Source/kwsys/CommandLineArguments.cxx

   1 /*=========================================================================
   2
   3   Program:   KWSys - Kitware System Library
   4   Module:    $RCSfile: CommandLineArguments.cxx,v $
   5
   6   Copyright (c) Kitware, Inc., Insight Consortium.  All rights reserved.
   7   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
   8
   9      This software is distributed WITHOUT ANY WARRANTY; without even
  10      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  11      PURPOSE.  See the above copyright notices for more information.
  12
  13 =========================================================================*/
  14 #include "kwsysPrivate.h"
  15 #include KWSYS_HEADER(CommandLineArguments.hxx)
  16
  17 #include KWSYS_HEADER(Configure.hxx)
  18 #include KWSYS_HEADER(String.hxx)
  19
  20 #include KWSYS_HEADER(stl/vector)
  21 #include KWSYS_HEADER(stl/map)
  22 #include KWSYS_HEADER(stl/set)
  23 #include KWSYS_HEADER(ios/sstream)
  24 #include KWSYS_HEADER(ios/iostream)
  25
  26 // Work-around CMake dependency scanning limitation.  This must
  27 // duplicate the above list of headers.
  28 #if 0
  29 # include "CommandLineArguments.hxx.in"
  30 # include "Configure.hxx.in"
  31 # include "kwsys_stl.hxx.in"
  32 # include "kwsys_ios_sstream.h.in"
  33 # include "kwsys_ios_iostream.h.in"
  34 #endif
  35
  36 #include <stdio.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39
  40 #ifdef _MSC_VER
  41 # pragma warning (disable: 4786)
  42 #endif
  43
  44 #if defined(__sgi) && !defined(__GNUC__)
  45 # pragma set woff 1375 /* base class destructor not virtual */
  46 #endif
  47
  48 #if 0
  49 #  define CommandLineArguments_DEBUG(x) \
  50   kwsys_ios::cout << __LINE__ << " CLA: " << x << kwsys_ios::endl
  51 #else
  52 #  define CommandLineArguments_DEBUG(x)
  53 #endif
  54
  55 namespace KWSYS_NAMESPACE
  56 {
  57
  58 //----------------------------------------------------------------------------
  59 //============================================================================
  60 struct CommandLineArgumentsCallbackStructure
  61 {
  62   const char* Argument;
  63   int ArgumentType;
  64   CommandLineArguments::CallbackType Callback;
  65   void* CallData;
  66   void* Variable;
  67   int VariableType;
  68   const char* Help;
  69 };
  70
  71 class CommandLineArgumentsVectorOfStrings :
  72   public kwsys_stl::vector<kwsys::String> {};
  73 class CommandLineArgumentsSetOfStrings :
  74   public kwsys_stl::set<kwsys::String> {};
  75 class CommandLineArgumentsMapOfStrucs :
  76   public kwsys_stl::map<kwsys::String,
  77     CommandLineArgumentsCallbackStructure> {};
  78
  79 class CommandLineArgumentsInternal
  80 {
  81 public:
  82   CommandLineArgumentsInternal()
  83     {
  84     this->UnknownArgumentCallback = 0;
  85     this->ClientData = 0;
  86     this->LastArgument = 0;
  87     }
  88
  89   typedef CommandLineArgumentsVectorOfStrings VectorOfStrings;
  90   typedef CommandLineArgumentsMapOfStrucs CallbacksMap;
  91   typedef kwsys::String String;
  92   typedef CommandLineArgumentsSetOfStrings SetOfStrings;
  93
  94   VectorOfStrings Argv;
  95   String Argv0;
  96   CallbacksMap Callbacks;
  97
  98   CommandLineArguments::ErrorCallbackType UnknownArgumentCallback;
  99   void*             ClientData;
 100
 101   VectorOfStrings::size_type LastArgument;
 102
 103   VectorOfStrings UnusedArguments;
 104 };
 105 //============================================================================
 106 //----------------------------------------------------------------------------
 107
 108 //----------------------------------------------------------------------------
 109 CommandLineArguments::CommandLineArguments()
 110 {
 111   this->Internals = new CommandLineArguments::Internal;
 112   this->Help = "";
 113   this->LineLength = 80;
 114   this->StoreUnusedArgumentsFlag = false;
 115 }
 116
 117 //----------------------------------------------------------------------------
 118 CommandLineArguments::~CommandLineArguments()
 119 {
 120   delete this->Internals;
 121 }
 122
 123 //----------------------------------------------------------------------------
 124 void CommandLineArguments::Initialize(int argc, const char* const argv[])
 125 {
 126   int cc;
 127
 128   this->Initialize();
 129   this->Internals->Argv0 = argv[0];
 130   for ( cc = 1; cc < argc; cc ++ )
 131     {
 132     this->ProcessArgument(argv[cc]);
 133     }
 134 }
 135
 136 //----------------------------------------------------------------------------
 137 void CommandLineArguments::Initialize(int argc, char* argv[])
 138 {
 139   this->Initialize(argc, static_cast<const char* const*>(argv));
 140 }
 141
 142 //----------------------------------------------------------------------------
 143 void CommandLineArguments::Initialize()
 144 {
 145   this->Internals->Argv.clear();
 146   this->Internals->LastArgument = 0;
 147 }
 148
 149 //----------------------------------------------------------------------------
 150 void CommandLineArguments::ProcessArgument(const char* arg)
 151 {
 152   this->Internals->Argv.push_back(arg);
 153 }
 154
 155 //----------------------------------------------------------------------------
 156 bool CommandLineArguments::GetMatchedArguments(
 157   kwsys_stl::vector<kwsys_stl::string>* matches,
 158   const kwsys_stl::string& arg)
 159 {
 160   matches->clear();
 161   CommandLineArguments::Internal::CallbacksMap::iterator it;
 162
 163   // Does the argument match to any we know about?
 164   for ( it = this->Internals->Callbacks.begin();
 165     it != this->Internals->Callbacks.end();
 166     it ++ )
 167     {
 168     const CommandLineArguments::Internal::String& parg = it->first;
 169     CommandLineArgumentsCallbackStructure *cs = &it->second;
 170     if (cs->ArgumentType == CommandLineArguments::NO_ARGUMENT ||
 171       cs->ArgumentType == CommandLineArguments::SPACE_ARGUMENT)
 172       {
 173       if ( arg == parg )
 174         {
 175         matches->push_back(parg);
 176         }
 177       }
 178     else if ( arg.find( parg ) == 0 )
 179       {
 180       matches->push_back(parg);
 181       }
 182     }
 183   return matches->size() > 0;
 184 }
 185
 186 //----------------------------------------------------------------------------
 187 int CommandLineArguments::Parse()
 188 {
 189   kwsys_stl::vector<kwsys_stl::string>::size_type cc;
 190   kwsys_stl::vector<kwsys_stl::string> matches;
 191   if ( this->StoreUnusedArgumentsFlag )
 192     {
 193     this->Internals->UnusedArguments.clear();
 194     }
 195   for ( cc = 0; cc < this->Internals->Argv.size(); cc ++ )
 196     {
 197     const kwsys_stl::string& arg = this->Internals->Argv[cc];
 198     CommandLineArguments_DEBUG("Process argument: " << arg);
 199     this->Internals->LastArgument = cc;
 200     if ( this->GetMatchedArguments(&matches, arg) )
 201       {
 202       // Ok, we found one or more arguments that match what user specified.
 203       // Let's find the longest one.
 204       CommandLineArguments::Internal::VectorOfStrings::size_type kk;
 205       CommandLineArguments::Internal::VectorOfStrings::size_type maxidx = 0;
 206       CommandLineArguments::Internal::String::size_type maxlen = 0;
 207       for ( kk = 0; kk < matches.size(); kk ++ )
 208         {
 209         if ( matches[kk].size() > maxlen )
 210           {
 211           maxlen = matches[kk].size();
 212           maxidx = kk;
 213           }
 214         }
 215       // So, the longest one is probably the right one. Now see if it has any
 216       // additional value
 217       CommandLineArgumentsCallbackStructure *cs
 218         = &this->Internals->Callbacks[matches[maxidx]];
 219       const kwsys_stl::string& sarg = matches[maxidx];
 220       if ( cs->Argument != sarg )
 221         {
 222         abort();
 223         }
 224       switch ( cs->ArgumentType )
 225         {
 226       case NO_ARGUMENT:
 227         // No value
 228         if ( !this->PopulateVariable(cs, 0) )
 229           {
 230           return 0;
 231           }
 232         break;
 233       case SPACE_ARGUMENT:
 234         if ( cc == this->Internals->Argv.size()-1 )
 235           {
 236           this->Internals->LastArgument --;
 237           return 0;
 238           }
 239         CommandLineArguments_DEBUG("This is a space argument: " << arg
 240           << " value: " << this->Internals->Argv[cc+1].c_str());
 241         // Value is the next argument
 242         if ( !this->PopulateVariable(cs, this->Internals->Argv[cc+1].c_str()) )
 243           {
 244           return 0;
 245           }
 246         cc ++;
 247         break;
 248       case EQUAL_ARGUMENT:
 249         if ( arg.size() == sarg.size() || *(arg.c_str() + sarg.size()) != '=' )
 250           {
 251           this->Internals->LastArgument --;
 252           return 0;
 253           }
 254         // Value is everythng followed the '=' sign
 255         if ( !this->PopulateVariable(cs, arg.c_str() + sarg.size() + 1) )
 256           {
 257           return 0;
 258           }
 259         break;
 260       case CONCAT_ARGUMENT:
 261         // Value is whatever follows the argument
 262         if ( !this->PopulateVariable(cs, arg.c_str() + sarg.size()) )
 263           {
 264           return 0;
 265           }
 266         break;
 267       case MULTI_ARGUMENT:
 268         // Suck in all the rest of the arguments
 269         CommandLineArguments_DEBUG("This is a multi argument: " << arg);
 270         for (cc++; cc < this->Internals->Argv.size(); ++ cc )
 271           {
 272           const kwsys_stl::string& marg = this->Internals->Argv[cc];
 273           CommandLineArguments_DEBUG(" check multi argument value: " << marg);
 274           if ( this->GetMatchedArguments(&matches, marg) )
 275             {
 276             CommandLineArguments_DEBUG("End of multi argument " << arg << " with value: " << marg);
 277             break;
 278             }
 279           CommandLineArguments_DEBUG(" populate multi argument value: " << marg);
 280           if ( !this->PopulateVariable(cs, marg.c_str()) )
 281             {
 282             return 0;
 283             }
 284           }
 285         if ( cc != this->Internals->Argv.size() )
 286           {
 287           CommandLineArguments_DEBUG("Again End of multi argument " << arg);
 288           cc--;
 289           continue;
 290           }
 291         break;
 292       default:
 293         kwsys_ios::cerr << "Got unknown argument type: \"" << cs->ArgumentType << "\"" << kwsys_ios::endl;
 294         this->Internals->LastArgument --;
 295         return 0;
 296         }
 297       }
 298     else
 299       {
 300       // Handle unknown arguments
 301       if ( this->Internals->UnknownArgumentCallback )
 302         {
 303         if ( !this->Internals->UnknownArgumentCallback(arg.c_str(),
 304             this->Internals->ClientData) )
 305           {
 306           this->Internals->LastArgument --;
 307           return 0;
 308           }
 309         return 1;
 310         }
 311       else if ( this->StoreUnusedArgumentsFlag )
 312         {
 313         CommandLineArguments_DEBUG("Store unused argument " << arg);
 314         this->Internals->UnusedArguments.push_back(arg.c_str());
 315         }
 316       else
 317         {
 318         kwsys_ios::cerr << "Got unknown argument: \"" << arg.c_str() << "\"" << kwsys_ios::endl;
 319         this->Internals->LastArgument --;
 320         return 0;
 321         }
 322       }
 323     }
 324   return 1;
 325 }
 326
 327 //----------------------------------------------------------------------------
 328 void CommandLineArguments::GetRemainingArguments(int* argc, char*** argv)
 329 {
 330   CommandLineArguments::Internal::VectorOfStrings::size_type size
 331     = this->Internals->Argv.size() - this->Internals->LastArgument + 1;
 332   CommandLineArguments::Internal::VectorOfStrings::size_type cc;
 333
 334   // Copy Argv0 as the first argument
 335   char** args = new char*[ size ];
 336   args[0] = new char[ this->Internals->Argv0.size() + 1 ];
 337   strcpy(args[0], this->Internals->Argv0.c_str());
 338   int cnt = 1;
 339
 340   // Copy everything after the LastArgument, since that was not parsed.
 341   for ( cc = this->Internals->LastArgument+1;
 342     cc < this->Internals->Argv.size(); cc ++ )
 343     {
 344     args[cnt] = new char[ this->Internals->Argv[cc].size() + 1];
 345     strcpy(args[cnt], this->Internals->Argv[cc].c_str());
 346     cnt ++;
 347     }
 348   *argc = cnt;
 349   *argv = args;
 350 }
 351
 352 //----------------------------------------------------------------------------
 353 void CommandLineArguments::GetUnusedArguments(int* argc, char*** argv)
 354 {
 355   CommandLineArguments::Internal::VectorOfStrings::size_type size
 356     = this->Internals->UnusedArguments.size() + 1;
 357   CommandLineArguments::Internal::VectorOfStrings::size_type cc;
 358
 359   // Copy Argv0 as the first argument
 360   char** args = new char*[ size ];
 361   args[0] = new char[ this->Internals->Argv0.size() + 1 ];
 362   strcpy(args[0], this->Internals->Argv0.c_str());
 363   int cnt = 1;
 364
 365   // Copy everything after the LastArgument, since that was not parsed.
 366   for ( cc = 0;
 367     cc < this->Internals->UnusedArguments.size(); cc ++ )
 368     {
 369     kwsys::String &str = this->Internals->UnusedArguments[cc];
 370     args[cnt] = new char[ str.size() + 1];
 371     strcpy(args[cnt], str.c_str());
 372     cnt ++;
 373     }
 374   *argc = cnt;
 375   *argv = args;
 376 }
 377
 378 //----------------------------------------------------------------------------
 379 void CommandLineArguments::DeleteRemainingArguments(int argc, char*** argv)
 380 {
 381   int cc;
 382   for ( cc = 0; cc < argc; ++ cc )
 383     {
 384     delete [] (*argv)[cc];
 385     }
 386   delete [] *argv;
 387 }
 388
 389 //----------------------------------------------------------------------------
 390 void CommandLineArguments::AddCallback(const char* argument, ArgumentTypeEnum type,
 391   CallbackType callback, void* call_data, const char* help)
 392 {
 393   CommandLineArgumentsCallbackStructure s;
 394   s.Argument     = argument;
 395   s.ArgumentType = type;
 396   s.Callback     = callback;
 397   s.CallData     = call_data;
 398   s.VariableType = CommandLineArguments::NO_VARIABLE_TYPE;
 399   s.Variable     = 0;
 400   s.Help         = help;
 401
 402   this->Internals->Callbacks[argument] = s;
 403   this->GenerateHelp();
 404 }
 405
 406 //----------------------------------------------------------------------------
 407 void CommandLineArguments::AddArgument(const char* argument, ArgumentTypeEnum type,
 408   VariableTypeEnum vtype, void* variable, const char* help)
 409 {
 410   CommandLineArgumentsCallbackStructure s;
 411   s.Argument     = argument;
 412   s.ArgumentType = type;
 413   s.Callback     = 0;
 414   s.CallData     = 0;
 415   s.VariableType = vtype;
 416   s.Variable     = variable;
 417   s.Help         = help;
 418
 419   this->Internals->Callbacks[argument] = s;
 420   this->GenerateHelp();
 421 }
 422
 423 //----------------------------------------------------------------------------
 424 #define CommandLineArgumentsAddArgumentMacro(type, ctype) \
 425   void CommandLineArguments::AddArgument(const char* argument, ArgumentTypeEnum type, \
 426     ctype* variable, const char* help) \
 427   { \
 428     this->AddArgument(argument, type, CommandLineArguments::type##_TYPE, variable, help); \
 429   }
 430
 431 CommandLineArgumentsAddArgumentMacro(BOOL,       bool)
 432 CommandLineArgumentsAddArgumentMacro(INT,        int)
 433 CommandLineArgumentsAddArgumentMacro(DOUBLE,     double)
 434 CommandLineArgumentsAddArgumentMacro(STRING,     char*)
 435 CommandLineArgumentsAddArgumentMacro(STL_STRING, kwsys_stl::string)
 436
 437 CommandLineArgumentsAddArgumentMacro(VECTOR_BOOL,       kwsys_stl::vector<bool>)
 438 CommandLineArgumentsAddArgumentMacro(VECTOR_INT,        kwsys_stl::vector<int>)
 439 CommandLineArgumentsAddArgumentMacro(VECTOR_DOUBLE,     kwsys_stl::vector<double>)
 440 CommandLineArgumentsAddArgumentMacro(VECTOR_STRING,     kwsys_stl::vector<char*>)
 441 CommandLineArgumentsAddArgumentMacro(VECTOR_STL_STRING, kwsys_stl::vector<kwsys_stl::string>)
 442
 443 //----------------------------------------------------------------------------
 444 #define CommandLineArgumentsAddBooleanArgumentMacro(type, ctype) \
 445   void CommandLineArguments::AddBooleanArgument(const char* argument, \
 446     ctype* variable, const char* help) \
 447   { \
 448     this->AddArgument(argument, CommandLineArguments::NO_ARGUMENT, \
 449       CommandLineArguments::type##_TYPE, variable, help); \
 450   }
 451
 452 CommandLineArgumentsAddBooleanArgumentMacro(BOOL,       bool)
 453 CommandLineArgumentsAddBooleanArgumentMacro(INT,        int)
 454 CommandLineArgumentsAddBooleanArgumentMacro(DOUBLE,     double)
 455 CommandLineArgumentsAddBooleanArgumentMacro(STRING,     char*)
 456 CommandLineArgumentsAddBooleanArgumentMacro(STL_STRING, kwsys_stl::string)
 457
 458 //----------------------------------------------------------------------------
 459 void CommandLineArguments::SetClientData(void* client_data)
 460 {
 461   this->Internals->ClientData = client_data;
 462 }
 463
 464 //----------------------------------------------------------------------------
 465 void CommandLineArguments::SetUnknownArgumentCallback(
 466   CommandLineArguments::ErrorCallbackType callback)
 467 {
 468   this->Internals->UnknownArgumentCallback = callback;
 469 }
 470
 471 //----------------------------------------------------------------------------
 472 const char* CommandLineArguments::GetHelp(const char* arg)
 473 {
 474   CommandLineArguments::Internal::CallbacksMap::iterator it
 475     = this->Internals->Callbacks.find(arg);
 476   if ( it == this->Internals->Callbacks.end() )
 477     {
 478     return 0;
 479     }
 480
 481   // Since several arguments may point to the same argument, find the one this
 482   // one point to if this one is pointing to another argument.
 483   CommandLineArgumentsCallbackStructure *cs = &(it->second);
 484   for(;;)
 485     {
 486     CommandLineArguments::Internal::CallbacksMap::iterator hit
 487       = this->Internals->Callbacks.find(cs->Help);
 488     if ( hit == this->Internals->Callbacks.end() )
 489       {
 490       break;
 491       }
 492     cs = &(hit->second);
 493     }
 494   return cs->Help;
 495 }
 496
 497 //----------------------------------------------------------------------------
 498 void CommandLineArguments::SetLineLength(unsigned int ll)
 499 {
 500   if ( ll < 9 || ll > 1000 )
 501     {
 502     return;
 503     }
 504   this->LineLength = ll;
 505   this->GenerateHelp();
 506 }
 507
 508 //----------------------------------------------------------------------------
 509 const char* CommandLineArguments::GetArgv0()
 510 {
 511   return this->Internals->Argv0.c_str();
 512 }
 513
 514 //----------------------------------------------------------------------------
 515 unsigned int CommandLineArguments::GetLastArgument()
 516 {
 517   return static_cast<unsigned int>(this->Internals->LastArgument + 1);
 518 }
 519
 520 //----------------------------------------------------------------------------
 521 void CommandLineArguments::GenerateHelp()
 522 {
 523   kwsys_ios::ostringstream str;
 524
 525   // Collapse all arguments into the map of vectors of all arguments that do
 526   // the same thing.
 527   CommandLineArguments::Internal::CallbacksMap::iterator it;
 528   typedef kwsys_stl::map<CommandLineArguments::Internal::String,
 529      CommandLineArguments::Internal::SetOfStrings > MapArgs;
 530   MapArgs mp;
 531   MapArgs::iterator mpit, smpit;
 532   for ( it = this->Internals->Callbacks.begin();
 533     it != this->Internals->Callbacks.end();
 534     it ++ )
 535     {
 536     CommandLineArgumentsCallbackStructure *cs = &(it->second);
 537     mpit = mp.find(cs->Help);
 538     if ( mpit != mp.end() )
 539       {
 540       mpit->second.insert(it->first);
 541       mp[it->first].insert(it->first);
 542       }
 543     else
 544       {
 545       mp[it->first].insert(it->first);
 546       }
 547     }
 548   for ( it = this->Internals->Callbacks.begin();
 549     it != this->Internals->Callbacks.end();
 550     it ++ )
 551     {
 552     CommandLineArgumentsCallbackStructure *cs = &(it->second);
 553     mpit = mp.find(cs->Help);
 554     if ( mpit != mp.end() )
 555       {
 556       mpit->second.insert(it->first);
 557       smpit = mp.find(it->first);
 558       CommandLineArguments::Internal::SetOfStrings::iterator sit;
 559       for ( sit = smpit->second.begin(); sit != smpit->second.end(); sit++ )
 560         {
 561         mpit->second.insert(*sit);
 562         }
 563       mp.erase(smpit);
 564       }
 565     else
 566       {
 567       mp[it->first].insert(it->first);
 568       }
 569     }
 570
 571   // Find the length of the longest string
 572   CommandLineArguments::Internal::String::size_type maxlen = 0;
 573   for ( mpit = mp.begin();
 574     mpit != mp.end();
 575     mpit ++ )
 576     {
 577     CommandLineArguments::Internal::SetOfStrings::iterator sit;
 578     for ( sit = mpit->second.begin(); sit != mpit->second.end(); sit++ )
 579       {
 580       CommandLineArguments::Internal::String::size_type clen = sit->size();
 581       switch ( this->Internals->Callbacks[*sit].ArgumentType )
 582         {
 583         case CommandLineArguments::NO_ARGUMENT:     clen += 0; break;
 584         case CommandLineArguments::CONCAT_ARGUMENT: clen += 3; break;
 585         case CommandLineArguments::SPACE_ARGUMENT:  clen += 4; break;
 586         case CommandLineArguments::EQUAL_ARGUMENT:  clen += 4; break;
 587         }
 588       if ( clen > maxlen )
 589         {
 590         maxlen = clen;
 591         }
 592       }
 593     }
 594
 595   // Create format for that string
 596   char format[80];
 597   sprintf(format, "  %%-%ds  ", static_cast<unsigned int>(maxlen));
 598
 599   maxlen += 4; // For the space before and after the option
 600
 601   // Print help for each option
 602   for ( mpit = mp.begin();
 603     mpit != mp.end();
 604     mpit ++ )
 605     {
 606     CommandLineArguments::Internal::SetOfStrings::iterator sit;
 607     for ( sit = mpit->second.begin(); sit != mpit->second.end(); sit++ )
 608       {
 609       str << kwsys_ios::endl;
 610       char argument[100];
 611       sprintf(argument, "%s", sit->c_str());
 612       switch ( this->Internals->Callbacks[*sit].ArgumentType )
 613         {
 614         case CommandLineArguments::NO_ARGUMENT: break;
 615         case CommandLineArguments::CONCAT_ARGUMENT: strcat(argument, "opt"); break;
 616         case CommandLineArguments::SPACE_ARGUMENT:  strcat(argument, " opt"); break;
 617         case CommandLineArguments::EQUAL_ARGUMENT:  strcat(argument, "=opt"); break;
 618         case CommandLineArguments::MULTI_ARGUMENT:  strcat(argument, " opt opt ..."); break;
 619         }
 620       char buffer[80];
 621       sprintf(buffer, format, argument);
 622       str << buffer;
 623       }
 624     const char* ptr = this->Internals->Callbacks[mpit->first].Help;
 625     size_t len = strlen(ptr);
 626     int cnt = 0;
 627     while ( len > 0)
 628       {
 629       // If argument with help is longer than line length, split it on previous
 630       // space (or tab) and continue on the next line
 631       CommandLineArguments::Internal::String::size_type cc;
 632       for ( cc = 0; ptr[cc]; cc ++ )
 633         {
 634         if ( *ptr == ' ' || *ptr == '\t' )
 635           {
 636           ptr ++;
 637           len --;
 638           }
 639         }
 640       if ( cnt > 0 )
 641         {
 642         for ( cc = 0; cc < maxlen; cc ++ )
 643           {
 644           str << " ";
 645           }
 646         }
 647       CommandLineArguments::Internal::String::size_type skip = len;
 648       if ( skip > this->LineLength - maxlen )
 649         {
 650         skip = this->LineLength - maxlen;
 651         for ( cc = skip-1; cc > 0; cc -- )
 652           {
 653           if ( ptr[cc] == ' ' || ptr[cc] == '\t' )
 654             {
 655             break;
 656             }
 657           }
 658         if ( cc != 0 )
 659           {
 660           skip = cc;
 661           }
 662         }
 663       str.write(ptr, skip);
 664       str << kwsys_ios::endl;
 665       ptr += skip;
 666       len -= skip;
 667       cnt ++;
 668       }
 669     }
 670   /*
 671   // This can help debugging help string
 672   str << endl;
 673   unsigned int cc;
 674   for ( cc = 0; cc < this->LineLength; cc ++ )
 675     {
 676     str << cc % 10;
 677     }
 678   str << endl;
 679   */
 680   this->Help = str.str();
 681 }
 682
 683 //----------------------------------------------------------------------------
 684 void CommandLineArguments::PopulateVariable(
 685   bool* variable, const kwsys_stl::string& value)
 686 {
 687   if ( value == "1" || value == "ON" || value == "on" || value == "On" ||
 688     value == "TRUE" || value == "true" || value == "True" ||
 689     value == "yes" || value == "Yes" || value == "YES" )
 690     {
 691     *variable = true;
 692     }
 693   else
 694     {
 695     *variable = false;
 696     }
 697 }
 698
 699 //----------------------------------------------------------------------------
 700 void CommandLineArguments::PopulateVariable(
 701   int* variable, const kwsys_stl::string& value)
 702 {
 703   char* res = 0;
 704   *variable = strtol(value.c_str(), &res, 10);
 705   //if ( res && *res )
 706   //  {
 707   //  Can handle non-int
 708   //  }
 709 }
 710
 711 //----------------------------------------------------------------------------
 712 void CommandLineArguments::PopulateVariable(
 713   double* variable, const kwsys_stl::string& value)
 714 {
 715   char* res = 0;
 716   *variable = strtod(value.c_str(), &res);
 717   //if ( res && *res )
 718   //  {
 719   //  Can handle non-double
 720   //  }
 721 }
 722
 723 //----------------------------------------------------------------------------
 724 void CommandLineArguments::PopulateVariable(
 725   char** variable, const kwsys_stl::string& value)
 726 {
 727   if ( *variable )
 728     {
 729     delete [] *variable;
 730     *variable = 0;
 731     }
 732   *variable = new char[ value.size() + 1 ];
 733   strcpy(*variable, value.c_str());
 734 }
 735
 736 //----------------------------------------------------------------------------
 737 void CommandLineArguments::PopulateVariable(
 738   kwsys_stl::string* variable, const kwsys_stl::string& value)
 739 {
 740   *variable = value;
 741 }
 742
 743 //----------------------------------------------------------------------------
 744 void CommandLineArguments::PopulateVariable(
 745   kwsys_stl::vector<bool>* variable, const kwsys_stl::string& value)
 746 {
 747   bool val = false;
 748   if ( value == "1" || value == "ON" || value == "on" || value == "On" ||
 749     value == "TRUE" || value == "true" || value == "True" ||
 750     value == "yes" || value == "Yes" || value == "YES" )
 751     {
 752     val = true;
 753     }
 754   variable->push_back(val);
 755 }
 756
 757 //----------------------------------------------------------------------------
 758 void CommandLineArguments::PopulateVariable(
 759   kwsys_stl::vector<int>* variable, const kwsys_stl::string& value)
 760 {
 761   char* res = 0;
 762   variable->push_back(strtol(value.c_str(), &res, 10));
 763   //if ( res && *res )
 764   //  {
 765   //  Can handle non-int
 766   //  }
 767 }
 768
 769 //----------------------------------------------------------------------------
 770 void CommandLineArguments::PopulateVariable(
 771   kwsys_stl::vector<double>* variable, const kwsys_stl::string& value)
 772 {
 773   char* res = 0;
 774   variable->push_back(strtod(value.c_str(), &res));
 775   //if ( res && *res )
 776   //  {
 777   //  Can handle non-int
 778   //  }
 779 }
 780
 781 //----------------------------------------------------------------------------
 782 void CommandLineArguments::PopulateVariable(
 783   kwsys_stl::vector<char*>* variable, const kwsys_stl::string& value)
 784 {
 785   char* var = new char[ value.size() + 1 ];
 786   strcpy(var, value.c_str());
 787   variable->push_back(var);
 788 }
 789
 790 //----------------------------------------------------------------------------
 791 void CommandLineArguments::PopulateVariable(
 792   kwsys_stl::vector<kwsys_stl::string>* variable,
 793   const kwsys_stl::string& value)
 794 {
 795   variable->push_back(value);
 796 }
 797
 798 //----------------------------------------------------------------------------
 799 bool CommandLineArguments::PopulateVariable(CommandLineArgumentsCallbackStructure* cs,
 800   const char* value)
 801 {
 802   // Call the callback
 803   if ( cs->Callback )
 804     {
 805     if ( !cs->Callback(cs->Argument, value, cs->CallData) )
 806       {
 807       this->Internals->LastArgument --;
 808       return 0;
 809       }
 810     }
 811   CommandLineArguments_DEBUG("Set argument: " << cs->Argument << " to " << value);
 812   if ( cs->Variable )
 813     {
 814     kwsys_stl::string var = "1";
 815     if ( value )
 816       {
 817       var = value;
 818       }
 819     switch ( cs->VariableType )
 820       {
 821     case CommandLineArguments::INT_TYPE:
 822       this->PopulateVariable(static_cast<int*>(cs->Variable), var);
 823       break;
 824     case CommandLineArguments::DOUBLE_TYPE:
 825       this->PopulateVariable(static_cast<double*>(cs->Variable), var);
 826       break;
 827     case CommandLineArguments::STRING_TYPE:
 828       this->PopulateVariable(static_cast<char**>(cs->Variable), var);
 829       break;
 830     case CommandLineArguments::STL_STRING_TYPE:
 831       this->PopulateVariable(static_cast<kwsys_stl::string*>(cs->Variable), var);
 832       break;
 833     case CommandLineArguments::BOOL_TYPE:
 834       this->PopulateVariable(static_cast<bool*>(cs->Variable), var);
 835       break;
 836     case CommandLineArguments::VECTOR_BOOL_TYPE:
 837       this->PopulateVariable(static_cast<kwsys_stl::vector<bool>*>(cs->Variable), var);
 838       break;
 839     case CommandLineArguments::VECTOR_INT_TYPE:
 840       this->PopulateVariable(static_cast<kwsys_stl::vector<int>*>(cs->Variable), var);
 841       break;
 842     case CommandLineArguments::VECTOR_DOUBLE_TYPE:
 843       this->PopulateVariable(static_cast<kwsys_stl::vector<double>*>(cs->Variable), var);
 844       break;
 845     case CommandLineArguments::VECTOR_STRING_TYPE:
 846       this->PopulateVariable(static_cast<kwsys_stl::vector<char*>*>(cs->Variable), var);
 847       break;
 848     case CommandLineArguments::VECTOR_STL_STRING_TYPE:
 849       this->PopulateVariable(static_cast<kwsys_stl::vector<kwsys_stl::string>*>(cs->Variable), var);
 850       break;
 851     default:
 852       kwsys_ios::cerr << "Got unknown variable type: \"" << cs->VariableType << "\"" << kwsys_ios::endl;
 853       this->Internals->LastArgument --;
 854       return 0;
 855       }
 856     }
 857   return 1;
 858 }
 859
 860
 861 } // namespace KWSYS_NAMESPACE