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 FileMaker Pro Custom Functions

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balance( theText; openbracket; closebracket; instance )

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  Average rating: 4.3  (43 votes)
  Discuss this Custom Function

Bruce Robertson, Concise Design

Get text to length that balances open/close markers

Sample Input:
balance( "((a=b); (1); [ (a,b);(c;d)]); ( 1;3;4)"; "("; ")";1)
Sample Output:
((a=b); (1); [ (a,b);(c;d)])

 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed


Given text such as JSON or HTML or XML formatted text, look for specified instance of openbracket, then look for instance of closebracket satisfying condition that count of openbracket = count of closebracket.

Returns all text up to and including identified closebracket

Can be used with single or multi character values:
{}; (); []; <tr></tr>; <: :> etc.

Recursive function.
Edited 12/17/2014

Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it


I found that if the openbracket and closebracket are the same character then the function returns a single character...the bracket.

I changed the function such that the location of the close bracket is AFTER the location of the openbracket....

original: p2 = Position ( theText; closebracket ; 1; $instance ) ;
change: p2 = Position ( theText; closebracket ; p1+1 ; $instance ) ;

Now, i can find quoted strings with the function :)

Christopher Kuhn, Temecula
July 11, 2014 4:31pm

Christopher - thanks for the suggested mod! Incorporated in revised version.

Bruce Robertson, Redmond WA
December 17, 2014 3:02pm

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Answer 4 + 8 =
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