216 lines
5.4 KiB
Perl
216 lines
5.4 KiB
Perl
#!/usr/bin/perl
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#
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# Empire - A multi-player, client/server Internet based war game.
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# Copyright (C) 1986-2015, Dave Pare, Jeff Bailey, Thomas Ruschak,
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# Ken Stevens, Steve McClure, Markus Armbruster
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#
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# Empire 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 3 of the License, or
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# (at your option) any later version.
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#
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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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#
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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, see <http://www.gnu.org/licenses/>.
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#
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# ---
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#
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# See files README, COPYING and CREDITS in the root of the source
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# tree for related information and legal notices. It is expected
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# that future projects/authors will amend these files as needed.
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#
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# ---
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#
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# emp2html.pl: Convert info source to HTML
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#
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# Known contributors to this file:
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# Drake Diedrich, 1996
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# Markus Armbruster, 2004-2013
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#
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# Usage: emp2html.pl INFO...
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#
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# Convert info source on standard input to HTML on standard output.
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# INFO... are the info page names.
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use strict;
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use warnings;
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my $in_nf = 0;
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my $esc = "\\";
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my $ignore = 0;
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my $is_subj;
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my @a;
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my %topic;
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for (@ARGV) {
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$topic{$_} = 1;
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}
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print "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\"\n";
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print " \"http://www.w3.org/TR/html4/strict.dtd\">\n";
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print "<html>\n";
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print "<head>\n";
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line: while (<STDIN>) {
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chomp; # strip record separator
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s/((^|[^\\])(\\\\)*)\\\".*/$1/g; # strip comments
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@a = req($_);
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if (!@a) {
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if ($is_subj && $in_nf) {
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while ($_ =~ /[A-Za-z0-9\-\.]+/g) {
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print htmlify("$`");
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print anchor("$&");
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$_="$'";
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}
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}
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print htmlify($_), "\n" unless $ignore;
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next line;
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}
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# requests
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if ($a[1] eq "ig") { $ignore = 1; next line; }
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if ($ignore) {
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$ignore = 0 if $a[1] eq "..";
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next line;
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}
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if ($a[1] eq "TH") {
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@a = checkarg(2, @a);
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$is_subj = $a[2] eq 'Subject' || $a[2] eq 'Info';
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$a[3] = htmlify($a[3]);
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print "<title>$a[2] : $a[3]</title>\n";
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print "</head>\n";
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print "<body>\n";
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print "<h1>$a[2] : $a[3]</h1>\n";
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print "<p>\n";
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next line;
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}
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if ($a[1] eq "SY") {
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@a = checkarg(1, @a);
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$a[2] = htmlify($a[2]);
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print "<samp>[##:##] Command : </samp><KBD>$a[2]</KBD><p>\n";
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next line;
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}
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if ($a[1] eq "EX") {
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my $str = htmlify(join(' ',@a[2..$#a]));
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print "<br><samp>[##:##] Command : </samp><kbd>$str</kbd><p>\n";
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next line;
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}
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if ($a[1] eq "L" && $is_subj) {
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$a[2] =~ / /;
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print "<br>" . anchor("$`") . " $'\n";
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next line;
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}
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if ($a[1] =~ /^LV?$/) {
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@a = checkarg(1, @a);
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$a[2] = htmlify($a[2]);
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print "<h2>$a[2]</h2>\n";
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print "<p>\n";
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next line;
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}
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if ($a[1] eq "eo") { $esc = 0; next line; }
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if ($a[1] eq "ec") { $esc = $#a == 1 ? "\\" : $a[2]; next line; }
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if ($a[1] =~ /NF|nf/i) { $in_nf = 1; printf (("<p><pre>\n")); next line; }
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if ($a[1] =~ /FI|fi/i) { $in_nf = 0; printf (("</pre><p>\n")); next line; }
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if ($a[1] eq "s1") { printf (("<hr><p>\n")); next line; }
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if ($a[1] eq "br") { printf "<br>\n"; next line; }
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if ($a[1] eq "SA") {
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@a = checkarg(1, @a);
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@a = split(/[\: \"\,\.]+/, $a[2]);
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for my $a (@a) {
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$a = anchor($a);
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}
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print "<p>See also : ", join("\n, ", @a), "\n";
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}
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# ignore unknown request
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}
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print "</body>\n";
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print "</html>\n";
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sub req {
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local ($_) = @_;
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if (/^([\.\'])[ \t]*([^ ]*) *(.*)/) {
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my @a = ($1, $2);
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$_ = $3;
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while (/\G(\"((\\.|[^\\\"])*)(\"|\Z))|\G(([^ ]|\\.)+) */g) {
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push(@a, $2 || $5);
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}
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return @a;
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}
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return ();
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}
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sub checkarg {
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my ($n, @a) = @_;
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warn "extra arguments for $a[1] ignored" if $#a > $n+1;
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warn "missing arguments for $a[1] supplied" if $#a < $n+1;
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while ($#a < $n+1) {
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push @a, "";
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}
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return @a;
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}
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sub anchor {
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local ($_) = @_;
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return $topic{$_} ? "<a href=\"$_.html\">$_</a>" : $_;
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}
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# Translate HTML special characters into escape sequences
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sub htmlify {
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local ($_) = @_;
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die "funny escape character `$esc' not supported"
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if $esc && $esc ne "\\";
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# translate some troff escapes
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s/\\&//g if $esc; # zero width space character
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# escape HTML special characters
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s/\&/&/g;
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s/\</</g;
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s/\>/>/g;
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return $_ unless $esc;
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# translate more troff escapes
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s/\\e/&\#92;/g; # escape character
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# turn quoted strings that look like info names into links
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# tacky...
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my $pfx = "";
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while (/\\\*Q([A-Za-z0-9\-\.]+)\\\*U|\"info ([A-Za-z0-9\-\.]+)\"/) {
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if (defined $1 && $topic{$1}) {
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$pfx = $` . anchor($1);
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} elsif (defined $2 && $topic{$2}) {
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$pfx = "$`\"info " . anchor($2) . "\"";
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} else {
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$pfx .= $` . $&;
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}
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$_ = "$'";
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}
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$_ = "$pfx$_";
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# tranlate more troff escapes and strings
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s/\\\*Q/<em>/g;
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s/\\\*U/<\/em>/g;
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s/\\fI/<em>/g;
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s/\\fR/<\/em><\/em>/g;
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s/\\fB/<strong>/g;
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s/\\fP/<\/strong><\/em>/g;
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s/\\\*\(bF/<strong>/g; # bold font
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s/\\\*\(pF/<\/strong><\/em>/g; # pica font
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s/\\\*\(nF/<\/strong><\/em>/g; # normal font
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s/\\\*\(iF/<em>/g; # italic font
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s/\\\(mu/x/g; # multiply symbol
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s/\\ / /g; # non breaking space
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return $_;
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}
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