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#!/bin/bash
# This script is called whenever you preview a file.
# Its output is used as the preview. 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)
# NEVER make this script interactive. (by starting mplayer or something)
# 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 | 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="$3" # Height of the preview pane (number of fitting characters)
# Find out something about the file:
mimetype=$(file --mime-type -Lb "$path")
extension=$(echo "$path" | grep '\.' | grep -o '[^.]\+$')
# Other useful stuff
maxln=200 # print up to $maxln lines
function have { type -P "$1" > /dev/null; } # test if program is installed
case "$extension" in
# Archive extensions:
7z|a|ace|alz|arc|arj|bz|bz2|cab|cpio|gz|jar|lha|lz|lzh|lzma|lzo\
|rar|rpm|rz|t7z|tar|tbz|tbz2|tgz|tlz|txz|tZ|tzo|war|xz|Z|zip)
atool -l "$path" | head -n $maxln && exit 3
exit 1;;
pdf)
pdftotext "$path" | head -n $maxln && exit 3
exit 1;;
# HTML Pages:
htm|html|xhtml)
have lynx && lynx -dump "$path" | head -n $maxln && exit 5
have elinks && elinks -dump "$path" | head -n $maxln && exit 5
;; # fall back to highlight/cat if theres no lynx/elinks
esac
case "$mimetype" in
# Syntax highlight for text files:
text/* | */xml)
(highlight --ansi "$path" || cat "$path") | head -n $maxln
exit 5;;
# Ascii-previews of images:
image/*)
img2txt --gamma=0.6 --width="$width" "$path" && exit 4 || exit 1;;
esac
exit 1
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