This patch adds Nerd Font clock icons that change according to the
current hour (12-hour format). The icons are chosen based on the
hour string extracted via strftime(%I).
Changes:
- Added error checks for time() and localtime()
- Use tm->tm_hour directly instead of strftime+atoi
- Removed unnecessary <stdlib.h>
- Made icons array static
---
components/datetime.c | 33 +++++++++++++++++++++++++++++++--
1 file changed, 31 insertions(+), 2 deletions(-)
diff --git a/components/datetime.c b/components/datetime.c
index 5b10daf..e7f0cb8 100644
--- a/components/datetime.c
+++ b/components/datetime.c
@@ -9,12 +9,41 @@ const char *
datetime(const char *fmt)
{
time_t t;
+ struct tm *tm;
+ char hours[3];
+ char tmp[BUFSIZ];
+ const char *icon = "\0";
+ static const char *icons[] = {
+ " ", " ", " ", " ",
+ " ", " ", " ", " ",
+ " ", " ", " ", " ",
+ };
+ int hour_int;
t = time(NULL);
- if (!strftime(buf, sizeof(buf), fmt, localtime(&t))) {
+ if (t == (time_t)-1) {
+ warn("time: Failed to get current time");
+ return NULL;
+ }
+
+ tm = localtime(&t);
+ if (!tm) {
+ warn("localtime: Failed to convert time");
+ return NULL;
+ }
+
+ if (!strftime(tmp, sizeof(tmp), fmt, tm)) {
warn("strftime: Result string exceeds buffer size");
return NULL;
}
- return buf;
+ strftime(hours, sizeof(hours), "%I", tm);
+
+ hour_int = tm->tm_hour % 12;
+ if (hour_int == 0)
+ hour_int = 12;
+
+ icon = icons[hour_int - 1];
+
+ return bprintf("%s%s", icon, tmp);
}
--
2.53.0
