cmStringCommand.cxx 11.2 KB
Newer Older
Brad King's avatar
Brad King committed
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
/*=========================================================================

  Program:   CMake - Cross-Platform Makefile Generator
  Module:    $RCSfile$
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html 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 "cmStringCommand.h"

//----------------------------------------------------------------------------
bool cmStringCommand::InitialPass(std::vector<std::string> const& args)
{
  if(args.size() < 1)
    {
    this->SetError("must be called with at least one argument.");
    return false;
    }
  
  std::string subCommand = args[0];
  if(subCommand == "REGEX")
    {
    return this->HandleRegexCommand(args);
    }  
33
34
35
  else if(subCommand == "COMPARE")
    {
    return this->HandleCompareCommand(args);
36
37
38
39
40
    }
  else if(subCommand == "ASCII")
    {
    return this->HandleAsciiCommand(args);
    }
Brad King's avatar
Brad King committed
41
42
43
44
45
46
47
  
  std::string e = "does not recognize sub-command "+subCommand;
  this->SetError(e.c_str());
  return false;
}

//----------------------------------------------------------------------------
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
bool cmStringCommand::HandleAsciiCommand(std::vector<std::string> const& args)
{
  if ( args.size() <= 1 )
    {
    this->SetError("No output variable specified");
    return false;
    }
  std::string::size_type cc;
  std::string outvar = args[args.size()-1];
  std::string output = "";
  for ( cc = 1; cc < args.size()-1; cc ++ )
    {
    int ch = atoi(args[cc].c_str());
    if ( ch > 0 && ch < 256 )
      {
      output += static_cast<char>(ch);
      }
    else
      {
      std::string error = "Character with code ";
      error += ch;
      error += " does not exist.";
      this->SetError(error.c_str());
      return false;
      }
    }
  // Store the output in the provided variable.
  m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
  return true;
}

//----------------------------------------------------------------------------
Brad King's avatar
Brad King committed
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
bool cmStringCommand::HandleRegexCommand(std::vector<std::string> const& args)
{
  if(args.size() < 2)
    {
    this->SetError("sub-command REGEX requires a mode to be specified.");
    return false;
    }
  std::string mode = args[1];
  if(mode == "MATCH")
    {
    if(args.size() < 5)
      {
      this->SetError("sub-command REGEX, mode MATCH needs "
                     "at least 5 arguments total to command.");
      return false;
      }
    return this->RegexMatch(args);
    }
  else if(mode == "MATCHALL")
    {
    if(args.size() < 5)
      {
      this->SetError("sub-command REGEX, mode MATCHALL needs "
                     "at least 5 arguments total to command.");
      return false;
      }
    return this->RegexMatchAll(args);
    }
  else if(mode == "REPLACE")
    {
    if(args.size() < 6)
      {
      this->SetError("sub-command REGEX, mode MATCH needs "
                     "at least 6 arguments total to command.");
      return false;
      }
    return this->RegexReplace(args);
    }
  
  std::string e = "sub-command REGEX does not recognize mode "+mode;
  this->SetError(e.c_str());
  return false;
}

//----------------------------------------------------------------------------
bool cmStringCommand::RegexMatch(std::vector<std::string> const& args)
{
  //"STRING(REGEX MATCH <regular_expression> <output variable> <input> [<input>...])\n";
  std::string regex = args[2];
  std::string outvar = args[3];
  
  // Concatenate all the last arguments together.
  std::string input = args[4];
133
  for(unsigned int i=5; i < args.size(); ++i)
Brad King's avatar
Brad King committed
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
    {
    input += args[i];
    }
  
  // Compile the regular expression.
  cmRegularExpression re;
  if(!re.compile(regex.c_str()))
    {
    std::string e = "sub-command REGEX, mode MATCH failed to compile regex \""+regex+"\".";
    this->SetError(e.c_str());
    return false;
    }
  
  // Scan through the input for all matches.
  std::string output;
  if(re.find(input.c_str()))
    {
    std::string::size_type l = re.start();
    std::string::size_type r = re.end();
    if(r-l == 0)
      {
      std::string e = "sub-command REGEX, mode MATCH regex \""+regex+"\" matched an empty string.";
      this->SetError(e.c_str());
      return false;
      }
    output = input.substr(l, r-l);
    }
  
  // Store the output in the provided variable.
  m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
  return true;
}

//----------------------------------------------------------------------------
bool cmStringCommand::RegexMatchAll(std::vector<std::string> const& args)
{
  //"STRING(REGEX MATCHALL <regular_expression> <output variable> <input> [<input>...])\n";
  std::string regex = args[2];
  std::string outvar = args[3];
  
  // Concatenate all the last arguments together.
  std::string input = args[4];
176
  for(unsigned int i=5; i < args.size(); ++i)
Brad King's avatar
Brad King committed
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
    {
    input += args[i];
    }
  
  // Compile the regular expression.
  cmRegularExpression re;
  if(!re.compile(regex.c_str()))
    {
    std::string e = "sub-command REGEX, mode MATCHALL failed to compile regex \""+regex+"\".";
    this->SetError(e.c_str());
    return false;
    }
  
  // Scan through the input for all matches.
  std::string output;
  const char* p = input.c_str();
  while(re.find(p))
    {
    std::string::size_type l = re.start();
    std::string::size_type r = re.end();
    if(r-l == 0)
      {
      std::string e = "sub-command REGEX, mode MATCHALL regex \""+regex+"\" matched an empty string.";
      this->SetError(e.c_str());
      return false;
      }
    if(output.length() > 0)
      {
      output += ";";
      }
    output += std::string(p+l, r-l);
    p += r;
    }
  
  // Store the output in the provided variable.
  m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
  return true;
}

//----------------------------------------------------------------------------
bool cmStringCommand::RegexReplace(std::vector<std::string> const& args)
{
  //"STRING(REGEX REPLACE <regular_expression> <replace_expression> <output variable> <input> [<input>...])\n"
  std::string regex = args[2];
  std::string replace = args[3];  
  std::string outvar = args[4];
  
  // Pull apart the replace expression to find the escaped [0-9] values.
  std::vector<RegexReplacement> replacement;
  std::string::size_type l = 0;
  while(l < replace.length())
    {
    std::string::size_type r = replace.find("\\", l);
    if(r == std::string::npos)
      {
      r = replace.length();
      replacement.push_back(replace.substr(l, r-l));
      }
    else
      {
      if(r-l > 0)
        {
        replacement.push_back(replace.substr(l, r-l));
        }
      if(r == (replace.length()-1))
        {
        this->SetError("sub-command REGEX, mode REPLACE: "
                       "replace-expression ends in a backslash.");
        return false;
        }
      if((replace[r+1] >= '0') && (replace[r+1] <= '9'))
        {
        replacement.push_back(replace[r+1]-'0');
        }
      else if(replace[r+1] == 'n')
        {
        replacement.push_back("\n");
        }
      else if(replace[r+1] == '\\')
        {
        replacement.push_back("\\");
        }
      else
        {
        std::string e = "sub-command REGEX, mode REPLACE: Unknown escape \"";
        e += replace.substr(r, 2);
        e += "\"in replace-expression.";
        this->SetError(e.c_str());
        return false;
        }
      r += 2;
      }
    l = r;
    }
  
  // Concatenate all the last arguments together.
  std::string input = args[5];
274
  for(unsigned int i=6; i < args.size(); ++i)
Brad King's avatar
Brad King committed
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
    {
    input += args[i];
    }
  
  // Compile the regular expression.
  cmRegularExpression re;
  if(!re.compile(regex.c_str()))
    {
    std::string e = "sub-command REGEX, mode REPLACE failed to compile regex \""+regex+"\".";
    this->SetError(e.c_str());
    return false;
    }
  
  // Scan through the input for all matches.
  std::string output;
  std::string::size_type base = 0;
  while(re.find(input.c_str()+base))
    {
Ken Martin's avatar
Ken Martin committed
293
    std::string::size_type l2 = re.start();
Brad King's avatar
Brad King committed
294
295
296
    std::string::size_type r = re.end();
    
    // Concatenate the part of the input that was not matched.
Ken Martin's avatar
Ken Martin committed
297
    output += input.substr(base, l2);
Brad King's avatar
Brad King committed
298
299
    
    // Make sure the match had some text.
Ken Martin's avatar
Ken Martin committed
300
    if(r-l2 == 0)
Brad King's avatar
Brad King committed
301
302
303
304
305
306
307
      {
      std::string e = "sub-command REGEX, mode REPLACE regex \""+regex+"\" matched an empty string.";
      this->SetError(e.c_str());
      return false;
      }
    
    // Concatenate the replacement for the match.
308
    for(unsigned int i=0; i < replacement.size(); ++i)
Brad King's avatar
Brad King committed
309
310
311
312
313
314
315
316
317
318
319
320
321
322
      {
      if(replacement[i].number < 0)
        {
        // This is just a plain-text part of the replacement.
        output += replacement[i].value;
        }
      else
        {
        // Replace with part of the match.
        int n = replacement[i].number;
        std::string::size_type start = re.start(n);
        std::string::size_type end = re.end(n);
        std::string::size_type len = input.length()-base;
        if((start != std::string::npos) && (end != std::string::npos) &&
323
           (start <= len) && (end <= len))
Brad King's avatar
Brad King committed
324
          {
325
          output += input.substr(base+start, end-start);
Brad King's avatar
Brad King committed
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
          }
        else
          {
          std::string e =
            "sub-command REGEX, mode REPLACE: replace expression \""+
            replace+"\" contains an out-of-range escape for regex \""+
            regex+"\".";
          this->SetError(e.c_str());
          return false;
          }
        }
      }
    
    // Move past the match.
    base += r;
    }
  
  // Concatenate the text after the last match.
  output += input.substr(base, input.length()-base);
  
  // Store the output in the provided variable.
  m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
  return true;
}
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

//----------------------------------------------------------------------------
bool cmStringCommand::HandleCompareCommand(std::vector<std::string> const& args)
{
  if(args.size() < 2)
    {
    this->SetError("sub-command COMPARE requires a mode to be specified.");
    return false;
    }
  std::string mode = args[1];
  if((mode == "EQUAL") || (mode == "NOTEQUAL") ||
     (mode == "LESS") || (mode == "GREATER"))
    {
    if(args.size() < 5)
      {
      std::string e = "sub-command COMPARE, mode ";
      e += mode;
      e += " needs at least 5 arguments total to command.";
      this->SetError(e.c_str());
      return false;
      }
    
    const std::string& left = args[2];
    const std::string& right = args[3];  
    const std::string& outvar = args[4];
    bool result;
    if(mode == "LESS")
      {
      result = (left < right);
      }
    else if(mode == "GREATER")
      {
      result = (left > right);
      }
    else if(mode == "EQUAL")
      {
      result = (left == right);
      }
    else // if(mode == "NOTEQUAL")
      {
      result = !(left == right);
      }
    if(result)
      {
      m_Makefile->AddDefinition(outvar.c_str(), "1");
      }
    else
      {
      m_Makefile->AddDefinition(outvar.c_str(), "0");
      }
    return true;
    }  
  std::string e = "sub-command COMPARE does not recognize mode "+mode;
  this->SetError(e.c_str());
  return false;
}