<?php 

function compress_html($higrid_uncompress_html_source){
    $chunks = preg_split('/(<pre.*?\/pre>)/ms', $higrid_uncompress_html_source, - 1, PREG_SPLIT_DELIM_CAPTURE);
    $higrid_uncompress_html_source = ''; // [higrid.net]修改压缩html : 清除换行符,清除制表符,去掉注释标记
    foreach ($chunks as $c) {
        if (strpos($c, '<pre') !== 0) {
            // [higrid.net] remove CSS & JS comments
   			$c = preg_replace('/([^:]\/\/[\s\S]*?\n)/s', '', $c);
            // [higrid.net] remove new lines & tabs
            $c = preg_replace('/[\\n\\r\\t]+/', ' ', $c);
            // [higrid.net] remove extra whitespace
            $c = preg_replace('/\\s{2,}/', ' ', $c);
            // [higrid.net] remove inter-tag whitespace
            $c = preg_replace('/>\\s</', '><', $c);
        }
        $higrid_uncompress_html_source .= $c;
    }
    return $higrid_uncompress_html_source;
}

function compress_html_main ($buffer){
		$param1 = param(0,'');
		$param2 = param(1,'');
		if(($param1=='thread'&&$param2=='create')||($param1=='post'&&$param2=='update')||($param1=='post'&&$param2=='create'))return $buffer;//新文章和更新页面不压缩
		$initial=strlen($buffer);
		$buffer_out = compress_html($buffer);
        $final=strlen($buffer_out);  
        $savings=($initial-$final)/$initial*100;  
        $savings=round($savings, 2);  
        $buffer_out.="\n<!--压缩前: $initial bytes; 压缩后: $final bytes; 节约：$savings% -->";  
    return $buffer_out;
}
if($theme_plugin['compress_enable'])ob_start("compress_html_main");

?>