diff options
Diffstat (limited to 'File_Manager/ranger/scope.sh')
| -rwxr-xr-x | File_Manager/ranger/scope.sh | 459 |
1 files changed, 344 insertions, 115 deletions
diff --git a/File_Manager/ranger/scope.sh b/File_Manager/ranger/scope.sh index da7168e..f403ed8 100755 --- a/File_Manager/ranger/scope.sh +++ b/File_Manager/ranger/scope.sh @@ -1,121 +1,350 @@ -#!/usr/bin/env sh -# ranger supports enhanced previews. If the option "use_preview_script" -# is set to True and this file exists, this script will be called and its -# output is displayed in ranger. ANSI color codes are supported. - -# NOTES: This script is considered a configuration file. If you upgrade -# ranger, it will be left untouched. (You must update it yourself.) -# Also, ranger disables STDIN here, so interactive scripts won't work properly - -# Meanings of exit codes: -# code | meaning | action of ranger -# -----+------------+------------------------------------------- -# 0 | success | success. display stdout as preview -# 1 | no preview | failure. display no preview at all -# 2 | plain text | display the plain content of the file -# 3 | fix width | success. Don't reload when width changes -# 4 | fix height | success. Don't reload when height changes -# 5 | fix both | success. Don't ever reload -# 6 | image | success. display the image $cached points to as an image preview -# 7 | image | success. display the file directly as an image - -# Meaningful aliases for arguments: -path="$1" # Full path of the selected file -width="$2" # Width of the preview pane (number of fitting characters) -height="$3" # Height of the preview pane (number of fitting characters) -cached="$4" # Path that should be used to cache image previews -preview_images="$5" # "True" if image previews are enabled, "False" otherwise. - -maxln=200 # Stop after $maxln lines. Can be used like ls | head -n $maxln - -# Find out something about the file: -mimetype=$(file --mime-type -Lb "$path") -extension=$(/bin/echo "${path##*.}" | awk '{print tolower($0)}') - -# Functions: -# runs a command and saves its output into $output. Useful if you need -# the return value AND want to use the output in a pipe -try() { output=$(eval '"$@"'); } - -# writes the output of the previously used "try" command -dump() { /bin/echo "$output"; } - -# a common post-processing function used after most commands -trim() { head -n "$maxln"; } - -# wraps highlight to treat exit code 141 (killed by SIGPIPE) as success -safepipe() { "$@"; test $? = 0 -o $? = 141; } - -# Image previews, if enabled in ranger. -if [ "$preview_images" = "True" ]; then - case "$mimetype" in - # Image previews for SVG files, disabled by default. - ###image/svg+xml) - ### convert "$path" "$cached" && exit 6 || exit 1;; - # Image previews for image files. w3mimgdisplay will be called for all - # image files (unless overriden as above), but might fail for - # unsupported types. +#!/usr/bin/env bash + +set -o noclobber -o noglob -o nounset -o pipefail +IFS=$'\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 `$IMAGE_CACHE_PATH` points to as an image preview +## 7 | image | Display the file directly as an image + +## Script arguments +FILE_PATH="${1}" # Full path of the highlighted file +PV_WIDTH="${2}" # Width of the preview pane (number of fitting characters) +## shellcheck disable=SC2034 # PV_HEIGHT is provided for convenience and unused +PV_HEIGHT="${3}" # Height of the preview pane (number of fitting characters) +IMAGE_CACHE_PATH="${4}" # Full path that should be used to cache image preview +PV_IMAGE_ENABLED="${5}" # 'True' if image previews are enabled, 'False' otherwise. + +FILE_EXTENSION="${FILE_PATH##*.}" +FILE_EXTENSION_LOWER="$(printf "%s" "${FILE_EXTENSION}" | tr '[:upper:]' '[:lower:]')" + +## Settings +HIGHLIGHT_SIZE_MAX=262143 # 256KiB +HIGHLIGHT_TABWIDTH=${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 "${PV_WIDTH}" && exit 5 + mutool draw -F txt -i -- "${FILE_PATH}" 1-10 | \ + fmt -w "${PV_WIDTH}" && exit 5 + exiftool "${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) + 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="1920x1080" + + local mimetype="${1}" + case "${mimetype}" in + ## SVG + # image/svg+xml|image/svg) + # convert -- "${FILE_PATH}" "${IMAGE_CACHE_PATH}" && exit 6 + # exit 1;; + + ## DjVu + # image/vnd.djvu) + # ddjvu -format=tiff -quality=90 -page=1 -size="${DEFAULT_SIZE}" \ + # - "${IMAGE_CACHE_PATH}" < "${FILE_PATH}" \ + # && exit 6 || exit 1;; + + ## Image image/*) + local orientation + orientation="$( identify -format '%[EXIF:Orientation]\n' -- "${FILE_PATH}" )" + ## If orientation data is present and the image actually + ## needs rotating ("1" means no rotation)... + if [[ -n "$orientation" && "$orientation" != 1 ]]; then + ## ...auto-rotate the image according to the EXIF data. + convert -- "${FILE_PATH}" -auto-orient "${IMAGE_CACHE_PATH}" && exit 6 + fi + + ## `w3mimgdisplay` will be called for all images (unless overriden + ## as above), but might fail for unsupported types. exit 7;; - # Image preview for video, disabled by default.: - video/*) - ffmpegthumbnailer -i "$path" -o "$cached" -s 0 && exit 6 || exit 1;; + + ## Video + # video/*) + # # Thumbnail + # ffmpegthumbnailer -i "${FILE_PATH}" -o "${IMAGE_CACHE_PATH}" -s 0 && exit 6 + # exit 1;; + + ## PDF + # application/pdf) + # pdftoppm -f 1 -l 1 \ + # -scale-to-x "${DEFAULT_SIZE%x*}" \ + # -scale-to-y -1 \ + # -singlefile \ + # -jpeg -tiffcompression jpeg \ + # -- "${FILE_PATH}" "${IMAGE_CACHE_PATH%.*}" \ + # && exit 6 || exit 1;; + + + ## ePub, MOBI, FB2 (using Calibre) + # application/epub+zip|application/x-mobipocket-ebook|\ + # application/x-fictionbook+xml) + # # ePub (using https://github.com/marianosimone/epub-thumbnailer) + # epub-thumbnailer "${FILE_PATH}" "${IMAGE_CACHE_PATH}" \ + # "${DEFAULT_SIZE%x*}" && exit 6 + # ebook-meta --get-cover="${IMAGE_CACHE_PATH}" -- "${FILE_PATH}" \ + # >/dev/null && exit 6 + # exit 1;; + + ## Font + application/font*|application/*opentype) + preview_png="/tmp/$(basename "${IMAGE_CACHE_PATH%.*}").png" + if fontimage -o "${preview_png}" \ + --pixelsize "120" \ + --fontname \ + --pixelsize "80" \ + --text " ABCDEFGHIJKLMNOPQRSTUVWXYZ " \ + --text " abcdefghijklmnopqrstuvwxyz " \ + --text " 0123456789.:,;(*!?') ff fl fi ffi ffl " \ + --text " The quick brown fox jumps over the lazy dog. " \ + "${FILE_PATH}"; + then + convert -- "${preview_png}" "${IMAGE_CACHE_PATH}" \ + && rm "${preview_png}" \ + && exit 6 + else + exit 1 + fi + ;; + + ## Preview archives using the first image inside. + ## (Very useful for comic book collections for example.) + # application/zip|application/x-rar|application/x-7z-compressed|\ + # application/x-xz|application/x-bzip2|application/x-gzip|application/x-tar) + # local fn=""; local fe="" + # local zip=""; local rar=""; local tar=""; local bsd="" + # case "${mimetype}" in + # application/zip) zip=1 ;; + # application/x-rar) rar=1 ;; + # application/x-7z-compressed) ;; + # *) tar=1 ;; + # esac + # { [ "$tar" ] && fn=$(tar --list --file "${FILE_PATH}"); } || \ + # { fn=$(bsdtar --list --file "${FILE_PATH}") && bsd=1 && tar=""; } || \ + # { [ "$rar" ] && fn=$(unrar lb -p- -- "${FILE_PATH}"); } || \ + # { [ "$zip" ] && fn=$(zipinfo -1 -- "${FILE_PATH}"); } || return + # + # fn=$(echo "$fn" | python -c "import sys; import mimetypes as m; \ + # [ print(l, end='') for l in sys.stdin if \ + # (m.guess_type(l[:-1])[0] or '').startswith('image/') ]" |\ + # sort -V | head -n 1) + # [ "$fn" = "" ] && return + # [ "$bsd" ] && fn=$(printf '%b' "$fn") + # + # [ "$tar" ] && tar --extract --to-stdout \ + # --file "${FILE_PATH}" -- "$fn" > "${IMAGE_CACHE_PATH}" && exit 6 + # fe=$(echo -n "$fn" | sed 's/[][*?\]/\\\0/g') + # [ "$bsd" ] && bsdtar --extract --to-stdout \ + # --file "${FILE_PATH}" -- "$fe" > "${IMAGE_CACHE_PATH}" && exit 6 + # [ "$bsd" ] || [ "$tar" ] && rm -- "${IMAGE_CACHE_PATH}" + # [ "$rar" ] && unrar p -p- -inul -- "${FILE_PATH}" "$fn" > \ + # "${IMAGE_CACHE_PATH}" && exit 6 + # [ "$zip" ] && unzip -pP "" -- "${FILE_PATH}" "$fe" > \ + # "${IMAGE_CACHE_PATH}" && exit 6 + # [ "$rar" ] || [ "$zip" ] && rm -- "${IMAGE_CACHE_PATH}" + # ;; esac -fi -case "$extension" in - # Archive extensions: - a|ace|alz|arc|arj|bz|bz2|cab|cpio|deb|gz|jar|lha|lz|lzh|lzma|lzo|\ - rpm|rz|t7z|tar|tbz|tbz2|tgz|tlz|txz|tZ|tzo|war|xpi|xz|Z|zip) - try als "$path" && { dump | trim; exit 0; } - try acat "$path" && { dump | trim; exit 3; } - try bsdtar -lf "$path" && { dump | trim; exit 0; } - exit 1;; - rar) - # avoid password prompt by providing empty password - try unrar -p- lt "$path" && { dump | trim; exit 0; } || exit 1;; - 7z) - # avoid password prompt by providing empty password - try 7z -p l "$path" && { dump | trim; exit 0; } || exit 1;; - # PDF documents: - pdf) - try pdftotext -l 10 -nopgbrk -q "$path" - && \ - { dump | trim | fmt -s -w $width; exit 0; } || exit 1;; - # BitTorrent Files - torrent) - try transmission-show "$path" && { dump | trim; exit 5; } || exit 1;; - # ODT Files - odt|ods|odp|sxw) - try odt2txt "$path" && { dump | trim; exit 5; } || exit 1;; - # HTML Pages: - htm|html|xhtml) - try w3m -dump "$path" && { dump | trim | fmt -s -w $width; exit 4; } - try lynx -dump "$path" && { dump | trim | fmt -s -w $width; exit 4; } - try elinks -dump "$path" && { dump | trim | fmt -s -w $width; exit 4; } - ;; # fall back to highlight/cat if the text browsers fail -esac - -case "$mimetype" in - # Syntax highlight for text files: - text/* | */xml) - if [ "$(tput colors)" -ge 256 ]; then - pygmentize_format=terminal256 - highlight_format=xterm256 - else - pygmentize_format=terminal - highlight_format=ansi - fi - try safepipe highlight --out-format=${highlight_format} "$path" && { dump | trim; exit 5; } - try safepipe pygmentize -f ${pygmentize_format} "$path" && { dump | trim; exit 5; } - exit 2;; - # Ascii-previews of images: - image/*) - img2txt --gamma=0.6 --width="$width" "$path" && exit 4 || exit 1;; - # Display information about media files: - video/* | audio/*) - exiftool "$path" && exit 5 - # Use sed to remove spaces so the output fits into the narrow window - try mediainfo "$path" && { dump | trim | sed 's/ \+:/: /;'; exit 5; } || exit 1;; -esac + # openscad_image() { + # TMPPNG="$(mktemp -t XXXXXX.png)" + # openscad --colorscheme="${OPENSCAD_COLORSCHEME}" \ + # --imgsize="${OPENSCAD_IMGSIZE/x/,}" \ + # -o "${TMPPNG}" "${1}" + # mv "${TMPPNG}" "${IMAGE_CACHE_PATH}" + # } + + # case "${FILE_EXTENSION_LOWER}" in + # ## 3D models + # ## OpenSCAD only supports png image output, and ${IMAGE_CACHE_PATH} + # ## is hardcoded as jpeg. So we make a tempfile.png and just + # ## move/rename it to jpg. This works because image libraries are + # ## smart enough to handle it. + # csg|scad) + # openscad_image "${FILE_PATH}" && exit 6 + # ;; + # 3mf|amf|dxf|off|stl) + # openscad_image <(echo "import(\"${FILE_PATH}\");") && exit 6 + # ;; + # esac +} + +handle_mime() { + local mimetype="${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 -- "${FILE_PATH}" && exit 5 + exit 1;; + + ## XLS + *ms-excel) + ## Preview as csv conversion + ## xls2csv comes with catdoc: + ## http://www.wagner.pp.ru/~vitus/software/catdoc/ + xls2csv -- "${FILE_PATH}" && exit 5 + exit 1;; + + ## Text + text/* | */xml) + ## Syntax highlight + if [[ "$( stat --printf='%s' -- "${FILE_PATH}" )" -gt "${HIGHLIGHT_SIZE_MAX}" ]]; then + exit 2 + fi + if [[ "$( tput colors )" -ge 256 ]]; then + local pygmentize_format='terminal256' + local highlight_format='xterm256' + else + local pygmentize_format='terminal' + local highlight_format='ansi' + fi + env HIGHLIGHT_OPTIONS="${HIGHLIGHT_OPTIONS}" highlight \ + --out-format="${highlight_format}" \ + --force -- "${FILE_PATH}" && exit 5 + env COLORTERM=8bit bat --color=always --style="plain" \ + -- "${FILE_PATH}" && exit 5 + pygmentize -f "${pygmentize_format}" -O "style=${PYGMENTIZE_STYLE}"\ + -- "${FILE_PATH}" && exit 5 + exit 2;; + + ## DjVu + image/vnd.djvu) + ## Preview as text conversion (requires djvulibre) + djvutxt "${FILE_PATH}" | fmt -w "${PV_WIDTH}" && exit 5 + exiftool "${FILE_PATH}" && exit 5 + exit 1;; + + ## Image + image/*) + ## Preview as text conversion + # img2txt --gamma=0.6 --width="${PV_WIDTH}" -- "${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 [[ "${PV_IMAGE_ENABLED}" == 'True' ]]; then + handle_image "${MIMETYPE}" +fi +handle_extension +handle_mime "${MIMETYPE}" +handle_fallback exit 1 |