ao-mud/spells/cantrips/fathom-cursor

#!/bin/sh

# This spell reveals the x and y coordinates of the cursor in the terminal window.

# Define the function to calculate the position of the cursor
fathom_cursor() {
    x=false
    y=false
    verbose=false
    for arg; do
        case "$arg" in
            --verbose|-v) verbose=true ;;
            -x) x=true ;;
            -y) y=true ;;
        esac
    done

    # Get the position of the cursor
    oldstty=$(stty -g)
    stty raw -echo min 0
    printf "\033[6n" > /dev/tty

    result=""
    char=""
    while IFS= read -r -n 1 char; do
        result="$result$char"
        if [ "$char" = "R" ]; then
            break
        fi
    done < /dev/tty
    stty "$oldstty"

    ROW="${result#*[}"
    COL="${result%;R}"
    position=$(printf "%s;%s" "$ROW" "$COL")

    if $x && $y; then
        if $verbose; then
            printf "X: %s\n" "${position%%;*}"
            printf "Y: %s\n" "${position##*;}"
        else
            printf "%s\n" "${position%%;*}"
            printf "%s\n" "${position##*;}"
        fi
    else
        if $x; then
            [ "$verbose" = true ] && printf "X: "
            printf "%s\n" "${position%%;*}"
        elif $y; then
            [ "$verbose" = true ] && printf "Y: "
            printf "%s\n" "${position##*;}"
        else
            [ "$verbose" = true ] && printf "Position: "
            printf "%s\n" "$position"
        fi
    fi
}

fathom_cursor "$@"