initial commit

src/date_format.cpp

@@ -0,0 +1,37 @@
+#include "date_format.h"
+
+#include <ctime>
+
+namespace radiantwave::datetime {
+
+std::vector<DateFormatOption> getDateFormatOptions() {
+    return {
+        {"Month/Day/Year", "%m/%d/%Y"},
+        {"Day/Month/Year", "%d/%m/%Y"},
+        {"Year-Month-Day", "%Y-%m-%d"},
+        {"Month.Day.Year", "%m.%d.%Y"},
+        {"Day.Month.Year", "%d.%m.%Y"},
+        {"Month Day, Year", "%B %d, %Y"},
+        {"Day Month Year", "%d %B %Y"},
+    };
+}
+
+std::string formatDate(std::time_t t, const std::string& pattern) {
+    std::tm local{};
+    if (!localtime_r(&t, &local)) {
+        return "";
+    }
+
+    char buffer[128];
+    size_t written = strftime(buffer, sizeof(buffer), pattern.c_str(), &local);
+    if (written == 0) {
+        return "";
+    }
+    return std::string(buffer, written);
+}
+
+std::string formatTime(std::time_t t) {
+    return formatDate(t, "%H:%M:%S");
+}
+
+} // namespace radiantwave::datetime