Issue 2

.gitignore

@@ -6,3 +6,4 @@ public/
 typo3temp/
 vendor/
 composer.lock
+Tests/Testfiles/*.json

Classes/Common/XmlDocument.php

@@ -2,30 +2,173 @@
 
 namespace Slub\LisztCommon\Common;
 
+use SimpleXMLElement;
+
 class XmlDocument
 {
-
     protected string $xmlString;
 
+    // Set up configuration vars
+    protected bool $includeLiteralString;
+    protected bool $includeXmlId;
+    protected array $splitSymbols;
+
+    // Private helper vars
+    protected array $convertedArray;
+
     public function __construct(string $xmlString)
     {
         $this->xmlString = $xmlString;
+
+        // Deal with xml-reserved symbols
+        $this->xmlString = str_replace('&', '&', $this->xmlString);
+
+        // Default config
+        $this->includeLiteralString = false;
+        $this->includeXmlId = true;
+        $this->splitSymbols = array();
     }
 
-    public static function from (string $xmlString): XmlDocument
+    // Set up config, if needed
+
+    public function setConfig(array $config)
+    {
+        $this->includeLiteralString = $config['literalString'];
+        $this->includeXmlId = $config['xmlId'];
+        $this->splitSymbols = $config['splitSymbols'];
+        return $this;
+    }
+
+    // Functions to set single config aspects
+
+    public function setXmlId(bool $xmlId)
+    {
+        $this->includeXmlId = $xmlId;
+        return $this;
+    }
+
+    public function setLiteralString(bool $literal)
+    {
+        $this->includeLiteralString = $literal;
+        return $this;
+    }
+
+    public function setSplitSymbols(array $splitSymbols)
+    {
+        $this->splitSymbols = $splitSymbols;
+        return $this;
+    }
+
+    public static function from(string $xmlString): XmlDocument
     {
         return new XmlDocument($xmlString);
     }
 
     public function toArray(): array
     {
-        // add function here
-        return [];
+        // Check if array is already converted
+        if (isset($this->convertedArray)) {
+            return $this->convertedArray;
+        }
+
+        $this->convertedArray = [];
+        $xml = simplexml_load_string($this->xmlString);
+        $this->convertedArray[$this->getXmlId($xml)] = $this->convert($xml);
+        return $this->convertedArray;
+    }
+
+    public function toJson()
+    {
+        $result = [];
+        $xmlArray = $this->toArray();
+
+        /*
+         * Convert every key value pair to valid json,
+         * then decode it, so it stays valid when the whole
+         * array is encoded
+         */
+        foreach ($xmlArray as $id => $value) {
+            $result[$id] = json_encode($value);
+            $result[$id] = json_decode($result[$id], true);
+        }
+        return trim(json_encode($result));
+    }
+
+    protected function convert(SimpleXMLElement $node): array
+    {
+        $result = [];
+
+        // Parse attributes
+        $attrs = collect($node->attributes())->filter(function ($attrValue) {
+            return !empty(trim(strval($attrValue)));
+        })->mapWithKeys(function ($attrValue, $attrName) {
+            return [$attrName => trim((string) $attrValue)];
+        })->toArray();
+
+        // Merge parsed attributes with result array
+        if (!empty($attrs)) {
+            $result = array_merge_recursive($result, ['@attributes' => $attrs]);
+        }
+
+        // Parse value
+        $nodeValue = trim((string) $node);
+        if (!empty($nodeValue)) {
+            $result['@value'] = $nodeValue;
+        }
+
+        // Include xml:id attribute
+        if ($this->includeXmlId) {
+            $xmlId = $node->attributes('xml', true)->id;
+            $trimmedXmlId = trim(strval($xmlId));
+            if (!empty($trimmedXmlId)) {
+                $result['@xml:id'] = $trimmedXmlId;
+            }
+        }
+
+        // Check if node is a mixed-content element (if literalString is set to true)
+
+        if ($this->includeLiteralString) {
+            if ($node->getName() == 'p' && $node->count() > 0 && !empty($node)) {
+                // Add literal string, to store the node order
+                $literal = str_replace(array("\n", "\r"), '', trim($node->asXML()));
+                $literal = str_replace('<?xml version="1.0"?>', '', $literal);
+                $result['@literal'] = $literal;
+            }
+        }
+
+        $toParse = collect($node->children())->filter(function ($subject) use ($node, &$result) {
+            foreach ($this->splitSymbols as $symbol) {
+                if ($subject->getName() == $symbol) {
+                    $result['@link'] = $this->getXmlId($subject);
+                    $this->convertedArray[$this->getXmlId($subject)] = $this->convert($subject);
+                    return false;
+                }
+            }
+            return true;
+        });
+
+        $toParse->each(function ($subject) use (&$result) {
+            $result = $this->parseChild($subject, $result);
+        });
+
+        return $result;
+    }
+
+    private function parseChild(SimpleXMLElement $child, array $result)
+    {
+        $childName = $child->getName();
+        $childData = $this->convert($child);
+        // Always parse child nodes as array
+        if (!isset($result[$childName])) {
+            $result[$childName] = [];
+        }
+        $result[$childName][] = $childData;
+
+        return $result;
     }
 
-    public function toJson(): string
+    private function getXmlId(SimpleXMLElement $xml)
     {
-        // add function here
-        return '';
+        return strval($xml->attributes('xml', true)->id);
     }
 }

README.md

@@ -13,19 +13,38 @@ This comprises the elasticsearch connection and translation of file formats.
 
 You can obtain a Controller with easy access to elasticsearch by inheriting from ClientEnabledController.
 
-    use Slub\LisztCommon\Controller\ClientEnabledController;
+```php
+use Slub\LisztCommon\Controller\ClientEnabledController;
 
-    class ActionController extends ClientEnabledController
-    {
+class ActionController extends ClientEnabledController
+{
 
-      public function ExampleAction()
-      {
-        $this->initializeClient();
-        $params = ...
-        $entity = $this->elasticClient->search($params);
-        ...
+  public function ExampleAction()
+  {
+      $this->initializeClient();
+      $params = ...
+      $entity = $this->elasticClient->search($params);
+      ...
 
-      }
+  }
 
-    }
+}
+```
 
+## Translation between XML and JSON
+
+You can read in an XML document and translate it to a PHP array or JSON.
+
+```php
+use Slub\LisztCommon\Common\XmlDocument;
+...
+
+$xmlDocument = XmlDocument::from($xmlString);
+$array = $xmlDocument->toArray();
+$json = $xmlDocument->toJson();
+```
+
+# Maintainer
+
+If you have any questions or encounter any problems, please do not hesitate to contact me.
+- [Matthias Richter](https://github.com/dikastes)

Tests/Functional/Common/Fixtures/minimal.json

@@ -1 +1 @@
- 
+{"minimal_root":{"@xml:id":"minimal_root","subroot":[{"subsubroot":[{"@value":"entry"}]}]}}

Tests/Functional/Common/Fixtures/minimal.xml

@@ -1 +1,9 @@
-
+<?xml version="1.0" encoding="UTF-8"?>
+<root xml:id="minimal_root">
+    <subroot>
+        <subsubroot>
+            entry
+        </subsubroot>
+    </subroot>
+
+</root>