summaryrefslogtreecommitdiffstats
path: root/dev/a3-earthquake/date.cc
diff options
context:
space:
mode:
Diffstat (limited to 'dev/a3-earthquake/date.cc')
-rw-r--r--dev/a3-earthquake/date.cc127
1 files changed, 127 insertions, 0 deletions
diff --git a/dev/a3-earthquake/date.cc b/dev/a3-earthquake/date.cc
new file mode 100644
index 0000000..620cc74
--- /dev/null
+++ b/dev/a3-earthquake/date.cc
@@ -0,0 +1,127 @@
+/** CSci-4611 Assignment 3: Earthquake
+ */
+
+#include <ctime>
+#include "date.h"
+
+using namespace std;
+
+const int SECONDS_PER_4_YEARS=126230400;
+
+Date::Date() {
+ year_ = 0;
+ month_ = 0;
+ day_ = 0;
+ hour_ = 0;
+ minute_ = 0;
+ second_ = 0;
+ ctime_ = 0;
+ fouryears_ = 0;
+}
+
+// for visual studio, disable warning about localtime being unsafe
+#pragma warning(push)
+#pragma warning(disable: 4996)
+
+Date::Date(double seconds) {
+ double tweakedSeconds = seconds;
+ fouryears_ = 0;
+ while (tweakedSeconds < 0) {
+ tweakedSeconds += SECONDS_PER_4_YEARS;
+ fouryears_++;
+ }
+ ctime_ = int(tweakedSeconds);
+ tm *t;
+ t = localtime(&ctime_);
+ year_ = t->tm_year + 1900 - 4 * fouryears_;
+ month_ = t->tm_mon + 1;
+ day_ = t->tm_mday;
+ hour_ = t->tm_hour;
+ minute_ = t->tm_min;
+ second_ = t->tm_sec + (tweakedSeconds - ctime_);
+}
+
+#pragma warning(pop)
+
+Date::Date(int m, int d, int y) {
+ month_ = m;
+ day_ = d;
+ year_ = y;
+ hour_ = 0;
+ minute_ = 0;
+ second_ = 0;
+ fouryears_ = 0;
+ tm t;
+ while (year_ + fouryears_*4 < 1970) {
+ fouryears_++;
+ }
+ t.tm_year = year_ - 1900 + fouryears_ * 4;
+ t.tm_mon = month_ - 1;
+ t.tm_mday = day_;
+ t.tm_hour = 0;
+ t.tm_min = 0;
+ t.tm_sec = 0;
+ ctime_ = mktime(&t);
+}
+
+Date::Date(int m, int d, int y, int hr, int min, double sec) {
+ month_ = m;
+ day_ = d;
+ year_ = y;
+ hour_ = hr;
+ minute_ = min;
+ second_ = sec;
+ fouryears_ = 0;
+ tm t;
+ while (year_ + fouryears_*4 < 1970) {
+ fouryears_++;
+ }
+ t.tm_year = year_ - 1900 + fouryears_ * 4;
+ t.tm_mon = month_ - 1;
+ t.tm_mday = day_;
+ t.tm_hour = hour_;
+ t.tm_min = minute_;
+ t.tm_sec = int(second_);
+ ctime_ = mktime(&t);
+}
+
+bool Date::operator<(const Date& other) {
+ return ToSeconds() < other.ToSeconds();
+}
+
+bool Date::operator>(const Date& other) {
+ return ToSeconds() > other.ToSeconds();
+}
+
+double Date::ToSeconds() const {
+ return ctime_ + second_ - int(second_) - double(fouryears_) * SECONDS_PER_4_YEARS;
+}
+
+double Date::SecondsUntil(const Date& other) const {
+ return ToSeconds() - other.ToSeconds();
+}
+
+
+int Date::year() {
+ return year_;
+}
+
+int Date::month() {
+ return month_;
+}
+
+int Date::day() {
+ return day_;
+}
+
+int Date::hour() {
+ return hour_;
+}
+
+int Date::minute() {
+ return minute_;
+}
+
+double Date::second() {
+ return second_;
+}