Have you ever had a headache looking at messy code written by others? Have you ever been troubled by looking at BWindow code? Have you ever been hesitant about the contradiction between reducing the size of JS and the readability of JS? The best way is to have a code A program for formatting and code compression is finally available today. It is written in pure JS, and of course it is open source. Sorry, let me make an advertisement first:). I have wanted to write this code for a long time, and I finally used it today. I finished writing it over the weekend. Due to the rush of writing, there are still some small bugs. Please pay attention to updates frequently!
<HTML><HEAD><TITLE>Format</TITLE>
<META content="MSHTML 6.00.2800.1528" name=GENERATOR>
<META content="" name=Author>
<META content="" name=Keywords>
<META content="" name=Description></HEAD>
<BODY>
<SCRIPT language=JavaScript>
<!--
/**//**//**//**
** ================================================ ==================================================
** Class name: CLASS_FORMATER
** Function: JS formatting
** Example:
-------------------------------------------------- --------------------------------------------------
var xx = new CLASS_FORMATER(code);
document.getElementById("display").innerHTML = xx.format();
-------------------------------------------------- --------------------------------------------------
** Author: ttyp
** Email: [email protected]
** Date: 2006-5-21
** Version: 0.1
** ================================================ ==================================================
**/
function CLASS_FORMAT(code){
//Hash table class
function Hashtable(){
this._hash = new Object();
this.add = function(key,value){
if(typeof(key)!="undefined"){
if(this.contains(key)==false){
this._hash[key]=typeof(value)=="undefined"?null:value;
return true;
} else {
return false;
}
} else {
return false;
}
}
this.remove = function(key){delete this._hash[key];}
this.count = function(){var i=0;for(var k in this._hash){i++;} return i;}
this.items = function(key){return this._hash[key];}
this.contains = function(key){return typeof(this._hash[key])!="undefined";}
this.clear = function(){for(var k in this._hash){delete this._hash[k];}}
}
this._caseSensitive = true;
//Convert string to hash table
this.str2hashtable = function(key,cs){
var _key = key.split(/,/g);
var _hash = new Hashtable();
var _cs = true;
if(typeof(cs)=="undefined"||cs==null){
_cs = this._caseSensitive;
} else {
_cs = cs;
}
for(var i in _key){
if(_cs){
_hash.add(_key[i]);
} else {
_hash.add((_key[i]+"").toLowerCase());
}
}
return _hash;
}
//Get the code that needs to be converted
this._codetxt = code;
if(typeof(syntax)=="undefined"){
syntax = "";
}
this._deleteComment = false;
//Whether it is case sensitive
this._caseSensitive = true;
//Keywords that can be added after the block statement
this._blockElement = this.str2hashtable("switch,if,while,try,finally");
//It is a function declaration
this._function = this.str2hashtable("function");
//The semicolon in the parentheses of this line does not cause line breaks.
this._isFor = "for";
this._choiceElement = this.str2hashtable("else,catch");
this._beginBlock = "{";
this._endBlock = "}";
this._singleEyeElement = this.str2hashtable("var,new,return,else,delete,in,case");
//Get the split character
this._wordDelimiters= " ,.?!;:\/<>(){}[]"'rnt=+-|*%@#$^&";
//Quote characters
this._quotation = this.str2hashtable("",'");
//Line comment characters
this._lineComment = "//";
//Escape character
this._escape = "\";
//Start of multi-line references
this._commentOn = "/*";
//End of multi-line quotation
this._commentOff = "*/";
//Line terminator
this._rowEnd = ";";
this._in = "in";
this.isCompress = false;
this.style = 0;
this._tabNum = 0;
this.format = function() {
var codeArr = new Array();
var word_index = 0;
var htmlTxt = new Array();
if(this.isCompress){
this._deleteComment = true;
}
//Get the split character array (word segmentation)
for (var i = 0; i < this._codetxt.length; i++) {
if (this._wordDelimiters.indexOf(this._codetxt.charAt(i)) == -1) { //Keyword not found
if (codeArr[word_index] == null || typeof(codeArr[word_index]) == 'undefined') {
codeArr[word_index] = "";
}
codeArr[word_index] += this._codetxt.charAt(i);
} else {
if (typeof(codeArr[word_index]) != 'undefined' && codeArr[word_index].length > 0)
word_index++;
codeArr[word_index++] = this._codetxt.charAt(i);
}
}
var quote_opened = false; //Quote mark
var slash_star_comment_opened = false; //Multi-line comment mark
var slash_slash_comment_opened = false; //Single line comment mark
var line_num = 1; //line number
var quote_char = ""; //Quote mark type
var function_opened = false;
var bracket_open = false;
var for_open = false;
//According to the split word, display in blocks
for (var i=0; i <=word_index; i++){
//Handle empty lines (due to escaping)
if(typeof(codeArr[i])=="undefined"||codeArr[i].length==0){
continue;
} else if(codeArr[i]==" "||codeArr[i]=="t"){
if(slash_slash_comment_opened||slash_star_comment_opened){
if(!this._deleteComment){
htmlTxt[htmlTxt.length] = codeArr[i];
}
}
if(quote_opened){
htmlTxt[htmlTxt.length] = codeArr[i];
}
} else if(codeArr[i]=="n"){
//Handle newline
} else if (codeArr[i] == "r"){
slash_slash_comment_opened = false;
quote_opened = false;
line_num++;
if(!this.isCompress){
htmlTxt[htmlTxt.length] = "rn"+ this.getIdent();
}
//Process parameter markers in function
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&this.isFunction(codeArr[i])){
htmlTxt[htmlTxt.length] = codeArr[i] + " ";
function_opened = true;
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._isFor){
htmlTxt[htmlTxt.length] = codeArr[i];
for_open = true;
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]=="("){
bracket_open = true;
htmlTxt[htmlTxt.length] = codeArr[i];
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==")"){
bracket_open = false;
htmlTxt[htmlTxt.length] = codeArr[i];
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._rowEnd){
if(!this.isCompress){
if(!for_open){
if(i<word_index&&(codeArr[i+1]!="r"&&codeArr[i+1]!="n")){
htmlTxt[htmlTxt.length] = codeArr[i] + "n" + this.getIdent();
}else{
htmlTxt[htmlTxt.length] = codeArr[i] + this.getIdent();
}
}else{
htmlTxt[htmlTxt.length] = codeArr[i];
}
}else{
htmlTxt[htmlTxt.length] = codeArr[i];
}
} else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._beginBlock){
for_open = false;
if(!this.isCompress){
switch(this.style){
case 0:
this._tabNum++;
htmlTxt[htmlTxt.length] = codeArr[i] + "n" + this.getIdent();
break;
case 1:
htmlTxt[htmlTxt.length] = "n" + this.getIdent();
this._tabNum++;
htmlTxt[htmlTxt.length] = codeArr[i] + "n"+ this.getIdent();
break;
default:
this._tabNum++;
htmlTxt[htmlTxt.length] = codeArr[i];
break;
}
}else{
htmlTxt[htmlTxt.length] = codeArr[i];
}
} else if(!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened &&codeArr[i]==this._endBlock){
if(!this.isCompress){
this._tabNum--;
if(i<word_index&&codeArr[i+1]!=this._rowEnd){
htmlTxt[htmlTxt.length] = "n" + this.getIdent() + codeArr[i];
}else{
htmlTxt[htmlTxt.length] = "n" + this.getIdent() + codeArr[i];
}
}else{
if(i<word_index&&codeArr[i+1]!=this._rowEnd){
htmlTxt[htmlTxt.length] = codeArr[i] + this._rowEnd;
}else{
htmlTxt[htmlTxt.length] = codeArr[i];
}
}
//process keywords
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && this.isBlockElement(codeArr[i])){
htmlTxt[htmlTxt.length] = codeArr[i];
//Process built-in objects (add a space after)
} else if (!slash_slash_comment_opened&&!slash_star_comment_opened && !quote_opened && this.isSingleEyeElement(codeArr[i])){
if(codeArr[i]==this._in){
htmlTxt[htmlTxt.length] = " ";
}
htmlTxt[htmlTxt.length] = codeArr[i] + " ";
//Process double quotes (no escape characters before quotes)
} else if (!slash_star_comment_opened&&!slash_slash_comment_opened&&this._quotation.contains(codeArr[i])){
if (quote_opened){
// is the corresponding quotation mark
if(quote_char==codeArr[i]){
htmlTxt[htmlTxt.length] = codeArr[i];
quote_opened = false;
quote_char = "";
} else {
htmlTxt[htmlTxt.length] = codeArr[i];
}
} else {
htmlTxt[htmlTxt.length] = codeArr[i];
quote_opened = true;
quote_char = codeArr[i];
}
//Handle escape characters
} else if(codeArr[i] == this._escape){
htmlTxt[htmlTxt.length] = codeArr[i];
if(i<word_index-1){
if(codeArr[i+1].charCodeAt(0)>=32&&codeArr[i+1].charCodeAt(0)<=127){
htmlTxt[htmlTxt.length] = codeArr[i+1].substr(0,1);
htmlTxt[htmlTxt.length] = codeArr[i+1].substr(1);
i=i+1;
}
}
//Handle the beginning of multi-line comments
} else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isStartWith(this._commentOn,codeArr,i)){
slash_star_comment_opened = true;
if(!this._deleteComment){
htmlTxt[htmlTxt.length] = this._commentOn;
}
i = i + this.getSkipLength(this._commentOn);
//Process single line comments
} else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isStartWith(this._lineComment,codeArr,i)){
slash_slash_comment_opened = true;
if(!this._deleteComment){
htmlTxt[htmlTxt.length] = this._lineComment;
}
i = i + this.getSkipLength(this._lineComment);
//Handle ignored words
} else if (!slash_slash_comment_opened && !slash_star_comment_opened&&!quote_opened&&this.isStartWith(this._ignore,codeArr,i)){
slash_slash_comment_opened = true;
htmlTxt[htmlTxt.length] = this._ignore;
i = i + this.getSkipLength(this._ignore);
//End of processing multi-line comments
} else if (!quote_opened&&!slash_slash_comment_opened&&this.isStartWith(this._commentOff,codeArr,i)){
if (slash_star_comment_opened) {
slash_star_comment_opened = false;
if(!this._deleteComment){
htmlTxt[htmlTxt.length] = this._commentOff;
}
i = i + this.getSkipLength(this._commentOff);
}
} else {
//not in string
if(!quote_opened){
//If it is not in the comment
if(!slash_slash_comment_opened && !slash_star_comment_opened){
htmlTxt[htmlTxt.length] = codeArr[i];
//Commenting
}else{
if(!this._deleteComment){
htmlTxt[htmlTxt.length] = codeArr[i];
}
}
}else{
htmlTxt[htmlTxt.length] = codeArr[i];
}
}
}
return htmlTxt.join("");
}
this.isStartWith = function(str,code,index){
if(typeof(str)!="undefined"&&str.length>0){
var cc = new Array();
for(var i=index;i<index+str.length;i++){
cc[cc.length] = code[i];
}
var c = cc.join("");
if(this._caseSensitive){
if(str.length>=code[index].length&&c.indexOf(str)==0){
return true;
}
}else{
if(str.length>=code[index].length&&c.toLowerCase().indexOf(str.toLowerCase())==0){
return true;
}
}
return false;
} else {
return false;
}
}
this.isFunction = function(val){
return this._function.contains(this._caseSensitive?val:val.toLowerCase());
}
this.isBlockElement = function(val) {
return this._blockElement.contains(this._caseSensitive?val:val.toLowerCase());
}
this.isChoiceElement = function(val) {
return this._choiceElement.contains(this._caseSensitive?val:val.toLowerCase());
}
this.isSingleEyeElement = function(val) {
return this._singleEyeElement.contains(this._caseSensitive?val:val.toLowerCase());
}
this.isNextElement = function(from,word){
for(var i=from;i<word.length;i++){
if(word[i]!=" "&&word[i]!="t"&&word[i]!="r"&&word[i]!="n"){
return this.isChoiceElement(word[i]);
}
}
return false;
}
this.getSkipLength = function(val){
var count = 0;
for(var i=0;i<val.length;i++){
if(this._wordDelimiters.indexOf(val.charAt(i))>=0){
count++;
}
}
if(count>0){
count=count-1;
}
return count;
}
this.getIdent=function(){
var n = [];
for(var i=0;i<this._tabNum;i++){
n[n.length] = "t";
}
return n.join("");
}
}
function doformat(o){
var htmltxt = "";
if (o == null){
alert("domNode is null!");
return;
}
var _codetxt = "";
if(typeof(o)=="object"){
switch(o.tagName){
case "TEXTAREA":
case "INPUT":
_codetxt = o.value;
break;
case "DIV":
case "SPAN":
_codetxt = o.innerText;
break;
default:
_codetxt = o.innerHTML;
break;
}
}else{
_codetxt = o;
}
var _syn = new CLASS_FORMAT(_codetxt);
htmltxt = _syn.format();
return htmltxt;
}
function go()
{
var code = document.getElementById("code").value;
var xx = new CLASS_FORMAT(code);
var a = new Date();
if(document.getElementById('cboOperate').selectedIndex==1){
xx.isCompress=true;
}else{
xx.style = parseInt(document.getElementById('cboStyle').value);
}
document.getElementById("display").value = xx.format();
alert("Total flowers:" + (new Date().getTime()-a.getTime()) + "ms");
}
//-->
</SCRIPT>
<TEXTAREA id=code rows=12 cols=100>
/*
This is a class
*/
function xx (num,str){//Description
var a = num;this.aa = a;
this.bb = function(){alert(str);}
this.cc = function(){for(var i=0;i<10;i++){document.title=i;}}};
xx.prototype.dd= function(){alert("d d kd"); }
var a = new xx(100,"hello"),b=new xx(0,"ttyp");
if(1>2) { alert();
}
else {
alert(" hell ");
}
a.bb();
b.dd();
alert(a.aa);
</TEXTAREA> <BR>
<select id="cboOperate" onchange="if(this.selectedIndex==1)document.getElementById('cboStyle').disabled=true;else document.getElementById('cboStyle').disabled=false;">
<option value="0">Format</option>
<option value="1">Compression</option>
</select>
<select id="cboStyle">
<option value="0">Classic</option>
<option value="1">Microsoft</option>
</select>
<INPUT onclick=go() type=button value=go><br>
<textarea id=display rows=12 cols=100>
</textarea>
</BODY></HTML>