kconfig_compiler: new kcfgc args HeaderExtension & SourceExtension

Summary:
When using kconfig_compiler generated sources in projects where the used
file extensions for C++ files are not ".h" and/or ".cpp", the include for
the generated header looks a bit alien to the project, as well as the
generated source file if one looks closer at it.

This code adds new optional flags HeaderExtension & SourceExtension which
can be used to control the file extensions used for the generated files.

Test Plan:
All unit tests and the new test_fileextensions pass, existing projects using
kcfg without & with the new flags build fine.

Reviewers: #frameworks, apol

Reviewed By: apol

Subscribers: apol, kde-frameworks-devel

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D19565

3 files changed, 24 insertions, 6 deletions

diff --git a/src/kconfig_compiler/README.dox b/src/kconfig_compiler/README.dox
index 3ba97285..64f7c44a 100644
--- a/src/kconfig_compiler/README.dox
+++ b/src/kconfig_compiler/README.dox
@@ -97,6 +97,18 @@ The following options are read from the kcfgc file:
   <td>Name of kcfg file containing the options the class is generated for</td>
 </tr>
 <tr>
+  <td><b>HeaderExtension</b></td>
+  <td>string</td>
+  <td>h</td>
+  <td>Extension to use for the name of the generated C++ header files. Since KF 5.57</td>
+</tr>
+<tr>
+  <td><b>SourceExtension</b></td>
+  <td>string</td>
+  <td>cpp</td>
+  <td>Extension to use for the name of the generated C++ source file. Since KF 5.57</td>
+</tr>
+<tr>
   <td><b>NameSpace</b></td>
   <td>string</td>
   <td>-</td>
diff --git a/src/kconfig_compiler/checkkcfg.pl b/src/kconfig_compiler/checkkcfg.pl
index 9ebcbf83..03d187c9 100755
--- a/src/kconfig_compiler/checkkcfg.pl
+++ b/src/kconfig_compiler/checkkcfg.pl
@@ -1,6 +1,6 @@
 #!/usr/bin/perl
 
-if ( @ARGV != 1 ) {
+if ( @ARGV < 1 ) {
   print STDERR "Missing arg: filename\n";
   exit 1;
 }
@@ -10,8 +10,10 @@ $file = $ARGV[0];
 $file =~ /^(.*)\.[^\.]*$/;
 $filebase = $1;
 
-$file_h = "$filebase.h";
-$file_cpp = "$filebase.cpp";
+$header_extension = @ARGV > 1 ? $ARGV[1] : "h";
+$source_extension = @ARGV > 2 ? $ARGV[2] : "cpp";
+$file_h = "$filebase.$header_extension";
+$file_cpp = "$filebase.$source_extension";
 
 $kcfgc = $file . "c";
 
diff --git a/src/kconfig_compiler/kconfig_compiler.cpp b/src/kconfig_compiler/kconfig_compiler.cpp
index da75ad94..b467a20a 100644
--- a/src/kconfig_compiler/kconfig_compiler.cpp
+++ b/src/kconfig_compiler/kconfig_compiler.cpp
@@ -108,6 +108,8 @@ public:
             translationSystem = QtTranslation;
         }
         qCategoryLoggingName = codegenConfig.value(QStringLiteral("CategoryLoggingName"), QString()).toString();
+        headerExtension = codegenConfig.value(QStringLiteral("HeaderExtension"), QStringLiteral("h")).toString();
+        sourceExtension = codegenConfig.value(QStringLiteral("SourceExtension"), QStringLiteral("cpp")).toString();
     }
 
 public:
@@ -131,6 +133,8 @@ public:
     QStringList mutators;
     QStringList defaultGetters;
     QString qCategoryLoggingName;
+    QString headerExtension;
+    QString sourceExtension;
     bool allMutators;
     bool setUserTexts;
     bool allDefaultGetters;
@@ -1742,8 +1746,8 @@ int main(int argc, char **argv)
     }
 #endif
 
-    QString headerFileName = baseName + ".h";
-    QString implementationFileName = baseName + ".cpp";
+    QString headerFileName = baseName + '.' + cfg.headerExtension;
+    QString implementationFileName = baseName + '.' + cfg.sourceExtension;
     QString mocFileName = baseName + ".moc";
     QString cppPreamble; // code to be inserted at the beginnin of the cpp file, e.g. initialization of static values
 
@@ -2199,7 +2203,7 @@ int main(int argc, char **argv)
 
     if (cfg.customAddons) {
         h << "    // Include custom additions" << endl;
-        h << "    #include \"" << filenameOnly(baseName) << "_addons.h\"" << endl;
+        h << "    #include \"" << filenameOnly(baseName) << "_addons." << cfg.headerExtension << '"' << endl;
     }
 
     h << "};" << endl << endl;