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<?php
/**
* GForge Project Management Facility
*
* Copyright 2002 GForge, LLC
* http://gforge.org/
*
* This file is part of GForge.
*
* GForge is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GForge is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GForge; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 US
*/
/**
* This class is a simple utility to validate fields
*
* Sample usage:
*
* $v = new Validator();
* $v->check($summary, "summary");
* $v->check($detail, "detail");
* if (!$v->isClean()) {
* print $v->formErrorMsg("The following fields were null:");
* }
*
*/
class Validator {
var $badfields;
/**
* Checks to see if a field is null; if so, the field name is added to an internal array
*
* @param field - a variable to check for null
* @param name - the variable name
*/
function check($field, $name) {
if (!$field) {
$this->badfields[] = $name;
}
}
/**
* Returns true if no null fields have been checked so far
*
* @return boolean - True if there are no null fields so far
*/
function isClean() {
return count($this->badfields) == 0;
}
/**
* Returns an error message which contains the null field names which have been checked
*
* @param preamble string - A string with which to start the error message
* @return string - A complete error message
*/
function formErrorMsg($preamble) {
foreach ($this->badfields as $field) {
$preamble = $preamble.$field.",";
}
return substr($preamble, 0, strlen($preamble)-1);
}
}
?>
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