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<?php
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// $Id: gallery_filter.inc,v 1.3.2.12 2007/09/10 18:04:08 profix898 Exp $
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/**
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* gallery.module : gallery_filter.inc
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* Gallery Filter functions
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*/
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/**
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* Function gallery_filter_process().
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* (implementation of the main filter routine)
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*/
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function gallery_filter_process($text) {
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$prefix = trim(variable_get('gallery_filter_prefix', 'G2'));
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preg_match_all("/\[$prefix:(\d+)\s*(.*?)\]/i", $text, $matches, PREG_SET_ORDER);
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// Initialize G2 and set default arguments
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if (count($matches) > 0) {
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if (!_gallery_init(TRUE)) {
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return $text;
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}
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$default['n'] = variable_get('gallery_filter_n_images', 1);
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$default['type'] = implode('|', array_fill(0, $default['n'], variable_get('gallery_filter_default_block_type', 'recentImage')));
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$default['maxsize'] = variable_get('gallery_filter_default_maxsize', GALLERY_FILTER_MAXSIZE_DEFAULT);
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$default['exactsize'] = variable_get('gallery_filter_default_exactsize', GALLERY_FILTER_EXACTSIZE_DEFAULT);
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$default['class'] = variable_get('gallery_filter_default_div_class', 'nowrap');
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$default['album_frame'] = variable_get('gallery_filter_default_album_frame', 'none');
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$default['item_frame'] = variable_get('gallery_filter_default_item_frame', 'none');
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$default['show'] = variable_get('gallery_filter_default_show', array('none'));
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$default['target'] = variable_get('gallery_filter_default_link_target', '');
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$default['link'] = variable_get('gallery_filter_default_link', '');
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}
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else {
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return $text;
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}
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$head_array = array();
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// Loop over all matches
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foreach ($matches as $match) {
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// First argument is numeric => valid G2 filter tag
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if (is_numeric($match[1])) {
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$params = array();
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$params['itemId'] = intval($match[1]);
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$args = array_filter(preg_split('/[\s,]+/', $match[2]));
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// Loop over all (optional) arguments
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foreach ($args as $arg) {
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list($key, $value) = array_filter(explode('=', $arg));
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$key = preg_replace('/\W/', '', $key);
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$params[$key] = _gallery_filter_sanitize($key, $value);
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}
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// Treat 'maxsize' and 'size' as the same
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if (isset($params['size'])) {
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$params['maxsize'] = $params['size'];
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unset($params['size']);
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}
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// Carefully treat the default size method (cannot just merge them as the
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// entered value must take precedence over the default)
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if (isset($params['maxsize'])) {
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unset($default['exactsize']);
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}
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if (isset($params['exactsize'])) {
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unset($default['maxsize']);
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}
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// Merge params with default values
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$params = array_merge($default, $params);
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// Transform 'type' into a valid parameter
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if (is_array($params['type'])) {
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// Ensure 'type' contains 'n' elements (auto-append if necessary)
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$count = count($params['type']);
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if (($num = $params['n'] - $count) > 0) {
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$params['type'] += array_fill($count, $num, end($params['type']));
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}
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}
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else {
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$params['type'] = array_fill(0, $params['n'], $params['type']);
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}
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// 'frame' overrides 'album_frame' and 'item_frame'
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if ($params['frame']) {
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$params['album_frame'] = $params['item_frame'] = $params['frame'];
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}
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// Convert into G2-compatible arguments
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$params['blocks'] = implode('|', $params['type']);
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if (isset($params['maxsize']) && !empty($params['maxsize'])) {
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$params['maxSize'] = $params['maxsize'];
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unset($params['exactSize']);
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}
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if (isset($params['exactsize']) && !empty($params['exactsize'])) {
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$params['exactSize'] = $params['exactsize'];
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unset($params['maxSize']);
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}
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$params['albumFrame'] = $params['album_frame'];
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$params['itemFrame'] = $params['item_frame'];
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$params['linkTarget'] = $params['target'];
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$params['link'] = $params['link'];
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// Fetch the images and format output
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list($ret, $content, $head) = GalleryEmbed::getImageBlock($params);
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if ($ret) {
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gallery_error(t('Unable to get Gallery image block'), $ret);
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continue;
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}
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if ($content) {
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// Replace G2 filter tag with image block html
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$params['class'] = 'giImageBlock'. ($params['class'] ? ' '. $params['class'] : '');
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$content = '<div class ="'. $params['class'] .'">'. $content .'</div>';
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$text = str_replace($match[0], $content, $text);
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}
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if ($head) {
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$head_array[] = trim($head);
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}
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}
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}
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// Add html head items and css
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if (count($head_array)) {
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gallery_set_head(implode("\n", array_unique($head_array)));
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}
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GalleryEmbed::done();
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return $text .'<br class="giImageBlock-clear-both" />';
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}
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/**
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* Function _gallery_filter_sanitize().
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* (sanitize filter parameters)
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*/
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function _gallery_filter_sanitize($key, $value) {
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switch (strtolower($key)) {
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case 'n':
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case 'size':
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case 'maxsize':
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case 'exactsize':
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return intval(preg_replace('/\D/', '', $value));
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case 'class':
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case 'frame':
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case 'album_frame':
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case 'item_frame':
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case 'target':
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case 'link':
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return preg_replace('/\W/', '', $value);
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case 'type':
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case 'show':
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return explode('|', preg_replace('/[^\w\x7c]/', '', $value));
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default :
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return check_plain($value);
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}
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return $value;
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}
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