freebsd-dev/usr.bin/unifdef/unifdefall.sh

#!/bin/sh
#
# remove all the #if's from a source file
#
#	$dotat: things/unifdefall.sh,v 1.9 2002/09/24 19:43:57 fanf2 Exp $
# $FreeBSD$

set -e

basename=`basename $0`
tmp=`mktemp -d -t $basename` || exit 2

unifdef -s "$@" | sort | uniq > $tmp/ctrl
cpp -dM "$@" | sort |
	sed -Ee 's/^#define[ 	]+(.*[^	 ])[ 	]*$/\1/' > $tmp/hashdefs
sed -Ee 's/^([A-Za-z0-9_]+).*$/\1/' $tmp/hashdefs > $tmp/alldef
comm -23 $tmp/ctrl $tmp/alldef > $tmp/undef
comm -12 $tmp/ctrl $tmp/alldef > $tmp/def

echo unifdef -k \\ > $tmp/cmd
sed -Ee 's/^(.*)$/-U\1 \\/' $tmp/undef >> $tmp/cmd
while read sym
do	sed -Ee '/^('"$sym"')([(][^)]*[)])?([ 	]+(.*))?$/!d;s//-D\1=\4/' $tmp/hashdefs
done < $tmp/def |
	sed -Ee 's/\\/\\\\/g;s/"/\\"/g;s/^/"/;s/$/" \\/' >> $tmp/cmd
echo '"$@"' >> $tmp/cmd
sh $tmp/cmd "$@"

rm -r $tmp
Upgrade unifdef: * It now knows about the existence of #elif which would have caused it to produce incorrect results in some situations. * It can now process #if and #elif lines according to the values of symbols that are specified on the command line. The expression parser is only a simple subset of what C allows but it should be sufficient for most real-world code (it can cope with everything it finds in xterm). * It has an option for printing all of the symbols that might control #if processing. The unifdefall script uses this option along with cpp -dM to strip all #ifs from a file. * It has much larger static limits. * It handles nested #ifs much more completely. There have also been many style improvements: KNF; ANSI function definitions; all global stuff moved to the top of the file; use stdbool instead of h0h0bool; const-correctness; err(3) instead of fprintf(stderr, ...); enum instead of #define; commentary. I used NetBSD's unifdef as the basis of this since it has received the most attention over the years. PR: 37454 Reviewed by: markm, dwmalone Approved by: dwmalone (mentor) MFC after: 3 weeks 2002-05-15 16:30:28 +00:00			`#!/bin/sh`
			`#`
			`# remove all the #if's from a source file`
			`#`
The spec says that unifdefall removes all #ifs, and this now requires the -k flag to unifdef. 2002-09-24 19:50:03 +00:00			`# $dotat: things/unifdefall.sh,v 1.9 2002/09/24 19:43:57 fanf2 Exp $`
Upgrade unifdef: * It now knows about the existence of #elif which would have caused it to produce incorrect results in some situations. * It can now process #if and #elif lines according to the values of symbols that are specified on the command line. The expression parser is only a simple subset of what C allows but it should be sufficient for most real-world code (it can cope with everything it finds in xterm). * It has an option for printing all of the symbols that might control #if processing. The unifdefall script uses this option along with cpp -dM to strip all #ifs from a file. * It has much larger static limits. * It handles nested #ifs much more completely. There have also been many style improvements: KNF; ANSI function definitions; all global stuff moved to the top of the file; use stdbool instead of h0h0bool; const-correctness; err(3) instead of fprintf(stderr, ...); enum instead of #define; commentary. I used NetBSD's unifdef as the basis of this since it has received the most attention over the years. PR: 37454 Reviewed by: markm, dwmalone Approved by: dwmalone (mentor) MFC after: 3 weeks 2002-05-15 16:30:28 +00:00			`# $FreeBSD$`

			`set -e`

			basename=`basename $0`
			tmp=`mktemp -d -t $basename` \|\| exit 2

			`unifdef -s "$@" \| sort \| uniq > $tmp/ctrl`
			`cpp -dM "$@" \| sort \|`
			`sed -Ee 's/^#define[ ]+(.[^ ])[ ]$/\1/' > $tmp/hashdefs`
			`sed -Ee 's/^([A-Za-z0-9_]+).*$/\1/' $tmp/hashdefs > $tmp/alldef`
			`comm -23 $tmp/ctrl $tmp/alldef > $tmp/undef`
			`comm -12 $tmp/ctrl $tmp/alldef > $tmp/def`

The spec says that unifdefall removes all #ifs, and this now requires the -k flag to unifdef. 2002-09-24 19:50:03 +00:00			`echo unifdef -k \\ > $tmp/cmd`
Upgrade unifdef: * It now knows about the existence of #elif which would have caused it to produce incorrect results in some situations. * It can now process #if and #elif lines according to the values of symbols that are specified on the command line. The expression parser is only a simple subset of what C allows but it should be sufficient for most real-world code (it can cope with everything it finds in xterm). * It has an option for printing all of the symbols that might control #if processing. The unifdefall script uses this option along with cpp -dM to strip all #ifs from a file. * It has much larger static limits. * It handles nested #ifs much more completely. There have also been many style improvements: KNF; ANSI function definitions; all global stuff moved to the top of the file; use stdbool instead of h0h0bool; const-correctness; err(3) instead of fprintf(stderr, ...); enum instead of #define; commentary. I used NetBSD's unifdef as the basis of this since it has received the most attention over the years. PR: 37454 Reviewed by: markm, dwmalone Approved by: dwmalone (mentor) MFC after: 3 weeks 2002-05-15 16:30:28 +00:00			`sed -Ee 's/^(.*)$/-U\1 \\/' $tmp/undef >> $tmp/cmd`
			`while read sym`
			`do sed -Ee '/^('"$sym"')([(][^)][)])?([ ]+(.))?$/!d;s//-D\1=\4/' $tmp/hashdefs`
			`done < $tmp/def \|`
			`sed -Ee 's/\\/\\\\/g;s/"/\\"/g;s/^/"/;s/$/" \\/' >> $tmp/cmd`
			`echo '"$@"' >> $tmp/cmd`
			`sh $tmp/cmd "$@"`

			`rm -r $tmp`