Where do I get the cscript.exe ?
> -----Mensaje original-----
> De: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]En nombre de Richard
> Bennett
> Enviado el: mi�rcoles, 09 de mayo de 2001 11:11
> Para: [EMAIL PROTECTED]
> Asunto: Re: [Dynapi-Dev] OT: Scriptcompressing
>
>
> Hi,
> thanks for sharing that.
> I gave it a test run, and got these results:
> original file: File size 35kb well commented code.
> crunch level 1= 27 kb, code still readable.
> crunch level 2= 25 kb, code still readable.
> crunch level 3= 25 kb, code wrapped.
> crunch level 4= 23 kb, code wrapped.
> crunch level 4= 22 kb, variable substitution, code wrapped.
>
> At crunch level 2 the code was still readable, and functional, so
> for my use
> that looks like the best setting.
> Comment removal worked very well, even nested comments etc.
>
> Regarding variable substitution, I would actually prefer to be able to
> specify in a list which variables I would like to substitute with what,
> rather than specifying which ones NOT to change.
>
> For those having trouble running the code, you can also paste it in a .bat
> file, saves typing :o)
> I made a file crunch.bat , and in it put:
>
> cscript.exe ESC.wsf -l 2 -o newFile.js OriginalFile.js
>
> It's definitely a tool that would allow us to comment the DynAPI code more
> fully.
>
> There's an error in line 42 of the readme file , level 1 doesn't do empty
> line removal.
>
> Cheers,
> Richard Bennett
>
> [EMAIL PROTECTED]
> www.richardinfo.com
> (Everything running on, and ported to DynAPI2.51)
> visit the DynAPI homepage (and FAQ) ::
> http://dynapi.sourceforge.net/dynapi/index.php?menu=1
> Browse (and search) the mailinglist here:
> http://www.mail-archive.com/index.php3?hunt=dynapi
>
>
>
> ----- Original Message -----
> From: "thomas@jet" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Wednesday, May 09, 2001 4:09 AM
> Subject: [Dynapi-Dev] OT: Scriptcompressing
>
>
> Hi all.
>
> I am normally a lurker on this list cuz I like some of the topics raised
> here once in while dealing
> with more complex javascript concepts like memory handling, prototype
> techniques etc.
>
> Anyways, there was a thread here a while ago about compressing scripts for
> boosting download performance,
> and I thought some of you might be interested in checking out
> this tool I've
> put together for this purpose.
> The tool is JScript-class wrapped in a command line interface for
> use under
> WSH (Windows Scripting Host).
>
> Story:
> We are building a unihost ECMA scripting API overhere and we
> wanted to have
> the ability to create optimized
> script-packets out from various external javascript-classes depending on
> purpose. Kindof like a 'compilation' phase.
> Since there was no such tool available/good enough we made our own, namely
> ESC. (ECMAscript Cruncher).
>
> While at it, we decided to bring compression a step further than just to
> remove whitespace, so I added a
> 'variable-substitution' engine to kill off even more bytes. To
> describe this
> simple I'd better say obfuscation,
> eventhough this is only the bi-product of the result, the issue here is
> lesser chars. This mode is a bit tricky
> to get accustomed to at first, since it may crack your script.
> But once one
> understand how it operates, this
> thing really rocks cuz it'll save another 5-10% sizewise.(depending on the
> src)
>
> The ESC-class gives the opportunity to have a developer version of a
> module/class/script with really descriptional
> variable- names / method names, commented allover. This dev version of the
> script can at any point be 'compiled'
> to an optimized chunk for productional use.
>
>
> ESC has the ability to compress one or multiple external scripts and pack
> them together in a single file.
> There are four levels of compressions as of now whereas:
> 0 : none
> 1 : Empty line, single and Multiline comment removal. (with JScript
> conditional compilation awareness)
> 2 : Removal of whitespace ( string and regexp aware)
> 3 : Newline removal (with automatic
> 'often-forgotten-function-compound-seperator' (;) insertion)
> 4 : Enable variable substitution engine. (keyword, statement and window
> top-level prop/methods aware)
> !!! The var-subst engine can be used sepatately by using a special cmdline
> switch, so it can also be applied at crunch-level : 0.
>
> ESC needs Win32 with WSH 2.0 and JScript 5.5 installed to score, since it
> hevealy relies on new features
> in JScript 5.5's RegExp engine. If are running Win 98SE, ME or
> 2k with MSIE
> 5.5 installed you should
> have the means to run ESC out of the box. Otherwize, the necessary upgrade
> of WSH / JScript package
> can be obtained from microsoft's (ca. 630 kB) (link provided in the readme
> file)
>
> --
> ok, enough blabbering, it's freeware so try it out if you like.
> (...and tell
> me if you have found another script-compressor
> that can handle a simple thing as 'return -1' :) )
> its for ECMAscript developers � la advanced, so I figure this list is a
> good place to point this tool to get it tested/evaluated ;)
> Any comments, problems, suggestions or bugreports are welcome.
> /thomas.
>
>
>
> Thomas Loo / Saltstorm.
> [EMAIL PROTECTED]
> ------------------------------------------------------
>
>
>
>
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