Add statustime.

.gitignore

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+/build/

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.20...3.20)
+
+# Global build options.
+set(CMAKE_BUILD_TYPE "Release" CACHE STRING "The type of build.")
+
+project(cppscripts
+  DESCRIPTION "Various single file scripts."
+  LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+find_package(fmt 7 REQUIRED CONFIG)
+# find_package(termcolor CONFIG)
+# find_package(Threads REQUIRED)
+
+add_executable(statustime "statustime.cpp")
+target_link_libraries(statustime PUBLIC fmt::fmt)

CMakePresets.json

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+{
+    "version": 2,
+    "cmakeMinimumRequired": {
+        "major": 3,
+        "minor": 20,
+        "patch": 0
+    },
+    "configurePresets": [
+        {
+            "name": "common",
+            "hidden": true,
+            "binaryDir": "build",
+            "cacheVariables": {
+                "CMAKE_EXPORT_COMPILE_COMMANDS": true
+            }
+        },
+        {
+            "name": "release",
+            "displayName": "Release config",
+            "description": "Build without debug symbols or tests",
+            "inherits": "common",
+            "cacheVariables": {
+                "CMAKE_BUILD_TYPE": "Release"
+            }
+        }
+    ],
+    "buildPresets": [
+    {
+        "name": "parallel",
+        "configurePreset": "release",
+        "jobs": 3
+    }
+    ]
+}

statustime.cpp

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+// Print date and time for i3 status bar.
+
+#include <fmt/chrono.h>
+#include <fmt/core.h>
+
+#include <chrono>
+#include <exception>
+#include <iostream>
+#include <locale>
+#include <thread>
+
+int main()
+{
+    using fmt::format;
+    using std::cout;
+    using namespace std::chrono_literals;
+
+    // Set explicitly, because LC_TIME is en_DK.UTF-8.
+    std::locale::global(std::locale("de_DE.UTF-8"));
+
+    try
+    {
+        while (true)
+        {
+            cout << format(R"(<b><span color="orange">{0:%A}</span></b>, )"
+                           R"({0:%Y-%m-%d} )"
+                           R"(<span color="lightcyan">{0:%H:%M}</span>)",
+                           std::chrono::system_clock::now())
+                 << std::endl; // NOTE: Don't forget that we need to flush! 😊
+            std::this_thread::sleep_for(1s);
+        }
+    }
+    catch (const std::exception &)
+    {
+        cout << "\n<span color='red'>Error: Time script crashed.</span>\n";
+        return 33;
+    }
+}