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431 mathias 1 
<?php
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//
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// +----------------------------------------------------------------------+
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// | PHP Version 4                                                        |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2002 The PHP Group                                |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 2.02 of the PHP license,      |
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// | that is bundled with this package in the file LICENSE, and is        |
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// | available at through the world-wide-web at                           |
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// | http://www.php.net/license/2_02.txt.                                 |
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// | If you did not receive a copy of the PHP license and are unable to   |
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// | obtain it through the world-wide-web, please send a note to          |
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// | license@php.net so we can mail you a copy immediately.               |
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// +----------------------------------------------------------------------+
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// | Authors: Bernd Römer <berndr@bonn.edu>                               |
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// |          Sebastian Bergmann <sb@sebastian-bergmann.de>               |
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// |          Tomas V.V.Cox <cox@idecnet.com> (tree mapping from xml file)|
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// +----------------------------------------------------------------------+
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//
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// $Id: Tree.php,v 1.1 2005-04-18 16:13:31 jpm Exp $
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//
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24 
require_once 'XML/Parser.php';
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require_once 'XML/Tree/Node.php';
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27 
/**
28 
* PEAR::XML_Tree
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*
30 
* Purpose
31 
*
32 
*    Allows for the building of XML data structures
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*    using a tree representation, without the need
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*    for an extension like DOMXML.
35 
*
36 
* Example
37 
*
38 
*    $tree  = new XML_Tree;
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*    $root =& $tree->addRoot('root');
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*    $foo  =& $root->addChild('foo');
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*
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*    header('Content-Type: text/xml');
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*    $tree->dump();
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*
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* @author  Bernd Römer <berndr@bonn.edu>
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* @package XML
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* @version $Version$ - 1.0
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*/
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class XML_Tree extends XML_Parser
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{
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    /**
52 
    * File Handle
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    *
54 
    * @var  ressource
55 
    */
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    var $file = NULL;
57 
 
58 
    /**
59 
    * Filename
60 
    *
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    * @var  string
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    */
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    var $filename = '';
64 
 
65 
    /**
66 
    * Namespace
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    *
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    * @var  array
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    */
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    var $namespace = array();
71 
 
72 
    /**
73 
    * Root
74 
    *
75 
    * @var  object XML_Tree_Node
76 
    */
77 
    var $root = NULL;
78 
 
79 
    /**
80 
    * XML Version
81 
    *
82 
    * @var  string
83 
    */
84 
    var $version = '1.0';
85 
 
86 
    /**
87 
    * Constructor
88 
    *
89 
    * @param  string  Filename
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    * @param  string  XML Version
91 
    */
92 
    function XML_Tree($filename = '', $version = '1.0') {
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        $this->filename = $filename;
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        $this->version  = $version;
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    }
96 
 
97 
    /**
98 
    * Add root node.
99 
    *
100 
    * @param  string  $name     name of root element
101 
    * @return object XML_Tree_Node   reference to root node
102 
    *
103 
    * @access public
104 
    */
105 
    function &addRoot($name, $content = '', $attributes = array()) {
106 
        $this->root = new XML_Tree_Node($name, $content, $attributes);
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        return $this->root;
108 
    }
109 
 
110 
    /**
111 
    * @deprecated
112 
    */
113 
    function &add_root($name, $content = '', $attributes = array()) {
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        return $this->addRoot($name, $content, $attributes);
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    }
116 
 
117 
    /**
118 
    * inserts a child/tree (child) into tree ($path,$pos) and
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    * maintains namespace integrity
120 
    *
121 
    * @param array      $path           path to parent of child to remove
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    * @param integer    $pos            position of child to be inserted in its parents children-list
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    * @param mixed      $child          child-node (by XML_Tree,XML_Node or Name)
124 
    * @param string     $content        content (text) for new node
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    * @param array      $attributes     attribute-hash for new node
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    *
127 
    * @return object XML_Tree_Node inserted child (node)
128 
    * @access public
129 
    */
130 
    function &insertChild($path,$pos,$child, $content = '', $attributes = array()) {
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        // update namespace to maintain namespace integrity
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        $count=count($path);
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        foreach($this->namespace as $key => $val) {
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            if ((array_slice($val,0,$count)==$path) && ($val[$count]>=$pos))
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                $this->namespace[$key][$count]++;
136 
        }
137 
 
138 
        $parent=&$this->get_node_by_path($path);
139 
        return($parent->insert_child($pos,$child,$content,$attributes));
140 
    }
141 
 
142 
    /**
143 
    * @deprecated
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    */
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    function &insert_child($path,$pos,$child, $content = '', $attributes = array()) {
146 
        return $this->insertChild($path, $child, $content, $attributes);
147 
    }
148 
 
149 
    /*
150 
    * removes a child ($path,$pos) from tree ($path,$pos) and
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    * maintains namespace integrity
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    *
153 
    * @param array      $path   path to parent of child to remove
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    * @param integer    $pos    position of child in parents children-list
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    *
156 
    * @return object XML_Tree_Node parent whichs child was removed
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    * @access public
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    */
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    function &removeChild($path,$pos) {
160 
        // update namespace to maintain namespace integrity
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        $count=count($path);
162 
        foreach($this->namespace as $key => $val) {
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            if (array_slice($val,0,$count)==$path) {
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                if ($val[$count]==$pos) { unset($this->namespace[$key]); break; }
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                if ($val[$count]>$pos)
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                    $this->namespace[$key][$count]--;
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            }
168 
        }
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170 
        $parent=&$this->get_node_by_path($path);
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        return($parent->remove_child($pos));
172 
    }
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174 
    /**
175 
    * @deprecated
176 
    */
177 
    function &remove_child($path, $pos) {
178 
        return $this->removeChild($path, $pos);
179 
    }
180 
 
181 
    /*
182 
    * Maps a xml file to a objects tree
183 
    *
184 
    * @return mixed The objects tree (XML_tree or an Pear error)
185 
    * @access public
186 
    */
187 
    function &getTreeFromFile ()
188 
    {
189 
        $this->folding = false;
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        $this->XML_Parser(null, 'event');
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        $err = $this->setInputFile($this->filename);
192 
        if (PEAR::isError($err)) {
193 
            return $err;
194 
        }
195 
        $this->cdata = null;
196 
        $err = $this->parse();
197 
        if (PEAR::isError($err)) {
198 
            return $err;
199 
        }
200 
        return $this->root;
201 
    }
202 
 
203 
    function getTreeFromString($str)
204 
    {
205 
        $this->folding = false;
206 
        $this->XML_Parser(null, 'event');
207 
        $this->cdata = null;
208 
        $err = $this->parseString($str);
209 
        if (PEAR::isError($err)) {
210 
            return $err;
211 
        }
212 
        return $this->root;
213 
    }
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    /**
216 
    * Handler for the xml-data
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    *
218 
    * @param mixed  $xp         ignored
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    * @param string $elem       name of the element
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    * @param array  $attribs    attributes for the generated node
221 
    *
222 
    * @access private
223 
    */
224 
    function startHandler($xp, $elem, &$attribs)
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    {
226 
        // root elem
227 
        if (!isset($this->i)) {
228 
            $this->obj1 =& $this->add_root($elem, null, $attribs);
229 
            $this->i = 2;
230 
        } else {
231 
            // mixed contents
232 
            if (!empty($this->cdata)) {
233 
                $parent_id = 'obj' . ($this->i - 1);
234 
                $parent    =& $this->$parent_id;
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                $parent->children[] = &new XML_Tree_Node(null, $this->cdata);
236 
            }
237 
            $obj_id = 'obj' . $this->i++;
238 
            $this->$obj_id = &new XML_Tree_Node($elem, null, $attribs);
239 
        }
240 
        $this->cdata = null;
241 
        return null;
242 
    }
243 
 
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    /**
245 
    * Handler for the xml-data
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    *
247 
    * @param mixed  $xp         ignored
248 
    * @param string $elem       name of the element
249 
    *
250 
    * @access private
251 
    */
252 
    function endHandler($xp, $elem)
253 
    {
254 
        $this->i--;
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        if ($this->i > 1) {
256 
            $obj_id = 'obj' . $this->i;
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            // recover the node created in StartHandler
258 
            $node   =& $this->$obj_id;
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            // mixed contents
260 
            if (count($node->children) > 0) {
261 
                if (trim($this->cdata)) {
262 
                    $node->children[] = &new XML_Tree_Node(null, $this->cdata);
263 
                }
264 
            } else {
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                $node->set_content($this->cdata);
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            }
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            $parent_id = 'obj' . ($this->i - 1);
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            $parent    =& $this->$parent_id;
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            // attach the node to its parent node children array
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            $parent->children[] = $node;
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        }
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        $this->cdata = null;
273 
        return null;
274 
    }
275 
 
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    /*
277 
    * The xml character data handler
278 
    *
279 
    * @param mixed  $xp         ignored
280 
    * @param string $data       PCDATA between tags
281 
    *
282 
    * @access private
283 
    */
284 
    function cdataHandler($xp, $data)
285 
    {
286 
        if (trim($data)) {
287 
            $this->cdata .= $data;
288 
        }
289 
    }
290 
 
291 
    /**
292 
    * Get a copy of this tree.
293 
    *
294 
    * @return object XML_Tree
295 
    * @access public
296 
    */
297 
    function clone() {
298 
        $clone=new XML_Tree($this->filename,$this->version);
299 
        $clone->root=$this->root->clone();
300 
 
301 
        // clone all other vars
302 
        $temp=get_object_vars($this);
303 
        foreach($temp as $varname => $value)
304 
            if (!in_array($varname,array('filename','version','root')))
305 
                $clone->$varname=$value;
306 
 
307 
        return($clone);
308 
    }
309 
 
310 
    /**
311 
    * Print text representation of XML tree.
312 
    *
313 
    * @access public
314 
    */
315 
    function dump() {
316 
        echo $this->get();
317 
    }
318 
 
319 
    /**
320 
    * Get text representation of XML tree.
321 
    *
322 
    * @return  string  XML
323 
    * @access public
324 
    */
325 
    function &get() {
326 
        $out = '<?xml version="' . $this->version . "\"?>\n";
327 
        $out .= $this->root->get();
328 
 
329 
        return $out;
330 
    }
331 
 
332 
    /**
333 
    * Get current namespace.
334 
    *
335 
    * @param  string  $name namespace
336 
    * @return string
337 
    *
338 
    * @access public
339 
    */
340 
    function &getName($name) {
341 
        return $this->root->get_element($this->namespace[$name]);
342 
    }
343 
 
344 
    /**
345 
    * @deprecated
346 
    */
347 
    function &get_name($name) {
348 
        return $this->getName($name);
349 
    }
350 
 
351 
    /**
352 
    * Register a namespace.
353 
    *
354 
    * @param  string  $name namespace
355 
    * @param  string  $path path
356 
    *
357 
    * @access public
358 
    */
359 
    function registerName($name, $path) {
360 
        $this->namespace[$name] = $path;
361 
    }
362 
 
363 
    /**
364 
    * @deprecated
365 
    */
366 
    function register_name($name, $path) {
367 
        return $this->registerName($name, $path);
368 
    }
369 
}
370 
?>