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figured out how to keep state

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Dylan Araps 2020-08-03 17:26:40 +03:00
parent 9b8a2e4241
commit 01631abe86
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GPG Key ID: 46D62DD9F1DE636E
1 changed files with 62 additions and 39 deletions
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shfm
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@ -24,68 +24,91 @@ term_resize() {
}
list_print() {
printf '\033[2J\033[H'
printf '\033[2J\033[H\033[31;7m'
for file in *; do
printf '%s\n' "$file"
for file do
printf '%s\033[m\n' "$file"
done
}
key_handle() {
case $key$esc in
k?|A2) # ARROW UP
;;
j?|B2) # ARROW DOWN
;;
l?|C2) # ARROW RIGHT
;;
h?|D2) # ARROW LEFT
;;
g?)
;;
G?)
;;
q?)
exit 0
;;
# handle keys which emit escape sequences
''*) esc=1 ;;
'[1') esc=2 ;;
*) esc=0 ;;
esac
printf '\033[%sH' "$y"
}
redraw() {
list_print
list_print "$@"
status_line
}
status_line() {
printf '\0337\033[%sH\033[31;7m%-*s\033[m\0338' \
"$LINES" "$COLUMNS" "${1:-$PWD}"
"$LINES" "$COLUMNS" "${1:-$PWD (${y:=0}/$max)}"
}
print_line() {
[ "$1" != "${y:=0}" ] || {
printf '\033[31;7m'
}
shift "$(($1 + 1))"
printf '\033[K%s\033[m\r' "$1"
}
main() {
# change directory to the first argument
cd "${1:-"$PWD"}"
set -- *
max=$#
term_resize
term_setup
redraw
redraw "$@"
trap 'term_reset' EXIT INT
trap 'term_resize; redraw' WINCH
trap 'term_resize' WINCH
while key=$(dd ibs=1 count=1 2>/dev/null); do
key_handle "$key"
redraw
case $key$esc in
k?|A2) # ARROW UP
y=$((y - 1 < 0 ? 0 : y - 1))
print_line "$((y + 1))" "$@"
printf '\033[A'
print_line "$y" "$@"
status_line
;;
j?|B2) # ARROW DOWN
y=$((y + 1 > max - 1 ? max - 1 : y + 1))
print_line "$((y - 1))" "$@"
printf '\n'
print_line "$y" "$@"
status_line
;;
l?|C2) # ARROW RIGHT
;;
h?|D2) # ARROW LEFT
;;
g?)
;;
G?)
;;
q?)
exit 0
;;
# handle keys which emit escape sequences
''*) esc=1 ;;
'[1') esc=2 ;;
*) esc=0 ;;
esac
done
}