1 files changed, 23 insertions, 0 deletions
diff --git a/include/posthaste/date.h b/include/posthaste/date.h
new file mode 100644
index 0000000..d091d79
--- /dev/null
+++ b/include/posthaste/date.h
@@ -0,0 +1,23 @@
+#ifndef DATE_H
+#define DATE_H
+
+/* stuff related to posthaste date handling */
+
+#include <stdint.h>
+#include <time.h>
+#include <stdbool.h>
+
+/* store dates as regular integers, with lowest five bits being the day, the
+ * next four the month, and the rest the year */
+typedef uint64_t ph_date_t;
+
+ph_date_t date_from_string(const char str[static 11]);
+ph_date_t date_from_numbers(unsigned year, unsigned month, unsigned day);
+void date_to_string(char str[static 11], ph_date_t date);
+void date_split(ph_date_t date, unsigned *year, unsigned *month, unsigned *day);
+bool date_valid(ph_date_t date);
+struct tm tm_from_date(ph_date_t date);
+ph_date_t date_from_tm(struct tm time);
+ph_date_t current_date();
+
+#endif /* DATE_H */