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   1  <?php
   2  
   3  /*
   4   * This file is part of the symfony package.
   5   * (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
   6   * (c) 2004 David Heinemeier Hansson
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  /**
  13   * TagHelper defines some base helpers to construct html tags.
  14   *
  15   * @package    symfony
  16   * @subpackage helper
  17   * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
  18   * @author     David Heinemeier Hansson
  19   * @version    SVN: $Id: TagHelper.php 3336 2007-01-23 21:05:10Z fabien $
  20   */
  21  
  22  /**
  23   * Constructs an html tag.
  24   *
  25   * @param  $name    string  tag name
  26   * @param  $options array   tag options
  27   * @param  $open    boolean true to leave tag open
  28   * @return string
  29   */
  30  function tag($name, $options = array(), $open = false)
  31  {
  32    if (!$name)
  33    {
  34      return '';
  35    }
  36  
  37    return '<'.$name._tag_options($options).(($open) ? '>' : ' />');
  38  }
  39  
  40  function content_tag($name, $content = '', $options = array())
  41  {
  42    if (!$name)
  43    {
  44      return '';
  45    }
  46  
  47    return '<'.$name._tag_options($options).'>'.$content.'</'.$name.'>';
  48  }
  49  
  50  function cdata_section($content)
  51  {
  52    return "<![CDATA[$content]]>";
  53  }
  54  
  55  /**
  56   * Escape carrier returns and single and double quotes for Javascript segments.
  57   */
  58  function escape_javascript($javascript = '')
  59  {
  60    $javascript = preg_replace('/\r\n|\n|\r/', "\\n", $javascript);
  61    $javascript = preg_replace('/(["\'])/', '\\\\\1', $javascript);
  62  
  63    return $javascript;
  64  }
  65  
  66  /**
  67   * Escapes an HTML string.
  68   *
  69   * @param  string HTML string to escape
  70   * @return string escaped string
  71   */
  72  function escape_once($html)
  73  {
  74    return fix_double_escape(htmlspecialchars($html));
  75  }
  76  
  77  /**
  78   * Fixes double escaped strings.
  79   *
  80   * @param  string HTML string to fix
  81   * @return string escaped string
  82   */
  83  function fix_double_escape($escaped)
  84  {
  85    return preg_replace('/&amp;([a-z]+|(#\d+)|(#x[\da-f]+));/i', '&$1;', $escaped);
  86  }
  87  
  88  function _tag_options($options = array())
  89  {
  90    $options = _parse_attributes($options);
  91  
  92    $html = '';
  93    foreach ($options as $key => $value)
  94    {
  95      $html .= ' '.$key.'="'.escape_once($value).'"';
  96    }
  97  
  98    return $html;
  99  }
 100  
 101  function _parse_attributes($string)
 102  {
 103    return is_array($string) ? $string : sfToolkit::stringToArray($string);
 104  }
 105  
 106  function _get_option(&$options, $name, $default = null)
 107  {
 108    if (array_key_exists($name, $options))
 109    {
 110      $value = $options[$name];
 111      unset($options[$name]);
 112    }
 113    else
 114    {
 115      $value = $default;
 116    }
 117  
 118    return $value;
 119  }