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#!/usr/bin/env perl
# Generate build_info.c.
# Copyright (C) 2009, 2010, 2011 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 <http://www.gnu.org/licenses/>.
use strict;
use warnings;
use Carp qw(croak);
my $file = shift @ARGV;
{
my $data = parse_config();
output_code($data);
}
sub parse_config
{
my $features = [];
my $choice_key;
my $choice = [];
my $list = $features;
open(my $fh, '<', "$file.in") or die "Cannot open $file.in: $!";
while (<$fh>) {
next if /^\s*$/;
if ($list eq $choice) {
unless (s/^\s+//) {
$list = $features;
push @$features, [$choice_key, $choice];
$choice = [];
undef $choice_key;
}
} elsif (/^([A-Za-z0-9_-]+) \s+ choice:\s*$/x) {
$choice_key = $1;
$list = $choice;
next;
}
if (/^([A-Za-z0-9_-]+) \s+ (.*)$/x) {
push @$list, [$1, $2];
} else {
croak "Can't parse line: $_";
}
}
if ($list eq $choice) {
push @$features, [$choice_key, $choice];
}
close($fh);
return $features;
}
sub output_code
{
my $features = shift;
open(my $fh, '>', "$file") or die "Cannot open $file: $!";
print $fh do { local $/; <DATA> }, "\n";
print $fh <<EOC;
const char *compiled_features[] =
{
EOC
foreach my $feature (sort { $a->[0] cmp $b->[0] } @$features) {
my ($name, $check) = @$feature;
if (ref $check eq 'ARRAY') {
my ($ch_name, $ch_check) = @{ shift @$check };
print $fh <<EOC;
#if $ch_check
"+$name/$ch_name",
EOC
foreach my $choice (@$check) {
($ch_name, $ch_check) = @$choice;
print $fh <<EOC;
#elif $ch_check
"+$name/$ch_name",
EOC
}
print $fh <<EOC;
#else
"-$name",
#endif
EOC
} else {
print $fh <<EOC;
#if $check
"+$name",
#else
"-$name",
#endif
EOC
}
}
print $fh <<EOC;
/* sentinel value */
NULL
};
EOC
}
__DATA__
/* Autogenerated by build_info.pl - DO NOT EDIT */
/* This stores global variables that are initialized with
preprocessor declarations for output with the --version flag.
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. */
#include "wget.h"
#include <stdio.h>
#include "version.h"
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