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94 jpm 1 
<?php
2 
/**
187 mathias 3 
 * PEAR_XMLParser
94 jpm 4 
 *
5 
 * PHP versions 4 and 5
6 
 *
7 
 * @category   pear
8 
 * @package    PEAR
9 
 * @author     Greg Beaver <cellog@php.net>
10 
 * @author     Stephan Schmidt (original XML_Unserializer code)
187 mathias 11 
 * @copyright  1997-2009 The Authors
12 
 * @license   http://opensource.org/licenses/bsd-license New BSD License
94 jpm 13 
 * @link       http://pear.php.net/package/PEAR
14 
 * @since      File available since Release 1.4.0a1
15 
 */
16 
 
17 
/**
18 
 * Parser for any xml file
187 mathias 19 
 * @category  pear
20 
 * @package   PEAR
21 
 * @author    Greg Beaver <cellog@php.net>
22 
 * @author    Stephan Schmidt (original XML_Unserializer code)
23 
 * @copyright 1997-2009 The Authors
24 
 * @license   http://opensource.org/licenses/bsd-license New BSD License
25 
 * @version   Release: 1.10.1
26 
 * @link      http://pear.php.net/package/PEAR
27 
 * @since     Class available since Release 1.4.0a1
94 jpm 28 
 */
29 
class PEAR_XMLParser
30 
{
31 
    /**
32 
     * unserilialized data
33 
     * @var string $_serializedData
34 
     */
35 
    var $_unserializedData = null;
36 
 
37 
    /**
38 
     * name of the root tag
39 
     * @var string $_root
40 
     */
41 
    var $_root = null;
42 
 
43 
    /**
44 
     * stack for all data that is found
45 
     * @var array    $_dataStack
46 
     */
187 mathias 47 
    var $_dataStack = array();
94 jpm 48 
 
49 
    /**
50 
     * stack for all values that are generated
51 
     * @var array    $_valStack
52 
     */
187 mathias 53 
    var $_valStack = array();
94 jpm 54 
 
55 
    /**
56 
     * current tag depth
57 
     * @var int    $_depth
58 
     */
59 
    var $_depth = 0;
60 
 
61 
    /**
187 mathias 62 
     * The XML encoding to use
63 
     * @var string $encoding
64 
     */
65 
    var $encoding = 'ISO-8859-1';
66 
 
67 
    /**
94 jpm 68 
     * @return array
69 
     */
70 
    function getData()
71 
    {
72 
        return $this->_unserializedData;
73 
    }
74 
 
75 
    /**
76 
     * @param string xml content
77 
     * @return true|PEAR_Error
78 
     */
79 
    function parse($data)
80 
    {
81 
        if (!extension_loaded('xml')) {
82 
            include_once 'PEAR.php';
83 
            return PEAR::raiseError("XML Extension not found", 1);
84 
        }
187 mathias 85 
        $this->_dataStack =  $this->_valStack = array();
94 jpm 86 
        $this->_depth = 0;
87 
 
187 mathias 88 
        if (
89 
            strpos($data, 'encoding="UTF-8"')
90 
            || strpos($data, 'encoding="utf-8"')
91 
            || strpos($data, "encoding='UTF-8'")
92 
            || strpos($data, "encoding='utf-8'")
93 
        ) {
94 
            $this->encoding = 'UTF-8';
94 jpm 95 
        }
187 mathias 96 
 
97 
        $xp = xml_parser_create($this->encoding);
94 jpm 98 
        xml_parser_set_option($xp, XML_OPTION_CASE_FOLDING, 0);
99 
        xml_set_object($xp, $this);
100 
        xml_set_element_handler($xp, 'startHandler', 'endHandler');
101 
        xml_set_character_data_handler($xp, 'cdataHandler');
102 
        if (!xml_parse($xp, $data)) {
103 
            $msg = xml_error_string(xml_get_error_code($xp));
104 
            $line = xml_get_current_line_number($xp);
105 
            xml_parser_free($xp);
106 
            include_once 'PEAR.php';
107 
            return PEAR::raiseError("XML Error: '$msg' on line '$line'", 2);
108 
        }
109 
        xml_parser_free($xp);
110 
        return true;
111 
    }
112 
 
113 
    /**
114 
     * Start element handler for XML parser
115 
     *
116 
     * @access private
117 
     * @param  object $parser  XML parser object
118 
     * @param  string $element XML element
119 
     * @param  array  $attribs attributes of XML tag
120 
     * @return void
121 
     */
122 
    function startHandler($parser, $element, $attribs)
123 
    {
124 
        $this->_depth++;
125 
        $this->_dataStack[$this->_depth] = null;
126 
 
127 
        $val = array(
187 mathias 128 
            'name'         => $element,
129 
            'value'        => null,
130 
            'type'         => 'string',
131 
            'childrenKeys' => array(),
132 
            'aggregKeys'   => array()
133 
       );
94 jpm 134 
 
135 
        if (count($attribs) > 0) {
136 
            $val['children'] = array();
137 
            $val['type'] = 'array';
138 
            $val['children']['attribs'] = $attribs;
139 
        }
140 
 
141 
        array_push($this->_valStack, $val);
142 
    }
143 
 
144 
    /**
145 
     * post-process data
146 
     *
147 
     * @param string $data
148 
     * @param string $element element name
149 
     */
150 
    function postProcess($data, $element)
151 
    {
152 
        return trim($data);
153 
    }
154 
 
155 
    /**
156 
     * End element handler for XML parser
157 
     *
158 
     * @access private
159 
     * @param  object XML parser object
160 
     * @param  string
161 
     * @return void
162 
     */
163 
    function endHandler($parser, $element)
164 
    {
165 
        $value = array_pop($this->_valStack);
166 
        $data  = $this->postProcess($this->_dataStack[$this->_depth], $element);
167 
 
168 
        // adjust type of the value
187 mathias 169 
        switch (strtolower($value['type'])) {
170 
            // unserialize an array
94 jpm 171 
            case 'array':
172 
                if ($data !== '') {
173 
                    $value['children']['_content'] = $data;
174 
                }
187 mathias 175 
 
176 
                $value['value'] = isset($value['children']) ? $value['children'] : array();
94 jpm 177 
                break;
178 
 
179 
            /*
180 
             * unserialize a null value
181 
             */
182 
            case 'null':
183 
                $data = null;
184 
                break;
185 
 
186 
            /*
187 
             * unserialize any scalar value
188 
             */
189 
            default:
190 
                settype($data, $value['type']);
191 
                $value['value'] = $data;
192 
                break;
193 
        }
187 mathias 194 
 
94 jpm 195 
        $parent = array_pop($this->_valStack);
196 
        if ($parent === null) {
197 
            $this->_unserializedData = &$value['value'];
198 
            $this->_root = &$value['name'];
199 
            return true;
187 mathias 200 
        }
201 
 
202 
        // parent has to be an array
203 
        if (!isset($parent['children']) || !is_array($parent['children'])) {
204 
            $parent['children'] = array();
205 
            if ($parent['type'] != 'array') {
206 
                $parent['type'] = 'array';
94 jpm 207 
            }
187 mathias 208 
        }
94 jpm 209 
 
187 mathias 210 
        if (!empty($value['name'])) {
211 
            // there already has been a tag with this name
212 
            if (in_array($value['name'], $parent['childrenKeys'])) {
213 
                // no aggregate has been created for this tag
214 
                if (!in_array($value['name'], $parent['aggregKeys'])) {
215 
                    if (isset($parent['children'][$value['name']])) {
216 
                        $parent['children'][$value['name']] = array($parent['children'][$value['name']]);
217 
                    } else {
218 
                        $parent['children'][$value['name']] = array();
94 jpm 219 
                    }
187 mathias 220 
                    array_push($parent['aggregKeys'], $value['name']);
94 jpm 221 
                }
187 mathias 222 
                array_push($parent['children'][$value['name']], $value['value']);
94 jpm 223 
            } else {
187 mathias 224 
                $parent['children'][$value['name']] = &$value['value'];
225 
                array_push($parent['childrenKeys'], $value['name']);
94 jpm 226 
            }
187 mathias 227 
        } else {
228 
            array_push($parent['children'],$value['value']);
94 jpm 229 
        }
187 mathias 230 
        array_push($this->_valStack, $parent);
94 jpm 231 
 
232 
        $this->_depth--;
233 
    }
234 
 
235 
    /**
236 
     * Handler for character data
237 
     *
238 
     * @access private
239 
     * @param  object XML parser object
240 
     * @param  string CDATA
241 
     * @return void
242 
     */
243 
    function cdataHandler($parser, $cdata)
244 
    {
245 
        $this->_dataStack[$this->_depth] .= $cdata;
246 
    }
187 mathias 247 
}