/**
* OB Callback
*
* @param string $buffer
* @return string
*/
function ob_callback($buffer)
{
if ($buffer != '' && w3_is_xml($buffer)) {
$regexps = array();
$upload_info = w3_upload_info();
$site_url_regexp = w3_get_site_url_regexp();
if ($upload_info) {
$regexps[] = '~(["\'])((' . $site_url_regexp . ')?/?(' . w3_preg_quote($upload_info['upload_url']) . '[^"\'>]+))~';
}
if ($this->_config->get_boolean('cdn.includes.enable')) {
$mask = $this->_config->get_string('cdn.includes.files');
if ($mask != '') {
$regexps[] = '~(["\'])((' . $site_url_regexp . ')?/?(' . w3_preg_quote(WPINC) . '/(' . $this->get_regexp_by_mask($mask) . ')))~';
}
}
if ($this->_config->get_boolean('cdn.theme.enable')) {
$theme_dir = preg_replace('~' . $site_url_regexp . '~i', '', get_stylesheet_directory_uri());
$mask = $this->_config->get_string('cdn.theme.files');
if ($mask != '') {
$regexps[] = '~(["\'])((' . $site_url_regexp . ')?/?(' . w3_preg_quote($theme_dir) . '/(' . $this->get_regexp_by_mask($mask) . ')))~';
}
}
if ($this->_config->get_boolean('cdn.minify.enable')) {
$regexps[] = '~(["\'])((' . $site_url_regexp . ')?/?(' . w3_preg_quote(W3TC_CONTENT_MINIFY_DIR_NAME) . '/[a-z0-9-_]+\\.include(-footer)?(-nb)?\\.(css|js)))~';
}
if ($this->_config->get_boolean('cdn.custom.enable')) {
$masks = $this->_config->get_array('cdn.custom.files');
if (count($masks)) {
$mask_regexps = array();
foreach ($masks as $mask) {
if ($mask != '') {
$mask = w3_normalize_file($mask);
$mask_regexps[] = $this->get_regexp_by_mask($mask);
}
}
$regexps[] = '~(["\'])((' . $site_url_regexp . ')?/?(' . implode('|', $mask_regexps) . '))~i';
}
}
foreach ($regexps as $regexp) {
$buffer = preg_replace_callback($regexp, array(&$this, 'link_replace_callback'), $buffer);
}
if ($this->_config->get_boolean('cdn.debug')) {
$buffer .= "\r\n\r\n" . $this->get_debug_info();
}
}
return $buffer;
}
/**
* Translates URL to local path
* @param string $url
* @return string
*/
function w3_translate_file($url)
{
if (!w3_is_url($url)) {
$url = w3_get_domain_url() . '/' . ltrim($url, '/\\');
}
$site_url_regexp = '~' . w3_get_site_url_regexp() . '~i';
if (preg_match($site_url_regexp, $url) && strstr($url, '?') === false) {
$url = preg_replace($site_url_regexp, '', $url);
$url = w3_get_site_path() . ltrim($url, '/\\');
}
$url = ltrim($url, '/');
return $url;
}
/**
* Normalize file path
*
* @param string $file
* @return string
*/
function w3_normalize_file($file)
{
$site_url_regexp = '~' . w3_get_site_url_regexp() . '~i';
$file = preg_replace($site_url_regexp, '', $file);
$file = ltrim($file, '/\\');
return $file;
}
