/**
* MyMin - JSMin and packer like alternative parser for both JavaScript and CSS
*
* This class is a jsmin alternative, based on same parser logic but modified
* to mantain performances and to parse correctly JavaScript conditional comments too.
* This file contains another class too, called MyMinCompressor, based on
* personal fast and strongly compatible decompression method, inspired by
* Dean Edwards packer logic ( http://dean.edwards.name/packer/ )
* but compatible with every kind of source code.
*
* CLIENT SIDE
* Internet Explorer <= 5 requires a correct String.prototype.replace
* implementation (http://www.3site.eu/replace.js) to decode compressed source.
* This code is compatible with every JavaScript compatible browser.
*
* SERVER SIDE
* .NET 2.0 or greater is required.
* The best practice to use this code is caching results without run-time
* evaluation (your server should be stressed too much with big files)
*
* Permission is hereby granted to use this version of the library under the
* same terms as jsmin.php, which has the following license:
*
* --
* Copyright (c) 2002 Douglas Crockford (www.crockford.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* The Software shall be used for Good, not Evil.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* --
*
* @class MyMin
* MyMinCompressor
* MyMinException
* @author Andrea Giammarchi <http://www.3site.eu>
* @copyright 2002 Douglas Crockford <douglas@crockford.com> (jsmin.c)
* @copyright 2007 Ryan Grove <ryan@wonko.com> (PHP port)
* @copyright 2007 Andrea Giammarchi (improvements + MyMinCompressor + MyMinCSS)
* @license http://opensource.org/licenses/mit-license.php MIT License
* @version 1.0.1 (2007-10-05)
*/
namespace util
{
class MyMin
{
#region public constants
public const System.Char LF = '\n', SPACE = ' ', EOS = System.Char.MinValue;
#endregion
#region protected variables
protected System.Boolean cc_on;
protected System.Char a, ahead, b;
protected System.Int32 index = 0, length;
protected System.String input;
protected System.Text.StringBuilder output = new System.Text.StringBuilder();
#endregion
#region static public methods
static public System.String parse(System.String input)
{
return MyMin.parse(input, true);
}
static public System.String parse(System.String input, System.Boolean cc_on)
{
return new MyMin(input, cc_on).ToString();
}
static public System.String parse(System.String input, System.Boolean cc_on, System.Boolean css)
{
return css ? new MyMinCSS(input, cc_on).ToString() : new MyMin(input, cc_on).ToString();
}
#endregion
#region constructor
public MyMin(System.String input)
{
this.init(input, true);
}
public MyMin(System.String input, System.Boolean cc_on)
{
this.init(input, cc_on);
}
#endregion
#region public override methods
public override System.String ToString()
{
return this.output.ToString().TrimStart().Replace("\n\n", "\n");
}
public static implicit operator System.String(MyMin o)
{
return o.ToString();
}
#endregion
#region virtual protected methods
virtual protected void action(System.Int32 i)
{
if (i < 2)
this.output.Append(this.a);
if (i < 3)
{
this.a = this.b;
if (this.a == '\'' || this.a == '"')
{
while (true)
{
this.output.Append(this.a);
if (!this.nextCharNoSlash(this.b, "Unterminated string literal."))
break;
}
}
}
if (i < 4)
{
this.b = this.next();
if (this.b == '/')
{
switch (this.a)
{
case MyMin.LF:
case MyMin.SPACE:
case '{':
case ';':
case '(':
case ',':
case '=':
case ':':
case '[':
case '!':
case '&':
case '|':
case '?':
if ((MyMin.LF == this.a || MyMin.SPACE == this.a) && !this.spaceBeforeRegExp(this.output.ToString()))
break;
this.output.Append(this.a);
this.output.Append(this.b);
while (this.nextCharNoSlash('/', "Unterminated regular expression literal."))
this.output.Append(this.a);
this.b = this.next();
break;
}
}
}
}
virtual protected void appendComment(System.Int32 pos, System.String open, System.String close)
{
this.output.Append(this.a);
this.output.Append(open);
this.output.Append(new MyMin(this.input.Substring(this.index, pos - this.index), this.cc_on));
this.output.Append(close);
this.index = pos;
this.a = MyMin.LF;
}
virtual protected void conditionalComment(System.Char find)
{
System.Int32 pos = this.input.IndexOf(find, this.index);
if (pos < 0)
pos = this.length;
this.appendComment(pos, "//", find.ToString());
}
virtual protected void conditionalComment(System.String find)
{
System.Int32 pos = this.input.IndexOf(find, this.index);
if (pos < 0)
throw new MyMinException("Unterminated comment.");
this.appendComment(pos, "/*", find);
}
virtual protected System.Char get()
{
System.Char c = this.ahead;
this.ahead = MyMin.EOS;
if (c == MyMin.EOS && this.index < this.length)
c = this.input[this.index++];
return (c == MyMin.EOS || c == MyMin.LF || c >= MyMin.SPACE) ? c : MyMin.SPACE;
}
virtual protected void init(System.String input, System.Boolean cc_on)
{
this.input = System.Text.RegularExpressions.Regex.Replace(input.Trim(), "(\n\r|\r\n|\r|\n)+", MyMin.LF.ToString());
this.length = this.input.Length;
this.cc_on = cc_on;
this.a = MyMin.LF;
this.action(3);
while (this.a != MyMin.EOS)
{
switch (this.a)
{
case MyMin.SPACE:
this.action(this.isAlNum(this.b) ? 1 : 2);
break;
case MyMin.LF:
switch (this.b)
{
case '{':
case '[':
case '(':
case '+':
case '-':
this.action(1);
break;
case MyMin.SPACE:
this.action(3);
break;
default:
this.action(this.isAlNum(this.b) ? 1 : 2);
break;
}
break;
default:
switch (this.b)
{
case MyMin.SPACE:
this.action(this.isAlNum(this.a) ? 1 : 3);
break;
case MyMin.LF:
switch (this.a)
{
case '}':
case ']':
case ')':
case '+':
case '-':
case '"':
case '\'':
this.action(1);
break;
default:
this.action(this.isAlNum(this.a) ? 1 : 3);
break;
}
break;
default:
this.action(1);
break;
}
break;
}
}
}
virtual protected System.Boolean isAlNum(System.Char c)
{
return c > 126 || c == '\\' || System.Text.RegularExpressions.Regex.IsMatch(c.ToString(), "^(\\w|\\$)$");
}
virtual protected System.Char next()
{
System.Char c = this.get();
System.Boolean loop = true;
if (c == '/')
{
switch (this.ahead = this.get())
{
case '/':
if (this.cc_on && this.input[this.index] == '@')
this.conditionalComment(MyMin.LF);
while (loop)
{
c = this.get();
if (c <= MyMin.LF)
loop = false;
}
break;
case '*':
this.get();
if (this.cc_on && this.input[this.index] == '@')
this.conditionalComment("*/");
while (loop)
{
switch (this.get())
{
case '*':
if ((this.ahead = this.get()) == '/')
{
this.get();
c = MyMin.SPACE;
loop = false;
}
break;
case MyMin.EOS:
throw new MyMinException("Unterminated comment.");
}
}
break;
}
}
return c;
}
virtual protected System.Boolean nextCharNoSlash(System.Char c, System.String message)
{
System.Boolean loop = true;
this.a = this.get();
if (this.a == c)
loop = false;
else
{
if (this.a == '\\')
{
this.output.Append(this.a);
this.a = this.get();
}
if (this.a <= MyMin.LF)
throw new MyMinException(message);
}
return loop;
}
virtual protected System.Boolean spaceBeforeRegExp(System.String output)
{
System.Int32 i, length = output.Length;
System.Boolean result = false;
System.String tmp;
System.String[] reserved = "case.else.in.return.typeof".Split('.');
for (i = 0; i < 5 && !result; i++)
{
if (length == reserved[i].Length)
result = reserved[i] == output;
else if (length > reserved[i].Length)
{
tmp = output.Substring(length - reserved[i].Length - 1);
result = tmp.Substring(1) == reserved[i] && !this.isAlNum(tmp[0]);
}
}
return length < 2 ? true : result;
}
#endregion
}
class MyMinCompressor
{
#region protected variables
protected System.Int32 baseLength = 0;
protected System.String baseString = "0123456789abcdefghijklmnopqrstuvwxyz";
protected System.Collections.Generic.Dictionary<System.String, System.Int32> dict;
protected System.Collections.Generic.Dictionary<System.String, System.String>[] list;
protected System.String[] keywords;
#endregion
#region constructor
public MyMinCompressor()
{
this.init(36);
}
public MyMinCompressor(System.Int32 baseLength)
{
this.init(baseLength);
}
#endregion
#region public methods
public System.String getCSSMachine(System.String css)
{
return this.getCSSMachine(css, System.String.Empty);
}
public System.String getCSSMachine(System.String css, System.String media)
{
System.Text.StringBuilder result = new System.Text.StringBuilder();
result.Append("(function(M,y,m,i,n,C,S,s){if(m[n]){S=m.styleSheets;s=m.createElement(\"style\");s.type=\"text/css\";s.media=C||\"all\";M=M.replace(/\\w+/g,function(m){return y[parseInt(m,");
result.Append(this.baseLength);
result.Append(")]});m[n](\"head\")[0][i](s);/*@cc_on if(!(S[S.length-1].cssText=M))@*/s[i](m.createTextNode(M));m.write('<link hide=\"')}})('");
result.Append(this.parse(css));
result.Append("','");
result.Append(System.String.Join(".", this.keywords));
result.Append("'.split('.'),document,'appendChild','getElementsByTagName'");
result.Append(media != System.String.Empty ? ",'" + media + "'" : "");
result.Append(')');
return result.ToString();
}
public System.String getJSMachine(System.String js)
{
System.Text.StringBuilder result = new System.Text.StringBuilder();
result.Append("eval((function(M){return '");
result.Append(this.parse(js));
result.Append("'.replace(/\\w+/g,function(m){return M[parseInt(m,");
result.Append(this.baseLength);
result.Append(")]})})('");
result.Append(System.String.Join(".", this.keywords));
result.Append("'.split('.')))");
return result.ToString();
}
public System.String getMachine(System.String js, System.String css)
{
return this.getMachine(js, css, System.String.Empty);
}
public System.String getMachine(System.String js, System.String css, System.String media)
{
System.Text.StringBuilder result = new System.Text.StringBuilder();
System.String[] source;
result.Append(js);
result.Append(MyMin.EOS);
result.Append(css);
source = this.parse(result.ToString()).Split(MyMin.EOS);
result = new System.Text.StringBuilder();
result.Append("eval((function(M,y,m,i,n,C,S,s){if(m[n]){S=m.styleSheets;s=m.createElement(\"style\");s.type=\"text/css\";s.media=C||\"all\";C=M('");
result.Append(source[1]);
result.Append("',y);m[n](\"head\")[0][i](s);/*@cc_on if(!(S[S.length-1].cssText=C))@*/s[i](m.createTextNode(C));m.write('<link hide=\"')}return s?M('");
result.Append(source[0]);
result.Append("',y):\"\"})(function(s,l){return s.replace(/\\w+/g,function(m){return l[parseInt(m,");
result.Append(this.baseLength);
result.Append(")]})},'");
result.Append(System.String.Join(".", this.keywords));
result.Append("'.split('.'),document,'appendChild','getElementsByTagName'");
result.Append(media != System.String.Empty ? ",'" + media + "'" : "");
result.Append("))");
return result.ToString();
}
#endregion
#region virtual protected methods
virtual protected System.String convertToBase(System.Int32 num)
{
System.Int32 module = 0;
System.String result = "";
while (num > 0)
{
result = this.baseString[(module = num % this.baseLength)].ToString() + result;
num = (System.Int32)((num - module) / this.baseLength);
}
return result != "" ? result : this.baseString[0].ToString();
}
virtual protected System.String countMatches(System.Text.RegularExpressions.Match m)
{
if (!this.dict.ContainsKey(m.Value))
this.dict.Add(m.Value, 0);
this.dict[m.Value]++;
return System.String.Empty;
}
virtual protected void init(System.Int32 baseLength)
{
this.baseLength = baseLength;
this.baseString = this.baseString.Substring(0, baseLength);
}
virtual protected System.String parse(System.String source)
{
System.Int32 i = 0;
System.Collections.Generic.Dictionary<System.String, System.String> tmp;
this.dict = new System.Collections.Generic.Dictionary<System.String, System.Int32>();
source = source.Replace("\\", "\\\\").Replace("'", "\\'");
new System.Text.RegularExpressions.Regex(@"\w+").Replace(source, new System.Text.RegularExpressions.MatchEvaluator(this.countMatches));
this.list = new System.Collections.Generic.Dictionary<System.String, System.String>[this.dict.Keys.Count];
foreach (System.String key in this.dict.Keys)
{
tmp = new System.Collections.Generic.Dictionary<System.String, System.String>();
tmp.Add("match", key);
tmp.Add("count", this.dict[key].ToString());
this.list[i++] = tmp;
}
this.sort();
this.keywords = new System.String[i = this.list.Length];
while (i-- > 0)
{
tmp = this.list[i];
this.dict[this.keywords[i] = tmp["match"]] = i;
}
source = new System.Text.RegularExpressions.Regex(@"\w+").Replace(source, new System.Text.RegularExpressions.MatchEvaluator(this.replaceMatches));
source = new System.Text.RegularExpressions.Regex("(\r\n|\n\r|\n|\r)+").Replace(source, "\\n");
return source;
}
virtual protected System.String replaceMatches(System.Text.RegularExpressions.Match m)
{
return this.convertToBase(this.dict[m.Value]);
}
virtual protected void sort()
{
System.Boolean sorted = false;
System.Collections.Generic.Dictionary<System.String, System.String> tmp;
for (System.Int32 i = 1, j = this.list.Length; i < j; i++)
{
if (this.sortKeywords(this.list[i - 1], this.list[i]))
{
sorted = true;
tmp = this.list[i];
this.list[i] = this.list[i - 1];
this.list[i - 1] = tmp;
i = i > 2 ? i - 2 : 0;
}
}
if (sorted)
this.sort();
}
virtual protected System.Boolean sortKeywords(
System.Collections.Generic.Dictionary<System.String, System.String> a,
System.Collections.Generic.Dictionary<System.String, System.String> b
)
{
System.Int32 ac = System.Convert.ToInt32(a["count"]), bc = System.Convert.ToInt32(b["count"]);
return (ac < bc) || (ac == bc && a["match"].Length < b["match"].Length);
}
#endregion
}
class MyMinCSS
{
#region protected variables
protected System.String output;
#endregion
#region constructor
public MyMinCSS(System.String input)
{
this.output = this.init(input, true);
}
public MyMinCSS(System.String input, System.Boolean cc_on)
{
this.output = this.init(input, cc_on);
}
#endregion
#region public override methods
public override System.String ToString()
{
return this.output.ToString().TrimEnd();
}
public static implicit operator System.String(MyMinCSS o)
{
return o.ToString();
}
#endregion
#region virtual protected methods
virtual protected System.Boolean action(System.Char c)
{
System.Boolean r = true;
switch (c)
{
case '}':
case '{':
case ';':
case ',':
case ':':
r = false;
break;
}
return r;
}
virtual protected System.String init(System.String input, System.Boolean cc_on)
{
System.Char c;
System.Text.StringBuilder output = new System.Text.StringBuilder();
input = System.Text.RegularExpressions.Regex.Replace(input.Trim(), "(\\s)+", MyMin.SPACE.ToString());
for (System.Int32 i = 0, l = input.Length; i < l; i++)
{
c = input[i];
switch (c)
{
case MyMin.SPACE:
if (++i < l)
{
if (this.action(input[i]))
{
if (-1 < (i - 2))
{
if (this.action(input[i - 2]))
output.Append(c);
}
else
output.Append(c);
};
--i;
};
break;
case '/':
if (++i < l)
{
c = input[i];
if (c == '*')
{
if (++i < l)
{
l = input.IndexOf("*/", i);
if (-1 < l)
{
i = l + 2;
l = input.Length;
if (i < l)
{
--i;
input = System.String.Format("{0};{1}", input.Substring(0, i), input.Substring(i + 1));
}
}
else
throw new MyMinException("Unterminated comment.");
}
else
throw new MyMinException("Unterminated comment.");
}
else
output.Append(input[--i]);
};
break;
default:
output.Append(c);
break;
}
}
return output.ToString().TrimEnd();
}
#endregion
}
class MyMinException : System.Exception
{
#region constructor
public MyMinException(System.String message) : base(message) { }
#endregion
}
}
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