public static function extractShortCode(&$content, $beginShortCode, $endShortCode)
{
// Find the opening tag
$begin = TpsMisc::mb_strpos($content, $beginShortCode);
if ($begin === false) {
return null;
}
// Find the closing tag
$end = TpsMisc::mb_strpos($content, $endShortCode, $begin);
if ($end === false) {
return null;
}
// Cache some string lengths
$lenBegin = TpsMisc::mb_strlen($beginShortCode);
$lenEnd = TpsMisc::mb_strlen($endShortCode);
// If the shortcodes are surrounded by header tags, then extract them too. This is a frequent user error due to the way the text editor inserts shortcodes.
$beginHeadingTag = $endHeadingTag = '';
if (preg_match('(<h([1-6])>)', TpsMisc::mb_substr($content, $begin - 4, 4), $beginMatches) && preg_match('(</h([1-6])>)', TpsMisc::mb_substr($content, $end + $lenEnd, 5), $endMatches) && $beginMatches[1] === $endMatches[1]) {
$beginHeadingTag = $beginMatches[0];
$endHeadingTag = $endMatches[0];
}
$shortCode = $beginHeadingTag . trim(TpsMisc::mb_substr($content, $begin + $lenBegin, $end - $begin - $lenBegin)) . $endHeadingTag;
$content = TpsMisc::mb_substr($content, 0, $begin - TpsMisc::mb_strlen($beginHeadingTag)) . TpsMisc::mb_substr($content, $end + $lenEnd + TpsMisc::mb_strlen($endHeadingTag));
return $shortCode;
}
public static function the_content($content)
{
if (self::$forceDisable) {
return $content;
}
global $post, $page, $pages, $multipage;
if (!isset($post) || !property_exists($post, 'theiaPostSlider')) {
return $content;
}
// Prevent this function from calling itself.
if (self::$theContentIsCalled) {
return $content;
}
self::$theContentIsCalled = true;
$currentPage = min(max($page, 1), count($pages));
// Get all slides except the current one, which will be echoed as actual HTML.
$slides = array();
for ($i = 1; $i <= count($pages); $i++) {
$page = $i;
$slide = array();
$slide['title'] = self::getPageTitle();
$slide['permalink'] = self::getPostPageUrl($i);
if ($i != $currentPage) {
// Get the content.
$slideContent = get_the_content();
// Save the shortcode title, if present.
$slide['shortCodeTitle'] = TpsShortCodes::extractShortCode($slideContent, TpsMisc::$beginTitleShortCode, TpsMisc::$endTitleShortCode);
// Apply filters.
$slideContent = self::$beginComment . $slideContent . self::$endComment;
$slideContent = apply_filters('the_content', $slideContent);
$slideContent = str_replace(']]>', ']]>', $slideContent);
/*
* Leave only the actual text. Aditional headers or footers will be discarded. Plugins like "video quicktags"
* will be left intact, while plugins like "related posts thumbnails" and "better author bio" will be discarded.
*/
$begin = TpsMisc::mb_strpos($slideContent, self::$beginComment);
$end = TpsMisc::mb_strpos($slideContent, self::$endComment);
if ($begin !== false && $end !== false) {
// Preserve beginning <p> tag.
if (TpsMisc::mb_substr($slideContent, $begin - 3, 3) == '<p>') {
if (TpsMisc::mb_substr($slideContent, $begin + TpsMisc::mb_strlen(self::$beginComment), 4) == '</p>') {
$begin += TpsMisc::mb_strlen(self::$beginComment) + 4;
} else {
$begin -= 3;
}
} else {
$begin += TpsMisc::mb_strlen(self::$beginComment);
}
// Preserve ending <p> tag.
if (TpsMisc::mb_substr($slideContent, $end + TpsMisc::mb_strlen(self::$endComment), 4) == '</p>') {
if (TpsMisc::mb_substr($slideContent, $end - 3, 3) == '<p>') {
$end -= 3;
} else {
$end += TpsMisc::mb_strlen(self::$endComment) + 4;
}
}
// Cut!
$slideContent = TpsMisc::mb_substr($slideContent, $begin, $end - $begin);
}
// Trim left and right whitespaces.
$slideContent = trim($slideContent);
/*
* Bug fix for WordPress. Sometimes it adds an invalid "</p>" closing tag at the beginning and/or an
* opening "<p>" tag at the end.
*/
if (TpsMisc::mb_substr($slideContent, 0, 4) == '</p>') {
$slideContent = TpsMisc::mb_substr($slideContent, 4);
}
if (TpsMisc::mb_substr($slideContent, -3) == '<p>') {
$slideContent = TpsMisc::mb_substr($slideContent, 0, -3);
}
$slide['content'] = $slideContent;
}
$slides[$i - 1] = $slide;
}
$page = $currentPage;
// Append the slider initialization script to the "theiaPostSlider.js" script.
if (TpsOptions::get('refresh_page_on_slide') == false && in_array($post->ID, self::$postsWithSlider) == false) {
$nav = array();
if (in_array(TpsOptions::get('nav_vertical_position'), array('top_and_bottom', 'top'))) {
$nav[] = '#' . $post->theiaPostSlider['navIdUpper'];
}
if (in_array(TpsOptions::get('nav_vertical_position'), array('top_and_bottom', 'bottom'))) {
$nav[] = '#' . $post->theiaPostSlider['navIdLower'];
}
$sliderOptions = array('src' => '#' . $post->theiaPostSlider['srcId'] . ' > div', 'dest' => '#' . $post->theiaPostSlider['destId'], 'nav' => $nav, 'navText' => TpsOptions::get('navigation_text'), 'helperText' => TpsOptions::get('helper_text'), 'defaultSlide' => $currentPage - 1, 'transitionEffect' => TpsOptions::get('transition_effect'), 'transitionSpeed' => TpsOptions::get('transition_speed'), 'keyboardShortcuts' => self::isCompatiblePost() ? 'true' : 'false', 'slides' => $slides, 'prevPost' => $post->theiaPostSlider['prevPostUrl'], 'nextPost' => $post->theiaPostSlider['nextPostUrl'], 'prevText' => TpsOptions::get('prev_text'), 'nextText' => TpsOptions::get('next_text'), 'buttonWidth' => TpsOptions::get('button_width'), 'prevText_post' => TpsOptions::get('prev_text_post'), 'nextText_post' => TpsOptions::get('next_text_post'), 'buttonWidth_post' => TpsOptions::get('button_width_post'), 'postUrl' => get_permalink($post->ID));
$script = "\r\n jQuery(document).ready(function() {\r\n var p = new tps.createSlideshow(" . json_encode($sliderOptions) . ");\r\n });\r\n ";
global $wp_scripts;
$data = $wp_scripts->get_data('theiaPostSlider.js', 'data');
if ($data) {
$script = "{$data}\n{$script}";
}
$wp_scripts->add_data('theiaPostSlider.js', 'data', $script);
self::$postsWithSlider[] = $post->ID;
}
// Return the unchanged content.
self::$theContentIsCalled = false;
return $content;
}