From de17c084e8cd0257006d3cfc85966a34ed60858e Mon Sep 17 00:00:00 2001
From: Luca Bilke <bilke@tralios.de>
Date: Wed, 24 Jan 2024 09:42:18 +0100
Subject: [PATCH] improve preview script

---
 .config/lf/preview | 103 +++++++++++++++++++++++++--------------------
 1 file changed, 58 insertions(+), 45 deletions(-)

diff --git a/.config/lf/preview b/.config/lf/preview
index cf62f0fc..7bc9d61c 100755
--- a/.config/lf/preview
+++ b/.config/lf/preview
@@ -5,12 +5,18 @@ RESET="\033[0m"
 
 set -C -f
 
+f=$1
+w=$2
+h=$3
+x=$4
+y=$5
+
 image() {
-	f=$1
-	w=$2
-	h=$3
-	x=$4
-	y=$5
+    f=$1
+    w=$2
+    h=$3
+    x=$4
+    y=$5
 	if [ -f "$1" ] && [ -n "$DISPLAY" ] && [ -z "$WAYLAND_DISPLAY" ] && command -V ueberzug >/dev/null 2>&1; then
 		printf '{"action": "add", "identifier": "PREVIEW", "x": "%s", "y": "%s", "width": "%s", "height": "%s", "scaler": "contain", "path": "%s"}\n' "$(($4 + 3))" "$(($5 + 1))" "$(($2 - 6))" "$(($3 - 2))" "$1" >"$FIFO_UEBERZUG"
 	fi
@@ -18,11 +24,11 @@ image() {
 }
 
 video() {
-	f=$1
-	w=$2
-	h=$3
-	x=$4
-	y=$5
+    f=$1
+    w=$2
+    h=$3
+    x=$4
+    y=$5
 	thumb="$(vidthumb "$f")" || (
 		printf "%b" "\033[31mvidthumb script not in path\033[0m"
 		return 1
@@ -35,8 +41,8 @@ batorcat() {
 	w=$2
 	command -v bat >/dev/null 2>&1 && bat --color=always --style=plain --pager=never --terminal-width "$((w - 2))" "$f" && exit 0
 	command -v batcat >/dev/null 2>&1 && batcat --color=always --style=plain --pager=never --terminal-width "$((w - 2))" "$f" && exit 0
-	cat "$f" && exit 0
-	exit 1
+	cat "$f"
+    exit 0
 }
 
 run() {
@@ -52,42 +58,49 @@ run() {
 	fi
 }
 
+mimetest() {
+    case "$1" in
+        text/*) batorcat "$f" "$w" ;;
+        */pdf)
+            [ ! -f "${CACHE}.jpg" ] && run pdftoppm -jpeg -f 1 -singlefile "$f" "$CACHE"
+            image "${CACHE}.jpg" "$w" "$h" "$x" "$y"
+            ;;
+        */x-bzip-compressed-tar | */x-compressed-tar | */x-xz-compressed-tar) run als -- "$f" ;;
+        */x-7z-compressed | */vnd.rar | */x-tar | */zip | */x-java-archive | */x-xz | */gzip) run 7z l "$f" | sed 1,11d ;;
+        */x-cd-image) run iso-info --no-header -l "$f" ;;
+        */x-bittorrent) run transmission-show "$f" ;;
+        */vnd.sun.xml.writer) run odt2txt "$f" ;;
+        */msword) run catdoc "$f" ;;
+        */vnd.openxmlformats-officedocument.wordprocessingml.document) run docx2txt <"$f" ;;
+        */vnd.ms-excel) run ssconvert --export-type=Gnumeric_stf:stf_csv "$f" "fd://1" | batorcat --language=csv ;;
+        */vnd.openxmlformats-officedocument.spreadsheetml.sheet) run ssconvert --export-type=Gnumeric_stf:stf_csv "$f" "fd://1" | batorcat --language=csv ;;
+        */epub+zip)
+            [ ! -f "$CACHE" ] && run epub-thumbnailer "$f" "$CACHE" 1024
+            image "$CACHE" "$w" "$h" "$x" "$y"
+            ;;
+        */pgp-encrypted) run gpg -d -- "$f" ;;
+        */pkix-cert) run openssl x509 -text -noout -in "$f" ;;
+        image/svg+xml)
+            [ ! -f "$CACHE" ] && run inkscape --convert-dpi-method=none -o "$CACHE" --export-overwrite -D --export-png-color-mode=RGBA_16 "$f"
+            image "$CACHE" "$w" "$h" "$x" "$y"
+            ;;
+        image/*) image "$f" "$w" "$h" "$x" "$y" ;;
+        video/*) video "$f" "$w" "$h" "$x" "$y" ;;
+        *opendocument*) run odt2txt "$f" ;;
+        */markdown) run lowdown -Tterm "$f" ;;
+        */html) run lynx -dump "$f" ;;
+        *) return 1 ;;
+    esac
+}
+
 CACHE="$HOME/.cache/lf/thumbnail-$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | awk '{print $1}')"
-
-# We set the desktop to gnome to force usage of `gio` over `file` for better detection
-case "$(env XDG_CURRENT_DESKTOP=GNOME xdg-mime query filetype "$1")" in
-*/x-bzip-compressed-tar | */x-compressed-tar | */x-xz-compressed-tar) run als -- "$1" ;;
-*/x-7z-compressed | */vnd.rar | */x-tar | */zip | */x-java-archive | */x-xz) run 7z l "$1" | sed 1,11d ;;
-*/x-cd-image) run iso-info --no-header -l "$1" ;;
-*/x-bittorrent) run transmission-show "$1" ;;
-*/vnd.sun.xml.writer) run odt2txt "$1" ;;
-*/msword) run catdoc "$1" ;;
-*/vnd.openxmlformats-officedocument.wordprocessingml.document) run docx2txt <"$1" ;;
-*/vnd.ms-excel) run ssconvert --export-type=Gnumeric_stf:stf_csv "$1" "fd://1" | batorcat --language=csv ;;
-*/vnd.openxmlformats-officedocument.spreadsheetml.sheet) run ssconvert --export-type=Gnumeric_stf:stf_csv "$1" "fd://1" | batorcat --language=csv ;;
-*/epub+zip)
-	[ ! -f "$CACHE" ] && run epub-thumbnailer "$1" "$CACHE" 1024
-	image "$CACHE" "$2" "$3" "$4" "$5"
-	;;
-*/pgp-encrypted) run gpg -d -- "$1" ;;
-*/pkix-cert) run openssl x509 -text -noout -in "$1" ;;
-image/svg+xml)
-	[ ! -f "$CACHE" ] && run inkscape --convert-dpi-method=none -o "$CACHE" --export-overwrite -D --export-png-color-mode=RGBA_16 "$1"
-	image $CACHE "$2" "$3" "$4" "$5"
-	;;
-image/*) image "$1" "$2" "$3" "$4" "$5" ;;
-video/*) video "$1" "$2" "$3" "$4" "$5" ;;
-*opendocument*) run odt2txt "$1" ;;
-*/markdown) run lowdown -Tterm "$1" ;;
-*/html) run lynx -dump "$1" ;;
-text/* | */json | */schema+json | */xml | */javascript) batorcat "$1" "$2" ;;
-*/pdf)
-	[ ! -f "${CACHE}.jpg" ] && run pdftoppm -jpeg -f 1 -singlefile "$1" "$CACHE"
-	image "${CACHE}.jpg" "$2" "$3" "$4" "$5"
-	;;
+case $(file -b "$f") in
+    *ascii* | *utf*) batorcat "$f" "$w";;
 esac
+mimetest "$(env XDG_CURRENT_DESKTOP=GNOME xdg-mime query filetype "$f")" && exit
+mimetest "$(xdg-mime query filetype "$f")" && exit 0
 
-xdg-mime query filetype "$1"
+env XDG_CURRENT_DESKTOP=GNOME xdg-mime query filetype "$1"
 mediainfo "$1"
 
 exit 1