private function createNavPoint(\DOMDocument $document, ManifestItem $item, &$index)
{
$child = $document->createElement('navPoint');
$child->setAttribute('id', sprintf('navpoint-%d', $index));
$child->setAttribute('playOrder', $index);
$dom = new \DOMDocument('1.0');
@$dom->loadHTML($item->getContent());
$title = $dom->getElementsByTagName('title')->item(0);
if (!$title) {
$title = basename($item->href, '.html');
} else {
$title = $title->nodeValue;
}
$label = $document->createElement('navLabel');
$text = $document->createElement('text', $title);
$label->appendChild($text);
$child->appendChild($label);
$content = $document->createElement('content');
$content->setAttribute('src', $item->href);
$child->appendChild($content);
$xpath = new \DOMXPath($dom);
$headers = $xpath->query('//h3/a[@id]');
$createNavPoint = function ($id, $class, $title, $src, $playOrder) use($document) {
$child = $document->createElement('navPoint');
$child->setAttribute('id', $id);
$child->setAttribute('class', $class);
$child->setAttribute('playOrder', $playOrder);
$label = $document->createElement('navLabel');
$text = $document->createElement('text', $title);
$label->appendChild($text);
$child->appendChild($label);
$content = $document->createElement('content');
$content->setAttribute('src', $src);
$child->appendChild($content);
return $child;
};
if ($headers) {
foreach ($headers as $node) {
// only add 2nd level headers
if (!preg_match('/^\\d+\\.\\d+$/', $node->nodeValue)) {
continue;
}
$ref = $node->getAttribute('id');
$title = $node->nextSibling->nodeValue;
$child->appendChild($createNavPoint(str_replace('.', '_', $ref), 'h2', $title, sprintf('%s#%s', $item->href, $ref), ++$index));
}
}
return $child;
}
protected function execute(InputInterface $input, OutputInterface $output)
{
$destination = $input->getArgument('output');
// use realpath because we need the absolute location
$filename = realpath(dirname($destination)) . '/' . basename($destination);
$workingDir = sys_get_temp_dir() . uniqid('build-epub-');
mkdir($workingDir);
$converter = new Txt2HtmlConverter(realpath($input->getArgument('input')), $workingDir);
$converter->convert();
$sourceFiles = $converter->getFiles();
$this->workingDir = $workingDir;
$package = new Package();
$metadata = array('title' => 'HTTP Protocol', 'identifier' => 'http-protocol', 'language' => 'en');
foreach ($metadata as $name => $value) {
$item = new MetadataItem();
$item->name = $name;
$item->value = $value;
$package->metadata->add($item);
}
$toc = new ManifestItem();
$toc->type = 'application/x-dtbncx+xml';
$toc->href = 'toc.ncx';
$toc->id = 'ncx';
$toc->setContent(function () use($package) {
$dumper = new TocResourceDumper($package);
return $dumper->dump();
});
$package->manifest->add($toc);
foreach ($sourceFiles as $name => $file) {
$item = new ManifestItem();
$item->href = $name;
// fix the filenames for sorting purposes
if (preg_match('/rfc(\\d+)-sec(\\d+)\\.html/', $item->href, $match)) {
$item->href = sprintf('x-rfc%s-sec%04s.html', $match[1], $match[2]);
}
$item->type = 'application/xhtml+xml';
$item->id = basename($item->href, '.html');
$item->setContent($this->repairSpecHTML(file_get_contents($file)));
unlink($file);
$package->manifest->add($item);
$package->spine->add($item);
}
$this->addFromString('mimetype', 'application/epub+zip');
$this->addFromString('META-INF/container.xml', <<<EOT
<?xml version="1.0"?>
<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">
<rootfiles>
<rootfile full-path="content.opf" media-type="application/oebps-package+xml"/>
</rootfiles>
</container>
EOT
);
$dumper = new OpfResourceDumper($package);
$this->addFromString('content.opf', $dumper->dump());
foreach ($package->manifest->all() as $item) {
$this->addFromString($item->href, $item->getContent());
}
exec(sprintf('(cd %s && zip -q0Xj %s %s)', escapeshellarg($workingDir), escapeshellarg($filename), 'mimetype'));
exec(sprintf('(cd %s && zip -Xur9D %s *)', escapeshellarg($workingDir), escapeshellarg($filename)));
exec(sprintf('rm -rf %s', escapeshellarg($workingDir)));
}