summaryrefslogtreecommitdiffstats
path: root/Source/kwsys/CommandLineArguments.cxx
blob: 27bf6e60e46908e56ed9089cf1b5e0f643a02d3c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
/*=========================================================================

  Program:   KWSys - Kitware System Library
  Module:    $RCSfile$

  Copyright (c) Kitware, Inc., Insight Consortium.  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#include "kwsysPrivate.h"
#include KWSYS_HEADER(CommandLineArguments.hxx)

#include KWSYS_HEADER(Configure.hxx)

#include KWSYS_HEADER(stl/vector)
#include KWSYS_HEADER(stl/map)
#include KWSYS_HEADER(stl/set)
#include KWSYS_HEADER(ios/sstream)
#include KWSYS_HEADER(ios/iostream)

#include <stdio.h>
#include <stdlib.h>

#ifdef _MSC_VER
# pragma warning (disable: 4786)
#endif

namespace KWSYS_NAMESPACE
{

//----------------------------------------------------------------------------
//============================================================================
class CommandLineArgumentsString : public kwsys_stl::string 
{
public:
  typedef kwsys_stl::string StdString;
  CommandLineArgumentsString(): StdString() {}
  CommandLineArgumentsString(const value_type* s): StdString(s) {}
  CommandLineArgumentsString(const value_type* s, size_type n): StdString(s, n) {}
  CommandLineArgumentsString(const StdString& s, size_type pos=0, size_type n=npos):
    StdString(s, pos, n) {}
};

struct CommandLineArgumentsCallbackStructure
{
  const char* Argument;
  int ArgumentType;
  CommandLineArguments::CallbackType Callback;
  void* CallData;
  void* Variable;
  int VariableType;
  const char* Help;
};
 
class CommandLineArgumentsVectorOfStrings : 
  public kwsys_stl::vector<CommandLineArgumentsString> {};
class CommandLineArgumentsSetOfStrings :
  public kwsys_stl::set<CommandLineArgumentsString> {};
class CommandLineArgumentsMapOfStrucs : 
  public kwsys_stl::map<CommandLineArgumentsString,
    CommandLineArgumentsCallbackStructure> {};

class CommandLineArgumentsInternal
{
public:
  CommandLineArgumentsInternal()
    {
    this->UnknownArgumentCallback = 0;
    this->ClientData = 0;
    this->LastArgument = 0;
    }

  typedef CommandLineArgumentsVectorOfStrings VectorOfStrings;
  typedef CommandLineArgumentsMapOfStrucs CallbacksMap;
  typedef CommandLineArgumentsString String;
  typedef CommandLineArgumentsSetOfStrings SetOfStrings;

  VectorOfStrings Argv;
  CallbacksMap Callbacks;

  CommandLineArguments::ErrorCallbackType UnknownArgumentCallback;
  void*             ClientData;

  VectorOfStrings::size_type LastArgument;
};
//============================================================================
//----------------------------------------------------------------------------

//----------------------------------------------------------------------------
CommandLineArguments::CommandLineArguments()
{
  this->Internals = new CommandLineArguments::Internal;
  this->Help = "";
  this->LineLength = 80;
}

//----------------------------------------------------------------------------
CommandLineArguments::~CommandLineArguments()
{
  delete this->Internals;
}

//----------------------------------------------------------------------------
void CommandLineArguments::Initialize(int argc, const char* const argv[])
{
  int cc;

  this->Initialize();
  for ( cc = 1; cc < argc; cc ++ )
    {
    this->ProcessArgument(argv[cc]);
    }
}

//----------------------------------------------------------------------------
void CommandLineArguments::Initialize(int argc, char* argv[])
{
  int cc;

  this->Initialize();
  for ( cc = 1; cc < argc; cc ++ )
    {
    this->ProcessArgument(argv[cc]);
    }
}

//----------------------------------------------------------------------------
void CommandLineArguments::Initialize()
{
  this->Internals->Argv.clear();
  this->Internals->LastArgument = 0;
}

//----------------------------------------------------------------------------
void CommandLineArguments::ProcessArgument(const char* arg)
{
  this->Internals->Argv.push_back(arg);
}

//----------------------------------------------------------------------------
int CommandLineArguments::Parse()
{
  CommandLineArguments::Internal::VectorOfStrings::size_type cc;
  CommandLineArguments::Internal::VectorOfStrings matches;
  for ( cc = 0; cc < this->Internals->Argv.size(); cc ++ )
    {
    matches.clear();
    CommandLineArguments::Internal::String& arg = this->Internals->Argv[cc];
    CommandLineArguments::Internal::CallbacksMap::iterator it;

    // Does the argument match to any we know about?
    for ( it = this->Internals->Callbacks.begin();
      it != this->Internals->Callbacks.end();
      it ++ )
      {
      const CommandLineArguments::Internal::String& parg = it->first;
      CommandLineArgumentsCallbackStructure *cs = &it->second;
      if (cs->ArgumentType == CommandLineArguments::NO_ARGUMENT ||
        cs->ArgumentType == CommandLineArguments::SPACE_ARGUMENT) 
        {
        if ( arg == parg )
          {
          matches.push_back(parg);
          }
        }
      else if ( arg.find( parg ) == 0 )
        {
        matches.push_back(parg);
        }
      }
    if ( matches.size() > 0 )
      {
      // Ok, we found one or more arguments that match what user specified.
      // Let's find the longest one.
      CommandLineArguments::Internal::VectorOfStrings::size_type kk;
      CommandLineArguments::Internal::VectorOfStrings::size_type maxidx = 0;
      CommandLineArguments::Internal::String::size_type maxlen = 0;
      for ( kk = 0; kk < matches.size(); kk ++ )
        {
        if ( matches[kk].size() > maxlen )
          {
          maxlen = matches[kk].size();
          maxidx = kk;
          }
        }
      // So, the longest one is probably the right one. Now see if it has any
      // additional value
      const char* value = 0;
      CommandLineArgumentsCallbackStructure *cs 
        = &this->Internals->Callbacks[matches[maxidx]];
      const CommandLineArguments::Internal::String& sarg = matches[maxidx];
      if ( cs->ArgumentType == NO_ARGUMENT )
        {
        // No value
        }
      else if ( cs->ArgumentType == SPACE_ARGUMENT )
        {
        if ( cc == this->Internals->Argv.size()-1 )
          {
          return 0;
          }
        // Value is the next argument
        value = this->Internals->Argv[cc+1].c_str();
        cc ++;
        }
      else if ( cs->ArgumentType == EQUAL_ARGUMENT )
        {
        if ( arg.size() == sarg.size() || *(arg.c_str() + sarg.size()) != '=' )
          {
          return 0;
          }
        // Value is everythng followed the '=' sign
        value = arg.c_str() + sarg.size()+1;
        }
      else if ( cs->ArgumentType == CONCAT_ARGUMENT )
        {
        // Value is whatever follows the argument
        value = arg.c_str() + sarg.size();
        }

      // Call the callback
      if ( cs->Callback )
        {
        if ( !cs->Callback(sarg.c_str(), value, cs->CallData) )
          {
          return 0;
          }
        }
      if ( cs->Variable )
        {
        kwsys_stl::string var = "1";
        if ( value )
          {
          var = value;
          }
        if ( cs->VariableType == CommandLineArguments::INT_TYPE )
          {
          int* variable = static_cast<int*>(cs->Variable);
          char* res = 0;
          *variable = strtol(var.c_str(), &res, 10);
          //if ( res && *res )
          //  {
          //  Can handle non-int
          //  }
          }
        else if ( cs->VariableType == CommandLineArguments::DOUBLE_TYPE )
          {
          double* variable = static_cast<double*>(cs->Variable);
          char* res = 0;
          *variable = strtod(var.c_str(), &res);
          //if ( res && *res )
          //  {
          //  Can handle non-int
          //  }
          }
        else if ( cs->VariableType == CommandLineArguments::STRING_TYPE )
          {
          char** variable = static_cast<char**>(cs->Variable);
          if ( *variable )
            {
            delete [] *variable;
            *variable = 0;
            }
          *variable = new char[ strlen(var.c_str()) + 1 ];
          strcpy(*variable, var.c_str());
          }
        else if ( cs->VariableType == CommandLineArguments::STL_STRING_TYPE )
          {
          kwsys_stl::string* variable = static_cast<kwsys_stl::string*>(cs->Variable);
          *variable = var;
          }
        else if ( cs->VariableType == CommandLineArguments::BOOL_TYPE )
          {
          bool* variable = static_cast<bool*>(cs->Variable);
          if ( var == "1" || var == "ON" || var == "TRUE" || var == "true" || var == "on" ||
            var == "True" || var == "yes" || var == "Yes" || var == "YES" )
            {
            *variable = true;
            }
          else
            {
            *variable = false;
            }
          }
        else
          {
          kwsys_ios::cerr << "Got unknown argument type: \"" << cs->VariableType << "\"" << kwsys_ios::endl;
          return 0;
          }
        }
      }
    else
      {
      // Handle unknown arguments
      if ( this->Internals->UnknownArgumentCallback )
        {
        if ( !this->Internals->UnknownArgumentCallback(arg.c_str(), 
            this->Internals->ClientData) )
          {
          return 0;
          }
        return 1;
        }
      else
        {
        kwsys_ios::cerr << "Got unknown argument: \"" << arg.c_str() << "\"" << kwsys_ios::endl;
        return 0;
        }
      }
    }
  // We are done parsing, so remember what was the last argument
  this->Internals->LastArgument = cc;
  return 1;
}

//----------------------------------------------------------------------------
void CommandLineArguments::GetRemainingArguments(int* argc, char*** argv)
{
  CommandLineArguments::Internal::VectorOfStrings::size_type size 
    = this->Internals->Argv.size() - this->Internals->LastArgument + 1;
  CommandLineArguments::Internal::VectorOfStrings::size_type cc;

  char** args = new char*[ size ];
  args[0] = new char[ this->Internals->Argv[0].size() + 1 ];
  strcpy(args[0], this->Internals->Argv[0].c_str());
  int cnt = 1;
  for ( cc = this->Internals->LastArgument; 
    cc < this->Internals->Argv.size(); cc ++ )
    {
    args[cnt] = new char[ this->Internals->Argv[cc].size() + 1];
    strcpy(args[cnt], this->Internals->Argv[cc].c_str());
    cnt ++;
    }
  *argc = cnt;
  *argv = args;
}

//----------------------------------------------------------------------------
void CommandLineArguments::AddCallback(const char* argument, ArgumentTypeEnum type, 
  CallbackType callback, void* call_data, const char* help)
{
  CommandLineArgumentsCallbackStructure s;
  s.Argument     = argument;
  s.ArgumentType = type;
  s.Callback     = callback;
  s.CallData     = call_data;
  s.VariableType = CommandLineArguments::NO_VARIABLE_TYPE;
  s.Variable     = 0;
  s.Help         = help;

  this->Internals->Callbacks[argument] = s;
  this->GenerateHelp();
}

//----------------------------------------------------------------------------
void CommandLineArguments::AddArgument(const char* argument, ArgumentTypeEnum type,
  VariableTypeEnum vtype, void* variable, const char* help)
{
  CommandLineArgumentsCallbackStructure s;
  s.Argument     = argument;
  s.ArgumentType = type;
  s.Callback     = 0;
  s.CallData     = 0;
  s.VariableType = vtype;
  s.Variable     = variable;
  s.Help         = help;

  this->Internals->Callbacks[argument] = s;
  this->GenerateHelp();
}

//----------------------------------------------------------------------------
void CommandLineArguments::AddArgument(const char* argument, ArgumentTypeEnum type,
  int* variable, const char* help)
{
  this->AddArgument(argument, type, CommandLineArguments::INT_TYPE, variable, help);
}

//----------------------------------------------------------------------------
void CommandLineArguments::AddArgument(const char* argument, ArgumentTypeEnum type,
  double* variable, const char* help)
{
  this->AddArgument(argument, type, CommandLineArguments::DOUBLE_TYPE, variable, help);
}

//----------------------------------------------------------------------------
void CommandLineArguments::AddArgument(const char* argument, ArgumentTypeEnum type,
  char** variable, const char* help)
{
  this->AddArgument(argument, type, CommandLineArguments::STRING_TYPE, variable, help);
}

//----------------------------------------------------------------------------
void CommandLineArguments::AddArgument(const char* argument, ArgumentTypeEnum type,
  kwsys_stl::string* variable, const char* help)
{
  this->AddArgument(argument, type, CommandLineArguments::STL_STRING_TYPE, variable, help);
}

//----------------------------------------------------------------------------
void CommandLineArguments::AddArgument(const char* argument, ArgumentTypeEnum type,
  bool* variable, const char* help)
{
  this->AddArgument(argument, type, CommandLineArguments::BOOL_TYPE, variable, help);
}

//----------------------------------------------------------------------------
void CommandLineArguments::AddBooleanArgument(const char* argument, bool*
  variable, const char* help)
{
  this->AddArgument(argument, CommandLineArguments::NO_ARGUMENT,
    CommandLineArguments::BOOL_TYPE, variable, help);
}

//----------------------------------------------------------------------------
void CommandLineArguments::AddBooleanArgument(const char* argument, int*
  variable, const char* help)
{
  this->AddArgument(argument, CommandLineArguments::NO_ARGUMENT,
    CommandLineArguments::INT_TYPE, variable, help);
}

//----------------------------------------------------------------------------
void CommandLineArguments::SetClientData(void* client_data)
{
  this->Internals->ClientData = client_data;
}

//----------------------------------------------------------------------------
void CommandLineArguments::SetUnknownArgumentCallback(
  CommandLineArguments::ErrorCallbackType callback)
{
  this->Internals->UnknownArgumentCallback = callback;
}

//----------------------------------------------------------------------------
const char* CommandLineArguments::GetHelp(const char* arg)
{
  CommandLineArguments::Internal::CallbacksMap::iterator it 
    = this->Internals->Callbacks.find(arg);
  if ( it == this->Internals->Callbacks.end() )
    {
    return 0;
    }

  // Since several arguments may point to the same argument, find the one this
  // one point to if this one is pointing to another argument.
  CommandLineArgumentsCallbackStructure *cs = &(it->second);
  while ( 1 )
    {
    CommandLineArguments::Internal::CallbacksMap::iterator hit 
      = this->Internals->Callbacks.find(cs->Help);
    if ( hit == this->Internals->Callbacks.end() )
      {
      return cs->Help;
      }
    cs = &(hit->second);
    }
  // Should never happened
  return 0;
}

//----------------------------------------------------------------------------
void CommandLineArguments::GenerateHelp()
{
  kwsys_ios::ostringstream str;

  // Collapse all arguments into the map of vectors of all arguments that do
  // the same thing.
  CommandLineArguments::Internal::CallbacksMap::iterator it;
  typedef kwsys_stl::map<CommandLineArguments::Internal::String, 
     CommandLineArguments::Internal::SetOfStrings > MapArgs;
  MapArgs mp;
  MapArgs::iterator mpit, smpit;
  for ( it = this->Internals->Callbacks.begin();
    it != this->Internals->Callbacks.end();
    it ++ )
    {
    CommandLineArgumentsCallbackStructure *cs = &(it->second);
    mpit = mp.find(cs->Help);
    if ( mpit != mp.end() )
      {
      mpit->second.insert(it->first);
      mp[it->first].insert(it->first);
      }
    else
      {
      mp[it->first].insert(it->first);
      }
    }
  for ( it = this->Internals->Callbacks.begin();
    it != this->Internals->Callbacks.end();
    it ++ )
    {
    CommandLineArgumentsCallbackStructure *cs = &(it->second);
    mpit = mp.find(cs->Help);
    if ( mpit != mp.end() )
      {
      mpit->second.insert(it->first);
      smpit = mp.find(it->first);
      CommandLineArguments::Internal::SetOfStrings::iterator sit;
      for ( sit = smpit->second.begin(); sit != smpit->second.end(); sit++ )
        {
        mpit->second.insert(*sit);
        }
      mp.erase(smpit);
      }
    else
      {
      mp[it->first].insert(it->first);
      }
    }
 
  // Find the length of the longest string
  CommandLineArguments::Internal::String::size_type maxlen = 0;
  for ( mpit = mp.begin();
    mpit != mp.end();
    mpit ++ )
    {
    CommandLineArguments::Internal::SetOfStrings::iterator sit;
    for ( sit = mpit->second.begin(); sit != mpit->second.end(); sit++ )
      {
      CommandLineArguments::Internal::String::size_type clen = sit->size();
      switch ( this->Internals->Callbacks[*sit].ArgumentType )
        {
        case CommandLineArguments::NO_ARGUMENT:     clen += 0; break;
        case CommandLineArguments::CONCAT_ARGUMENT: clen += 6; break;
        case CommandLineArguments::SPACE_ARGUMENT:  clen += 7; break;
        case CommandLineArguments::EQUAL_ARGUMENT:  clen += 7; break;
        }
      if ( clen > maxlen )
        {
        maxlen = clen;
        }
      }
    }

  // Create format for that string
  char format[80];
  sprintf(format, "%%%ds", static_cast<unsigned int>(maxlen));


  // Print help for each option
  for ( mpit = mp.begin();
    mpit != mp.end();
    mpit ++ )
    {
    CommandLineArguments::Internal::SetOfStrings::iterator sit;
    for ( sit = mpit->second.begin(); sit != mpit->second.end(); sit++ )
      {
      str << kwsys_ios::endl;
      char argument[100];
      sprintf(argument, sit->c_str());
      switch ( this->Internals->Callbacks[*sit].ArgumentType )
        {
        case CommandLineArguments::NO_ARGUMENT: break;
        case CommandLineArguments::CONCAT_ARGUMENT: strcat(argument, "option"); break;
        case CommandLineArguments::SPACE_ARGUMENT:  strcat(argument, " option"); break;
        case CommandLineArguments::EQUAL_ARGUMENT:  strcat(argument, "=option"); break;
        }
      char buffer[80];
      sprintf(buffer, format, argument);
      str << buffer;
      }
    str << "\t";
    const char* ptr = this->Internals->Callbacks[mpit->first].Help;
    int len = strlen(ptr);
    int cnt = 0;
    while ( len > 0)
      {
      // If argument with help is longer than line length, split it on previous
      // space (or tab) and continue on the next line
      CommandLineArguments::Internal::String::size_type cc;
      for ( cc = 0; ptr[cc]; cc ++ )
        {
        if ( *ptr == ' ' || *ptr == '\t' )
          {
          ptr ++;
          len --;
          }
        }
      if ( cnt > 0 )
        {
        for ( cc = 0; cc < maxlen; cc ++ )
          {
          str << " ";
          }
        str << "\t";
        }
      CommandLineArguments::Internal::String::size_type skip = len;
      if ( skip > this->LineLength - maxlen )
        {
        skip = this->LineLength - maxlen;
        for ( cc = skip-1; cc > 0; cc -- )
          {
          if ( ptr[cc] == ' ' || ptr[cc] == '\t' )
            {
            break;
            }
          }
        if ( cc != 0 )
          {
          skip = cc;
          }
        }
      str.write(ptr, skip);
      str << kwsys_ios::endl;
      ptr += skip;
      len -= skip;
      cnt ++;
      }
    }
  this->Help = str.str();
}

} // namespace KWSYS_NAMESPACE