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104 lines
4.7 KiB
104 lines
4.7 KiB
// <file>
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// <copyright see="prj:///doc/copyright.txt"/>
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// <license see="prj:///doc/license.txt"/>
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// <owner name="Mike Krüger" email="mike@icsharpcode.net"/>
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// <version>$Revision$</version>
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// </file>
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Xml;
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using System.Xml.Schema;
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namespace ICSharpCode.TextEditor.Document
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{
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public static class HighlightingDefinitionParser
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{
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public static DefaultHighlightingStrategy Parse(SyntaxMode syntaxMode, XmlReader xmlReader)
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{
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return Parse(highlighter: null, syntaxMode, xmlReader);
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}
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public static DefaultHighlightingStrategy Parse(DefaultHighlightingStrategy highlighter, SyntaxMode syntaxMode, XmlReader xmlReader)
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{
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if (syntaxMode == null)
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throw new ArgumentNullException(nameof(syntaxMode));
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if (xmlReader == null)
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throw new ArgumentNullException("xmlTextReader");
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try
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{
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List<ValidationEventArgs> errors = null;
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var settings = new XmlReaderSettings();
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var shemaStream = typeof(HighlightingDefinitionParser).Assembly.GetManifestResourceStream("ICSharpCode.TextEditor.Resources.Mode.xsd");
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settings.Schemas.Add(targetNamespace: null, new XmlTextReader(shemaStream));
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settings.Schemas.ValidationEventHandler += delegate(object sender, ValidationEventArgs args)
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{
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if (errors == null)
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errors = new List<ValidationEventArgs>();
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errors.Add(args);
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};
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settings.ValidationType = ValidationType.Schema;
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var validatingReader = XmlReader.Create(xmlReader, settings);
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var doc = new XmlDocument();
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doc.Load(validatingReader);
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if (highlighter == null)
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highlighter = new DefaultHighlightingStrategy(doc.DocumentElement.Attributes["name"].InnerText);
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if (doc.DocumentElement.HasAttribute("extends"))
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{
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var entry = HighlightingManager.Manager.FindHighlighterEntry(doc.DocumentElement.GetAttribute("extends"));
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if (entry.Key == null)
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throw new HighlightingDefinitionInvalidException("Cannot find referenced highlighting source " + doc.DocumentElement.GetAttribute("extends"));
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highlighter = Parse(highlighter, entry.Key, entry.Value.GetSyntaxModeFile(entry.Key));
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if (highlighter == null) return null;
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}
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if (doc.DocumentElement.HasAttribute("extensions"))
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highlighter.Extensions = doc.DocumentElement.GetAttribute("extensions").Split(';', '|');
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var environment = doc.DocumentElement["Environment"];
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if (environment != null)
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foreach (XmlNode node in environment.ChildNodes)
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if (node is XmlElement el)
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{
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if (el.Name == "Custom")
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highlighter.SetColorFor(el.GetAttribute("name"), el.HasAttribute("bgcolor") ? new HighlightBackground(el) : new HighlightColor(el));
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else
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highlighter.SetColorFor(el.Name, el.HasAttribute("bgcolor") ? new HighlightBackground(el) : new HighlightColor(el));
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}
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// parse properties
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if (doc.DocumentElement["Properties"] != null)
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foreach (XmlElement propertyElement in doc.DocumentElement["Properties"].ChildNodes)
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highlighter.Properties[propertyElement.Attributes["name"].InnerText] = propertyElement.Attributes["value"].InnerText;
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if (doc.DocumentElement["Digits"] != null)
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highlighter.DigitColor = new HighlightColor(doc.DocumentElement["Digits"]);
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var nodes = doc.DocumentElement.GetElementsByTagName("RuleSet");
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foreach (XmlElement element in nodes)
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highlighter.AddRuleSet(new HighlightRuleSet(element));
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xmlReader.Close();
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if (errors != null)
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{
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var msg = new StringBuilder();
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foreach (var args in errors)
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msg.AppendLine(args.Message);
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throw new HighlightingDefinitionInvalidException(msg.ToString());
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}
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return highlighter;
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}
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catch (Exception e)
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{
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throw new HighlightingDefinitionInvalidException("Could not load mode definition file '" + syntaxMode.FileName + "'.\n", e);
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}
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}
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}
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}
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