Source sweep: Use cmStrCat for string concatenation

This patch is generated by a python script that uses regular expressions to
search for string concatenation patterns of the kind

```
std::string str = <ARG0>;
str += <ARG1>;
str += <ARG2>;
...
```

and replaces them with a single `cmStrCat` call

```
std::string str = cmStrCat(<ARG0>, <ARG1>, <ARG2>, ...);
```

If any `<ARGX>` is itself a concatenated string of the kind

```
a + b + c + ...;
```

then `<ARGX>` is split into multiple arguments for the `cmStrCat` call.

If there's a sequence of literals in the `<ARGX>`, then all literals in the
sequence are concatenated and merged into a single literal argument for
the `cmStrCat` call.

Single character strings are converted to single char arguments for
the `cmStrCat` call.

`std::to_string(...)` wrappings are removed from `cmStrCat` arguments,
because it supports numeric types as well as string types.

`arg.substr(x)` arguments to `cmStrCat` are replaced with
`cm::string_view(arg).substr(x)`

1 files changed, 4 insertions, 4 deletions

diff --git a/Source/QtDialog/FirstConfigure.cxx b/Source/QtDialog/FirstConfigure.cxx
index 364a378..d9a8aff 100644
--- a/Source/QtDialog/FirstConfigure.cxx
+++ b/Source/QtDialog/FirstConfigure.cxx
@@ -2,6 +2,7 @@
 #include "FirstConfigure.h"
 
 #include "Compilers.h"
+#include "cmStringAlgorithms.h"
 
 #include <QComboBox>
 #include <QRadioButton>
@@ -183,10 +184,9 @@ void StartCompilerSetup::onGeneratorChanged(QString const& name)
   if (GeneratorsSupportingPlatform.contains(name)) {
 
     // Change the label title to include the default platform
-    std::string label = "Optional platform for generator";
-    label += "(if empty, generator uses: ";
-    label += this->GeneratorDefaultPlatform[name].toStdString();
-    label += ")";
+    std::string label =
+      cmStrCat("Optional platform for generator(if empty, generator uses: ",
+               this->GeneratorDefaultPlatform[name].toStdString(), ')');
     this->PlatformLabel->setText(tr(label.c_str()));
 
     // Regenerate the list of supported platform