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StringLength.php
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StringLength.php
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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to [email protected] so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Validator;
/**
* @uses \Zend\Validator\AbstractValidator
* @uses \Zend\Validator\Exception
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class StringLength extends AbstractValidator
{
const INVALID = 'stringLengthInvalid';
const TOO_SHORT = 'stringLengthTooShort';
const TOO_LONG = 'stringLengthTooLong';
/**
* @var array
*/
protected $_messageTemplates = array(
self::INVALID => "Invalid type given. String expected",
self::TOO_SHORT => "'%value%' is less than %min% characters long",
self::TOO_LONG => "'%value%' is more than %max% characters long",
);
/**
* @var array
*/
protected $_messageVariables = array(
'min' => array('options' => 'min'),
'max' => array('options' => 'max'),
);
protected $options = array(
'min' => 0, // Minimum length
'max' => null, // Maximum length, null if there is no length limitation
'encoding' => null, // Encoding to use
);
/**
* Sets validator options
*
* @param integer|array|\Zend\Config\Config $options
* @return void
*/
public function __construct($options = array())
{
if (!is_array($options)) {
$options = func_get_args();
$temp['min'] = array_shift($options);
if (!empty($options)) {
$temp['max'] = array_shift($options);
}
if (!empty($options)) {
$temp['encoding'] = array_shift($options);
}
$options = $temp;
}
parent::__construct($options);
}
/**
* Returns the min option
*
* @return integer
*/
public function getMin()
{
return $this->options['min'];
}
/**
* Sets the min option
*
* @param integer $min
* @throws \Zend\Validator\Exception
* @return \Zend\Validator\StringLength Provides a fluent interface
*/
public function setMin($min)
{
if (null !== $this->getMax() && $min > $this->getMax()) {
throw new Exception\InvalidArgumentException("The minimum must be less than or equal to the maximum length, but $min >"
. " " . $this->getMax());
}
$this->options['min'] = max(0, (integer) $min);
return $this;
}
/**
* Returns the max option
*
* @return integer|null
*/
public function getMax()
{
return $this->options['max'];
}
/**
* Sets the max option
*
* @param integer|null $max
* @throws \Zend\Validator\Exception
* @return \Zend\Validator\StringLength Provides a fluent interface
*/
public function setMax($max)
{
if (null === $max) {
$this->options['max'] = null;
} else if ($max < $this->getMin()) {
throw new Exception\InvalidArgumentException("The maximum must be greater than or equal to the minimum length, but "
. "$max < " . $this->getMin());
} else {
$this->options['max'] = (integer) $max;
}
return $this;
}
/**
* Returns the actual encoding
*
* @return string
*/
public function getEncoding()
{
return $this->options['encoding'];
}
/**
* Sets a new encoding to use
*
* @param string $encoding
* @return \Zend\Validator\StringLength
*/
public function setEncoding($encoding = null)
{
if ($encoding !== null) {
$orig = iconv_get_encoding('internal_encoding');
$result = iconv_set_encoding('internal_encoding', $encoding);
if (!$result) {
throw new Exception\InvalidArgumentException('Given encoding not supported on this OS!');
}
iconv_set_encoding('internal_encoding', $orig);
}
$this->options['encoding'] = $encoding;
return $this;
}
/**
* Returns true if and only if the string length of $value is at least the min option and
* no greater than the max option (when the max option is not null).
*
* @param string $value
* @return boolean
*/
public function isValid($value)
{
if (!is_string($value)) {
$this->error(self::INVALID);
return false;
}
$this->setValue($value);
if ($this->getEncoding() !== null) {
$length = iconv_strlen($value, $this->getEncoding());
} else {
$length = iconv_strlen($value);
}
if ($length < $this->getMin()) {
$this->error(self::TOO_SHORT);
}
if (null !== $this->getMax() && $this->getMax() < $length) {
$this->error(self::TOO_LONG);
}
if (count($this->getMessages())) {
return false;
} else {
return true;
}
}
}