mirror of
https://gitlab.nic.cz/labs/bird.git
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584 lines
18 KiB
Perl
584 lines
18 KiB
Perl
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#
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# Html2Html.pm
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#
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# $Id: Html2Html.pm,v 1.4 2001/08/31 23:09:10 sano Exp $
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#
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# Convert parsed linuxdoc-sgml to html.
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# - Split files; match references, generate TOC and navigation
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# aids, etc.
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#
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# Rules based on html2html.l
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#
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package LinuxDocTools::Html2Html;
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use FileHandle;
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use LinuxDocTools::Lang;
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# Externally visible variables
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$html2html = {};
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# Initialize: set splitlevel, extension, images, filename,
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# filenumber, label, header, footer, toclevel,
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# tmpbase, debug.
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# Usage:
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# &{$html2html->{init}}(split,ext,img,filename,filenum,label,hdr,ftr,toc,tmpbase, debug);
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# split level: 0 - super page mode
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# 1 - big page mode
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# 2 - small page mode
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$html2html->{init} = sub {
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$splitlevel = shift;
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SWITCH: {
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$super_page_mode = 0, $big_page_mode = 1, last SWITCH
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if ($splitlevel == 1);
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$super_page_mode = 0, $big_page_mode = 0, last SWITCH
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if ($splitlevel == 2);
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}
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$fileext = shift;
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$use_imgs = shift;
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$firstname = shift;
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$filecount = 1 + shift;
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$lprec = shift;
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$header = shift;
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$footer = shift;
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$toclevel = shift;
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if ($toclevel == -1) {
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if ($splitlevel == 0) {
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$toclevel = 0;
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} else {
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$toclevel = 2;
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}
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}
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$tmpbase = shift;
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$content_file = $tmpbase . ".content";
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$debug = shift;
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$nextlabel = Xlat ("Next");
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$prevlabel = Xlat ("Previous");
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$toclabel = Xlat ("Contents");
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};
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# Package variables
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$big_page_mode = 0; # '-2' subsection splitting
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$super_page_mode = 1; # One page vs. page/section
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$chapter_mode = 0; # <article> vs. <report>
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$current = ""; # State of section/subsection/etc.
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$filenum = 1; # Current output file number
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$filecount = 1;
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$firstname = "$$"; # Base name for file
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$headbuf = ""; # Buffer for URL's
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$fileext = "html"; # "html" vs. "htm" for 8.3
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$in_appendix = 0; # n.n vs. a.n section numbers
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$in_section_list = 0; # List of sections flag
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$language = ""; # Default English; use '-Lname'
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# $lprec{label} # Label record
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$nextlabel = ""; # Link string
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$outfh = STDOUT; # Output filehandle
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$outname = ""; # Output file name
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$prevlabel = ""; # Link string
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$refname = ""; # Ref string
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$sectname = ""; # Section name
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$secnr = 0; # Section count
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$ssectname = ""; # Subsection name
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$ssecnr = 0; # Subsection count
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$skipnewline = 0; # Flag to ignore new line
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$toclabel = ""; # Link string
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$titlename = ""; # Title of document
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$use_imgs = 0; # '-img' pictorial links
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$urlname = ""; # Name for url links
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$header = "";
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$footer = "";
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$toclevel = -1;
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$tmpbase = "/tmp/sgmltmp" . $$;
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$debug = 0;
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$content_file = $tmpbase . ".content.init";
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# Ruleset
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$html2html->{rules} = {}; # Individual parsing rules
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$html2html->{rules}->{'^<@@appendix>.*$'} = sub {
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$in_appendix = 1; $secnr = 0; $ssecnr = 0;
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};
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$html2html->{rules}->{'^<@@url>(.*)$'} = sub {
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$skipnewline = 1; $urlname = $1; $headbuf = qq(<A HREF="$1">);
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};
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$html2html->{rules}->{'^<@@urlnam>(.*)$'} = sub {
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$headbuf = $headbuf . "$urlname</A>";
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};
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$html2html->{rules}->{'^<@@endurl>.*$'} = sub {
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$skipnewline = -1; $outfh->print($headbuf); $headbuf = "";
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};
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$html2html->{rules}->{'^<@@title>(.*)$'} = sub {
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$titlename = $1; &heading(STDOUT); print(STDOUT "<H1>$1</H1>\n\n");
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};
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$html2html->{rules}->{'^<@@head>(.*)$'} = sub {
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$skipnewline = 1; $headbuf = $1;
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};
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$html2html->{rules}->{'^<@@part>.*$'} = sub { $current = "PART"; };
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$html2html->{rules}->{'^<@@endhead>.*$'} = sub {
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SWITCH: {
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$outfh->print("<H1>$headbuf</H1>\n\n"), last SWITCH
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if ($current eq "PART");
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$outfh->print("<H1>$headbuf</H1>\n\n"), last SWITCH
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if ($current eq "CHAPTER");
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$outfh->print("<H2>$headbuf</H2>\n\n"), last SWITCH
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if ($current eq "SECTION");
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$outfh->print("<H2>$headbuf</H2>\n\n"), last SWITCH
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if ($current eq "SUBSECT");
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$outfh->print("<H3>$headbuf</H3>\n\n"), last SWITCH;
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}
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$current = ""; $headbuf = ""; $skipnewline = 0;
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};
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$html2html->{rules}->{'^<@@chapt>(.*)$'} = sub {
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$chapter_mode = 1; $skipnewline = 1; $sectname = $1;
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&start_chapter($sectname);
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};
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$html2html->{rules}->{'^<@@sect>(.*)$'} = sub {
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$skipnewline = 1; $ssectname = $1;
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if ($chapter_mode) {
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&start_section($ssectname);
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} else {
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$sectname = $ssectname; &start_chapter($ssectname);
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}
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};
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$html2html->{rules}->{'^<@@ssect>(.*)$'} = sub {
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$skipnewline = 1; $ssectname = $1;
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if (!$chapter_mode) {
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&start_section($ssectname);
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} else {
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$current = ""; $headbuf = $ssectname;
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}
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};
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$html2html->{rules}->{'^<@@endchapt>.*$'} = sub {
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STDOUT->print("</UL>\n") if ($in_section_list);
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if ($outfh->fileno != STDOUT->fileno) {
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&footing($outfh) if (!$super_page_mode);
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$outfh->close; $outfh = STDOUT;
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}
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};
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$html2html->{rules}->{'^<@@endsect>.*$'} = sub {
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STDOUT->print("</UL>\n") if (!$chapter_mode && $in_section_list);
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if (($outfh->fileno != STDOUT->fileno)
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&& ((!$chapter_mode) || (!$big_page_mode))) {
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&footing($outfh) if (!$super_page_mode);
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$outfh->close; $outfh = STDOUT;
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}
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};
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$html2html->{rules}->{'^<@@endssect>.*$'} = sub {
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if (($outfh->fileno != STDOUT->fileno)
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&& (!$chapter_mode) && (!$big_page_mode) && (!$super_page_mode)) {
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&footing($outfh); $outfh->close; $outfh = STDOUT;
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}
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};
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$html2html->{rules}->{'^<@@enddoc>.*$'} = sub { };
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$html2html->{rules}->{'^<@@label>(.*)$'} = sub {
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if (!defined($lprec->{$1})) {
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STDERR->print(qq(html2html: Problem with label "$1"\n)); next;
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}
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if ($skipnewline) {
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$headbuf = sprintf(qq(<A NAME="%s"></A> %s), $1, $headbuf);
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} else {
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$outfh->print(qq(<A NAME="$1"></A> ));
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}
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};
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$html2html->{rules}->{'^<@@ref>(.*)$'} = sub {
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my $tmp;
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$refname = $1;
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if (!defined($lprec->{$1})) {
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STDERR->print(qq(html2html: Problem with ref "$1"\n));
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$skipnewline++; next;
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}
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SWITCH: {
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$tmp = qq(<A HREF="#$1">), last SWITCH
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if ($lprec->{$1} == $filenum - 1);
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$tmp = qq(<A HREF="$firstname.$fileext#$1">), last SWITCH
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if ($lprec->{$1} == 0);
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$tmp = qq(<A HREF="$firstname-$lprec->{$1}.$fileext#$1">),
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last SWITCH;
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}
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if ($skipnewline) {
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$headbuf = "$headbuf$tmp";
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} else {
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$headbuf = $tmp;
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}
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$skipnewline++;
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};
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$html2html->{rules}->{'^<@@refnam>.*$'} = sub {
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$headbuf = "$headbuf$refname</A>\n";
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};
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$html2html->{rules}->{'^<@@endref>.*$'} = sub {
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if ($skipnewline == 1) {
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$outfh->print($headbuf); $skipnewline = -1;
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} elsif ($skipnewline == 2) {
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$skipnewline--;
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} else {
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STDERR->print("html2html: Problem with endref\n");
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$skipnewline--;
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}
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};
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# Default parsing rule
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$html2html->{defaultrule} = sub {
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$skipnewline++ if ($skipnewline < 0);
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if ($skipnewline) {
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chop; $headbuf = "$headbuf$_";
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} else {
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$outfh->print($_);
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}
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};
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# Finalize parsing process
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$html2html->{finish} = sub {
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# Finish footers
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if ($outfh->fileno != STDOUT->fileno) {
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if (!$super_page_mode) {
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&footing($outfh);
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$outfh->close;
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}
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}
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#
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if ($super_page_mode) {
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if ($toclevel > 0) { STDOUT->print("\n<HR>\n"); }
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$outfh->close if ($outfh->fileno != STDOUT->fileno);
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if ( -r $content_file ) {
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open CONTENT, "<$content_file"
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or die "Can't open content file\n";
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while (<CONTENT>) {
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STDOUT->print($_);
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}
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close CONTENT;
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unlink $content_file if (! $debug);
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}
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}
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# Finish the TOC; ensure "next" points to the first page.
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&browse_links(STDOUT, 1, 0) if (!$super_page_mode);
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#
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# add Footer
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if ( -r "$footer" ) {
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open FTRFILE, "<$footer" or die "Cannot open footer file\n";
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while (<FTRFILE>) {
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STDOUT->print($_);
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}
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close FTRFILE;
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} else {
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STDOUT->print("</BODY>\n</HTML>\n");
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}
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};
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###################################################################
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# Secondary Functions
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###################################################################
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# Print standard links
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sub browse_links {
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my ($outfh, $myfilenum, $top) = @_;
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return if ($super_page_mode);
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$outfh->print("<HR>\n") unless ($top);
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# NOTE: For pages where a next or prev button isn't appropriate, include
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# the graphic anyway - just don't make it a link. That way, the mouse
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# position of each button is unchanged from page to page.
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# Use the passed myfilenum since filenum may already be incremented
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# Next link (first)
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my $next = $use_imgs
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? qq(<IMG SRC="next.png" ALT="$nextlabel">)
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: qq($nextlabel);
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$next = qq(<A HREF="$firstname-$myfilenum.$fileext">$next</A>)
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if ($myfilenum < $filecount);
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$next = join "", $next, "\n";
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$outfh->print($next);
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# Previous link
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my $prev = $use_imgs
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? qq(<IMG SRC="prev.png" ALT="$prevlabel">)
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: qq($prevlabel);
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$prev = join "", qq(<A HREF="$firstname-), ($myfilenum - 2),
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qq(.$fileext">$prev</A>)
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if ($myfilenum >= 3);
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$prev = join "", $prev, "\n";
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$outfh->print($prev);
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# Table of contents link
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my $toc = $use_imgs
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? qq(<IMG SRC="toc.png" ALT="$toclabel">)
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: qq($toclabel);
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$toc = join "", qq(<A HREF="$firstname.$fileext#toc),
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§ion_num($secnr, 0), qq(">$toc</A>)
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if ($outfh->fileno != STDOUT->fileno);
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$toc = join "", $toc, "\n";
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$outfh->print($toc);
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print($outfh "<HR>\n") if ($top);
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}
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# Print end-of-file markup
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sub footing {
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my $outfh = shift;
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&browse_links($outfh, $filenum, 0);
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if ( -r "$footer" ) {
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open FTRFILE, "<$footer" or die "Cannot open footer file\n";
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while (<FTRFILE>) {
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$outfh->print($_);
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}
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close FTRFILE;
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} else {
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$outfh->print("</BODY>\n</HTML>\n");
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}
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}
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# Print top-of-file markup
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sub heading {
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my $outfh = shift; my $match;
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# Emit 3.2 HTML until somebody comes up with a better idea - CdG
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||
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if ( -r "$header" ) {
|
||
|
|
open HDRFILE, "<$header" or die "Cannot open header file\n";
|
||
|
|
while (<HDRFILE>) {
|
||
|
|
$outfh->print($_);
|
||
|
|
}
|
||
|
|
close HDRFILE;
|
||
|
|
} else {
|
||
|
|
$outfh->print(
|
||
|
|
qq(<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">\n));
|
||
|
|
$outfh->print("<HTML>\n<HEAD>\n");
|
||
|
|
}
|
||
|
|
open VERSFILE, "<$main::DataDir/VERSION" or die "Cannot open version file\n";
|
||
|
|
$version = <VERSFILE>;
|
||
|
|
close VERSFILE;
|
||
|
|
chop $version;
|
||
|
|
$outfh->print(
|
||
|
|
" <META NAME=\"GENERATOR\" CONTENT=\"LinuxDoc-Tools $version\">\n");
|
||
|
|
|
||
|
|
$outfh->print(" <TITLE>");
|
||
|
|
$match = $titlename;
|
||
|
|
$match =~ s/<[^>]*>//g;
|
||
|
|
$outfh->print($match);
|
||
|
|
if ($secnr > 0) {
|
||
|
|
$match = $sectname;
|
||
|
|
$match =~ s/<[^>]*>//g;
|
||
|
|
$outfh->print(": $match");
|
||
|
|
}
|
||
|
|
if ($ssecnr > 0) {
|
||
|
|
$match = $ssectname;
|
||
|
|
$match =~ s/<[^>]*>//g;
|
||
|
|
$outfh->print(": $match");
|
||
|
|
}
|
||
|
|
$outfh->print("</TITLE>\n");
|
||
|
|
|
||
|
|
if (!$super_page_mode) {
|
||
|
|
#
|
||
|
|
# <LINK> Information for next, previous, contents, etc...
|
||
|
|
#
|
||
|
|
$outfh->print(qq( <LINK HREF="$firstname-$filenum.$fileext" REL=next>),"\n")
|
||
|
|
if ($filenum < $filecount);
|
||
|
|
my $prev;
|
||
|
|
$prev = join "", qq( <LINK HREF="$firstname-), ($filenum - 2),
|
||
|
|
qq(.$fileext" REL=previous>)
|
||
|
|
if ($filenum >= 3);
|
||
|
|
$outfh->print($prev,"\n");
|
||
|
|
|
||
|
|
#
|
||
|
|
# Table of contents link
|
||
|
|
#
|
||
|
|
my $toc ;
|
||
|
|
$toc = join "", qq( <LINK HREF="$firstname.$fileext#toc),
|
||
|
|
§ion_num($secnr, 0), qq(" REL=contents>)
|
||
|
|
if ($outfh->fileno != STDOUT->fileno);
|
||
|
|
$outfh->print($toc,"\n");
|
||
|
|
} # (!$super_page_mode)
|
||
|
|
|
||
|
|
$outfh->print("</HEAD>\n<BODY>\n");
|
||
|
|
&browse_links($outfh, $filenum, 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
# Return the section and subsection as a dotted string
|
||
|
|
sub section_num {
|
||
|
|
my ($sec, $ssec) = @_;
|
||
|
|
my $l = "A";
|
||
|
|
|
||
|
|
if ($in_appendix) {
|
||
|
|
$sec--;
|
||
|
|
while ($sec) { $l++; $sec--; }
|
||
|
|
return("$l.$ssec") if ($ssec > 0);
|
||
|
|
return("$l");
|
||
|
|
} else {
|
||
|
|
return("$sec.$ssec") if ($ssec > 0);
|
||
|
|
return("$sec");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# Create a chapter head; start a new file, etc.
|
||
|
|
sub start_chapter {
|
||
|
|
my $sectname = shift;
|
||
|
|
|
||
|
|
if (!$super_page_mode && $outfh->fileno != STDOUT->fileno) {
|
||
|
|
&footing($outfh); $outfh->close;
|
||
|
|
}
|
||
|
|
$current = "SECTION"; $secnr++; $ssecnr = 0;
|
||
|
|
if ($super_page_mode) {
|
||
|
|
$outname = $content_file;
|
||
|
|
$outfh = new FileHandle ">>$outname"
|
||
|
|
or die qq(html2html: Fatal: Could not open file "$outname"\n);
|
||
|
|
if ($toclevel > 0) {
|
||
|
|
$headbuf = sprintf(
|
||
|
|
qq(<A NAME="s%s">%s.</A> <A HREF="#toc%s">%s</A>),
|
||
|
|
§ion_num($secnr, 0), §ion_num($secnr, 0),
|
||
|
|
§ion_num($secnr, 0),
|
||
|
|
$sectname);
|
||
|
|
STDOUT->printf(
|
||
|
|
qq(<P>\n<H2><A NAME="toc%s">%s.</A> <A HREF="%s#s%s">%s</A></H2>\n\n),
|
||
|
|
§ion_num($secnr, 0), §ion_num($secnr, 0),
|
||
|
|
"$firstname.$fileext", §ion_num($secnr, 0), $sectname);
|
||
|
|
} else {
|
||
|
|
$headbuf = sprintf(
|
||
|
|
qq(<A NAME="s%s">%s. %s</A>),
|
||
|
|
§ion_num($secnr, 0), §ion_num($secnr, 0),
|
||
|
|
$sectname);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$outname = "$firstname-$filenum.$fileext"; $filenum++;
|
||
|
|
$outfh = new FileHandle ">$outname"
|
||
|
|
or die qq(html2html: Fatal: Could not open file "$outname"\n);
|
||
|
|
&heading($outfh);
|
||
|
|
if ($toclevel > 0) {
|
||
|
|
$headbuf = sprintf(
|
||
|
|
qq(<A NAME="s%s">%s.</A> <A HREF="%s#toc%s">%s</A>),
|
||
|
|
§ion_num($secnr, 0), §ion_num($secnr, 0),
|
||
|
|
"$firstname.$fileext", §ion_num($secnr, 0),
|
||
|
|
$sectname);
|
||
|
|
STDOUT->printf(
|
||
|
|
qq(<P>\n<H2><A NAME="toc%s">%s.</A> <A HREF="%s">%s</A></H2>\n\n),
|
||
|
|
§ion_num($secnr, 0), §ion_num($secnr, 0),
|
||
|
|
$outname, $sectname);
|
||
|
|
} else {
|
||
|
|
$headbuf = sprintf(
|
||
|
|
qq(<A NAME="s%s">%s. %s</A>),
|
||
|
|
§ion_num($secnr, 0), §ion_num($secnr, 0),
|
||
|
|
$sectname);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$in_section_list = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
# Create a section; start a new file, etc.
|
||
|
|
sub start_section {
|
||
|
|
my $ssectname = shift;
|
||
|
|
|
||
|
|
$current = "SUBSECT"; $ssecnr++;
|
||
|
|
if ($toclevel > 1) {
|
||
|
|
if (!$in_section_list) {
|
||
|
|
STDOUT->print("<UL>\n"); $in_section_list = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($super_page_mode) {
|
||
|
|
if ($outfh->fileno != STDOUT->fileno && !$chapter_mode) {
|
||
|
|
$outfh->close;
|
||
|
|
}
|
||
|
|
$outname = $content_file;
|
||
|
|
$outfh = new FileHandle ">>$outname"
|
||
|
|
or die qq(html2html: Fatal: Could not open file "$outname"\n);
|
||
|
|
if ($toclevel > 1) {
|
||
|
|
$headbuf = sprintf(qq(<A NAME="ss%s">%s</A> <A HREF="#toc%s">%s</A>\n),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
$ssectname);
|
||
|
|
STDOUT->printf(
|
||
|
|
qq(<LI><A NAME="toc%s">%s</A> <A HREF="%s#ss%s">%s</A>\n),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
"$firstname.$fileext",
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
$ssectname);
|
||
|
|
} else {
|
||
|
|
$headbuf = sprintf(qq(<A NAME="ss%s">%s %s</A>\n),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
$ssectname);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if (!$big_page_mode) {
|
||
|
|
if ($outfh->fileno != STDOUT->fileno) {
|
||
|
|
&footing($outfh); $outfh->close;
|
||
|
|
}
|
||
|
|
$outname = "$firstname-$filenum.$fileext"; $filenum++;
|
||
|
|
$outfh = new FileHandle ">$outname"
|
||
|
|
or die qq(html2html: Fatal: Could not open file "$outname"\n);
|
||
|
|
heading($outfh);
|
||
|
|
|
||
|
|
# Since only one section is on any page,
|
||
|
|
# don't use # so that when we
|
||
|
|
# jump to this page, we see the browse
|
||
|
|
# links at the top of the page.
|
||
|
|
if ($toclevel > 1) {
|
||
|
|
$headbuf = sprintf("%s <A HREF=\"%s#toc%s\">%s</A>",
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
"$firstname.$fileext",
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
$ssectname);
|
||
|
|
STDOUT->printf(
|
||
|
|
qq(<LI><A NAME="toc%s">%s</A> <A HREF="%s">%s</A>\n),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
$outname, $ssectname);
|
||
|
|
} else {
|
||
|
|
$headbuf = sprintf("%s %s</A>",
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
$ssectname);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
# Since many sections are on one page, we need to use #
|
||
|
|
if ($toclevel > 1) {
|
||
|
|
$headbuf = sprintf(
|
||
|
|
qq(<A NAME="ss%s">%s</A> <A HREF="%s#toc%s">%s</A>\n),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
"$firstname.$fileext",
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
$ssectname);
|
||
|
|
STDOUT->printf(
|
||
|
|
qq(<LI><A NAME="toc%s">%s</A> <A HREF="%s#ss%s">%s</A>\n),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
$outname,
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
$ssectname);
|
||
|
|
} else {
|
||
|
|
$headbuf = sprintf(
|
||
|
|
qq(<A NAME="ss%s">%s %s</A>\n),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
§ion_num($secnr, $ssecnr),
|
||
|
|
$ssectname);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|