| 1 | #! /bin/bash |
| 2 | |
| 3 | declare -a paths |
| 4 | declare -i n=0 |
| 5 | |
| 6 | read_command() { |
| 7 | local char |
| 8 | |
| 9 | read -rsn 1 char |
| 10 | case "$char" in |
| 11 | q | Q) echo 'CMD_QUIT';; |
| 12 | h | H) echo 'CMD_MOVE_BACK';; |
| 13 | l | L) echo 'CMD_MOVE_FORWARD';; |
| 14 | f | F) echo 'CMD_FAVORITE';; |
| 15 | *) echo 'CMD_UKNOWN';; |
| 16 | esac |
| 17 | } |
| 18 | |
| 19 | paths_find() { |
| 20 | local -r root_dir="$1" |
| 21 | local path |
| 22 | |
| 23 | IFS=$'\n' |
| 24 | for path in $(find "$root_dir" -type f) |
| 25 | do |
| 26 | if file "$path" | grep 'image data' > /dev/null |
| 27 | then |
| 28 | (( n++ )) |
| 29 | # \r jumps to the beginning of the line: |
| 30 | printf '\rFound %d images.' "$n" >&2 |
| 31 | paths["$n"]="$path" |
| 32 | fi |
| 33 | done |
| 34 | unset IFS |
| 35 | printf '\n' >&2 |
| 36 | } |
| 37 | |
| 38 | paths_preview() { |
| 39 | local -i i |
| 40 | local path |
| 41 | |
| 42 | for ((i=1; i<=n; i++)) |
| 43 | do |
| 44 | path="${paths[$i]}" |
| 45 | |
| 46 | printf '%d of %d : %s\n' "$i" "$n" "$path" |
| 47 | feh --bg-scale "$path" |
| 48 | |
| 49 | case "$(read_command)" in |
| 50 | CMD_QUIT) |
| 51 | exit 0;; |
| 52 | CMD_MOVE_BACK) |
| 53 | # TODO Cycle around. |
| 54 | # One step further back than needed, |
| 55 | # to correct for the upcoming i++. |
| 56 | ((i = i - 2)) |
| 57 | if [[ i -lt 0 ]]; then |
| 58 | i=-1 |
| 59 | fi;; |
| 60 | CMD_MOVE_FORWARD) |
| 61 | ;; |
| 62 | CMD_FAVORITE) |
| 63 | wallpaper_fav |
| 64 | ((i--));; |
| 65 | CMD_UKNOWN) |
| 66 | # Remain |
| 67 | ((i--));; |
| 68 | esac |
| 69 | done |
| 70 | } |
| 71 | |
| 72 | main() { |
| 73 | local root_dir |
| 74 | |
| 75 | case "$1" in |
| 76 | '') root_dir="$DIR_WALLPAPERS";; |
| 77 | *) root_dir="$1";; |
| 78 | esac |
| 79 | |
| 80 | paths_find "$root_dir" |
| 81 | paths_preview |
| 82 | } |
| 83 | |
| 84 | main "$@" |