AlkantarClanX12
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<?php
namespace W3TC;
class Util_Content {
/**
* Check if content is HTML
*
* @param string $content
* @return boolean
*/
static public function is_html( $content ) {
$content = Util_Content::_is_html_prepare( $content );
return stripos( $content, '<html' ) === 0 ||
stripos( $content, '<!DOCTYPE' ) === 0;
}
/**
* Check if content is HTML or XML
*
* @param string $content
* @return boolean
*/
static public function is_html_xml( $content ) {
$content = Util_Content::_is_html_prepare( $content );
return stripos( $content, '<?xml' ) === 0 ||
stripos( $content, '<html' ) === 0 ||
stripos( $content, '<!DOCTYPE' ) === 0;
}
static private function _is_html_prepare( $content ) {
if ( strlen( $content ) > 1000 ) {
$content = substr( $content, 0, 1000 );
}
if ( strstr( $content, '<!--' ) !== false ) {
$content = preg_replace( '~<!--.*?-->~s', '', $content );
}
$content = ltrim( $content, "\x00\x09\x0A\x0D\x20\xBB\xBF\xEF" );
return $content;
}
/**
* If content can handle HTML comments, can disable printout per request using filter 'w3tc_can_print_comment'
*
* @param unknown $buffer
* @return bool
*/
static public function can_print_comment( $buffer ) {
if ( function_exists( 'apply_filters' ) )
return apply_filters( 'w3tc_can_print_comment', Util_Content::is_html_xml( $buffer ) && !defined( 'DOING_AJAX' ) );
return Util_Content::is_html_xml( $buffer ) && !defined( 'DOING_AJAX' );
}
/**
* Returns GMT date
*
* @param integer $time
* @return string
*/
static public function http_date( $time ) {
return gmdate( 'D, d M Y H:i:s \G\M\T', $time );
}
/**
* Escapes HTML comment
*
* @param string $comment
* @return mixed
*/
static public function escape_comment( $comment ) {
while ( strstr( $comment, '--' ) !== false ) {
$comment = str_replace( '--', '- -', $comment );
}
return $comment;
}
/**
* Deprecated. Added to prevent loading-order errors during upgrades
* from older w3tc plugin versions
**/
static public function is_database_error() {
return false;
}
/**
* Converts
* 127.0.0.1:1234 to ( '123.0.0.1', 1234 )
* tls://127.0.0.1:1234 to ( 'tls://123.0.0.1', 1234 )
* unix:/my/pipe to ( 'unix:/my/pipe', 0 )
*
* Doesnt fit to that class perfectly but selected due to common usage
* of loaded classes
*/
static public function endpoint_to_host_port( $server, $port_default = 0 ) {
$p = strrpos( $server, ':' );
if ( substr( $server, 0, 5 ) == 'unix:' || $p === false ) {
return array( trim( $server ), $port_default );
}
return array(
trim( substr( $server, 0, $p ) ),
(int)substr( $server, $p + 1 ) );
}
}