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<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\validators;
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use yii\base\InvalidConfigException;
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/**
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* RegularExpressionValidator validates that the attribute value matches the specified [[pattern]].
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*
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* If the [[not]] property is set true, the validator will ensure the attribute value do NOT match the [[pattern]].
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @since 2.0
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*/
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class RegularExpressionValidator extends Validator
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{
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/**
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* @var string the regular expression to be matched with
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*/
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public $pattern;
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/**
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* @var boolean whether to invert the validation logic. Defaults to false. If set to true,
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* the regular expression defined via [[pattern]] should NOT match the attribute value.
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* @throws InvalidConfigException if the "pattern" is not a valid regular expression
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**/
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public $not = false;
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/**
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* Initializes the validator.
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* @throws InvalidConfigException if [[pattern]] is not set.
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*/
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public function init()
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{
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parent::init();
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if ($this->pattern === null) {
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throw new InvalidConfigException('The "pattern" property must be set.');
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}
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}
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/**
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* Validates the attribute of the object.
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* If there is any error, the error message is added to the object.
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* @param \yii\base\Model $object the object being validated
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* @param string $attribute the attribute being validated
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*/
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public function validateAttribute($object, $attribute)
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{
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$value = $object->$attribute;
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if ((!$this->not && !preg_match($this->pattern, $value)) || ($this->not && preg_match($this->pattern, $value))) {
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$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} is invalid.');
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$this->addError($object, $attribute, $message);
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}
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}
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/**
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* Validates the given value.
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* @param mixed $value the value to be validated.
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* @return boolean whether the value is valid.
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*/
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public function validateValue($value)
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{
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return !$this->not && preg_match($this->pattern, $value)
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|| $this->not && !preg_match($this->pattern, $value);
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}
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/**
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* Returns the JavaScript needed for performing client-side validation.
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* @param \yii\base\Model $object the data object being validated
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* @param string $attribute the name of the attribute to be validated.
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* @return string the client-side validation script.
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* @throws InvalidConfigException if the "pattern" is not a valid regular expression
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*/
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public function clientValidateAttribute($object, $attribute)
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{
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$message = ($this->message !== null) ? $this->message : \Yii::t('yii|{attribute} is invalid.');
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$message = strtr($message, array(
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'{attribute}' => $object->getAttributeLabel($attribute),
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'{value}' => $object->$attribute,
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));
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$pattern = $this->pattern;
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$pattern = preg_replace('/\\\\x\{?([0-9a-fA-F]+)\}?/', '\u$1', $pattern);
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$deliminator = substr($pattern, 0, 1);
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$pos = strrpos($pattern, $deliminator, 1);
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$flag = substr($pattern, $pos + 1);
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if ($deliminator !== '/') {
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$pattern = '/' . str_replace('/', '\\/', substr($pattern, 1, $pos - 1)) . '/';
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} else {
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$pattern = substr($pattern, 0, $pos + 1);
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}
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if (!empty($flag)) {
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$pattern .= preg_replace('/[^igm]/', '', $flag);
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}
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return "
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if (" . ($this->allowEmpty ? "$.trim(value)!='' && " : '') . ($this->not ? '' : '!') . "value.match($pattern)) {
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messages.push(" . json_encode($message) . ");
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}
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";
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}
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}
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