/**
* {@inheritdoc}
*/
public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state)
{
$enabled_languages = GeshiFilter::getEnabledLanguages();
$element['sourcecode'] = array('#title' => t('Code'), '#type' => 'textarea', '#default_value' => isset($items[$delta]->sourcecode) ? $items[$delta]->sourcecode : NULL);
$element['language'] = array('#title' => t('Language'), '#type' => 'select', '#default_value' => isset($items[$delta]->language) ? $items[$delta]->language : NULL, '#options' => $enabled_languages);
return $element;
}
/**
* Function for generating the external stylesheet.
*
* @param bool $force
* Force the regeneration of the CSS file.
*/
public static function generateLanguagesCssFile($force = FALSE)
{
$languages = GeshiFilter::getEnabledLanguages();
// Serialize the array of enabled languages as sort of hash.
$languages_hash = serialize($languages);
// Check if generation of the CSS file is needed.
if ($force || $languages_hash != \Drupal::state()->get('geshifilter_cssfile_languages')) {
// Build stylesheet.
$stylesheet = self::generateLanguagesCssRules();
// Save stylesheet.
$stylesheet_filename = self::languageCssPath();
$ret = file_save_data($stylesheet, $stylesheet_filename, FILE_EXISTS_REPLACE);
if ($ret) {
drupal_set_message(t('(Re)generated external CSS style sheet %file.', array('%file' => $ret->getFilename())));
} else {
drupal_set_message(t('Could not generate external CSS file. Check the settings of your <a href="!filesystem">file system</a>.', array('!filesystem' => Url::fromRoute('system.file_system_settings')->toString())), 'error');
}
// Remember for which list of languages the CSS file was generated.
\Drupal::state()->set('cssfile_languages', $languages_hash);
}
}
/**
* Helper function for generating a GeSHi object.
*
* @param string $source_code
* The source code to process.
* @param string $language
* The language to generate a GeSHi object for.
*
* @return \GeSHi
* Return a Geshi class object.
*/
public static function geshiFactory($source_code, $language)
{
$available_languages = GeshiFilter::getAvailableLanguages();
$geshi = new \GeSHi($source_code, $language);
$geshi->set_language_path($available_languages[$language]['language_path']);
return $geshi;
}
/**
* Function for generating a form table for per language settings.
*
* @param string $view
* - enabled Only show the enabled languages.
* - disabled Only show the disabled languages.
* - all Show all languages.
* @param bool $add_checkbox
* When add(TRUE) or not(FALSE) a checkbox to enable languages.
* @param bool $add_tag_option
* When add(TRUE) or not(FALSE) a textbox to set tags.
*
* @return array
* Return elements to a table with languages.
*/
protected function perLanguageSettings($view, $add_checkbox, $add_tag_option)
{
$config = $this->config('geshifilter.settings');
$form = array();
$header = array(t('Language'), t('GeSHi language code'));
if ($add_tag_option) {
$header[] = t('Tag/language attribute value');
}
$form['language'] = array('#type' => 'table', '#header' => $header, '#empty' => t('Nome language is available.'));
// Table body.
$languages = GeshiFilter::getAvailableLanguages();
foreach ($languages as $language => $language_data) {
$enabled = $config->get("language.{$language}.enabled", FALSE);
// Skip items to hide.
if ($view == 'enabled' && !$enabled || $view == 'disabled' && $enabled) {
continue;
}
// Build language row.
$form['language'][$language] = array();
// Add enable/disable checkbox.
if ($add_checkbox) {
$form['language'][$language]['enabled'] = array('#type' => 'checkbox', '#default_value' => $enabled, '#title' => $language_data['fullname']);
} else {
$form['language'][$language]['fullname'] = array('#type' => 'markup', '#markup' => $language_data['fullname']);
}
// Language code.
$form['language'][$language]['name'] = array('#type' => 'markup', '#markup' => $language);
// Add a textfield for tags.
if ($add_tag_option) {
$form['language'][$language]['tags'] = array('#type' => 'textfield', '#default_value' => $config->get("language.{$language}.tags", ''), '#size' => 20);
}
}
return $form;
}
/**
* Callback_geshifilter_prepare for preparing input text.
*
* Replaces the code tags brackets with geshifilter specific ones to prevent
* possible messing up by other filters, e.g.
* '[python]foo[/python]' to '[geshifilter-python]foo[/geshifilter-python]'.
* Replaces newlines with " " to prevent issues with the line break filter
* Escapes the tricky characters like angle brackets with
* SafeMarkup::checkPlain() to prevent messing up by other filters like the
* HTML filter.
*
* @param array $match
* An array with the pieces from matched string.
* - 0: complete matched string.
* - 1: opening bracket ('<' or '[').
* - 2: tag.
* - 3: and.
* - 4: attributes.
* - 5: closing bracket.
* - 6: source code.
* - 7: closing tag.
*
* @return string
* Return escaped code block.
*/
public function prepareCallback(array $match)
{
$tag_name = $match[2];
$tag_attributes = $match[3];
$content = $match[6];
// Get the default highlighting mode.
$lang = $this->config->get('default_highlighting');
if ($lang == GeshiFilter::DEFAULT_DONOTHING) {
// If the default highlighting mode is GeshiFilter::DEFAULT_DONOTHING
// and there is no language set (with language tag or language attribute),
// we should not do any escaping in this prepare phase,
// so that other filters can do their thing.
$enabled_languages = GeshiFilter::getEnabledLanguages();
// Usage of language tag?
list($generic_code_tags, $language_tags, $tag_to_lang) = $this->getTags();
if (isset($tag_to_lang[$tag_name]) && isset($enabled_languages[$tag_to_lang[$tag_name]])) {
$lang = $tag_to_lang[$tag_name];
} else {
// Get additional settings from the tag attributes.
$settings = $this->parseAttributes($tag_attributes);
if ($settings['language'] && isset($enabled_languages[$settings['language']])) {
$lang = $settings['language'];
}
}
// If no language was set: prevent escaping and return original string.
if ($lang == GeshiFilter::DEFAULT_DONOTHING) {
return $match[0];
}
}
if ($this->decodeEntities()) {
$content = $this->unencode($content);
}
// Return escaped code block.
return '[geshifilter-' . $tag_name . $tag_attributes . ']' . str_replace(array("\r", "\n"), array('', ' '), SafeMarkup::checkPlain($content)) . '[/geshifilter-' . $tag_name . ']';
}
