' . t('Provide a stopwords file or enter the words in this form. If you do both, both will be used. Read about !stopwords.', array('!stopwords' => l(t('stop words'), "http://en.wikipedia.org/wiki/Stop_words"))) . '
', ), 'file' => array( '#type' => 'textfield', '#title' => t('Stopwords file'), '#description' => t('This must be a stream-type description likepublic://stopwords/stopwords.txt or http://example.com/stopwords.txt or private://stopwords.txt.'),
),
'stopwords' => array(
'#type' => 'textarea',
'#title' => t('Stopwords'),
'#description' => t('Enter a space and/or linebreak separated list of stopwords that will be removed from content before it is indexed and from search terms before searching.'),
'#default_value' => t("but\ndid\nthe this that those\netc"),
),
);
if (!empty($this->options)) {
$form['file']['#default_value'] = $this->options['file'];
$form['stopwords']['#default_value'] = $this->options['stopwords'];
}
return $form;
}
public function configurationFormValidate(array $form, array &$values, array &$form_state) {
parent::configurationFormValidate($form, $values, $form_state);
$uri = $values['file'];
if (!empty($uri) && !@file_get_contents($uri)) {
$el = $form['file'];
form_error($el, t('Stopwords file') . ': ' . t('The file %uri is not readable or does not exist.', array('%uri' => $uri)));
}
}
public function process(&$value) {
$stopwords = $this->getStopWords();
if (empty($stopwords) || !is_string($value)) {
return;
}
$words = preg_split('/\s+/', $value);
foreach ($words as $sub_key => $sub_value) {
if (isset($stopwords[$sub_value])) {
unset($words[$sub_key]);
$this->ignored[] = $sub_value;
}
}
$value = implode(' ', $words);
}
public function preprocessSearchQuery(SearchApiQuery $query) {
$this->ignored = array();
parent::preprocessSearchQuery($query);
}
public function postprocessSearchResults(array &$response, SearchApiQuery $query) {
if ($this->ignored) {
if (isset($response['ignored'])) {
$response['ignored'] = array_merge($response['ignored'], $this->ignored);
}
else {
$response['ignored'] = $this->ignored;
}
}
}
/**
* @return
* An array whose keys are the stopwords set in either the file or the text
* field.
*/
protected function getStopWords() {
if (isset($this->stopwords)) {
return $this->stopwords;
}
$file_words = $form_words = array();
if (!empty($this->options['file']) && $stopwords_file = file_get_contents($this->options['file'])) {
$file_words = preg_split('/\s+/', $stopwords_file);
}
if (!empty($this->options['stopwords'])) {
$form_words = preg_split('/\s+/', $this->options['stopwords']);
}
$this->stopwords = array_flip(array_merge($file_words, $form_words));
return $this->stopwords;
}
}