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|
#!/bin/bash
#
# lessfile/lesspipe
# $Id: lessopen,v 1.4 1998/05/12 09:37:46 torin Exp $
#
# Less filter for viewing non text files.
#
# Written by: Behan Webster <behanw@pobox.com>
# Many Modifications by Darren Stalder
#
# combined lessfile and lesspipe to avoid duplication of decode stage
# shell is sure icky. I'm real tempted to rewrite the whole thing in Perl
#
# Unfortunately, this means that I have filename dependencies sprinkled
# throughout the code. If you don't want lessfile to be called that,
# you'll need to change the LESSFILE envar below.
#
# Usage: eval $(lessfile) or eval $(lesspipe)
#
# less passes in:
# $1 filename to be viewed with less (used by LESSOPEN)
# and possibly (if used by lessfile)
# $2 filename that was created during LESSOPEN
TMPDIR=${TMPDIR:-/tmp}
BASENAME=$(basename $0)
LESSFILE=lessfile
if [ $# -eq 1 ] ; then
# we were called as LESSOPEN
# generate filename for possible use by lesspipe
umask 077
if [ $BASENAME == $LESSFILE ]; then TMPFILE=$(tempfile -d $TMPDIR -p lessf); fi
# possibly redirect stdout to a file for lessfile
( if [ $BASENAME == $LESSFILE ]; then exec > $TMPFILE; fi
# Decode file for less
case $(echo $1 | tr '[:upper:]' '[:lower:]') in
*.arj)
if [ -x /usr/bin/unarj ]; then unarj l $1; else echo "No unarj available"; fi ;;
*.bz)
if [ -x /usr/bin/bunzip ]; then bunzip -c $1; else echo "No bunzip available"; fi ;;
*.bz2)
if [ -x /usr/bin/bunzip2 ]; then bunzip2 -dc $1; else echo "No bunzip2 available"; fi ;;
*.deb)
echo "$1:"; dpkg --info $1; echo -e '\n*** Contents:'; dpkg-deb --contents $1 ;;
*.gif|*.jpeg|*.jpg|*.pcd|*.png|*.tga|*.tiff|*.tif)
if [ -x /usr/X11R6/bin/identify ]; then /usr/X11R6/bin/identify $1;
else echo -e "No identify available\nInstall ImageMagick to browse images"; fi ;;
*.lzh)
if [ -x /usr/bin/lha ]; then lha v $1; else echo "No lha available"; fi ;;
*.rpm)
if [ -x /usr/bin/rpm ]; then echo "$1:"; rpm -q -i -p $1; echo -e '\n*** Contents:'; rpm -q -l -p $1;
else echo "rpm isn't available, no query on rpm package possible"; fi ;;
*.tar.gz|*.tgz|*.tar.z)
tar tzvf $1 ;;
# Note that this is out of alpha order so that we don't catch the gzipped tar files. #'
*.gz|*.z)
gzip -dc $1 ;;
*.tar)
tar tvf $1 ;;
*.zip)
if [ -x /usr/bin/unzip ]; then unzip -v $1; else echo "No unzip available"; fi ;;
*.zoo)
if [ -x /usr/bin/zoo ]; then zoo v $1; else echo "No zoo available"; fi ;;
esac
) 2>/dev/null
if [ $BASENAME == $LESSFILE ]; then
if [ -s $TMPFILE ]; then echo $TMPFILE; fi
fi
elif [ $# -eq 2 ] ; then
#
# we were called as LESSCLOSE
# delete the file created if we were lessfile
#
if [ $BASENAME == $LESSFILE ]; then
if [ -f $2 -a -O $2 ]; then rm -f $2; else echo "Error in deleting $2" > /dev/tty; fi
fi
elif [ $# -eq 0 ] ; then
#
# must setup shell to use LESSOPEN/LESSCLOSE
#
# I have no idea how some of the more esoteric shells (es, rc) do things.
# If they don't do things in a Bourne manner, send me a patch and I'll incorporate it.
#
# first determine the full path of lessfile/lesspipe
# if you can determine a better way to do this, send me a patch, I've not shell-scripted for many a year
FULLPATH=$(FOO=$(command -v $0); cd $(dirname $FOO);pwd)/$BASENAME
case "$SHELL" in
*csh)
if [ $BASENAME == $LESSFILE ]; then
echo "setenv LESSOPEN \"$FULLPATH '%s'\";"
echo "setenv LESSCLOSE \"$FULLPATH '%s' '%s'\";"
else
echo "setenv LESSOPEN \"| $FULLPATH '%s'\";"
echo "setenv LESSCLOSE \"$FULLPATH '%s' '%s'\";"
fi
;;
*)
if [ $BASENAME == $LESSFILE ]; then
echo "export LESSOPEN=\"$FULLPATH '%s'\";"
echo "export LESSCLOSE=\"$FULLPATH '%s' '%s'\";"
else
echo "export LESSOPEN=\"| $FULLPATH '%s'\";"
echo "export LESSCLOSE=\"$FULLPATH '%s' '%s'\";"
fi
;;
esac
else
echo "Usage: eval \$($BASENAME)"
exit
fi
|
