Javascript模板技术
2024-09-06 12:42:33
供稿：网友
/***Template.class.js***/
function Template()
{
this.classname="Template";
this.debug=false;
this.file=new HashMap();
this.root="";
this.varkeys=new HashMap();
this.varvals=new HashMap();
this.unknowns="remove";
this.halt_on_error="yes";
this.last_error="";
this.fso=new ActiveXObject("Scripting.FileSystemObject");
this.set_root=_set_root;
this.set_unknowns=_set_unknowns;
this.get_var=_get_var;
this.set_file=_set_file;
this.set_var=_set_var;
this.set_block=_set_block;
this.subst=_subst;
this.parse=_parse;
this.p=_p;
this.pparse=_pparse;
this.finish=_finish;
this.loadfile=_loadfile;
this.is_dir=_is_dir;
this.file_exists=_file_exists;
this.filename=_filename;
this.varname=_varname;
this.halt=_halt;
this.haltmsg=_haltmsg;
}
/**
* 设置模板文件根目录
* @param root
*/
function _set_root(root)
{
if(!this.is_dir(root))
{
this.halt("set_root:"+root+" is not a directory.");
}
this.root=root;
}
/**
* 设定对未知模板变量的处理办法
* @param unknowns
*/
function _set_unknowns(unknowns)
{
this.unknowns=unknowns;
}
/**
* 设定模板文件
* @param handle
* @param filename
*/
function _set_file(handle,filename)
{
this.file.put(handle,this.filename(filename));
}
/**
* 设定模板变量
* @param varname
* @param value
*/
function _set_var(varname,value)
{
if(!this.varkeys.containsKey(varname))
{
this.varkeys.put(varname,this.varname(varname));
}
if(!this.varvals.containsKey(varname))
{
this.varvals.put(varname,value);
}
else
{
this.varvals.remove(varname);
this.varvals.put(varname,value);
}
//alert(varname+"=================="+value);
}
/**
* 设定块变量
* @param parent
* @param handle
* @param name
*/
function _set_block(parent,handle,name)
{
if(!this.loadfile(parent))
{
this.halt("subst:unable to load "+parent);
}
if(name=="")
{
name=handle;
}
var str=this.get_var(parent);
var re=new RegExp("<!--//s+BEGIN " + handle + "//s+-->([//s//S.]*)<!--//s+END " + handle + "//s+-->");
//Matcher m=p.matcher(str);
//var rs=m.find();
//var t=m.group(m.groupCount());
//this.set_var(handle,t);
var arr=re.exec(str);
if(arr!=null)
this.set_var(handle,RegExp.$1);
str=str.replace(re,"{"+name+"}");
this.set_var(parent,str);
}
/**
* 进行变量替换
* @param handle
* @return
