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<?php
/*
* This file is part of the symfony framework.
*
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
*
* This source file is subject to the MIT license that is bundled
* with this source code in the file LICENSE.
*/
/**
* RokCommon_Service_Container_Loader_File_Xml loads XML files service definitions.
*
* @package symfony
* @subpackage dependency_injection
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
* @version SVN: $Id: Xml.php 10831 2013-05-29 19:32:17Z btowles $
*/
class RokCommon_Service_Container_Loader_File_Xml extends RokCommon_Service_Container_Loader_File
{
/**
* Loads an array of XML files.
*
* If multiple files are loaded, the services and parameters are merged.
*
* Remember that services and parameters are simple key/pair stores.
*
* When overriding a value, the old one is totally replaced, even if it is
* a "complex" value (an array for instance):
*
* <pre>
* file1.xml
* <parameter key="complex" type="collection">
* <parameter>true</parameter>
* <parameter>false</parameter>
* </parameter>
*
* file2.xml
* <parameter key="complex">foo</parameter>
* </pre>
*
* If you load file1.xml and file2.xml in this order, the value of complex
* will be "foo".
*
* @param array $files An array of XML files
*
* @return array An array of definitions and parameters
*/
public function doLoad($files)
{
return $this->parse($this->getFilesAsXml($files));
}
protected function parse(array $xmls)
{
$parameters = array();
$definitions = array();
foreach ($xmls as $file => $xml)
{
// create all the anonymous services and give them unique names
list($anonymousDefinitions, $xml) = $this->processAnonymousServices($xml, $file);
$definitions = array_merge($definitions, $anonymousDefinitions);
// imports
list($importedDefinitions, $importedParameters) = $this->parseImports($xml, $file);
$definitions = array_merge($definitions, $importedDefinitions);
$parameters = array_merge($parameters, $importedParameters);
// parameters
$parameters = array_merge($parameters, $this->parseParameters($xml, $file));
// services
$definitions = array_merge($definitions, $this->parseDefinitions($xml, $file));
}
return array($definitions, $parameters);
}
protected function parseParameters($xml, $file)
{
if (!$xml->parameters)
{
return array();
}
$parameters = $xml->parameters->getArgumentsAsPhp('parameter');
// replace and %current.path% with the real current path
$parameters = RokCommon_Utils_ArrayHelper::replaceTree('%current.path%', dirname($file), $parameters);
return $parameters;
}
protected function parseImports($xml, $file)
{
if (!$xml->imports)
{
return array(array(), array());
}
$definitions = array();
$parameters = array();
foreach ($xml->imports->import as $import)
{
list($importedDefinitions, $importedParameters) = $this->parseImport($import, $file);
$definitions = array_merge($definitions, $importedDefinitions);
$parameters = array_merge($parameters, $importedParameters);
}
return array($definitions, $parameters);
}
protected function parseImport($import, $file)
{
if (isset($import['class']) && $import['class'] != get_class($this))
{
$class = (string) $import['class'];
$loader = new $class($this->container, $this->paths);
}
else
{
$loader = $this;
}
$importedFile = $this->getAbsolutePath((string) $import['resource'], dirname($file));
return call_user_func(array($loader, 'doLoad'), array($importedFile));
}
protected function parseDefinitions($xml, $file)
{
if (!$xml->services)
{
return array();
}
$definitions = array();
foreach ($xml->services->service as $service)
{
$definitions[(string) $service['id']] = $this->parseDefinition($service, $file);
}
return $definitions;
}
protected function parseDefinition($service, $file)
{
if ((string) $service['alias'])
{
return (string) $service['alias'];
}
$definition = new RokCommon_Service_Definition((string) $service['class']);
foreach (array('shared', 'constructor') as $key)
{
$method = 'set'.ucfirst($key);
if (isset($service[$key]))
{
$definition->$method((string) $service->getAttributeAsPhp($key));
}
}
if ($service->file)
{
$definition->setFile((string) $service->file);
}
$definition->setArguments($service->getArgumentsAsPhp('argument'));
if (isset($service->configurator))
{
if (isset($service->configurator['function']))
{
$definition->setConfigurator((string) $service->configurator['function']);
}
else
{
if (isset($service->configurator['service']))
{
$class = new RokCommon_Service_Reference((string) $service->configurator['service']);
}
else
{
$class = (string) $service->configurator['class'];
}
$definition->setConfigurator(array($class, (string) $service->configurator['method']));
}
}
foreach ($service->call as $call)
{
$definition->addMethodCall((string) $call['method'], $call->getArgumentsAsPhp('argument'));
}
return $definition;
}
protected function getFilesAsXml(array $files)
{
$xmls = array();
foreach ($files as $file)
{
$path = $this->getAbsolutePath($file);
if (!file_exists($path))
{
throw new InvalidArgumentException(sprintf('The service file "%s" does not exist.', $file));
}
$dom = new DOMDocument();
libxml_use_internal_errors(true);
if (!$dom->load($path))
{
throw new InvalidArgumentException(implode("\n", $this->getXmlErrors()));
}
libxml_use_internal_errors(false);
//$this->validate($dom); // Commented out to get around libxml2 update issue
$xmls[$path] = simplexml_import_dom($dom, 'RokCommon_Service_SimpleXMLElement');
}
return $xmls;
}
protected function processAnonymousServices($xml, $file)
{
$definitions = array();
$count = 0;
// find anonymous service definitions
$xml->registerXPathNamespace('container', 'http://symfony-project.org/2.0/container');
$nodes = $xml->xpath('//container:argument[boolean(@id)=false][@type="service"]');
$nodes ? $nodes : array();
foreach ($nodes as $node)
{
$node['id'] = sprintf('_%s_%d', md5($file), ++$count);
$same = false;
foreach($definitions as $definition)
{
if ($definition[0] == ($node->service))
{
$same= true;
break;
}
}
if (!$same){
$definitions[(string) $node['id']] = array($node->service, $file);
$node->service['id'] = (string) $node['id'];
}
}
// resolve definitions
krsort($definitions);
foreach ($definitions as $id => $def)
{
$definitions[$id] = $this->parseDefinition($def[0], $def[1]);
$oNode = dom_import_simplexml($def[0]);
$oNode->parentNode->removeChild($oNode);
}
return array($definitions, $xml);
}
protected function validate($dom)
{
libxml_use_internal_errors(true);
if (!$dom->schemaValidate(dirname(__FILE__).'/services.xsd'))
{
throw new InvalidArgumentException(implode("\n", $this->getXmlErrors()));
}
libxml_use_internal_errors(false);
}
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();
return $errors;
}
}
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