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<?php // Prismatic - Core Functions
if (!defined('ABSPATH')) exit;
function prismatic_load_library() {
global $prismatic_options_general;
if (isset($prismatic_options_general['library']) && $prismatic_options_general['library'] === 'prism') {
require_once PRISMATIC_DIR .'lib/prism/prism.php';
} elseif (isset($prismatic_options_general['library']) && $prismatic_options_general['library'] === 'highlight') {
require_once PRISMATIC_DIR .'lib/highlight/highlight.php';
} elseif (isset($prismatic_options_general['library']) && $prismatic_options_general['library'] === 'plain') {
require_once PRISMATIC_DIR .'lib/plain/plain.php';
}
}
function prismatic_get_default_options($section) {
$options = '';
if ($section === 'general') {
global $prismatic_options_general;
$options = $prismatic_options_general;
} elseif ($section === 'prism') {
global $prismatic_options_prism;
$options = $prismatic_options_prism;
} elseif ($section === 'highlight') {
global $prismatic_options_highlight;
$options = $prismatic_options_highlight;
} elseif ($section === 'plain') {
global $prismatic_options_plain;
$options = $prismatic_options_plain;
}
return $options;
}
function prismatic_encode($text) {
if (!is_string($text)) return $text;
$output = '';
$split = preg_split("/(<code[^>]*>.*<\/code>)/Us", $text, -1, PREG_SPLIT_DELIM_CAPTURE);
$count = count($split);
for ($i = 0; $i < $count; $i++) {
$content = $split[$i];
if (preg_match("/^<code([^>]*)>(.*)<\/code>/Us", $content, $code)) {
$atts = str_replace(array("'", "\""), "%%", $code[1]);
$content = '[prismatic_encoded'. $atts .']'. base64_encode($code[2]) .'[/prismatic_encoded]';
}
$output .= $content;
}
return $output;
}
function prismatic_decode($text) {
if (!is_string($text)) return $text;
$output = '';
$split = preg_split("/(\[prismatic_encoded.*\].*\[\/prismatic_encoded\])/Us", $text, -1, PREG_SPLIT_DELIM_CAPTURE);
$count = count($split);
for ($i = 0; $i < $count; $i++) {
$content = $split[$i];
if (preg_match("/^\[prismatic_encoded(.*)\](.*)\[\/prismatic_encoded\]/Us", $content, $code)) {
$atts = str_replace("%%", "\"", $code[1]);
$content = base64_decode($code[2]);
$content = preg_replace("/\r/", "", $content);
$content = preg_replace("/^\s*?\n/", "\n", $content);
$content = '<code'. $atts .'>'. esc_html($content) .'</code>';
}
$output .= $content;
}
return $output;
}
function prismatic_check_admin($library, $filter) {
$settings = 'prismatic_options_'. $library;
$setting = 'filter_'. $filter;
$options = prismatic_get_default_options($library);
$option = isset($options[$setting]) ? $options[$setting] : false;
if ($option === 'admin' || $option === 'both') return true;
return false;
}
function prismatic_add_filters() {
global $prismatic_options_general;
$library = (isset($prismatic_options_general['library'])) ? $prismatic_options_general['library'] : 'none';
// POST CONTENT
add_filter('the_content', 'prismatic_encode', 1);
add_filter('the_content', 'prismatic_decode', 3);
if (function_exists('get_fields')) { // ACF
add_filter('acf/load_value', 'prismatic_encode', 1);
add_filter('acf/load_value', 'prismatic_decode', 3);
}
if (prismatic_check_admin($library, 'content')) {
add_filter('content_save_pre', 'prismatic_encode', 33);
add_filter('content_save_pre', 'prismatic_decode', 77);
}
// POST EXCERPTS
add_filter('the_excerpt', 'prismatic_encode', 1);
add_filter('the_excerpt', 'prismatic_decode', 99);
if (prismatic_check_admin($library, 'excerpts')) {
add_filter('excerpt_save_pre', 'prismatic_encode', 33);
add_filter('excerpt_save_pre', 'prismatic_decode', 77);
}
// POST COMMENTS
add_filter('comment_text', 'prismatic_encode', 1);
add_filter('comment_text', 'prismatic_decode', 99);
if (prismatic_check_admin($library, 'comments')) {
add_filter('comment_save_pre', 'prismatic_encode', 33);
add_filter('comment_save_pre', 'prismatic_decode', 77);
}
}
function prismatic_block_styles() {
global $prismatic_options_general;
$disable = isset($prismatic_options_general['disable_block_styles']) ? $prismatic_options_general['disable_block_styles'] : false;
if ($disable) {
wp_deregister_style('prismatic-blocks');
wp_register_style('prismatic-blocks', false);
}
}
function prismatic_code_shortcode($attr, $content = null) {
extract(shortcode_atts(array('class' => '',
), $attr));
$class = $class ? ' class="'. sanitize_html_class($class) .'"' : '';
$encode = prismatic_encode($content);
$decode = prismatic_decode($encode);
return '<code'. $class .'>'. wp_kses_post($decode) .'</code>';
}