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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
using System;
using System.Linq;
using System.Xml;
namespace ICSharpCode.AvalonEdit.Highlighting.Xshd
{
/// <summary>
/// Xshd visitor implementation that saves an .xshd file as XML.
/// </summary>
public sealed class SaveXshdVisitor : IXshdVisitor
{
/// <summary>
/// XML namespace for XSHD.
/// </summary>
public const string Namespace = V2Loader.Namespace;
XmlWriter writer;
/// <summary>
/// Creates a new SaveXshdVisitor instance.
/// </summary>
public SaveXshdVisitor(XmlWriter writer)
{
if (writer == null)
throw new ArgumentNullException("writer");
this.writer = writer;
}
/// <summary>
/// Writes the specified syntax definition.
/// </summary>
public void WriteDefinition(XshdSyntaxDefinition definition)
{
if (definition == null)
throw new ArgumentNullException("definition");
writer.WriteStartElement("SyntaxDefinition", Namespace);
if (definition.Name != null)
writer.WriteAttributeString("name", definition.Name);
if (definition.Extensions != null)
writer.WriteAttributeString("extensions", string.Join(";", definition.Extensions.ToArray()));
definition.AcceptElements(this);
writer.WriteEndElement();
}
object IXshdVisitor.VisitRuleSet(XshdRuleSet ruleSet)
{
writer.WriteStartElement("RuleSet", Namespace);
if (ruleSet.Name != null)
writer.WriteAttributeString("name", ruleSet.Name);
WriteBoolAttribute("ignoreCase", ruleSet.IgnoreCase);
ruleSet.AcceptElements(this);
writer.WriteEndElement();
return null;
}
void WriteBoolAttribute(string attributeName, bool? value)
{
if (value != null) {
writer.WriteAttributeString(attributeName, value.Value ? "true" : "false");
}
}
void WriteRuleSetReference(XshdReference<XshdRuleSet> ruleSetReference)
{
if (ruleSetReference.ReferencedElement != null) {
if (ruleSetReference.ReferencedDefinition != null)
writer.WriteAttributeString("ruleSet", ruleSetReference.ReferencedDefinition + "/" + ruleSetReference.ReferencedElement);
else
writer.WriteAttributeString("ruleSet", ruleSetReference.ReferencedElement);
}
}
void WriteColorReference(XshdReference<XshdColor> color)
{
if (color.InlineElement != null) {
WriteColorAttributes(color.InlineElement);
} else if (color.ReferencedElement != null) {
if (color.ReferencedDefinition != null)
writer.WriteAttributeString("color", color.ReferencedDefinition + "/" + color.ReferencedElement);
else
writer.WriteAttributeString("color", color.ReferencedElement);
}
}
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Globalization", "CA1308:NormalizeStringsToUppercase", Justification = "The file format requires lowercase, and all possible values are English-only")]
void WriteColorAttributes(XshdColor color)
{
if (color.Foreground != null)
writer.WriteAttributeString("foreground", color.Foreground.ToString());
if (color.Background != null)
writer.WriteAttributeString("background", color.Background.ToString());
if (color.FontWeight != null)
writer.WriteAttributeString("fontWeight", V2Loader.FontWeightConverter.ConvertToInvariantString(color.FontWeight.Value).ToLowerInvariant());
if (color.FontStyle != null)
writer.WriteAttributeString("fontStyle", V2Loader.FontStyleConverter.ConvertToInvariantString(color.FontStyle.Value).ToLowerInvariant());
}
object IXshdVisitor.VisitColor(XshdColor color)
{
writer.WriteStartElement("Color", Namespace);
if (color.Name != null)
writer.WriteAttributeString("name", color.Name);
WriteColorAttributes(color);
if (color.ExampleText != null)
writer.WriteAttributeString("exampleText", color.ExampleText);
writer.WriteEndElement();
return null;
}
object IXshdVisitor.VisitKeywords(XshdKeywords keywords)
{
writer.WriteStartElement("Keywords", Namespace);
WriteColorReference(keywords.ColorReference);
foreach (string word in keywords.Words) {
writer.WriteElementString("Word", Namespace, word);
}
writer.WriteEndElement();
return null;
}
object IXshdVisitor.VisitSpan(XshdSpan span)
{
writer.WriteStartElement("Span", Namespace);
WriteColorReference(span.SpanColorReference);
if (span.BeginRegexType == XshdRegexType.Default && span.BeginRegex != null)
writer.WriteAttributeString("begin", span.BeginRegex);
if (span.EndRegexType == XshdRegexType.Default && span.EndRegex != null)
writer.WriteAttributeString("end", span.EndRegex);
WriteRuleSetReference(span.RuleSetReference);
if (span.Multiline)
writer.WriteAttributeString("multiline", "true");
if (span.BeginRegexType == XshdRegexType.IgnorePatternWhitespace)
WriteBeginEndElement("Begin", span.BeginRegex, span.BeginColorReference);
if (span.EndRegexType == XshdRegexType.IgnorePatternWhitespace)
WriteBeginEndElement("End", span.EndRegex, span.EndColorReference);
if (span.RuleSetReference.InlineElement != null)
span.RuleSetReference.InlineElement.AcceptVisitor(this);
writer.WriteEndElement();
return null;
}
void WriteBeginEndElement(string elementName, string regex, XshdReference<XshdColor> colorReference)
{
if (regex != null) {
writer.WriteStartElement(elementName, Namespace);
WriteColorReference(colorReference);
writer.WriteString(regex);
writer.WriteEndElement();
}
}
object IXshdVisitor.VisitImport(XshdImport import)
{
writer.WriteStartElement("Import", Namespace);
WriteRuleSetReference(import.RuleSetReference);
writer.WriteEndElement();
return null;
}
object IXshdVisitor.VisitRule(XshdRule rule)
{
writer.WriteStartElement("Rule", Namespace);
WriteColorReference(rule.ColorReference);
writer.WriteString(rule.Regex);
writer.WriteEndElement();
return null;
}
}
}
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