dedecms调用指定模板源码分析

function GetTempletFile()
    {
 global $cfg_basedir,$cfg_templets_dir,$cfg_df_style;
 $cid = $this->ChannelUnit->ChannelInfos['nid'];
 if(!empty($this->Fields['templet']))
 {
     $filetag = MfTemplet($this->Fields['templet']);
   //  if( !preg_match("#/#", $filetag) ) $filetag = $GLOBALS['cfg_df_style'].'/'.$filetag;
 }
 else
 {
     $filetag = MfTemplet($this->Typelink->TypeInfos["temparticle"]);

 }
 $tid = $this->Fields['typeid'];
 $filetag = str_replace('{cid}', $cid,$filetag);
 $filetag = str_replace('{tid}', $tid,$filetag);
 $tmpfile = $cfg_basedir.$cfg_templets_dir.'/'.$filetag;
 if($cid=='spec')
 {
     if( !empty($this->Fields['templet']) )
     {
  $tmpfile = $cfg_basedir.$cfg_templets_dir.'/'.$filetag;
     }
     else
     {
  $tmpfile = $cfg_basedir.$cfg_templets_dir."/{$cfg_df_style}/article_spec.htm";
     }
 }
 if(!file_exists($tmpfile))
 {
     $tmpfile = $cfg_basedir.$cfg_templets_dir."/{$cfg_df_style}/".($cid=='spec' ? 'article_spec.htm' : 'article_default.htm');
 }
 if (!preg_match("#.htm$#", $tmpfile)) return FALSE;
 return $tmpfile;
    }