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102 lines
2.7 KiB
Plaintext
102 lines
2.7 KiB
Plaintext
#! @SHELL@
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# ifnames - print the identifiers used in C preprocessor conditionals
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# Copyright (C) 1994, 1995 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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# Reads from stdin if no files are given.
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# Writes to stdout.
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# Written by David MacKenzie <djm@gnu.ai.mit.edu>
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# and Paul Eggert <eggert@twinsun.com>.
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usage="\
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Usage: ifnames [-h] [--help] [-m dir] [--macrodir=dir] [--version] [file...]"
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show_version=no
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: ${AC_MACRODIR=@datadir@}
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while test $# -gt 0; do
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case "$1" in
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-h | --help | --h* )
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echo "$usage"; exit 0 ;;
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--macrodir=* | --m*=* )
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AC_MACRODIR="`echo \"$1\" | sed -e 's/^[^=]*=//'`"
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shift ;;
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-m | --macrodir | --m* )
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shift
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test $# -eq 0 && { echo "$usage" 1>&2; exit 1; }
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AC_MACRODIR="$1"
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shift ;;
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--version | --versio | --versi | --vers)
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show_version=yes; shift ;;
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--) # Stop option processing.
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shift; break ;;
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-*) echo "$usage" 1>&2; exit 1 ;;
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*) break ;;
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esac
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done
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if test $show_version = yes; then
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version=`sed -n 's/define.AC_ACVERSION.[ ]*\([0-9.]*\).*/\1/p' \
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$AC_MACRODIR/acgeneral.m4`
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echo "Autoconf version $version"
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exit 0
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fi
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@AWK@ '
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# Record that sym was found in FILENAME.
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function file_sym(sym, i, fs) {
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if (sym ~ /^[A-Za-z_]/) {
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if (!found[sym,FILENAME]) {
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found[sym,FILENAME] = 1
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# Insert FILENAME into files[sym], keeping the list sorted.
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i = 1
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fs = files[sym]
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while (match(substr(fs, i), /^ [^ ]*/) \
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&& substr(fs, i + 1, RLENGTH - 1) < FILENAME) {
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i += RLENGTH
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}
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files[sym] = substr(fs, 1, i - 1) " " FILENAME substr(fs, i)
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}
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}
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}
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/^[\t ]*#/ {
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if (sub(/^[\t ]*#[\t ]*ifn?def[\t ]+/, "", $0)) {
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sub(/[^A-Za-z_0-9].*/, "", $0)
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file_sym($0)
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}
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if (sub(/^[\t ]*#[\t ]*(el)?if[\t ]+/, "", $0)) {
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# Remove comments. Not perfect, but close enough.
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gsub(/\/\*[^\/]*(\*\/)?/, "", $0)
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for (i = split($0, field, /[^A-Za-z_0-9]+/); 1 <= i; i--) {
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if (field[i] != "defined") {
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file_sym(field[i])
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}
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}
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}
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}
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END {
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for (sym in files) {
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print sym files[sym]
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}
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}
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' ${1+"$@"} | sort
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