Support conversion of make.conf-style files.

The script is very cautious, and may miss some; checking the results by hand
is absolutely vital.

Tools/scripts/options2ng.sh

@@ -5,26 +5,96 @@
 # This script makes a backup of the ports OPTIONS database and then converts
 # all of the saved files to the new format.
 
-PORT_DBDIR=$(make -C /usr/ports/shells/bash -V PORT_DBDIR)
+usage()
+{
+	<<EOF cat
+Usage:
 
-tar cfz $(mktemp /tmp/optionsbackup.tar.gz.XXX) $PORT_DBDIR
+$0 -p
 
-for optionsfile in $PORT_DBDIR/*/options
-do  if grep -q ^WITH $optionsfile ; then
-	options_read=
-	echo "Converting $optionsfile"
-	tmpfile=$(mktemp /tmp/optionsconvert.XXXXXXX) || exit 1
-	grep '^[#_]' $optionsfile > $tmpfile
-	for option in $(sed -ne 's/^WITH_\([^=]*\)=true/\1/p' < $optionsfile)
-	do  echo "OPTIONS_FILE_SET+=$option" >> $tmpfile
-	    options_read="${options_read} $option"
+Converts the ports OPTIONS database from WITH_/WITHOUT_ format to
+OPTIONS_FILE_SET format.  A backup tar archive is created and left in /tmp.
+
+$0 -f [filename]
+
+Converts filename (in WITH_/WITHOUT_ format, for example make.conf) into
+OPTIONS_SET format.
+
+XXX The output must be checked; the script attempts to avoid changes that
+make no sense, but some may slip through.  To avoid nonsensical conversions
+(such as WITH_*_VER) only WITH_ variables that are set to "true" or "yes"
+(case-insensitive, with or without quotes) will be converted.
+
+EOF
+}
+
+args=$(getopt pf: $*)
+if [ $? -ne 0 ]; then
+	usage;
+	exit 2
+fi
+
+set -- $args
+
+case "$1" in
+-p)
+	PORT_DBDIR=$(make -C /usr/ports/shells/bash -V PORT_DBDIR)
+
+	tar cfz $(mktemp /tmp/optionsbackup.tar.gz.XXX) $PORT_DBDIR
+
+	for optionsfile in $PORT_DBDIR/*/options
+	do  if grep -q ^WITH $optionsfile ; then
+		options_read=
+		echo "Converting $optionsfile"
+		tmpfile=$(mktemp /tmp/optionsconvert.XXXXXXX) || exit 1
+		grep '^[#_]' $optionsfile > $tmpfile
+		for option in $(sed -ne 's/^WITH_\([^=]*\)=true/\1/p' < $optionsfile)
+		do  echo "OPTIONS_FILE_SET+=$option" >> $tmpfile
+		    options_read="${options_read} $option"
+		done
+		for option in $(sed -ne 's/^WITHOUT_\([^=]*\)=true/\1/p' < $optionsfile)
+		do  echo "OPTIONS_FILE_UNSET+=$option" >> $tmpfile
+		    options_read="${options_read} $option"
+		done
+		echo "_FILE_COMPLETE_OPTIONS_LIST=$options_read" >> $tmpfile
+		mv $tmpfile $optionsfile
+		chmod 644 $optionsfile
+	    fi
 	done
-	for option in $(sed -ne 's/^WITHOUT_\([^=]*\)=true/\1/p' < $optionsfile)
-	do  echo "OPTIONS_FILE_UNSET+=$option" >> $tmpfile
-	    options_read="${options_read} $option"
+	;;
+-f)
+	filename=$2
+	if [ ! -f $filename ]
+	then echo $filename does not exist!
+	     exit 2
+	fi
+
+	tmpfile=$(mktemp /tmp/makeconfconvert.XXXXXXX) || exit 1
+
+	IFS='
+'
+	for line in $(cat $filename)
+	do  if $(echo $line | grep -Eq '(PKGNG|DEBUG)')
+	    then echo $line >> $tmpfile
+	    else echo $line | sed -E \
+		-e 's,^WITH_([^=]*)=[	 ]*.?[TtYy][RrEe][UuSs][Ee]?.?,OPTIONS_SET+=	\1,' \
+		-e 's,^WITHOUT_([^=]*)=[ 	]*.?[TtYy][RrEe][UuSs][Ee]?.?,OPTIONS_UNSET+=	\1,' \
+	      >> $tmpfile
+	    fi
 	done
-	echo "_FILE_COMPLETE_OPTIONS_LIST=$options_read" >> $tmpfile
-	mv $tmpfile $optionsfile
-	chmod 644 $optionsfile
-    fi
-done
+
+	diff -yW 80 $filename $tmpfile
+
+	<<EOF cat
+
+The results are stored in $tmpfile; please check it for
+sanity and copy it back over the original file (remember to keep a backup
+copy of the original file!)
+
+EOF
+	
+	;;
+*)
+	usage
+	;;
+esac