Re: [PATCH] Round-down years in "years+months" relative date view

[Jeff King <peff@peff.net>]

On Fri, Aug 28, 2009 at 09:03:19PM +0200, Alex Riesen wrote:

> +unsigned long approxidate(const char *date)
> +{
> +	struct timeval tv;
> +	gettimeofday(&tv, NULL);
> +	return approxidate_relative(date, &tv);
> +}

This now always calls gettimeofday, whereas the original approxidate
only did if parse_date failed.

I think you could also make this patch much smaller by just wrapping the
whole function and using a '0' sentinel for "you need to fill in the
time." Like:

---
diff --git a/date.c b/date.c
index 409a17d..b084d19 100644
--- a/date.c
+++ b/date.c
@@ -86,6 +86,14 @@ static int local_tzoffset(unsigned long time)
 
 const char *show_date(unsigned long time, int tz, enum date_mode mode)
 {
+	struct timeval now;
+	now.tv_sec = 0;
+	show_date_at_time(time, tz, mode, &now);
+}
+
+const char *show_date_at_time(unsigned long time, int tz, enum date_mode mode,
+		struct timeval now)
+{
 	struct tm *tm;
 	static char timebuf[200];
 
@@ -96,8 +104,8 @@ const char *show_date(unsigned long time, int tz, enum date_mode mode)
 
 	if (mode == DATE_RELATIVE) {
 		unsigned long diff;
-		struct timeval now;
-		gettimeofday(&now, NULL);
+		if (!now.tv_sec)
+			gettimeofday(&now, NULL);
 		if (now.tv_sec < time)
 			return "in the future";
 		diff = now.tv_sec - time;

On the other hand, refactoring the relative date code into its own
function is probably a good thing in the long run.

-Peff