Control cursor position also at bottom of window Post: 303043740

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Top Forums Shell Programming and Scripting Control cursor position also at bottom of window Post 303043740 by Ralph on Wednesday 5th of February 2020 09:22:13 AM

02-05-2020

Registered User

Quote:

Originally Posted by RudiC

Mind to share your final version here?

It's still the same as what I posted earlier. A bit longer than it has to be because of all the ifs and comments. I like the way you used parameter expansion in your version, but your version didn't scroll right on my system - an ordinary terminal emulator running Bash 5 on a Debian Linux.

Here my currently final version again:

Code:

function askYesOrNo {
        printf "\e[1;31;47m$1 [Y|n]\e[0m "      # print $1 in color
        printf "\e[s"                           # save cursor x-pos

        while true ; do
                read answer
                if [ -z "$answer" ] ; then
                        return 0
                elif [ "$(tr -d "NnYy" <<< $answer)" != "$answer" ] ; then
                        break
                fi

                # How many lines in this window?
                LINES=$(tput lines)

                # find cursor y-position ( line number )
                printf "\e[6n" ; read -sd R POS
                CURPOS=${POS#*[}; CUR_Y=${CURPOS%;*}

                if [ "$CUR_Y" -eq "$LINES" ] ; then
#                       printf "\e[u\e[1A\e[K" 
                        printf "\e[u\eM\e[K"
                else
                        printf "\e[u\e[K"
                fi
        done
        if [ "${answer^}" == "Y" ]; then
                return 0
        fi
        return 1
}

for (( i = 100, max = 110; i <= max; i++ )) ; do
        printf " %d\n" $i
        if [ $i -eq $max ] ; then
                if askYesOrNo "Do you wish to continue?" ; then
                        (( max += 10 ))
                fi
        fi
done

Only complaint now is that when the question is asked at the very bottom of the window the cursor still jumps to the next line, the window scrolls but the cursor jumps back to the end of the question. That can be avoided by using read -n 1 - as wisecracker suggested - but I like to use the Enter key to confirm.

Does it run the same way on your system?

Last edited by Ralph; 02-05-2020 at 10:24 AM.. Reason: typos

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maxdb_get_server_version - Returns the version of the MaxDB server as an integer

       Procedural style

SYNOPSIS

       int maxdb_get_server_version (resource  $link)

DESCRIPTION

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