-#!/usr/bin/perl
-use strict;
-use warnings;
-use CSS::Minifier::XS;
-use File::Copy;
-use File::Find;
-use File::Slurp;
-use File::Spec;
-use JavaScript::Minifier::XS;
-use XML::LibXML;
-use XML::LibXSLT;
-
-my $canonical_url = 'http://www.exim.org/';
-
-## Parse arguments
-my %opt = parse_arguments();
-
-## Generate the pages
-do_doc( 'spec', $_ ) foreach @{ $opt{spec} || [] };
-do_doc( 'filter', $_ ) foreach @{ $opt{filter} || [] };
-do_web() if exists $opt{web};
-
-## Add the exim-html-current symlink
-print "Symlinking exim-html-current to exim-html-$opt{latest}\n";
-symlink( "$opt{docroot}/exim-html-$opt{latest}", "$opt{docroot}/exim-html-current" );
-
-## Generate the website files
-sub do_web {
-
- ## Make sure the template web directory exists
- die "No such directory: $opt{tmpl}/web\n" unless -d "$opt{tmpl}/web";
-
- ## Scan the web templates
- find(
- sub {
- my ($path) = substr( $File::Find::name, length("$opt{tmpl}/web"), length($File::Find::name) ) =~ m#^/*(.*)$#;
-
- if ( -d "$opt{tmpl}/web/$path" ) {
-
- ## Create the directory in the doc root if it doesn't exist
- if ( !-d "$opt{docroot}/$path" ) {
- mkdir("$opt{docroot}/$path") or die "Unable to make $opt{docroot}/$path: $!\n";
- }
-
- }
- else {
-
- ## Build HTML from XSL files and simply copy static files which have changed
- if ( $path =~ /(.+)\.xsl$/ ) {
- print "Generating : docroot:/$1.html\n";
- transform( undef, "$opt{tmpl}/web/$path", "$opt{docroot}/$1.html" );
- }
- elsif ( -f "$opt{tmpl}/web/$path" ) {
-
- ## Skip if the file hasn't changed (mtime based)
- return if -f "$opt{docroot}/$path" && ( stat("$opt{tmpl}/web/$path") )[9] == ( stat("$opt{docroot}/$path") )[9];
-
- if ( $path =~ /(.+)\.css$/ ) {
- print "CSS to : docroot:/$path\n";
- my $content = read_file("$opt{tmpl}/web/$path");
- write_file( "$opt{docroot}/$path", CSS::Minifier::XS::minify($content) );
- }
- elsif ( $path =~ /(.+)\.js$/ ) {
- print "JS to : docroot:/$path\n";
- my $content = read_file("$opt{tmpl}/web/$path");
- write_file( "$opt{docroot}/$path", JavaScript::Minifier::XS::minify($content) );
- }
- else {
- ## Copy
- print "Copying to : docroot:/$path\n";
- copy( "$opt{tmpl}/web/$path", "$opt{docroot}/$path" ) or die "$path: $!";
- }
- ## Set mtime
- utime( time, ( stat("$opt{tmpl}/web/$path") )[9], "$opt{docroot}/$path" );
- }
- }
-
- },
- "$opt{tmpl}/web"
- );
-}
-
-## Generate index/chapter files for a doc
-sub do_doc {
- my ( $type, $xml_path ) = @_;
-
- ## Read and validate the XML file
- my $xml = XML::LibXML->new()->parse_file($xml_path) or die $!;
-
- ## Get the version number
- my $version = $xml->findvalue('/book/bookinfo/revhistory/revision/revnumber');
- die "Unable to get version number\n" unless defined $version && $version =~ /^\d+(\.\d+)*$/;
-
- ## Prepend chapter filenames?
- my $prepend_chapter = $type eq 'filter' ? 'filter_' : '';
-
- ## Add the canonical url for this document
- $xml->documentElement()
- ->appendTextChild( 'canonical_url',
- "${canonical_url}exim-html-current/doc/html/spec_html/" . ( $type eq 'spec' ? 'index' : 'filter' ) . ".html" );
-
- ## Fixup the XML
- xref_fixup( $xml, $prepend_chapter );
-
- ## Generate the front page
- {
- my $path = "exim-html-$version/doc/html/spec_html/" . ( $type eq 'filter' ? $type : 'index' ) . ".html";
- print "Generating : docroot:/$path\n";
- transform( $xml, "$opt{tmpl}/doc/index.xsl", "$opt{docroot}/$path", );
- }
-
- ## Generate a Table of Contents XML file
- {
- my $path = "exim-html-$version/doc/html/spec_html/" . ( $type eq 'filter' ? 'filter_toc' : 'index_toc' ) . ".xml";
- print "Generating : docroot:/$path\n";
- transform( $xml, "$opt{tmpl}/doc/toc.xsl", "$opt{docroot}/$path", );
- }
-
- ## Generate the chapters
- my $counter = 0;
- foreach my $chapter ( map { $_->cloneNode(1) } $xml->findnodes('/book/chapter') ) {
-
- ## Add a <chapter_id>N</chapter_id> node for the stylesheet to use
- $chapter->appendTextChild( 'chapter_id', ++$counter );
-
- ## Add previous/next/canonical urls for nav
- {
- $chapter->appendTextChild( 'prev_url',
- $counter == 1
- ? $type eq 'filter'
- ? 'filter.html'
- : 'index.html'
- : sprintf( '%sch%02d.html', $prepend_chapter, $counter - 1 ) );
- $chapter->appendTextChild( 'next_url', sprintf( '%sch%02d.html', $prepend_chapter, $counter + 1 ) );
- $chapter->appendTextChild( 'canonical_url',
- sprintf( 'http://www.exim.org/exim-html-current/doc/html/spec_html/%sch%02d.html', $prepend_chapter, $counter ) );
- }
-
- ## Create an XML document from the chapter
- my $doc = XML::LibXML::Document->createDocument( '1.0', 'UTF-8' );
- $doc->setDocumentElement($chapter);
-
- ## Transform the chapter into html
- {
- my $path = sprintf( 'exim-html-%s/doc/html/spec_html/%sch%02d.html', $version, $prepend_chapter, $counter );
- print "Generating : docroot:/$path\n";
- transform( $doc, "$opt{tmpl}/doc/chapter.xsl", "$opt{docroot}/$path", );
- }
- }
-}
-
-## Fixup xref tags
-sub xref_fixup {
- my ( $xml, $prepend_chapter ) = @_;
-
- my %index = ();
-
- ## Add the "prepend_chapter" info
- ( $xml->findnodes('/book') )[0]->appendTextChild( 'prepend_chapter', $prepend_chapter );
-
- ## Iterate over each chapter
- my $chapter_counter = 0;
- foreach my $chapter ( $xml->findnodes('/book/chapter') ) {
- ++$chapter_counter;
-
- my $chapter_id = $chapter->getAttribute('id');
- unless ($chapter_id) { # synthesise missing id
- $chapter_id = sprintf( 'chapter_noid_%04d', $chapter_counter );
- $chapter->setAttribute( 'id', $chapter_id );
- }
- my $chapter_title = $chapter->findvalue('title');
-
- $index{$chapter_id} = { chapter_id => $chapter_counter, chapter_title => $chapter_title };
-
- ## Iterate over each section
- my $section_counter = 0;
- foreach my $section ( $chapter->findnodes('section') ) {
- ++$section_counter;
-
- my $section_id = $section->getAttribute('id');
- unless ($section_id) { # synthesise missing id
- $section_id = sprintf( 'section_noid_%04d_%04d', $chapter_counter, $section_counter );
- $section->setAttribute( 'id', $section_id );
- }
- my $section_title = $section->findvalue('title');
-
- $index{$section_id} =
- { chapter_id => $chapter_counter, chapter_title => $chapter_title, section_id => $section_counter };
- }
- }
-
- ## Replace all of the xrefs in the XML
- foreach my $xref ( $xml->findnodes('//xref') ) {
- my $linkend = $xref->getAttribute('linkend');
- if ( exists $index{$linkend} ) {
- $xref->setAttribute( 'chapter_id', $index{$linkend}{'chapter_id'} );
- $xref->setAttribute( 'chapter_title', $index{$linkend}{'chapter_title'} );
- $xref->setAttribute( 'section_id', $index{$linkend}{'section_id'} ) if $index{$linkend}{'section_id'};
- $xref->setAttribute( 'url',
- sprintf( '%sch%02d.html', $prepend_chapter, $index{$linkend}{'chapter_id'} )
- . ( $index{$linkend}{'section_id'} ? '#' . $linkend : '' ) );
- }
- }
-}
-
-## Handle the transformation
-sub transform {
- my ( $xml, $xsl_path, $out_path ) = @_;
-
- ## Build an empty XML structure if an undefined $xml was passed
- unless ( defined $xml ) {
- $xml = XML::LibXML::Document->createDocument( '1.0', 'UTF-8' );
- $xml->setDocumentElement( $xml->createElement('content') );
- }
-
- ## Add the current version of Exim to the XML
- $xml->documentElement()->appendTextChild( 'current_version', $opt{latest} );
-
- ## Parse the ".xsl" file as XML
- my $xsl = XML::LibXML->new()->parse_file($xsl_path) or die $!;
-
- ## Generate a stylesheet from the ".xsl" XML.
- my $stylesheet = XML::LibXSLT->new()->parse_stylesheet($xsl);
-
- ## Generate a doc from the XML transformed with the XSL
- my $doc = $stylesheet->transform($xml);
-
- ## Make the containing directory if it doesn't exist
- mkdirp( ( $out_path =~ /^(.+)\/.+$/ )[0] );
-
- ## Write out the document
- open my $out, '>', $out_path or die $!;
- print $out $stylesheet->output_as_bytes($doc);
- close $out;
-}
-
-## "mkdir -p "
-sub mkdirp {
- my $path = shift;
-
- my @parts = ();
- foreach ( split( /\//, $path ) ) {
- push @parts, $_;
- my $make = join( '/', @parts );
- next unless length($make);
- next if -d $make;
- mkdir($make) or die "Unable to mkdir $make: $!\n";
- }
-}
-
-## Parse arguments
-sub parse_arguments {
- my %opt = ();
-
- ## --help
- help(0) if int(@ARGV) == 0 || grep( /^--help|-h$/, @ARGV );
-
- my @collection = @ARGV;
- while (@collection) {
- my $key = shift @collection;
-
- if ( $key eq '--web' ) {
-
- ## --web
- $opt{web} = 1;
- }
- elsif ( $key =~ /^--(spec|filter)$/ ) {
-
- ## --spec and --filter
- my $continue = 1;
- while ( $continue && @collection ) {
- my $value = shift @collection;
-
- if ( $value =~ /^--/ ) {
- unshift @collection, $value;
- $continue = 0;
- }
- else {
- $value = File::Spec->rel2abs($value);
- help( 1, 'No such file: ' . $value ) unless -f $value;
- push @{ $opt{$1} }, $value unless grep( $_ eq $value, @{ $opt{$1} } );
- }
- }
- help( 1, 'Missing value for ' . $key ) unless exists $opt{$1};
- }
- elsif ( $key eq '--latest' ) {
-
- ## --latest
- my $value = shift @collection;
- help( 1, 'Missing value for ' . $key ) unless defined $value;
- help( 1, 'Invalid value for ' . $key ) unless $value =~ /^\d+(?:\.\d+)*$/;
- $opt{latest} = $value;
- }
- elsif ( $key =~ /^--(tmpl|docroot)$/ ) {
-
- ## --tmpl and --docroot
- my $value = shift @collection;
- help( 1, 'Missing value for ' . $key ) unless defined $value;
- $value = File::Spec->rel2abs($value);
- help( 1, 'No such directory: ' . $value ) unless -d $value;
- $opt{$1} = $value;
- $opt{$1} =~ s#/+$##;
- }
- else {
- help( 1, 'Bad argument: ' . $key );
- }
- }
-
- help( 1, 'Must include at least one of --web, --spec or --filter' )
- unless exists $opt{web} || exists $opt{spec} || exists $opt{filter};
- foreach (qw( latest tmpl docroot )) {
- help( 1, 'Missing argument: --' . $_ ) unless exists $opt{$_};
- }
-
- return %opt;
-}
-
-## Help information
-sub help {
- my ( $exit_code, $msg ) = @_;
-
- print "$msg\n\n" if defined $msg;
-
- print << "END_HELP";
-Options:
- --help or -h : Print this help information and then exit
-
- --web : Generate the general website pages
- --spec PATH : Generate the spec pages. PATH is the path to the spec.xml
- --filter PATH : Generate the filter pages. PATH is the path to the filter.xml
-
- One or more of the above three options are required. --spec and --filter can
- take multiple values to generate different sets of documentation for
- different versions at the same time.
-
- --latest VERSION : Required. Specify the latest stable version of Exim.
- --tmpl PATH : Required. Path to the templates directory
- --docroot PATH : Required. Path to the website document root
-
- If CSS::Minifier::XS is installed, then CSS will be minified.
- If JavaScript::Minifier::XS is installed, then JavaScript will be minified.
-
-Example:
-
- ./gen.pl --latest 4.72
- --web
- --spec spec.xml 4.71/spec.xml
- --filter filter.xml 4.71/filter.xml
- --tmpl ~/www/templates
- --docroot ~/www/docroot
-END_HELP
-
- exit($exit_code);
-}
git://git.exim.org / exim-website.git / blobdiff