196670Sfanf#!/bin/sh 296670Sfanf# 3199813Sfanf# unifdefall: remove all the #if's from a source file 496670Sfanf# 5202636Sfanf# Copyright (c) 2002 - 2010 Tony Finch <dot@dotat.at> 6202636Sfanf# Copyright (c) 2009 - 2010 Jonathan Nieder <jrnieder@gmail.com> 7199813Sfanf# 8199813Sfanf# Redistribution and use in source and binary forms, with or without 9199813Sfanf# modification, are permitted provided that the following conditions 10199813Sfanf# are met: 11199813Sfanf# 1. Redistributions of source code must retain the above copyright 12199813Sfanf# notice, this list of conditions and the following disclaimer. 13199813Sfanf# 2. Redistributions in binary form must reproduce the above copyright 14199813Sfanf# notice, this list of conditions and the following disclaimer in the 15199813Sfanf# documentation and/or other materials provided with the distribution. 16199813Sfanf# 17199813Sfanf# THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18199813Sfanf# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19199813Sfanf# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20199813Sfanf# ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 21199813Sfanf# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22199813Sfanf# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23199813Sfanf# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24199813Sfanf# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25199813Sfanf# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26199813Sfanf# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27199813Sfanf# SUCH DAMAGE. 28199813Sfanf# 2996670Sfanf# $FreeBSD$ 3096670Sfanf 3196670Sfanfset -e 3296670Sfanf 33202636Sfanfunifdef="$(dirname "$0")/unifdef" 34202636Sfanfif [ ! -e "$unifdef" ] 35202636Sfanfthen 36202636Sfanf unifdef=unifdef 37202636Sfanffi 38202636Sfanf 39205089Sfanfcase "$@" in 40205089Sfanf"-d "*) echo DEBUGGING 1>&2 41205089Sfanf debug=-d 42205089Sfanf shift 43205089Sfanfesac 44205089Sfanf 45202636Sfanfbasename=$(basename "$0") 46199813Sfanftmp=$(mktemp -d "${TMPDIR:-/tmp}/$basename.XXXXXXXXXX") || exit 2 47205089Sfanftrap 'rm -r "$tmp" || exit 2' EXIT 4896670Sfanf 49199813Sfanfexport LC_ALL=C 5096670Sfanf 51199842Sfanf# list of all controlling macros 52205089Sfanf"$unifdef" $debug -s "$@" | sort | uniq >"$tmp/ctrl" 53199842Sfanf# list of all macro definitions 54199813Sfanfcpp -dM "$@" | sort | sed 's/^#define //' >"$tmp/hashdefs" 55199842Sfanf# list of defined macro names 56199842Sfanfsed 's/[^A-Za-z0-9_].*$//' <"$tmp/hashdefs" >"$tmp/alldef" 57199842Sfanf# list of undefined and defined controlling macros 58199813Sfanfcomm -23 "$tmp/ctrl" "$tmp/alldef" >"$tmp/undef" 59199813Sfanfcomm -12 "$tmp/ctrl" "$tmp/alldef" >"$tmp/def" 60199842Sfanf# create a sed script that extracts the controlling macro definitions 61199842Sfanf# and converts them to unifdef command-line arguments 62199842Sfanfsed 's|.*|s/^&\\(([^)]*)\\)\\{0,1\\} /-D&=/p|' <"$tmp/def" >"$tmp/script" 63199842Sfanf# create the final unifdef command 64205089Sfanf{ echo "$unifdef" $debug -k '\' 65199842Sfanf # convert the controlling undefined macros to -U arguments 66199842Sfanf sed 's/.*/-U& \\/' <"$tmp/undef" 67199842Sfanf # convert the controlling defined macros to quoted -D arguments 68199842Sfanf sed -nf "$tmp/script" <"$tmp/hashdefs" | 69199813Sfanf sed "s/'/'\\\\''/g;s/.*/'&' \\\\/" 70199813Sfanf echo '"$@"' 71199842Sfanf} >"$tmp/cmd" 72205089Sfanfcase $debug in 73205089Sfanf-d) for i in ctrl hashdefs alldef undef def script cmd 74205089Sfanf do echo ==== $i 75205089Sfanf cat "$tmp/$i" 76205089Sfanf done 1>&2 77205089Sfanfesac 78199842Sfanf# run the command we just created 79199813Sfanfsh "$tmp/cmd" "$@" 80