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//bin/X11/lesspipe
#!/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|*.ddeb|*.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 ;; *.egg) if [ -x "`which unzip`" ]; then unzip -p "$1" EGG-INFO/PKG-INFO | \ sed '/^Description:/,/^\S/{/^Description:/d; /^\S/b; d}' echo unzip -v "$1" else echo "No unzip available" 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 ;; *.snap) if [ -x "`which snap`" ]; then snap info "$1"; fi if [ -x "`which unsquashfs`" ]; then echo echo '*** Contents:'; unsquashfs -ll -d '' "$1" else echo "No unsquashfs available"; 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 ;; *.whl) if [ -x "`which unzip`" ]; then unzip -p "$1" '*.dist-info/METADATA' | sed '/^$/q' unzip -v "$1" else echo "No unzip 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