marc
5 years ago
2 changed files with 217 additions and 1 deletions
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#!/usr/bin/env bash |
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set -o noclobber -o noglob -o nounset -o pipefail |
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IFS=$'\n' |
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# If the option `use_preview_script` is set to `true`, |
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# then this script will be called and its output will be displayed in ranger. |
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# ANSI color codes are supported. |
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# STDIN is disabled, so interactive scripts won't work properly |
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# This script is considered a configuration file and must be updated manually. |
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# It will be left untouched if you upgrade ranger. |
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# Meanings of exit codes: |
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# code | meaning | action of ranger |
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# -----+------------+------------------------------------------- |
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# 0 | success | Display stdout as preview |
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# 1 | no preview | Display no preview at all |
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# 2 | plain text | Display the plain content of the file |
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# 3 | fix width | Don't reload when width changes |
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# 4 | fix height | Don't reload when height changes |
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# 5 | fix both | Don't ever reload |
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# 6 | image | Display the image `$IMAGE_CACHE_PATH` points to as an image preview |
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# 7 | image | Display the file directly as an image |
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# Script arguments |
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FILE_PATH="${1}" # Full path of the highlighted file |
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PV_WIDTH="${2}" # Width of the preview pane (number of fitting characters) |
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PV_HEIGHT="${3}" # Height of the preview pane (number of fitting characters) |
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IMAGE_CACHE_PATH="${4}" # Full path that should be used to cache image preview |
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PV_IMAGE_ENABLED="${5}" # 'True' if image previews are enabled, 'False' otherwise. |
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FILE_EXTENSION="${FILE_PATH##*.}" |
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FILE_EXTENSION_LOWER=$(echo ${FILE_EXTENSION} | tr '[:upper:]' '[:lower:]') |
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# Settings |
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HIGHLIGHT_SIZE_MAX=262143 # 256KiB |
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HIGHLIGHT_TABWIDTH=8 |
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HIGHLIGHT_STYLE='pablo' |
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PYGMENTIZE_STYLE='autumn' |
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handle_extension() { |
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case "${FILE_EXTENSION_LOWER}" in |
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# Archive |
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a|ace|alz|arc|arj|bz|bz2|cab|cpio|deb|gz|jar|lha|lz|lzh|lzma|lzo|\ |
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rpm|rz|t7z|tar|tbz|tbz2|tgz|tlz|txz|tZ|tzo|war|xpi|xz|Z|zip) |
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atool --list -- "${FILE_PATH}" && exit 5 |
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bsdtar --list --file "${FILE_PATH}" && exit 5 |
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exit 1;; |
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rar) |
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# Avoid password prompt by providing empty password |
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unrar lt -p- -- "${FILE_PATH}" && exit 5 |
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exit 1;; |
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7z) |
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# Avoid password prompt by providing empty password |
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7z l -p -- "${FILE_PATH}" && exit 5 |
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exit 1;; |
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# PDF |
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pdf) |
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# Preview as text conversion |
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pdftotext -l 10 -nopgbrk -q -- "${FILE_PATH}" - | fmt -w ${PV_WIDTH} && exit 5 |
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mutool draw -F txt -i -- "${FILE_PATH}" 1-10 | fmt -w ${PV_WIDTH} && exit 5 |
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exiftool "${FILE_PATH}" && exit 5 |
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exit 1;; |
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# BitTorrent |
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torrent) |
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transmission-show -- "${FILE_PATH}" && exit 5 |
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exit 1;; |
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# OpenDocument |
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odt|ods|odp|sxw) |
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# Preview as text conversion |
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odt2txt "${FILE_PATH}" && exit 5 |
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exit 1;; |
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# HTML |
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htm|html|xhtml) |
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# Preview as text conversion |
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w3m -dump "${FILE_PATH}" && exit 5 |
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lynx -dump -- "${FILE_PATH}" && exit 5 |
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elinks -dump "${FILE_PATH}" && exit 5 |
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;; # Continue with next handler on failure |
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esac |
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} |
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handle_image() { |
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local mimetype="${1}" |
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case "${mimetype}" in |
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# SVG |
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# image/svg+xml) |
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# convert "${FILE_PATH}" "${IMAGE_CACHE_PATH}" && exit 6 |
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# exit 1;; |
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# Image |
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image/*) |
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local orientation |
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orientation="$( identify -format '%[EXIF:Orientation]\n' -- "${FILE_PATH}" )" |
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# If orientation data is present and the image actually |
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# needs rotating ("1" means no rotation)... |
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if [[ -n "$orientation" && "$orientation" != 1 ]]; then |
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# ...auto-rotate the image according to the EXIF data. |
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convert -- "${FILE_PATH}" -auto-orient "${IMAGE_CACHE_PATH}" && exit 6 |
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fi |
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# `w3mimgdisplay` will be called for all images (unless overriden as above), |
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# but might fail for unsupported types. |
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exit 7;; |
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# Video |
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video/*) |
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# Thumbnail |
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ffmpegthumbnailer -i "${FILE_PATH}" -o "${IMAGE_CACHE_PATH}" -s 0 && exit 6 |
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exit 1;; |
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# PDF |
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# application/pdf) |
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# pdftoppm -f 1 -l 1 \ |
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# -scale-to-x 1920 \ |
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# -scale-to-y -1 \ |
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# -singlefile \ |
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# -jpeg -tiffcompression jpeg \ |
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# -- "${FILE_PATH}" "${IMAGE_CACHE_PATH%.*}" \ |
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# && exit 6 || exit 1;; |
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# Preview archives using the first image inside. |
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# (Very useful for comic book collections for example.) |
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# application/zip|application/x-rar|application/x-7z-compressed|\ |
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# application/x-xz|application/x-bzip2|application/x-gzip|application/x-tar) |
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# local fn=""; local fe="" |
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# local zip=""; local rar=""; local tar=""; local bsd="" |
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# case "${mimetype}" in |
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# application/zip) zip=1 ;; |
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# application/x-rar) rar=1 ;; |
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# application/x-7z-compressed) ;; |
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# *) tar=1 ;; |
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# esac |
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# { [ "$tar" ] && fn=$(tar --list --file "${FILE_PATH}"); } || \ |
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# { fn=$(bsdtar --list --file "${FILE_PATH}") && bsd=1 && tar=""; } || \ |
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# { [ "$rar" ] && fn=$(unrar lb -p- -- "${FILE_PATH}"); } || \ |
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# { [ "$zip" ] && fn=$(zipinfo -1 -- "${FILE_PATH}"); } || return |
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# |
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# fn=$(echo "$fn" | python -c "import sys; import mimetypes as m; \ |
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# [ print(l, end='') for l in sys.stdin if \ |
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# (m.guess_type(l[:-1])[0] or '').startswith('image/') ]" |\ |
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# sort -V | head -n 1) |
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# [ "$fn" = "" ] && return |
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# [ "$bsd" ] && fn=$(printf '%b' "$fn") |
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# |
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# [ "$tar" ] && tar --extract --to-stdout \ |
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# --file "${FILE_PATH}" -- "$fn" > "${IMAGE_CACHE_PATH}" && exit 6 |
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# fe=$(echo -n "$fn" | sed 's/[][*?\]/\\\0/g') |
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# [ "$bsd" ] && bsdtar --extract --to-stdout \ |
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# --file "${FILE_PATH}" -- "$fe" > "${IMAGE_CACHE_PATH}" && exit 6 |
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# [ "$bsd" ] || [ "$tar" ] && rm -- "${IMAGE_CACHE_PATH}" |
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# [ "$rar" ] && unrar p -p- -inul -- "${FILE_PATH}" "$fn" > \ |
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# "${IMAGE_CACHE_PATH}" && exit 6 |
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# [ "$zip" ] && unzip -pP "" -- "${FILE_PATH}" "$fe" > \ |
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# "${IMAGE_CACHE_PATH}" && exit 6 |
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# [ "$rar" ] || [ "$zip" ] && rm -- "${IMAGE_CACHE_PATH}" |
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# ;; |
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esac |
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} |
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handle_mime() { |
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local mimetype="${1}" |
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case "${mimetype}" in |
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# Text |
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text/* | */xml) |
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# Syntax highlight |
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if [[ "$( stat --printf='%s' -- "${FILE_PATH}" )" -gt "${HIGHLIGHT_SIZE_MAX}" ]]; then |
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exit 2 |
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fi |
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if [[ "$( tput colors )" -ge 256 ]]; then |
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local pygmentize_format='terminal256' |
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local highlight_format='xterm256' |
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else |
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local pygmentize_format='terminal' |
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local highlight_format='ansi' |
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fi |
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highlight --replace-tabs="${HIGHLIGHT_TABWIDTH}" --out-format="${highlight_format}" \ |
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--style="${HIGHLIGHT_STYLE}" --force -- "${FILE_PATH}" && exit 5 |
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# pygmentize -f "${pygmentize_format}" -O "style=${PYGMENTIZE_STYLE}" -- "${FILE_PATH}" && exit 5 |
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exit 2;; |
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# Image |
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image/*) |
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# Preview as text conversion |
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# img2txt --gamma=0.6 --width="${PV_WIDTH}" -- "${FILE_PATH}" && exit 4 |
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exiftool "${FILE_PATH}" && exit 5 |
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exit 1;; |
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# Video and audio |
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video/* | audio/*) |
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mediainfo "${FILE_PATH}" && exit 5 |
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exiftool "${FILE_PATH}" && exit 5 |
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exit 1;; |
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esac |
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} |
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handle_fallback() { |
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echo '----- File Type Classification -----' && file --dereference --brief -- "${FILE_PATH}" && exit 5 |
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exit 1 |
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} |
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MIMETYPE="$( file --dereference --brief --mime-type -- "${FILE_PATH}" )" |
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if [[ "${PV_IMAGE_ENABLED}" == 'True' ]]; then |
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handle_image "${MIMETYPE}" |
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fi |
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handle_extension |
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handle_mime "${MIMETYPE}" |
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handle_fallback |
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exit 1 |
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