Enable C++20 and use cmake 4

CMakeLists.txt

@@ -2,7 +2,7 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
-cmake_minimum_required(VERSION 3.21)
+cmake_minimum_required(VERSION 4.0)
 project(Katja)
 
 include(CTest)
@@ -10,7 +10,8 @@ include(FetchContent)
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS 1)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_MODULE_STD 1)
 
 add_library(katja
        katja/database.cpp include/katja/database.hpp

README.md

@@ -11,7 +11,7 @@ implementation, that exposes the library to a user.
 ## Build instructions
 
 ```sh
-cmake -B build
+cmake -B build -G Ninja
 make -C build
 ```
 

cli/CMakeLists.txt

@@ -4,7 +4,7 @@
 
 FetchContent_Declare(ftxui
 	GIT_REPOSITORY https://github.com/ArthurSonzogni/ftxui
-	GIT_TAG v6.1.8
+	GIT_TAG v6.1.9
 	GIT_PROGRESS TRUE
 	GIT_SHALLOW TRUE
 	EXCLUDE_FROM_ALL
@@ -18,7 +18,8 @@ FetchContent_Declare(toml11
 )
 FetchContent_MakeAvailable(toml11)
 
-add_executable(katja-cli main.cpp component.hpp component.cpp page.hpp page.cpp)
+add_executable(katja-cli main.cpp component.hpp component.cpp)
+target_sources(katja-cli PUBLIC FILE_SET all_my_modules TYPE CXX_MODULES FILES page.cpp)
 target_include_directories(katja-cli PRIVATE ${Boost_INCLUDE_DIR})
 target_link_libraries(katja-cli
 	LINK_PUBLIC katja

cli/main.cpp

@@ -7,11 +7,13 @@
 
 #include <ftxui/component/screen_interactive.hpp>
 #include <ftxui/dom/elements.hpp>
+#include <ftxui/component/component.hpp>
 #include <toml.hpp>
 
 #include "katja/sbo.hpp"
 #include "katja/database.hpp"
-#include "page.hpp"
+
+import page;
 
 int main(int argc, const char **argv)
 {

cli/page.cpp

@@ -3,13 +3,36 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/.
  */
-#include "page.hpp"
+module;
 
 #include <algorithm>
 
-namespace katja
+#include "component.hpp"
+
+export module page;
+
+export namespace katja
 {
-    ScreenContainer::ScreenContainer(std::vector<std::pair<std::string, Page>> pages, std::function<void()> on_enter)
+    class PageBase : public ftxui::ComponentBase
+    {
+    public:
+        virtual void Load() = 0;
+    };
+
+    using Page = std::shared_ptr<PageBase>;
+    using Pages = std::vector<Page>;
+
+    class ScreenContainer final : public ftxui::ComponentBase
+    {
+        int menu_selected{ 0 };
+        ftxui::Component menu;
+        ftxui::Component content;
+        std::vector<std::string> menu_entries;
+        Pages menu_pages;
+        std::function<void()> on_enter;
+
+    public:
+        ScreenContainer(std::vector<std::pair<std::string, Page>> pages, std::function<void()> on_enter)
             : on_enter(on_enter)
         {
             ftxui::Components menu_pages;
@@ -26,7 +49,7 @@ namespace katja
             this->content = ftxui::Container::Tab(std::move(menu_pages), &this->menu_selected);
         }
 
-    ftxui::Element ScreenContainer::OnRender()
+        ftxui::Element OnRender() override
         {
             return ftxui::vbox({
                 this->menu->Render(),
@@ -35,7 +58,7 @@ namespace katja
             });
         }
 
-    bool ScreenContainer::OnEvent(ftxui::Event event)
+        bool OnEvent(ftxui::Event event) override
         {
             if (event == ftxui::Event::CtrlQ && this->on_enter)
             {
@@ -63,37 +86,61 @@ namespace katja
             }
             return result;
         }
+    };
 
     ftxui::Component Screen(std::vector<std::pair<std::string, Page>> pages, std::function<void()> on_enter)
     {
         return std::make_shared<ScreenContainer>(std::move(pages), on_enter);
     }
 
-    ftxui::Element WelcomePage::OnRender()
+    class WelcomePage final : public PageBase
+    {
+    public:
+        void Load() override
+        {
+        }
+
+        ftxui::Element OnRender() override
         {
             return ftxui::paragraph("Select an action in the menu.");
         }
+    };
 
-    void WelcomePage::Load()
+    class UpdatesPage final : public PageBase
     {
-    }
+        ftxui::Component updatable = PackageList("Updates");
+        std::shared_ptr<struct repository> repository;
+        package_database database;
 
-    UpdatesPage::UpdatesPage(std::shared_ptr<struct repository> repository, package_database database)
+    public:
+        UpdatesPage(std::shared_ptr<struct repository> repository, package_database database)
             : repository(repository), database(database)
         {
         }
 
-    void UpdatesPage::Load()
+        void Load() override
         {
             this->updatable = PackageList("Updates", repository->get_updates(this->database));
         }
 
-    ftxui::Element UpdatesPage::OnRender()
+        ftxui::Element OnRender() override
         {
             return this->updatable->Render();
         }
+    };
 
-    SearchPage::SearchPage(std::shared_ptr<struct repository> repository, const std::string& architecture)
+    class SearchPage final : public PageBase
+    {
+        std::string needle;
+        ftxui::Component search_input;
+        ftxui::Component type_input;
+        std::shared_ptr<struct repository> repository;
+        std::string architecture;
+        ftxui::Component search_results = PackageList("Results");
+        int search_type{ 0 };
+
+    public:
+        SearchPage(std::shared_ptr<struct repository> repository, const std::string& architecture)
             : repository(repository), architecture(architecture)
         {
             ftxui::InputOption search_input_option = { .multiline = false };
@@ -101,12 +148,12 @@ namespace katja
             this->type_input = ftxui::Radiobox(std::vector<std::string>{ "Names", "Description" }, &this->search_type);
         }
 
-    void SearchPage::Load()
+        void Load() override
         {
             this->needle.erase();
         }
 
-    ftxui::Element SearchPage::OnRender()
+        ftxui::Element OnRender() override
         {
             std::vector<ftxui::Element> lines;
 
@@ -126,7 +173,7 @@ namespace katja
             });
         }
 
-    bool SearchPage::OnEvent(ftxui::Event event)
+        bool OnEvent(ftxui::Event event) override
         {
             if (event == ftxui::Event::Return)
             {
@@ -149,4 +196,5 @@ namespace katja
             }
             return false;
         }
+    };
 }

cli/page.hpp

@@ -1,83 +0,0 @@
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at https://mozilla.org/MPL/2.0/.
- */
-#pragma once
-
-#include <ftxui/component/event.hpp>
-#include <ftxui/component/component_base.hpp>
-#include <ftxui/component/component.hpp>
-
-#include "katja/repository.hpp"
-#include "katja/database.hpp"
-
-#include "component.hpp"
-
-namespace katja
-{
-    class PageBase : public ftxui::ComponentBase
-    {
-    public:
-        virtual void Load() = 0;
-    };
-
-    using Page = std::shared_ptr<PageBase>;
-    using Pages = std::vector<Page>;
-
-    class ScreenContainer final : public ftxui::ComponentBase
-    {
-        int menu_selected{ 0 };
-        ftxui::Component menu;
-        ftxui::Component content;
-        std::vector<std::string> menu_entries;
-        Pages menu_pages;
-        std::function<void()> on_enter;
-
-    public:
-        ScreenContainer(std::vector<std::pair<std::string, Page>> pages, std::function<void()> on_enter);
-
-        ftxui::Element OnRender() override;
-        bool OnEvent(ftxui::Event event) override;
-    };
-
-    ftxui::Component Screen(std::vector<std::pair<std::string, Page>> pages, std::function<void()> on_enter);
-
-    class WelcomePage final : public PageBase
-    {
-    public:
-        void Load() override;
-        ftxui::Element OnRender() override;
-    };
-
-    class UpdatesPage final : public PageBase
-    {
-        ftxui::Component updatable = PackageList("Updates");
-        std::shared_ptr<struct repository> repository;
-        package_database database;
-
-    public:
-        UpdatesPage(std::shared_ptr<struct repository> repository, package_database database);
-
-        void Load() override;
-        ftxui::Element OnRender() override;
-    };
-
-    class SearchPage final : public PageBase
-    {
-        std::string needle;
-        ftxui::Component search_input;
-        ftxui::Component type_input;
-        std::shared_ptr<struct repository> repository;
-        std::string architecture;
-        ftxui::Component search_results = PackageList("Results");
-        int search_type{ 0 };
-
-    public:
-        SearchPage(std::shared_ptr<struct repository> repository, const std::string& architecture);
-
-        void Load() override;
-        ftxui::Element OnRender() override;
-        bool OnEvent(ftxui::Event event) override;
-    };
-}

katja/sbo.cpp

@@ -126,7 +126,7 @@ namespace katja
         std::ifstream info_stream{ info_filepath };
         std::string info_line, info_variable, info_value;
         std::string program_name, version, homepage, email, maintainer;
-        std::vector<std::string> download, md5sum, download_x86_64, md5sum_x86_64, requires;
+        std::vector<std::string> download, md5sum, download_x86_64, md5sum_x86_64, requirements;
         bool continuation{ false };
 
         while (std::getline(info_stream, info_line))
@@ -193,7 +193,7 @@ namespace katja
                 }
                 else if (info_variable == "REQUIRES")
                 {
-                    boost::split(requires, info_value, boost::is_any_of(" "), boost::token_compress_on);
+                    boost::split(requirements, info_value, boost::is_any_of(" "), boost::token_compress_on);
                 }
            }
         }