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#!/bin/sh
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#
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# To use this filter with less, define LESSOPEN:
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# export LESSOPEN="|/usr/bin/lesspipe.sh %s"
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#
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# The script should return zero if the output was valid and non-zero
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# otherwise, so less could detect even a valid empty output
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# (for example while uncompressing gzipped empty file).
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# For backward-compatibility, this is not required by default. To turn
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# this functionality there should be another vertical bar (|) straight
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# after the first one in the LESSOPEN environment variable:
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# export LESSOPEN="||/usr/bin/lesspipe.sh %s"
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if [ ! -e "$1" ] ; then
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exit 1
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fi
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if [ -d "$1" ] ; then
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ls -alF -- "$1"
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exit $?
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fi
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exec 2>/dev/null
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# Allow for user defined filters
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if [ -x ~/.lessfilter ]; then
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~/.lessfilter "$1"
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if [ $? -eq 0 ]; then
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exit 0
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fi
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fi
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case "$1" in
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*.[1-9n].bz2|*.[1-9]x.bz2|*.man.bz2|*.[1-9n].[gx]z|*.[1-9]x.[gx]z|*.man.[gx]z|*.[1-9n].lzma|*.[1-9]x.lzma|*.man.lzma)
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case "$1" in
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*.gz) DECOMPRESSOR="gzip -dc" ;;
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*.bz2) DECOMPRESSOR="bzip2 -dc" ;;
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*.xz|*.lzma) DECOMPRESSOR="xz -dc" ;;
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esac
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if [ -n "$DECOMPRESSOR" ] && $DECOMPRESSOR -- "$1" | file - | grep -q troff; then
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$DECOMPRESSOR -- "$1" | groff -Tascii -mandoc -
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exit $?
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fi ;;&
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*.[1-9n]|*.[1-9]x|*.man)
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if file "$1" | grep -q troff; then
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man -l "$1" | cat -s
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exit $?
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fi ;;&
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*.tar) tar tvvf "$1" ;;
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*.tgz|*.tar.gz|*.tar.[zZ]) tar tzvvf "$1" ;;
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*.tar.xz) tar Jtvvf "$1" ;;
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*.xz|*.lzma) xz -dc -- "$1" ;;
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*.tar.bz2|*.tbz2) bzip2 -dc -- "$1" | tar tvvf - ;;
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*.[zZ]|*.gz) gzip -dc -- "$1" ;;
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*.bz2) bzip2 -dc -- "$1" ;;
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*.zip|*.jar|*.nbm) zipinfo -- "$1" ;;
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*.rpm) rpm -qpivl --changelog -- "$1" ;;
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*.cpi|*.cpio) cpio -itv < "$1" ;;
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*.gpg) gpg -d "$1" ;;
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*.gif|*.jpeg|*.jpg|*.pcd|*.png|*.tga|*.tiff|*.tif)
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if [ -x /usr/bin/identify ]; then
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identify "$1"
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elif [ -x /usr/bin/gm ]; then
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gm identify "$1"
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else
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echo "No identify available"
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echo "Install ImageMagick or GraphicsMagick to browse images"
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exit 1
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fi ;;
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*)
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if [ -x /usr/bin/file ] && [ -x /usr/bin/iconv ] && [ -x /usr/bin/cut ]; then
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case `file -b "$1"` in
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*UTF-16*) conv='UTF-16' ;;
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*UTF-32*) conv='UTF-32' ;;
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esac
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if [ -n "$conv" ]; then
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env=`echo $LANG | cut -d. -f2`
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if [ -n "$env" -a "$conv" != "$env" ]; then
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iconv -f $conv -t $env "$1"
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exit $?
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fi
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fi
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fi
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exit 1
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esac
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exit $?
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