723 lines
17 KiB
Perl
Executable File
723 lines
17 KiB
Perl
Executable File
#!/usr/bin/perl
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# $Id: sgmlfmt.pl,v 1.8 1995/10/07 22:28:34 jfieber Exp $
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# Format an sgml document tagged according to the linuxdoc DTD.
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# by John Fieber <jfieber@freebsd.org> for the FreeBSD documentation
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# project.
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#
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# Bugs:
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#
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# Text lines that start with a period (.) confuse the conversions that
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# use groff. The workaround is to make sure the SGML source doesn't
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# have any periods at the beginning of a line.
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#
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# Although legal by the DTD, it the ascii formatting gets botched if
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# the <heading></heading> tags are omitted following a <sect?>.
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#
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# Beginning and end tags for the <tag> element must occur on the same line.
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#
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# The whole approach of using sgmlsasp and passing a few things
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# through for processing by this script is doomed. This whole thing
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# needs to be re-thought and a better DTD should be used anyway.
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#
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#######################################################################
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# Look in a couple places for the SGML DTD and replacement files
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#
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require 'newgetopt.pl';
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if (-d "$ENV{'HOME'}/lib/sgml/FreeBSD") {
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$sgmldir = "$ENV{'HOME'}/lib/sgml";
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}
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elsif (-d "$ENV{'HOME'}/sgml/FreeBSD") {
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$sgmldir = "$ENV{'HOME'}/sgml";
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}
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elsif (-d "/usr/share/sgml/FreeBSD" ) {
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$sgmldir = "/usr/share/sgml";
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}
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else {
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die "Cannot locate sgml files!\n";
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}
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#
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# Locate the DTD, an SGML declaration, and the replacement files
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#
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$dtdbase = "$sgmldir/FreeBSD";
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$dtd = "$dtdbase/dtd/linuxdoc";
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if (-f "$dtd.dec") {
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$decl = "$dtd.dec";
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}
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else {
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$decl = "";
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}
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$replbase = "$dtdbase/rep";
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if (! $ENV{"SGML_PATH"}) {
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$ENV{"SGML_PATH"} = "$sgmldir/%O/%C/%T";
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}
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sub usage {
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print "Usage:\n";
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print "sgmlfmt -f <format> [-i <namea> ...] [-links] [-ssi] file\n";
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print "where <format> is one of: html, latex, ascii, nroff\n";
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}
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#
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# Look for the file specified on the command line
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#
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sub getfile {
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local($filearg) = @_;
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if (-f "$filearg.sgml") {
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$file = "$filearg.sgml";
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}
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elsif (-f $filearg) {
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$file = $filearg;
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}
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else {
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return 0;
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}
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$fileroot = $file;
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$fileroot =~ s/.*\///; # drop the path
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$fileroot =~ s/\.sgml$//; # drop the .sgml
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$filepath = $file;
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$filepath =~ s/\/*[^\/]*$//;
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if ($filepath eq "") {
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$ENV{"SGML_PATH"} .= ":.";
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}
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else {
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$ENV{"SGML_PATH"} .= ":$filepath/%S:.";
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}
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return 1;
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}
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#
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# A function to run sgmls and sgmlsasp on the input file.
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#
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# Arguments:
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# 1. A file handle for the output
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# 2. A replacement file (directory actually)
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#
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sub sgmlparse {
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local($fhandle, $replacement) = @_;
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$defines = join(" -i ", @opt_i);
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if ($defines ne "") {
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$defines = "-i $defines";
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}
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$ENV{'SGML_PATH'} = "$replbase/$replacement.%N:$ENV{'SGML_PATH'}";
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open($fhandle, "sgmls $defines $decl $file | sgmlsasp $replbase/$replacement.mapping |");
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}
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#
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# Generate nroff output
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#
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sub gen_nroff {
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open (outfile, ">$fileroot.nroff");
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&sgmlparse(infile, "nroff");
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$\ = "\n"; # automatically add newline on print
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while (<infile>) {
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chop;
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# This is supposed to ensure that no text line starts
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# with a dot (.), thus confusing groff, but it doesn't
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# appear to work.
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unless (/^\.DS/.../^\.DE/) {
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s/^[ \t]{1,}(.*)/$1/g;
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}
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s/^\.[ \t].*/\\\&$&/g;
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print outfile;
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}
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$\ = "";
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close(infile);
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close(outfile);
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}
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#
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# Generate ASCII output using groff
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#
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sub gen_ascii {
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&sgmlparse(infile, "nroff");
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open(outfile, "| groff -T ascii -t -ms | col -b > $fileroot.ascii");
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while (<infile>) {
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print outfile;
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}
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close(infile);
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close(outfile);
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}
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#
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# Generate Postscript output using groff (this is suboptimal
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# for printed output!)
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#
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sub gen_ps {
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&sgmlparse(infile, "grops");
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open(outfile, "| groff -T ps -t -ms > $fileroot.ps");
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while (<infile>) {
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print outfile;
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}
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close(infile);
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close(outfile);
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}
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#
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# Generate LaTeX output
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#
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sub gen_latex {
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open(outfile, ">$fileroot.tex");
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&sgmlparse(infile, "latex");
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while (<infile>) {
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print outfile;
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}
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close(infile);
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close(outfile);
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}
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#
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# Generate HTML output.
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#
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# HTML is generated in two passes.
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#
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# The first pass takes the output from sgmlsasp and gathers information
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# about the structure of the document that is used in the sceond pass
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# for splitting the file into separate files. Targets for cross
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# references are also stored in this pass.
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#
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# Based on the information from the first pass, the second pass
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# generates a numbered series of HTML files, a "toplevel" file
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# containing the title, author, abstract and a brief table of
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# contents. A detailed table of contents is also generated. The
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# second pass generates links for cross references and URLs.
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#
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# Tunable parameters
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#
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$maxlevel = 3; # max section depth
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$num_depth = 4; # depth of numbering
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$m_depth = 2; # depth of menus
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$sc = 0; # section counter
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$filecount = 0; # file counter
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# Other variables:
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#
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# st_xxxx - Section Table. Arrays containing information about a
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# given section. To be accesssed via the section counter $sc.
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#
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# st_ol - The output level of the given section. I.E. how many
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# levels from the table of contents does it lie in terms
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# of HTML files which is distinct from <sect1>, <sect2> etc.
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# levels.
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#
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# st_sl - The absolute depth of a section. Contrast st_ol.
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#
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# st_num - The section number in the form X.Y.Z....
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#
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# st_file - The HTML file the section belongs to.
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#
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# st_header - The text of the section title.
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#
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# st_parent - The section number of the given sections parent.
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sub gen_html {
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local($i, $sl);
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$tmpfile = "/tmp/sgmlf.$$";
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open(bar, ">$tmpfile");
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# print STDERR "(Pass 1...";
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&sgmlparse(foo, "html");
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while (<foo>) {
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print bar;
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# count up the number of files to be generated
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# and gather assorted info about the document structure
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if (/^<\@\@sect>/) {
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$sl++; # current section level
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$sc++; # current section number
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$st_sl[$sc] = $sl;
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# In case this section has subsections, set the parent
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# pointer for this level to point at this section.
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$parent_pointer[$sl] = $sc;
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# Figure out who is the parent if this section.
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$st_parent[$sc] = $parent_pointer[$sl - 1];
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# Per level counters
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$counter[$sl]++;
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$counter[$sl + 1] = 0;
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# calculate the section number in the form x.y.z.
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if ($sl <= $num_depth) {
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$st_num[$sc] = $st_num[$st_parent[$sc]] . "$counter[$sl].";
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}
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# calculate the file number and output level
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if ($sl <= $maxlevel) {
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$filecount++;
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$st_ol[$sc] = $sl;
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}
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else {
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$st_ol[$sc] = $maxlevel;
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}
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$st_file[$sc] = $filecount;
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# Calculate the highest level node in which this
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# node should appear as a menu item.
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$st_pl[$sc] = $sl - $m_depth;
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if ($st_pl[$sc] < 0) {
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$st_pl[$sc] = 0;
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}
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if ($st_pl[$sc] > $maxlevel) {
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$st_pl[$sc] = $maxlevel;
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}
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}
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if (/^<\@\@endsect>/) {
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$sl--;
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}
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# record section titles
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if (/^<\@\@head>/) {
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chop;
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s/^<\@\@head>//;
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$st_header[$sc] = $_;
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}
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# record the section number that a label occurs in
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if (/^<\@\@label>/) {
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chop;
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s/^<\@\@label>//;
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if ($references{$_} eq "") {
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$references{$_} = "$filecount";
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if ($opt_links) {
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&extlink($_, "${fileroot}${filecount}.html");
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}
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}
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else {
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print STDERR "Warning: the label `$_' is multiply-defined.\n";
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}
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}
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}
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close(bar);
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open(foofile, $tmpfile);
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&html2html(foofile, "boo");
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unlink($tmpfile);
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}
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#
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# HTML conversion, pass number 2
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#
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sub html2html {
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local($infile, $outfile) = @_;
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local($i);
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$sc = 0;
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push(@scs, $sc);
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open(tocfile, ">${fileroot}_toc.html");
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print tocfile "<HTML>\n";
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while (<$infile>) {
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# change `<' and `>' to `<' and `>' in <pre></pre>
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if (/<pre>/.../<\/pre>/) {
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s/</\</g;
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s/\<([\/]*)pre>/<\1pre>/g;
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s/>/\>/g;
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s/<([\/]*)pre\>/<\1pre>/g;
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}
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# remove extraneous empty paragraphs (it is arguable that this
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# is really a bug with the DTD, but changing it would break
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# almost every document written to this DTD.)
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s/<p><\/p>//;
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tagsw: {
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# titles and headings
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if (s/^<\@\@title>//) {
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chop;
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$st_header[0] = $_;
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$st_parent[0] = -1;
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print tocfile "<HEAD>\n<TITLE>$st_header[0]</TITLE>\n</HEAD>\n";
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print tocfile "<H1>$st_header[0]</H1>\n";
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$header[$st_ol[$sc]] =
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"<HTML>\n<HEAD>\n<TITLE>$st_header[0]</TITLE>\n" .
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"</HEAD>\n<BODY>\n";
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if ($opt_ssi) { # Server Side Include hook
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$header[$st_ol[$sc]] .=
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"<!--#include virtual=\"./$fileroot.hdr\" -->";
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}
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$header[$st_ol[$sc]] .= "\n<H1>$st_header[0]</H1>\n";
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$footer[$st_ol[$sc]] = "\n";
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if ($opt_ssi) { # Server Side Include hook
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$footer[$st_ol[$sc]] .=
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"<!--#include virtual=\"./$fileroot.ftr\" -->";
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}
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$footer[$st_ol[$sc]] .= "\n</BODY>\n</HTML>\n";
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last tagsw;
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}
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#
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# HEADER begin
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#
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if (s/^<\@\@head>//) {
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chop;
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if ($part == 1) {
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$text[0] .= "<H1>Part $partnum:<BR>$_";
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last tagsw;
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}
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$href = "\"${fileroot}$st_file[$sc].html#$sc\"";
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# set up headers and footers
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if ($st_sl[$sc] > 0 && $st_sl[$sc] <= $maxlevel) {
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$header[$st_ol[$sc]] =
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"<HTML>\n<HEAD>\n<TITLE>$_</TITLE>\n</HEAD>\n<BODY>\n";
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if ($opt_ssi) { # Server Side Include hook
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$header[$st_ol[$sc]] .=
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"<!--#include virtual=\"./$fileroot.hdr$st_ol[$sc]\" -->";
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}
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$header[$st_ol[$sc]] .= "\n$navbar[$st_ol[$sc]]\n<HR>\n";
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$footer[$st_ol[$sc]] = "<HR>\n$navbar[$st_ol[$sc]]\n";
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if ($opt_ssi) { # Server Side Include hook
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$footer[$st_ol[$sc]] .=
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"<!--#include virtual=\"./$fileroot.ftr$st_ol[$sc]\" -->";
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}
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$footer[$st_ol[$sc]] .= "\n</BODY>\n</HTML>\n";
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}
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# Add this to the master table of contents
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print tocfile "<DD>$st_num[$sc] " .
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"<A HREF=$href>$_";
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# Calculate the <H?> level to use in the HTML file
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$hlevel = $st_sl[$sc] - $st_ol[$sc] + 2;
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$shlevel = $st_sl[$sc] - $st_ol[$sc] + 3;
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$i = $st_ol[$sc];
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# Add the section header
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$text[$i] .= "<H$hlevel><A NAME=\"$sc\"></A>$st_num[$sc] $_";
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$i--;
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# And also to the parent
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if ($st_sl[$sc] == $st_ol[$sc] && $i >= 0) {
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$text[$i] .= "<H$shlevel>$st_num[$sc] " .
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"<A HREF=$href>$_";
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$i--;
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}
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# and to the grandparents
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for (; $i >= $st_pl[$sc]; $i--) {
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$text[$i] .= "<DD>$st_num[$sc] " .
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"<A HREF=$href>$_";
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}
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last tagsw;
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}
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#
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# HEADER end
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#
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if (s/^<\@\@endhead>//) {
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if ($part == 1) {
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$text[0] .= "</H1>\n";
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$part = 0;
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last tagsw;
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}
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print tocfile "</A></DD>\n";
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$i = $st_ol[$sc];
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# Close the section header
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$text[$i] .= "</H$hlevel>\n";
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$i--;
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# in the parent...
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if ($st_sl[$sc] == $st_ol[$sc] && $i >= 0) {
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$text[$i] .= "</A></H$shlevel>\n";
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$i--;
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}
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# in the grandparent...
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for (; $i >= $st_pl[$sc]; $i--) {
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$text[$i] .= "</A></DD>\n";
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}
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last tagsw;
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}
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# sectioning
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if (s/^<\@\@part>//) {
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$part = 1;
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$partnum++;
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last tagsw;
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}
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#
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# BEGINNING of a section
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#
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if (s/^<\@\@sect>//) {
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# Increment the section counter and save it on a stack
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# for future reference.
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$sc++;
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push(@scs, $sc);
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# Set up the navigation bar
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if ($st_file[$sc] > $st_file[$sc - 1]) {
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&navbar($st_file[$sc], $filecount, $sc);
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}
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# Prepare for menu entries in the table of contents and
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# parent file(s).
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if ($st_sl[$sc - 1] < $st_sl[$sc]) {
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print tocfile "<DL>\n";
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$i = $st_ol[$sc] - 1 - ($st_sl[$sc] == $st_ol[$sc]);
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for (; $i >= $st_pl[$sc]; $i--) {
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$text[$i] .= "<DL>\n";
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}
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}
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last tagsw;
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}
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#
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# END of a section
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#
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if (s/^<\@\@endsect>//) {
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# Remember the section number! Subsections may have
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# altered the global $sc variable.
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local ($lsc) = pop(@scs);
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# Close off subsection menus we may have created in
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# parent file(s).
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if ($st_sl[$lsc] > $st_sl[$sc + 1]) {
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print tocfile "</DL>\n";
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$i = $st_ol[$lsc] - 1 - ($st_sl[$lsc] == $st_ol[$lsc]);
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for (; $i >= $st_pl[$lsc]; $i--) {
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$text[$i] .= "</DL>\n";
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}
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}
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# If this section is below $maxlevel, write it now.
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if ($st_sl[$lsc] <= $maxlevel) {
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open(SECOUT, ">${fileroot}$st_file[$lsc].html");
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print SECOUT "$header[$st_ol[$lsc]] $text[$st_ol[$lsc]] " .
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"$footer[$st_ol[$lsc]]";
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$text[$st_ol[$lsc]] = "";
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close(SECOUT);
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}
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last tagsw;
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}
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# cross references
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|
if (s/^<\@\@label>//) {
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chop;
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$text[$st_ol[$sc]] .= "<A NAME=\"$_\"></A>";
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last tagsw;
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}
|
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if (s/^<\@\@ref>//) {
|
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chop;
|
|
$refname = $_;
|
|
if ($references{$_} eq "") {
|
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print "Warning: Reference to $_ has no defined target\n";
|
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}
|
|
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</A>";
|
|
last tagsw;
|
|
}
|
|
# URLs
|
|
if (s/^<\@\@url>//) {
|
|
chop;
|
|
$urlname = $_;
|
|
$text[$st_ol[$sc]] .= "<A HREF=\"$urlname\">";
|
|
last tagsw;
|
|
}
|
|
if (s/^<\@\@urlnam>//) {
|
|
$text[$st_ol[$sc]] .= "$urlname</A>";
|
|
last tagsw;
|
|
}
|
|
if (s/^<\@\@endurl>//) {
|
|
# $text[$st_ol[$sc]] .= "</A>";
|
|
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[$sc]] .= "\n";
|
|
|
|
}
|
|
|
|
|
|
# extlink
|
|
#
|
|
# creates a symbolic link from the name in a reference to the numbered
|
|
# html file. Since the file number that any given section has is
|
|
# subject to change as the document goes through revisions, this allows
|
|
# for a fixed target that separate documents can hook into.
|
|
#
|
|
# Slashes (/) in the reference are converted to percents (%) while
|
|
# spaces ( ) are converted to underscores (_);
|
|
|
|
sub extlink {
|
|
local ($ref, $fn) = @_;
|
|
|
|
$ref =~ s/\//%/g;
|
|
$ref =~ s/ /_/g;
|
|
|
|
$file = "$ref.html";
|
|
|
|
if (-e $file) {
|
|
if (-l $file) {
|
|
unlink($file);
|
|
symlink($fn, $file);
|
|
}
|
|
else {
|
|
print "Warning: $file exists and is not a symbolic link\n";
|
|
}
|
|
}
|
|
else {
|
|
symlink($fn, $file);
|
|
}
|
|
}
|
|
|
|
# Now, read the command line and take appropriate action
|
|
|
|
sub main {
|
|
# Check arguments
|
|
if (!&NGetOpt('f=s', 'links', 'ssi', 'i:s@')) {
|
|
&usage;
|
|
exit 1;
|
|
}
|
|
if (@ARGV == 0) {
|
|
print "An input file must be specified.\n";
|
|
&usage;
|
|
exit 1;
|
|
}
|
|
if (&getfile($ARGV[0]) == 0) {
|
|
print "Cannot locate specified file: $ARGV[0]\n";
|
|
&usage;
|
|
exit 1;
|
|
}
|
|
|
|
# Generate output
|
|
if ($opt_f eq 'html') {
|
|
print "generating $fileroot.html";
|
|
if ($opt_links == 1) {
|
|
print " with external links";
|
|
}
|
|
print "...\n"; &gen_html();
|
|
}
|
|
elsif ($opt_f eq 'tex' || $opt_f eq 'latex') {
|
|
print "generating $fileroot.tex...\n"; &gen_latex();
|
|
}
|
|
elsif ($opt_f eq 'nroff') {
|
|
print "generating $fileroot.nroff...\n"; &gen_nroff();
|
|
}
|
|
elsif ($opt_f eq 'ascii') {
|
|
print "generating $fileroot.ascii...\n"; &gen_ascii();
|
|
}
|
|
elsif ($opt_f eq 'ps') {
|
|
print "generating $fileroot.ps...\n"; &gen_ps();
|
|
}
|
|
else {
|
|
if ($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;
|
|
|