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- #!/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" "$cached" && exit 6 || exit 1;;
- # Image previews for image files. w3mimgdisplay will be called for all
- # image files (unless overriden as above), but might fail for
- # unsupported types.
- image/*)
- exit 7;;
- # Image preview for video, disabled by default.:
- video/*)
- ffmpegthumbnailer -i "$path" -o "$cached" -s 0 && exit 6 || exit 1;;
- esac
- fi
-
- case "$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;;
- # Image preview for videos, disabled by default:
- video/*)
- ffmpegthumbnailer -i "$path" -o "$cached" -s 0 && exit 6 || 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
-
- exit 1
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