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User forums => Help => Topic started by: rechtsanwaltsteyer on November 03, 2025, 11:07:18 am

Title: Different handling of placeholders
Post by: rechtsanwaltsteyer on November 03, 2025, 11:07:18 am

Hello everyone,
her my until now unresponded question again:
Since version 20.03 and also in the current version 25.03, I have an unsolvable problem:
1. If I enter a placeholder under Settings/Editor/Code Specification, such as "$(NOW_L)", the current date and time is displayed in the subsequently generated single file (*.cpp/*.h).
2. However, if I enter the same placeholders in /usr/share/codeblocks/templates/wizard/console/cpp/main.cpp, when generating a new project, "$(NOW_L)" is displayed in main.cpp instead of the current date and time.
My question: Why this different treatment of "$(NOW_L)?"
Thank you in advance!
Michael

Title: Re: Different handling of placeholders
Post by: blauzahn on November 03, 2025, 07:55:50 pm

Maybe because macro expansion is better used reluctantly? Like minimizing the usage of the c-preprocessor.  Currently, I do not use default-code but I would be fine with how it is as you described.

I briefly searched cb-source for default-code. The function that expands placeholders is in trunk/src/sdk/editormanager.cpp:495

Code

cbEditor* EditorManager::New(const wxString& newFileName)
{
//    wxString old_title = Manager::Get()->GetAppWindow()->GetTitle(); // Fix for Bug #1389450
    // create a dummy file
    if (!newFileName.IsEmpty() && !wxFileExists(newFileName) && wxDirExists(wxPathOnly(newFileName)))
    {
        wxFile f(newFileName, wxFile::write);
        if (!f.IsOpened())
            return nullptr;
    }
    cbEditor* ed = new cbEditor(m_pNotebook, newFileName, m_Theme);
//    if ((newFileName.IsEmpty() && !ed->SaveAs()) || !ed->Save())
//    {
//        //DeletePage(ed->GetPageIndex());
//        ed->Destroy();
//        Manager::Get()->GetAppWindow()->SetTitle(old_title); // Though I can't reproduce the bug, this does no harm
//        return 0;
//    }

    // add default text
    wxString key;
    key.Printf(_T("/default_code/set%d"), (int)FileTypeOf(ed->GetFilename()));
    wxString code = Manager::Get()->GetConfigManager(_T("editor"))->Read(key, wxEmptyString);
    // Allow usage of macros
    // TODO (Morten#5#): Is it worth making this configurable?!
    Manager::Get()->GetMacrosManager()->ReplaceMacros(code);
    ed->GetControl()->SetText(code);

    ed->SetColourSet(m_Theme);
    AddEditorBase(ed);

    ed->Show(true);
    SetActiveEditor(ed);

    CodeBlocksEvent evt(cbEVT_EDITOR_OPEN, -1, nullptr, ed);
    Manager::Get()->GetPluginManager()->NotifyPlugins(evt);

    return ed;
}

see the lines:

Code

    // Allow usage of macros
    // TODO (Morten#5#): Is it worth making this configurable?!
    Manager::Get()->GetMacrosManager()->ReplaceMacros(code);

Apart from that snippet, at first glance, I did not find in the source code any further rationale for the decision you asked for.

The code entered into the settings dialog can be found in ~/.config/codeblocks/default.con. Please search for default_code within that file.

Why do you want the creation date of a source file in the first place? I'd rather look up in version control when it was added. With that username, do you do that for legal reasons?