libraries/Parser.php

   1 <?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');\r
   2 /**\r
   3  * CodeIgniter\r
   4  *\r
   5  * An open source application development framework for PHP 4.3.2 or newer\r
   6  *\r
   7  * @package             CodeIgniter\r
   8  * @author              ExpressionEngine Dev Team\r
   9  * @copyright   Copyright (c) 2008, EllisLab, Inc.\r
  10  * @license             http://codeigniter.com/user_guide/license.html\r
  11  * @link                http://codeigniter.com\r
  12  * @since               Version 1.0\r
  13  * @filesource\r
  14  */\r
  15 \r
  16 // ------------------------------------------------------------------------\r
  17 \r
  18 /**\r
  19  * Parser Class\r
  20  *\r
  21  * @package             CodeIgniter\r
  22  * @subpackage  Libraries\r
  23  * @category    Parser\r
  24  * @author              ExpressionEngine Dev Team\r
  25  * @link                http://codeigniter.com/user_guide/libraries/parser.html\r
  26  */\r
  27 class CI_Parser {\r
  28 \r
  29         var $l_delim = '{';\r
  30         var $r_delim = '}';\r
  31         var $object;\r
  32                 \r
  33         /**\r
  34          *  Parse a template\r
  35          *\r
  36          * Parses pseudo-variables contained in the specified template,\r
  37          * replacing them with the data in the second param\r
  38          *\r
  39          * @access      public\r
  40          * @param       string\r
  41          * @param       array\r
  42          * @param       bool\r
  43          * @return      string\r
  44          */\r
  45         function parse($template, $data, $return = FALSE)\r
  46         {\r
  47                 $CI =& get_instance();\r
  48                 $template = $CI->load->view($template, $data, TRUE);\r
  49                 \r
  50                 if ($template == '')\r
  51                 {\r
  52                         return FALSE;\r
  53                 }\r
  54                 \r
  55                 foreach ($data as $key => $val)\r
  56                 {\r
  57                         if (is_array($val))\r
  58                         {\r
  59                                 $template = $this->_parse_pair($key, $val, $template);          \r
  60                         }\r
  61                         else\r
  62                         {\r
  63                                 $template = $this->_parse_single($key, (string)$val, $template);\r
  64                         }\r
  65                 }\r
  66                 \r
  67                 if ($return == FALSE)\r
  68                 {\r
  69                         $CI->output->append_output($template);\r
  70                 }\r
  71                 \r
  72                 return $template;\r
  73         }\r
  74         \r
  75         // --------------------------------------------------------------------\r
  76         \r
  77         /**\r
  78          *  Set the left/right variable delimiters\r
  79          *\r
  80          * @access      public\r
  81          * @param       string\r
  82          * @param       string\r
  83          * @return      void\r
  84          */\r
  85         function set_delimiters($l = '{', $r = '}')\r
  86         {\r
  87                 $this->l_delim = $l;\r
  88                 $this->r_delim = $r;\r
  89         }\r
  90         \r
  91         // --------------------------------------------------------------------\r
  92         \r
  93         /**\r
  94          *  Parse a single key/value\r
  95          *\r
  96          * @access      private\r
  97          * @param       string\r
  98          * @param       string\r
  99          * @param       string\r
 100          * @return      string\r
 101          */\r
 102         function _parse_single($key, $val, $string)\r
 103         {\r
 104                 return str_replace($this->l_delim.$key.$this->r_delim, $val, $string);\r
 105         }\r
 106         \r
 107         // --------------------------------------------------------------------\r
 108         \r
 109         /**\r
 110          *  Parse a tag pair\r
 111          *\r
 112          * Parses tag pairs:  {some_tag} string... {/some_tag}\r
 113          *\r
 114          * @access      private\r
 115          * @param       string\r
 116          * @param       array\r
 117          * @param       string\r
 118          * @return      string\r
 119          */\r
 120         function _parse_pair($variable, $data, $string)\r
 121         {       \r
 122                 if (FALSE === ($match = $this->_match_pair($string, $variable)))\r
 123                 {\r
 124                         return $string;\r
 125                 }\r
 126 \r
 127                 $str = '';\r
 128                 foreach ($data as $row)\r
 129                 {\r
 130                         $temp = $match['1'];\r
 131                         foreach ($row as $key => $val)\r
 132                         {\r
 133                                 if ( ! is_array($val))\r
 134                                 {\r
 135                                         $temp = $this->_parse_single($key, $val, $temp);\r
 136                                 }\r
 137                                 else\r
 138                                 {\r
 139                                         $temp = $this->_parse_pair($key, $val, $temp);\r
 140                                 }\r
 141                         }\r
 142                         \r
 143                         $str .= $temp;\r
 144                 }\r
 145                 \r
 146                 return str_replace($match['0'], $str, $string);\r
 147         }\r
 148         \r
 149         // --------------------------------------------------------------------\r
 150         \r
 151         /**\r
 152          *  Matches a variable pair\r
 153          *\r
 154          * @access      private\r
 155          * @param       string\r
 156          * @param       string\r
 157          * @return      mixed\r
 158          */\r
 159         function _match_pair($string, $variable)\r
 160         {\r
 161                 if ( ! preg_match("|".$this->l_delim . $variable . $this->r_delim."(.+?)".$this->l_delim . '/' . $variable . $this->r_delim."|s", $string, $match))\r
 162                 {\r
 163                         return FALSE;\r
 164                 }\r
 165                 \r
 166                 return $match;\r
 167         }\r
 168 \r
 169 }\r
 170 // END Parser Class\r
 171 \r
 172 /* End of file Parser.php */\r
 173 /* Location: ./system/libraries/Parser.php */