summaryrefslogtreecommitdiffstats
path: root/Source/cmListCommand.cxx
blob: 0542c4fceafa5d7fc9373ba69307ca4e1589a1e2 (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
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing for details.  */
#include "cmListCommand.h"

#include "cmsys/RegularExpression.hxx"
#include <algorithm>
#include <assert.h>
#include <iterator>
#include <sstream>
#include <stdio.h>
#include <stdlib.h> // required for atoi

#include "cmAlgorithms.h"
#include "cmMakefile.h"
#include "cmPolicies.h"
#include "cmSystemTools.h"
#include "cmake.h"

class cmExecutionStatus;

bool cmListCommand::InitialPass(std::vector<std::string> const& args,
                                cmExecutionStatus&)
{
  if (args.size() < 2) {
    this->SetError("must be called with at least two arguments.");
    return false;
  }

  const std::string& subCommand = args[0];
  if (subCommand == "LENGTH") {
    return this->HandleLengthCommand(args);
  }
  if (subCommand == "GET") {
    return this->HandleGetCommand(args);
  }
  if (subCommand == "APPEND") {
    return this->HandleAppendCommand(args);
  }
  if (subCommand == "FIND") {
    return this->HandleFindCommand(args);
  }
  if (subCommand == "INSERT") {
    return this->HandleInsertCommand(args);
  }
  if (subCommand == "REMOVE_AT") {
    return this->HandleRemoveAtCommand(args);
  }
  if (subCommand == "REMOVE_ITEM") {
    return this->HandleRemoveItemCommand(args);
  }
  if (subCommand == "REMOVE_DUPLICATES") {
    return this->HandleRemoveDuplicatesCommand(args);
  }
  if (subCommand == "SORT") {
    return this->HandleSortCommand(args);
  }
  if (subCommand == "REVERSE") {
    return this->HandleReverseCommand(args);
  }
  if (subCommand == "FILTER") {
    return this->HandleFilterCommand(args);
  }

  std::string e = "does not recognize sub-command " + subCommand;
  this->SetError(e);
  return false;
}

bool cmListCommand::GetListString(std::string& listString,
                                  const std::string& var)
{
  // get the old value
  const char* cacheValue = this->Makefile->GetDefinition(var);
  if (!cacheValue) {
    return false;
  }
  listString = cacheValue;
  return true;
}

bool cmListCommand::GetList(std::vector<std::string>& list,
                            const std::string& var)
{
  std::string listString;
  if (!this->GetListString(listString, var)) {
    return false;
  }
  // if the size of the list
  if (listString.empty()) {
    return true;
  }
  // expand the variable into a list
  cmSystemTools::ExpandListArgument(listString, list, true);
  // if no empty elements then just return
  if (std::find(list.begin(), list.end(), std::string()) == list.end()) {
    return true;
  }
  // if we have empty elements we need to check policy CMP0007
  switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0007)) {
    case cmPolicies::WARN: {
      // Default is to warn and use old behavior
      // OLD behavior is to allow compatibility, so recall
      // ExpandListArgument without the true which will remove
      // empty values
      list.clear();
      cmSystemTools::ExpandListArgument(listString, list);
      std::string warn = cmPolicies::GetPolicyWarning(cmPolicies::CMP0007);
      warn += " List has value = [";
      warn += listString;
      warn += "].";
      this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, warn);
      return true;
    }
    case cmPolicies::OLD:
      // OLD behavior is to allow compatibility, so recall
      // ExpandListArgument without the true which will remove
      // empty values
      list.clear();
      cmSystemTools::ExpandListArgument(listString, list);
      return true;
    case cmPolicies::NEW:
      return true;
    case cmPolicies::REQUIRED_IF_USED:
    case cmPolicies::REQUIRED_ALWAYS:
      this->Makefile->IssueMessage(
        cmake::FATAL_ERROR,
        cmPolicies::GetRequiredPolicyError(cmPolicies::CMP0007));
      return false;
  }
  return true;
}

bool cmListCommand::HandleLengthCommand(std::vector<std::string> const& args)
{
  if (args.size() != 3) {
    this->SetError("sub-command LENGTH requires two arguments.");
    return false;
  }

  const std::string& listName = args[1];
  const std::string& variableName = args[args.size() - 1];
  std::vector<std::string> varArgsExpanded;
  // do not check the return value here
  // if the list var is not found varArgsExpanded will have size 0
  // and we will return 0
  this->GetList(varArgsExpanded, listName);
  size_t length = varArgsExpanded.size();
  char buffer[1024];
  sprintf(buffer, "%d", static_cast<int>(length));

  this->Makefile->AddDefinition(variableName, buffer);
  return true;
}

bool cmListCommand::HandleGetCommand(std::vector<std::string> const& args)
{
  if (args.size() < 4) {
    this->SetError("sub-command GET requires at least three arguments.");
    return false;
  }

  const std::string& listName = args[1];
  const std::string& variableName = args[args.size() - 1];
  // expand the variable
  std::vector<std::string> varArgsExpanded;
  if (!this->GetList(varArgsExpanded, listName)) {
    this->Makefile->AddDefinition(variableName, "NOTFOUND");
    return true;
  }
  // FIXME: Add policy to make non-existing lists an error like empty lists.
  if (varArgsExpanded.empty()) {
    this->SetError("GET given empty list");
    return false;
  }

  std::string value;
  size_t cc;
  const char* sep = "";
  size_t nitem = varArgsExpanded.size();
  for (cc = 2; cc < args.size() - 1; cc++) {
    int item = atoi(args[cc].c_str());
    value += sep;
    sep = ";";
    if (item < 0) {
      item = (int)nitem + item;
    }
    if (item < 0 || nitem <= (size_t)item) {
      std::ostringstream str;
      str << "index: " << item << " out of range (-" << nitem << ", "
          << nitem - 1 << ")";
      this->SetError(str.str());
      return false;
    }
    value += varArgsExpanded[item];
  }

  this->Makefile->AddDefinition(variableName, value.c_str());
  return true;
}

bool cmListCommand::HandleAppendCommand(std::vector<std::string> const& args)
{
  assert(args.size() >= 2);

  // Skip if nothing to append.
  if (args.size() < 3) {
    return true;
  }

  const std::string& listName = args[1];
  // expand the variable
  std::string listString;
  this->GetListString(listString, listName);

  if (!listString.empty() && !args.empty()) {
    listString += ";";
  }
  listString += cmJoin(cmMakeRange(args).advance(2), ";");

  this->Makefile->AddDefinition(listName, listString.c_str());
  return true;
}

bool cmListCommand::HandleFindCommand(std::vector<std::string> const& args)
{
  if (args.size() != 4) {
    this->SetError("sub-command FIND requires three arguments.");
    return false;
  }

  const std::string& listName = args[1];
  const std::string& variableName = args[args.size() - 1];
  // expand the variable
  std::vector<std::string> varArgsExpanded;
  if (!this->GetList(varArgsExpanded, listName)) {
    this->Makefile->AddDefinition(variableName, "-1");
    return true;
  }

  std::vector<std::string>::iterator it =
    std::find(varArgsExpanded.begin(), varArgsExpanded.end(), args[2]);
  if (it != varArgsExpanded.end()) {
    std::ostringstream indexStream;
    indexStream << std::distance(varArgsExpanded.begin(), it);
    this->Makefile->AddDefinition(variableName, indexStream.str().c_str());
    return true;
  }

  this->Makefile->AddDefinition(variableName, "-1");
  return true;
}

bool cmListCommand::HandleInsertCommand(std::vector<std::string> const& args)
{
  if (args.size() < 4) {
    this->SetError("sub-command INSERT requires at least three arguments.");
    return false;
  }

  const std::string& listName = args[1];

  // expand the variable
  int item = atoi(args[2].c_str());
  std::vector<std::string> varArgsExpanded;
  if ((!this->GetList(varArgsExpanded, listName) || varArgsExpanded.empty()) &&
      item != 0) {
    std::ostringstream str;
    str << "index: " << item << " out of range (0, 0)";
    this->SetError(str.str());
    return false;
  }

  if (!varArgsExpanded.empty()) {
    size_t nitem = varArgsExpanded.size();
    if (item < 0) {
      item = (int)nitem + item;
    }
    if (item < 0 || nitem <= (size_t)item) {
      std::ostringstream str;
      str << "index: " << item << " out of range (-" << varArgsExpanded.size()
          << ", "
          << (varArgsExpanded.empty() ? 0 : (varArgsExpanded.size() - 1))
          << ")";
      this->SetError(str.str());
      return false;
    }
  }

  varArgsExpanded.insert(varArgsExpanded.begin() + item, args.begin() + 3,
                         args.end());

  std::string value = cmJoin(varArgsExpanded, ";");
  this->Makefile->AddDefinition(listName, value.c_str());
  return true;
}

bool cmListCommand::HandleRemoveItemCommand(
  std::vector<std::string> const& args)
{
  if (args.size() < 3) {
    this->SetError("sub-command REMOVE_ITEM requires two or more arguments.");
    return false;
  }

  const std::string& listName = args[1];
  // expand the variable
  std::vector<std::string> varArgsExpanded;
  if (!this->GetList(varArgsExpanded, listName)) {
    this->SetError("sub-command REMOVE_ITEM requires list to be present.");
    return false;
  }

  std::vector<std::string> remove(args.begin() + 2, args.end());
  std::sort(remove.begin(), remove.end());
  std::vector<std::string>::const_iterator remEnd =
    std::unique(remove.begin(), remove.end());
  std::vector<std::string>::const_iterator remBegin = remove.begin();

  std::vector<std::string>::const_iterator argsEnd =
    cmRemoveMatching(varArgsExpanded, cmMakeRange(remBegin, remEnd));
  std::vector<std::string>::const_iterator argsBegin = varArgsExpanded.begin();
  std::string value = cmJoin(cmMakeRange(argsBegin, argsEnd), ";");
  this->Makefile->AddDefinition(listName, value.c_str());
  return true;
}

bool cmListCommand::HandleReverseCommand(std::vector<std::string> const& args)
{
  assert(args.size() >= 2);
  if (args.size() > 2) {
    this->SetError("sub-command REVERSE only takes one argument.");
    return false;
  }

  const std::string& listName = args[1];
  // expand the variable
  std::vector<std::string> varArgsExpanded;
  if (!this->GetList(varArgsExpanded, listName)) {
    this->SetError("sub-command REVERSE requires list to be present.");
    return false;
  }

  std::string value = cmJoin(cmReverseRange(varArgsExpanded), ";");

  this->Makefile->AddDefinition(listName, value.c_str());
  return true;
}

bool cmListCommand::HandleRemoveDuplicatesCommand(
  std::vector<std::string> const& args)
{
  assert(args.size() >= 2);
  if (args.size() > 2) {
    this->SetError("sub-command REMOVE_DUPLICATES only takes one argument.");
    return false;
  }

  const std::string& listName = args[1];
  // expand the variable
  std::vector<std::string> varArgsExpanded;
  if (!this->GetList(varArgsExpanded, listName)) {
    this->SetError(
      "sub-command REMOVE_DUPLICATES requires list to be present.");
    return false;
  }

  std::vector<std::string>::const_iterator argsEnd =
    cmRemoveDuplicates(varArgsExpanded);
  std::vector<std::string>::const_iterator argsBegin = varArgsExpanded.begin();
  std::string value = cmJoin(cmMakeRange(argsBegin, argsEnd), ";");

  this->Makefile->AddDefinition(listName, value.c_str());
  return true;
}

bool cmListCommand::HandleSortCommand(std::vector<std::string> const& args)
{
  assert(args.size() >= 2);
  if (args.size() > 2) {
    this->SetError("sub-command SORT only takes one argument.");
    return false;
  }

  const std::string& listName = args[1];
  // expand the variable
  std::vector<std::string> varArgsExpanded;
  if (!this->GetList(varArgsExpanded, listName)) {
    this->SetError("sub-command SORT requires list to be present.");
    return false;
  }

  std::sort(varArgsExpanded.begin(), varArgsExpanded.end());

  std::string value = cmJoin(varArgsExpanded, ";");
  this->Makefile->AddDefinition(listName, value.c_str());
  return true;
}

bool cmListCommand::HandleRemoveAtCommand(std::vector<std::string> const& args)
{
  if (args.size() < 3) {
    this->SetError("sub-command REMOVE_AT requires at least "
                   "two arguments.");
    return false;
  }

  const std::string& listName = args[1];
  // expand the variable
  std::vector<std::string> varArgsExpanded;
  if (!this->GetList(varArgsExpanded, listName)) {
    this->SetError("sub-command REMOVE_AT requires list to be present.");
    return false;
  }
  // FIXME: Add policy to make non-existing lists an error like empty lists.
  if (varArgsExpanded.empty()) {
    this->SetError("REMOVE_AT given empty list");
    return false;
  }

  size_t cc;
  std::vector<size_t> removed;
  size_t nitem = varArgsExpanded.size();
  for (cc = 2; cc < args.size(); ++cc) {
    int item = atoi(args[cc].c_str());
    if (item < 0) {
      item = (int)nitem + item;
    }
    if (item < 0 || nitem <= (size_t)item) {
      std::ostringstream str;
      str << "index: " << item << " out of range (-" << nitem << ", "
          << nitem - 1 << ")";
      this->SetError(str.str());
      return false;
    }
    removed.push_back(static_cast<size_t>(item));
  }

  std::sort(removed.begin(), removed.end());
  std::vector<size_t>::const_iterator remEnd =
    std::unique(removed.begin(), removed.end());
  std::vector<size_t>::const_iterator remBegin = removed.begin();

  std::vector<std::string>::const_iterator argsEnd =
    cmRemoveIndices(varArgsExpanded, cmMakeRange(remBegin, remEnd));
  std::vector<std::string>::const_iterator argsBegin = varArgsExpanded.begin();
  std::string value = cmJoin(cmMakeRange(argsBegin, argsEnd), ";");

  this->Makefile->AddDefinition(listName, value.c_str());
  return true;
}

bool cmListCommand::HandleFilterCommand(std::vector<std::string> const& args)
{
  if (args.size() < 2) {
    this->SetError("sub-command FILTER requires a list to be specified.");
    return false;
  }

  if (args.size() < 3) {
    this->SetError("sub-command FILTER requires an operator to be specified.");
    return false;
  }

  if (args.size() < 4) {
    this->SetError("sub-command FILTER requires a mode to be specified.");
    return false;
  }

  const std::string& listName = args[1];
  // expand the variable
  std::vector<std::string> varArgsExpanded;
  if (!this->GetList(varArgsExpanded, listName)) {
    this->SetError("sub-command FILTER requires list to be present.");
    return false;
  }

  const std::string& op = args[2];
  bool includeMatches;
  if (op == "INCLUDE") {
    includeMatches = true;
  } else if (op == "EXCLUDE") {
    includeMatches = false;
  } else {
    this->SetError("sub-command FILTER does not recognize operator " + op);
    return false;
  }

  const std::string& mode = args[3];
  if (mode == "REGEX") {
    if (args.size() != 5) {
      this->SetError("sub-command FILTER, mode REGEX "
                     "requires five arguments.");
      return false;
    }
    return this->FilterRegex(args, includeMatches, listName, varArgsExpanded);
  }

  this->SetError("sub-command FILTER does not recognize mode " + mode);
  return false;
}

class MatchesRegex
{
public:
  MatchesRegex(cmsys::RegularExpression& in_regex, bool in_includeMatches)
    : regex(in_regex)
    , includeMatches(in_includeMatches)
  {
  }

  bool operator()(const std::string& target)
  {
    return regex.find(target) ^ includeMatches;
  }

private:
  cmsys::RegularExpression& regex;
  const bool includeMatches;
};

bool cmListCommand::FilterRegex(std::vector<std::string> const& args,
                                bool includeMatches,
                                std::string const& listName,
                                std::vector<std::string>& varArgsExpanded)
{
  const std::string& pattern = args[4];
  cmsys::RegularExpression regex(pattern);
  if (!regex.is_valid()) {
    std::string error = "sub-command FILTER, mode REGEX ";
    error += "failed to compile regex \"";
    error += pattern;
    error += "\".";
    this->SetError(error);
    return false;
  }

  std::vector<std::string>::iterator argsBegin = varArgsExpanded.begin();
  std::vector<std::string>::iterator argsEnd = varArgsExpanded.end();
  std::vector<std::string>::iterator newArgsEnd =
    std::remove_if(argsBegin, argsEnd, MatchesRegex(regex, includeMatches));

  std::string value = cmJoin(cmMakeRange(argsBegin, newArgsEnd), ";");
  this->Makefile->AddDefinition(listName, value.c_str());
  return true;
}