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tcolumn/lesspipe
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#!/bin/sh | |
# | |
# lessfile/lesspipe | |
# $Id: lessopen,v 1.4 1998/05/12 09:37:46 torin Exp $ | |
# Plus POSIX sh changes by Y.Dirson | |
# | |
# Less filter for viewing non text files. | |
# | |
# Written by: Behan Webster <behanw@pobox.com> | |
# Many Modifications by Darren Stalder | |
# Further Modifications by Thomas Schoepf <schoepf@debian.org> | |
# | |
# 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 | |
# Helper function to list contents of ISO files (CD images) | |
iso_list() { | |
isoinfo -d -i "$1" | |
isoinfo -d -i "$1" | grep -q ^Rock\.Ridge && iiopts="$iiopts -R" | |
isoinfo -d -i "$1" | grep -q ^Joliet && iiopts="$iiopts -J" | |
echo | |
isoinfo -f $iiopts -i "$1" | |
} | |
if [ $# -eq 1 ] ; then | |
# we were called as LESSOPEN | |
# if the file doesn't exist, we don't do anything | |
if [ ! -r "$1" ]; then | |
exit 0 | |
fi | |
# generate filename for possible use by lesspipe | |
umask 077 | |
if [ $BASENAME = $LESSFILE ]; then | |
TMPFILE=`tempfile -d $TMPDIR -p lessf` | |
if [ -z "$TMPFILE" ]; then | |
echo >&2 "Could not find essential program 'tempfile'. Exiting" | |
exit 1 | |
fi | |
fi | |
( | |
# possibly redirect stdout to a file for lessfile | |
if [ $BASENAME = $LESSFILE ]; then exec > $TMPFILE; fi | |
# Allow for user defined filters | |
#if [ -x ~/.lessfilter -a -O ~/.lessfilter ]; then | |
if [ -x ~/.lessfilter ]; then | |
~/.lessfilter "$1" | |
if [ $? -eq 0 ]; then | |
if [ $BASENAME = $LESSFILE ]; then | |
if [ -s $TMPFILE ]; then | |
echo $TMPFILE | |
else | |
rm -f $TMPFILE | |
fi | |
fi | |
exit 0 | |
fi | |
fi | |
# Decode file for less | |
case `echo "$1" | tr '[:upper:]' '[:lower:]'` in | |
*.a) | |
if [ -x "`which ar`" ]; then ar tv "$1" | |
else echo "No ar available"; fi ;; | |
*.arj) | |
if [ -x "`which unarj`" ]; then unarj l "$1" | |
else echo "No unarj available"; fi ;; | |
*.tar.bz2) | |
if [ -x "`which bunzip2`" ]; then | |
bunzip2 -dc "$1" | tar tvvf - | |
else echo "No bunzip2 available"; fi ;; | |
*.bz) | |
if [ -x "`which bunzip`" ]; then bunzip -c "$1" | |
else echo "No bunzip available"; fi ;; | |
*.bz2) | |
if [ -x "`which bunzip2`" ]; then bunzip2 -dc "$1" | |
else echo "No bunzip2 available"; fi ;; | |
*.deb|*.udeb|*.ddebi|*.ipk) | |
echo "$1:"; dpkg --info "$1" | |
echo | |
echo '*** Contents:'; dpkg-deb --contents "$1" | |
;; | |
*.doc) | |
if [ -x "`which catdoc`" ]; then | |
catdoc "$1" | |
else | |
# no catdoc, read normally if file is text. | |
if ( file "$1" | grep ASCII 2>/dev/null >/dev/null); then | |
cat "$1" | |
else | |
echo "No catdoc available"; | |
fi | |
fi | |
;; | |
*.gif|*.jpeg|*.jpg|*.pcd|*.png|*.tga|*.tiff|*.tif) | |
if [ -x "`which identify`" ]; then | |
identify "$1" | |
else | |
echo "No identify available" | |
echo "Install ImageMagick to browse images" | |
fi | |
;; | |
*.iso) | |
if [ -x "`which isoinfo`" ]; then iso_list "$1" | |
else | |
echo "No isoinfo available" | |
echo "Install mkisofs to view ISO images" | |
fi | |
;; | |
*.bin|*.raw) | |
if [ -x "`which isoinfo`" ]; then | |
file "$1" | grep -q ISO\.9660 && iso_list "$1" | |
else | |
echo "No isoinfo available" | |
echo "Install mkisofs to view ISO images" | |
fi | |
;; | |
*.lha|*.lzh) | |
if [ -x "`which lha`" ]; then lha v "$1" | |
else echo "No lha available"; fi ;; | |
*.tar.lz|*.tlz) | |
if [ -x "`which lzip`" ]; then | |
lzip -dc "$1" | tar tvvf - | |
elif [ -x "`which lunzip`" ]; then | |
lunzip -dc "$1" | tar tvvf - | |
else echo "No lzip or lunzip available"; fi ;; | |
*.lz) | |
if [ -x "`which lzip`" ]; then lzip -dc "$1" | |
elif [ -x "`which lunzip`" ]; then lunzip -dc "$1" | |
else echo "No lzip or lunzip available"; fi ;; | |
*.tar.lzma) | |
if [ -x "`which lzma`" ]; then | |
lzma -dc "$1" | tar tfvv - | |
else | |
echo "No lzma available" | |
fi | |
;; | |
*.lzma) | |
if [ -x "`which lzma`" ]; then | |
lzma -dc "$1" | |
else | |
echo "No lzma available" | |
fi | |
;; | |
*.pdf) | |
if [ -x "`which pdftotext`" ]; then pdftotext -layout "$1" - | |
else echo "No pdftotext available"; fi ;; | |
*.rar|*.r[0-9][0-9]) | |
if [ -x "`which rar`" ]; then rar v "$1" | |
elif [ -x "`which unrar`" ]; then unrar v "$1" | |
else echo "No rar or unrar available"; fi ;; | |
*.rpm) | |
if [ -x "`which rpm`" ]; then | |
echo "$1:"; rpm -q -i -p "$1" | |
echo | |
echo '*** 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.dz) | |
tar tzvf "$1" --force-local | |
;; | |
*.tar.xz|*.txz) | |
if [ -x "`which xz`" ]; then | |
xz -dc "$1" | tar tfvv - | |
else | |
echo "No xz available" | |
fi | |
;; | |
*.xz) | |
if [ -x "`which xz`" ]; then | |
xz -dc "$1" | |
else | |
echo "No xz available" | |
fi | |
;; | |
# Note that this is out of alpha order so that we don't catch | |
# the gzipped tar files. | |
*.gz|*.z|*.dz) | |
gzip -dc "$1" ;; | |
*.tar) | |
tar tvf "$1" --force-local | |
;; | |
*.jar|*.war|*.ear|*.xpi|*.zip) | |
if [ -x "`which unzip`" ]; then unzip -v "$1"; | |
elif [ -x "`which miniunzip`" ]; then miniunzip -l "$1"; | |
elif [ -x "`which miniunz`" ]; then miniunz -l "$1"; | |
else echo "No unzip, miniunzip or miniunz available"; fi ;; | |
*.7z) | |
if [ -x "`which 7za`" ]; then 7za l "$1"; | |
elif [ -x "`which 7zr`" ]; then 7zr l "$1"; | |
else echo "No 7za or 7zr available"; fi ;; | |
*.zoo) | |
if [ -x "`which zoo`" ]; then zoo v "$1"; | |
elif [ -x "`which unzoo`" ]; then unzoo -l "$1"; | |
else echo "No unzoo or zoo available"; fi ;; | |
esac | |
) 2>/dev/null | |
if [ $BASENAME = $LESSFILE ]; then | |
if [ -s $TMPFILE ]; then | |
echo $TMPFILE | |
else | |
rm -f $TMPFILE | |
fi | |
fi | |
elif [ $# -eq 2 ] ; then | |
# | |
# we were called as LESSCLOSE | |
# delete the file created if we were lessfile | |
# | |
if [ $BASENAME = $LESSFILE ]; then | |
if [ -n "$BASH" ]; then | |
if [ ! -O "$2" ]; then | |
echo "Error in deleting $2" > /dev/tty | |
fi | |
fi | |
if [ -f "$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=`cd \`dirname $0\`;pwd`/$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 | |
#echo "# If you tried to view a file with a name that starts with '#', you" | |
#echo "# might see this message instead of the file's contents." | |
#echo "# To view the contents, try to put './' ahead of the filename when" | |
#echo "# calling less." | |
else | |
echo "Usage: eval \`$BASENAME\`" | |
exit | |
fi |