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#!/usr/bin/env bash
set -o noclobber -o noglob -o nounset -o pipefail
IFS=$'\n'
## If the option `use_preview_script` is set to `true`,
## then this script will be called and its output will be displayed in ranger.
## ANSI color codes are supported.
## STDIN is disabled, so interactive scripts won't work properly
## This script is considered a configuration file and must be updated manually.
## It will be left untouched if you upgrade ranger.
## Because of some automated testing we do on the script #'s for comments need
## to be doubled up. Code that is commented out, because it's an alternative for
## example, gets only one #.
## Meanings of exit codes:
## code | meaning | action of ranger
## -----+------------+-------------------------------------------
## 0 | success | Display stdout as preview
## 1 | no preview | Display no preview at all
## 2 | plain text | Display the plain content of the file
## 3 | fix width | Don't reload when width changes
## 4 | fix height | Don't reload when height changes
## 5 | fix both | Don't ever reload
## 6 | image | Display the image `$IMAGE_CACHE_PATH` points to as an image preview
## 7 | image | Display the file directly as an image
FILE_PATH=""
PREVIEW_IMAGE_ENABLED=0
PREVIEW_WIDTH=10
PREVIEW_HEIGHT=10
PREVIEW_X_COORD=0
PREVIEW_Y_COORD=0
IMAGE_CACHE_PATH=""
# echo "$@"
while [ "$#" -gt 0 ]; do
case "$1" in
"--path")
shift
FILE_PATH="$1"
;;
"--preview-width")
shift
PREVIEW_WIDTH="$1"
;;
"--preview-height")
shift
PREVIEW_HEIGHT="$1"
;;
"--x-coord")
shift
PREVIEW_X_COORD="$1"
;;
"--y-coord")
shift
PREVIEW_Y_COORD="$1"
;;
"--preview-images")
shift
PREVIEW_IMAGE_ENABLED="$1"
;;
"--image-cache")
shift
IMAGE_CACHE_PATH="$1"
;;
esac
shift
done
FILE_EXTENSION="${FILE_PATH##*.}"
FILE_EXTENSION_LOWER="$(printf "%s" "${FILE_EXTENSION}" | tr '[:upper:]' '[:lower:]')"
MIMETYPE=$(file --mime-type -Lb "${FILE_PATH}")
## Settings
HIGHLIGHT_SIZE_MAX=262143 # 256KiB
HIGHLIGHT_TABWIDTH="${HIGHLIGHT_TABWIDTH:-8}"
HIGHLIGHT_STYLE="${HIGHLIGHT_STYLE:-pablo}"
HIGHLIGHT_OPTIONS="--replace-tabs=${HIGHLIGHT_TABWIDTH} --style=${HIGHLIGHT_STYLE} ${HIGHLIGHT_OPTIONS:-}"
PYGMENTIZE_STYLE="${PYGMENTIZE_STYLE:-autumn}"
OPENSCAD_IMGSIZE="${RNGR_OPENSCAD_IMGSIZE:-1000,1000}"
OPENSCAD_COLORSCHEME="${RNGR_OPENSCAD_COLORSCHEME:-Tomorrow Night}"
handle_extension() {
case "${FILE_EXTENSION_LOWER}" in
## Archive
a|ace|alz|arc|arj|bz|bz2|cab|cpio|deb|gz|jar|lha|lz|lzh|lzma|lzo|\
rpm|rz|t7z|tar|tbz|tbz2|tgz|tlz|txz|tZ|tzo|war|xpi|xz|Z|zip)
atool --list -- "${FILE_PATH}" && exit 5
bsdtar --list --file "${FILE_PATH}" && exit 5
exit 1;;
rar)
## Avoid password prompt by providing empty password
unrar lt -p- -- "${FILE_PATH}" && exit 5
exit 1;;
7z)
## Avoid password prompt by providing empty password
7z l -p -- "${FILE_PATH}" && exit 5
exit 1;;
## PDF
## pdf)
## Preview as text conversion
## pdftotext -l 10 -nopgbrk -q -- "${FILE_PATH}" - | \
## fmt -w "${PREVIEW_WIDTH}" && exit 5
## mutool draw -F txt -i -- "${FILE_PATH}" 1-10 | \
## fmt -w "${PREVIEW_WIDTH}" && exit 5
## exiftool "${FILE_PATH}" && exit 5
## exit 1;;
## BitTorrent
torrent)
transmission-show -- "${FILE_PATH}" && exit 5
exit 1;;
## OpenDocument
odt|ods|odp|sxw)
## Preview as text conversion
odt2txt "${FILE_PATH}" && exit 5
## Preview as markdown conversion
pandoc -s -t markdown -- "${FILE_PATH}" && exit 5
exit 1;;
## XLSX
xlsx)
## Preview as csv conversion
## Uses: https://github.com/dilshod/xlsx2csv
xlsx2csv -- "${FILE_PATH}" && exit 5
exit 1;;
## HTML
htm|html|xhtml)
## Preview as text conversion
w3m -dump "${FILE_PATH}" && exit 5
lynx -dump -- "${FILE_PATH}" && exit 5
elinks -dump "${FILE_PATH}" && exit 5
pandoc -s -t markdown -- "${FILE_PATH}" && exit 5
;;
## JSON
json|ipynb)
jq --color-output . "${FILE_PATH}" && exit 5
python -m json.tool -- "${FILE_PATH}" && exit 5
;;
## Direct Stream Digital/Transfer (DSDIFF) and wavpack aren't detected
## by file(1).
dff|dsf|wv|wvc)
mediainfo "${FILE_PATH}" && exit 5
exiftool "${FILE_PATH}" && exit 5
;; # Continue with next handler on failure
esac
}
handle_image() {
## Size of the preview if there are multiple options or it has to be
## rendered from vector graphics. If the conversion program allows
## specifying only one dimension while keeping the aspect ratio, the width
## will be used.
local DEFAULT_SIZE="40x30"
local mimetype="${1}"
case "${mimetype}" in
## Image
image/*)
# kitty +kitten icat --clear
kitty +kitten icat \
--transfer-mode file \
--place "${PREVIEW_WIDTH}x${PREVIEW_HEIGHT}@${PREVIEW_X_COORD}x${PREVIEW_Y_COORD}" \
"${FILE_PATH}"
exit 7
;;
esac
}
handle_mime() {
local mimetype="${1}"
case "${mimetype}" in
## RTF and DOC
text/rtf|*msword)
## Preview as text conversion
## note: catdoc does not always work for .doc files
## catdoc: http://www.wagner.pp.ru/~vitus/software/catdoc/
catdoc -- "${FILE_PATH}" && exit 5
exit 1;;
## DOCX, ePub, FB2 (using markdown)
## You might want to remove "|epub" and/or "|fb2" below if you have
## uncommented other methods to preview those formats
*wordprocessingml.document|*/epub+zip|*/x-fictionbook+xml)
## Preview as markdown conversion
pandoc -s -t markdown -- "${FILE_PATH}" && exit 5
exit 1;;
## E-mails
message/rfc822)
## Parsing performed by mu: https://github.com/djcb/mu
mu view -- "${FILE_PATH}" && exit 5
exit 1;;
## XLS
*ms-excel)
## Preview as csv conversion
## xls2csv comes with catdoc:
## http://www.wagner.pp.ru/~vitus/software/catdoc/
xls2csv -- "${FILE_PATH}" && exit 5
exit 1;;
## Text
text/* | */xml)
bat --color=always --paging=never \
--style=plain \
--terminal-width="${PREVIEW_WIDTH}" \
"${FILE_PATH}" && exit 5
exit 2;;
## DjVu
image/vnd.djvu)
## Preview as text conversion (requires djvulibre)
djvutxt "${FILE_PATH}" | fmt -w "${PREVIEW_WIDTH}" && exit 5
exiftool "${FILE_PATH}" && exit 5
exit 1;;
## Image
image/*)
## Preview as text conversion
# img2txt --gamma=0.6 --width="${PREVIEW_WIDTH}" -- "${FILE_PATH}" && exit 4
exiftool "${FILE_PATH}" && exit 5
exit 1;;
## Video and audio
## video/* | audio/*)
## mediainfo "${FILE_PATH}" && exit 5
## exiftool "${FILE_PATH}" && exit 5
## exit 1;;
esac
}
handle_fallback() {
# echo '----- File Type Classification -----' && file --dereference --brief -- "${FILE_PATH}" && exit 5
exit 1
}
MIMETYPE="$( file --dereference --brief --mime-type -- "${FILE_PATH}" )"
if [[ "${PREVIEW_IMAGE_ENABLED}" -eq 1 ]]; then
handle_image "${MIMETYPE}"
fi
handle_extension
handle_mime "${MIMETYPE}"
handle_fallback
exit 1
|
