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<?php
/*
** Zabbix
** Copyright (C) 2001-2019 Zabbix SIA
**
** This program 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.
**
** This program 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 this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
abstract class CValidator {
/**
* Name of the object that can be used in error message. If it is set, it will replace the %1$s placeholder and
* all other places holders will be shifted by +1.
*
* @var string
*/
protected $objectName;
/**
* Validation errors.
*
* @var array
*/
private $error;
public function __construct(array $options = []) {
// set options
foreach ($options as $key => $value) {
$this->$key = $value;
}
}
/**
* Returns true if the given $value is valid, or set's an error and returns false otherwise.
*
* @abstract
*
* @param $value
*
* @return bool
*/
abstract public function validate($value);
/**
* Get first validation error.
*
* @return string
*/
public function getError() {
return $this->error;
}
/**
* Add validation error.
*
* @param $error
*/
protected function setError($error) {
$this->error = $error;
}
/**
* @param string $name
*/
public function setObjectName($name) {
$this->objectName = $name;
}
/**
* Throws an exception when trying to set an unexisting validator option.
*
* @param $name
* @param $value
*
* @throws Exception
*/
public function __set($name, $value) {
throw new Exception(sprintf('Incorrect option "%1$s" for validator "%2$s".', $name, get_class($this)));
}
/**
* Adds a validation error with custom parameter support. The value of $objectName will be passed as the
* first parameter.
*
* @param string $message Message optionally containing placeholders to substitute.
* @param mixed $param Unlimited number of optional parameters to replace sequential placeholders.
*
* @return string
*/
protected function error($message) {
$arguments = array_slice(func_get_args(), 1);
if ($this->objectName !== null) {
array_unshift($arguments, $this->objectName);
}
$this->setError(vsprintf($message, $arguments));
}
/**
* Returns string representation of a variable.
*
* @param mixed $value
* @return string
*/
protected function stringify($value) {
if (is_bool($value)) {
return $value ? 'true' : 'false';
}
elseif (is_null($value)) {
return 'null';
}
elseif (is_object($value)) {
return get_class($value);
}
elseif (is_scalar($value)) {
return (string)$value;
}
else {
return gettype($value);
}
}
}
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