通知模板范文 Javascript模板技术

Javascript模板技术  

　　/***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(!ntainsKey(varname)) {  this varkeys put(varname this varname(varname)); } if(!ntainsKey(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 $ ); str=str replace(re { +name+ } ); this set_var(parent str);}

　　/** * 进行变量替换 * @param handle * @return  */function _subst(handle){ if(!this loadfile(handle)) {  this halt( subst:unable to load +handle); } var str=this get_var(handle); var keys=this varkeys keySet(); //alert(keys length); for(var i= ;i<keys length;i++) {  var key=keys[i];  var re=new RegExp(this varkeys get(key) g )  str=str replace(re this varvals get(key)); }    //alert(handle+ ++++++++++++++++++ +str); return str;}  /** * 进行变量复制 * @param target * @param handle * @param append */function _parse(target handle append){ var str=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 * @param varname * @return  */function _p(varname){ return this finish(this get_var(varname));}  /** * parse()和p()的合并 * @param target * @param handle * @param append * @return  */function _pparse(target handle append){ this parse(target handle append); document writeln(this p(target));}

　　/** * 加载模板文件 * @param handle * @return  */function _loadfile(handle){ if(ntainsKey(handle) && this varvals get(handle)!=null) {  return true; } if(!ntainsKey(handle)) {  _halt( loadfile: +handle+ is not a valid handle );  return false; } var  filename=this file get(handle); if(!this file_exists(filename)) {  this halt( loadfile:while loading +handle+ +filename+ does not exist );  return false; } try {  var fr=this fso OpenTextFile(filename);   var s=fr ReadAll();  if(s== )  {   halt( loadfile:while loading +handle+ +filename+ is empty );   return false;  }  this set_var(handle s); } catch(e) {    } return true;}

　　/** * 获取变量 * @param varname * @return  */function _get_var(varname){ if(ntainsKey(varname))  return this varvals get(varname); else  return ;}

　　/** * 判断目录 * @param path * @return  */function _is_dir(path){ if(this fso FolderExists(path))  return true; else  return false;}  /*** 判断文件* @param filename* @return */function _file_exists(filename){ if(this fso FileExists(filename))  return true; else  return false;}  /** * 文件名处理 * @param filename * @return  */function _filename(filename){ if(!this file_exists(this root+filename)) {  this halt( filename:file +filename+ does not exist ); } return this root+filename;}  /** * 变量名处理 * @param varname * @return  */function _varname(varname){ return { +varname+ } ;}  /** * 完成字符串的处理 * @param str * @return  */function _finish(str){ var re=new RegExp( {[^ \t\r\n\}]+\} g ); if(this unknowns== remove ) {  str=str replace(re ); } else if(this unknowns== ment ) {  str=str replace(re <! Template Variable undefined > ); } else {  ; } return str;}

　　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( ); }}  function _haltmsg(msg){ alert( Template Error: +msg);}

　　/** * HashMap构造函数 */function HashMap(){    this length = ;    this prefix = hashmap_prefix_ _ ;}/** * 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){    return typeof this[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(){    var arrKeySet = new Array();    var index = ;    for(var strKey in this)    {        if(strKey substring( this prefix length) == this prefix)            arrKeySet[index ++] = strKey substring(this prefix length);    }    return arrKeySet length == ? null : arrKeySet;}/** * 从HashMap中获取value的集合 以数组形式返回 */HashMap prototype values = function(){    var arrValues = new Array();    var index = ;    for(var strKey in this)    {        if(strKey substring( this prefix length) == this prefix)            arrValues[index ++] = this[strKey];    }    return arrValues length == ? null : arrValues;}/** * 获取HashMap的value值数量 */HashMap prototype size = function(){    return this length;}/** * 删除指定的值 */HashMap prototype remove = function(key){    delete this[this prefix + key];    this length ;}/** * 清空HashMap */HashMap prototype clear = function(){    for(var strKey in this)    {        if(strKey substring( this prefix length) == this prefix)            delete this[strKey];       }    this length = ;}/** * 判断HashMap是否为空 */HashMap prototype isEmpty = function(){    return this length == ;}/** * 判断HashMap是否存在某个key */HntainsKey = function(key){    for(var strKey in this)    {       if(strKey == this prefix + key)          return true;      }    return false;}/** * 判断HashMap是否存在某个value */HntainsValue = function(value){    for(var strKey in this)    {       if(this[strKey] == value)          return true;      }    return false;}/** * 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(nstructor != JHashMap)        return;    var arrKey = map keySet();    var arrValue = map values();    for(var i in arrKey)       this put(arrKey[i] arrValue[i]);}//toStringHashMap prototype toString = function(){    var str = ;    for(var strKey in this)

　　{        if(strKey substring( this prefix length) == this prefix)              str += strKey substring(this prefix length)                   + : + this[strKey] + rn ;    }    return str;}

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