config/lf/pv
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#!/bin/sh
set -euf
draw() {
jq -nc --argjson x "$x" --argjson y "$y" \
--argjson width "$width" --argjson height "$height" \
--arg path "$1" '
{
"action": "add",
"identifier": "preview",
"x": $x,
"y": $y,
"width": $width,
"height": $height,
"scaler": "contain",
"scaling_position_x": 0.5,
"scaling_position_y": 0.5,
"path": $path
}' >"$FIFO_UEBERZUG"
exit 1
}
hash() {
printf '%s/.cache/lf/%s' "$HOME" \
"$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f -- "$1")" | sha256sum | cut -d' ' -f1)"
}
cache() {
if [ -f "$1" ]; then
draw "$1"
fi
}
file="$1"
width="$2"
height="$3"
x="$4"
y="$5"
if ! [ -f "$file" ] && ! [ -h "$file" ]; then
exit
fi
default_x="1920"
default_y="1080"
ext="$(printf '%s' "$file" | tr '[:upper:]' '[:lower:]')"
ext="${ext##*.}"
case "$ext" in
7z|a|ace|alz|arc|arj|bz|bz2|cab|cpio|deb|gz|jar|\
lha|lrz|lz|lzh|lzma|lzo|rar|rpm|rz|t7z|tar|tbz|\
tbz2|tgz|tlz|txz|tZ|tzo|war|xz|Z|zip)
als -- "$file"
exit 0
;;
[1-8])
COLUMNS="$width" man -- "$file" | col -b
exit 0
;;
pdf)
if [ -n "${FIFO_UEBERZUG-}" ]; then
cache="$(hash "$file")"
cache "$cache.jpg"
pdftoppm -f 1 -l 1 \
-scale-to-x "$default_x" \
-scale-to-y -1 \
-singlefile \
-jpeg \
-- "$file" "$cache"
draw "$cache.jpg"
else
pdftotext -nopgbrk -q -- "$file" -
exit 0
fi
;;
djvu|djv)
if [ -n "${FIFO_UEBERZUG-}" ]; then
cache="$(hash "$file").tiff"
cache "$cache"
ddjvu -format=tiff -quality=90 -page=1 -size="${default_x}x${default_y}" \
- "$cache" <"$file"
draw "$cache"
else
djvutxt - <"$file"
exit 0
fi
;;
docx|odt|epub)
pandoc -s -t plain -- "$file"
exit 0
;;
htm|html|xhtml)
lynx -dump -- "$file"
exit 0
;;
svg)
if [ -n "${FIFO_UEBERZUG-}" ]; then
cache="$(hash "$file").jpg"
cache "$cache"
convert -- "$file" "$cache"
draw "$cache"
fi
;;
esac
mime="$(file -Lb --mime-type -- "$file")"
case "$mime" in
text/*)
source-highlight -q --outlang-def=esc.outlang --style-file=esc.style -i "$file" || cat -- "$file"
exit 0
;;
image/*)
if [ -n "${FIFO_UEBERZUG-}" ]; then
orientation="$(identify -format '%[EXIF:Orientation]\n' -- "$file")"
if [ -n "$orientation" ] && [ "$orientation" != 1 ]; then
cache="$(hash "$file").jpg"
cache "$cache"
convert -- "$file" -auto-orient "$cache"
draw "$cache"
else
draw "$file"
fi
fi
;;
video/*)
if [ -n "${FIFO_UEBERZUG-}" ]; then
cache="$(hash "$file").jpg"
cache "$cache"
ffmpegthumbnailer -i "$file" -o "$cache" -s 0
draw "$cache"
fi
;;
esac
header_text="File Type Classification"
header=""
len="$(( (width - (${#header_text} + 2)) / 2 ))"
if [ "$len" -gt 0 ]; then
for i in $(seq "$len"); do
header="-$header"
done
header="$header $header_text "
for i in $(seq "$len"); do
header="$header-"
done
else
header="$header_text"
fi
printf '\033[7m%s\033[0m\n' "$header"
file -Lb -- "$file" | fold -s -w "$width"
exit 0