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#!/bin/sh
# ifnames - print the identifiers used in C preprocessor conditionals
# Copyright (C) 1994 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
# Reads from stdin if no files are given.
# Writes to stdout.
# Written by David MacKenzie <djm@gnu.ai.mit.edu>
usage="\
Usage: ifnames [-h] [--help] [-m dir] [--macrodir=dir] [--version] [file...]"
show_version=no
test -z "$AC_MACRODIR" && AC_MACRODIR=@datadir@
while test $# -gt 0; do
case "$1" in
-h | --help | --h* )
echo "$usage"; exit 0 ;;
--macrodir=* | --m*=* )
AC_MACRODIR="`echo \"$1\" | sed -e 's/^[^=]*=//'`"
shift ;;
-m | --macrodir | --m* )
shift
test $# -eq 0 && { echo "$usage" 1>&2; exit 1; }
AC_MACRODIR="$1"
shift ;;
--version | --versio | --versi | --vers)
show_version=yes; shift ;;
--) # Stop option processing.
shift; break ;;
-*) echo "$usage" 1>&2; exit 1 ;;
*) break ;;
esac
done
if test $show_version = yes; then
version=`sed -n 's/define.AC_ACVERSION.[ ]*\([0-9.]*\).*/\1/p' \
$AC_MACRODIR/acgeneral.m4`
echo "Autoconf version $version"
exit 0
fi
if test $# -eq 0; then
cat > stdin
set stdin
trap 'rm -f stdin' 0
trap 'rm -f stdin; exit 1' 1 3 15
fi
for arg
do
# The first two substitutions remove comments. Not perfect, but close enough.
# The second is for comments that end on a later line. The others do:
# Enclose identifiers in @ and a space.
# Handle "#if 0" -- there are no @s to trigger removal.
# Remove non-identifiers.
# Remove any spaces at the end.
# Translate any other spaces to newlines.
sed -n '
s%/\*[^/]*\*/%%g
s%/\*[^/]*%%g
/^[ ]*#[ ]*ifn*def[ ][ ]*\([A-Za-z0-9_]*\).*/s//\1/p
/^[ ]*#[ ]*e*l*if[ ]/{
s///
s/@//g
s/\([A-Za-z_][A-Za-z_0-9]*\)/@\1 /g
s/$/@ /
s/@defined //g
s/[^@]*@\([^ ]* \)[^@]*/\1/g
s/ *$//
s/ /\
/g
p
}
' $arg | sort -u | sed 's%$% '$arg'%'
done | awk '
{ files[$1] = files[$1] " " $2 }
END { for (sym in files) print sym files[sym] }' | sort
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