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#!/bin/sh
# File preview handler for lf.
set -C -f
IFS="$(printf '%b_' '\n')"; IFS="${IFS%_}"
image() {
if [ -n "$DISPLAY" ] && [ -z "$WAYLAND_DISPLAY" ] && command -V ueberzug >/dev/null 2>&1; then
printf '{"action": "add", "identifier": "PREVIEW", "x": "%s", "y": "%s", "width": "%s", "height": "%s", "scaler": "contain", "path": "%s"}\n' "$4" "$5" "$(($2-1))" "$(($3-1))" "$1" > "$FIFO_UEBERZUG"
else
mediainfo "$1"
fi
}
ifub() {
[ -n "$DISPLAY" ] && [ -z "$WAYLAND_DISPLAY" ] && command -V ueberzug >/dev/null 2>&1
}
# Note that the cache file name is a function of file information, meaning if
# an image appears in multiple places across the machine, it will not have to
# be regenerated once seen.
case "$(file --dereference --brief --mime-type -- "$1")" in
image/*) image "$1" "$2" "$3" "$4" "$5" ;;
text/html) lynx -width="$4" -display_charset=utf-8 -dump "$1" ;;
text/troff) man ./ "$1" | col -b ;;
text/* | */xml | application/json) bat -p --theme base16 --terminal-width "$4" -f "$1" ;;
application/zip) atool --list -- "$1" ;;
audio/* | application/octet-stream) mediainfo "$1" || exit 1;;
video/* )
CACHE="${XDG_CACHE_HOME:-$HOME/.cache}/lf/thumb.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | awk '{print $1}')"
[ ! -f "$CACHE" ] && ffmpegthumbnailer -i "$1" -o "$CACHE" -s 0
image "$CACHE" "$2" "$3" "$4" "$5"
;;
*/pdf)
CACHE="${XDG_CACHE_HOME:-$HOME/.cache}/lf/thumb.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | awk '{print $1}')"
[ ! -f "$CACHE.jpg" ] && pdftoppm -jpeg -f 1 -singlefile "$1" "$CACHE"
image "$CACHE.jpg" "$2" "$3" "$4" "$5"
;;
*opendocument*) odt2txt "$1" ;;
application/pgp-encrypted) gpg -d -- "$1" ;;
esac
exit 1
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