#!/bin/bash -e
# warning: derived file, from net2sh
set -a
dir=$PWD
work_dir=$dir/.net.$$
prog_dir=`dirname "$(readlink -f "$0")"`
prog=${0##*/}
prog_stem=${prog%%.*}
conf=$prog_stem.conf
conf_file_var=${prog_stem}_conf
PATH="$prog_dir:$prog_dir/sub:$prog_dir/use:$PATH"
PERL5LIB="$prog_dir:$prog_dir/perl:$PERL5LIB"
for C in "$prog_dir/$conf" "/etc/default/$prog" "/etc/$conf" "$HOME/.config/$conf" "./$conf" "${!conf_file_var}"; do
	if [ -e "$C" ]; then . "$C"; fi
done
. opts
_subs=
trap '
	kill -TERM $_subs 2>/dev/null
	wait
	trap - EXIT
	find "$work_dir" \( -type p -o -type l \) -print0 |
	  xargs --no-run-if-empty -0 rm -f
	rmdir "$work_dir"
	exit
' HUP INT QUIT TERM PIPE EXIT
mkdir "$work_dir"
set +e
#	sort - parallel mergesort for 8 cores
#	Net
[ $# = 0 ] || { echo >&2 usage: "$prog "; exit 2; }
cd "$work_dir"
mkfifo	in out i0 i1 i2 i3 i4 i5 i6 i7 o0 o1 o2 o3 o4 o5 o6 o7 m0 m1 m2 m3 m4 m5
cat	<&0 >in	& _subs="$_subs $!"	# input
cat	<out >&1	& _subs="$_subs $!"	# output
split_lines	<in i0 i1 i2 i3 i4 i5 i6 i7	& _subs="$_subs $!"	# split_lines
sort	-s <i0 >o0	& _subs="$_subs $!"	# sort0
sort	-s <i1 >o1	& _subs="$_subs $!"	# sort1
sort	-s <i2 >o2	& _subs="$_subs $!"	# sort2
sort	-s <i3 >o3	& _subs="$_subs $!"	# sort3
sort	-s <i4 >o4	& _subs="$_subs $!"	# sort4
sort	-s <i5 >o5	& _subs="$_subs $!"	# sort5
sort	-s <i6 >o6	& _subs="$_subs $!"	# sort6
sort	-s <i7 >o7	& _subs="$_subs $!"	# sort7
sort	-m o0 o1 >m0	& _subs="$_subs $!"	# merge0
sort	-m o2 o3 >m1	& _subs="$_subs $!"	# merge1
sort	-m o4 o5 >m2	& _subs="$_subs $!"	# merge2
sort	-m o6 o7 >m3	& _subs="$_subs $!"	# merge3
sort	-m m0 m1 >m4	& _subs="$_subs $!"	# merge4
sort	-m m2 m3 >m5	& _subs="$_subs $!"	# merge5
sort	-m m4 m5 >out	& _subs="$_subs $!"	# merge6
wait