File: include/core/WASimpleXML.lib

<?php

/*
    WASimpleXML.lib, DomCore, the WebAbility(r) Core System
    Contains the basic class to compile any XML to a readable PHP array
    (c) 2008-2012 Philippe Thomassigny

    This file is part of DomCore

    DomCore is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    DomCore is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with DomCore.  If not, see <http://www.gnu.org/licenses/>.
*/

/* @UML_Box
|------------------------------------------------------------------|
| WASimpleXML: XML reader                                          |
|------------------------------------------------------------------|
|------------------------------------------------------------------|
| + ::compile($buffer: string): Array                              |
| - ::convert($xml: XMLNode): Array                                |
| + ::tags($buffer: string): Array                                 |
| - ::converttags($xml: XMLNode): Array                            |
|------------------------------------------------------------------|
@End_UML_Box */

// Static class to compile any XML file
class WASimpleXML
{
  public static function compile($buffer)
  {
    $tree = array();
    if (strpos($buffer, '<?xml') !== false)
    {
      $xml = simplexml_load_string($buffer);
      $tree = self::convert($xml);
    }
    return $tree;
  }

  private static function convert($xml)
  {
    if (!($xml instanceof SimpleXMLElement))
      return $xml;

    $nodename = $xml->getName();
    $node = array('tag' => $nodename);

    // 1. the attributes
    foreach ($xml->attributes() as $name => $value)
    {
      $node['attributes'][$name] = (string)$value;
    }

    // 2. the children
    foreach ($xml->children() as $name => $value)
    {
      $node[] = self::convert($value);
    }

    // 3. the content data
    $data = trim((string)$xml);
    if ($data)
      $node['data'] = $data;

    return $node;
  }

  public static function tags($buffer)
  {
    $tree = array();
    if (strpos($buffer, '<?xml') !== false)
    {
      $xml = simplexml_load_string($buffer);
      $tree = self::converttags($xml);
    }
    return $tree;
  }

  private static function converttags($xml)
  {
    if (!($xml instanceof SimpleXMLElement))
      return $xml;

    $node = array();
    // the children
    $item = 0;
    $names = array();
    foreach ($xml->children() as $name => $value)
    {
      if (isset($node[$name]))
      {
        if (isset($names[$name]))
          $node[$name][] = self::converttags($value);
        else
        {
          $node[$name] = array($node[$name], self::converttags($value));
          $names[$name] = true;
        }
      }
      else
        $node[$name] = self::converttags($value);
      $item ++;
    }
    if ($item)
      return $node;

    // the content data
    $data = trim((string)$xml);
    if ($data)
      return $data;

    return null;
  }

}

?>