diff options
| author | fanf <fanf@FreeBSD.org> | 2002-05-15 16:30:28 +0000 |
|---|---|---|
| committer | fanf <fanf@FreeBSD.org> | 2002-05-15 16:30:28 +0000 |
| commit | 94a883658e1000832629fafcd2412eb9fa74e48f (patch) | |
| tree | 223cd7d3676754661a0b6d33c272d00175913620 /usr.bin/unifdef/unifdefall.sh | |
| parent | b860787a1895c30ea1f8f8c93c0b4578de259cf3 (diff) | |
| download | FreeBSD-src-94a883658e1000832629fafcd2412eb9fa74e48f.zip FreeBSD-src-94a883658e1000832629fafcd2412eb9fa74e48f.tar.gz | |
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
Diffstat (limited to 'usr.bin/unifdef/unifdefall.sh')
| -rw-r--r-- | usr.bin/unifdef/unifdefall.sh | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/usr.bin/unifdef/unifdefall.sh b/usr.bin/unifdef/unifdefall.sh new file mode 100644 index 0000000..5625eb9 --- /dev/null +++ b/usr.bin/unifdef/unifdefall.sh @@ -0,0 +1,29 @@ +#!/bin/sh +# +# remove all the #if's from a source file +# +# $dotat: things/unifdefall.sh,v 1.8 2002/05/15 10:31:20 fanf 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 \\ > $tmp/cmd +sed -Ee 's/^(.*)$/-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 |
