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## HTML output
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# Copyright (C) 1993-1995 Ian Jackson.
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# This file 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 2, or (at your option)
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# any later version.
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# It 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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# You should have received a copy of the GNU General Public License
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# along with GNU Emacs; see the file COPYING.  If not, write to
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# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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# (Note: I do not consider works produced using these BFNN processing
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# tools to be derivative works of the tools, so they are NOT covered
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# by the GPL.  However, I would appreciate it if you credited me if
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# appropriate in any documents you format using BFNN.)
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%saniarray= ('<','lt', '>','gt', '&','amp', '"','quot');
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sub html_init {
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    $html_prefix = './'.$prefix;
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    $html_prefix =~ s:^\.//:/:;
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    system('rm','-r',"$html_prefix.html");
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    system('mkdir',"$html_prefix.html");
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    open(HTML,">$html_prefix.html/index.html");
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    print HTML "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">\n";
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    print HTML "<html>\n";
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    $html_needpara= -1;
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    $html_end='';
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    chop($html_date=`date '+%d %B %Y'`);
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    chop($html_year=`date '+%Y'`);
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}
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sub html_startup {
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    print HTML <<END;
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<head><title>
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$user_title
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</title>
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<link rev="made" href="mailto:$user_authormail">
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<link rel="Contents" href="index.html">
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<link rel="Start" href="index.html">
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<META name="description"
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      content="Frequently asked questions and answers (FAQ) for FFTW.">
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<link rel="Bookmark" title="FFTW FAQ" href="index.html">
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<LINK rel="Bookmark" title="FFTW Home Page"
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      href="http://theory.lcs.mit.edu/~fftw">
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<LINK rel="Bookmark" title="FFTW Manual"
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      href="http://theory.lcs.mit.edu/~fftw/doc/fftw_toc.html">
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</head><body text="#000000" bgcolor="#FFFFFF"><h1>
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$user_title
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</h1>
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END
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    &html_readrefs($_[0]);
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    if (length($user_copyrightref)) {
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        local ($refn) = $qrefn{$user_copyrightref};
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        if (!length($refn)) {
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            warn "unknown question (copyright) `$user_copyrightref'";
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        }
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        $refn =~ m/(\d+)\.(\d+)/;
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        local ($s,$n) = ($1,$2);
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        $html_copyrighthref= ($s == $html_sectionn)?'':"section$s.html";
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        $html_copyrighthref.= "#$qn2ref{$s,$n}";
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    }
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}
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sub html_close {
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    print HTML $html_end,"<address>\n$user_author\n";
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    print HTML "- $html_date\n</address><br>\n";
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    print HTML "Extracted from $user_title,\n";
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    print HTML "<A href=\"$html_copyrighthref\">" if length($html_copyrighthref);
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    print HTML "Copyright &copy; $html_year $user_copyholder.";
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    print HTML "</A>" if length($html_copyrighthref);
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    print HTML "\n</body></html>\n";
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    close(HTML);
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}
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sub html_startmajorheading {
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    local ($ref, $this,$next,$back) = @_;
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    local ($nextt,$backt);
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    $this =~ s/^Section /section/;  $html_sectionn= $ref;
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    $next =~ s/^Section /section/ && ($nextt= $sn2title{$'});
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    $back =~ s/^Section /section/ ? ($backt= $sn2title{$'}) : ($back='');
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    if ($html_sectionn) {
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        &html_close;
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        open(HTML,">$html_prefix.html/$this.html");
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        print HTML "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 3.2//EN\">\n";
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        print HTML "<html>\n";
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        $html_end= "<hr>\n";
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        $html_end.= "Next: <a href=\"$next.html\" rel=precedes>$nextt</a>.<br>\n"
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            if $next;
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        $html_end.= "Back: <a href=\"$back.html\" rev=precedes>$backt</a>.<br>\n"
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            if $back;
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        $html_end.= "<a href=\"index.html\" rev=subdocument>";
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        $html_end.= "Return to contents</a>.<p>\n";
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        print HTML <<END;
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<head><title>
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$user_brieftitle - Section $html_sectionn
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</title>
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<link rev="made" href="mailto:$user_authormail">
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<link rel="Contents" href="index.html">
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<link rel="Start" href="index.html">
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END
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        print HTML "<link rel=\"Next\" href=\"$next.html\">" if $next;
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        print HTML "<link rel=\"Previous\" href=\"$back.html\">" if $back;
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        print HTML <<END;
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<link rel="Bookmark" title="FFTW FAQ" href="index.html">
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</head><body text="#000000" bgcolor="#FFFFFF"><h1>
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$user_brieftitle - Section $html_sectionn <br>
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END
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        $html_needpara= -1;
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    }
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    else {
119
        print HTML "\n<h1>\n";
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        $html_needpara=-1;
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    }
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}
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sub html_endmajorheading {
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    print HTML "\n</h1>\n\n";
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    $html_needpara=-1;
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}
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sub html_startminorheading {
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    local ($ref, $this) = @_;
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    $html_needpara=0;
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    $this =~ m/^Question (\d+)\.(\d+)/;
133
    local ($s,$n) = ($1,$2);
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    print HTML "\n<h2><A name=\"$qn2ref{$s,$n}\">\n";
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}
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137
sub html_endminorheading {
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    print HTML "\n</A></h2>\n\n";
139
    $html_needpara=-1;
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}
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sub html_newsgroup { &arg('newsgroup'); }
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sub html_endnewsgroup { &endarg('newsgroup'); }
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sub html_do_newsgroup {
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    print HTML "<A href=\"news:$_[0]\"><code>$_[0]</code></A>";
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}
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sub html_email { &arg('email'); }
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sub html_endemail { &endarg('email'); }
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sub html_do_email {
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    print HTML "<A href=\"mailto:$_[0]\"><code>$_[0]</code></A>";
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}
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sub html_courier    { print HTML "<code>" ; }
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sub html_endcourier { print HTML "</code>"; }
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sub html_italic     { print HTML "<i>"   ; }
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sub html_enditalic  { print HTML "</i>"  ; }
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sub html_docref { &arg('docref'); }
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sub html_enddocref { &endarg('docref'); }
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sub html_do_docref {
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    if (!defined($html_refval{$_[0]})) {
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        warn "undefined HTML reference $_[0]";
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        $html_refval{$n}='UNDEFINED';
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    }
166
    print HTML "<A href=\"$html_refval{$_[0]}\">";
167
    &recurse($_[0]);
168
    print HTML "</A>";
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}
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sub html_readrefs {
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    local ($p);
173
    open(HTMLREFS,"<$_[0]") || (warn("failed to open HTML refs $_[0]: $!"),return);
174
    while(<HTMLREFS>) {
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        next if m/^\\\s/;
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        s/\s*\n$//;
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        if (s/^\\prefix\s*//) {
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            $p= $'; next;
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        } elsif (s/^\s*(\S.*\S)\s*\\\s*//) {
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            $_=$1; $v=$';
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            s/\\\\/\\/g;
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            $html_refval{$_}= $p.$v;
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        } else {
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            warn("ununderstood line in HTML refs >$_<");
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        }
186
    }
187
    close(HTMLREFS);
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}
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sub html_ftpsilent { &arg('ftpsilent'); }
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sub html_endftpsilent { &endarg('ftpsilent'); }
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sub html_do_ftpsilent {
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    if ($_[0] =~ m/:/) {
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        $html_ftpsite= $`;
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        $html_ftpdir= $'.'/';
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    } else {
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        $html_ftpsite= $_[0];
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        $html_ftpdir= '';
199
    }
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}
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sub html_ftpon { &arg('ftpon'); }
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sub html_endftpon { &endarg('ftpon'); }
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sub html_do_ftpon {
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#print STDERR "ftpon($_[0])\n";
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    $html_ftpsite= $_[0]; $html_ftpdir= '';
207
    print HTML "<code>";
208
    &recurse($_[0]);
209
    print HTML "</code>";
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}
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212
sub html_ftpin { &arg('ftpin'); }
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sub html_endftpin { &endarg('ftpin'); }
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sub html_do_ftpin {
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#print STDERR "ftpin($_[0])\n";
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    print HTML "<A href=\"ftp://$html_ftpsite$html_ftpdir$_[0]\"><code>";
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    &recurse($_[0]);
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    print HTML "</code></A>";
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}
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sub html_text {
222
    print HTML "\n<p>\n" if $html_needpara > 0;
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    $html_needpara=0;
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    $html_stuff= &html_sanitise($_[0]);
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    while ($html_stuff =~ s/^(.{40,70}) //) {
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        print HTML "$1\n";
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    }
228
    print HTML $html_stuff;
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}
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sub html_tab {
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    $htmltabignore++ || warn "html tab ignored";
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}
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sub html_newline       { print HTML "<br>\n"    ;                       }
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sub html_startverbatim { print HTML "<pre>\n"   ;                       }
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sub html_verbatim      { print HTML &html_sanitise($_[0]),"\n";         }
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sub html_endverbatim   { print HTML "</pre>\n"  ;  $html_needpara= -1;  }
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sub html_endpara {
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    $html_needpara || $html_needpara++;
242
}
243
 
244
sub html_finish {
245
    &html_close;
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}
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sub html_startindex {
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    print HTML "<ul>\n";
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}
251
 
252
sub html_endindex {
253
    print HTML "</ul><hr>\n";
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}
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sub html_startindexitem {
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    local ($ref,$qval) = @_;
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    $qval =~ m/Q(\d+)\.(\d+)/;
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    local ($s,$n) = ($1,$2);
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    print HTML "<li><a href=\"";
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    print HTML ($s == $html_sectionn)?'':"section$s.html";
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    print HTML "#$qn2ref{$s,$n}\" rel=subdocument>Q$s.$n. ";
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    $html_indexunhead='';
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}
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sub html_startindexmainitem {
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    local ($ref,$s) = @_;
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    $s =~ m/\d+/; $s= $&;
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    print HTML "<br><br>" if ($s > 1);
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    print HTML "<li><b><font size=\"+2\"><a href=\"section$s.html\" rel=subdocument>Section $s.  ";
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    $html_indexunhead='</font></b>';
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}
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sub html_endindexitem {
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    print HTML "</a>$html_indexunhead\n";
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}
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sub html_startlist {
279
    print HTML "\n";
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    $html_itemend="<ul>";
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}
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283
sub html_endlist {
284
    print HTML "$html_itemend\n</ul>\n";
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    $html_needpara=-1
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}
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sub html_item {
289
    print HTML "$html_itemend\n<li>";
290
    $html_itemend="";
291
    $html_needpara=-1;
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}
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sub html_startpackedlist {
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    print HTML "\n";
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    $html_itemend="<dir>";
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}
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299
sub html_endpackedlist {
300
    print HTML "$html_itemend\n</dir>\n";
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    $html_needpara=-1;
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}
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304
sub html_packeditem {
305
    print HTML "$html_itemend\n<li>";
306
    $html_itemend="";
307
    $html_needpara=-1;
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}
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sub html_startindent   { print HTML "<blockquote>\n"; }
311
sub html_endindent     { print HTML "</blockquote>\n"; }
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313
sub html_pageref {
314
    local ($ref,$sq) = @_;
315
    $sq =~ m/(\d+)\.(\d+)/;
316
    local ($s,$n) = ($1,$2);
317
    print HTML "<A href=\"";
318
    print HTML ($s == $html_sectionn)?'':"section$s.html";
319
    print HTML "#$qn2ref{$s,$n}\">Q$sq \`";
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}
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322
sub html_endpageref {
323
    print HTML "'</A>";
324
}
325
 
326
sub html_sanitise {
327
    local ($in) = @_;
328
    local ($out);
329
    while ($in =~ m/[<>&"]/) {
330
        $out.= $`. '&'. $saniarray{$&}. ';';
331
        $in=$';
332
    }
333
    $out.= $in;
334
    $out;
335
}
336
 
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1;