#!perl
use Config;
use File::Basename qw(&basename &dirname);
use Cwd;

$origdir = cwd;
chdir dirname($0);
$file = basename($0, '.PL');
$file .= $^O eq 'VMS' ? '.com' : '.pl';

open OUT,">$file" or die "Can't create $file: $!";

print "Extracting $file (with variable substitutions)\n";

print OUT <<"!GROK!THIS!";
$Config{startperl} -w
!GROK!THIS!

# In the following, perl variables are not expanded during extraction.

print OUT <<'!NO!SUBS!';
# file: search_rfc.pl
# Figure 9.8: Search for RFCs by simulating a form POSTing

use strict;
use LWP;
use URI::Escape;

use constant RFC_SEARCH  => 'http://www.faqs.org/cgi-bin/rfcsearch';
use constant RFC_REFERER => 'http://www.faqs.org/rfcs/';

die "Usage: rfc_search.pl term1 term2...\n" unless @ARGV;

my $ua       = LWP::UserAgent->new;
my $newagent = 'search_rfc/1.0 (' . $ua->agent .')';
$ua->agent($newagent);

my $search_terms = "@ARGV";
my $query_string = uri_escape("query=$search_terms&archive=rfcindex");

my $request = HTTP::Request->new(POST => RFC_SEARCH);
$request->content($query_string);
$request->referer(RFC_REFERER);

my $response = $ua->request($request);
die $response->message unless $response->is_success;

my $content = $response->content;
while ($content =~ /(RFC \d+).*<STRONG>(.+)<\/STRONG>/g) {
  print "$1\t$2\n";
}
!NO!SUBS!
close OUT or die "Can't close $file: $!";
chmod 0755, $file or die "Can't reset permissions for $file: $!\n";
exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':';
chdir $origdir;