/**
* It decorates each table with a template and, if the edition configures it,
* with the appropriate auto-numbered label.
*
* @param ParseEvent $event The object that contains the item being processed
*/
public function decorateAndLabelTables(ParseEvent $event)
{
$item = $event->getItem();
$addTableLabels = in_array('table', $event->app->edition('labels') ?: array());
$parentItemNumber = $item['config']['number'];
$listOfTables = array();
$counter = 0;
$item['content'] = preg_replace_callback("/(?<content><table.*\n<\\/table>)/Ums", function ($matches) use($event, $addTableLabels, $parentItemNumber, &$listOfTables, &$counter) {
// prepare table parameters for template and label
$counter++;
$parameters = array('item' => array('caption' => '', 'content' => $matches['content'], 'label' => '', 'number' => $counter, 'slug' => $event->app->slugify('Table ' . $parentItemNumber . '-' . $counter)), 'element' => array('number' => $parentItemNumber));
// the publishing edition wants to label tables
if ($addTableLabels) {
$label = $event->app->getLabel('table', $parameters);
$parameters['item']['label'] = $label;
}
// add table details to the list-of-tables
$listOfTables[] = $parameters;
return $event->app->render('table.twig', $parameters);
}, $item['content']);
if (count($listOfTables) > 0) {
$event->app->append('publishing.list.tables', $listOfTables);
}
$event->setItem($item);
}
public function onItemPostParse(ParseEvent $event)
{
// fix image URLs
$item = $event->getItem();
$item['content'] = preg_replace_callback('/<img src="(.*)"(.*) \\/>/U', function ($matches) {
$uri = $matches[1];
if ('images/' != substr($uri, 0, 7)) {
$uri = 'images/' . $uri;
}
return sprintf('<img src="%s"%s />', $uri, $matches[2]);
}, $item['content']);
$event->setItem($item);
// decorate each image with a template (and add labels if needed)
$item = $event->getItem();
$listOfImages = array();
$elementNumber = $item['config']['number'];
$counter = 0;
$item['content'] = preg_replace_callback('/(?<content><img .*alt="(?<title>.*)".*\\/>)/U', function ($matches) use($event, $elementNumber, &$listOfImages, &$counter) {
// prepare item parameters for template and label
$counter++;
$parameters = array('item' => array('caption' => $matches['title'], 'content' => $matches['content'], 'label' => '', 'number' => $counter, 'slug' => $event->app->get('slugger')->slugify('Figure ' . $elementNumber . '-' . $counter)), 'element' => array('number' => $elementNumber));
// the publishing edition wants to label figures/images
if (in_array('figure', $event->app->edition('labels'))) {
$label = $event->app->getLabel('figure', $parameters);
$parameters['item']['label'] = $label;
}
// add image datails to list-of-images
$listOfImages[] = $parameters;
return $event->app->render('figure.twig', $parameters);
}, $item['content']);
$event->app->append('publishing.list.images', $listOfImages);
$event->setItem($item);
}
/**
* It decorates each image with a template and, if the edition configures it,
* with the appropriate auto-numbered label.
*
* @param ParseEvent $event The object that contains the item being processed
*/
public function decorateAndLabelImages(ParseEvent $event)
{
$item = $event->getItem();
$addImageLabels = in_array('figure', $event->app->edition('labels') ?: array());
$parentItemNumber = $item['config']['number'];
$listOfImages = array();
$counter = 0;
$item['content'] = preg_replace_callback('/(<p>)?(<div class="(?<align>.*)">)?(?<content><img .*alt="(?<title>[^"]*)".*\\/>)(<\\/div>)?(<\\/p>)?/', function ($matches) use($event, $addImageLabels, $parentItemNumber, &$listOfImages, &$counter) {
// prepare figure parameters for the template and the label
$parameters = array('item' => array('align' => $matches['align'], 'caption' => $matches['title'], 'content' => $matches['content'], 'label' => '', 'number' => null, 'slug' => ''), 'element' => array('number' => $parentItemNumber));
// '*' in title means this is a decorative image instead of
// a book figure or illustration
if ('*' != $matches['title']) {
$counter++;
$parameters['item']['number'] = $counter;
$parameters['item']['slug'] = $event->app->slugify('Figure ' . $parentItemNumber . '-' . $counter);
// the publishing edition wants to label figures/images
if ($addImageLabels) {
$label = $event->app->getLabel('figure', $parameters);
$parameters['item']['label'] = $label;
}
// add image details to the list-of-images
$listOfImages[] = $parameters;
}
return $event->app->render('figure.twig', $parameters);
}, $item['content']);
if (count($listOfImages) > 0) {
$event->app->append('publishing.list.images', $listOfImages);
}
$event->setItem($item);
}
public function onItemPostParse(ParseEvent $event)
{
$item = $event->getItem();
// unescape yaml-style comments that before parsing could
// be interpreted as Markdown first-level headings
$item['content'] = str_replace('#', '#', $item['content']);
$event->setItem($item);
}
public function onItemPostParse(ParseEvent $event)
{
$format = $event->app->edition('format');
if (!in_array($format, array('html_chunked', 'epub', 'epub2'))) {
return;
}
$item = $event->getItem();
$links = $event->app->get('publishing.links');
foreach ($item['toc'] as $entry) {
$itemSlug = $event->app->get('slugger')->slugify(trim($item['label']), array('unique' => false));
$relativeUrl = '#' . $entry['slug'];
$absoluteUrl = $itemSlug . '.html' . $relativeUrl;
$links[$relativeUrl] = $absoluteUrl;
}
$event->app->set('publishing.links', $links);
}
/**
* @dataProvider getCodeBlockConfiguration
*
* @param string $inputFilePath The contents to be parsed
* @param string $expectedFilePath The expected result of parsing the contents
* @param string $codeBlockType The type of code block used in the content
* @param boolean $enableCodeHightlight Whether or not code listings should be highlighted
*/
public function testCodeBlocksTypes($inputFilePath, $expectedFilePath, $codeBlockType, $enableCodeHightlight)
{
$fixturesDir = __DIR__ . '/fixtures/code/';
$app = $this->getApp($codeBlockType, $enableCodeHightlight);
$plugin = new CodePlugin();
$event = new ParseEvent($app);
$event->setItem(array('config' => array('format' => 'md'), 'original' => file_get_contents($fixturesDir . '/' . $inputFilePath), 'content' => ''));
// execute pre-parse method of the plugin
$plugin->parseCodeBlocks($event);
$item = $event->getItem();
// parse the item original content
$item['content'] = $app['parser']->transform($item['original']);
// execute post-parse method of the plugin
$event->setItem($item);
$plugin->fixParsedCodeBlocks($event);
$item = $event->getItem();
$this->assertEquals(file_get_contents($fixturesDir . '/' . $expectedFilePath), $item['content']);
}
/**
* It adds the appropriate auto-numbered labels to the book item sections.
*
* @param ParseEvent $event The object that contains the item being processed
*/
public function addSectionLabels(ParseEvent $event)
{
$item = $event->getItem();
// special book items without a TOC don't need labels
if (0 == count($item['toc'])) {
return;
}
$counters = array(1 => $item['config']['number'], 2 => 0, 3 => 0, 4 => 0, 5 => 0, 6 => 0);
$addSectionLabels = in_array($item['config']['element'], $event->app->edition('labels') ?: array());
foreach ($item['toc'] as $key => $entry) {
if ($addSectionLabels) {
$level = $entry['level'];
if ($level > 1) {
$counters[$level]++;
}
// reset the counters for the higher heading levels
for ($i = $level + 1; $i <= 6; $i++) {
$counters[$i] = 0;
}
$parameters = array_merge($item['config'], array('counters' => $counters, 'level' => $level));
$label = $event->app->getLabel($item['config']['element'], array('item' => $parameters));
} else {
$label = '';
}
$entry['label'] = $label;
$item['toc'][$key] = $entry;
}
// the label of the item matches the label of its first TOC element
$item['label'] = $item['toc'][0]['label'];
// add section labels to the content
foreach ($item['toc'] as $i => $entry) {
// the parsed title can be different from the TOC entry title
// that's the case for the titles with markup code inside (* ` ** etc.)
// thus, the replacement must be done based on a fuzzy title that
// doesn't include the title text
$fuzzyTitle = "/<h" . $entry['level'] . " id=\"" . $entry['slug'] . "\">.*<\\/h" . $entry['level'] . ">\n\n/";
$labeledTitle = sprintf("<h%s id=\"%s\">%s%s</h%s>\n\n", $entry['level'], $entry['slug'], $entry['label'], '' != $entry['label'] ? ' ' . $entry['title'] : $entry['title'], $entry['level']);
$item['content'] = preg_replace($fuzzyTitle, $labeledTitle, $item['content']);
}
$event->setItem($item);
}
/**
* @dataProvider getTestTablePluginData
*/
public function testTablePlugin($inputFilePath, $expectedFilePath, $itemNumber, $addLabels, $expectedLabels)
{
$fixturesDir = __DIR__ . '/fixtures/tables/';
$app = new Application();
$app['publishing.book.slug'] = 'test_book';
$app['publishing.edition'] = 'test_edition';
$app['publishing.book.config'] = array('book' => array('slug' => 'test_book', 'language' => 'en', 'editions' => array('test_edition' => array('format' => 'html', 'labels' => $addLabels ? array('table') : array(), 'theme' => 'clean'))));
$event = new ParseEvent($app);
$plugin = new TablePlugin();
$event->setItem(array('config' => array('number' => $itemNumber), 'content' => file_get_contents($fixturesDir . '/' . $inputFilePath)));
$plugin->decorateAndLabelTables($event);
$item = $event->getItem();
$this->assertEquals(file_get_contents($fixturesDir . '/' . $expectedFilePath), $item['content']);
if (count($app['publishing.list.tables']) > 0) {
foreach ($app['publishing.list.tables'] as $i => $table) {
$this->assertRegexp('/<table.*<\\/table>/s', $table[$i]['item']['content']);
if ($addLabels) {
$this->assertEquals($expectedLabels[$i], $table[$i]['item']['label']);
}
}
}
}
public function onItemPostParse(ParseEvent $event)
{
// decorate each table with a template (and add labels if needed)
$item = $event->getItem();
$listOfTables = array();
$elementNumber = $item['config']['number'];
$counter = 0;
$item['content'] = preg_replace_callback('/(?<content><table.*\\n<\\/table>)/Ums', function ($matches) use($event, $elementNumber, &$listOfTables, &$counter) {
// prepare item parameters for template and label
$counter++;
$parameters = array('item' => array('caption' => '', 'content' => $matches['content'], 'label' => '', 'number' => $counter, 'slug' => $event->app->get('slugger')->slugify('Table ' . $elementNumber . '-' . $counter)), 'element' => array('number' => $elementNumber));
// the publishing edition wants to label tables
if (in_array('table', $event->app->edition('labels'))) {
$label = $event->app->getLabel('table', $parameters);
$parameters['item']['label'] = $label;
}
// add table datails to list-of-images
$listOfTables[] = $parameters;
return $event->app->render('table.twig', $parameters);
}, $item['content']);
$event->app->append('publishing.list.tables', $listOfTables);
$event->setItem($item);
}
/**
* It parses the code blocks of the item content that use the
* fenced style for code blocks:
* * the code listing starts with at least three ~~~
* * (optionally) followed by a whitespace + a dot + the programming language name
* * the lines of code don't include any leading tab or whitespace
* * the code listing ends with the same number of opening ~~~
*
* Examples:
*
* ~~~ .php
* $lorem = 'ipsum';
* // ...
* ~~~
*
* ~~~~~~~~~~ .javascript
* var lorem = 'ipsum';
* // ...
* ~~~~~~~~~~
*
* ~~~
* Generic code not associated with any language
* ~~~
*
* @param ParseEvent $event The event object that provides access to the $app and
* the $item being parsed
*/
private function parseFencedTypeCodeBlocks(ParseEvent $event)
{
// variable needed for PHP 5.3
$self = $this;
$item = $event->getItem();
// regexp adapted from PHP-Markdown
$item['original'] = preg_replace_callback('{
(?:\\n|\\A)
# 1: Opening marker
(
~{3,} # Marker: three tilde or more.
)
[ ]*
(?:
\\.?([-_:a-zA-Z0-9]+) # 2: standalone class name
)?
[ ]* \\n # Whitespace and newline following marker.
# 4: Content
(
(?>
(?!\\1 [ ]* \\n) # Not a closing marker.
.*\\n+
)+
)
# Closing marker.
\\1 [ ]* \\n
}Uxm', function ($matches) use($self, $event) {
$language = $matches[2];
// codeblocks always end with an empty new line (due to the regexp used)
// the current solution rtrims() the whole block. This would not work
// in the (very) rare situations where a code block must end with
// whitespaces, tabs or new lines
$code = rtrim($matches[3]);
if ('' == $language) {
$language = 'code';
}
$code = $self->highlightAndDecorateCode($code, $language, $event->app);
return "\n\n" . $code;
}, $item['original']);
$event->setItem($item);
}
public function onItemPostParse(ParseEvent $event)
{
$html = str_replace('<em>eAsYbOoK</em>', '<strong class="branding">easybook</strong>', $event->getItemProperty('content'));
$event->setItemProperty('content', $html);
}
public function onItemPostParse(ParseEvent $event)
{
// replace <br> by <br/> (it causes problems for epub books)
$item = $event->getItem();
$item['content'] = str_replace('<br>', '<br/>', $item['content']);
$event->setItem($item);
// strip title from the parsed content
$item = $event->getItem();
if (count($item['toc']) > 0) {
$heading = $item['toc'][0];
// only <h1> headings can be the title of the content
if (1 == $heading['level']) {
// the <h1> heading must be the first line to consider it a title
$item['content'] = preg_replace('{
^<h1.*<\\/h1>\\n+(.*)
}x', '$1', $item['content']);
$item['slug'] = $heading['slug'];
$item['title'] = $heading['title'];
}
}
$event->setItem($item);
// add labels
$item = $event->getItem();
if (count($item['toc']) > 0) {
// prepare labels
$counters = array(1 => $item['config']['number'], 2 => 0, 3 => 0, 4 => 0, 5 => 0, 6 => 0);
foreach ($item['toc'] as $key => $entry) {
// edition config allows labels for this element type ('labels' option)
if (in_array($item['config']['element'], $event->app->edition('labels'))) {
$level = $entry['level'];
if ($level > 1) {
$counters[$level]++;
}
// Reset the counters for the higher heading levels
for ($i = $level + 1; $i <= 6; $i++) {
$counters[$i] = 0;
}
$parameters = array_merge($item['config'], array('counters' => $counters, 'level' => $level));
$label = $event->app->getLabel($item['config']['element'], array('item' => $parameters));
} else {
$label = "";
}
$entry['label'] = $label;
$item['toc'][$key] = $entry;
}
// the label of the item matches the label of the first toc element
$item['label'] = $item['toc'][0]['label'];
$event->setItem($item);
// add labels to content
$item = $event->getItem();
foreach ($item['toc'] as $i => $entry) {
// the parsed title can be different from the toc entry title
// that's the case for the titles with markup code inside (* ` ** etc.)
// thus, the replacement must be done based on a fuzzy title that
// doesn't include the title text
$fuzzyTitle = "/<h" . $entry['level'] . " id=\"" . $entry['slug'] . "\">.*<\\/h" . $entry['level'] . ">\n\n/";
$labeledTitle = sprintf("<h%s id=\"%s\">%s %s</h%s>\n\n", $entry['level'], $entry['slug'], $entry['label'], $entry['title'], $entry['level']);
$item['content'] = preg_replace($fuzzyTitle, $labeledTitle, $item['content']);
}
$event->setItem($item);
}
// ensure that the item has a title (using the default title if necessary)
$item = $event->getItem();
if ('' == $item['title']) {
$item['title'] = $event->app->getTitle($item['config']['element']);
$item['slug'] = $event->app->get('slugger')->slugify($item['title']);
$event->setItem($item);
}
}
/**
* It marks the internal links of the book used for cross-references. This
* allows to display the internal links differently than the regular links.
*
* @param ParseEvent $event The object that contains the item being processed
*/
public function markInternalLinks(ParseEvent $event)
{
// Internal links are only marked for the PDF editions
if ('pdf' != $event->app->edition('format')) {
return;
}
$item = $event->getItem();
$item['content'] = preg_replace_callback('/<a (href="#.*".*)<\\/a>/Us', function ($matches) {
return sprintf('<a class="internal" %s</a>', $matches[1]);
}, $item['content']);
$event->setItem($item);
}
