__foot_shell

#!/usr/bin/env sh
# vim: ft=sh ts=4 sw=4 sts=4 et :

# Foot shell program executed at each launch to reload colors on config change
# Source: https://codeberg.org/dnkl/foot/issues/708#issuecomment-1635542

MAIN_CONFIG="${XDG_CONFIG_HOME:-$HOME/.config}/foot/foot.ini"
THEME_CONFIG="${XDG_CONFIG_HOME:-$HOME/.config}/foot/theme.ini"

while inotifywait -qe create,modify,attrib "$MAIN_CONFIG" >/dev/null 2>&1; do
    # Set term 16 colors
    # ex: 'regular0=0b0b0b'
    sed -n -r 's/^\w*(regular|bright)([0-9])=([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2}).*/\1 \2 \3 \4 \5/p' "$THEME_CONFIG" |
        while read -r color_type idx r g b; do
            if [ "$color_type" = 'bright' ]; then
                idx=$(( idx + 8 ))
            fi
            printf '\033]4;%s;rgb:%s/%s/%s\033\\' "$idx" "$r" "$g" "$b" 2>/dev/null
        done

    # Set foreground/background colors
    # ex: 'foreground=ffffff'
    #     'background=0b0b0b'
    sed -n -r 's/^\w*foreground=([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2}).*/\1 \2 \3/p' "$THEME_CONFIG" |
        while read -r r g b; do
            printf '\033]10;rgb:%s/%s/%s\033\\' "$r" "$g" "$b" 2>/dev/null
        done
    sed -n -r 's/^\w*background=([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2}).*/\1 \2 \3/p' "$THEME_CONFIG" |
        while read -r r g b; do
            printf '\033]11;rgb:%s/%s/%s\033\\' "$r" "$g" "$b" 2>/dev/null
        done

    # Set cursor colors
    # ex: 'color=181819 e2e2e3'
    sed -n -r 's/^\w*color=([0-9a-fA-F]{6})\s+([0-9a-fA-F]{6}).*/\1 \2/p' "$THEME_CONFIG" |
        while read -r cursor_fg cursor_bg; do
            cursor_bg_r=$(printf '%s' "$cursor_bg" | cut -c1-2)
            cursor_bg_g=$(printf '%s' "$cursor_bg" | cut -c3-4)
            cursor_bg_b=$(printf '%s' "$cursor_bg" | cut -c5-6)
            cursor_fg_r=$(printf '%s' "$cursor_fg" | cut -c1-2)
            cursor_fg_g=$(printf '%s' "$cursor_fg" | cut -c3-4)
            cursor_fg_b=$(printf '%s' "$cursor_fg" | cut -c5-6)
            printf '\033]12;rgb:%s/%s/%s\033\\' "$cursor_bg_r" "$cursor_bg_g" "$cursor_bg_b" 2>/dev/null
            printf '\033]13;rgb:%s/%s/%s\033\\' "$cursor_fg_r" "$cursor_fg_g" "$cursor_fg_b" 2>/dev/null
        done

    # Set selection colors
    # ex: 'selection-foreground=3b3e48'
    #     'selection-background=e2e2e3'
    sed -n -r 's/^\w*selection-foreground=([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2}).*/\1 \2 \3/p' "$THEME_CONFIG" |
        while read -r r g b; do
            printf '\033]19;rgb:%s/%s/%s\033\\' "$r" "$g" "$b" 2>/dev/null
        done
    sed -n -r 's/^\w*selection-background=([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2}).*/\1 \2 \3/p' "$THEME_CONFIG" |
        while read -r r g b; do
            printf '\033]17;rgb:%s/%s/%s\033\\' "$r" "$g" "$b" 2>/dev/null
        done
done &

exec "$SHELL"