Javascriptminifier C # compressed JavaScript

Using system;using system.collections.generic;using system.linq;using system.web;using System.Text;using System.IO;/ &LT;SUMMARY&GT;///provides the ability to compress JavaScript code.    </summary>public sealed class javascriptminifier{#region private field-Const int EOF =-1;    Private ReadOnly StringBuilder _jsbuilder;    Private ReadOnly TextReader _jsreader;    private int _thea = Convert.ToInt32 (' \ n ');    private int _theb;    private int _thelookahead = EOF;    #endregion #region Constructors///<summary>//Initializes a new instance of the <see cref= "Javascriptminifier"/> class. </summary>//<param name= "Jsreader" > contains <see cref= "TextReader"/> to compress JavaScript code. </param> Private Javascriptminifier (TextReader jsreader) {if (Jsreader = = null) throw new Argumentnull        Exception ("Jsreader");        This._jsreader = Jsreader;    This._jsbuilder = new StringBuilder ();    } #endregion #region static method///<summary>//compress the specified JavaScript code. ///</summary>//<param name= "JS" > contains <see cref= "StringBuilder"/> To compress the JavaScript code. </param>///<returns> returns the <see cref= "StringBuilder"/> that contains the compressed JavaScript code. </returns> public static StringBuilder minify (StringBuilder js) {return minify (new StringReader (JS. ToString ()));    }//<summary>//compress the specified JavaScript code. </summary>//<param name= "Jscode" > JavaScript code to compress. </param>///<returns> returns the <see cref= "StringBuilder"/> that contains the compressed JavaScript code.    </returns> public static StringBuilder minify (string jscode) {return minify (new StringReader (Jscode));}    <summary>///compress the specified JavaScript code. </summary>//<param name= "Jsreader" > contains <see cref= "TextReader"/> to compress JavaScript code. </param>///<returns> returns the <see cref= "StringBuilder"/> that contains the compressed JavaScript code. </returns> public static StringBuilder minify (TextReader jsreader) {        Javascriptminifier jsmin = new Javascriptminifier (Jsreader);        Jsmin._jsmin ();    return jsmin._jsbuilder;        } #endregion The private method is #region privately void _jsmin () {this._action (3);                    while (This._thea! = EOF) {switch (Char) this._thea) {case ':                    if (_isalphanum (This._theb)) this._action (1);                    else This._action (2);                Break                        Case ' \ n ': Switch ((Char) this._theb) {case ' {':                            Case ' [': Case ' (': Case ' + ': Case '-':                            This._action (1);                        Break                            Case ': this._action (3);                        Break Default:if (_isalphanum (This._theb)) this. _action (1);                            else This._action (2);                    Break                } break;                            Default:switch ((Char) this._theb) {case ':                                if (_isalphanum (This._thea)) {this._action (1);                            Break                            } this._action (3);                        Break                                Case ' \ n ': Switch ((Char) This._thea) {                                Case '} ': Case '] ': Case ') ':                                Case ' + ': Case '-': Case ' "': Case ' \ ': this._action (1);                                   Break                                    Default:if (_isalphanum (This._thea)) this._action (1);                                    else This._action (3);                            Break                        } break;                            Default:this._action (1);                    Break            } break;        }}} private void _action (int d) {if (d <= 1) this._put (This._thea);            if (d <= 2) {This._thea = This._theb;                if (This._thea = = ' \ ' | | this._thea = = ' "') {for (;;)                    {this._put (This._thea);                    This._thea = This._get ();                    if (This._thea = = This._theb) break; if (This._thea <= ' \ n ') throw the new Exception (string. Format ("Error:Jsmin unterminated string literal: {0} ", This._thea));                    if (this._thea! = ' \ \ ') continue;                    This._put (This._thea);                This._thea = This._get ();        }}} if (D > 3) return;        This._theb = This._next (); if (This._theb! = '/' | | mp;& This._thea! = '! ') && This._thea! = ': ') && This._thea! = ' & ') && this._thea! = ' | ') && This._thea! = '? ') && This._thea! = ' {') && This._thea! = '} ') && this._thea! = '; ')        && This._thea! = ' \ n ')) return;        This._put (This._thea);        This._put (This._theb);        for (;;)            {This._thea = This._get ();            if (This._thea = = '/') break;                if (This._thea = = ' \ \ ') {this._put (This._thea); THis._thea = This._get (); } else if (This._thea <= ' \ n ') throw the new Exception (string.            Format ("Error:jsmin unterminated Regular Expression literal: {0}.", This._thea));        This._put (This._thea);    } This._theb = This._next ();        } private int _next () {int c = this._get ();        const int s = (int) ' * ';  if (c = = '/') {switch (Char) This._peek ()) {case '/': for                    (; ; )                        {c = This._get ();                    if (c <= ' \ n ') return C;                    } case ' * ': This._get ();                    for (;;)                                {switch (This._get ()) {case S:                     if (this._peek () = = '/') {this._get ();               Return Convert.ToInt32 (");                            } break;                        Case Eof:throw New Exception ("Error:jsmin unterminated comment.");            }} Default:return C;    }} return C;        } private int _peek () {this._thelookahead = This._get ();    return this._thelookahead;        } private int _get () {int c = this._thelookahead;        This._thelookahead = EOF;        if (c = = EOF) c = This._jsreader.read (); return c >= ' | | c = = ' \ n ' | | c = = EOF? C: (c = = ' \ r ')?    ' \ n ': ');    } private void _put (int c) {this._jsbuilder.append ((char) c);} private static bool _isalphanum (int c) {return ((c >= ' a ' && c <= ' z ') | | (c >= ' 0 ' && C <= ' 9 ') | | (c >= ' A ' && C <= ' Z ') | | c = = ' _ ' | | c = = ' $ ' | | c = = ' \ \ ' | | C> 126); } #endregion}

Javascriptminifier

Javascriptminifier C # compressed JavaScript