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<?php
/**
* Handles minifying HTML markup.
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
class autoptimizeHTML extends autoptimizeBase
{
/**
* Whether HTML comments are kept.
*
* @var bool
*/
private $keepcomments = false;
/**
* Whether to force xhtml compatibility.
*
* @var bool
*/
private $forcexhtml = false;
/**
* Things to exclude from being minifed.
*
* @var array
*/
private $exclude = array(
'<!-- ngg_resource_manager_marker -->',
'<!--noindex-->',
'<!--/noindex-->',
);
public function read( $options )
{
// Remove the HTML comments?
$this->keepcomments = (bool) $options['keepcomments'];
// Filter to force xhtml.
$this->forcexhtml = (bool) apply_filters( 'autoptimize_filter_html_forcexhtml', false );
// Filterable strings to be excluded from HTML minification.
$exclude = apply_filters( 'autoptimize_filter_html_exclude', '' );
if ( '' !== $exclude ) {
$exclude_arr = array_filter( array_map( 'trim', explode( ',', $exclude ) ) );
$this->exclude = array_merge( $exclude_arr, $this->exclude );
}
// Nothing else for HTML!
return true;
}
/**
* Minifies HTML.
*
* @return bool
*/
public function minify()
{
$noptimize = apply_filters( 'autoptimize_filter_html_noptimize', false, $this->content );
if ( $noptimize ) {
return false;
}
// Wrap the to-be-excluded strings in noptimize tags.
foreach ( $this->exclude as $str ) {
if ( false !== strpos( $this->content, $str ) ) {
$replacement = '<!--noptimize-->' . $str . '<!--/noptimize-->';
$this->content = str_replace( $str, $replacement, $this->content );
}
}
// Noptimize.
$this->content = $this->hide_noptimize( $this->content );
// Preparing options for Minify_HTML.
$options = array( 'keepComments' => $this->keepcomments );
if ( $this->forcexhtml ) {
$options['xhtml'] = true;
}
$tmp_content = Minify_HTML::minify( $this->content, $options );
if ( ! empty( $tmp_content ) ) {
$this->content = $tmp_content;
unset( $tmp_content );
}
// Restore noptimize.
$this->content = $this->restore_noptimize( $this->content );
// Remove the noptimize-wrapper from around the excluded strings.
foreach ( $this->exclude as $str ) {
$replacement = '<!--noptimize-->' . $str . '<!--/noptimize-->';
if ( false !== strpos( $this->content, $replacement ) ) {
$this->content = str_replace( $replacement, $str, $this->content );
}
}
// Revslider data attribs somehow suffer from HTML optimization, this fixes that!
if ( class_exists( 'RevSlider' ) && apply_filters( 'autoptimize_filter_html_dataattrib_cleanup', false ) ) {
$this->content = preg_replace( '#\n(data-.*$)\n#Um', ' $1 ', $this->content );
$this->content = preg_replace( '#<[^>]*(=\"[^"\'<>\s]*\")(\w)#', '$1 $2', $this->content );
}
return true;
}
/**
* Doesn't do much in case of HTML (no cache in css/js sense there)
*
* @return true
*/
public function cache()
{
return true;
}
/**
* Returns the HTML markup.
*
* @return string
*/
public function getcontent()
{
return $this->content;
}
}
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