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-rw-r--r--lib/chronology.cpp12
-rw-r--r--lib/chronology.h2
2 files changed, 14 insertions, 0 deletions
diff --git a/lib/chronology.cpp b/lib/chronology.cpp
new file mode 100644
index 0000000..8707bba
--- /dev/null
+++ b/lib/chronology.cpp
@@ -0,0 +1,12 @@
+#include "chronology.h"
+
+time_t
+operator""_time_t(const char * iso, size_t)
+{
+ struct tm tm {};
+
+ if (const auto end = strptime(iso, "%FT%T", &tm); !end || *end) {
+ throw std::invalid_argument("Invalid date");
+ }
+ return mktime(&tm);
+}
diff --git a/lib/chronology.h b/lib/chronology.h
index 1980116..688a1f7 100644
--- a/lib/chronology.h
+++ b/lib/chronology.h
@@ -1,5 +1,7 @@
#pragma once
#include <chrono>
+#include <ctime>
using TickDuration = std::chrono::duration<float, std::chrono::seconds::period>;
+time_t operator""_time_t(const char * iso, size_t);