#! /bin/sh

#
# Don't use a for loop, the number of files might exceed the
# command-line limit.
#
# This script changes albert to alberta and ALBERT to ALBERTA
# in _any_ regular file.
#
#

ECHO=
while test $# -gt 0 ; do
    case $1 in
	DRYRUN)
	    set -x
	    ECHO=echo
	    ESC=\\
	    ;;
	REVERSE)
	    REVERSE=1
	    ;;
	LIST)
	    LIST=1
	    ;;
	*)
	    echo "The arguments must be DRYRUN, REVERSE or LIST"
	    exit 1
	    ;;
    esac
    shift
done



trap "rm -f /tmp/changesex.$$" 0

if test -z "$REVERSE"; then
    cat > /tmp/changesex.$$ <<EOF
#! /bin/sh
F=\$1
if ! echo \$F|grep -iqs "/CVS/" && \\
   ! grep -iqs alberta \$F && grep -iqs albert \$F ; then
    echo "ALBERT -> ALBERTA in \$F"
    if test -z "$LIST"; then
	$ECHO sed -e 's/albert/alberta/g' -e 's/ALBERT/ALBERTA/g' \$F $ESC> \$F.new
	$ECHO mv -f \$F.new \$F
    fi
fi
EOF
else
    cat > /tmp/changesex.$$ <<EOF
#! /bin/sh
F=\$1
if ! echo \$F|grep -iqs "/CVS/" && grep -iqs alberta \$F ; then
    echo "ALBERTA -> ALBERT in \$F"
    if test -z "$LIST"; then
	$ECHO sed -e 's/alberta/albert/g' -e 's/ALBERTA/ALBERT/g' \$F $ESC> \$F.new
	$ECHO mv -f \$F.new \$F
    fi
fi
EOF
fi
chmod +x /tmp/changesex.$$

find . \( -type f -a \! \( -name "*.new" -o -name ".*.new" \) \) -exec /tmp/changesex.$$ \{\} \;