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   1  <?php
   2  /*
   3   *  $Id: MatchValidator.php 64 2005-05-13 02:43:56Z root $
   4   *
   5   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   6   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   7   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   8   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   9   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  10   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  11   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  12   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  13   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  14   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  15   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  16   *
  17   * This software consists of voluntary contributions made by many individuals
  18   * and is licensed under the LGPL. For more information please see
  19   * <http://propel.phpdb.org>.
  20   */
  21  
  22  require_once 'propel/validator/BasicValidator.php';
  23  
  24  /**
  25   * A validator for regular expressions.
  26   *
  27   * This validator will return true, when the passed value *matches* the
  28   * regular expression.
  29   *
  30   * ## This class replaces the former class MaskValidator ##
  31   *
  32   * If you do want to test if the value does *not* match an expression,
  33   * you can use the MatchValidator class instead.
  34   *
  35   * Below is an example usage for your Propel xml schema file.
  36   *
  37   * <code>
  38   *   <column name="email" type="VARCHAR" size="128" required="true" />
  39   *   <validator column="username">
  40   *     <!-- allow strings that match the email adress pattern -->
  41   *     <rule
  42   *       name="match"
  43   *       value="/^([a-zA-Z0-9])+([\.a-zA-Z0-9_-])*@([a-zA-Z0-9])+(\.[a-zA-Z0-9_-]+)+$/"
  44   *       message="Please enter a valid email address." />
  45   *   </validator>
  46   * </code>
  47   *
  48   * @author Michael Aichler <aichler@mediacluster.de>
  49   * @author Hans Lellelid <hans@xmpl.org>
  50   * @version $Revision: 64 $
  51   * @package propel.validator
  52   */
  53  class MatchValidator implements BasicValidator
  54  {
  55      /**
  56       * Prepares the regular expression entered in the XML
  57       * for use with preg_match().
  58       * @param string $exp
  59       * @return string Prepared regular expession.
  60       */
  61      private function prepareRegexp($exp)
  62      {
  63          // remove surrounding '/' marks so that they don't get escaped in next step
  64          if ($exp{0} !== '/' || $exp{strlen($exp)-1} !== '/' ) {
  65              $exp = '/' . $exp . '/';
  66          }
  67  
  68          // if they did not escape / chars; we do that for them
  69          $exp = preg_replace('/([^\\\])\/([^$])/', '$1\/$2', $exp);
  70  
  71          return $exp;
  72      }
  73  
  74      /**
  75       * Whether the passed string matches regular expression.
  76       */
  77      public function isValid (ValidatorMap $map, $str)
  78      {
  79          return (preg_match($this->prepareRegexp($map->getValue()), $str) != 0);
  80      }
  81  }