interface/modules/zend_modules/library/Zend/Config/Writer/Xml.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Config\Writer;
  11
  12 use XMLWriter;
  13 use Zend\Config\Exception;
  14
  15 class Xml extends AbstractWriter
  16 {
  17     /**
  18      * processConfig(): defined by AbstractWriter.
  19      *
  20      * @param  array $config
  21      * @return string
  22      */
  23     public function processConfig(array $config)
  24     {
  25         $writer = new XMLWriter('UTF-8');
  26         $writer->openMemory();
  27         $writer->setIndent(true);
  28         $writer->setIndentString(str_repeat(' ', 4));
  29
  30         $writer->startDocument('1.0', 'UTF-8');
  31         $writer->startElement('zend-config');
  32
  33         foreach ($config as $sectionName => $data) {
  34             if (!is_array($data)) {
  35                 $writer->writeElement($sectionName, (string) $data);
  36             } else {
  37                 $this->addBranch($sectionName, $data, $writer);
  38             }
  39         }
  40
  41         $writer->endElement();
  42         $writer->endDocument();
  43
  44         return $writer->outputMemory();
  45     }
  46
  47     /**
  48      * Add a branch to an XML object recursively.
  49      *
  50      * @param  string    $branchName
  51      * @param  array     $config
  52      * @param  XMLWriter $writer
  53      * @return void
  54      * @throws Exception\RuntimeException
  55      */
  56     protected function addBranch($branchName, array $config, XMLWriter $writer)
  57     {
  58         $branchType = null;
  59
  60         foreach ($config as $key => $value) {
  61             if ($branchType === null) {
  62                 if (is_numeric($key)) {
  63                     $branchType = 'numeric';
  64                 } else {
  65                     $writer->startElement($branchName);
  66                     $branchType = 'string';
  67                 }
  68             } elseif ($branchType !== (is_numeric($key) ? 'numeric' : 'string')) {
  69                 throw new Exception\RuntimeException('Mixing of string and numeric keys is not allowed');
  70             }
  71
  72             if ($branchType === 'numeric') {
  73                 if (is_array($value)) {
  74                     $this->addBranch($value, $value, $writer);
  75                 } else {
  76                     $writer->writeElement($branchName, (string) $value);
  77                 }
  78             } else {
  79                 if (is_array($value)) {
  80                     $this->addBranch($key, $value, $writer);
  81                 } else {
  82                     $writer->writeElement($key, (string) $value);
  83                 }
  84             }
  85         }
  86
  87         if ($branchType === 'string') {
  88             $writer->endElement();
  89         }
  90     }
  91 }