300 lines
11 KiB
Bash
Executable File
300 lines
11 KiB
Bash
Executable File
#!/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="$(printf "%s" "${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=${HIGHLIGHT_TABWIDTH:-8}
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HIGHLIGHT_STYLE=${HIGHLIGHT_STYLE:-pablo}
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HIGHLIGHT_OPTIONS="--replace-tabs=${HIGHLIGHT_TABWIDTH} --style=${HIGHLIGHT_STYLE} ${HIGHLIGHT_OPTIONS:-}"
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PYGMENTIZE_STYLE=${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 "${FILE_PATH}" && exit 5
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;; # Continue with next handler on failure
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# JSON
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json)
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jq --color-output . "${FILE_PATH}" && exit 5
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python -m json.tool -- "${FILE_PATH}" && exit 5
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;;
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esac
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}
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handle_image() {
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# Size of the preview if there are multiple options or it has to be rendered
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# from vector graphics. If the conversion program allows specifying only one
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# dimension while keeping the aspect ratio, the width will be used.
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local DEFAULT_SIZE="1920x1080"
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local mimetype="${1}"
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case "${FILE_EXTENSION_LOWER}" in
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# Comic book previews
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cbz|cbr|epub)
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comicthumb.py "${FILE_PATH}" "${IMAGE_CACHE_PATH}" 512 > /dev/null 2>&1 && exit 6
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exit 1;;
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esac
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case "${mimetype}" in
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# SVG
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image/svg+xml|image/svg)
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convert -- "${FILE_PATH}" "${IMAGE_CACHE_PATH}" && exit 6
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exit 1;;
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# DjVu
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# image/vnd.djvu)
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# ddjvu -format=tiff -quality=90 -page=1 -size="${DEFAULT_SIZE}" \
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# - "${IMAGE_CACHE_PATH}" < "${FILE_PATH}" \
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# && exit 6 || exit 1;;
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# Image
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image/*)
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local orientation
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orientation="$( 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 "${IMAGE_CACHE_PATH}" -s 0 && exit 6
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exit 1;;
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# PDF
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application/pdf)
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pdftoppm -f 1 -l 1 \
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-scale-to-x "${DEFAULT_SIZE%x*}" \
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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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# ePub, MOBI, FB2 (using Calibre)
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# application/epub+zip|application/x-mobipocket-ebook|application/x-fictionbook+xml)
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# ebook-meta --get-cover="${IMAGE_CACHE_PATH}" -- "${FILE_PATH}" > /dev/null \
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# && exit 6 || exit 1;;
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# ePub (using <https://github.com/marianosimone/epub-thumbnailer>)
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# application/epub+zip)
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# epub-thumbnailer \
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# "${FILE_PATH}" "${IMAGE_CACHE_PATH}" "${DEFAULT_SIZE%x*}" \
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# && exit 6 || exit 1;;
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# Font
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application/font*|application/*opentype)
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preview_png="/tmp/$(basename "${IMAGE_CACHE_PATH%.*}").png"
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if fontimage -o "${preview_png}" \
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--pixelsize "120" \
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--fontname \
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--pixelsize "80" \
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--text " ABCDEFGHIJKLMNOPQRSTUVWXYZ " \
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--text " abcdefghijklmnopqrstuvwxyz " \
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--text " 0123456789.:,;(*!?') ff fl fi ffi ffl " \
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--text " The quick brown fox jumps over the lazy dog. " \
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"${FILE_PATH}";
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then
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convert -- "${preview_png}" "${IMAGE_CACHE_PATH}" \
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&& rm "${preview_png}" \
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&& exit 6
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else
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exit 1
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fi
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;;
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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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env HIGHLIGHT_OPTIONS="${HIGHLIGHT_OPTIONS}" highlight \
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--out-format="${highlight_format}" \
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--force -- "${FILE_PATH}" && exit 5
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pygmentize -f "${pygmentize_format}" -O "style=${PYGMENTIZE_STYLE}"\
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-- "${FILE_PATH}" && exit 5
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exit 2;;
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# DjVu
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image/vnd.djvu)
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# Preview as text conversion (requires djvulibre)
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djvutxt "${FILE_PATH}" | 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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# 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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allow_large() {
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case "${FILE_EXTENSION_LOWER}" in
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avi|mkv|flv|mp4|m4v)
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echo 1;;
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cbz|cbr|cb7)
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echo 1;;
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*)
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echo 0;;
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esac
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}
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size=$(stat -c%s "${FILE_PATH}") # file size in bytes
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override=$(allow_large)
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if [ $size -le 10485760 ] || [ $override == 1 ]; then
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handle_extension
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#MIMETYPE="$( file --dereference --brief --mime-type -- "${FILE_PATH}" )"
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MIMETYPE="$(xdg-mime query filetype "${FILE_PATH}" )"
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if [[ "${PV_IMAGE_ENABLED}" == 'True' ]]; then
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handle_image "${MIMETYPE}"
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fi
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handle_mime "${MIMETYPE}"
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fi
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handle_fallback
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exit 1
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