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authorVasil Zlatanov <vasil.zlatanov@gmail.com>2015-08-18 02:38:33 +0200
committerVasil Zlatanov <vasil.zlatanov@gmail.com>2015-08-18 02:38:33 +0200
commit6efac1a12c8ab0b7d96a8d342fbd74fce35e8c42 (patch)
tree93ebfb332b3a231931fe1b1276632bdaa33fa6e4 /config/ranger/scope.sh
parentc021038355b6773ab13dae92327fda50c366395f (diff)
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Organise everything systematically.
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-rwxr-xr-xconfig/ranger/scope.sh84
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diff --git a/config/ranger/scope.sh b/config/ranger/scope.sh
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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
-
-# 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)
-
-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 "$path")
-extension=${path##*.}
-
-# 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 '"$@"'); }
-
-# writes the output of the previouosly used "try" command
-dump() { echo "$output"; }
-
-# a common post-processing function used after most commands
-trim() { head -n "$maxln"; }
-
-# wraps highlight to treat exit code 141 (killed by SIGPIPE) as success
-highlight() { command highlight "$@"; test $? = 0 -o $? = 141; }
-
-case "$extension" in
- # Archive extensions:
- 7z|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 "$path" && { dump | trim; exit 0; }
- exit 1;;
- rar)
- try unrar -p- lt "$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;;
- # 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)
- try highlight --out-format=ansi "$path" && { dump | trim; exit 5; } || exit 2;;
- # Ascii-previews of images:
- image/*)
- img2txt --gamma=0.6 --width="$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
-
-exit 1