JezK
Edit File: ifnames
#! /usr/bin/perl # -*- perl -*- # Generated from bin/ifnames.in; do not edit by hand. eval 'case $# in 0) exec /usr/bin/perl -S "$0";; *) exec /usr/bin/perl -S "$0" "$@";; esac' if 0; # ifnames - print the identifiers used in C preprocessor conditionals # Copyright (C) 1994-1995, 1999-2003, 2005-2017, 2020-2021 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 3 of the License, 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, see <https://www.gnu.org/licenses/>. # Reads from stdin if no files are given. # Writes to stdout. # Written by David MacKenzie <djm@gnu.ai.mit.edu> # and Paul Eggert <eggert@twinsun.com>. use 5.006; use strict; use warnings FATAL => 'all'; BEGIN { my $pkgdatadir = $ENV{'autom4te_perllibdir'} || '/usr/share/autoconf'; unshift @INC, $pkgdatadir; # Override SHELL. On DJGPP SHELL may not be set to a shell # that can handle redirection and quote arguments correctly, # e.g.: COMMAND.COM. For DJGPP always use the shell that configure # has detected. $ENV{'SHELL'} = '/bin/sh' if ($^O eq 'dos'); } use Autom4te::General; use Autom4te::XFile; use Autom4te::FileUtils; # $HELP # ----- $help = "Usage: $0 [OPTION]... [FILE]... Scan all of the C source FILES (or the standard input, if none are given) and write to the standard output a sorted list of all the identifiers that appear in those files in '#if', '#elif', '#ifdef', or '#ifndef' directives. Print each identifier on a line, followed by a space-separated list of the files in which that identifier occurs. -h, --help print this help, then exit -V, --version print version number, then exit Report bugs to <bug-autoconf\@gnu.org>. GNU Autoconf home page: <https://www.gnu.org/software/autoconf/>. General help using GNU software: <https://www.gnu.org/gethelp/>. "; # $VERSION # -------- $version = "ifnames (GNU Autoconf) 2.71 Copyright (C) 2021 Free Software Foundation, Inc. License GPLv3+/Autoconf: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>, <https://gnu.org/licenses/exceptions.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Written by David J. MacKenzie and Paul Eggert. "; # &parse_args () # -------------- # Process any command line arguments. sub parse_args () { getopt (); } # %OCCURRENCE # ----------- my %occurrence; # &scan_file ($FILE-NAME) # ----------------------- sub scan_file ($) { my ($file_name) = @_; my $file = new Autom4te::XFile ($file_name, "<"); while ($_ = $file->getline) { # Continuation lines. $_ .= $file->getline while (s/\\$//); # Preprocessor directives. if (s/^\s*\#\s*(if|ifdef|ifndef|elif)\s+//) { # Remove comments. Not perfect, but close enough. s(/\*.*?\*/)(); s(/\*.*)(); s(//.*)(); foreach my $word (split (/\W+/)) { next if $word eq 'defined' || $word !~ /^[a-zA-Z_]/; $occurrence{$word}{$file_name} = 1; } } } } ## ------ ## ## Main. ## ## ------ ## parse_args(); foreach (@ARGV) { scan_file ($_); } foreach (sort keys %occurrence) { print "$_ ", join (' ', sort keys %{$occurrence{$_}}), "\n"; } ### Setup "GNU" style for perl-mode and cperl-mode. ## Local Variables: ## perl-indent-level: 2 ## perl-continued-statement-offset: 2 ## perl-continued-brace-offset: 0 ## perl-brace-offset: 0 ## perl-brace-imaginary-offset: 0 ## perl-label-offset: -2 ## cperl-indent-level: 2 ## cperl-brace-offset: 0 ## cperl-continued-brace-offset: 0 ## cperl-label-offset: -2 ## cperl-extra-newline-before-brace: t ## cperl-merge-trailing-else: nil ## cperl-continued-statement-offset: 2 ## End: