public void UnloadConfiguration(OptionConfiguration configuration)
{
if (configuration == null)
{
return;
}
foreach (var section in configuration.Sections)
{
foreach (var elementName in section.Children.Keys)
{
var node = _root.Find(section.Path, elementName);
if (node != null)
{
var option = node.Option;
if (option != null && option.Provider == configuration)
{
node.Option = null;
var parent = node.Parent;
if (parent != null)
{
parent.Children.Remove(node);
}
}
}
}
}
}
public void LoadConfiguration(OptionConfiguration configuration)
{
if (configuration == null)
{
return;
}
foreach (var section in configuration.Sections)
{
//必须先确保选项节对应的空节点被添加
var sectionNode = _root.FindNode(section.Path, token =>
{
if (token.Current == null)
{
var parent = token.Parent as OptionNode;
if (parent != null)
{
return(parent.Children.Add(token.Name));
}
}
return(token.Current);
});
//在添加了选项上级空节点添加完成之后再添加选项元素的节点
foreach (var elementName in section.Children.Keys)
{
var node = (OptionNode)_root.FindNode(new string[]
{
section.Path, elementName
}, token =>
{
if (token.Current == null)
{
var parent = token.Parent as OptionNode;
if (parent != null)
{
return(parent.Children.Add(token.Name, configuration));
}
}
return(token.Current);
});
}
}
}
public static OptionConfiguration Load(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
using (XmlReader reader = XmlReader.Create(stream, new XmlReaderSettings()
{
CloseInput = true, IgnoreComments = true, IgnoreProcessingInstructions = true, IgnoreWhitespace = true,
}))
{
reader.MoveToContent();
if (reader.NodeType == XmlNodeType.Element && reader.Name != XML_ROOT_ELEMENT)
{
throw new OptionConfigurationException();
}
var configuration = new OptionConfiguration(stream is FileStream ? ((FileStream)stream).Name : string.Empty);
while (reader.Read())
{
if (reader.NodeType != XmlNodeType.Element)
{
continue;
}
switch (reader.Name)
{
case XML_OPTION_ELEMENT:
ResolveOptionElement(reader, configuration);
break;
case XML_DECLARATION_COLLECTION:
ResolveDeclarationsElement(reader, configuration);
break;
default:
throw new OptionConfigurationException(string.Format("Illegal '{0}' element in '{1}' option file.", reader.Name, configuration.FilePath));
}
}
return(configuration);
}
}
private static void ResolveDeclarationsElement(XmlReader reader, OptionConfiguration configuration)
{
if (reader == null || reader.NodeType != XmlNodeType.Element || reader.Name != XML_DECLARATION_COLLECTION)
{
return;
}
var depth = reader.Depth;
while (reader.Read() && reader.Depth > depth)
{
if (reader.NodeType != XmlNodeType.Element)
{
continue;
}
if (reader.Name != XML_DECLARATION_ELEMENT)
{
throw new OptionConfigurationException(string.Format("Invalid '{0}' declaration element in '{1}' option file.", reader.Name, configuration.FilePath));
}
if (string.IsNullOrWhiteSpace(reader.GetAttribute(XML_NAME_ATTRIBUTE)))
{
throw new OptionConfigurationException("The 'name' attribute of declaration element is empty.");
}
if (string.IsNullOrWhiteSpace(reader.GetAttribute(XML_TYPE_ATTRIBUTE)))
{
throw new OptionConfigurationException("The 'type' attribute of declaration element is empty.");
}
var type = Type.GetType(reader.GetAttribute(XML_TYPE_ATTRIBUTE), false);
if (type == null)
{
throw new OptionConfigurationException(string.Format("Invalid '{0}' type of declaration.", reader.GetAttribute(XML_TYPE_ATTRIBUTE)));
}
OptionConfiguration.Declarations.Add(reader.GetAttribute(XML_NAME_ATTRIBUTE), type);
}
}
public static OptionConfiguration Open(string filePath, bool createNotExists = false)
{
if (string.IsNullOrWhiteSpace(filePath))
{
throw new ArgumentNullException("filePath");
}
return(_cache.Get(filePath.Trim(), key =>
{
if (File.Exists(key))
{
return OptionConfiguration.Load(key);
}
if (createNotExists)
{
return new OptionConfiguration(key);
}
return null;
}));
}
private static void ResolveOptionElement(XmlReader reader, OptionConfiguration configuration)
{
if (reader == null || reader.NodeType != XmlNodeType.Element || reader.Name != XML_OPTION_ELEMENT)
{
return;
}
if (string.IsNullOrWhiteSpace(reader.GetAttribute("path")))
{
throw new OptionConfigurationException("The 'path' attribute of option element is empty or unspecified.");
}
var section = configuration._sections[reader.GetAttribute(XML_PATH_ATTRIBUTE)];
if (section == null)
{
section = configuration._sections.Add(reader.GetAttribute(XML_PATH_ATTRIBUTE));
}
while (reader.Read() && reader.Depth > 1)
{
if (reader.NodeType != XmlNodeType.Element)
{
continue;
}
var typeName = reader.GetAttribute(reader.Name + ".type");
OptionConfigurationElement element = null;
if (string.IsNullOrWhiteSpace(typeName))
{
element = OptionConfigurationUtility.GetGlobalElement(reader.Name);
if (element == null)
{
throw new OptionConfigurationException(string.Format("The '{0}' is a undeclared option element in the '{1}' file.", reader.Name, configuration._filePath));
}
}
else
{
Type type = Type.GetType(typeName, false, true);
if (!typeof(OptionConfigurationElement).IsAssignableFrom(type))
{
throw new OptionConfigurationException(string.Format("The '{0}' is not a OptionConfigurationElement type, in the '{0}' file.", typeName, configuration._filePath));
}
element = (OptionConfigurationElement)Activator.CreateInstance(type);
}
if (element != null)
{
//保存当前元素的名称
string elementName = reader.Name;
//判断获取的配置项元素是否为配置项集合
var collection = element as OptionConfigurationElementCollection;
if (collection == null)
{
element.DeserializeElement(reader);
}
else
{
int depth = reader.Depth;
//由于在OptionConfigurationSection中不允许存在默认集合，则此处始终应将读取器移动到其下的子元素的XML节点上
while (reader.Read() && reader.Depth > depth)
{
if (reader.NodeType == XmlNodeType.Element)
{
collection.DeserializeElement(reader.ReadSubtree());
}
}
}
//将处理完毕的元素对象加入到当前选项节中
section.Children.Add(elementName, element);
}
}
}
