The following entry was added to the Free Pascal contributed units:

Name : Filter and Validation
Author : L505 (Lars)
Email : fpcunits(@)z505(.)com
Homepage : http://z505.com
FTP site : https://sourceforge.net/project/showfiles.php?group_id=145841&package_id=212708 Version : 0.0.1
Date : 2006-11-24
Category : Miscellaneous
Supported OS : Windows, Linux, BSD, other
Description :
Filter and validation unit for checking whether text is an email address, is a number, is alphanumeric, is alphabetic, is underscores and alphabet, and many more. <p>
It doesn't implement every possibility in the world since each person validates vastly different information - but it includes many common validations, and it shows how you can use Pascal functions instead of regular expressions to check input. <p>
This unit is also on SVN <a href="http://opensvn.csie.org/pspcgi/general-utilities/strings/">here</a>