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134 lines
5.6 KiB
134 lines
5.6 KiB
#!/usr/bin/env sh |
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# ranger supports enhanced previews. If the option "use_preview_script" |
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# is set to True and this file exists, this script will be called and its |
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# output is displayed in ranger. ANSI color codes are supported. |
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# NOTES: This script is considered a configuration file. If you upgrade |
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# ranger, it will be left untouched. (You must update it yourself.) |
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# Also, ranger disables STDIN here, so interactive scripts won't work properly |
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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 | success. display stdout as preview |
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# 1 | no preview | failure. 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 | success. Don't reload when width changes |
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# 4 | fix height | success. Don't reload when height changes |
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# 5 | fix both | success. Don't ever reload |
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# 6 | image | success. display the image $cached points to as an image preview |
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# 7 | image | success. display the file directly as an image |
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# Meaningful aliases for arguments: |
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path="$1" # Full path of the selected file |
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width="$2" # Width of the preview pane (number of fitting characters) |
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height="$3" # Height of the preview pane (number of fitting characters) |
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cached="$4" # Path that should be used to cache image previews |
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preview_images="$5" # "True" if image previews are enabled, "False" otherwise. |
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maxln=200 # Stop after $maxln lines. Can be used like ls | head -n $maxln |
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# Find out something about the file: |
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mimetype=$(file --mime-type -Lb "$path") |
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extension=$(/bin/echo "${path##*.}" | awk '{print tolower($0)}') |
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# Functions: |
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# runs a command and saves its output into $output. Useful if you need |
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# the return value AND want to use the output in a pipe |
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try() { output=$(eval '"$@"'); } |
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# writes the output of the previously used "try" command |
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dump() { /bin/echo "$output"; } |
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# a common post-processing function used after most commands |
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trim() { head -n "$maxln"; } |
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# wraps highlight to treat exit code 141 (killed by SIGPIPE) as success |
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safepipe() { "$@"; test $? = 0 -o $? = 141; } |
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# Image previews, if enabled in ranger. |
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if [ "$preview_images" = "True" ]; then |
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case "$mimetype" in |
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# Image previews for SVG files, disabled by default. |
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###image/svg+xml) |
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### convert "$path" "$cached" && exit 6 || exit 1;; |
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# Image previews for image files. w3mimgdisplay will be called for all |
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# image files (unless overriden as above), but might fail for |
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# unsupported types. |
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image/svg+xml) |
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inkscape -e "${cached//.png}" "$path" && exit 6;; |
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image/vnd.adobe.photoshop) |
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#echo $cached |
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convert "$path" -background white -flatten "$cached" |
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exit 6 |
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;; |
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image/*) |
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exit 7;; |
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# Image preview for video, disabled by default.: |
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video/*) |
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ffmpegthumbnailer -i "$path" -o "$cached" -s 0 && exit 6 || exit 1;; |
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application/pdf) |
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pdftoppm -jpeg -singlefile "$path" "${cached//.jpg}" && exit 6;; |
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esac |
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fi |
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case "$extension" in |
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# Archive extensions: |
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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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try als "$path" && { dump | trim; exit 0; } |
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try acat "$path" && { dump | trim; exit 3; } |
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try bsdtar -lf "$path" && { dump | trim; exit 0; } |
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exit 1;; |
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rar) |
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# avoid password prompt by providing empty password |
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try unrar -p- lt "$path" && { dump | trim; exit 0; } || exit 1;; |
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7z) |
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# avoid password prompt by providing empty password |
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try 7z -p l "$path" && { dump | trim; exit 0; } || exit 1;; |
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# PDF documents: |
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pdf) |
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try pdftotext -l 10 -nopgbrk -q "$path" - && \ |
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{ dump | trim | fmt -s -w $width; exit 0; } || exit 1;; |
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# BitTorrent Files |
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torrent) |
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try transmission-show "$path" && { dump | trim; exit 5; } || exit 1;; |
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# ODT Files |
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#odt|ods|odp|sxw) |
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# try odt2txt "$path" && { dump | trim; exit 5; } || exit 1;; |
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# Try to get the text out of a document using libreoffice |
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odt|ods|odp|sxw|doc|docx|xls|xlsx|ppt|pptx) |
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try libreoffice --cat "$path" && { dump | trim | fmt -s -w $width; exit 0; } || exit 1;; |
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# HTML Pages: |
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htm|html|xhtml) |
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try w3m -dump "$path" && { dump | trim | fmt -s -w $width; exit 4; } |
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try lynx -dump "$path" && { dump | trim | fmt -s -w $width; exit 4; } |
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try elinks -dump "$path" && { dump | trim | fmt -s -w $width; exit 4; } |
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;; # fall back to highlight/cat if the text browsers fail |
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esac |
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case "$mimetype" in |
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# Syntax highlight for text files: |
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text/* | */xml) |
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if [ "$(tput colors)" -ge 256 ]; then |
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pygmentize_format=terminal256 |
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highlight_format=xterm256 |
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else |
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pygmentize_format=terminal |
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highlight_format=ansi |
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fi |
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bat --style="numbers" --color always "$path" && { dump | trim; exit 5; } |
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try safepipe highlight --out-format=${highlight_format} "$path" && { dump | trim; exit 5; } |
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try safepipe pygmentize -f ${pygmentize_format} "$path" && { dump | trim; exit 5; } |
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exit 2;; |
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# Ascii-previews of images: |
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image/*) |
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img2txt --gamma=0.6 --width="$width" "$path" && exit 4 || exit 1;; |
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# Display information about media files: |
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video/* | audio/*) |
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exiftool "$path" && exit 5 |
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# Use sed to remove spaces so the output fits into the narrow window |
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try mediainfo "$path" && { dump | trim | sed 's/ \+:/: /;'; exit 5; } || exit 1;; |
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esac |
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exit 1
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