diffmax

#!/bin/sh
# use as:
# diffmax -m cataRT-0.4cc1/cataRT-0.4cc.pat cataRT-0.4d/cataRT-0.4d.pat | grep -v connect | less
# $Log: diffmax,v $
# Revision 1.6  2015/02/05 11:44:49  schwarz
# damn, | doesn't work in a string
#
# Revision 1.5  2014/03/28 16:34:55  schwarz
# 22.11.2010: json-sort, eat -L and arg
#
# Revision 1.4  2010/10/18 15:05:51  schwarz
# change for max5
#
# Revision 1.3  2007/11/27 13:27:37  schwarz
# help
# pass options to diff

#echo $0: $* EOA

#if [ ( $# -eq 0 )  -o  ( $1 = -h ) ]; then
if [ $# -eq 0 ]; then
    echo "usage:   diffmax [-m] [diff-opts] patch1.maxpat patch2.maxpat"
    echo "options: -m	munge: remove layout changes"
    echo "         all further options are passed to diff(1)"
    exit;
fi

if [ $1 = -m ]; then
    # remove changes in position
#    munge="perl -n $HOME/bin/diffmaxmunge.pl"
    munge="json-sort.pl -"
    munge2="perl -n $HOME/bin/diffmaxmunge.pl -"
    shift;
else
    munge="json-sort.pl -"
    munge2="cat"
fi

echo $0: munge is $munge \| $munge2

while [ $1 = -L ]; do
    shift; shift;	# svn label arg
done


ta="/tmp/diffmax.$$.a. "`basename $1`
tb="/tmp/diffmax.$$.b. "`basename $2`

# echo 1 $1 2 $2 a $ta b $tb

cat "$1" | tr \\r \\n | $munge | $munge2 >"$ta"
cat "$2" | tr \\r \\n | $munge | $munge2 >"$tb"

shift; shift
diff -w $* "$ta" "$tb"