p.syn=true;
alpar@85
   231
    _opts[syn]=p;
alpar@85
   232
    o->second.has_syn=true;
alpar@85
   233
    return *this;
alpar@85
   234
  }
alpar@85
   235
alpar@85
   236
  ArgParser &ArgParser::mandatoryGroup(const std::string &group)
alpar@85
   237
  {
alpar@85
   238
    GroupData &g=_groups[group];
alpar@85
   239
    g.mandatory=true;
alpar@85
   240
    return *this;
alpar@85
   241
  }
alpar@85
   242
alpar@85
   243
  ArgParser &ArgParser::other(const std::string &name,
alpar@209
   244
                              const std::string &help)
alpar@85
   245
  {
alpar@85
   246
    _others_help.push_back(OtherArg(name,help));
alpar@85
   247
    return *this;
alpar@85
   248
  }
alpar@85
   249
alpar@214
   250
  void ArgParser::show(std::ostream &os,Opts::const_iterator i) const
alpar@85
   251
  {
alpar@85
   252
    os << "-" << i->first;
alpar@85
   253
    if(i->second.has_syn)
alpar@214
   254
      for(Opts::const_iterator j=_opts.begin();j!=_opts.end();++j)
alpar@209
   255
        if(j->second.syn&&j->second.help==i->first)
alpar@209
   256
          os << "|-" << j->first;
alpar@85
   257
    switch(i->second.type) {
alpar@85
   258
    case STRING:
alpar@85
   259
      os << " str";
alpar@85
   260
      break;
alpar@85
   261
    case INTEGER:
alpar@85
   262
      os << " int";
alpar@85
   263
      break;
alpar@85
   264
    case DOUBLE:
alpar@85
   265
      os << " num";
alpar@85
   266
      break;
alpar@85
   267
    default:
alpar@85
   268
      break;
alpar@85
   269
    }
alpar@85
   270
  }
alpar@85
   271
alpar@214
   272
  void ArgParser::show(std::ostream &os,Groups::const_iterator i) const
alpar@85
   273
  {
alpar@214
   274
    GroupData::Opts::const_iterator o=i->second.opts.begin();
alpar@85
   275
    while(o!=i->second.opts.end()) {
alpar@85
   276
      show(os,_opts.find(*o));
alpar@85
   277
      ++o;
alpar@85
   278
      if(o!=i->second.opts.end()) os<<'|';
alpar@85
   279
    }
alpar@85
   280
  }
alpar@209
   281
alpar@214
   282
  void ArgParser::showHelp(Opts::const_iterator i) const
alpar@85
   283
  {
alpar@85
   284
    if(i->second.help.size()==0||i->second.syn) return;
alpar@85
   285
    std::cerr << "  ";
alpar@85
   286
    show(std::cerr,i);
alpar@85
   287
    std::cerr << std::endl;
alpar@85
   288
    std::cerr << "     " << i->second.help << std::endl;
alpar@85
   289
  }
alpar@214
   290
  void ArgParser::showHelp(std::vector<ArgParser::OtherArg>::const_iterator i)
alpar@214
   291
    const
alpar@85
   292
  {
alpar@85
   293
    if(i->help.size()==0) return;
alpar@85
   294
    std::cerr << "  " << i->name << std::endl
alpar@209
   295
              << "     " << i->help << std::endl;
alpar@85
   296
  }
alpar@209
   297
alpar@214
   298
  void ArgParser::shortHelp() const
alpar@85
   299
  {
alpar@85
   300
    const unsigned int LINE_LEN=77;
alpar@85
   301
    const std::string indent("    ");
alpar@85
   302
    std::cerr << "Usage:\n  " << _command_name;
alpar@85
   303
    int pos=_command_name.size()+2;
alpar@214
   304
    for(Groups::const_iterator g=_groups.begin();g!=_groups.end();++g) {
alpar@85
   305
      std::ostringstream cstr;
alpar@85
   306
      cstr << ' ';
alpar@85
   307
      if(!g->second.mandatory) cstr << '[';
alpar@85
   308
      show(cstr,g);
alpar@85
   309
      if(!g->second.mandatory) cstr << ']';
alpar@85
   310
      if(pos+cstr.str().size()>LINE_LEN) {
alpar@209
   311
        std::cerr << std::endl << indent;
alpar@209
   312
        pos=indent.size();
alpar@85
   313
      }
alpar@85
   314
      std::cerr << cstr.str();
alpar@85
   315
      pos+=cstr.str().size();
alpar@85
   316
    }
alpar@214
   317
    for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i)
alpar@85
   318
      if(!i->second.ingroup&&!i->second.syn) {
alpar@209
   319
        std::ostringstream cstr;
alpar@209
   320
        cstr << ' ';
alpar@209
   321
        if(!i->second.mandatory) cstr << '[';
alpar@209
   322
        show(cstr,i);
alpar@209
   323
        if(!i->second.mandatory) cstr << ']';
alpar@209
   324
        if(pos+cstr.str().size()>LINE_LEN) {
alpar@209
   325
          std::cerr << std::endl << indent;
alpar@209
   326
          pos=indent.size();
alpar@209
   327
        }
alpar@209
   328
        std::cerr << cstr.str();
alpar@209
   329
        pos+=cstr.str().size();
alpar@85
   330
      }
alpar@214
   331
    for(std::vector<OtherArg>::const_iterator i=_others_help.begin();
alpar@209
   332
        i!=_others_help.end();++i)
alpar@85
   333
      {
alpar@209
   334
        std::ostringstream cstr;
alpar@209
   335
        cstr << ' ' << i->name;
alpar@209
   336
alpar@209
   337
        if(pos+cstr.str().size()>LINE_LEN) {
alpar@209
   338
          std::cerr << std::endl << indent;
alpar@209
   339
          pos=indent.size();
alpar@209
   340
        }
alpar@209
   341
        std::cerr << cstr.str();
alpar@209
   342
        pos+=cstr.str().size();
alpar@85
   343
      }
alpar@85
   344
    std::cerr << std::endl;
alpar@85
   345
  }
alpar@209
   346
alpar@214
   347
  void ArgParser::showHelp() const
alpar@85
   348
  {
alpar@85
   349
    shortHelp();
alpar@85
   350
    std::cerr << "Where:\n";
alpar@214
   351
    for(std::vector<OtherArg>::const_iterator i=_others_help.begin();
alpar@209
   352
        i!=_others_help.end();++i) showHelp(i);
alpar@214
   353
    for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i) showHelp(i);
alpar@842
   354
    _terminate(ArgParserException::HELP);
alpar@85
   355
  }
alpar@209
   356
alpar@209
   357
alpar@214
   358
  void ArgParser::unknownOpt(std::string arg) const
alpar@85
   359
  {
alpar@85
   360
    std::cerr << "\nUnknown option: " << arg << "\n";
alpar@85
   361
    std::cerr << "\nType '" << _command_name <<
alpar@85
   362
      " --help' to obtain a short summary on the usage.\n\n";
alpar@842
   363
    _terminate(ArgParserException::UNKNOWN_OPT);
alpar@85
   364
  }
alpar@209
   365
alpar@214
   366
  void ArgParser::requiresValue(std::string arg, OptType t) const
alpar@85
   367
  {
alpar@85
   368
    std::cerr << "Argument '" << arg << "' requires a";
alpar@85
   369
    switch(t) {
alpar@85
   370
    case STRING:
alpar@85
   371
      std::cerr << " string";
alpar@85
   372
      break;
alpar@85
   373
    case INTEGER:
alpar@85
   374
      std::cerr << "n integer";
alpar@85
   375
      break;
alpar@85
   376
    case DOUBLE:
alpar@85
   377
      std::cerr << " floating point";
alpar@85
   378
      break;
alpar@85
   379
    default:
alpar@85
   380
      break;
alpar@85
   381
    }
alpar@85
   382
    std::cerr << " value\n\n";
alpar@85
   383
    showHelp();
alpar@85
   384
  }
alpar@209
   385
alpar@85
   386
alpar@214
   387
  void ArgParser::checkMandatories() const
alpar@85
   388
  {
alpar@85
   389
    bool ok=true;
alpar@214
   390
    for(Opts::const_iterator i=_opts.begin();i!=_opts.end();++i)
alpar@209
   391
      if(i->second.mandatory&&!i->second.set)
alpar@209
   392
        {
alpar@209
   393
          if(ok)
alpar@209
   394
            std::cerr << _command_name
alpar@209
   395
                      << ": The following mandatory arguments are missing.\n";
alpar@209
   396
          ok=false;
alpar@209
   397
          showHelp(i);
alpar@209
   398
        }
alpar@214
   399
    for(Groups::const_iterator i=_groups.begin();i!=_groups.end();++i)
alpar@85
   400
      if(i->second.mandatory||i->second.only_one)
alpar@209
   401
        {
alpar@209
   402
          int set=0;
alpar@214
   403
          for(GroupData::Opts::const_iterator o=i->second.opts.begin();
alpar@209
   404
              o!=i->second.opts.end();++o)
alpar@209
   405
            if(_opts.find(*o)->second.set) ++set;
alpar@209
   406
          if(i->second.mandatory&&!set) {
alpar@210
   407
            std::cerr << _command_name <<
alpar@210
   408
              ": At least one of the following arguments is mandatory.\n";
alpar@209
   409
            ok=false;
alpar@214
   410
            for(GroupData::Opts::const_iterator o=i->second.opts.begin();
alpar@209
   411
                o!=i->second.opts.end();++o)
alpar@209
   412
              showHelp(_opts.find(*o));
alpar@209
   413
          }
alpar@209
   414
          if(i->second.only_one&&set>1) {
alpar@210
   415
            std::cerr << _command_name <<
alpar@210
   416
              ": At most one of the following arguments can be given.\n";
alpar@209
   417
            ok=false;
alpar@214
   418
            for(GroupData::Opts::const_iterator o=i->second.opts.begin();
alpar@209
   419
                o!=i->second.opts.end();++o)
alpar@209
   420
              showHelp(_opts.find(*o));
alpar@209
   421
          }
alpar@209
   422
        }
alpar@85
   423
    if(!ok) {
alpar@85
   424
      std::cerr << "\nType '" << _command_name <<
alpar@209
   425
        " --help' to obtain a short summary on the usage.\n\n";
alpar@842
   426
      _terminate(ArgParserException::INVALID_OPT);
alpar@85
   427
    }
alpar@85
   428
  }
alpar@85
   429
alpar@85
   430
  ArgParser &ArgParser::parse()
alpar@85
   431
  {
alpar@85
   432
    for(int ar=1; ar<_argc; ++ar) {
alpar@85
   433
      std::string arg(_argv[ar]);
alpar@85
   434
      if (arg[0] != '-' || arg.size() == 1) {
alpar@209
   435
        _file_args.push_back(arg);
alpar@85
   436
      }
alpar@85
   437
      else {
alpar@209
   438
        Opts::iterator i = _opts.find(arg.substr(1));
alpar@209
   439
        if(i==_opts.end()) unknownOpt(arg);
alpar@209
   440
        else {
alpar@209
   441
          if(i->second.syn) i=_opts.find(i->second.help);
alpar@209
   442
          ParData &p(i->second);
alpar@209
   443
          if (p.type==BOOL) *p.bool_p=true;
alpar@209
   444
          else if (p.type==FUNC) p.func_p.p(p.func_p.data);
alpar@209
   445
          else if(++ar==_argc) requiresValue(arg, p.type);
alpar@209
   446
          else {
alpar@209
   447
            std::string val(_argv[ar]);
alpar@209
   448
            std::istringstream vals(val);
alpar@209
   449
            switch(p.type) {
alpar@209
   450
            case STRING:
alpar@209
   451
              *p.string_p=val;
alpar@209
   452
              break;
alpar@209
   453
            case INTEGER:
alpar@209
   454
              vals >> *p.int_p;
alpar@209
   455
              break;
alpar@209
   456
            case DOUBLE:
alpar@209
   457
              vals >> *p.double_p;
alpar@209
   458
              break;
alpar@209
   459
            default:
alpar@209
   460
              break;
alpar@209
   461
            }
alpar@209
   462
            if(p.type!=STRING&&(!vals||!vals.eof()))
alpar@209
   463
              requiresValue(arg, p.type);
alpar@209
   464
          }
alpar@209
   465
          p.set = true;
alpar@209
   466
        }
alpar@85
   467
      }
alpar@85
   468
    }
alpar@85
   469
    checkMandatories();
alpar@85
   470
alpar@85
   471
    return *this;
alpar@209
   472
  }
alpar@85
   473
alpar@85
   474
}