tools/extensions/org.civicrm.payment.googlecheckout/packages/Google/library/xml-processing/xmlbuilder.php

   1 <?php
   2 /*
   3   Copyright (C) 2006 Google Inc.
   4
   5   This program is free software; you can redistribute it and/or
   6   modify it under the terms of the GNU General Public License
   7   as published by the Free Software Foundation; either version 2
   8   of the License, or (at your option) any later version.
   9
  10   This program is distributed in the hope that it will be useful,
  11   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13   GNU General Public License for more details.
  14
  15   You should have received a copy of the GNU General Public License
  16   along with this program; if not, write to the Free Software
  17   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18 */
  19
  20
  21
  22 /*
  23  * Class used to generate XML data
  24  * Based on sample code available at http://simon.incutio.com/code/php/XmlWriter.class.php.txt
  25  */
  26
  27 /**
  28  * Class XmlBuilder
  29  */
  30 class XmlBuilder {
  31   var $xml;
  32   var $indent;
  33   var $stack = array();
  34
  35   /**
  36    * @param string $indent
  37    */
  38   function XmlBuilder($indent = '  ') {
  39     $this->indent = $indent;
  40     $this->xml = '<?xml version="1.0" encoding="utf-8"?>' . "\n";
  41   }
  42
  43   function _indent() {
  44     for ($i = 0, $j = count($this->stack); $i < $j; $i++) {
  45       $this->xml .= $this->indent;
  46     }
  47   }
  48
  49   //Used when an element has sub-elements
  50   // This function adds an open tag to the output
  51   /**
  52    * @param $element
  53    * @param array $attributes
  54    */
  55   function Push($element, $attributes = array()) {
  56     $this->_indent();
  57     $this->xml .= '<' . $element;
  58     foreach ($attributes as $key => $value) {
  59       $this->xml .= ' ' . $key . '="' . htmlentities($value) . '"';
  60     }
  61     $this->xml .= ">\n";
  62     $this->stack[] = $element;
  63   }
  64
  65   //Used when an element has no subelements.
  66   //Data within the open and close tags are provided with the
  67   //contents variable
  68   /**
  69    * @param $element
  70    * @param $content
  71    * @param array $attributes
  72    */
  73   function Element($element, $content, $attributes = array()) {
  74     $this->_indent();
  75     $this->xml .= '<' . $element;
  76     foreach ($attributes as $key => $value) {
  77       $this->xml .= ' ' . $key . '="' . htmlentities($value) . '"';
  78     }
  79     $this->xml .= '>' . htmlentities($content) . '</' . $element . '>' . "\n";
  80   }
  81
  82   /**
  83    * @param $element
  84    * @param array $attributes
  85    */
  86   function EmptyElement($element, $attributes = array()) {
  87     $this->_indent();
  88     $this->xml .= '<' . $element;
  89     foreach ($attributes as $key => $value) {
  90       $this->xml .= ' ' . $key . '="' . htmlentities($value) . '"';
  91     }
  92     $this->xml .= " />\n";
  93   }
  94
  95   //Used to close an open tag
  96   /**
  97    * @param $pop_element
  98    */
  99   function Pop($pop_element) {
 100     $element = array_pop($this->stack);
 101     $this->_indent();
 102     if ($element !== $pop_element)die('XML Error: Tag Mismatch when trying to close "' . $pop_element . '"');
 103     else $this->xml .= "</$element>\n";
 104   }
 105
 106   /**
 107    * @return string
 108    */
 109   function GetXML() {
 110     if (count($this->stack) != 0)die('XML Error: No matching closing tag found for " ' . array_pop($this->stack) { . '"'
 111       );
 112     }
 113     else return $this->xml;
 114   }
 115 }
 116