Normalize newlines on copy/paste. Moved LineManager.NextDelimiter into NewLineFinder.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@3838 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Document/ISegment.cs

@@ -28,7 +28,7 @@ namespace ICSharpCode.AvalonEdit.Document
 	
 	/// <summary>
 	/// Represents a simple segment (Offset,Length pair) that is not automatically updated
-	/// on document changed.
+	/// on document changes.
 	/// </summary>
 	struct SimpleSegment : IEquatable<SimpleSegment>, ISegment
 	{

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Document/LineManager.cs

@@ -26,14 +26,14 @@ namespace ICSharpCode.AvalonEdit.Document
 		/// A copy of the line trackers. We need a copy so that line trackers may remove themselves
 		/// while being notified (used e.g. by WeakLineTracker)
 		/// </summary>
-		internal ILineTracker[] lineTracker;
+		internal ILineTracker[] lineTrackers;
 		
 		public LineManager(GapTextBuffer textBuffer, DocumentLineTree documentLineTree, TextDocument document)
 		{
 			this.document = document;
 			this.textBuffer = textBuffer;
 			this.documentLineTree = documentLineTree;
-			this.lineTracker = document.LineTracker.ToArray();
+			this.lineTrackers = document.LineTrackers.ToArray();
 		}
 		#endregion
 		
@@ -87,24 +87,24 @@ namespace ICSharpCode.AvalonEdit.Document
 		{
 			// keep the first document line
 			DocumentLine ls = documentLineTree.GetByNumber(1);
-			DelimiterSegment ds = NextDelimiter(text, 0);
+			SimpleSegment ds = NewLineFinder.NextNewLine(text, 0);
 			List<DocumentLine> lines = new List<DocumentLine>();
 			int lastDelimiterEnd = 0;
-			while (ds != null) {
+			while (ds != SimpleSegment.Invalid) {
 				ls.TotalLength = ds.Offset + ds.Length - lastDelimiterEnd;
 				ls.DelimiterLength = ds.Length;
 				lastDelimiterEnd = ds.Offset + ds.Length;
 				lines.Add(ls);
 				
 				ls = new DocumentLine(document);
-				ds = NextDelimiter(text, lastDelimiterEnd);
+				ds = NewLineFinder.NextNewLine(text, lastDelimiterEnd);
 			}
 			ls.ResetLine();
 			ls.TotalLength = text.Length - lastDelimiterEnd;
 			lines.Add(ls);
 			documentLineTree.RebuildTree(lines);
-			foreach (ILineTracker lt in lineTracker)
-				lt.RebuildDocument();
+			foreach (ILineTracker lineTracker in lineTrackers)
+				lineTracker.RebuildDocument();
 		}
 		#endregion
 		
@@ -168,7 +168,7 @@ namespace ICSharpCode.AvalonEdit.Document
 
 		void RemoveLine(DocumentLine lineToRemove)
 		{
-			foreach (ILineTracker lt in lineTracker)
+			foreach (ILineTracker lt in lineTrackers)
 				lt.BeforeRemoveLine(lineToRemove);
 			documentLineTree.RemoveLine(lineToRemove);
 //			foreach (ILineTracker lt in lineTracker)
@@ -197,8 +197,8 @@ namespace ICSharpCode.AvalonEdit.Document
 				line = SetLineLength(line, 1);
 			}
 			
-			DelimiterSegment ds = NextDelimiter(text, 0);
-			if (ds == null) {
+			SimpleSegment ds = NewLineFinder.NextNewLine(text, 0);
+			if (ds == SimpleSegment.Invalid) {
 				// no newline is being inserted, all text is inserted in a single line
 				//line.InsertedLinePart(offset - line.Offset, text.Length);
 				SetLineLength(line, line.TotalLength + text.Length);
@@ -207,7 +207,7 @@ namespace ICSharpCode.AvalonEdit.Document
 			//DocumentLine firstLine = line;
 			//firstLine.InsertedLinePart(offset - firstLine.Offset, ds.Offset);
 			int lastDelimiterEnd = 0;
-			while (ds != null) {
+			while (ds != SimpleSegment.Invalid) {
 				// split line segment at line delimiter
 				int lineBreakOffset = offset + ds.Offset + ds.Length;
 				lineOffset = line.Offset;
@@ -219,7 +219,7 @@ namespace ICSharpCode.AvalonEdit.Document
 				line = newLine;
 				lastDelimiterEnd = ds.Offset + ds.Length;
 				
-				ds = NextDelimiter(text, lastDelimiterEnd);
+				ds = NewLineFinder.NextNewLine(text, lastDelimiterEnd);
 			}
 			//firstLine.SplitTo(line);
 			// insert rest after last delimiter
@@ -232,7 +232,7 @@ namespace ICSharpCode.AvalonEdit.Document
 		DocumentLine InsertLineAfter(DocumentLine line, int length)
 		{
 			DocumentLine newLine = documentLineTree.InsertLineAfter(line, length);
-			foreach (ILineTracker lt in lineTracker)
+			foreach (ILineTracker lt in lineTrackers)
 				lt.LineInserted(line, newLine);
 			return newLine;
 		}
@@ -252,7 +252,7 @@ namespace ICSharpCode.AvalonEdit.Document
 //			deletedOrChangedLines.Add(line);
 			int delta = newTotalLength - line.TotalLength;
 			if (delta != 0) {
-				foreach (ILineTracker lt in lineTracker)
+				foreach (ILineTracker lt in lineTrackers)
 					lt.SetLineLength(line, newTotalLength);
 				line.TotalLength = newTotalLength;
 				DocumentLineTree.UpdateAfterChildrenChange(line);
@@ -284,38 +284,5 @@ namespace ICSharpCode.AvalonEdit.Document
 			return line;
 		}
 		#endregion
-		
-		#region Delimiter
-		sealed class DelimiterSegment
-		{
-			internal int Offset;
-			internal int Length;
-		}
-		
-		// always use the same DelimiterSegment object for the NextDelimiter
-		DelimiterSegment delimiterSegment = new DelimiterSegment();
-		
-		DelimiterSegment NextDelimiter(string text, int offset)
-		{
-			for (int i = offset; i < text.Length; i++) {
-				switch (text[i]) {
-					case '\r':
-						if (i + 1 < text.Length) {
-							if (text[i + 1] == '\n') {
-								delimiterSegment.Offset = i;
-								delimiterSegment.Length = 2;
-								return delimiterSegment;
-							}
-						}
-						goto case '\n';
-					case '\n':
-						delimiterSegment.Offset = i;
-						delimiterSegment.Length = 1;
-						return delimiterSegment;
-				}
-			}
-			return null;
-		}
-		#endregion
 	}
 }

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Document/NewLineFinder.cs

@@ -0,0 +1,71 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <author name="Daniel Grunwald"/>
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+using System.Diagnostics;
+using System.Text;
+
+namespace ICSharpCode.AvalonEdit.Document
+{
+	/// <summary>
+	/// Helper methods for finding new lines.
+	/// </summary>
+	static class NewLineFinder
+	{
+		/// <summary>
+		/// Gets the location of the next new line character, or SimpleSegment.Invalid
+		/// if none is found.
+		/// </summary>
+		public static SimpleSegment NextNewLine(string text, int offset)
+		{
+			for (int i = offset; i < text.Length; i++) {
+				switch (text[i]) {
+					case '\r':
+						if (i + 1 < text.Length) {
+							if (text[i + 1] == '\n') {
+								return new SimpleSegment(i, 2);
+							}
+						}
+						goto case '\n';
+					case '\n':
+						return new SimpleSegment(i, 1);
+				}
+			}
+			return SimpleSegment.Invalid;
+		}
+		
+		/// <summary>
+		/// Gets whether the specified string is a newline sequence.
+		/// </summary>
+		public static bool IsNewLine(string newLine)
+		{
+			return newLine == "\r\n" || newLine == "\n" || newLine == "\r";
+		}
+		
+		/// <summary>
+		/// Normalizes all new lines in <paramref name="input"/> to be <paramref name="newLine"/>.
+		/// </summary>
+		public static string NormalizeNewLines(string input, string newLine)
+		{
+			Debug.Assert(IsNewLine(newLine));
+			SimpleSegment ds = NextNewLine(input, 0);
+			if (ds == SimpleSegment.Invalid) // text does not contain any new lines
+				return input;
+			StringBuilder b = new StringBuilder(input.Length);
+			int lastEndOffset = 0;
+			do {
+				b.Append(input, lastEndOffset, ds.Offset - lastEndOffset);
+				b.Append(newLine);
+				lastEndOffset = ds.GetEndOffset();
+				ds = NextNewLine(input, lastEndOffset);
+			} while (ds != SimpleSegment.Invalid);
+			// remaining string (after last newline)
+			b.Append(input, lastEndOffset, input.Length - lastEndOffset);
+			return b.ToString();
+		}
+	}
+}

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Document/TextDocument.cs

@@ -74,8 +74,8 @@ namespace ICSharpCode.AvalonEdit.Document
 			//parserManager = new ParserManager(this);
 			lineTree = new DocumentLineTree(this);
 			lineManager = new LineManager(textBuffer, lineTree, this);
-			lineTracker.CollectionChanged += delegate { 
-				lineManager.lineTracker = lineTracker.ToArray();
+			lineTrackers.CollectionChanged += delegate { 
+				lineManager.lineTrackers = lineTrackers.ToArray();
 			};
 			
 			anchorTree = new TextAnchorTree(this);
@@ -445,15 +445,15 @@ namespace ICSharpCode.AvalonEdit.Document
 			return new TextLocation(line.LineNumber, offset - line.Offset + 1);
 		}
 		
-		readonly ObservableCollection<ILineTracker> lineTracker = new ObservableCollection<ILineTracker>();
+		readonly ObservableCollection<ILineTracker> lineTrackers = new ObservableCollection<ILineTracker>();
 		
 		/// <summary>
-		/// Gets the list of <see cref="ILineTracker"/> attached to this document.
+		/// Gets the list of <see cref="ILineTracker"/>s attached to this document.
 		/// </summary>
-		public IList<ILineTracker> LineTracker {
+		public IList<ILineTracker> LineTrackers {
 			get {
 				VerifyAccess();
-				return lineTracker;
+				return lineTrackers;
 			}
 		}
 		

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Document/WeakLineTracker.cs

@@ -22,7 +22,7 @@ namespace ICSharpCode.AvalonEdit.Document
 		
 		void Deregister()
 		{
-			textDocument.LineTracker.Remove(this);
+			textDocument.LineTrackers.Remove(this);
 		}
 		
 		public void BeforeRemoveLine(DocumentLine line)

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Gui/CaretNavigationCommandHandler.cs

@@ -44,7 +44,6 @@ namespace ICSharpCode.AvalonEdit.Gui
 			InputBindings.Add(new KeyBinding(command, key, modifiers));
 		}
 		
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1810:InitializeReferenceTypeStaticFieldsInline")]
 		static CaretNavigationCommandHandler()
 		{
 			const ModifierKeys None = ModifierKeys.None;

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Gui/EditingCommandHandler.cs

@@ -7,7 +7,6 @@
 
 using System;
 using System.Linq;
-using System.Diagnostics;
 using System.Windows;
 using System.Windows.Documents;
 using System.Windows.Input;
@@ -28,7 +27,6 @@ namespace ICSharpCode.AvalonEdit.Gui
 			InputBindings.Add(new KeyBinding(command, key, modifiers));
 		}
 		
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1810:InitializeReferenceTypeStaticFieldsInline")]
 		static EditingCommandHandler()
 		{
 			CommandBindings.Add(new CommandBinding(ApplicationCommands.Delete, OnDelete(ApplicationCommands.NotACommand), HasSomethingSelected));
@@ -198,7 +196,7 @@ namespace ICSharpCode.AvalonEdit.Gui
 		{
 			TextArea textArea = GetTextArea(target);
 			if (textArea != null && textArea.Document != null) {
-				Clipboard.SetText(textArea.Selection.GetText(textArea.Document));
+				CopySelectedText(textArea);
 				args.Handled = true;
 			}
 		}
@@ -207,13 +205,20 @@ namespace ICSharpCode.AvalonEdit.Gui
 		{
 			TextArea textArea = GetTextArea(target);
 			if (textArea != null && textArea.Document != null) {
-				Clipboard.SetText(textArea.Selection.GetText(textArea.Document));
+				CopySelectedText(textArea);
 				textArea.RemoveSelectedText();
 				textArea.Caret.BringCaretToView();
 				args.Handled = true;
 			}
 		}
 		
+		static void CopySelectedText(TextArea textArea)
+		{
+			string text = textArea.Selection.GetText(textArea.Document);
+			// ensure we use the appropriate newline sequence for the OS
+			Clipboard.SetText(NewLineFinder.NormalizeNewLines(text, Environment.NewLine));
+		}
+		
 		static void CanPaste(object target, CanExecuteRoutedEventArgs args)
 		{
 			TextArea textArea = GetTextArea(target);
@@ -228,8 +233,10 @@ namespace ICSharpCode.AvalonEdit.Gui
 		{
 			TextArea textArea = GetTextArea(target);
 			if (textArea != null && textArea.Document != null) {
-				// TODO: normalize newlines on paste
-				textArea.ReplaceSelectionWithText(Clipboard.GetText());
+				// convert text back to correct newlines for this document
+				string newLine = GetLineDelimiter(textArea.Document, textArea.Caret.Line);
+				string text = NewLineFinder.NormalizeNewLines(Clipboard.GetText(), newLine);
+				textArea.ReplaceSelectionWithText(text);
 				textArea.Caret.BringCaretToView();
 				args.Handled = true;
 			}

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Gui/HeightTree.cs

@@ -51,7 +51,7 @@ namespace ICSharpCode.AvalonEdit.Gui
 		{
 			this.document = document;
 			weakLineTracker = new WeakLineTracker(document, this);
-			document.LineTracker.Add(weakLineTracker);
+			document.LineTrackers.Add(weakLineTracker);
 			this.DefaultLineHeight = defaultLineHeight;
 			RebuildDocument();
 		}
@@ -59,7 +59,7 @@ namespace ICSharpCode.AvalonEdit.Gui
 		public void Dispose()
 		{
 			if (weakLineTracker != null)
-				document.LineTracker.Remove(weakLineTracker);
+				document.LineTrackers.Remove(weakLineTracker);
 			this.dict = null;
 			this.root = null;
 			this.weakLineTracker = null;

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Gui/LineNumberMargin.cs

@@ -23,7 +23,6 @@ namespace ICSharpCode.AvalonEdit.Gui
 	/// </summary>
 	public class LineNumberMargin : AbstractMargin, IWeakEventListener
 	{
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1810:InitializeReferenceTypeStaticFieldsInline")]
 		static LineNumberMargin()
 		{
 			DefaultStyleKeyProperty.OverrideMetadata(typeof(LineNumberMargin),
@@ -226,7 +225,7 @@ namespace ICSharpCode.AvalonEdit.Gui
 		/// <inheritdoc/>
 		protected override HitTestResult HitTestCore(PointHitTestParameters hitTestParameters)
 		{
-			// accept clicks even when clicking on the backgroudn
+			// accept clicks even when clicking on the background
 			return new PointHitTestResult(this, hitTestParameters.HitPoint);
 		}
 	}

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Gui/TextArea.cs

@@ -30,7 +30,6 @@ namespace ICSharpCode.AvalonEdit
 	public class TextArea : Control, IScrollInfo, IWeakEventListener
 	{
 		#region Constructor
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1810:InitializeReferenceTypeStaticFieldsInline")]
 		static TextArea()
 		{
 			DefaultStyleKeyProperty.OverrideMetadata(typeof(TextArea),

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Gui/TextEditor.cs

@@ -29,7 +29,6 @@ namespace ICSharpCode.AvalonEdit
 	[Localizability(LocalizationCategory.Text), ContentProperty("Text")]
 	public class TextEditor : Control
 	{
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1810:InitializeReferenceTypeStaticFieldsInline")]
 		static TextEditor()
 		{
 			DefaultStyleKeyProperty.OverrideMetadata(typeof(TextEditor),

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Gui/TextView.cs

@@ -36,7 +36,6 @@ namespace ICSharpCode.AvalonEdit.Gui
 	public class TextView : FrameworkElement, IScrollInfo, IWeakEventListener
 	{
 		#region Constructor
-		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1810:InitializeReferenceTypeStaticFieldsInline")]
 		static TextView()
 		{
 			ClipToBoundsProperty.OverrideMetadata(typeof(TextView), new FrameworkPropertyMetadata(true));
@@ -341,6 +340,7 @@ namespace ICSharpCode.AvalonEdit.Gui
 		/// or use the <see cref="EnsureVisualLines()"/> method to force creating the visual lines
 		/// when they are invalid.
 		/// </exception>
+		[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1065:DoNotRaiseExceptionsInUnexpectedLocations")]
 		public ReadOnlyCollection<VisualLine> VisualLines {
 			get {
 				if (visibleVisualLines == null)

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Highlighting/DocumentHighlighter.cs

@@ -39,7 +39,7 @@ namespace ICSharpCode.AvalonEdit.Highlighting
 				throw new ArgumentNullException("baseRuleSet");
 			this.document = document;
 			this.baseRuleSet = baseRuleSet;
-			document.LineTracker.Add(new WeakLineTracker(document, this));
+			document.LineTrackers.Add(new WeakLineTracker(document, this));
 			InvalidateHighlighting();
 		}
 		

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/ICSharpCode.AvalonEdit.csproj

@@ -18,7 +18,7 @@
     <DelaySign>False</DelaySign>
     <AssemblyOriginatorKeyMode>File</AssemblyOriginatorKeyMode>
     <RunCodeAnalysis>False</RunCodeAnalysis>
-    <CodeAnalysisRules>-Microsoft.Design#CA1020;-Microsoft.Design#CA1033</CodeAnalysisRules>
+    <CodeAnalysisRules>-Microsoft.Design#CA1020;-Microsoft.Design#CA1033;-Microsoft.Performance#CA1810</CodeAnalysisRules>
     <OutputPath>..\..\..\..\bin\</OutputPath>
     <DocumentationFile>..\..\..\..\bin\ICSharpCode.AvalonEdit.xml</DocumentationFile>
   </PropertyGroup>
@@ -82,6 +82,7 @@
     <Compile Include="Document\LineNode.cs">
       <DependentUpon>DocumentLine.cs</DependentUpon>
     </Compile>
+    <Compile Include="Document\NewLineFinder.cs" />
     <Compile Include="Document\TextDocumentWeakEventManager.cs">
       <DependentUpon>TextDocument.cs</DependentUpon>
     </Compile>