usr.bin/unifdef/unifdefall.sh

   1 #!/bin/sh
   2 #
   3 # remove all the #if's from a source file
   4 #
   5 #       $dotat: things/unifdefall.sh,v 1.9 2002/09/24 19:43:57 fanf2 Exp $
   6 # $FreeBSD: src/usr.bin/unifdef/unifdefall.sh,v 1.1.2.2 2002/10/20 13:44:11 fanf Exp $
   7 # $DragonFly: src/usr.bin/unifdef/unifdefall.sh,v 1.2 2003/06/17 04:29:33 dillon Exp $
   8
   9 set -e
  10
  11 basename=`basename $0`
  12 tmp=`mktemp -d -t $basename` || exit 2
  13
  14 unifdef -s "$@" | sort | uniq > $tmp/ctrl
  15 cpp -dM "$@" | sort |
  16         sed -Ee 's/^#define[    ]+(.*[^  ])[    ]*$/\1/' > $tmp/hashdefs
  17 sed -Ee 's/^([A-Za-z0-9_]+).*$/\1/' $tmp/hashdefs > $tmp/alldef
  18 comm -23 $tmp/ctrl $tmp/alldef > $tmp/undef
  19 comm -12 $tmp/ctrl $tmp/alldef > $tmp/def
  20
  21 echo unifdef -k \\ > $tmp/cmd
  22 sed -Ee 's/^(.*)$/-U\1 \\/' $tmp/undef >> $tmp/cmd
  23 while read sym
  24 do      sed -Ee '/^('"$sym"')([(][^)]*[)])?([   ]+(.*))?$/!d;s//-D\1=\4/' $tmp/hashdefs
  25 done < $tmp/def |
  26         sed -Ee 's/\\/\\\\/g;s/"/\\"/g;s/^/"/;s/$/" \\/' >> $tmp/cmd
  27 echo '"$@"' >> $tmp/cmd
  28 sh $tmp/cmd "$@"
  29
  30 rm -r $tmp