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<?php
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/**
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* @file
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* Display Suite Format
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*/
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/**
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* Implements hook_filter_info().
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*/
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function ds_format_filter_info() {
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$filters['ds_code'] = array(
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'title' => t('Display Suite evaluator'),
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'description' => t('This filter will only work in the Display Suite text format, machine name is <em>ds_code</em>. No other filters can be enabled either.'),
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'process callback' => 'ds_format_php_eval',
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'tips callback' => 'ds_format_filter_tips',
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'cache' => FALSE,
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);
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return $filters;
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}
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/**
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* Tips callback for Display Suite php filter.
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*/
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function ds_format_filter_tips($filter, $format, $long = FALSE) {
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global $base_url;
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if ($long) {
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$output = '<h4>' . t('Using custom code with Display Suite') . '</h4>';
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$output .= t('Include <?php ?> tags when using PHP. The $entity object is available.');
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return $output;
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}
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else {
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return t('You may post Display Suite code. You should include <?php ?> tags when using PHP. The $entity object is available.');
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}
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}
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/**
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* Wrapper function around PHP eval(). We don't use php_eval from
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* the PHP module because custom fields might need properties from
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* the current entity.
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*
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* @param $code
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* The code to evaluate from the custom field.
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* @param $object
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* An object to use for evaluation.
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* @return $output
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* The output from eval.
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*/
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function ds_format_php_eval($code, $entity, $build = array()) {
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global $theme_path, $theme_info, $conf;
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// Store current theme path.
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$old_theme_path = $theme_path;
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// Restore theme_path to the theme, as long as ds_php_eval() executes,
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// so code evaluted will not see the caller module as the current theme.
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// If theme info is not initialized get the path from theme_default.
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if (!isset($theme_info)) {
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$theme_path = drupal_get_path('theme', $conf['theme_default']);
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}
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else {
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$theme_path = dirname($theme_info->filename);
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}
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ob_start();
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print eval('?>' . $code);
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$output = ob_get_contents();
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ob_end_clean();
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// Recover original theme path.
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$theme_path = $old_theme_path;
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return $output;
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}
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