From: Steven Baltakatei Sandoval Date: Sun, 28 Jun 2020 20:30:50 +0000 (+0000) Subject: feat(unitproc):Add error codes to secondsUntilMidnight X-Git-Tag: 0.2.0~33 X-Git-Url: https://zdv2.bktei.com/gitweb/BK-2020-03.git/commitdiff_plain/5ef33b04f8672513023dbacdd5e007a1b19a3338?ds=sidebyside;hp=--cc feat(unitproc):Add error codes to secondsUntilMidnight --- 5ef33b04f8672513023dbacdd5e007a1b19a3338 diff --git a/unitproc/bktemp-secondsUntilMidnight b/unitproc/bktemp-secondsUntilMidnight index e71b2fd..954afa5 100644 --- a/unitproc/bktemp-secondsUntilMidnight +++ b/unitproc/bktemp-secondsUntilMidnight @@ -1,14 +1,19 @@ #!/bin/bash - # Desc: Template to check that apps, files, or dirs exist. -# Author: Steven Baltaktei Sandoval -# License: GPLv3+ +# Author: Steven Baltaktei Sandoval; License: GPLv3+ #==BEGIN Define script parameters== #===BEGIN Declare local script functions=== +yell() { echo "$0: $*" >&2; } # Yell, Die, Try Three-Fingered Claw technique; # Ref/Attrib: https://stackoverflow.com/a/25515370 +die() { yell "$*"; exit 111; } +try() { "$@" || die "cannot $*"; } timeUntilMidnight(){ # Desc: Report seconds until midnight - # Output: stdout: seconds until midnight + # Output: stdout: integer seconds until midnight + # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0 + # Usage: timeUntilMidnight + # Usage: if ! myTTL="$(timeUntilMidnight)"; then yell "ERROR in if statement"; exit 1; fi + local returnState TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second. TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)" # Produce separator-less current timestamp with resolution 1 second. DATE_CURRENT="$(date -d "$TIME_CURRENT" --iso-8601=date)" ; # Produce `date`-parsable current timestamp with resolution of 1 day. @@ -16,12 +21,33 @@ timeUntilMidnight(){ DATE_TOMORROW="$(date -d "$TIME_CURRENT next day" --iso-8601=date)" ; # Produce timestamp of tomorrow's date (res. 1 day). TIME_NEXT_MIDNIGHT="$(date -d "$DATE_TOMORROW" --iso-8601=seconds)" ; # Produce `date`-parsable timestamp of closest future midnight (res. 1 second). SECONDS_UNTIL_NEXT_MIDNIGHT="$(( $(date +%s -d "$TIME_NEXT_MIDNIGHT") - $(date +%s -d "$TIME_CURRENT") ))" ; # Calculate seconds until closest future midnight (res. 1 second). - echo "$SECONDS_UNTIL_NEXT_MIDNIGHT" 2>/dev/null; + if [[ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -gt 0 ]]; then + returnState="true"; + elif [[ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -eq 0 ]]; then + returnState="WARNING_ZERO"; + yell "WARNING:Reported time until midnight exactly zero."; + elif [[ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -lt 0 ]]; then + returnState="WARNING_NEGATIVE"; + yell "WARNING:Reported time until midnight is negative."; + fi + + try echo "$SECONDS_UNTIL_NEXT_MIDNIGHT"; # Report + + #===Determine function return code=== + if [[ "$returnState" = "true" ]]; then + return 0; + elif [[ "$returnState" = "WARNING_ZERO" ]]; then + return 1; + elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then + return 2; + fi } # Report seconds until next midnight #===END Declare local script functions=== #==END Define script parameters== #==BEGIN sample code== -echo "Time until next midnight (seconds):$(timeUntilMidnight)" +try echo "Time until next midnight (seconds):$(timeUntilMidnight)" # simple report + +if ! myTTL="$(timeUntilMidnight)"; then yell "ERROR in if statement for myTTL:$myTTL"; exit 1; fi # Use of exit code to exit early if time <= 0. #==END sample code==