From a2d716606e1803eed0cf25dfc08d4c79ebdc8498 Mon Sep 17 00:00:00 2001
From: Luke Smith <luke@lukesmith.xyz>
Date: Sat, 12 Mar 2022 16:44:11 -0500
Subject: [PATCH] scope-lol

---
 .config/lf/scope | 67 ++++++++++++++++++++++--------------------------
 1 file changed, 30 insertions(+), 37 deletions(-)

diff --git a/.config/lf/scope b/.config/lf/scope
index d924019..a6ff3db 100755
--- a/.config/lf/scope
+++ b/.config/lf/scope
@@ -1,51 +1,44 @@
-#!/bin/bash
+#!/bin/sh
+
+# File preview handler for lf.
 
 set -C -f
-#IFS=$'\n'
 IFS="$(printf '%b_' '\n')"; IFS="${IFS%_}"
 
-# ANSI color codes are supported.
-# STDIN is disabled, so interactive scripts won't work properly
-
-# This script is considered a configuration file and must be updated manually.
-
-# Meanings of exit codes:
-# code | meaning    | action of ranger
-# -----+------------+-------------------------------------------
-# 0    | success    | Display stdout as preview
-# 1    | no preview | Display no preview at all
-# 2    | plain text | Display the plain content of the file
-
-# Script arguments
-FILE_PATH="${1}"         # Full path of the highlighted file
-
-#FILE_EXTENSION="${FILE_PATH##*.}"
-#FILE_EXTENSION_LOWER=$(echo ${FILE_EXTENSION} | tr '[:upper:]' '[:lower:]')
-
-# Settings
-export HIGHLIGHT_SIZE_MAX=262143  # 256KiB
-export HIGHLIGHT_TABWIDTH=8
-export HIGHLIGHT_STYLE='pablo'
-
 image() {
 	if [ -n "$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"
-		exit 1
 	else
 		mediainfo "$1"
 	fi
 }
-CACHE="$HOME/.cache/lf/thumbnail.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | awk '{print $1}'))"
 
-case "$(file --dereference --brief --mime-type -- "${FILE_PATH}")" in
-	image/*) image "$FILE_PATH" "$2" "$3" "$4" "$5" ;;
-	text/html) lynx -display_charset=utf-8 -dump "${FILE_PATH}"  ;;
-	text/troff) man ./ "${FILE_PATH}" | col -b ;;
-	text/* | */xml) bat -f "${FILE_PATH}" ;;
-	application/zip) atool --list -- "${FILE_PATH}" ;;
-        video/* | audio/* | application/octet-stream) mediainfo "${FILE_PATH}" || exit 1;;
-        */pdf) pdftotext -l 10 -nopgbrk -q -- "${FILE_PATH}" - ;;
-        *opendocument*) odt2txt "${FILE_PATH}" ;;
-	application/pgp-encrypted) gpg -d -- "${FILE_PATH}" ;;
+ifub() {
+	[ -n "$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) bat --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