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<?php
/*
** Copyright (C) 2001-2025 Zabbix SIA
**
** This program is free software: you can redistribute it and/or modify it under the terms of
** the GNU Affero General Public License as published by the Free Software Foundation, version 3.
**
** 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 Affero General Public License for more details.
**
** You should have received a copy of the GNU Affero General Public License along with this program.
** If not, see <https://www.gnu.org/licenses/>.
**/
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 a nonexistent 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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