PHPTAL-NP-0.7.0/libs/PHPTAL/Macro.php

   1 <?php
   2 /* vim: set expandtab tabstop=4 shiftwidth=4: */
   3 //
   4 //  Copyright (c) 2003 Laurent Bedubourg
   5 //
   6 //  This library is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU Lesser General Public
   8 //  License as published by the Free Software Foundation; either
   9 //  version 2.1 of the License, or (at your option) any later version.
  10 //
  11 //  This library is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 //  Lesser General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU Lesser General Public
  17 //  License along with this library; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 //
  20 //  Authors: Laurent Bedubourg <laurent.bedubourg@free.fr>
  21 //
  22
  23 /*
  24  * Macro invoker.
  25  */
  26 class PHPTAL_Macro extends PHPTAL_Template
  27 {
  28     var $_path = false;
  29     var $_name;
  30
  31     /**
  32      * Macro constructor.
  33      *
  34      * @param PHPTAL_Template $caller
  35      *        The macro caller may be a template or a macro.
  36      * @param string $path
  37      *        The macro path/name
  38      */
  39     function PHPTAL_Macro(&$caller, $path)
  40     {
  41         $this->_name = $path;
  42
  43         // extract macro path part, if none found, we'll assume macro is
  44         // in the caller template.
  45
  46         if (preg_match('/(.*?)\/([a-zA-Z0-9_]*?)$/', $this->_name, $match)) {
  47             list(, $this->_path, $this->_name) = $match;
  48         } else {
  49             $this->_sourceFile = $caller->_sourceFile;
  50         }
  51
  52         // call parent constructor
  53         $this->PHPTAL_Template($this->_path,
  54                                $caller->_repository,
  55                                $caller->_cacheDir);
  56
  57         $this->setParent($caller);
  58         $this->setEncoding($caller->getEncoding());
  59     }
  60
  61     /**
  62      * Execute macro with caller context.
  63      *
  64      * @return string
  65      */
  66     function execute()
  67     {
  68         if ($this->_path !== false) {
  69             $err = $this->_prepare();
  70             if (PEAR::isError($err)) {
  71                 return $err;
  72             }
  73         }
  74         return $this->_cacheManager->macro($this,
  75                                             $this->_sourceFile,
  76                                             $this->_name,
  77                                             $this->_parent->getContext());
  78     }
  79
  80     /**
  81      * Really process macro parsing/invocation.
  82      *
  83      * @return string
  84      */
  85     function _process()
  86     {
  87         if ($this->_path !== false) {
  88             $err = $this->_load();
  89             if (PEAR::isError($err)) {
  90                 return $err;
  91             }
  92         } else {
  93             $this->_funcName = $this->_parent->_funcName;
  94         }
  95
  96         $func = $this->_funcName . '_' . $this->_name;
  97
  98         if (!function_exists($func)) {
  99             $err = "Unknown macro '$this->_name'";
 100             return PEAR::raiseError($err);
 101         }
 102
 103         return $func($this->_parent);
 104     }
 105 }
 106
 107 ?>