public XmlTextReader GetSyntaxModeXmlTextReader(SyntaxMode syntaxMode)
{
string syntaxModeFile = Path.Combine(directory, syntaxMode.FileName);
if (!File.Exists(syntaxModeFile))
{
MessageBox.Show("Can't load highlighting definition " + syntaxModeFile + " (file not found)!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Hand, MessageBoxDefaultButton.Button1);
return(null);
}
return(new XmlTextReader(File.OpenRead(syntaxModeFile)));
}
//此函数接收一个syntaxMode对象和一个XmlTextReader对象为参数,分析此xmlTextReader对象所对应的语法模式文件,
//并返回一个高亮度显示策略对象(DefaultHighlightingStrategy).
DefaultHighlightingStrategy ParseSyntaxMode(SyntaxMode syntaxMode, XmlTextReader xmlTextReader)
{
try
{
//
//由于dotnetFramework2.0中不支持XmlValidatingReader，所以，将以下验证XML文件格式的代码注释掉了。
//
//System.Xml.XmlValidatingReader validatingReader = new XmlValidatingReader(xmlTextReader);
//Stream shemaStream = Assembly.GetCallingAssembly().GetManifestResourceStream("Mode.xsd");
//validatingReader.Schemas.Add("", new XmlTextReader(shemaStream));
//validatingReader.ValidationType = ValidationType.Schema;
//validatingReader.ValidationEventHandler += new ValidationEventHandler (ValidationHandler);
//以上定义了一个XmlValidatingReader对象,用于验证语法模式文件.(如CSharp-Mode.xshd)
XmlDocument doc = new XmlDocument();
//doc.Load(validatingReader); 若恢复了上面的注释，则这里也需要修改
doc.Load(xmlTextReader);
DefaultHighlightingStrategy highlighter = new DefaultHighlightingStrategy(doc.DocumentElement.Attributes["name"].InnerText);
if (doc.DocumentElement.Attributes["extensions"] != null)
{
highlighter.Extensions = doc.DocumentElement.Attributes["extensions"].InnerText.Split(new char[] { ';', '|' });
}
// parse environment color
XmlElement environment = doc.DocumentElement["Environment"];
if (environment != null)
{
foreach (XmlNode node in environment.ChildNodes)
{
if (node is XmlElement)
{
XmlElement el = (XmlElement)node;
highlighter.SetColorForEnvironment(el.Name, new HighlightColor(el));
}
}
}
// parse properties,not all xshd files have
if (doc.DocumentElement["Properties"] != null)
{
foreach (XmlElement propertyElement in doc.DocumentElement["Properties"].ChildNodes)
{
highlighter.Properties[propertyElement.Attributes["name"].InnerText] = propertyElement.Attributes["value"].InnerText;
}
}
// parse digits
if (doc.DocumentElement["Digits"] != null)
{
highlighter.DigitColor = new HighlightColor(doc.DocumentElement["Digits"]);
}
XmlNodeList nodes = doc.DocumentElement.GetElementsByTagName("RuleSet");
foreach (XmlElement element in nodes)
{
highlighter.AddRuleSet(new HighlightRuleSet(element));
}
xmlTextReader.Close();
if (errors != null)
{
ReportErrors(syntaxMode.FileName);
errors = null;
return(null);
}
else
{
return(highlighter);
}
}
catch (Exception e)
{
MessageBox.Show("不能加载语法模式文件.\n" + e.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1);
return(null);
}
}