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|
# Timeout protection (prevents hanging)
TIMEOUT=5
if [ -z "$LF_PREVIEW_RUNNING" ]; then
export LF_PREVIEW_RUNNING=1
exec timeout "$TIMEOUT" "$0" "$@"
fi
# Parameters from lf
FILE_PATH="$1"
WIDTH="$2"
HEIGHT="$3"
X="$4"
Y="$5"
# Temp dir
TMP_DIR="/tmp/preview-$(id -u)"
mkdir -p "$TMP_DIR"
# Unique temp file per actual file using inode
INODE=$(stat -c '%i' "$FILE_PATH" 2>/dev/null || echo "0")
# Render image via kitty
render_image() {
local file="$1"
local tries=0
while [ ! -s "$file" ]; do
sleep 0.2
tries=$((tries + 1))
done
[ ! -s "$file" ] && exit 0
"$KITTEN" icat --clear --stdin no --transfer-mode memory --place "${w}x${h}@${x}x${y}" /dev/null </dev/null >/dev/tty
"$KITTEN" icat --stdin no --transfer-mode memory --place "${w}x${h}@${x}x${y}" "$file" </dev/null >/dev/tty
exit 1
}
file="$1"
w="$2"
h="$3"
x="$4"
y="$5"
# Ensure file exists
[ ! -r "$FILE_PATH" ] && exit 0
MIMETYPE=$("$FILE" --dereference --brief --mime-type "$FILE_PATH")
case "$MIMETYPE" in
# --- IMAGES ---
image/svg+xml)
TMP_IMG="$TMP_DIR/svg-${INODE}.png"
if [ ! -f "$TMP_IMG" ]; then
TMP_IMG="$TMP_IMG.tmp"
rsvg-convert "$FILE_PATH" -o "$TMP_IMG" >/dev/null 2>&1
[ -s "$TMP_IMG" ] && mv "$TMP_IMG" "$TMP_IMG"
fi
render_image "$TMP_IMG"
;;
image/*)
render_image "$FILE_PATH"
;;
# --- VIDEOS ---
video/*)
TMP_IMG="$TMP_DIR/vid-${INODE}.png"
if [ ! -f "$TMP_IMG" ]; then
if command -v ffmpegthumbnailer >/dev/null; then
ffmpegthumbnailer -i "$FILE_PATH" -o "$TMP_IMG" -s 0 -q 5 >/dev/null 2>&1
else
"$FFMPEG" -y -i "$FILE_PATH" -ss 00:00:01 -vframes 1 "$TMP_IMG" >/dev/null 2>&1
fi
fi
render_image "$TMP_IMG"
;;
# --- AUDIO ---
audio/*)
TMP_IMG="$TMP_DIR/aud-${INODE}.png"
if [ ! -f "$TMP_IMG" ]; then
"$FFMPEG" -y -i "$FILE_PATH" \
-filter_complex "showwavespic=s=${WIDTH}x${HEIGHT}:colors=white" \
-frames:v 1 "$TMP_IMG" >/dev/null 2>&1
fi
"$FFPROBE" -hide_banner -v quiet -show_format -show_streams "$FILE_PATH"
render_image "$TMP_IMG"
exit 0
;;
# --- PDF ---
application/pdf)
TMP_IMG="$TMP_DIR/pdf-${INODE}.png"
if [ ! -f "$TMP_IMG" ]; then
"$PDFTOPPM" -f 1 -l 1 -png -singlefile \
-scale-to $((WIDTH * 8)) \
-r 72 \
"$FILE_PATH" "${TMP_IMG%.png}" >/dev/null 2>&1
fi
render_image "$TMP_IMG"
;;
# --- EPUB / MOBI ---
application/epub+zip|application/x-mobipocket-ebook)
TMP_IMG="$TMP_DIR/epub-${INODE}.png"
if [ ! -f "$TMP_IMG" ]; then
"$OUCH" decompress "$FILE_PATH" --limit "*/cover*.jpg" --dir "$TMP_DIR" >/dev/null 2>&1
mv "$TMP_DIR"/cover*.jpg "$TMP_IMG" 2>/dev/null
fi
[ -s "$TMP_IMG" ] && render_image "$TMP_IMG"
;;
# --- OFFICE ---
application/vnd.openxmlformats-officedocument.*|application/msword|application/vnd.oasis.opendocument.*)
TMP_IMG="$TMP_DIR/doc-${INODE}.png"
if [ ! -f "$TMP_IMG" ]; then
libreoffice --headless --convert-to pdf --outdir "$TMP_DIR" "$FILE_PATH" >/dev/null 2>&1
PDF_VER="${TMP_DIR}/$(basename "${FILE_PATH%.*}").pdf"
if [ -f "$PDF_VER" ]; then
"$PDFTOPPM" -f 1 -l 1 -png -singlefile "$PDF_VER" "${TMP_IMG%.png}" >/dev/null 2>&1
fi
fi
render_image "$TMP_IMG"
;;
# --- ARCHIVES ---
application/zip|application/x-7z-compressed|application/x-rar|application/x-tar|application/x-gzip)
"$OUCH" list -t "$FILE_PATH" 2>/dev/null
exit 0
;;
# --- TEXT / CODE ---
text/*|application/json|application/javascript|application/xml)
"$BAT" --color=always --style=numbers --line-range :200 "$FILE_PATH" 2>/dev/null
exit 0
;;
# --- FONTS ---
font/*|application/vnd.ms-fontobject|application/x-font-ttf)
fc-scan "$FILE_PATH"
exit 0
;;
# --- FALLBACK ---
*)
"$FILE" --dereference --brief "$FILE_PATH"
echo "------------------------------------------------"
hexdump -C "$FILE_PATH" | head -n 100
exit 0
;;
esac
exit 0
|
