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/gespac/config/PEAR/PEAR/XMLParser.php

http://gespac.googlecode.com/
PHP | 253 lines | 127 code | 26 blank | 100 comment | 24 complexity | de6c3f7f8676896a36eef666c751987e MD5 | raw file
  1<?php
  2/**
  3 * PEAR_XMLParser
  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)
 11 * @copyright  1997-2009 The Authors
 12 * @license   http://opensource.org/licenses/bsd-license New BSD License
 13 * @version    CVS: $Id: XMLParser.php 282970 2009-06-28 23:10:07Z dufuz $
 14 * @link       http://pear.php.net/package/PEAR
 15 * @since      File available since Release 1.4.0a1
 16 */
 17
 18/**
 19 * Parser for any xml file
 20 * @category  pear
 21 * @package   PEAR
 22 * @author    Greg Beaver <cellog@php.net>
 23 * @author    Stephan Schmidt (original XML_Unserializer code)
 24 * @copyright 1997-2009 The Authors
 25 * @license   http://opensource.org/licenses/bsd-license New BSD License
 26 * @version   Release: 1.9.1
 27 * @link      http://pear.php.net/package/PEAR
 28 * @since     Class available since Release 1.4.0a1
 29 */
 30class PEAR_XMLParser
 31{
 32    /**
 33     * unserilialized data
 34     * @var string $_serializedData
 35     */
 36    var $_unserializedData = null;
 37
 38    /**
 39     * name of the root tag
 40     * @var string $_root
 41     */
 42    var $_root = null;
 43
 44    /**
 45     * stack for all data that is found
 46     * @var array    $_dataStack
 47     */
 48    var $_dataStack = array();
 49
 50    /**
 51     * stack for all values that are generated
 52     * @var array    $_valStack
 53     */
 54    var $_valStack = array();
 55
 56    /**
 57     * current tag depth
 58     * @var int    $_depth
 59     */
 60    var $_depth = 0;
 61
 62    /**
 63     * The XML encoding to use
 64     * @var string $encoding
 65     */
 66    var $encoding = 'ISO-8859-1';
 67
 68    /**
 69     * @return array
 70     */
 71    function getData()
 72    {
 73        return $this->_unserializedData;
 74    }
 75
 76    /**
 77     * @param string xml content
 78     * @return true|PEAR_Error
 79     */
 80    function parse($data)
 81    {
 82        if (!extension_loaded('xml')) {
 83            include_once 'PEAR.php';
 84            return PEAR::raiseError("XML Extension not found", 1);
 85        }
 86        $this->_dataStack =  $this->_valStack = array();
 87        $this->_depth = 0;
 88
 89        if (
 90            strpos($data, 'encoding="UTF-8"')
 91            || strpos($data, 'encoding="utf-8"')
 92            || strpos($data, "encoding='UTF-8'")
 93            || strpos($data, "encoding='utf-8'")
 94        ) {
 95            $this->encoding = 'UTF-8';
 96        }
 97
 98        if (version_compare(phpversion(), '5.0.0', 'lt') && $this->encoding == 'UTF-8') {
 99            $data = utf8_decode($data);
100            $this->encoding = 'ISO-8859-1';
101        }
102
103        $xp = xml_parser_create($this->encoding);
104        xml_parser_set_option($xp, XML_OPTION_CASE_FOLDING, 0);
105        xml_set_object($xp, $this);
106        xml_set_element_handler($xp, 'startHandler', 'endHandler');
107        xml_set_character_data_handler($xp, 'cdataHandler');
108        if (!xml_parse($xp, $data)) {
109            $msg = xml_error_string(xml_get_error_code($xp));
110            $line = xml_get_current_line_number($xp);
111            xml_parser_free($xp);
112            include_once 'PEAR.php';
113            return PEAR::raiseError("XML Error: '$msg' on line '$line'", 2);
114        }
115        xml_parser_free($xp);
116        return true;
117    }
118
119    /**
120     * Start element handler for XML parser
121     *
122     * @access private
123     * @param  object $parser  XML parser object
124     * @param  string $element XML element
125     * @param  array  $attribs attributes of XML tag
126     * @return void
127     */
128    function startHandler($parser, $element, $attribs)
129    {
130        $this->_depth++;
131        $this->_dataStack[$this->_depth] = null;
132
133        $val = array(
134            'name'         => $element,
135            'value'        => null,
136            'type'         => 'string',
137            'childrenKeys' => array(),
138            'aggregKeys'   => array()
139       );
140
141        if (count($attribs) > 0) {
142            $val['children'] = array();
143            $val['type'] = 'array';
144            $val['children']['attribs'] = $attribs;
145        }
146
147        array_push($this->_valStack, $val);
148    }
149
150    /**
151     * post-process data
152     *
153     * @param string $data
154     * @param string $element element name
155     */
156    function postProcess($data, $element)
157    {
158        return trim($data);
159    }
160
161    /**
162     * End element handler for XML parser
163     *
164     * @access private
165     * @param  object XML parser object
166     * @param  string
167     * @return void
168     */
169    function endHandler($parser, $element)
170    {
171        $value = array_pop($this->_valStack);
172        $data  = $this->postProcess($this->_dataStack[$this->_depth], $element);
173
174        // adjust type of the value
175        switch (strtolower($value['type'])) {
176            // unserialize an array
177            case 'array':
178                if ($data !== '') {
179                    $value['children']['_content'] = $data;
180                }
181
182                $value['value'] = isset($value['children']) ? $value['children'] : array();
183                break;
184
185            /*
186             * unserialize a null value
187             */
188            case 'null':
189                $data = null;
190                break;
191
192            /*
193             * unserialize any scalar value
194             */
195            default:
196                settype($data, $value['type']);
197                $value['value'] = $data;
198                break;
199        }
200
201        $parent = array_pop($this->_valStack);
202        if ($parent === null) {
203            $this->_unserializedData = &$value['value'];
204            $this->_root = &$value['name'];
205            return true;
206        }
207
208        // parent has to be an array
209        if (!isset($parent['children']) || !is_array($parent['children'])) {
210            $parent['children'] = array();
211            if ($parent['type'] != 'array') {
212                $parent['type'] = 'array';
213            }
214        }
215
216        if (!empty($value['name'])) {
217            // there already has been a tag with this name
218            if (in_array($value['name'], $parent['childrenKeys'])) {
219                // no aggregate has been created for this tag
220                if (!in_array($value['name'], $parent['aggregKeys'])) {
221                    if (isset($parent['children'][$value['name']])) {
222                        $parent['children'][$value['name']] = array($parent['children'][$value['name']]);
223                    } else {
224                        $parent['children'][$value['name']] = array();
225                    }
226                    array_push($parent['aggregKeys'], $value['name']);
227                }
228                array_push($parent['children'][$value['name']], $value['value']);
229            } else {
230                $parent['children'][$value['name']] = &$value['value'];
231                array_push($parent['childrenKeys'], $value['name']);
232            }
233        } else {
234            array_push($parent['children'],$value['value']);
235        }
236        array_push($this->_valStack, $parent);
237
238        $this->_depth--;
239    }
240
241    /**
242     * Handler for character data
243     *
244     * @access private
245     * @param  object XML parser object
246     * @param  string CDATA
247     * @return void
248     */
249    function cdataHandler($parser, $cdata)
250    {
251        $this->_dataStack[$this->_depth] .= $cdata;
252    }
253}