谁能帮忙注释下代码。有研究代码的来看ia谢谢了

cash2914 2010-12-07 05:19:11



	function loadTempletFile($file,$refresh=false) {

		global $royalfield,$messageStack;

		$cachedir = DIR_FS_ROOT.'cache/templets/'.md5(strtolower(dirname($file))).'/';

		$cachename = $cachedir.basename($file).'.php';  

		if(!$refresh&&is_file($cachename)&&filemtime($cachename)>filemtime($file)&&filemtime($cachename)>time()-864000){

			return file_get_contents($cachename);

		} else {

			$filestr = $this->parseFileString($file);

			$shiftpos = 0;

			$this->templetstring = '<?php if(!defined("ROYALERP_INCLUDE")) die("<a href=\'http://www.royalerp.com\'>RoyalERP.com</a>");?>'.$this->loadTempletString($filestr,$shiftpos);

		  	$this->templetstring = parseTagInnerHTML($this->templetstring,'royalfield',$default);

			

			@mkdir_r($cachedir);

			if(is_writable($cachedir)){

				$fp = @fopen($cachename,"w") or die("RoaylERP Create File False");

				fwrite($fp,$this->templetstring);

				fclose($fp);

			}

			if ($messageStack->size > 0) {

			    $this->templetstring.= $messageStack->output();

			}

			return $this->templetstring;

		}

	}

	function loadTempletFileString($data){

		global $royalfield;

		$filestr = $this->parseFileString($data,true);

		$shiftpos = 0;

		$this->templetstring = $this->loadTempletString($filestr,$shiftpos);

		$this->templetstring = parseTagInnerHTML($this->templetstring,'royalfield',$default);

		return $this->templetstring;

	}

	function parseFileString($file,$istext=false) {

		if($istext){

			$filestr= $file;

		} else {

			$filestr= ' '.file_get_contents($file);

		}

		$startpos = 0;

		$includepos = strpos($filestr,'<include:',$startpos);

		while(false!==$includepos) {

			if($includepos>$startpos) {

				$string=substr($filestr,$startpos,$includepos-1);

				$spacepos = strpos($filestr,' ',$includepos);

				if($spacepos>$includepos+9){

					$tagname = substr($filestr,$includepos+9,$spacepos-$includepos-9);

					$filenamepos = strpos($filestr,'filename',$includepos);

					$filenamelastpos = strpos($filestr,'>',$includepos);

					if($filestr[$filenamelastpos-1]=='/'){

						$filenamelastpos++;

						$tmpstr = substr($filestr,$filenamepos,$filenamelastpos-$filenamepos);

					} else {

						$filenamelastpos = strpos($filestr,'</include:'.$tagname.'>',$includepos);

						$filenamelastpos += strlen($tagname)+11;

						$tmpstr = substr($filestr,$filenamepos,$filenamelastpos-$filenamepos);

					}

					

					$filenames = explode('"',$tmpstr,3);

					$tfile = DIR_FS_ROOT.'templets/'.DEFAULT_CSS_PATH.'/'.($tagname==''?'':$tagname.'/').$filenames[1];

					if(file_exists($tfile)) {

						$loadstring = file_get_contents($tfile);

					} else {

						$loadstring = "";

					}

					$laststring = substr($filestr,$filenamelastpos);

					$filestr = $string . $loadstring .$laststring;

				}

			}

			if($startpos<strlen($filestr)) {

				$includepos = strpos($filestr,'<include:',$startpos);

			} else {

				break;

			}

		}

		return trim($filestr);

	}

	function loadTempletString(&$filestr,&$shiftpos,$issub=false) {

		$lastpos = $shiftpos;

		$strlen = strlen($filestr);

		$ret = "";

		while ($shiftpos<$strlen) {

			$matchs = array();

			$subret = "";

			if($filestr[$shiftpos]=='<'&&preg_match($this->reg_match_string,substr($filestr,$shiftpos,$this->maxtaglen+3),$matchs)) { //find

				if($shiftpos>$lastpos){

					$ret.=substr($filestr,$lastpos,$shiftpos-$lastpos);

					$lastpos = $shiftpos;

				}

				$matchlen = strlen($matchs[0]);

				$currenttag = substr($matchs[0],1,$matchlen-2);

				$shiftpos+=$matchlen;

				

				$index1 = strpos($filestr,' ',$shiftpos)-$shiftpos;

				$index2 = strpos($filestr,'/>',$shiftpos)-$shiftpos;

				$index3x = strpos($filestr,'>',$shiftpos);

				$index3 = $index3x-$shiftpos;

				if($index1<0)$index1=100000;

				if($index2<0)$index2=100000;

				if($index3<0)$index3=100000;

				$minindex = min(min($index1,$index2),$index3);

				$tagclass = substr($filestr,$shiftpos,$minindex);

				$tagstring = '<'.$currenttag.':'.$tagclass;

				$shiftpos+=strlen($tagclass);

				

				while($shiftpos<$strlen){

					if(substr($filestr,$shiftpos,2)=='/>'){ //tag end

						if($shiftpos<=$index3x){

							$tagstring.='>';

							$ret.=$this->parseTempletTag($tagstring.'</'.substr($matchs[0],1).$tagclass.'>',$currenttag,$tagclass); //trans standard

							$shiftpos+=2;

							if($issub){

								return $ret;

							} else {

								$lastpos = $shiftpos;

								break;

							}

						} else {

							$tagstring.=$filestr[$shiftpos];

							$shiftpos++;

						}

					} else if(substr($filestr,$shiftpos,strlen('</'.substr($matchs[0],1).$tagclass.'>'))=='</'.substr($matchs[0],1).$tagclass.'>'){

						$ret.=$this->parseTempletTag($tagstring.'</'.substr($matchs[0],1).$tagclass.'>',$currenttag,$tagclass);

						$shiftpos+=strlen(substr($matchs[0],1).$tagclass)+3;

						if($issub){

							return $ret;

						} else {

							$lastpos = $shiftpos;

							break;

						}

					} else if($filestr[$shiftpos]=='<'&&preg_match($this->reg_match_string,substr($filestr,$shiftpos,$this->maxtaglen+3))) {//enbed tag

						$tmp = $this->loadTempletString($filestr,$shiftpos,true);

						$subret.=$tmp;

						$tagstring.=$tmp;						

					} else {

						$tagstring.=$filestr[$shiftpos];

						$shiftpos++;

					}

				}

			} else {

				$shiftpos++;

			}

		}

		if($shiftpos>$lastpos){

			$ret.=substr($filestr,$lastpos,$shiftpos-$lastpos);

			$lastpos = $shiftpos;

		}

		return $ret;

	}

	function parseTempletTag($tagstring,$namespace='',$tagname=''){

		global $db;

		$pos = strpos($tagstring,'>');

		require_once(DIR_FS_CLASSES.'xml.php');

		$xml = new RoyalXmlParser();

		$string = substr($tagstring,0,$pos);

		if(substr($string,'-1')=='/')$string = substr($string,0,$pos-1);

		$xml->parseString($string.'></'.$namespace.':'.$tagname.'>');

		$tagarray = $xml->getTree();

		$tagarray = $tagarray[$namespace.':'.$tagname];

		switch ($namespace) {

			case 'fun':

				if(eip_not_null($tagarray['params'])){

					$phpstring = '<?php echo '.$tagname.'('.$tagarray['params'].');?>';

				} else {

					$phpstring = '<?php echo '.$tagname.';?>';

				}

				return $phpstring;

			case 'const':

				return '<?php echo '.$tagname.';?>';

			case 'exp':

				return '<?php '.$tagname.';?>';

			case 'var':

				if(isset($tagarray['params'])&&$tagarray['params']!=""){

					return '<?php echo $'.$tagname.'["'.$tagarray['params'].'"];?>';

				}

				return '<?php echo $'.$tagname.';?>';

			case 'field':

				return '<?php echo $royalfield["'.$tagname.'"];?>';

			case 'sys':

				$tagarray['innerHTML'] = substr($tagstring,$pos+1,strlen($tagstring)-strlen('</'.$namespace.':'.$tagname.'>')-$pos-1);

				if(file_exists(DIR_FS_INCLUDES.'/tags/tag_'.$tagname.'.php')){

					include_once(DIR_FS_INCLUDES.'/tags/tag_'.$tagname.'.php');

					$funcname = $namespace.'_'.$tagname.'_tag';

					$retvalue = "";

					if($funcname($tagarray,$retvalue)){

						return $retvalue;

					}

				} else {

					return '';

				}

			default:

				$tagarray['innerHTML'] = substr($tagstring,$pos+1,strlen($tagstring)-strlen('</'.$namespace.':'.$tagname.'>')-$pos-1);

				if(file_exists(DIR_FS_ROOT.$namespace.'/tags/tag_'.$tagname.'.php')){

					include_once(DIR_FS_ROOT.$namespace.'/tags/tag_'.$tagname.'.php');

					$funcname = $namespace.'_'.$tagname.'_tag';

					$retvalue = "";

					if($funcname($tagarray,$retvalue)){

						return $retvalue;

					}

				} else {

					return '';

				}

		}

	}

}

?>