CFLib.org – Common Function Library Project

Description:
This UDF compresses javascript code removing line comments, block comments, spaces, tabs and line feeds.

Return Values:
Returns a string.

Example:

<cfsavecontent variable="str">
   // line commet 0
   text0=0;
   //line comment 1
   /**
   block comment 1
   ****/
   text1=1;
   /* ****
   block comment 2
   */
   text2=2;    // line comment 2
   // line comment 3
   /**********************************
   block comment 3
   *************************************/
   text3=3;
</cfsavecontent>
RESULT:"<cfoutput>#JSCompressor(str)#</cfoutput>"

RESULT:"text0=0;text1=1;text2=2;text3=3;"

Parameters:

Full UDF Source:

<!---
 Compresses javascript code
 
 @param JScode      javascript code to compress (Required)
 @param bRem      Boolean flag to remove block comments (Optional)
 @return Returns a string. 
 @author Jose Alberto Guerra (cheveguerra@gmail.com) 
 @version 1, March 25, 2010 
--->
<cffunction name="jsCompressor" returntype="string" description="Compresses javascript code" output="false">
    <cfargument name="jscode" type="string" required="yes">
    <cfargument name="brem" type="boolean" required="no" default="true">
    <cfargument name="lrem" type="boolean" required="no" default="true">
    <cfargument name="spc" type="boolean" required="no" default="true">
    <cfargument name="ret" type="boolean" required="no" default="true">
    <cfset var linerem= "[^:]\/\/[^#chr(13)##chr(10)#]*">
    <cfset var blockrem1="/\*">
    <cfset var blockrem2="\*/">
    <cfset var blockrem="#chr(172)#[^#chr(172)#]*#chr(172)#">
    <cfset var spaces="[\s]*([\=|\{|\}|\(|\)|\;|[|\]|\+|\-|\n|\r]+)[\s]*">
    <cfset var retornos="[\r\n\f]*">
    <cfif brem>
        <cfset jscode = rereplacenocase(jscode,blockrem1,"#chr(172)#","all")>
        <cfset jscode = rereplacenocase(jscode,blockrem2,"#chr(172)#","all")>
        <cfset jscode = rereplacenocase(jscode,blockrem,"","all")>
    </cfif>
    <cfif lrem><cfset jscode = rereplacenocase(jscode,linerem,"","all")></cfif>
    <cfif spc><cfset jscode = rereplacenocase(jscode,spaces,"\1","all")></cfif>
    <cfif ret><cfset jscode = rereplacenocase(jscode,retornos,"","all")></cfif>
    <cfreturn jscode>
</cffunction>