#!/bin/sh

#

# To use this filter with less, define LESSOPEN:

# export LESSOPEN="|/usr/bin/lesspipe.sh %s"

#

# The script should return zero if the output was valid and non-zero

# otherwise, so less could detect even a valid empty output

# (for example while uncompressing gzipped empty file).

# For backward-compatibility, this is not required by default. To turn

# this functionality there should be another vertical bar (|) straight

# after the first one in the LESSOPEN environment variable:

# export LESSOPEN="||/usr/bin/lesspipe.sh %s"

if [ ! -e "$1" ] ; then

	exit 1

fi

if [ -d "$1" ] ; then

	ls -alF -- "$1"

	exit $?

fi

exec 2>/dev/null

# Allow for user defined filters

if [ -x ~/.lessfilter ]; then

	~/.lessfilter "$1"

	if [ $? -eq 0 ]; then

		exit 0

	fi

fi

manfilter ()

{

	if test -x /usr/bin/man ; then

		# See rhbz#1241543 for more info.  Well, actually we firstly

		# used 'man -l', then we switched to groff, and then we again

		# switched back to 'man -l'.

		/usr/bin/man -P /usr/bin/cat -l "$1"

	elif test -x /usr/bin/groff; then

		# This is from pre-rhbz#1241543-time.

		groff -Tascii -mandoc "$1" | cat -s

	else

		echo "WARNING:"

		echo "WARNING: to better show manual pages, install 'man-db' package"

		echo "WARNING:"

		cat "$1"

	fi

}

export MAN_KEEP_FORMATTING=1

case "$1" in

*.[1-9n].bz2|*.[1-9]x.bz2|*.man.bz2|*.[1-9n].[glx]z|*.[1-9]x.[glx]z|*.man.[glx]z|*.[1-9n].lzma|*.[1-9]x.lzma|*.man.lzma|*.[1-9n].zst|*.[1-9]x.zst|*.man.zst|*.[1-9n].br|*.[1-9]x.br|*.man.br)

	case "$1" in

	*.gz)		DECOMPRESSOR="gzip -dc" ;;

	*.bz2)		DECOMPRESSOR="bzip2 -dc" ;;

	*.lz)		DECOMPRESSOR="lzip -dc" ;;

	*.zst)		DECOMPRESSOR="zstd -dcq" ;;

	*.br)		DECOMPRESSOR="brotli -dc" ;;

	*.xz|*.lzma)	DECOMPRESSOR="xz -dc" ;;

	esac

	if [ -n "$DECOMPRESSOR" ] && $DECOMPRESSOR -- "$1" | file - | grep -q troff; then

		$DECOMPRESSOR -- "$1" | manfilter -

		exit $?

	fi ;;&

*.[1-9n]|*.[1-9]x|*.man)

	if file "$1" | grep -q troff; then

		manfilter "$1"

		exit $?

	fi ;;&

*.tar) tar tvvf "$1"; exit $? ;;

*.tgz|*.tar.gz|*.tar.[zZ]) tar tzvvf "$1"; exit $? ;;

*.tar.xz) tar Jtvvf "$1"; exit $? ;;

*.xz|*.lzma) xz -dc -- "$1"; exit $? ;;

*.tar.lz) tar --lzip -tvvf "$1"; exit $? ;;

*.lz) lzip -dc -- "$1"; exit $? ;;

*.tar.zst) tar --zstd -tvvf "$1"; exit $? ;;

*.zst) zstd -dcq -- "$1"; exit $? ;;

*.tar.br) brotli -dc -- "$1" | tar tvvf -; exit $? ;;

*.br) brotli -dc -- "$1"; exit $? ;;

*.tar.bz2|*.tbz2) bzip2 -dc -- "$1" | tar tvvf -; exit $? ;;

*.[zZ]|*.gz) gzip -dc -- "$1"; exit $? ;;

*.bz2) bzip2 -dc -- "$1"; exit $? ;;

*.zip|*.jar|*.nbm) zipinfo -- "$1"; exit $? ;;

# --nomanifest -> rhbz#1450277

*.rpm) rpm -qpivl --changelog --nomanifest -- "$1"; exit $? ;;

*.cpi|*.cpio) cpio -itv < "$1"; exit $? ;;

*.gpg)

	if [ -x /usr/bin/gpg2 ]; then

		gpg2 -d "$1"

		exit $?

	elif [ -x /usr/bin/gpg ]; then

		gpg -d "$1"

		exit $?

	else

		echo "No GnuPG available."

		echo "Install gnupg2 or gnupg to show encrypted files."

		exit 1

	fi ;;

*.gif|*.jpeg|*.jpg|*.pcd|*.png|*.tga|*.tiff|*.tif)

	if [ -x /usr/bin/identify ]; then

		identify "$1"

		exit $?

	elif [ -x /usr/bin/gm ]; then

		gm identify "$1"

		exit $?

	else

		echo "No identify available"

		echo "Install ImageMagick or GraphicsMagick to browse images"

		exit 1

	fi ;;

*)

	if [ -x /usr/bin/file ] && [ -x /usr/bin/iconv ] && [ -x /usr/bin/cut ]; then

		case `file -b "$1"` in

		*UTF-16*) conv='UTF-16' ;;

		*UTF-32*) conv='UTF-32' ;;

		esac

		if [ -n "$conv" ]; then

			env=`echo $LANG | cut -d. -f2`

			if [ -n "$env" -a "$conv" != "$env" ]; then

				iconv -f $conv -t $env "$1"

				exit $?

			fi

		fi

	fi

	exit 1

esac