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- <?php
- /**
- * COPS (Calibre OPDS PHP Server) class file
- *
- * @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
- * @author Sébastien Lucas <sebastien@slucas.fr>
- */
-
- require_once ("base.php");
-
- class OPDSRenderer
- {
- const PAGE_OPENSEARCH = "8";
- const PAGE_OPENSEARCH_QUERY = "9";
-
- private $xmlStream = NULL;
- private $updated = NULL;
-
- private function getUpdatedTime () {
- if (is_null ($this->updated)) {
- $this->updated = time();
- }
- return date (DATE_ATOM, $this->updated);
- }
-
- private function getXmlStream () {
- if (is_null ($this->xmlStream)) {
- $this->xmlStream = new XMLWriter();
- $this->xmlStream->openMemory();
- $this->xmlStream->setIndent (true);
- }
- return $this->xmlStream;
- }
-
- public function getOpenSearch () {
- global $config;
- $xml = new XMLWriter ();
- $xml->openMemory ();
- $xml->setIndent (true);
- $xml->startDocument('1.0','UTF-8');
- $xml->startElement ("OpenSearchDescription");
- $xml->writeAttribute ("xmlns", "http://a9.com/-/spec/opensearch/1.1/");
- $xml->startElement ("ShortName");
- $xml->text ("My catalog");
- $xml->endElement ();
- $xml->startElement ("Description");
- $xml->text ("Search for ebooks");
- $xml->endElement ();
- $xml->startElement ("InputEncoding");
- $xml->text ("UTF-8");
- $xml->endElement ();
- $xml->startElement ("OutputEncoding");
- $xml->text ("UTF-8");
- $xml->endElement ();
- $xml->startElement ("Image");
- $xml->writeAttribute ("type", "image/x-icon");
- $xml->writeAttribute ("width", "16");
- $xml->writeAttribute ("height", "16");
- $xml->text ($config['cops_icon']);
- $xml->endElement ();
- $xml->startElement ("Url");
- $xml->writeAttribute ("type", 'application/atom+xml');
- $urlparam = "?query={searchTerms}";
- if (!is_null (GetUrlParam (DB))) $urlparam = addURLParameter ($urlparam, DB, GetUrlParam (DB));
- $urlparam = str_replace ("%7B", "{", $urlparam);
- $urlparam = str_replace ("%7D", "}", $urlparam);
- $xml->writeAttribute ("template", $config['cops_full_url'] . 'feed.php' . $urlparam);
- $xml->endElement ();
- $xml->startElement ("Query");
- $xml->writeAttribute ("role", "example");
- $xml->writeAttribute ("searchTerms", "robot");
- $xml->endElement ();
- $xml->endElement ();
- $xml->endDocument();
- return $xml->outputMemory(true);
- }
-
- private function startXmlDocument ($page) {
- global $config;
- self::getXmlStream ()->startDocument('1.0','UTF-8');
- self::getXmlStream ()->startElement ("feed");
- self::getXmlStream ()->writeAttribute ("xmlns", "http://www.w3.org/2005/Atom");
- self::getXmlStream ()->writeAttribute ("xmlns:xhtml", "http://www.w3.org/1999/xhtml");
- self::getXmlStream ()->writeAttribute ("xmlns:opds", "http://opds-spec.org/2010/catalog");
- self::getXmlStream ()->writeAttribute ("xmlns:opensearch", "http://a9.com/-/spec/opensearch/1.1/");
- self::getXmlStream ()->writeAttribute ("xmlns:dcterms", "http://purl.org/dc/terms/");
- self::getXmlStream ()->startElement ("title");
- self::getXmlStream ()->text ($page->title);
- self::getXmlStream ()->endElement ();
- if ($page->subtitle != "")
- {
- self::getXmlStream ()->startElement ("subtitle");
- self::getXmlStream ()->text ($page->subtitle);
- self::getXmlStream ()->endElement ();
- }
- self::getXmlStream ()->startElement ("id");
- if ($page->idPage)
- {
- $idPage = $page->idPage;
- if (!is_null (GetUrlParam (DB))) $idPage = GetUrlParam (DB) . ":" . $idPage;
- self::getXmlStream ()->text ($idPage);
- }
- else
- {
- self::getXmlStream ()->text ($_SERVER['REQUEST_URI']);
- }
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("updated");
- self::getXmlStream ()->text (self::getUpdatedTime ());
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("icon");
- self::getXmlStream ()->text ($page->favicon);
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("author");
- self::getXmlStream ()->startElement ("name");
- self::getXmlStream ()->text (utf8_encode ("Sébastien Lucas"));
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("uri");
- self::getXmlStream ()->text ("http://blog.slucas.fr");
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("email");
- self::getXmlStream ()->text ("sebastien@slucas.fr");
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->endElement ();
- $link = new LinkNavigation ("", "start", "Home");
- self::renderLink ($link);
- $link = new LinkNavigation ("?" . $_SERVER['QUERY_STRING'], "self");
- self::renderLink ($link);
- $urlparam = "?page=" . self::PAGE_OPENSEARCH;
- if (!is_null (GetUrlParam (DB))) $urlparam = addURLParameter ($urlparam, DB, GetUrlParam (DB));
- if ($config['cops_generate_invalid_opds_stream'] == 0 || preg_match("/(MantanoReader|FBReader)/", $_SERVER['HTTP_USER_AGENT'])) {
- // Good and compliant way of handling search
- $link = new Link ("feed.php" . $urlparam, "application/opensearchdescription+xml", "search", "Search here");
- }
- else
- {
- // Bad way, will be removed when OPDS client are fixed
- $link = new Link ($config['cops_full_url'] . 'feed.php' . $urlparam, "application/atom+xml", "search", "Search here");
- }
- self::renderLink ($link);
- if ($page->containsBook () && !is_null ($config['cops_books_filter']) && count ($config['cops_books_filter']) > 0) {
- $Urlfilter = getURLParam ("tag", "");
- foreach ($config['cops_books_filter'] as $lib => $filter) {
- $link = new LinkFacet ("?" . addURLParameter ($_SERVER['QUERY_STRING'], "tag", $filter), $lib, localize ("tagword.title"), $filter == $Urlfilter);
- self::renderLink ($link);
- }
- }
- }
-
- private function endXmlDocument () {
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->endDocument ();
- return self::getXmlStream ()->outputMemory(true);
- }
-
- private function renderLink ($link) {
- self::getXmlStream ()->startElement ("link");
- self::getXmlStream ()->writeAttribute ("href", $link->href);
- self::getXmlStream ()->writeAttribute ("type", $link->type);
- if (!is_null ($link->rel)) {
- self::getXmlStream ()->writeAttribute ("rel", $link->rel);
- }
- if (!is_null ($link->title)) {
- self::getXmlStream ()->writeAttribute ("title", $link->title);
- }
- if (!is_null ($link->facetGroup)) {
- self::getXmlStream ()->writeAttribute ("opds:facetGroup", $link->facetGroup);
- }
- if ($link->activeFacet) {
- self::getXmlStream ()->writeAttribute ("opds:activeFacet", "true");
- }
- self::getXmlStream ()->endElement ();
- }
-
-
- private function renderEntry ($entry) {
- self::getXmlStream ()->startElement ("title");
- self::getXmlStream ()->text ($entry->title);
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("updated");
- self::getXmlStream ()->text (self::getUpdatedTime ());
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("id");
- self::getXmlStream ()->text ($entry->id);
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("content");
- self::getXmlStream ()->writeAttribute ("type", $entry->contentType);
- if ($entry->contentType == "text") {
- self::getXmlStream ()->text ($entry->content);
- } else {
- self::getXmlStream ()->writeRaw ($entry->content);
- }
- self::getXmlStream ()->endElement ();
- foreach ($entry->linkArray as $link) {
- self::renderLink ($link);
- }
-
- if (get_class ($entry) != "EntryBook") {
- return;
- }
-
- foreach ($entry->book->getAuthors () as $author) {
- self::getXmlStream ()->startElement ("author");
- self::getXmlStream ()->startElement ("name");
- self::getXmlStream ()->text ($author->name);
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("uri");
- self::getXmlStream ()->text ("feed.php" . $author->getUri ());
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->endElement ();
- }
- foreach ($entry->book->getTags () as $category) {
- self::getXmlStream ()->startElement ("category");
- self::getXmlStream ()->writeAttribute ("term", $category->name);
- self::getXmlStream ()->writeAttribute ("label", $category->name);
- self::getXmlStream ()->endElement ();
- }
- if ($entry->book->getPubDate () != "") {
- self::getXmlStream ()->startElement ("dcterms:issued");
- self::getXmlStream ()->text (date ("Y-m-d", $entry->book->pubdate));
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("published");
- self::getXmlStream ()->text (date ("Y-m-d", $entry->book->pubdate) . "T08:08:08Z");
- self::getXmlStream ()->endElement ();
- }
-
- $lang = $entry->book->getLanguages ();
- if (!empty ($lang)) {
- self::getXmlStream ()->startElement ("dcterms:language");
- self::getXmlStream ()->text ($lang);
- self::getXmlStream ()->endElement ();
- }
-
- }
-
- public function render ($page) {
- global $config;
- self::startXmlDocument ($page);
- if ($page->isPaginated ())
- {
- self::getXmlStream ()->startElement ("opensearch:totalResults");
- self::getXmlStream ()->text ($page->totalNumber);
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("opensearch:itemsPerPage");
- self::getXmlStream ()->text ($config['cops_max_item_per_page']);
- self::getXmlStream ()->endElement ();
- self::getXmlStream ()->startElement ("opensearch:startIndex");
- self::getXmlStream ()->text (($page->n - 1) * $config['cops_max_item_per_page'] + 1);
- self::getXmlStream ()->endElement ();
- $prevLink = $page->getPrevLink ();
- $nextLink = $page->getNextLink ();
- if (!is_null ($prevLink)) {
- self::renderLink ($prevLink);
- }
- if (!is_null ($nextLink)) {
- self::renderLink ($nextLink);
- }
- }
- foreach ($page->entryArray as $entry) {
- self::getXmlStream ()->startElement ("entry");
- self::renderEntry ($entry);
- self::getXmlStream ()->endElement ();
- }
- return self::endXmlDocument ();
- }
- }
-
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