summaryrefslogtreecommitdiff
path: root/Source/cmCacheManager.cxx
blob: d627465c76828e66b4f40b57552499fe641624e7 (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
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing for details.  */
#include "cmCacheManager.h"

#include <algorithm>
#include <cstdio>
#include <cstring>
#include <sstream>
#include <string>

#include "cmsys/FStream.hxx"
#include "cmsys/Glob.hxx"

#include "cmGeneratedFileStream.h"
#include "cmMessageType.h"
#include "cmMessenger.h"
#include "cmState.h"
#include "cmStringAlgorithms.h"
#include "cmSystemTools.h"
#include "cmVersion.h"

cmCacheManager::cmCacheManager()
{
  this->CacheMajorVersion = 0;
  this->CacheMinorVersion = 0;
}

void cmCacheManager::CleanCMakeFiles(const std::string& path)
{
  std::string glob = cmStrCat(path, "/CMakeFiles/*.cmake");
  cmsys::Glob globIt;
  globIt.FindFiles(glob);
  std::vector<std::string> files = globIt.GetFiles();
  std::for_each(files.begin(), files.end(), cmSystemTools::RemoveFile);
}

bool cmCacheManager::LoadCache(const std::string& path, bool internal,
                               std::set<std::string>& excludes,
                               std::set<std::string>& includes)
{
  std::string cacheFile = cmStrCat(path, "/CMakeCache.txt");
  // clear the old cache, if we are reading in internal values
  if (internal) {
    this->Cache.clear();
  }
  if (!cmSystemTools::FileExists(cacheFile)) {
    this->CleanCMakeFiles(path);
    return false;
  }

  cmsys::ifstream fin(cacheFile.c_str());
  if (!fin) {
    return false;
  }
  const char* realbuffer;
  std::string buffer;
  std::string entryKey;
  unsigned int lineno = 0;
  while (fin) {
    // Format is key:type=value
    std::string helpString;
    CacheEntry e;
    cmSystemTools::GetLineFromStream(fin, buffer);
    lineno++;
    realbuffer = buffer.c_str();
    while (*realbuffer != '0' &&
           (*realbuffer == ' ' || *realbuffer == '\t' || *realbuffer == '\r' ||
            *realbuffer == '\n')) {
      if (*realbuffer == '\n') {
        lineno++;
      }
      realbuffer++;
    }
    // skip blank lines and comment lines
    if (realbuffer[0] == '#' || realbuffer[0] == 0) {
      continue;
    }
    while (realbuffer[0] == '/' && realbuffer[1] == '/') {
      if ((realbuffer[2] == '\\') && (realbuffer[3] == 'n')) {
        helpString += "\n";
        helpString += &realbuffer[4];
      } else {
        helpString += &realbuffer[2];
      }
      cmSystemTools::GetLineFromStream(fin, buffer);
      lineno++;
      realbuffer = buffer.c_str();
      if (!fin) {
        continue;
      }
    }
    e.SetProperty("HELPSTRING", helpString.c_str());
    if (cmState::ParseCacheEntry(realbuffer, entryKey, e.Value, e.Type)) {
      if (excludes.find(entryKey) == excludes.end()) {
        // Load internal values if internal is set.
        // If the entry is not internal to the cache being loaded
        // or if it is in the list of internal entries to be
        // imported, load it.
        if (internal || (e.Type != cmStateEnums::INTERNAL) ||
            (includes.find(entryKey) != includes.end())) {
          // If we are loading the cache from another project,
          // make all loaded entries internal so that it is
          // not visible in the gui
          if (!internal) {
            e.Type = cmStateEnums::INTERNAL;
            helpString = cmStrCat("DO NOT EDIT, ", entryKey,
                                  " loaded from external file.  "
                                  "To change this value edit this file: ",
                                  path, "/CMakeCache.txt");
            e.SetProperty("HELPSTRING", helpString.c_str());
          }
          if (!this->ReadPropertyEntry(entryKey, e)) {
            e.Initialized = true;
            this->Cache[entryKey] = e;
          }
        }
      }
    } else {
      std::ostringstream error;
      error << "Parse error in cache file " << cacheFile;
      error << " on line " << lineno << ". Offending entry: " << realbuffer;
      cmSystemTools::Error(error.str());
    }
  }
  this->CacheMajorVersion = 0;
  this->CacheMinorVersion = 0;
  if (const std::string* cmajor =
        this->GetInitializedCacheValue("CMAKE_CACHE_MAJOR_VERSION")) {
    unsigned int v = 0;
    if (sscanf(cmajor->c_str(), "%u", &v) == 1) {
      this->CacheMajorVersion = v;
    }
    if (const std::string* cminor =
          this->GetInitializedCacheValue("CMAKE_CACHE_MINOR_VERSION")) {
      if (sscanf(cminor->c_str(), "%u", &v) == 1) {
        this->CacheMinorVersion = v;
      }
    }
  } else {
    // CMake version not found in the list file.
    // Set as version 0.0
    this->AddCacheEntry("CMAKE_CACHE_MINOR_VERSION", "0",
                        "Minor version of cmake used to create the "
                        "current loaded cache",
                        cmStateEnums::INTERNAL);
    this->AddCacheEntry("CMAKE_CACHE_MAJOR_VERSION", "0",
                        "Major version of cmake used to create the "
                        "current loaded cache",
                        cmStateEnums::INTERNAL);
  }
  // check to make sure the cache directory has not
  // been moved
  const std::string* oldDir =
    this->GetInitializedCacheValue("CMAKE_CACHEFILE_DIR");
  if (internal && oldDir) {
    std::string currentcwd = path;
    std::string oldcwd = *oldDir;
    cmSystemTools::ConvertToUnixSlashes(currentcwd);
    currentcwd += "/CMakeCache.txt";
    oldcwd += "/CMakeCache.txt";
    if (!cmSystemTools::SameFile(oldcwd, currentcwd)) {
      const std::string* dir =
        this->GetInitializedCacheValue("CMAKE_CACHEFILE_DIR");
      std::ostringstream message;
      message << "The current CMakeCache.txt directory " << currentcwd
              << " is different than the directory " << (dir ? *dir : "")
              << " where CMakeCache.txt was created. This may result "
                 "in binaries being created in the wrong place. If you "
                 "are not sure, reedit the CMakeCache.txt";
      cmSystemTools::Error(message.str());
    }
  }
  return true;
}

const char* cmCacheManager::PersistentProperties[] = { "ADVANCED", "MODIFIED",
                                                       "STRINGS", nullptr };

bool cmCacheManager::ReadPropertyEntry(std::string const& entryKey,
                                       CacheEntry& e)
{
  // All property entries are internal.
  if (e.Type != cmStateEnums::INTERNAL) {
    return false;
  }

  const char* end = entryKey.c_str() + entryKey.size();
  for (const char** p = cmCacheManager::PersistentProperties; *p; ++p) {
    std::string::size_type plen = strlen(*p) + 1;
    if (entryKey.size() > plen && *(end - plen) == '-' &&
        strcmp(end - plen + 1, *p) == 0) {
      std::string key = entryKey.substr(0, entryKey.size() - plen);
      cmCacheManager::CacheIterator it = this->GetCacheIterator(key.c_str());
      if (it.IsAtEnd()) {
        // Create an entry and store the property.
        CacheEntry& ne = this->Cache[key];
        ne.Type = cmStateEnums::UNINITIALIZED;
        ne.SetProperty(*p, e.Value.c_str());
      } else {
        // Store this property on its entry.
        it.SetProperty(*p, e.Value.c_str());
      }
      return true;
    }
  }
  return false;
}

void cmCacheManager::WritePropertyEntries(std::ostream& os, CacheIterator i,
                                          cmMessenger* messenger)
{
  for (const char** p = cmCacheManager::PersistentProperties; *p; ++p) {
    if (const char* value = i.GetProperty(*p)) {
      std::string helpstring =
        cmStrCat(*p, " property for variable: ", i.GetName());
      cmCacheManager::OutputHelpString(os, helpstring);

      std::string key = cmStrCat(i.GetName(), '-', *p);
      cmCacheManager::OutputKey(os, key);
      os << ":INTERNAL=";
      cmCacheManager::OutputValue(os, value);
      os << "\n";
      cmCacheManager::OutputNewlineTruncationWarning(os, key, value,
                                                     messenger);
    }
  }
}

bool cmCacheManager::SaveCache(const std::string& path, cmMessenger* messenger)
{
  std::string cacheFile = cmStrCat(path, "/CMakeCache.txt");
  cmGeneratedFileStream fout(cacheFile);
  fout.SetCopyIfDifferent(true);
  if (!fout) {
    cmSystemTools::Error("Unable to open cache file for save. " + cacheFile);
    cmSystemTools::ReportLastSystemError("");
    return false;
  }
  // before writing the cache, update the version numbers
  // to the
  this->AddCacheEntry("CMAKE_CACHE_MAJOR_VERSION",
                      std::to_string(cmVersion::GetMajorVersion()).c_str(),
                      "Major version of cmake used to create the "
                      "current loaded cache",
                      cmStateEnums::INTERNAL);
  this->AddCacheEntry("CMAKE_CACHE_MINOR_VERSION",
                      std::to_string(cmVersion::GetMinorVersion()).c_str(),
                      "Minor version of cmake used to create the "
                      "current loaded cache",
                      cmStateEnums::INTERNAL);
  this->AddCacheEntry("CMAKE_CACHE_PATCH_VERSION",
                      std::to_string(cmVersion::GetPatchVersion()).c_str(),
                      "Patch version of cmake used to create the "
                      "current loaded cache",
                      cmStateEnums::INTERNAL);

  // Let us store the current working directory so that if somebody
  // Copies it, he will not be surprised
  std::string currentcwd = path;
  if (currentcwd[0] >= 'A' && currentcwd[0] <= 'Z' && currentcwd[1] == ':') {
    // Cast added to avoid compiler warning. Cast is ok because
    // value is guaranteed to fit in char by the above if...
    currentcwd[0] = static_cast<char>(currentcwd[0] - 'A' + 'a');
  }
  cmSystemTools::ConvertToUnixSlashes(currentcwd);
  this->AddCacheEntry("CMAKE_CACHEFILE_DIR", currentcwd.c_str(),
                      "This is the directory where this CMakeCache.txt"
                      " was created",
                      cmStateEnums::INTERNAL);

  /* clang-format off */
  fout << "# This is the CMakeCache file.\n"
       << "# For build in directory: " << currentcwd << "\n"
       << "# It was generated by CMake: "
       << cmSystemTools::GetCMakeCommand() << std::endl;
  /* clang-format on */

  /* clang-format off */
  fout << "# You can edit this file to change values found and used by cmake."
       << std::endl
       << "# If you do not want to change any of the values, simply exit the "
       "editor." << std::endl
       << "# If you do want to change a value, simply edit, save, and exit "
       "the editor." << std::endl
       << "# The syntax for the file is as follows:\n"
       << "# KEY:TYPE=VALUE\n"
       << "# KEY is the name of a variable in the cache.\n"
       << "# TYPE is a hint to GUIs for the type of VALUE, DO NOT EDIT "
       "TYPE!." << std::endl
       << "# VALUE is the current value for the KEY.\n\n";
  /* clang-format on */

  fout << "########################\n";
  fout << "# EXTERNAL cache entries\n";
  fout << "########################\n";
  fout << "\n";

  for (auto const& i : this->Cache) {
    CacheEntry const& ce = i.second;
    cmStateEnums::CacheEntryType t = ce.Type;
    if (!ce.Initialized) {
      /*
        // This should be added in, but is not for now.
      cmSystemTools::Error("Cache entry \"" + i.first + "\" is uninitialized");
      */
    } else if (t != cmStateEnums::INTERNAL) {
      // Format is key:type=value
      if (const char* help = ce.GetProperty("HELPSTRING")) {
        cmCacheManager::OutputHelpString(fout, help);
      } else {
        cmCacheManager::OutputHelpString(fout, "Missing description");
      }
      cmCacheManager::OutputKey(fout, i.first);
      fout << ":" << cmState::CacheEntryTypeToString(t) << "=";
      cmCacheManager::OutputValue(fout, ce.Value);
      fout << "\n";
      cmCacheManager::OutputNewlineTruncationWarning(fout, i.first, ce.Value,
                                                     messenger);
      fout << "\n";
    }
  }

  fout << "\n";
  fout << "########################\n";
  fout << "# INTERNAL cache entries\n";
  fout << "########################\n";
  fout << "\n";

  for (cmCacheManager::CacheIterator i = this->NewIterator(); !i.IsAtEnd();
       i.Next()) {
    if (!i.Initialized()) {
      continue;
    }

    cmStateEnums::CacheEntryType t = i.GetType();
    this->WritePropertyEntries(fout, i, messenger);
    if (t == cmStateEnums::INTERNAL) {
      // Format is key:type=value
      if (const char* help = i.GetProperty("HELPSTRING")) {
        cmCacheManager::OutputHelpString(fout, help);
      }
      cmCacheManager::OutputKey(fout, i.GetName());
      fout << ":" << cmState::CacheEntryTypeToString(t) << "=";
      cmCacheManager::OutputValue(fout, i.GetValue());
      fout << "\n";
      cmCacheManager::OutputNewlineTruncationWarning(fout, i.GetName(),
                                                     i.GetValue(), messenger);
    }
  }
  fout << "\n";
  fout.Close();
  std::string checkCacheFile = cmStrCat(path, "/CMakeFiles");
  cmSystemTools::MakeDirectory(checkCacheFile);
  checkCacheFile += "/cmake.check_cache";
  cmsys::ofstream checkCache(checkCacheFile.c_str());
  if (!checkCache) {
    cmSystemTools::Error("Unable to open check cache file for write. " +
                         checkCacheFile);
    return false;
  }
  checkCache << "# This file is generated by cmake for dependency checking "
                "of the CMakeCache.txt file\n";
  return true;
}

bool cmCacheManager::DeleteCache(const std::string& path)
{
  std::string cacheFile = path;
  cmSystemTools::ConvertToUnixSlashes(cacheFile);
  std::string cmakeFiles = cacheFile;
  cacheFile += "/CMakeCache.txt";
  if (cmSystemTools::FileExists(cacheFile)) {
    cmSystemTools::RemoveFile(cacheFile);
    // now remove the files in the CMakeFiles directory
    // this cleans up language cache files
    cmakeFiles += "/CMakeFiles";
    if (cmSystemTools::FileIsDirectory(cmakeFiles)) {
      cmSystemTools::RemoveADirectory(cmakeFiles);
    }
  }
  return true;
}

void cmCacheManager::OutputKey(std::ostream& fout, std::string const& key)
{
  // support : in key name by double quoting
  const char* q =
    (key.find(':') != std::string::npos || key.find("//") == 0) ? "\"" : "";
  fout << q << key << q;
}

void cmCacheManager::OutputValue(std::ostream& fout, std::string const& value)
{
  // look for and truncate newlines
  std::string::size_type newline = value.find('\n');
  if (newline != std::string::npos) {
    std::string truncated = value.substr(0, newline);
    OutputValueNoNewlines(fout, truncated);
  } else {
    OutputValueNoNewlines(fout, value);
  }
}

void cmCacheManager::OutputValueNoNewlines(std::ostream& fout,
                                           std::string const& value)
{
  // if value has trailing space or tab, enclose it in single quotes
  if (!value.empty() && (value.back() == ' ' || value.back() == '\t')) {
    fout << '\'' << value << '\'';
  } else {
    fout << value;
  }
}

void cmCacheManager::OutputHelpString(std::ostream& fout,
                                      const std::string& helpString)
{
  std::string::size_type end = helpString.size();
  if (end == 0) {
    return;
  }
  std::string oneLine;
  std::string::size_type pos = 0;
  for (std::string::size_type i = 0; i <= end; i++) {
    if ((i == end) || (helpString[i] == '\n') ||
        ((i - pos >= 60) && (helpString[i] == ' '))) {
      fout << "//";
      if (helpString[pos] == '\n') {
        pos++;
        fout << "\\n";
      }
      oneLine = helpString.substr(pos, i - pos);
      fout << oneLine << "\n";
      pos = i;
    }
  }
}

void cmCacheManager::OutputWarningComment(std::ostream& fout,
                                          std::string const& message,
                                          bool wrapSpaces)
{
  std::string::size_type end = message.size();
  std::string oneLine;
  std::string::size_type pos = 0;
  for (std::string::size_type i = 0; i <= end; i++) {
    if ((i == end) || (message[i] == '\n') ||
        ((i - pos >= 60) && (message[i] == ' ') && wrapSpaces)) {
      fout << "# ";
      if (message[pos] == '\n') {
        pos++;
        fout << "\\n";
      }
      oneLine = message.substr(pos, i - pos);
      fout << oneLine << "\n";
      pos = i;
    }
  }
}

void cmCacheManager::OutputNewlineTruncationWarning(std::ostream& fout,
                                                    std::string const& key,
                                                    std::string const& value,
                                                    cmMessenger* messenger)
{
  if (value.find('\n') != std::string::npos) {
    if (messenger) {
      std::string message =
        cmStrCat("Value of ", key, " contained a newline; truncating");
      messenger->IssueMessage(MessageType::WARNING, message);
    }

    std::string comment =
      cmStrCat("WARNING: Value of ", key,
               " contained a newline and was truncated. Original value:");

    OutputWarningComment(fout, comment, true);
    OutputWarningComment(fout, value, false);
  }
}

void cmCacheManager::RemoveCacheEntry(const std::string& key)
{
  auto i = this->Cache.find(key);
  if (i != this->Cache.end()) {
    this->Cache.erase(i);
  }
}

cmCacheManager::CacheEntry* cmCacheManager::GetCacheEntry(
  const std::string& key)
{
  auto i = this->Cache.find(key);
  if (i != this->Cache.end()) {
    return &i->second;
  }
  return nullptr;
}

cmCacheManager::CacheIterator cmCacheManager::GetCacheIterator(const char* key)
{
  return { *this, key };
}

const std::string* cmCacheManager::GetInitializedCacheValue(
  const std::string& key) const
{
  auto i = this->Cache.find(key);
  if (i != this->Cache.end() && i->second.Initialized) {
    return &i->second.Value;
  }
  return nullptr;
}

void cmCacheManager::PrintCache(std::ostream& out) const
{
  out << "=================================================" << std::endl;
  out << "CMakeCache Contents:" << std::endl;
  for (auto const& i : this->Cache) {
    if (i.second.Type != cmStateEnums::INTERNAL) {
      out << i.first << " = " << i.second.Value << std::endl;
    }
  }
  out << "\n\n";
  out << "To change values in the CMakeCache, " << std::endl
      << "edit CMakeCache.txt in your output directory.\n";
  out << "=================================================" << std::endl;
}

void cmCacheManager::AddCacheEntry(const std::string& key, const char* value,
                                   const char* helpString,
                                   cmStateEnums::CacheEntryType type)
{
  CacheEntry& e = this->Cache[key];
  if (value) {
    e.Value = value;
    e.Initialized = true;
  } else {
    e.Value.clear();
  }
  e.Type = type;
  // make sure we only use unix style paths
  if (type == cmStateEnums::FILEPATH || type == cmStateEnums::PATH) {
    if (e.Value.find(';') != std::string::npos) {
      std::vector<std::string> paths = cmExpandedList(e.Value);
      const char* sep = "";
      e.Value = "";
      for (std::string& i : paths) {
        cmSystemTools::ConvertToUnixSlashes(i);
        e.Value += sep;
        e.Value += i;
        sep = ";";
      }
    } else {
      cmSystemTools::ConvertToUnixSlashes(e.Value);
    }
  }
  e.SetProperty("HELPSTRING",
                helpString
                  ? helpString
                  : "(This variable does not exist and should not be used)");
}

bool cmCacheManager::CacheIterator::IsAtEnd() const
{
  return this->Position == this->Container.Cache.end();
}

void cmCacheManager::CacheIterator::Begin()
{
  this->Position = this->Container.Cache.begin();
}

bool cmCacheManager::CacheIterator::Find(const std::string& key)
{
  this->Position = this->Container.Cache.find(key);
  return !this->IsAtEnd();
}

void cmCacheManager::CacheIterator::Next()
{
  if (!this->IsAtEnd()) {
    ++this->Position;
  }
}

std::vector<std::string> cmCacheManager::CacheIterator::GetPropertyList() const
{
  return this->GetEntry().GetPropertyList();
}

void cmCacheManager::CacheIterator::SetValue(const char* value)
{
  if (this->IsAtEnd()) {
    return;
  }
  CacheEntry* entry = &this->GetEntry();
  if (value) {
    entry->Value = value;
    entry->Initialized = true;
  } else {
    entry->Value.clear();
  }
}

bool cmCacheManager::CacheIterator::GetValueAsBool() const
{
  return cmIsOn(this->GetEntry().Value);
}

std::vector<std::string> cmCacheManager::CacheEntry::GetPropertyList() const
{
  return this->Properties.GetKeys();
}

const char* cmCacheManager::CacheEntry::GetProperty(
  const std::string& prop) const
{
  if (prop == "TYPE") {
    return cmState::CacheEntryTypeToString(this->Type);
  }
  if (prop == "VALUE") {
    return this->Value.c_str();
  }
  return this->Properties.GetPropertyValue(prop);
}

void cmCacheManager::CacheEntry::SetProperty(const std::string& prop,
                                             const char* value)
{
  if (prop == "TYPE") {
    this->Type = cmState::StringToCacheEntryType(value ? value : "STRING");
  } else if (prop == "VALUE") {
    this->Value = value ? value : "";
  } else {
    this->Properties.SetProperty(prop, value);
  }
}

void cmCacheManager::CacheEntry::AppendProperty(const std::string& prop,
                                                const char* value,
                                                bool asString)
{
  if (prop == "TYPE") {
    this->Type = cmState::StringToCacheEntryType(value ? value : "STRING");
  } else if (prop == "VALUE") {
    if (value) {
      if (!this->Value.empty() && *value && !asString) {
        this->Value += ";";
      }
      this->Value += value;
    }
  } else {
    this->Properties.AppendProperty(prop, value, asString);
  }
}

const char* cmCacheManager::CacheIterator::GetProperty(
  const std::string& prop) const
{
  if (!this->IsAtEnd()) {
    return this->GetEntry().GetProperty(prop);
  }
  return nullptr;
}

void cmCacheManager::CacheIterator::SetProperty(const std::string& p,
                                                const char* v)
{
  if (!this->IsAtEnd()) {
    this->GetEntry().SetProperty(p, v);
  }
}

void cmCacheManager::CacheIterator::AppendProperty(const std::string& p,
                                                   const char* v,
                                                   bool asString)
{
  if (!this->IsAtEnd()) {
    this->GetEntry().AppendProperty(p, v, asString);
  }
}

bool cmCacheManager::CacheIterator::GetPropertyAsBool(
  const std::string& prop) const
{
  if (const char* value = this->GetProperty(prop)) {
    return cmIsOn(value);
  }
  return false;
}

void cmCacheManager::CacheIterator::SetProperty(const std::string& p, bool v)
{
  this->SetProperty(p, v ? "ON" : "OFF");
}

bool cmCacheManager::CacheIterator::PropertyExists(
  const std::string& prop) const
{
  return this->GetProperty(prop) != nullptr;
}