try() { "$@" || die "cannot $*"; }
timeUntilNextDay(){
# Desc: Report seconds until next day.
- # Version: 1.0.0
+ # Version: 1.0.3
# Output: stdout: integer seconds until next day
# Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0
# Usage: timeUntilNextDay
# Usage: if ! myTTL="$(timeUntilNextDay)"; then yell "ERROR in if statement"; exit 1; fi
# Depends: date 8, echo 8, yell, try
- local returnState TIME_CURRENT TIME_NEXT_DAY SECONDS_UNTIL_NEXT_DAY
-
- TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
- TIME_NEXT_DAY="$(date -d "$TIME_CURRENT next day" --iso-8601=date)"; # Produce timestamp of beginning of tomorrow with resolution of 1 second.
- SECONDS_UNTIL_NEXT_DAY="$(( $(date +%s -d "$TIME_NEXT_DAY") - $(date +%s -d "$TIME_CURRENT") ))" ; # Calculate seconds until closest future midnight (res. 1 second).
- if [[ "$SECONDS_UNTIL_NEXT_DAY" -gt 0 ]]; then
+ local returnState timeCurrent timeNextDay secondsUntilNextDay
+ timeCurrent="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
+ timeNextDay="$(date -d "$timeCurrent next day" --iso-8601=date)"; # Produce timestamp of beginning of tomorrow with resolution of 1 second.
+ secondsUntilNextDay="$(( $(date +%s -d "$timeNextDay") - $(date +%s -d "$timeCurrent") ))" ; # Calculate seconds until closest future midnight (res. 1 second).
+ if [[ "$secondsUntilNextDay" -gt 0 ]]; then
returnState="true";
- elif [[ "$SECONDS_UNTIL_NEXT_DAY" -eq 0 ]]; then
+ elif [[ "$secondsUntilNextDay" -eq 0 ]]; then
returnState="warning_zero";
yell "WARNING:Reported time until next day exactly zero.";
- elif [[ "$SECONDS_UNTIL_NEXT_DAY" -lt 0 ]]; then
+ elif [[ "$secondsUntilNextDay" -lt 0 ]]; then
returnState="warning_negative";
yell "WARNING:Reported time until next day is negative.";
fi
- try echo "$SECONDS_UNTIL_NEXT_DAY"; # Report
+ try echo "$secondsUntilNextDay"; # Report
# Determine function return code
if [[ "$returnState" = "true" ]]; then