usr.bin/unifdef/unifdefall.sh

   1 #!/bin/sh
   2 #
   3 # unifdefall: remove all the #if's from a source file
   4 #
   5 # Copyright (c) 2002 - 2013 Tony Finch <dot@dotat.at>
   6 # Copyright (c) 2009 - 2010 Jonathan Nieder <jrnieder@gmail.com>
   7 #
   8 # Redistribution and use in source and binary forms, with or without
   9 # modification, are permitted provided that the following conditions
  10 # are met:
  11 # 1. Redistributions of source code must retain the above copyright
  12 #    notice, this list of conditions and the following disclaimer.
  13 # 2. Redistributions in binary form must reproduce the above copyright
  14 #    notice, this list of conditions and the following disclaimer in the
  15 #    documentation and/or other materials provided with the distribution.
  16 #
  17 # THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20 # ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
  21 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27 # SUCH DAMAGE.
  28
  29 set -e
  30
  31 unifdef="$(dirname "$0")/unifdef"
  32 if [ ! -e "$unifdef" ]
  33 then
  34         unifdef=unifdef
  35 fi
  36
  37 case "$@" in
  38 "-d "*) echo DEBUGGING 1>&2
  39         debug=-d
  40         shift
  41 esac
  42
  43 tmp=$(mktemp -d "${TMPDIR:-/tmp}/${0##*/}.XXXXXXXXXX") || exit 2
  44 trap 'rm -r "$tmp" || exit 2' EXIT
  45
  46 export LC_ALL=C
  47
  48 # list of all controlling macros; assume these are undefined
  49 "$unifdef" $debug -s "$@" | sort -u | sed 's/^/#undef /' >"$tmp/undefs"
  50 # list of all macro definitions
  51 cc -E -dM "$@" | sort >"$tmp/defs"
  52
  53 case $debug in
  54 -d)     cat "$tmp/undefs" "$tmp/defs" 1>&2
  55 esac
  56
  57 # order of -f arguments means definitions override undefs
  58 "$unifdef" $debug -k -f "$tmp/undefs" -f "$tmp/defs" "$@"