cmState::GetCacheEntryProperty: return cmProp

Source/CursesDialog/cmCursesCacheEntryComposite.cxx

@@ -71,11 +71,11 @@ cmCursesCacheEntryComposite::cmCursesCacheEntryComposite(
       break;
     }
     case cmStateEnums::STRING: {
-      const char* stringsProp = state->GetCacheEntryProperty(key, "STRINGS");
+      cmProp stringsProp = state->GetCacheEntryProperty(key, "STRINGS");
       if (stringsProp) {
         auto ow =
           cm::make_unique<cmCursesOptionsWidget>(this->EntryWidth, 1, 1, 1);
-        for (std::string const& opt : cmExpandedList(stringsProp)) {
+        for (std::string const& opt : cmExpandedList(*stringsProp)) {
           ow->AddOption(opt);
         }
         ow->SetOption(*value);

Source/CursesDialog/cmCursesMainForm.cxx

@@ -407,9 +407,10 @@ void cmCursesMainForm::UpdateStatusBar(cm::optional<std::string> message)
     auto cmakeState = this->CMakeInstance->GetState();
     cmProp existingValue = cmakeState->GetCacheEntryValue(labelValue);
     if (existingValue) {
-      auto help = cmakeState->GetCacheEntryProperty(labelValue, "HELPSTRING");
+      cmProp help =
+        cmakeState->GetCacheEntryProperty(labelValue, "HELPSTRING");
       if (help) {
-        bar += help;
+        bar += *help;
       }
     }
   }
@@ -802,7 +803,7 @@ void cmCursesMainForm::HandleInput()
         cmCursesWidget* lbl = reinterpret_cast<cmCursesWidget*>(
           field_userptr(this->Fields[findex - 2]));
         const char* curField = lbl->GetValue();
-        const char* helpString = nullptr;
+        cmProp helpString = nullptr;
 
         cmProp existingValue =
           this->CMakeInstance->GetState()->GetCacheEntryValue(curField);
@@ -813,7 +814,7 @@ void cmCursesMainForm::HandleInput()
         if (helpString) {
           this->HelpMessage[1] =
             cmStrCat("Current option is: ", curField, '\n',
-                     "Help string for this option is: ", helpString, '\n');
+                     "Help string for this option is: ", *helpString, '\n');
         } else {
           this->HelpMessage[1] = "";
         }

Source/QtDialog/QCMake.cxx

@@ -306,8 +306,9 @@ QCMakePropertyList QCMake::properties() const
 
     QCMakeProperty prop;
     prop.Key = QString::fromLocal8Bit(key.c_str());
-    prop.Help =
-      QString::fromLocal8Bit(state->GetCacheEntryProperty(key, "HELPSTRING"));
+    if (cmProp hs = state->GetCacheEntryProperty(key, "HELPSTRING")) {
+      prop.Help = QString::fromLocal8Bit(hs->c_str());
+    }
     prop.Value = QString::fromLocal8Bit(cachedValue->c_str());
     prop.Advanced = state->GetCacheEntryPropertyAsBool(key, "ADVANCED");
     if (t == cmStateEnums::BOOL) {
@@ -319,10 +320,10 @@ QCMakePropertyList QCMake::properties() const
       prop.Type = QCMakeProperty::FILEPATH;
     } else if (t == cmStateEnums::STRING) {
       prop.Type = QCMakeProperty::STRING;
-      const char* stringsProperty =
-        state->GetCacheEntryProperty(key, "STRINGS");
+      cmProp stringsProperty = state->GetCacheEntryProperty(key, "STRINGS");
       if (stringsProperty) {
-        prop.Strings = QString::fromLocal8Bit(stringsProperty).split(";");
+        prop.Strings =
+          QString::fromLocal8Bit(stringsProperty->c_str()).split(";");
       }
     }
 

Source/cmFileAPICache.cxx

@@ -94,7 +94,8 @@ Json::Value Cache::DumpEntryProperty(std::string const& name,
 {
   Json::Value property = Json::objectValue;
   property["name"] = prop;
-  property["value"] = this->State->GetCacheEntryProperty(name, prop);
+  cmProp p = this->State->GetCacheEntryProperty(name, prop);
+  property["value"] = p ? *p : "";
   return property;
 }
 }

Source/cmFindBase.cxx

@@ -312,9 +312,9 @@ bool cmFindBase::CheckForVariableInCache()
       return true;
     }
     if (cached) {
-      const char* hs =
+      cmProp hs =
         state->GetCacheEntryProperty(this->VariableName, "HELPSTRING");
-      this->VariableDocumentation = hs ? hs : "(none)";
+      this->VariableDocumentation = hs ? *hs : "(none)";
     }
   }
   return false;

Source/cmGetPropertyCommand.cxx

@@ -393,12 +393,13 @@ bool HandleCacheMode(cmExecutionStatus& status, const std::string& name,
     return false;
   }
 
-  const char* value = nullptr;
+  cmProp value = nullptr;
   if (status.GetMakefile().GetState()->GetCacheEntryValue(name)) {
     value = status.GetMakefile().GetState()->GetCacheEntryProperty(
       name, propertyName);
   }
-  StoreResult(infoType, status.GetMakefile(), variable, value);
+  StoreResult(infoType, status.GetMakefile(), variable,
+              value ? value->c_str() : nullptr);
   return true;
 }
 

Source/cmServerProtocol.cxx

@@ -450,7 +450,7 @@ cmServerResponse cmServerProtocol1::ProcessCache(
     bool haveProperties = false;
     for (auto const& prop : state->GetCacheEntryPropertyList(key)) {
       haveProperties = true;
-      props[prop] = state->GetCacheEntryProperty(key, prop);
+      props[prop] = *state->GetCacheEntryProperty(key, prop);
     }
     if (haveProperties) {
       entry[kPROPERTIES_KEY] = props;

Source/cmState.cxx

@@ -206,15 +206,14 @@ std::vector<std::string> cmState::GetCacheEntryPropertyList(
   return it.GetPropertyList();
 }
 
-const char* cmState::GetCacheEntryProperty(std::string const& key,
-                                           std::string const& propertyName)
+cmProp cmState::GetCacheEntryProperty(std::string const& key,
+                                      std::string const& propertyName)
 {
   cmCacheManager::CacheIterator it = this->CacheManager->GetCacheIterator(key);
   if (!it.PropertyExists(propertyName)) {
     return nullptr;
   }
-  cmProp retVal = it.GetProperty(propertyName);
-  return retVal ? retVal->c_str() : nullptr;
+  return it.GetProperty(propertyName);
 }
 
 bool cmState::GetCacheEntryPropertyAsBool(std::string const& key,

Source/cmState.h

@@ -105,8 +105,8 @@ public:
   void SetCacheEntryBoolProperty(std::string const& key,
                                  std::string const& propertyName, bool value);
   std::vector<std::string> GetCacheEntryPropertyList(std::string const& key);
-  const char* GetCacheEntryProperty(std::string const& key,
-                                    std::string const& propertyName);
+  cmProp GetCacheEntryProperty(std::string const& key,
+                               std::string const& propertyName);
   bool GetCacheEntryPropertyAsBool(std::string const& key,
                                    std::string const& propertyName);
   void AppendCacheEntryProperty(std::string const& key,

Source/cmake.cxx

@@ -1409,9 +1409,9 @@ int cmake::HandleDeleteCacheVariables(const std::string& var)
     cmProp existingValue = this->State->GetCacheEntryValue(save.key);
     if (existingValue) {
       save.type = this->State->GetCacheEntryType(save.key);
-      if (const char* help =
+      if (cmProp help =
             this->State->GetCacheEntryProperty(save.key, "HELPSTRING")) {
-        save.help = help;
+        save.help = *help;
       }
     }
     saved.push_back(std::move(save));

Source/cmakemain.cxx

@@ -292,13 +292,13 @@ int do_cmake(int ac, char const* const* av)
       cmStateEnums::CacheEntryType t = cm.GetState()->GetCacheEntryType(k);
       if (t != cmStateEnums::INTERNAL && t != cmStateEnums::STATIC &&
           t != cmStateEnums::UNINITIALIZED) {
-        const char* advancedProp =
+        cmProp advancedProp =
           cm.GetState()->GetCacheEntryProperty(k, "ADVANCED");
         if (list_all_cached || !advancedProp) {
           if (list_help) {
-            std::cout << "// "
-                      << cm.GetState()->GetCacheEntryProperty(k, "HELPSTRING")
-                      << std::endl;
+            cmProp help =
+              cm.GetState()->GetCacheEntryProperty(k, "HELPSTRING");
+            std::cout << "// " << (help ? *help : "") << std::endl;
           }
           std::cout << k << ":" << cmState::CacheEntryTypeToString(t) << "="
                     << cm.GetState()->GetSafeCacheEntryValue(k) << std::endl;