Fixed forum-15062: TextEditor changes encoding of UTF-16 files to UTF-8.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@2682 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/BackendBindings/CSharpBinding/Project/Src/FormattingStrategy/DocumentAccessor.cs

@@ -137,7 +137,7 @@ namespace CSharpBinding.FormattingStrategy
 		{
 			this.filename = filename;
 			f = new FileStream(filename, FileMode.Open, FileAccess.Read);
-			r = ICSharpCode.TextEditor.Util.FileReader.OpenStream(f, ParserService.DefaultFileEncoding, ParserService.DefaultFileEncoding);
+			r = ICSharpCode.TextEditor.Util.FileReader.OpenStream(f, ParserService.DefaultFileEncoding);
 		}
 		
 		int num = 0;

src/AddIns/DisplayBindings/WorkflowDesigner/Project/Src/Loaders/XomlDesignerLoader.cs

@@ -61,7 +61,7 @@ namespace WorkflowDesigner.Loaders
 		public XomlDesignerLoader(IViewContent viewContent, Stream stream) : this(viewContent)
 		{
 			Encoding encoding = ICSharpCode.SharpDevelop.ParserService.DefaultFileEncoding;
-			xoml = ICSharpCode.TextEditor.Util.FileReader.ReadFileContent(stream, ref encoding, encoding);
+			xoml = ICSharpCode.TextEditor.Util.FileReader.ReadFileContent(stream, ref encoding);
 		}
 
 		public string Xoml {

src/Libraries/ICSharpCode.TextEditor/Project/Src/Document/DocumentFactory.cs

@@ -51,8 +51,7 @@ namespace ICSharpCode.TextEditor.Document
 		public IDocument CreateFromFile(string fileName)
 		{
 			IDocument document = CreateDocument();
-			Encoding encoding = Encoding.Default;
-			document.TextContent = Util.FileReader.ReadFileContent(fileName, ref encoding, encoding);
+			document.TextContent = Util.FileReader.ReadFileContent(fileName, Encoding.Default);
 			return document;
 		}
 	}

src/Libraries/ICSharpCode.TextEditor/Project/Src/Document/TextBufferStrategy/StringTextBufferStrategy.cs

@@ -72,18 +72,14 @@ namespace ICSharpCode.TextEditor.Document
 		{
 		}
 		
-		StringTextBufferStrategy(string fileName)
-		{
-			Encoding encoding = Encoding.Default;
-			SetContent(Util.FileReader.ReadFileContent(fileName, ref encoding, encoding));
-		}
-		
 		public static ITextBufferStrategy CreateTextBufferFromFile(string fileName)
 		{
 			if (!File.Exists(fileName)) {
 				throw new System.IO.FileNotFoundException(fileName);
 			}
-			return new StringTextBufferStrategy(fileName);
+			StringTextBufferStrategy s = new StringTextBufferStrategy();
+			s.SetContent(Util.FileReader.ReadFileContent(fileName, Encoding.Default));
+			return s;
 		}
 	}
 }

src/Libraries/ICSharpCode.TextEditor/Project/Src/Gui/TextEditorControlBase.cs

@@ -654,7 +654,7 @@ namespace ICSharpCode.TextEditor
 			
 			if (autodetectEncoding) {
 				Encoding encoding = this.Encoding;
-				Document.TextContent = Util.FileReader.ReadFileContent(stream, ref encoding, this.TextEditorProperties.Encoding);
+				Document.TextContent = Util.FileReader.ReadFileContent(stream, ref encoding);
 				this.Encoding = encoding;
 			} else {
 				using (StreamReader reader = new StreamReader(fileName, this.Encoding)) {

src/Libraries/ICSharpCode.TextEditor/Project/Src/Util/FileReader.cs

@@ -23,30 +23,28 @@ namespace ICSharpCode.TextEditor.Util
 			return codepage == 65001 || codepage == 65000 || codepage == 1200 || codepage == 1201;
 		}
 		
-		public static string ReadFileContent(Stream fs, ref Encoding encoding, Encoding defaultEncoding)
+		public static string ReadFileContent(Stream fs, ref Encoding encoding)
 		{
-			using (StreamReader reader = OpenStream(fs, encoding, defaultEncoding)) {
+			using (StreamReader reader = OpenStream(fs, encoding)) {
+				reader.Peek();
 				encoding = reader.CurrentEncoding;
 				return reader.ReadToEnd();
 			}
 		}
 		
-		public static string ReadFileContent(string fileName, ref Encoding encoding, Encoding defaultEncoding)
+		public static string ReadFileContent(string fileName, Encoding encoding)
 		{
 			using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) {
-				using (StreamReader reader = OpenStream(fs, encoding, defaultEncoding)) {
-					encoding = reader.CurrentEncoding;
-					return reader.ReadToEnd();
-				}
+				return ReadFileContent(fs, ref encoding);
 			}
 		}
 		
-		public static StreamReader OpenStream(Stream fs, Encoding suggestedEncoding, Encoding defaultEncoding)
+		public static StreamReader OpenStream(Stream fs, Encoding defaultEncoding)
 		{
 			if (fs == null)
 				throw new ArgumentNullException("fs");
 			
-			if (fs.Length > 3) {
+			if (fs.Length >= 2) {
 				// the autodetection of StreamReader is not capable of detecting the difference
 				// between ISO-8859-1 and UTF-8 without BOM.
 				int firstByte = fs.ReadByte();
@@ -63,8 +61,8 @@ namespace ICSharpCode.TextEditor.Util
 						return AutoDetect(fs, (byte)firstByte, (byte)secondByte, defaultEncoding);
 				}
 			} else {
-				if (suggestedEncoding != null) {
-					return new StreamReader(fs, suggestedEncoding);
+				if (defaultEncoding != null) {
+					return new StreamReader(fs, defaultEncoding);
 				} else {
 					return new StreamReader(fs);
 				}

src/Main/Base/Project/Src/Project/Converter/PrjxToSolutionProject.cs

@@ -282,11 +282,10 @@ namespace ICSharpCode.SharpDevelop.Project.Converter
 			
 			conversion.basePath = Path.GetDirectoryName(fileName);
 			
-			Encoding tmp = Encoding.Default;
-			string content = ICSharpCode.TextEditor.Util.FileReader.ReadFileContent(old, ref tmp, tmp);
+			string content = ICSharpCode.TextEditor.Util.FileReader.ReadFileContent(old, Encoding.Default);
 			RunConverter(new StringReader(content), fileName, "vsnet2msbuild.xsl", conversion);
 			if (File.Exists(oldUserFile)) {
-				content = ICSharpCode.TextEditor.Util.FileReader.ReadFileContent(oldUserFile, ref tmp, tmp);
+				content = ICSharpCode.TextEditor.Util.FileReader.ReadFileContent(oldUserFile, Encoding.Default);
 				RunConverter(new StringReader(content), userFile, "vsnet2msbuild_user.xsl", conversion);
 			}
 		}

src/Main/Base/Project/Src/Services/ParserService/ParserService.cs

@@ -623,8 +623,7 @@ namespace ICSharpCode.SharpDevelop
 			//	return res;
 			
 			// load file
-			Encoding tmp = DefaultFileEncoding;
-			return ICSharpCode.TextEditor.Util.FileReader.ReadFileContent(fileName, ref tmp, tmp);
+			return ICSharpCode.TextEditor.Util.FileReader.ReadFileContent(fileName, DefaultFileEncoding);
 		}
 		
 		public static Encoding DefaultFileEncoding {

src/Main/Base/Project/Src/Services/ProjectService/ParseableFileContentEnumerator.cs

@@ -84,8 +84,7 @@ namespace ICSharpCode.SharpDevelop.Project
 			// While one file is parsed, the next is already loaded from disk.
 			
 			// load file
-			Encoding tmp = defaultEncoding;
-			return ICSharpCode.TextEditor.Util.FileReader.ReadFileContent(fileName, ref tmp, defaultEncoding);
+			return ICSharpCode.TextEditor.Util.FileReader.ReadFileContent(fileName, defaultEncoding);
 		}
 		
 		ProjectItem nextItem;