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一些Javascript Compress Tool
Javascript/js/Jscript 压缩 | 打包 | compress | pack
jsmin
|
JsMinGUI
JSMin(C# code)
using
System;
using
System.IO;
/**/
/*
Originally written in 'C', this code has been converted to the C# language.
* The author's copyright message is reproduced below.
* All modifications from the original to C# are placed in the public domain.
*/
/**/
/*
jsmin.c
2007-01-08
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.
*/
namespace
JavaScriptSupport
{
class
JavaScriptMinifier
{
const
int
EOF
=
-
1
;
StreamReader sr;
StreamWriter sw;
int
theA;
int
theB;
int
theLookahead
=
EOF;
static
void
Main(
string
[] args )
{
if
( args.Length
!=
2
)
{
Console.WriteLine(
"
invalid arguments, 2 required, 1 in, 1 out
"
);
return
;
}
new
JavaScriptMinifier().Minify( args[
0
], args[
1
] );
}
public
void
Minify(
string
src,
string
dst )
{
using
( sr
=
new
StreamReader( src ) )
{
using
( sw
=
new
StreamWriter( dst ) )
{
jsmin();
}
}
}
/**/
/*
jsmin -- Copy the input to the output, deleting the characters which are
insignificant to JavaScript. Comments will be removed. Tabs will be
replaced with spaces. Carriage returns will be replaced with linefeeds.
Most spaces and linefeeds will be removed.
*/
void
jsmin()
{
theA
=
'
\n
'
;
action(
3
);
while
( theA
!=
EOF )
{
switch
( theA )
{
case
'
'
:
{
if
( isAlphanum( theB ) )
{
action(
1
);
}
else
{
action(
2
);
}
break
;
}
case
'
\n
'
:
{
switch
( theB )
{
case
'
{
'
:
case
'
[
'
:
case
'
(
'
:
case
'
+
'
:
case
'
-
'
:
{
action(
1
);
break
;
}
case
'
'
:
{
action(
3
);
break
;
}
default
:
{
if
( isAlphanum( theB ) )
{
action(
1
);
}
else
{
action(
2
);
}
break
;
}
}
break
;
}
default
:
{
switch
( theB )
{
case
'
'
:
{
if
( isAlphanum( theA ) )
{
action(
1
);
break
;
}
action(
3
);
break
;
}
case
'
\n
'
:
{
switch
( theA )
{
case
'
}
'
:
case
'
]
'
:
case
'
)
'
:
case
'
+
'
:
case
'
-
'
:
case
'
"
'
:
case
'
\
''
:
{
action(
1
);
break
;
}
default
:
{
if
( isAlphanum( theA ) )
{
action(
1
);
}
else
{
action(
3
);
}
break
;
}
}
break
;
}
default
:
{
action(
1
);
break
;
}
}
break
;
}
}
}
}
/**/
/*
action -- do something! What you do is determined by the argument:
1 Output A. Copy B to A. Get the next B.
2 Copy B to A. Get the next B. (Delete A).
3 Get the next B. (Delete B).
action treats a string as a single character. Wow!
action recognizes a regular expression if it is preceded by ( or , or =.
*/
void
action(
int
d )
{
if
( d
<=
1
)
{
put( theA );
}
if
( d
<=
2
)
{
theA
=
theB;
if
( theA
==
'
\
''
|| theA ==
'"
' )
{
for
( ; ; )
{
put( theA );
theA
=
get
();
if
( theA
==
theB )
{
break
;
}
if
( theA
<=
'
\n
'
)
{
throw
new
Exception(
string
.Format(
"
Error: JSMIN unterminated string literal: {0}\n
"
, theA ) );
}
if
( theA
==
'
\\
'
)
{
put( theA );
theA
=
get
();
}
}
}
}
if
( d
<=
3
)
{
theB
=
next();
if
( theB
==
'
/
'
&&
(theA
==
'
(
'
||
theA
==
'
,
'
||
theA
==
'
=
'
||
theA
==
'
[
'
||
theA
==
'
!
'
||
theA
==
'
:
'
||
theA
==
'
&
'
||
theA
==
'
|
'
||
theA
==
'
?
'
) )
{
put( theA );
put( theB );
for
( ; ; )
{
theA
=
get
();
if
( theA
==
'
/
'
)
{
break
;
}
else
if
( theA
==
'
\\
'
)
{
put( theA );
theA
=
get
();
}
else
if
( theA
<=
'
\n
'
)