summaryrefslogtreecommitdiff
path: root/Source/CTest/cmCTestScriptHandler.cxx
blob: 4808c36aa3466aacacf2ee401cdb2780b95d0370 (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
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing for details.  */
#include "cmCTestScriptHandler.h"

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <map>
#include <ratio>
#include <sstream>
#include <utility>

#include <cm/memory>

#include "cmsys/Directory.hxx"
#include "cmsys/Process.h"

#include "cmCTest.h"
#include "cmCTestBuildCommand.h"
#include "cmCTestCommand.h"
#include "cmCTestConfigureCommand.h"
#include "cmCTestCoverageCommand.h"
#include "cmCTestEmptyBinaryDirectoryCommand.h"
#include "cmCTestMemCheckCommand.h"
#include "cmCTestReadCustomFilesCommand.h"
#include "cmCTestRunScriptCommand.h"
#include "cmCTestSleepCommand.h"
#include "cmCTestStartCommand.h"
#include "cmCTestSubmitCommand.h"
#include "cmCTestTestCommand.h"
#include "cmCTestUpdateCommand.h"
#include "cmCTestUploadCommand.h"
#include "cmCommand.h"
#include "cmDuration.h"
#include "cmGeneratedFileStream.h"
#include "cmGlobalGenerator.h"
#include "cmMakefile.h"
#include "cmProperty.h"
#include "cmState.h"
#include "cmStateDirectory.h"
#include "cmStateSnapshot.h"
#include "cmStringAlgorithms.h"
#include "cmSystemTools.h"
#include "cmake.h"

#ifdef _WIN32
#  include <windows.h>
#else
#  include <unistd.h>
#endif

#define CTEST_INITIAL_CMAKE_OUTPUT_FILE_NAME "CTestInitialCMakeOutput.log"

cmCTestScriptHandler::cmCTestScriptHandler() = default;

void cmCTestScriptHandler::Initialize()
{
  this->Superclass::Initialize();
  this->Backup = false;
  this->EmptyBinDir = false;
  this->EmptyBinDirOnce = false;

  this->SourceDir.clear();
  this->BinaryDir.clear();
  this->BackupSourceDir.clear();
  this->BackupBinaryDir.clear();
  this->CTestRoot.clear();
  this->CVSCheckOut.clear();
  this->CTestCmd.clear();
  this->UpdateCmd.clear();
  this->CTestEnv.clear();
  this->InitialCache.clear();
  this->CMakeCmd.clear();
  this->CMOutFile.clear();
  this->ExtraUpdates.clear();

  this->MinimumInterval = 20 * 60;
  this->ContinuousDuration = -1;

  // what time in seconds did this script start running
  this->ScriptStartTime = std::chrono::steady_clock::time_point();

  this->Makefile.reset();
  this->ParentMakefile = nullptr;

  this->GlobalGenerator.reset();

  this->CMake.reset();
}

cmCTestScriptHandler::~cmCTestScriptHandler() = default;

// just adds an argument to the vector
void cmCTestScriptHandler::AddConfigurationScript(const char* script,
                                                  bool pscope)
{
  this->ConfigurationScripts.emplace_back(script);
  this->ScriptProcessScope.push_back(pscope);
}

// the generic entry point for handling scripts, this routine will run all
// the scripts provides a -S arguments
int cmCTestScriptHandler::ProcessHandler()
{
  int res = 0;
  for (size_t i = 0; i < this->ConfigurationScripts.size(); ++i) {
    // for each script run it
    res |= this->RunConfigurationScript(
      cmSystemTools::CollapseFullPath(this->ConfigurationScripts[i]),
      this->ScriptProcessScope[i]);
  }
  if (res) {
    return -1;
  }
  return 0;
}

void cmCTestScriptHandler::UpdateElapsedTime()
{
  if (this->Makefile) {
    // set the current elapsed time
    auto itime = cmDurationTo<unsigned int>(std::chrono::steady_clock::now() -
                                            this->ScriptStartTime);
    auto timeString = std::to_string(itime);
    this->Makefile->AddDefinition("CTEST_ELAPSED_TIME", timeString);
  }
}

void cmCTestScriptHandler::AddCTestCommand(
  std::string const& name, std::unique_ptr<cmCTestCommand> command)
{
  command->CTest = this->CTest;
  command->CTestScriptHandler = this;
  this->CMake->GetState()->AddBuiltinCommand(name, std::move(command));
}

int cmCTestScriptHandler::ExecuteScript(const std::string& total_script_arg)
{
  // execute the script passing in the arguments to the script as well as the
  // arguments from this invocation of cmake
  std::vector<const char*> argv;
  argv.push_back(cmSystemTools::GetCTestCommand().c_str());
  argv.push_back("-SR");
  argv.push_back(total_script_arg.c_str());

  cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
             "Executable for CTest is: " << cmSystemTools::GetCTestCommand()
                                         << "\n");

  // now pass through all the other arguments
  std::vector<std::string>& initArgs =
    this->CTest->GetInitialCommandLineArguments();
  //*** need to make sure this does not have the current script ***
  for (size_t i = 1; i < initArgs.size(); ++i) {
    argv.push_back(initArgs[i].c_str());
  }
  argv.push_back(nullptr);

  // Now create process object
  cmsysProcess* cp = cmsysProcess_New();
  cmsysProcess_SetCommand(cp, argv.data());
  // cmsysProcess_SetWorkingDirectory(cp, dir);
  cmsysProcess_SetOption(cp, cmsysProcess_Option_HideWindow, 1);
  // cmsysProcess_SetTimeout(cp, timeout);
  cmsysProcess_Execute(cp);

  std::vector<char> out;
  std::vector<char> err;
  std::string line;
  int pipe =
    cmSystemTools::WaitForLine(cp, line, std::chrono::seconds(100), out, err);
  while (pipe != cmsysProcess_Pipe_None) {
    cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
               "Output: " << line << "\n");
    if (pipe == cmsysProcess_Pipe_STDERR) {
      cmCTestLog(this->CTest, ERROR_MESSAGE, line << "\n");
    } else if (pipe == cmsysProcess_Pipe_STDOUT) {
      cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT, line << "\n");
    }
    pipe = cmSystemTools::WaitForLine(cp, line, std::chrono::seconds(100), out,
                                      err);
  }

  // Properly handle output of the build command
  cmsysProcess_WaitForExit(cp, nullptr);
  int result = cmsysProcess_GetState(cp);
  int retVal = 0;
  bool failed = false;
  if (result == cmsysProcess_State_Exited) {
    retVal = cmsysProcess_GetExitValue(cp);
  } else if (result == cmsysProcess_State_Exception) {
    retVal = cmsysProcess_GetExitException(cp);
    cmCTestLog(this->CTest, ERROR_MESSAGE,
               "\tThere was an exception: "
                 << cmsysProcess_GetExceptionString(cp) << " " << retVal
                 << std::endl);
    failed = true;
  } else if (result == cmsysProcess_State_Expired) {
    cmCTestLog(this->CTest, ERROR_MESSAGE,
               "\tThere was a timeout" << std::endl);
    failed = true;
  } else if (result == cmsysProcess_State_Error) {
    cmCTestLog(this->CTest, ERROR_MESSAGE,
               "\tError executing ctest: " << cmsysProcess_GetErrorString(cp)
                                           << std::endl);
    failed = true;
  }
  cmsysProcess_Delete(cp);
  if (failed) {
    std::ostringstream message;
    message << "Error running command: [";
    message << result << "] ";
    for (const char* arg : argv) {
      if (arg) {
        message << arg << " ";
      }
    }
    cmCTestLog(this->CTest, ERROR_MESSAGE,
               message.str() << argv[0] << std::endl);
    return -1;
  }
  return retVal;
}

void cmCTestScriptHandler::CreateCMake()
{
  // create a cmake instance to read the configuration script
  this->CMake = cm::make_unique<cmake>(cmake::RoleScript, cmState::CTest);
  this->CMake->SetHomeDirectory("");
  this->CMake->SetHomeOutputDirectory("");
  this->CMake->GetCurrentSnapshot().SetDefaultDefinitions();
  this->CMake->AddCMakePaths();
  this->GlobalGenerator =
    cm::make_unique<cmGlobalGenerator>(this->CMake.get());

  cmStateSnapshot snapshot = this->CMake->GetCurrentSnapshot();
  std::string cwd = cmSystemTools::GetCurrentWorkingDirectory();
  snapshot.GetDirectory().SetCurrentSource(cwd);
  snapshot.GetDirectory().SetCurrentBinary(cwd);
  this->Makefile =
    cm::make_unique<cmMakefile>(this->GlobalGenerator.get(), snapshot);
  if (this->ParentMakefile) {
    this->Makefile->SetRecursionDepth(
      this->ParentMakefile->GetRecursionDepth());
  }

  this->CMake->SetProgressCallback(
    [this](const std::string& m, float /*unused*/) {
      if (!m.empty()) {
        cmCTestLog(this->CTest, HANDLER_OUTPUT, "-- " << m << std::endl);
      }
    });

  this->AddCTestCommand("ctest_build", cm::make_unique<cmCTestBuildCommand>());
  this->AddCTestCommand("ctest_configure",
                        cm::make_unique<cmCTestConfigureCommand>());
  this->AddCTestCommand("ctest_coverage",
                        cm::make_unique<cmCTestCoverageCommand>());
  this->AddCTestCommand("ctest_empty_binary_directory",
                        cm::make_unique<cmCTestEmptyBinaryDirectoryCommand>());
  this->AddCTestCommand("ctest_memcheck",
                        cm::make_unique<cmCTestMemCheckCommand>());
  this->AddCTestCommand("ctest_read_custom_files",
                        cm::make_unique<cmCTestReadCustomFilesCommand>());
  this->AddCTestCommand("ctest_run_script",
                        cm::make_unique<cmCTestRunScriptCommand>());
  this->AddCTestCommand("ctest_sleep", cm::make_unique<cmCTestSleepCommand>());
  this->AddCTestCommand("ctest_start", cm::make_unique<cmCTestStartCommand>());
  this->AddCTestCommand("ctest_submit",
                        cm::make_unique<cmCTestSubmitCommand>());
  this->AddCTestCommand("ctest_test", cm::make_unique<cmCTestTestCommand>());
  this->AddCTestCommand("ctest_update",
                        cm::make_unique<cmCTestUpdateCommand>());
  this->AddCTestCommand("ctest_upload",
                        cm::make_unique<cmCTestUploadCommand>());
}

// this sets up some variables for the script to use, creates the required
// cmake instance and generators, and then reads in the script
int cmCTestScriptHandler::ReadInScript(const std::string& total_script_arg)
{
  // Reset the error flag so that the script is read in no matter what
  cmSystemTools::ResetErrorOccuredFlag();

  // if the argument has a , in it then it needs to be broken into the fist
  // argument (which is the script) and the second argument which will be
  // passed into the scripts as S_ARG
  std::string script;
  std::string script_arg;
  const std::string::size_type comma_pos = total_script_arg.find(',');
  if (comma_pos != std::string::npos) {
    script = total_script_arg.substr(0, comma_pos);
    script_arg = total_script_arg.substr(comma_pos + 1);
  } else {
    script = total_script_arg;
  }
  // make sure the file exists
  if (!cmSystemTools::FileExists(script)) {
    cmSystemTools::Error("Cannot find file: " + script);
    return 1;
  }

  // read in the list file to fill the cache
  // create a cmake instance to read the configuration script
  this->CreateCMake();

  // set a variable with the path to the current script
  this->Makefile->AddDefinition("CTEST_SCRIPT_DIRECTORY",
                                cmSystemTools::GetFilenamePath(script));
  this->Makefile->AddDefinition("CTEST_SCRIPT_NAME",
                                cmSystemTools::GetFilenameName(script));
  this->Makefile->AddDefinition("CTEST_EXECUTABLE_NAME",
                                cmSystemTools::GetCTestCommand());
  this->Makefile->AddDefinition("CMAKE_EXECUTABLE_NAME",
                                cmSystemTools::GetCMakeCommand());
  this->Makefile->AddDefinitionBool("CTEST_RUN_CURRENT_SCRIPT", true);
  this->SetRunCurrentScript(true);
  this->UpdateElapsedTime();

  // set the CTEST_CONFIGURATION_TYPE variable to the current value of the
  // the -C argument on the command line.
  if (!this->CTest->GetConfigType().empty()) {
    this->Makefile->AddDefinition("CTEST_CONFIGURATION_TYPE",
                                  this->CTest->GetConfigType());
  }

  // add the script arg if defined
  if (!script_arg.empty()) {
    this->Makefile->AddDefinition("CTEST_SCRIPT_ARG", script_arg);
  }

#if defined(__CYGWIN__)
  this->Makefile->AddDefinition("CMAKE_LEGACY_CYGWIN_WIN32", "0");
#endif

  // set a callback function to update the elapsed time
  this->Makefile->OnExecuteCommand([this] { this->UpdateElapsedTime(); });

  /* Execute CTestScriptMode.cmake, which loads CMakeDetermineSystem and
  CMakeSystemSpecificInformation, so
  that variables like CMAKE_SYSTEM and also the search paths for libraries,
  header and executables are set correctly and can be used. Makes new-style
  ctest scripting easier. */
  std::string systemFile =
    this->Makefile->GetModulesFile("CTestScriptMode.cmake");
  if (!this->Makefile->ReadListFile(systemFile) ||
      cmSystemTools::GetErrorOccuredFlag()) {
    cmCTestLog(this->CTest, ERROR_MESSAGE,
               "Error in read:" << systemFile << "\n");
    return 2;
  }

  // Add definitions of variables passed in on the command line:
  const std::map<std::string, std::string>& defs =
    this->CTest->GetDefinitions();
  for (auto const& d : defs) {
    this->Makefile->AddDefinition(d.first, d.second);
  }

  // finally read in the script
  if (!this->Makefile->ReadListFile(script) ||
      cmSystemTools::GetErrorOccuredFlag()) {
    // Reset the error flag so that it can run more than
    // one script with an error when you use ctest_run_script.
    cmSystemTools::ResetErrorOccuredFlag();
    return 2;
  }

  return 0;
}

// extract variables from the script to set ivars
int cmCTestScriptHandler::ExtractVariables()
{
  // Temporary variables
  cmProp minInterval;
  cmProp contDuration;

  this->SourceDir =
    this->Makefile->GetSafeDefinition("CTEST_SOURCE_DIRECTORY");
  this->BinaryDir =
    this->Makefile->GetSafeDefinition("CTEST_BINARY_DIRECTORY");

  // add in translations for src and bin
  cmSystemTools::AddKeepPath(this->SourceDir);
  cmSystemTools::AddKeepPath(this->BinaryDir);

  this->CTestCmd = this->Makefile->GetSafeDefinition("CTEST_COMMAND");
  this->CVSCheckOut = this->Makefile->GetSafeDefinition("CTEST_CVS_CHECKOUT");
  this->CTestRoot = this->Makefile->GetSafeDefinition("CTEST_DASHBOARD_ROOT");
  this->UpdateCmd = this->Makefile->GetSafeDefinition("CTEST_UPDATE_COMMAND");
  if (this->UpdateCmd.empty()) {
    this->UpdateCmd = this->Makefile->GetSafeDefinition("CTEST_CVS_COMMAND");
  }
  this->CTestEnv = this->Makefile->GetSafeDefinition("CTEST_ENVIRONMENT");
  this->InitialCache =
    this->Makefile->GetSafeDefinition("CTEST_INITIAL_CACHE");
  this->CMakeCmd = this->Makefile->GetSafeDefinition("CTEST_CMAKE_COMMAND");
  this->CMOutFile =
    this->Makefile->GetSafeDefinition("CTEST_CMAKE_OUTPUT_FILE_NAME");

  this->Backup = this->Makefile->IsOn("CTEST_BACKUP_AND_RESTORE");
  this->EmptyBinDir =
    this->Makefile->IsOn("CTEST_START_WITH_EMPTY_BINARY_DIRECTORY");
  this->EmptyBinDirOnce =
    this->Makefile->IsOn("CTEST_START_WITH_EMPTY_BINARY_DIRECTORY_ONCE");

  minInterval =
    this->Makefile->GetDefinition("CTEST_CONTINUOUS_MINIMUM_INTERVAL");
  contDuration = this->Makefile->GetDefinition("CTEST_CONTINUOUS_DURATION");

  char updateVar[40];
  int i;
  for (i = 1; i < 10; ++i) {
    sprintf(updateVar, "CTEST_EXTRA_UPDATES_%i", i);
    cmProp updateVal = this->Makefile->GetDefinition(updateVar);
    if (updateVal) {
      if (this->UpdateCmd.empty()) {
        cmSystemTools::Error(
          std::string(updateVar) +
          " specified without specifying CTEST_CVS_COMMAND.");
        return 12;
      }
      this->ExtraUpdates.emplace_back(*updateVal);
    }
  }

  // in order to backup and restore we also must have the cvs root
  if (this->Backup && this->CVSCheckOut.empty()) {
    cmSystemTools::Error(
      "Backup was requested without specifying CTEST_CVS_CHECKOUT.");
    return 3;
  }

  // make sure the required info is here
  if (this->SourceDir.empty() || this->BinaryDir.empty() ||
      this->CTestCmd.empty()) {
    std::string msg =
      cmStrCat("CTEST_SOURCE_DIRECTORY = ",
               (!this->SourceDir.empty()) ? this->SourceDir.c_str() : "(Null)",
               "\nCTEST_BINARY_DIRECTORY = ",
               (!this->BinaryDir.empty()) ? this->BinaryDir.c_str() : "(Null)",
               "\nCTEST_COMMAND = ",
               (!this->CTestCmd.empty()) ? this->CTestCmd.c_str() : "(Null)");
    cmSystemTools::Error(
      "Some required settings in the configuration file were missing:\n" +
      msg);
    return 4;
  }

  // if the dashboard root isn't specified then we can compute it from the
  // this->SourceDir
  if (this->CTestRoot.empty()) {
    this->CTestRoot = cmSystemTools::GetFilenamePath(this->SourceDir);
  }

  // the script may override the minimum continuous interval
  if (minInterval) {
    this->MinimumInterval = 60 * atof(minInterval->c_str());
  }
  if (contDuration) {
    this->ContinuousDuration = 60.0 * atof(contDuration->c_str());
  }

  this->UpdateElapsedTime();

  return 0;
}

void cmCTestScriptHandler::SleepInSeconds(unsigned int secondsToWait)
{
#if defined(_WIN32)
  Sleep(1000 * secondsToWait);
#else
  sleep(secondsToWait);
#endif
}

// run a specific script
int cmCTestScriptHandler::RunConfigurationScript(
  const std::string& total_script_arg, bool pscope)
{
#ifndef CMAKE_BOOTSTRAP
  cmSystemTools::SaveRestoreEnvironment sre;
#endif

  int result;

  this->ScriptStartTime = std::chrono::steady_clock::now();

  // read in the script
  if (pscope) {
    cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
               "Reading Script: " << total_script_arg << std::endl);
    result = this->ReadInScript(total_script_arg);
  } else {
    cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
               "Executing Script: " << total_script_arg << std::endl);
    result = this->ExecuteScript(total_script_arg);
  }
  if (result) {
    return result;
  }

  // only run the current script if we should
  if (this->Makefile && this->Makefile->IsOn("CTEST_RUN_CURRENT_SCRIPT") &&
      this->ShouldRunCurrentScript) {
    return this->RunCurrentScript();
  }
  return result;
}

int cmCTestScriptHandler::RunCurrentScript()
{
  int result;

  // do not run twice
  this->SetRunCurrentScript(false);

  // no popup widows
  cmSystemTools::SetRunCommandHideConsole(true);

  // extract the vars from the cache and store in ivars
  result = this->ExtractVariables();
  if (result) {
    return result;
  }

  // set any environment variables
  if (!this->CTestEnv.empty()) {
    std::vector<std::string> envArgs = cmExpandedList(this->CTestEnv);
    cmSystemTools::AppendEnv(envArgs);
  }

  // now that we have done most of the error checking finally run the
  // dashboard, we may be asked to repeatedly run this dashboard, such as
  // for a continuous, do we need to run it more than once?
  if (this->ContinuousDuration >= 0) {
    this->UpdateElapsedTime();
    auto ending_time =
      std::chrono::steady_clock::now() + cmDuration(this->ContinuousDuration);
    if (this->EmptyBinDirOnce) {
      this->EmptyBinDir = true;
    }
    do {
      auto startOfInterval = std::chrono::steady_clock::now();
      result = this->RunConfigurationDashboard();
      auto interval = std::chrono::steady_clock::now() - startOfInterval;
      auto minimumInterval = cmDuration(this->MinimumInterval);
      if (interval < minimumInterval) {
        auto sleepTime =
          cmDurationTo<unsigned int>(minimumInterval - interval);
        this->SleepInSeconds(sleepTime);
      }
      if (this->EmptyBinDirOnce) {
        this->EmptyBinDir = false;
      }
    } while (std::chrono::steady_clock::now() < ending_time);
  }
  // otherwise just run it once
  else {
    result = this->RunConfigurationDashboard();
  }

  return result;
}

int cmCTestScriptHandler::CheckOutSourceDir()
{
  std::string command;
  std::string output;
  int retVal;
  bool res;

  if (!cmSystemTools::FileExists(this->SourceDir) &&
      !this->CVSCheckOut.empty()) {
    // we must now checkout the src dir
    output.clear();
    cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
               "Run cvs: " << this->CVSCheckOut << std::endl);
    res = cmSystemTools::RunSingleCommand(
      this->CVSCheckOut, &output, &output, &retVal, this->CTestRoot.c_str(),
      this->HandlerVerbose, cmDuration::zero() /*this->TimeOut*/);
    if (!res || retVal != 0) {
      cmSystemTools::Error("Unable to perform cvs checkout:\n" + output);
      return 6;
    }
  }
  return 0;
}

int cmCTestScriptHandler::BackupDirectories()
{
  int retVal;

  // compute the backup names
  this->BackupSourceDir = cmStrCat(this->SourceDir, "_CMakeBackup");
  this->BackupBinaryDir = cmStrCat(this->BinaryDir, "_CMakeBackup");

  // backup the binary and src directories if requested
  if (this->Backup) {
    // if for some reason those directories exist then first delete them
    if (cmSystemTools::FileExists(this->BackupSourceDir)) {
      cmSystemTools::RemoveADirectory(this->BackupSourceDir);
    }
    if (cmSystemTools::FileExists(this->BackupBinaryDir)) {
      cmSystemTools::RemoveADirectory(this->BackupBinaryDir);
    }

    // first rename the src and binary directories
    rename(this->SourceDir.c_str(), this->BackupSourceDir.c_str());
    rename(this->BinaryDir.c_str(), this->BackupBinaryDir.c_str());

    // we must now checkout the src dir
    retVal = this->CheckOutSourceDir();
    if (retVal) {
      this->RestoreBackupDirectories();
      return retVal;
    }
  }

  return 0;
}

int cmCTestScriptHandler::PerformExtraUpdates()
{
  std::string command;
  std::string output;
  int retVal;
  bool res;

  // do an initial cvs update as required
  command = this->UpdateCmd;
  for (std::string const& eu : this->ExtraUpdates) {
    std::vector<std::string> cvsArgs = cmExpandedList(eu);
    if (cvsArgs.size() == 2) {
      std::string fullCommand = cmStrCat(command, " update ", cvsArgs[1]);
      output.clear();
      retVal = 0;
      cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                 "Run Update: " << fullCommand << std::endl);
      res = cmSystemTools::RunSingleCommand(
        fullCommand, &output, &output, &retVal, cvsArgs[0].c_str(),
        this->HandlerVerbose, cmDuration::zero() /*this->TimeOut*/);
      if (!res || retVal != 0) {
        cmSystemTools::Error(cmStrCat("Unable to perform extra updates:\n", eu,
                                      "\nWith output:\n", output));
        return 0;
      }
    }
  }
  return 0;
}

// run a single dashboard entry
int cmCTestScriptHandler::RunConfigurationDashboard()
{
  // local variables
  std::string command;
  std::string output;
  int retVal;
  bool res;

  // make sure the src directory is there, if it isn't then we might be able
  // to check it out from cvs
  retVal = this->CheckOutSourceDir();
  if (retVal) {
    return retVal;
  }

  // backup the dirs if requested
  retVal = this->BackupDirectories();
  if (retVal) {
    return retVal;
  }

  // clear the binary directory?
  if (this->EmptyBinDir) {
    if (!cmCTestScriptHandler::EmptyBinaryDirectory(this->BinaryDir.c_str())) {
      cmCTestLog(this->CTest, ERROR_MESSAGE,
                 "Problem removing the binary directory" << std::endl);
    }
  }

  // make sure the binary directory exists if it isn't the srcdir
  if (!cmSystemTools::FileExists(this->BinaryDir) &&
      this->SourceDir != this->BinaryDir) {
    if (!cmSystemTools::MakeDirectory(this->BinaryDir)) {
      cmSystemTools::Error("Unable to create the binary directory:\n" +
                           this->BinaryDir);
      this->RestoreBackupDirectories();
      return 7;
    }
  }

  // if the binary directory and the source directory are the same,
  // and we are starting with an empty binary directory, then that means
  // we must check out the source tree
  if (this->EmptyBinDir && this->SourceDir == this->BinaryDir) {
    // make sure we have the required info
    if (this->CVSCheckOut.empty()) {
      cmSystemTools::Error(
        "You have specified the source and binary "
        "directories to be the same (an in source build). You have also "
        "specified that the binary directory is to be erased. This means "
        "that the source will have to be checked out from CVS. But you have "
        "not specified CTEST_CVS_CHECKOUT");
      return 8;
    }

    // we must now checkout the src dir
    retVal = this->CheckOutSourceDir();
    if (retVal) {
      this->RestoreBackupDirectories();
      return retVal;
    }
  }

  // backup the dirs if requested
  retVal = this->PerformExtraUpdates();
  if (retVal) {
    return retVal;
  }

  // put the initial cache into the bin dir
  if (!this->InitialCache.empty()) {
    if (!cmCTestScriptHandler::WriteInitialCache(this->BinaryDir.c_str(),
                                                 this->InitialCache.c_str())) {
      this->RestoreBackupDirectories();
      return 9;
    }
  }

  // do an initial cmake to setup the DartConfig file
  int cmakeFailed = 0;
  std::string cmakeFailedOuput;
  if (!this->CMakeCmd.empty()) {
    command = cmStrCat(this->CMakeCmd, " \"", this->SourceDir);
    output.clear();
    command += "\"";
    retVal = 0;
    cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
               "Run cmake command: " << command << std::endl);
    res = cmSystemTools::RunSingleCommand(
      command, &output, &output, &retVal, this->BinaryDir.c_str(),
      this->HandlerVerbose, cmDuration::zero() /*this->TimeOut*/);

    if (!this->CMOutFile.empty()) {
      std::string cmakeOutputFile = this->CMOutFile;
      if (!cmSystemTools::FileIsFullPath(cmakeOutputFile)) {
        cmakeOutputFile = this->BinaryDir + "/" + cmakeOutputFile;
      }

      cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                 "Write CMake output to file: " << cmakeOutputFile
                                                << std::endl);
      cmGeneratedFileStream fout(cmakeOutputFile);
      if (fout) {
        fout << output.c_str();
      } else {
        cmCTestLog(this->CTest, ERROR_MESSAGE,
                   "Cannot open CMake output file: "
                     << cmakeOutputFile << " for writing" << std::endl);
      }
    }
    if (!res || retVal != 0) {
      // even if this fails continue to the next step
      cmakeFailed = 1;
      cmakeFailedOuput = output;
    }
  }

  // run ctest, it may be more than one command in here
  std::vector<std::string> ctestCommands = cmExpandedList(this->CTestCmd);
  // for each variable/argument do a putenv
  for (std::string const& ctestCommand : ctestCommands) {
    command = ctestCommand;
    output.clear();
    retVal = 0;
    cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
               "Run ctest command: " << command << std::endl);
    res = cmSystemTools::RunSingleCommand(
      command, &output, &output, &retVal, this->BinaryDir.c_str(),
      this->HandlerVerbose, cmDuration::zero() /*this->TimeOut*/);

    // did something critical fail in ctest
    if (!res || cmakeFailed || retVal & cmCTest::BUILD_ERRORS) {
      this->RestoreBackupDirectories();
      if (cmakeFailed) {
        cmCTestLog(this->CTest, ERROR_MESSAGE,
                   "Unable to run cmake:" << std::endl
                                          << cmakeFailedOuput << std::endl);
        return 10;
      }
      cmCTestLog(this->CTest, ERROR_MESSAGE,
                 "Unable to run ctest:" << std::endl
                                        << "command: " << command << std::endl
                                        << "output: " << output << std::endl);
      if (!res) {
        return 11;
      }
      return retVal * 100;
    }
  }

  // if all was successful, delete the backup dirs to free up disk space
  if (this->Backup) {
    cmSystemTools::RemoveADirectory(this->BackupSourceDir);
    cmSystemTools::RemoveADirectory(this->BackupBinaryDir);
  }

  return 0;
}

bool cmCTestScriptHandler::WriteInitialCache(const char* directory,
                                             const char* text)
{
  std::string cacheFile = cmStrCat(directory, "/CMakeCache.txt");
  cmGeneratedFileStream fout(cacheFile);
  if (!fout) {
    return false;
  }

  if (text != nullptr) {
    fout.write(text, strlen(text));
  }

  // Make sure the operating system has finished writing the file
  // before closing it.  This will ensure the file is finished before
  // the check below.
  fout.flush();
  fout.close();
  return true;
}

void cmCTestScriptHandler::RestoreBackupDirectories()
{
  // if we backed up the dirs and the build failed, then restore
  // the backed up dirs
  if (this->Backup) {
    // if for some reason those directories exist then first delete them
    if (cmSystemTools::FileExists(this->SourceDir)) {
      cmSystemTools::RemoveADirectory(this->SourceDir);
    }
    if (cmSystemTools::FileExists(this->BinaryDir)) {
      cmSystemTools::RemoveADirectory(this->BinaryDir);
    }
    // rename the src and binary directories
    rename(this->BackupSourceDir.c_str(), this->SourceDir.c_str());
    rename(this->BackupBinaryDir.c_str(), this->BinaryDir.c_str());
  }
}

bool cmCTestScriptHandler::RunScript(cmCTest* ctest, cmMakefile* mf,
                                     const char* sname, bool InProcess,
                                     int* returnValue)
{
  auto sh = cm::make_unique<cmCTestScriptHandler>();
  sh->SetCTestInstance(ctest);
  sh->ParentMakefile = mf;
  sh->AddConfigurationScript(sname, InProcess);
  int res = sh->ProcessHandler();
  if (returnValue) {
    *returnValue = res;
  }
  return true;
}

bool cmCTestScriptHandler::EmptyBinaryDirectory(const char* sname)
{
  // try to avoid deleting root
  if (!sname || strlen(sname) < 2) {
    return false;
  }

  // consider non existing target directory a success
  if (!cmSystemTools::FileExists(sname)) {
    return true;
  }

  // try to avoid deleting directories that we shouldn't
  std::string check = cmStrCat(sname, "/CMakeCache.txt");

  if (!cmSystemTools::FileExists(check)) {
    return false;
  }

  for (int i = 0; i < 5; ++i) {
    if (TryToRemoveBinaryDirectoryOnce(sname)) {
      return true;
    }
    cmSystemTools::Delay(100);
  }

  return false;
}

bool cmCTestScriptHandler::TryToRemoveBinaryDirectoryOnce(
  const std::string& directoryPath)
{
  cmsys::Directory directory;
  directory.Load(directoryPath);

  for (unsigned long i = 0; i < directory.GetNumberOfFiles(); ++i) {
    std::string path = directory.GetFile(i);

    if (path == "." || path == ".." || path == "CMakeCache.txt") {
      continue;
    }

    std::string fullPath = cmStrCat(directoryPath, "/", path);

    bool isDirectory = cmSystemTools::FileIsDirectory(fullPath) &&
      !cmSystemTools::FileIsSymlink(fullPath);

    if (isDirectory) {
      if (!cmSystemTools::RemoveADirectory(fullPath)) {
        return false;
      }
    } else {
      if (!cmSystemTools::RemoveFile(fullPath)) {
        return false;
      }
    }
  }

  return cmSystemTools::RemoveADirectory(directoryPath);
}

cmDuration cmCTestScriptHandler::GetRemainingTimeAllowed()
{
  if (!this->Makefile) {
    return cmCTest::MaxDuration();
  }

  cmProp timelimitS = this->Makefile->GetDefinition("CTEST_TIME_LIMIT");

  if (!timelimitS) {
    return cmCTest::MaxDuration();
  }

  auto timelimit = cmDuration(atof(timelimitS->c_str()));

  auto duration = std::chrono::duration_cast<cmDuration>(
    std::chrono::steady_clock::now() - this->ScriptStartTime);
  return (timelimit - duration);
}

void cmCTestScriptHandler::SetRunCurrentScript(bool value)
{
  this->ShouldRunCurrentScript = value;
}