527 lines
13 KiB
Plaintext
527 lines
13 KiB
Plaintext
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#!/usr/bin/env perl
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#***************************************************************************
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# _ _ ____ _
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# Project ___| | | | _ \| |
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# / __| | | | |_) | |
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# | (__| |_| | _ <| |___
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# \___|\___/|_| \_\_____|
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#
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# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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#
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# This software is licensed as described in the file COPYING, which
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# you should have received as part of this distribution. The terms
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# are also available at https://curl.se/docs/copyright.html.
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#
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# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# copies of the Software, and permit persons to whom the Software is
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# furnished to do so, under the terms of the COPYING file.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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# SPDX-License-Identifier: curl
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#
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###########################################################################
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=begin comment
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Converts a curldown file to nroff (man page).
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=end comment
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=cut
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use strict;
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use warnings;
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my $cd2nroff = "0.1"; # to keep check
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my $dir;
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my $extension;
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my $keepfilename;
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while(@ARGV) {
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if($ARGV[0] eq "-d") {
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shift @ARGV;
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$dir = shift @ARGV;
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}
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elsif($ARGV[0] eq "-e") {
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shift @ARGV;
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$extension = shift @ARGV;
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}
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elsif($ARGV[0] eq "-k") {
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shift @ARGV;
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$keepfilename = 1;
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}
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elsif($ARGV[0] eq "-h") {
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print <<HELP
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Usage: cd2nroff [options] [file.md]
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-d <dir> Write the output to the file name from the meta-data in the
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specified directory, instead of writing to stdout
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-e <ext> If -d is used, this option can provide an added "extension", arbitrary
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text really, to append to the file name.
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-h This help text,
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-v Show version then exit
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HELP
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;
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exit 0;
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}
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elsif($ARGV[0] eq "-v") {
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print "cd2nroff version $cd2nroff\n";
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exit 0;
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}
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else {
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last;
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}
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}
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use POSIX qw(strftime);
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my @ts;
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if (defined($ENV{SOURCE_DATE_EPOCH})) {
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@ts = localtime($ENV{SOURCE_DATE_EPOCH});
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} else {
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@ts = localtime;
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}
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my $date = strftime "%B %d %Y", @ts;
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sub outseealso {
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my (@sa) = @_;
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my $comma = 0;
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my @o;
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push @o, ".SH SEE ALSO\n";
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for my $s (sort @sa) {
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push @o, sprintf "%s.BR $s", $comma ? ",\n": "";
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$comma = 1;
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}
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push @o, "\n";
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return @o;
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}
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sub outprotocols {
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my (@p) = @_;
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my $comma = 0;
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my @o;
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push @o, ".SH PROTOCOLS\n";
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if($p[0] eq "TLS") {
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push @o, "All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.";
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}
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else {
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my @s = sort @p;
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for my $e (sort @s) {
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push @o, sprintf "%s$e",
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$comma ? (($e eq $s[-1]) ? " and " : ", "): "";
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$comma = 1;
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}
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}
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push @o, "\n";
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return @o;
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}
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sub outtls {
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my (@t) = @_;
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my $comma = 0;
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my @o;
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if($t[0] eq "All") {
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push @o, "\nAll TLS backends support this option.";
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}
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else {
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push @o, "\nThis option works only with the following TLS backends:\n";
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my @s = sort @t;
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for my $e (@s) {
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push @o, sprintf "%s$e",
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$comma ? (($e eq $s[-1]) ? " and " : ", "): "";
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$comma = 1;
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}
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}
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push @o, "\n";
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return @o;
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}
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my %knownprotos = (
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'DICT' => 1,
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'FILE' => 1,
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'FTP' => 1,
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'FTPS' => 1,
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'GOPHER' => 1,
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'GOPHERS' => 1,
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'HTTP' => 1,
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'HTTPS' => 1,
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'IMAP' => 1,
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'IMAPS' => 1,
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'LDAP' => 1,
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'LDAPS' => 1,
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'MQTT' => 1,
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'POP3' => 1,
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'POP3S' => 1,
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'RTMP' => 1,
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'RTMPS' => 1,
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'RTSP' => 1,
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'SCP' => 1,
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'SFTP' => 1,
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'SMB' => 1,
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'SMBS' => 1,
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'SMTP' => 1,
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'SMTPS' => 1,
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'TELNET' => 1,
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'TFTP' => 1,
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'WS' => 1,
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'WSS' => 1,
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'TLS' => 1,
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'TCP' => 1,
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'All' => 1
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);
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my %knowntls = (
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'BearSSL' => 1,
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'GnuTLS' => 1,
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'mbedTLS' => 1,
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'OpenSSL' => 1,
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'rustls' => 1,
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'Schannel' => 1,
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'Secure Transport' => 1,
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'wolfSSL' => 1,
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'All' => 1,
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);
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sub single {
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my @seealso;
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my @proto;
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my @tls;
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my $d;
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my ($f)=@_;
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my $copyright;
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my $errors = 0;
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my $fh;
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my $line;
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my $list;
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my $tlslist;
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my $section;
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my $source;
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my $spdx;
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my $start = 0;
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my $title;
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if(defined($f)) {
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if(!open($fh, "<:crlf", "$f")) {
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print STDERR "cd2nroff failed to open '$f' for reading: $!\n";
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return 1;
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}
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}
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else {
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$f = "STDIN";
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$fh = \*STDIN;
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binmode($fh, ":crlf");
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}
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while(<$fh>) {
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$line++;
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if(!$start) {
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if(/^---/) {
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# header starts here
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$start = 1;
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}
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next;
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}
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if(/^Title: *(.*)/i) {
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$title=$1;
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}
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elsif(/^Section: *(.*)/i) {
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$section=$1;
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}
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elsif(/^Source: *(.*)/i) {
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$source=$1;
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}
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elsif(/^See-also: +(.*)/i) {
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$list = 1; # 1 for see-also
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push @seealso, $1;
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}
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elsif(/^See-also: */i) {
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if($seealso[0]) {
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print STDERR "$f:$line:1:ERROR: bad See-Also, needs list\n";
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return 2;
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}
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$list = 1; # 1 for see-also
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}
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elsif(/^Protocol:/i) {
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$list = 2; # 2 for protocol
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}
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elsif(/^TLS-backend:/i) {
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$list = 3; # 3 for TLS backend
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}
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elsif(/^ +- (.*)/i) {
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# the only lists we support are see-also and protocol
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if($list == 1) {
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push @seealso, $1;
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}
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elsif($list == 2) {
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push @proto, $1;
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}
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elsif($list == 3) {
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push @tls, $1;
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}
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else {
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print STDERR "$f:$line:1:ERROR: list item without owner?\n";
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return 2;
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}
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}
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# REUSE-IgnoreStart
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elsif(/^C: (.*)/i) {
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$copyright=$1;
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}
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elsif(/^SPDX-License-Identifier: (.*)/i) {
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$spdx=$1;
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}
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# REUSE-IgnoreEnd
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elsif(/^---/) {
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# end of the header section
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if(!$title) {
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print STDERR "ERROR: no 'Title:' in $f\n";
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return 1;
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}
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if(!$section) {
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print STDERR "ERROR: no 'Section:' in $f\n";
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return 2;
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}
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if(!$seealso[0]) {
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print STDERR "$f:$line:1:ERROR: no 'See-also:' present\n";
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return 2;
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}
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if(!$copyright) {
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print STDERR "$f:$line:1:ERROR: no 'C:' field present\n";
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return 2;
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}
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if(!$spdx) {
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print STDERR "$f:$line:1:ERROR: no 'SPDX-License-Identifier:' field present\n";
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return 2;
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}
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if($section == 3) {
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if(!$proto[0]) {
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printf STDERR "$f:$line:1:ERROR: missing Protocol:\n";
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exit 2;
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}
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my $tls = 0;
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for my $p (@proto) {
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if($p eq "TLS") {
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$tls = 1;
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}
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if(!$knownprotos{$p}) {
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printf STDERR "$f:$line:1:ERROR: invalid protocol used: $p:\n";
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exit 2;
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}
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}
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# This is for TLS, require TLS-backend:
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if($tls) {
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if(!$tls[0]) {
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printf STDERR "$f:$line:1:ERROR: missing TLS-backend:\n";
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exit 2;
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}
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for my $t (@tls) {
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if(!$knowntls{$t}) {
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printf STDERR "$f:$line:1:ERROR: invalid TLS backend: $t:\n";
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exit 2;
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}
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}
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}
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}
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last;
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}
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else {
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chomp;
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print STDERR "WARN: unrecognized line in $f, ignoring:\n:'$_';"
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}
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}
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if(!$start) {
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print STDERR "$f:$line:1:ERROR: no header present\n";
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return 2;
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}
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my @desc;
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my $quote = 0;
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my $blankline = 0;
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my $header = 0;
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# cut off the leading path from the file name, if any
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$f =~ s/^(.*[\\\/])//;
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push @desc, ".\\\" generated by cd2nroff $cd2nroff from $f\n";
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push @desc, ".TH $title $section \"$date\" $source\n";
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while(<$fh>) {
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$line++;
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$d = $_;
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if($quote) {
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if($quote == 4) {
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# remove the indentation
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if($d =~ /^ (.*)/) {
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push @desc, "$1\n";
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next;
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}
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else {
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# end of quote
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$quote = 0;
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push @desc, ".fi\n";
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next;
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}
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}
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if(/^~~~/) {
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# end of quote
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$quote = 0;
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push @desc, ".fi\n";
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next;
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}
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# convert single backslahes to doubles
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$d =~ s/\\/\\\\/g;
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# lines starting with a period needs it escaped
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$d =~ s/^\./\\&./;
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push @desc, $d;
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next;
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}
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# remove single line HTML comments
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$d =~ s/<!--.*?-->//g;
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# **bold**
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$d =~ s/\*\*(\S.*?)\*\*/\\fB$1\\fP/g;
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# *italics*
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$d =~ s/\*(\S.*?)\*/\\fI$1\\fP/g;
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if($d =~ /[^\\][\<\>]/) {
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print STDERR "$f:$line:1:WARN: un-escaped < or > used\n";
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}
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# convert backslash-'<' or '> to just the second character
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$d =~ s/\\([<>])/$1/g;
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# mentions of curl symbols with man pages use italics by default
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$d =~ s/((lib|)curl([^ ]*\(3\)))/\\fI$1\\fP/gi;
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|
|
||
|
|
# backticked becomes italics
|
||
|
|
$d =~ s/\`(.*?)\`/\\fI$1\\fP/g;
|
||
|
|
|
||
|
|
if(/^## (.*)/) {
|
||
|
|
my $word = $1;
|
||
|
|
# if there are enclosing quotes, remove them first
|
||
|
|
$word =~ s/[\"\'\`](.*)[\"\'\`]\z/$1/;
|
||
|
|
|
||
|
|
# enclose in double quotes if there is a space present
|
||
|
|
if($word =~ / /) {
|
||
|
|
push @desc, ".IP \"$word\"\n";
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
push @desc, ".IP $word\n";
|
||
|
|
}
|
||
|
|
$header = 1;
|
||
|
|
}
|
||
|
|
elsif(/^# (.*)/) {
|
||
|
|
my $word = $1;
|
||
|
|
# if there are enclosing quotes, remove them first
|
||
|
|
$word =~ s/[\"\'](.*)[\"\']\z/$1/;
|
||
|
|
|
||
|
|
if($word eq "PROTOCOLS") {
|
||
|
|
print STDERR "$f:$line:1:WARN: PROTOCOLS section in source file\n";
|
||
|
|
}
|
||
|
|
elsif($word eq "EXAMPLE") {
|
||
|
|
# insert the generated PROTOCOLS section before EXAMPLE
|
||
|
|
push @desc, outprotocols(@proto);
|
||
|
|
|
||
|
|
if($proto[0] eq "TLS") {
|
||
|
|
push @desc, outtls(@tls);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
push @desc, ".SH $word\n";
|
||
|
|
$header = 1;
|
||
|
|
}
|
||
|
|
elsif(/^~~~c/) {
|
||
|
|
# start of a code section, not indented
|
||
|
|
$quote = 1;
|
||
|
|
push @desc, "\n" if($blankline && !$header);
|
||
|
|
$header = 0;
|
||
|
|
push @desc, ".nf\n";
|
||
|
|
}
|
||
|
|
elsif(/^~~~/) {
|
||
|
|
# start of a quote section; not code, not indented
|
||
|
|
$quote = 1;
|
||
|
|
push @desc, "\n" if($blankline && !$header);
|
||
|
|
$header = 0;
|
||
|
|
push @desc, ".nf\n";
|
||
|
|
}
|
||
|
|
elsif(/^ (.*)/) {
|
||
|
|
# quoted, indented by 4 space
|
||
|
|
$quote = 4;
|
||
|
|
push @desc, "\n" if($blankline && !$header);
|
||
|
|
$header = 0;
|
||
|
|
push @desc, ".nf\n$1\n";
|
||
|
|
}
|
||
|
|
elsif(/^[ \t]*\n/) {
|
||
|
|
# count and ignore blank lines
|
||
|
|
$blankline++;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
# don't output newlines if this is the first content after a
|
||
|
|
# header
|
||
|
|
push @desc, "\n" if($blankline && !$header);
|
||
|
|
$blankline = 0;
|
||
|
|
$header = 0;
|
||
|
|
|
||
|
|
# quote minuses in the output
|
||
|
|
$d =~ s/([^\\])-/$1\\-/g;
|
||
|
|
# replace single quotes
|
||
|
|
$d =~ s/\'/\\(aq/g;
|
||
|
|
# handle double quotes first on the line
|
||
|
|
$d =~ s/^(\s*)\"/$1\\&\"/;
|
||
|
|
|
||
|
|
# lines starting with a period needs it escaped
|
||
|
|
$d =~ s/^\./\\&./;
|
||
|
|
|
||
|
|
if($d =~ /^(.*) /) {
|
||
|
|
printf STDERR "$f:$line:%d:ERROR: 2 spaces detected\n",
|
||
|
|
length($1);
|
||
|
|
$errors++;
|
||
|
|
}
|
||
|
|
if($d =~ /^[ \t]*\n/) {
|
||
|
|
# replaced away all contents
|
||
|
|
$blankline= 1;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
push @desc, $d;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if($fh != \*STDIN) {
|
||
|
|
close($fh);
|
||
|
|
}
|
||
|
|
push @desc, outseealso(@seealso);
|
||
|
|
if($dir) {
|
||
|
|
if($keepfilename) {
|
||
|
|
$title = $f;
|
||
|
|
$title =~ s/\.[^.]*$//;
|
||
|
|
}
|
||
|
|
my $outfile = "$dir/$title.$section";
|
||
|
|
if(defined($extension)) {
|
||
|
|
$outfile .= $extension;
|
||
|
|
}
|
||
|
|
if(!open(O, ">", $outfile)) {
|
||
|
|
print STDERR "Failed to open $outfile : $!\n";
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
print O @desc;
|
||
|
|
close(O);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
print @desc;
|
||
|
|
}
|
||
|
|
return $errors;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(@ARGV) {
|
||
|
|
for my $f (@ARGV) {
|
||
|
|
my $r = single($f);
|
||
|
|
if($r) {
|
||
|
|
exit $r;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
exit single();
|
||
|
|
}
|