diff options
Diffstat (limited to 'less/lesspipe/lesspipe')
| -rw-r--r-- | less/lesspipe/lesspipe | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/less/lesspipe/lesspipe b/less/lesspipe/lesspipe new file mode 100644 index 0000000..85a67ab --- /dev/null +++ b/less/lesspipe/lesspipe @@ -0,0 +1,313 @@ +#!/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) + 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) + 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 |