1 files changed, 57 insertions, 0 deletions
diff --git a/src/mytime.c b/src/mytime.c
index ffb7323..e71259b 100644
--- a/src/mytime.c
+++ b/src/mytime.c
@@ -1,6 +1,8 @@
 #include "mytime.h"
 
 #include <assert.h>
+#include <math.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <stdbool.h>
 
@@ -36,3 +38,58 @@ void progress_time(uint64_t diff) {
 	// Right now the diff is only seconds resolution
 	global_time.tv_sec += diff;
 }
+
+struct timespec time_from_double(double t) {
+	double fraction;
+	double integral;
+	fraction = modf(t, &integral);
+	return (struct timespec) {
+		.tv_sec = integral,
+			.tv_nsec = fraction * 1000000000.0,
+	};
+}
+
+struct formatted_time format_time(struct timespec time) {
+	struct formatted_time res = {0};
+
+	struct tm tm;
+	gmtime_r(&time.tv_sec, &tm);
+	if(strftime(res.buf, 32, "%Y-%m-%d %H:%M:%S", &tm) >= 32) {
+		abort();
+	}
+
+	return res;
+}
+
+struct formatted_time format_duration(struct timespec time) {
+	struct formatted_time res = {0};
+
+	int hours = time.tv_sec / 3600;
+	int mins = (time.tv_sec % 3600) / 60;
+	int secs = time.tv_sec % 60;
+
+	if (hours > 0) {
+		snprintf(res.buf, 32, "%dh %02dm %02ds", hours, mins, secs);
+	} else if (mins > 0) {
+		snprintf(res.buf, 32, "%dm %02ds", mins, secs);
+	} else {
+		snprintf(res.buf, 32, "%ds", secs);
+	}
+	
+
+	return res;
+}
+
+struct timespec time_sub(const struct timespec *t1, const struct timespec *t2) {
+	assert(t1);
+	assert(t2);
+	struct timespec diff = {
+		.tv_sec = t1->tv_sec - t2->tv_sec,
+		.tv_nsec = t1->tv_nsec - t2->tv_nsec
+	};
+	if (diff.tv_nsec < 0) {
+		diff.tv_nsec += 1000000000;
+		diff.tv_sec--;
+	}
+	return diff;
+}