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自用模板类！请老鸟拍砖

时间：2010-10-09

来源：互联网

复制代码

if(!defined('ROOT')) exit();
class Template{
private $leftTag="{";
private $rightTag="}";
private $cacheTime=0;
private $cache_dir="";
private $tpl_dir="";
private $tpl_c_dir="";
private $tVar=array();
public function __construct(){
$this->cache_dir=ROOT."cache/";
$this->tpl_dir=ROOT."tpl/";
$this->tpl_c_dir=ROOT."tpl_c/";
if(defined('L_Tag')){
$this->leftTag=L_Tag;
}
if(defined('R_Tag')){
$this->reftTag=R_Tag;
}
if(defined('Cache_Dir')&&is_dir(Cache_Dir)){
$this->cache_dir=preg_match("#/$#i",Cache_Dir)?Cache_Dir:Cache_Dir."/";
}
if(defined('Tpl_Dir')&&is_dir(Tpl_Dir)){
$this->tpl_dir=preg_match("#/$#i",Tpl_Dir)?Tpl_Dir:Tpl_Dir."/";
}
if(defined('Tpl_C_Dir')&&is_dir(Tpl_C_Dir)){
$this->tpl_c_dir=preg_match("#/$#i",Tpl_C_Dir)?Tpl_C_Dir:Tpl_C_Dir."/";
}
}
public function assign($var,$val=''){
if(is_array($var)){
$this->tVar=array_merge($this->tVar,$var);
}else if(is_object($var)){
foreach($var as $k=>$v){
$this->tVar[$k]=$v;
}
}else if($var!=''){
$this->tVar[$var]=$val;
}
}
public function display($tpl){
if($tpl=="" || $tpl==null){
exit();
}
$source=$this->tpl_dir.$tpl;
$to=$this->tpl_c_dir.md5($tpl).".tpl.php";
//if(!file_exists($to) || filemtime($to)<filemtime($source)){
$this->parse($source,$to);
//}
extract($this->tVar,EXTR_OVERWRITE);
include "$to";
return;
}
private function parse($s,$t){
if(!file_exists($s)){
die("模板 $s 不存在");
}
$content=file_get_contents($s);
$l=$this->leftTag;
$r=$this->rightTag;
//{load 'inc/head.html'}
$content=preg_replace("#{$l}load\s+'([^']+)'$r#ei","\$this->loadTemplate('\\1')",$content);
//{if($title==2)}
$content=preg_replace("#$l(if\s*$[^$\r\n]+\))$r#i",'<?php \\1{ ?>',$content);
//{foreach($title as $k=>$v)}
$content=preg_replace("#{$l}foreach\s*$([^$\r\n]+)\)$r#i",'<?php foreach((array)\\1){ ?>',$content);
//{for($i=1;$i<10;$i++)}
$content=preg_replace("#$l(for$[^$\r\n]+\))$r#i",'<?php \\1{ ?>',$content);
//{else}、{end}
$content=preg_replace("#{$l}else$r#i","<?php } else { ?>",$content);
$content=preg_replace("#{$l}end$r#i","<?php } ?>",$content);
//{include 'head.php'}
$content=preg_replace("#{$l}include\s+'([^']+)'$r#","<?php include '\\1'; ?>",$content);
//变量
$content=preg_replace("#$l(\\$[^{$r}\r\n]+)$r#ei","\$this->parseVar('\\1')",$content);
$content=preg_replace("#[\r\n]{2,}#i","\r\n",$content);
$content=preg_replace("#<!--[^>]+>#i","",$content);
//检查字段
$content="<?php if(!defined('ROOT')) exit();/* 编译文件创建于".date('Y-m-d')." */?>\r\n".$content;
$f=fopen($t,"w+");
fwrite($f,$content);
fclose($f);
}
function loadTemplate($file){
return file_get_contents($this->tpl_dir.(preg_match("#^/#i",$file)?substr($file,1):$file));
}
private function parseVar($str){
if(strpos($str,"|")===false){
return "<?php echo $str; ?>";
}
$arr=explode("|",$str);
$var=array_shift($arr);
foreach($arr as $v){
switch(strtolower($v)){
case 'strip':
$var="clearHtml($var)";break;
case 'htmlencode':
$var="htmlencode($var)";break;
case 'htmldecode':
$var="htmldecode($var)";break;
//还可增加函数
}
if(preg_match("#[0-9]+#i",$v)){
$var="getSub($var,$v)";
}else if(strpos(strtolower($v),"date(")!==false){
$var=str_replace(")",",strtotime($var))",$v);
}
}
return "<?php echo $var; ?>";
}
}