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|
#!/usr/bin/perl
# $Id: sgmlfmt.pl,v 1.16 1996/10/01 16:23:39 jfieber Exp $
# Copyright (C) 1996
# John R. Fieber. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY JOHN R. FIEBER AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL JOHN R. FIEBER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
# Format an sgml document tagged according to the linuxdoc DTD.
# by John Fieber <jfieber@freebsd.org> for the FreeBSD documentation
# project.
require 'newgetopt.pl';
#
# The SGML parser, and translation engine.
#
$sgmls = "sgmls";
$instant = "instant";
#
# Locate the DTD, an SGML declaration, and the replacement files
#
$doctype = "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 3.2//EN\">";
$dtdbase = "/usr/share/sgml/FreeBSD";
$dtd = "$dtdbase/linuxdoc.dtd";
$decl = "$dtdbase/linuxdoc.dcl";
#
# Things to clean up if we exit abnormally
#
@cleanfiles = ();
#
# Interrupt handler, remove scratch files.
#
sub sighandler {
local($sig) = @_;
unlink @cleanfiles;
exit(1);
}
$SIG{'HUP'} = 'sighandler';
$SIG{'INT'} = 'sighandler';
$SIG{'QUIT'} = 'sighandler';
#
# Display a usage message.
#
sub usage {
print "Usage:\n";
print "sgmlfmt -f <format> [-i <namea> ...] [-links] [-ssi] file\n";
print "where <format> is one of: ascii, html, koi8-r, latex, latin1, ps, roff\n";
}
#
# Look for the file specified on the command line
#
sub getfile {
local($filearg) = @_;
if (-f "$filearg.sgml") {
$file = "$filearg.sgml";
}
elsif (-f $filearg) {
$file = $filearg;
}
else {
return 0;
}
$fileroot = $file;
$fileroot =~ s/.*\///; # drop the path
$fileroot =~ s/\.sgml$//; # drop the .sgml
$filepath = $file;
$filepath =~ s/\/*[^\/]*$//;
if ($filepath ne "") {
$ENV{"SGML_PATH"} .= ":$filepath/%S:%S";
}
return 1;
}
#
# A function to run sgmls and instant on the input file.
#
# Arguments:
# 1. A file handle for the output
# 2. A translation file
#
sub sgmlparse {
local($ifhandle, $replacement) = @_;
$defines = join(" -i ", @opt_i);
if ($defines ne "") {
$defines = "-i $defines";
}
open($ifhandle, "$sgmls $defines $decl $file | " .
"$instant -Dfilename=$fileroot -t linuxdoc-${replacement}.ts |");
}
#
# Generate roff output
#
sub gen_roff {
@cleanfiles = (@cleanfiles, "${fileroot}.roff");
open (outfile, ">$fileroot.roff");
&sgmlparse(infile, "roff");
while (<infile>) {
print outfile;
}
close(infile);
close(outfile);
}
#
# Generate something from roff output
#
sub do_groff {
local($driver, $postproc) = @_;
@cleanfiles = (@cleanfiles, "${fileroot}.trf", "${fileroot}.tmp",
"${fileroot}.qrf", "${fileroot}.${driver}");
open (outfile, ">$fileroot.trf");
&sgmlparse(infile, "roff");
while (<infile>) {
print outfile;
}
close(infile);
close(outfile);
system("groff -T ${driver} -t ${fileroot}.trf ${postproc} > ${fileroot}.${driver}");
# If foo.tmp has been created, then there are cross references
# in the file and we need a second pass to resolve them correctly.
if (stat("${fileroot}.tmp")) {
system("groff -T ${driver} -t ${fileroot}.trf ${postproc} > ${fileroot}.${driver}");
unlink("${fileroot}.qrf");
}
unlink("${fileroot}.trf");
}
#
# Generate LaTeX output
#
sub gen_latex {
@cleanfiles = (@cleanfiles, "${fileroot}.latex");
open(outfile, ">$fileroot.latex");
&sgmlparse(infile, "latex");
while (<infile>) {
print outfile;
}
close(infile);
close(outfile);
}
#
# Generate HTML output.
#
# HTML is generated in two passes.
#
# The first pass takes the output from sgmlsasp and gathers information
# about the structure of the document that is used in the sceond pass
# for splitting the file into separate files. Targets for cross
# references are also stored in this pass.
#
# Based on the information from the first pass, the second pass
# generates a numbered series of HTML files, a "toplevel" file
# containing the title, author, abstract and a brief table of
# contents. A detailed table of contents is also generated. The
# second pass generates links for cross references and URLs.
#
# Tunable parameters
#
$maxlevel = 3; # max section depth
$num_depth = 4; # depth of numbering
$m_depth = 2; # depth of menus
$sc = 0; # section counter
$filecount = 0; # file counter
# Other variables:
#
# st_xxxx - Section Table. Arrays containing information about a
# given section. To be accesssed via the section counter $sc.
#
# st_ol - The output level of the given section. I.E. how many
# levels from the table of contents does it lie in terms
# of HTML files which is distinct from <sect1>, <sect2> etc.
# levels.
#
# st_sl - The absolute depth of a section. Contrast st_ol.
#
# st_num - The section number in the form X.Y.Z....
#
# st_file - The HTML file the section belongs to.
#
# st_header - The text of the section title.
#
# st_parent - The section number of the given sections parent.
sub gen_html {
local($i, $sl);
# Remove any lingering link file
unlink("${fileroot}.ln");
$tmpfile = "/tmp/sgmlf.$$";
@cleanfiles = (@cleanfiles, "$tmpfile", "${fileroot}.html",
"${fileroot}_toc.html", "${fileroot}.ln");
open(bar, ">$tmpfile");
# print STDERR "(Pass 1...";
&sgmlparse(foo, "html");
while (<foo>) {
print bar;
# count up the number of files to be generated
# and gather assorted info about the document structure
if (/^<\@\@sect>/) {
$sl++; # current section level
$sc++; # current section number
$st_sl[$sc] = $sl;
# In case this section has subsections, set the parent
# pointer for this level to point at this section.
$parent_pointer[$sl] = $sc;
# Figure out who is the parent if this section.
$st_parent[$sc] = $parent_pointer[$sl - 1];
# Per level counters
$counter[$sl]++;
$counter[$sl + 1] = 0;
# calculate the section number in the form x.y.z.
if ($sl <= $num_depth) {
$st_num[$sc] = $st_num[$st_parent[$sc]] . "$counter[$sl].";
}
# calculate the file number and output level
if ($sl <= $maxlevel) {
$filecount++;
$st_ol[$sc] = $sl;
@cleanfiles = (@cleanfiles, "${fileroot}${filecount}.html");
}
else {
$st_ol[$sc] = $maxlevel;
}
$st_file[$sc] = $filecount;
# Calculate the highest level node in which this
# node should appear as a menu item.
$st_pl[$sc] = $sl - $m_depth;
if ($st_pl[$sc] < 0) {
$st_pl[$sc] = 0;
}
if ($st_pl[$sc] > $maxlevel) {
$st_pl[$sc] = $maxlevel;
}
}
if (/^<\@\@endsect>/) {
$sl--;
}
# record section titles
if (/^<\@\@head>/) {
chop;
s/^<\@\@head>//;
$st_header[$sc] = $_;
}
# record the section number that a label occurs in
if (/^<\@\@label>/) {
chop;
s/^<\@\@label>//;
if ($references{$_} eq "") {
$references{$_} = "$filecount";
if ($opt_links) {
&extlink($_, "${fileroot}${filecount}.html");
}
}
else {
print STDERR "Warning: the label `$_' is multiply-defined.\n";
}
}
}
close(bar);
open(foofile, $tmpfile);
&html2html(foofile, "boo");
unlink($tmpfile);
}
#
# HTML conversion, pass number 2
#
sub html2html {
local($infile, $outfile) = @_;
local($i);
$sc = 0;
push(@scs, $sc);
open(tocfile, ">${fileroot}_toc.html");
print tocfile "$doctype\n<HTML>\n";
while (<$infile>) {
# change `<' and `>' to `<' and `>' in <pre></pre>
if (/<pre>/.../<\/pre>/) {
s/</\</g;
s/\<([\/]*)pre>/<\1pre>/g;
s/>/\>/g;
s/<([\/]*)pre\>/<\1pre>/g;
}
# remove extraneous empty paragraphs (it is arguable that this
# is really a bug with the DTD, but changing it would break
# almost every document written to this DTD.)
s/<p><\/p>//;
tagsw: {
# titles and headings
if (s/^<\@\@title>//) {
chop;
$st_header[0] = $_;
$st_parent[0] = -1;
print tocfile "<HEAD>\n<TITLE>$st_header[0]</TITLE>\n</HEAD>\n";
print tocfile "<H1>$st_header[0]</H1>\n";
$header[$st_ol[$sc]] =
"$doctype\n<HTML>\n<HEAD>\n<TITLE>$st_header[0]</TITLE>\n" .
"</HEAD>\n$BODY\n";
$header[$st_ol[$sc]] .= $html_header;
if ($opt_ssi) { # Server Side Include hook
$header[$st_ol[$sc]] .=
"<!--#include virtual=\"./$fileroot.hdr\" -->";
}
$header[$st_ol[$sc]] .= "\n<H1>$st_header[0]</H1>\n";
$footer[$st_ol[$sc]] = "\n";
$footer[$st_ol[$sc]] .= $html_footer;
if ($opt_ssi) { # Server Side Include hook
$footer[$st_ol[$sc]] .=
"<!--#include virtual=\"./$fileroot.ftr\" -->";
}
$footer[$st_ol[$sc]] .= "\n</BODY>\n</HTML>\n";
last tagsw;
}
#
# HEADER begin
#
if (s/^<\@\@head>//) {
chop;
if ($part == 1) {
$text[0] .= "<H1>Part $partnum:<BR>$_";
last tagsw;
}
$href = "\"${fileroot}$st_file[$sc].html#$sc\"";
# set up headers and footers
if ($st_sl[$sc] > 0 && $st_sl[$sc] <= $maxlevel) {
$header[$st_ol[$sc]] =
"$doctype\n<HTML>\n<HEAD>\n<TITLE>$_</TITLE>\n</HEAD>\n$BODY\n";
$header[$st_ol[$sc]] .= $html_header;
if ($opt_ssi) { # Server Side Include hook
$header[$st_ol[$sc]] .=
"<!--#include virtual=\"./$fileroot.hdr$st_ol[$sc]\" -->";
}
$header[$st_ol[$sc]] .= "\n$navbar[$st_ol[$sc]]\n<HR NOSHADE>\n";
$footer[$st_ol[$sc]] = "<HR NOSHADE>\n$navbar[$st_ol[$sc]]\n";
$footer[$st_ol[$sc]] .= $html_footer;
if ($opt_ssi) { # Server Side Include hook
$footer[$st_ol[$sc]] .=
"<!--#include virtual=\"./$fileroot.ftr$st_ol[$sc]\" -->";
}
$footer[$st_ol[$sc]] .= "\n</BODY>\n</HTML>\n";
}
# Add this to the master table of contents
print tocfile "<DD>$st_num[$sc] " .
"<A HREF=$href>$_";
# Calculate the <H?> level to use in the HTML file
$hlevel = $st_sl[$sc] - $st_ol[$sc] + 2;
$shlevel = $st_sl[$sc] - $st_ol[$sc] + 3;
$i = $st_ol[$sc];
# Add the section header
$text[$i] .= "<H$hlevel><A NAME=\"$sc\"></A>$st_num[$sc] $_";
$i--;
# And also to the parent
if ($st_sl[$sc] == $st_ol[$sc] && $i >= 0) {
$text[$i] .= "<H$shlevel>$st_num[$sc] " .
"<A HREF=$href>$_";
$i--;
}
# and to the grandparents
for (; $i >= $st_pl[$sc]; $i--) {
$text[$i] .= "<DD>$st_num[$sc] " .
"<A HREF=$href>$_";
}
last tagsw;
}
#
# HEADER end
#
if (s/^<\@\@endhead>//) {
if ($part == 1) {
$text[0] .= "</H1>\n";
$part = 0;
last tagsw;
}
print tocfile "</A>\n";
$i = $st_ol[$sc];
# Close the section header
$text[$i] .= "</H$hlevel>\n";
$i--;
# in the parent...
if ($st_sl[$sc] == $st_ol[$sc] && $i >= 0) {
$text[$i] .= "</A></H$shlevel>\n";
$i--;
}
# in the grandparent...
for (; $i >= $st_pl[$sc]; $i--) {
$text[$i] .= "</A></DD>\n";
}
last tagsw;
}
# sectioning
if (s/^<\@\@part>//) {
$part = 1;
$partnum++;
last tagsw;
}
#
# BEGINNING of a section
#
if (s/^<\@\@sect>//) {
# Increment the section counter and save it on a stack
# for future reference.
$sc++;
push(@scs, $sc);
# Set up the navigation bar
if ($st_file[$sc] > $st_file[$sc - 1]) {
&navbar($st_file[$sc], $filecount, $sc);
}
# Prepare for menu entries in the table of contents and
# parent file(s).
if ($st_sl[$sc - 1] < $st_sl[$sc]) {
print tocfile "<DL>\n";
$i = $st_ol[$sc] - 1 - ($st_sl[$sc] == $st_ol[$sc]);
for (; $i >= $st_pl[$sc]; $i--) {
$text[$i] .= "<DL>\n";
}
}
last tagsw;
}
#
# END of a section
#
if (s/^<\@\@endsect>//) {
# Remember the section number! Subsections may have
# altered the global $sc variable.
local ($lsc) = pop(@scs);
# Close off subsection menus we may have created in
# parent file(s).
if ($st_sl[$lsc] > $st_sl[$sc + 1]) {
print tocfile "</DL>\n";
if ($st_sl[$lsc] > 1) {
print tocfile "</DD>\n";
}
$i = $st_ol[$lsc] - 1 - ($st_sl[$lsc] == $st_ol[$lsc]);
for (; $i >= $st_pl[$lsc]; $i--) {
$text[$i] .= "</DL>\n";
}
}
# If this section is below $maxlevel, write it now.
if ($st_sl[$lsc] <= $maxlevel) {
open(SECOUT, ">${fileroot}$st_file[$lsc].html");
print SECOUT "$header[$st_ol[$lsc]] $text[$st_ol[$lsc]] " .
"$footer[$st_ol[$lsc]]";
$text[$st_ol[$lsc]] = "";
close(SECOUT);
}
last tagsw;
}
# cross references
if (s/^<\@\@label>//) {
chop;
$text[$st_ol[$sc]] .= "<A NAME=\"$_\"></A>";
last tagsw;
}
if (s/^<\@\@ref>//) {
chop;
$refname = $_;
if ($references{$_} eq "") {
print "Warning: Reference to $_ has no defined target\n";
}
else {
$text[$st_ol[$sc]] .=
"<A HREF=\"${fileroot}$references{$_}.html#$_\">";
}
last tagsw;
}
if (s/^<\@\@endref>//) {
$text[$st_ol[$sc]] .= "</A>";
last tagsw;
}
if (s/^<\@\@refnam>//) {
$text[$st_ol[$sc]] .= "$refname";
last tagsw;
}
# If nothing else did anything with this line, just print it.
$text[$st_ol[$sc]] .= "$_";
}
}
print tocfile "</HTML>\n";
open(SECOUT, ">$fileroot.html");
print SECOUT "$header[0] $text[0] $footer[0]";
close(SECOUT);
close tocfile;
}
# navbar
#
# Generate a navigation bar to go on the top and bottom of the page.
sub navbar {
local ($fnum, $fmax, $sc) = @_;
local ($i, $itext, $prv, $nxt, $colon);
$colon = "<b>:</b>";
# Generate the section hierarchy
$navbar[$st_ol[$sc]] =
"<A HREF=\"${fileroot}.html\"><EM>$st_header[0]</EM></A>\n";
$i = $st_parent[$sc];
while ($i > 0) {
$itext = " $colon <A HREF=\"${fileroot}$st_file[$i].html\"><EM>$st_header[$i]</EM></A>\n$itext";
$i = $st_parent[$i];
}
$navbar[$st_ol[$sc]] .= "$itext $colon <EM>$st_header[$sc]</EM><BR>\n";
# Generate previous and next pointers
# Previous pointer must be in a different file AND must be at the
# same or higher section level. If the current node is the
# beginning of a chapter, then previous will go to the beginning
# of the previous chapter, not the end of the previous chapter.
$prv = $sc;
while ($prv >= 0 && $st_file[$prv] >= $st_file[$sc] - 1) {
$prv--;
}
$prv++;
$navbar[$st_ol[$sc]] .=
"<b>Previous:</b> <A HREF=\"${fileroot}$st_file[$prv].html\"><EM>$st_header[$prv]</EM></A><BR>\n";
# Then next pointer must be in a higher numbered file OR the home
# page of the document.
$nxt = $sc;
if ($st_file[$nxt] == $filecount) {
$nxt = 0;
}
else {
while ($st_file[$nxt] == $st_file[$sc]) {
$nxt++;
}
}
$navbar[$st_ol[$sc]] .=
"<b>Next:</b> <A HREF=\"${fileroot}$st_file[$nxt].html\"><EM>$st_header[$nxt]</EM></A>\n";
$navbar[$st_ol[$sc]] .= "\n";
}
# extlink
#
# Build a shell script to create symbolic links from the name in
# a reference to the numbered
# html file. Since the file number that any given section has is
# subject to change as the document goes through revisions, this allows
# for a fixed target that separate documents can hook into.
#
# Slashes (/) in the reference are converted to percents (%) while
# spaces ( ) are converted to underscores (_);
sub extlink {
local ($ref, $fn) = @_;
$ref =~ s/\//%/g;
$ref =~ s/ /_/g;
$file = "$ref.html";
if (!fileno(LINKFILE)) {
open(LINKFILE, ">${fileroot}.ln");
}
print LINKFILE "ln -fs $fn $file\n";
}
# Now, read the command line and take appropriate action
sub main {
# Check arguments
if (!&NGetOpt('f=s', 'links', 'ssi', 'i:s@', 'hdr=s', 'ftr=s', 'white')) {
&usage;
exit 1;
}
if (@ARGV == 0) {
print "An input file must be specified.\n";
&usage;
exit 1;
}
if (&getfile($ARGV[0]) == 0) {
print "Cannot locate specified file: $ARGV[0]\n";
&usage;
exit 1;
}
# Generate output
if ($opt_f eq 'html') {
if ($opt_hdr) {$html_header = &gethf($opt_hdr);}
if ($opt_ftr) {$html_footer = &gethf($opt_ftr);}
if ($opt_white) {$BODY = "<BODY text=\"#000000\" bgcolor=\"#ffffff\">";}
else {$BODY = "<BODY>"}
&gen_html();
}
elsif ($opt_f eq 'latex' || $opt_f eq 'latex') {
&gen_latex();
}
elsif ($opt_f eq 'roff') {
&gen_roff();
}
elsif ($opt_f eq 'ascii') {
&do_groff("ascii", "| col");
}
elsif ($opt_f eq 'latin1') {
&do_groff("latin1", "| col");
}
elsif ($opt_f eq 'koi8-r') {
&do_groff("koi8-r", "| col");
}
elsif ($opt_f eq 'ps') {
&do_groff("ps", "");
}
else {
if ($opt_f eq "") {
print "An output format must be specified with the -f option.\n";
}
else {
print "\"$opt_f\" is an unknown output format.\n";
}
&usage;
exit 1;
}
}
&main;
exit 0;
sub getdate {
@months = ("January", "February", "March", "April", "May","June",
"July", "August", "September", "October", "November", "December");
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
$year += 1900;
return "$months[$mon] $mday, $year";
}
sub gethf {
local ($file) = @_;
$date = &getdate;
$data = "";
if (open(IN, $file)) {
while (<IN>) {
s/\@\@UPDATE\@\@/Updated $date/;
$data .= $_;
}
close(IN);
}
return $data;
}
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