added initial support for service definition

ServiceDefinition/Loader/XmlFileLoader.php

@@ -0,0 +1,116 @@
+<?php
+
+namespace Bundle\WebServiceBundle\ServiceDefinition\Loader;
+
+use Bundle\WebServiceBundle\ServiceDefinition\ServiceType;
+
+use Bundle\WebServiceBundle\ServiceDefinition\ServiceDefinition;
+
+use Bundle\WebServiceBundle\ServiceDefinition\ServiceMethod;
+
+use Bundle\WebServiceBundle\ServiceDefinition\ServiceHeader;
+
+class XmlFileLoader extends FileLoader
+{
+    public function loadServiceDefinition(ServiceDefinition $definition)
+    {
+        $xml = $this->parseFile($this->file);
+
+        if($definition->getName() != $xml['name'])
+        {
+            throw new \InvalidArgumentException();
+        }
+
+        foreach($xml->header as $header)
+        {
+            $definition->getHeaders()->add($this->parseHeader($header));
+        }
+
+        foreach($xml->method as $method)
+        {
+            $definition->getMethods()->add($this->parseMethod($method));
+        }
+    }
+
+    /**
+     * @param \SimpleXMLElement $node
+     *
+     * @return \Bundle\WebServiceBundle\ServiceDefinition\ServiceHeader
+     */
+    protected function parseHeader(\SimpleXMLElement $node)
+    {
+        $header = new ServiceHeader((string)$node['name'], $this->parseType($node->type));
+
+        return $header;
+    }
+
+    /**
+     * @param \SimpleXMLElement $node
+     *
+     * @return \Bundle\WebServiceBundle\ServiceDefinition\ServiceMethod
+     */
+    protected function parseMethod(\SimpleXMLElement $node)
+    {
+        $method = new ServiceMethod((string)$node['name'], (string)$node['controller']);
+
+        return $method;
+    }
+
+    /**
+     * @param \SimpleXMLElement $node
+     *
+     * @return \Bundle\WebServiceBundle\ServiceDefinition\ServiceType
+     */
+    protected function parseType(\SimpleXMLElement $node)
+    {
+        $namespaces = $node->getDocNamespaces(true);
+        $qname = explode(':', $node['xml-type'], 2);
+        $xmlType = sprintf('{%s}%s', $namespaces[$qname[0]], $qname[1]);
+
+        $type = new ServiceType((string)$node['php-type'], $xmlType, (string)$node['converter']);
+
+        return $type;
+    }
+
+    /**
+     * @param  string $file
+     *
+     * @return \SimpleXMLElement
+     */
+    protected function parseFile($file)
+    {
+        $dom = new \DOMDocument();
+        libxml_use_internal_errors(true);
+        if (!$dom->load($file, LIBXML_COMPACT)) {
+            throw new \InvalidArgumentException(implode("\n", $this->getXmlErrors()));
+        }
+        if (!$dom->schemaValidate(__DIR__.'/schema/servicedefinition-1.0.xsd')) {
+            throw new \InvalidArgumentException(implode("\n", $this->getXmlErrors()));
+        }
+        $dom->validateOnParse = true;
+        $dom->normalizeDocument();
+        libxml_use_internal_errors(false);
+
+        return simplexml_import_dom($dom);
+    }
+
+    protected function getXmlErrors()
+    {
+        $errors = array();
+        foreach (libxml_get_errors() as $error) {
+            $errors[] = sprintf('[%s %s] %s (in %s - line %d, column %d)',
+                LIBXML_ERR_WARNING == $error->level ? 'WARNING' : 'ERROR',
+                $error->code,
+                trim($error->message),
+                $error->file ? $error->file : 'n/a',
+                $error->line,
+                $error->column
+            );
+        }
+
+        libxml_clear_errors();
+        libxml_use_internal_errors(false);
+
+        return $errors;
+    }
+}