Javascript
Javascript模板
/***Template.class.js***/
functionTemplate()
{
this.classname="Template";
this.debug=false;
this.file=newHashMap();
this.root="";
this.varkeys=newHashMap();
this.varvals=newHashMap();
this.unknowns="remove";
this.halt_on_error="yes";
this.last_error="";
this.fso=newActiveXObject("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
*@paramroot
*/
function_set_root(root)
{
if(!this.is_dir(root))
{
this.halt("set_root:"+root+"isnotadirectory.");
}
this.root=root;
}
/**
*设定对未知模板变量的处理办法
*@paramunknowns
*/
function_set_unknowns(unknowns)
{
this.unknowns=unknowns;
}
/**
*设定模板文件
*@paramhandle
*@paramfilename
*/
function_set_file(handle,filename)
{
this.file.put(handle,this.filename(filename));
}
/**
*设定模板变量
*@paramvarname
*@paramvalue
*/
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
*@paramparent
*@paramhandle
*@paramname
*/
function_set_block(parent,handle,name)
{
if(!this.loadfile(parent))
{
this.halt("subst:unabletoload"+parent);
}
if(name=="")
{
name=handle;
}
varstr=this.get_var(parent);
varre=newRegExp("([sS.]*)");
//Matcherm=p.matcher(str);
//varrs=m.find();
//vart=m.group(m.groupCount());
//this.set_var(handle,t);
vararr=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
*@paramhandle
*@return
*/
function_subst(handle)
{
if(!this.loadfile(handle))
{
this.halt("subst:unabletoload"+handle);
}
varstr=this.get_var(handle);
varkeys=this.varkeys.keySet();
//alert(keys.length);
for(vari=0;i { varkey=keys[i]; varre=newRegExp(this.varkeys.get(key),"g") str=str.replace(re,this.varvals.get(key)); } //alert(handle+"++++++++++++++++++"+str); returnstr; } /** *进行变量复制 *@paramtarget *@paramhandle *@paramappend */ function_parse(target,handle,append) { varstr=this.subst(handle); if(append) { this.set_var(target,this.get_var(target)+str); } else { this.set_var(target,str); } } /** *返回替换后的文件 *@paramvarname *@return */ function_p(varname) { returnthis.finish(this.get_var(varname)); } /** *parse()和p()的合并 *@paramtarget *@paramhandle *@paramappend *@return */ function_pparse(target,handle,append) { this.parse(target,handle,append); document.writeln(this.p(target)); } /** *加载模板文件 *@paramhandle *@return */ function_loadfile(handle) { if(this.varkeys.containsKey(handle)&&this.varvals.get(handle)!=null) { returntrue; } if(!this.file.containsKey(handle)) { _halt("loadfile:"+handle+"isnotavalidhandle."); returnfalse; } varfilename=this.file.get(handle); if(!this.file_exists(filename)) { this.halt("loadfile:whileloading"+handle+","+filename+"doesnotexist."); returnfalse; } try { varfr=this.fso.OpenTextFile(filename); vars=fr.ReadAll(); if(s=="") { halt("loadfile:whileloading"+handle+","+filename+"isempty."); returnfalse; } this.set_var(handle,s); } catch(e) { } returntrue; } /** *获取变量 *@paramvarname *@return */ function_get_var(varname) { if(this.varvals.containsKey(varname)) returnthis.varvals.get(varname); else return""; } /** *判断目录 *@parampath *@return */ function_is_dir(path) { if(this.fso.FolderExists(path)) returntrue; else returnfalse; } /** *判断文件 *@paramfilename *@return */ function_file_exists(filename) { if(this.fso.FileExists(filename)) returntrue; else returnfalse; } /** *文件名处理 *@paramfilename *@return */ function_filename(filename) { if(!this.file_exists(this.root+filename)) { this.halt("filename:file"+filename+"doesnotexist."); } returnthis.root+filename; } /** *变量名处理 *@paramvarname *@return */ function_varname(varname) { return"{"+varname+"}"; } /** *完成字符串的处理 *@paramstr *@return */ function_finish(str) { varre=newRegExp("{[^trn}]+}","g"); if(this.unknowns=="remove") { str=str.replace(re,""); } elseif(this.unknowns=="comment") { str=str.replace(re,""); } else { } returnstr; } function_halt(msg) { this.last_error=msg; if(this.halt_on_error!="no") { _haltmsg(msg); } if(this.halt_on_error=="yes") { alert("Halted."); //System.exit(0); } } function_haltmsg(msg) { alert("TemplateError:"+msg); } /** *HashMap构造函数 */ functionHashMap() { this.length=0; this.prefix="hashmap_prefix_20050524_"; } /** *向HashMap中添加键值对 */ HashMap.prototype.put=function(key,value) { this[this.prefix+key]=value; this.length++; } /** *从HashMap中获取value值 */ HashMap.prototype.get=function(key) { returntypeofthis[this.prefix+key]=="undefined" ?null:this[this.prefix+key]; } /** *从HashMap中获取所有key的集合，以数组形式返回 */ HashMap.prototype.keySet=function() { vararrKeySet=newArray(); varindex=0; for(varstrKeyinthis) { if(strKey.substring(0,this.prefix.length)==this.prefix) arrKeySet[index++]=strKey.substring(this.prefix.length); } returnarrKeySet.length==0?null:arrKeySet; } /** *从HashMap中获取value的集合，以数组形式返回 */ HashMap.prototype.values=function() { vararrValues=newArray(); varindex=0; for(varstrKeyinthis) { if(strKey.substring(0,this.prefix.length)==this.prefix) arrValues[index++]=this[strKey]; } returnarrValues.length==0?null:arrValues; } /** *获取HashMap的value值数量 */ HashMap.prototype.size=function() { returnthis.length; } /** *删除指定的值 */ HashMap.prototype.remove=function(key) { this[this.prefix+key]; this.length--; } /** *清空HashMap */ HashMap.prototype.clear=function() { for(varstrKeyinthis) { if(strKey.substring(0,this.prefix.length)==this.prefix) this[strKey]; } this.length=0; } /** *判断HashMap是否为空 */ HashMap.prototype.isEmpty=function() { returnthis.length==0; } /** *判断HashMap是否存在某个key */ HashMap.prototype.containsKey=function(key) { for(varstrKeyinthis) { if(strKey==this.prefix+key) returntrue; } returnfalse; } /** *判断HashMap是否存在某个value */ HashMap.prototype.containsValue=function(value) { for(varstrKeyinthis) { if(this[strKey]==value) returntrue; } returnfalse; } /** *把一个HashMap的值加入到另一个HashMap中，参数必须是HashMap */ HashMap.prototype.putAll=function(map) { if(map==null) return; if(map.constructor!=JHashMap) return; vararrKey=map.keySet(); vararrValue=map.values(); for(variinarrKey) this.put(arrKey[i],arrValue[i]); } //toString HashMap.prototype.toString=function() { varstr=""; for(varstrKeyinthis) { if(strKey.substring(0,this.prefix.length)==this.prefix) str+=strKey.substring(this.prefix.length) +":"+this[strKey]+"rn"; } returnstr; } "http://www.w3.org/TR/html4... {HEAD} {WELCOME} {FOOT} vartmplt=newTemplate(); varroot=location.href; root=unescape(root.substring(8,root.lastIndexOf("/")+1)); tmplt.set_root(root); tmplt.set_file("fh","tpl/main.htm"); tmplt.set_file("head","tpl/head.htm"); tmplt.set_file("foot","tpl/foot.htm"); tmplt.set_block("fh","BROWS","rows"); tmplt.set_block("BROWS","BCOLS","cols"); tmplt.set_var("WELCOME","欢迎光临"); for(vari=0;i<10;i++) { tmplt.set_var("cols",""); for(varj=0;j<10;j++) { tmplt.set_var("NUMBER",i+"."+j); tmplt.parse("cols","BCOLS",true); } tmplt.parse("rows","BROWS",true); } tmplt.parse("HEAD","head",false); tmplt.parse("FOOT","foot",false); tmplt.pparse("out","fh",false);
{NUMBER}