Practical Programming

I am excited to announce that the programmers.org ColdFusion UDF Extension Library is now freely available.

Part of being a good developer is the act of working smarter and not harder. And there is no better way to accomplish this than through code reuse. Adding your own Extension Library to ColdFusion is a direct and powerful way to increase the speed and consistency of your development.

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I cobbled together a few functions you may find useful this morning. As you can see they are simple, albeit useful, and so I wanted to share them here. Enjoy, and keep on coding!

/*
FUNCTION:   ArrayFindString
PURPOSE:    Searches inside the specified array (array_obj)
              for a string matching string (str)
PARAMETERS: 1. array_obj: the array containing the strings you
                 want to try to match to str
            2. str: the string you will be looking for in array_obj
RETURNS:    boolean
NOTE:       not case sensitive
*/
function ArrayFindString(array_obj, str){
var i = 1;

for (i = 1; i lte arrayLen(array_obj); i = i + 1)
if (array_obj[i] eq str) return true;

return false;
}

/*
FUNCTION: 	ArrayContainsString
PURPOSE: 	Searches inside the specified array (array_obj) for a
                  string that contains the string (str)
PARAMETERS: 	1. array_obj: the array containing the strings you want
                     to try to match to str
                2. str: the string you will be looking for in array_obj
RETURNS: 	boolean
NOTE: 		not case sensitive
*/
function ArrayContainsString(array_obj, str){
var i = 1;

for (i = 1; i lte arrayLen(array_obj); i = i + 1)
if (findNoCase(str, array_obj[i])) return true;

return false;
}

/*
FUNCTION: 	StringSearchArray
PURPOSE: 	Searches inside the specified string (str) for any
string matches contained in the array (array_obj)
PARAMETERS: 	1. str: the string you will be searching inside of
                2. array_obj: the array containing the strings you want
                     to look for in str
RETURNS: 	boolean
NOTE: 		not case sensitive
*/
function StringSearchArray(str, array_obj){
var i = 1;

for (i = 1; i lte arrayLen(array_obj); i = i + 1)
if (findNoCase(array_obj[i], str)) return true;

return false;
}

If your curious, I use StringSearchArray to control which areas of my application require user login:

...
foldersNoLogin = arrayNew(1);
foldersNoLogin[1] = "/login";
foldersNoLogin[2] = "/registration";
</cfscript>
<cfif not isDefined("session.loggedin") or session.loggedin eq false>
<cfif not StringSearchArray(cgi.path_info, foldersNoLogin)>
	<cflocation addtoken="no" url="/login/">
</cfif>
</cfif>

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