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validate case statement

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# 1  
Old 03-07-2012
validate case statement
Hello,

I need to take the input from user on below format and validate it.

ddd:hr:mm where ddd=mon-sun(days) , hr:hour (0-23) , mm=min(0-59).
Please assist me for getting input from user.

Thanks
Qamar
# 2  
Old 03-07-2012
Code:
OLDIFS="$IFS"
IFS=":"
while true
do
        printf "Enter time: "
        read DDD HH MM

        case "$DDD" in
                sun|mon|tue|wed|thu|fri|sat|sun)  ;;
                *) continue ;;
        esac

        case "$MM" in
                [0-5][0-9]) ;;
                *) continue;;
        esac

        case "$HH" in
                [0-1][0-9]) ;;
                2[0-3]) ;;
                *) continue;;
        esac

        break
done

IFS="$OLDIFS"

Last edited by Corona688; 03-07-2012 at 05:52 PM.. Reason: typo
These 3 Users Gave Thanks to Corona688 For This Post:
Chubler_XL qamar.alam Scrutinizer
# 3  
Old 03-07-2012
Nice solution corona688.

@qamar.alam, you can also print error/help messages before calling continue eg:

Code:
    *) echo "Hour must be between 0 and 23 - please reenter" ; continue ;;

This User Gave Thanks to Chubler_XL For This Post:
qamar.alam
# 4  
Old 03-07-2012
Thank you so much corona688... It's really good and straight forward solution.
Last edited by qamar.alam; 03-08-2012 at 02:36 PM..
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