1 files changed, 35 insertions, 0 deletions
diff --git a/src/time.cpp b/src/time.cpp
new file mode 100644
index 0000000..631e0f8
--- /dev/null
+++ b/src/time.cpp
@@ -0,0 +1,35 @@
+#include <erebos/time.h>
+
+#include <stdexcept>
+
+using namespace erebos;
+
+using std::runtime_error;
+using std::string;
+
+ZonedTime::ZonedTime(string str)
+{
+	intmax_t t;
+	unsigned int h, m;
+	char sign[2];
+	if (sscanf(str.c_str(), "%jd %1[+-]%2u%2u", &t, sign, &h, &m) != 4)
+		throw runtime_error("invalid zoned time");
+
+	time = std::chrono::system_clock::time_point(std::chrono::seconds(t));
+	zone = std::chrono::minutes((sign[0] == '-' ? -1 : 1) * (60 * h + m));
+}
+
+ZonedTime::operator string() const
+{
+	char buf[32];
+	unsigned int az = std::chrono::abs(zone).count();
+	snprintf(buf, sizeof(buf), "%jd %c%02u%02u",
+			(intmax_t) std::chrono::duration_cast<std::chrono::seconds>(time.time_since_epoch()).count(),
+			zone < decltype(zone)::zero() ? '-' : '+', az / 60, az % 60);
+	return string(buf);
+}
+
+ZonedTime ZonedTime::now()
+{
+	return ZonedTime(std::chrono::system_clock::now());
+}