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<?php
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/**
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* @file
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* Generates the EPUB versions of the pages.
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*
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* This file is included by the print_epub module and includes the
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* functions that interface with the EPUB generation packages.
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*
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* @ingroup print
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*/
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module_load_include('inc', 'print', 'print.pages');
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/**
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* Generate a EPUB version of the printer-friendly page.
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*
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* @see print_controller()
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* @see _print_epub_domepub()
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* @see _print_epub_tcepub()
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*/
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function print_epub_controller() {
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// Disable caching for generated EPUBs, as Drupal doesn't ouput the proper
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// headers from the cache.
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$GLOBALS['conf']['cache'] = FALSE;
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$args = func_get_args();
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$path = filter_xss(implode('/', $args));
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$cid = isset($_GET['comment']) ? (int) $_GET['comment'] : NULL;
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// Handle the query.
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$query = $_GET;
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unset($query['q']);
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$node = NULL;
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if (!empty($path)) {
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if ($alias = drupal_lookup_path('source', $path)) {
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// Alias.
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$path_arr = explode('/', $alias);
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$node = node_load($path_arr[1]);
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}
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elseif (ctype_digit($args[0])) {
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// Normal nid.
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$node = node_load($args[0]);
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}
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$epub_filename = variable_get('print_epub_filename', PRINT_EPUB_FILENAME_DEFAULT);
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if (!empty($epub_filename) && !empty($node)) {
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$epub_filename = token_replace($epub_filename, array('node' => $node), array('clear' => TRUE));
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}
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else {
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$epub_filename = token_replace($epub_filename, array('site'), array('clear' => TRUE));
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if (empty($epub_filename)) {
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// If empty, use a fallback solution.
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$epub_filename = str_replace('/', '_', $path);
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}
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}
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}
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else {
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$epub_filename = 'page';
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}
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if (function_exists('transliteration_clean_filename')) {
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$epub_filename = transliteration_clean_filename($epub_filename, language_default('language'));
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}
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drupal_alter('print_epub_filename', $epub_filename, $path);
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$epub = print_epub_generate_path($path, $query, $cid, $epub_filename . '.epub');
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if ($epub == NULL) {
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drupal_goto($path);
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exit;
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}
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$nodepath = (isset($node->nid)) ? 'node/' . $node->nid : drupal_get_normal_path($path);
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db_merge('print_epub_page_counter')
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->key(array('path' => $nodepath))
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->fields(array(
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'totalcount' => 1,
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'timestamp' => REQUEST_TIME,
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))
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->expression('totalcount', 'totalcount + 1')
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->execute();
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drupal_exit();
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}
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/**
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* Gennerate a EPUB for a given Drupal path.
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*
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* @param string $path
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* path of the page to convert to EPUB.
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* @param array $query
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* (Optional) array of key/value pairs as used in the url() function for the
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* query.
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* @param int $cid
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* (Optional) comment ID of the comment to render.
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* @param string $epub_filename
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* (Optional) filename of the generated EPUB.
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* @param string $view_mode
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* (Optional) view mode to be used when rendering the content.
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*
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* @return string|null
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* generated EPUB page, or NULL in case of error
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*
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* @see print_epub_controller()
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*/
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function print_epub_generate_path($path, $query = NULL, $cid = NULL, $epub_filename = NULL, $view_mode = PRINT_VIEW_MODE) {
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$link = print_epub_print_link();
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$node = print_controller($path, $link['format'], $cid, $view_mode);
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if ($node) {
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$html = theme('print', array(
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'node' => $node,
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'query' => $query,
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'expand_css' => TRUE,
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'format' => $link['format'],
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));
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$meta = array(
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'node' => $node,
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'url' => url(drupal_get_path_alias(empty($node->nid) ? $node->path : "node/$node->nid"), array('absolute' => TRUE)),
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);
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if (isset($node->name)) {
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$meta['name'] = $node->name;
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}
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if (isset($node->title)) {
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$meta['title'] = $node->title;
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}
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return print_epub_generate_html($html, $meta, $epub_filename);
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}
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else {
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return NULL;
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}
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}
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