LocalizationParserHooks.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / BuildTasks / MS / Internal / Localization / LocalizationParserHooks.cs / 1305600 / LocalizationParserHooks.cs
                        
                        
                            //---------------------------------------------------------------------------- 
//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
// Description: LocalizationParserHooks. 
//
// History: 
//  06/16/2005 garyyang - created 
//
//--------------------------------------------------------------------------- 

using System;
using System.Collections;
using System.IO; 
using System.Xml;
using System.Text; 
 
using MS.Internal.Globalization;
using MS.Internal.Markup; 
using MS.Internal.Tasks;

namespace MS.Internal
{ 
    internal sealed class LocalizationParserHooks : ParserHooks
    { 
        private MarkupCompiler                  _compiler; 
        private ArrayList                       _commentList;
        private LocalizationComment             _currentComment; 
        private LocalizationDirectivesToLocFile _directivesToFile;
        private bool                            _isSecondPass;

        internal LocalizationParserHooks( 
            MarkupCompiler                  compiler ,
            LocalizationDirectivesToLocFile directivesToFile, 
            bool                            isSecondPass 
            )
        { 
            _compiler = compiler;
            _directivesToFile = directivesToFile;
            _isSecondPass = isSecondPass;
 
            // The arrray list holds all the comments collected while parsing Xaml.
            _commentList = new ArrayList(); 
 
            // It is the comments current being processed.
            _currentComment = new LocalizationComment(); 
        }

        internal override ParserAction LoadNode(XamlNode tokenNode)
        { 
            switch (tokenNode.TokenType)
            { 
                case XamlNodeType.DocumentStart : 
                {
                    // A single ParserHooks might be used to parse multiple bamls. 
                    // We need to clear the comments list at the begining of each baml.
                    _commentList.Clear();
                    _currentComment = new LocalizationComment();
                    return ParserAction.Normal; 
                }
                case XamlNodeType.DefAttribute : 
                { 
                    XamlDefAttributeNode node = (XamlDefAttributeNode) tokenNode;
                    if (node.Name == XamlReaderHelper.DefinitionUid) 
                    {
                        _currentComment.Uid = node.Value;
                    }
 
                    return ParserAction.Normal;
                } 
                case XamlNodeType.Property : 
                {
                    XamlPropertyNode node = (XamlPropertyNode) tokenNode; 

                    // When this parer hook is invoked, comments is always output to a seperate file.
                    if (LocComments.IsLocCommentsProperty(node.TypeFullName, node.PropName))
                    { 
                        // try parse the value. Exception will be thrown if not valid.
                        LocComments.ParsePropertyComments(node.Value); 
                        _currentComment.Comments = node.Value; 
                        return ParserAction.Skip;  // skips outputing this node to baml
                    } 

                    if (  _directivesToFile == LocalizationDirectivesToLocFile.All
                       && LocComments.IsLocLocalizabilityProperty(node.TypeFullName, node.PropName))
                    { 
                        // try parse the value. Exception will be thrown if not valid.
                        LocComments.ParsePropertyLocalizabilityAttributes(node.Value); 
                        _currentComment.Attributes = node.Value; 
                        return ParserAction.Skip;  // skips outputing this node to baml
                    } 

                    return ParserAction.Normal;
                }
                case XamlNodeType.EndAttributes : 
                {
                    FlushCommentToList(ref _currentComment); 
                    return ParserAction.Normal; 
                }
                case XamlNodeType.DocumentEnd : 
                {
                    //
                    // When reaching document end, we output all the comments we have collected
                    // so far into a localization comment file. If the parsing was aborted in 
                    // MarkupCompilePass1, we would not out the incomplete set of comments because
                    // it will not reach document end. 
                    // 

                    if (_commentList.Count > 0) 
                    {
                        string absoluteOutputPath = _compiler.TargetPath + _compiler.SourceFileInfo.RelativeSourceFilePath + SharedStrings.LocExtension;
                        MemoryStream memStream = new MemoryStream();
 
                        // TaskFileService.WriteFile adds BOM for UTF8 Encoding, thus don't add here
                        // when creating XmlTextWriter. 
                        using (XmlTextWriter writer = new XmlTextWriter(memStream, new UTF8Encoding(false))) 
                        {
                            // output XML for each piece of comment 
                            writer.Formatting = Formatting.Indented;
                            writer.WriteStartElement(LocComments.LocResourcesElement);
                            writer.WriteAttributeString(LocComments.LocFileNameAttribute, _compiler.SourceFileInfo.RelativeSourceFilePath);
 
                            foreach (LocalizationComment comment in _commentList)
                            { 
                                writer.WriteStartElement(LocComments.LocCommentsElement); 
                                writer.WriteAttributeString(LocComments.LocCommentIDAttribute, comment.Uid);
 
                                if (comment.Attributes != null)
                                {
                                    writer.WriteAttributeString(LocComments.LocLocalizabilityAttribute, comment.Attributes);
                                } 

                                if (comment.Comments != null) 
                                { 
                                    writer.WriteAttributeString(LocComments.LocCommentsAttribute, comment.Comments);
                                } 

                                writer.WriteEndElement();
                            }
                            writer.WriteEndElement(); 

                            writer.Flush(); 
                            _compiler.TaskFileService.WriteFile(memStream.ToArray(), absoluteOutputPath); 
                        }
                    } 

                    return ParserAction.Normal;
                }
                default: 
                {
                    return ParserAction.Normal; 
                } 
            }
        } 

        /// 
        /// Add the existing comment into the cached list and clear the state for the
        /// next incoming comment. Comments are only collected in pass1. The method is no-op 
        /// in pass2.
        ///  
        private void FlushCommentToList(ref LocalizationComment comment) 
        {
            if (_isSecondPass) return; 

            if (  _currentComment.Uid != null
               && (  _currentComment.Attributes != null
                  || _currentComment.Comments != null 
                  )
               ) 
            { 
                // add the comments into the list and reset
                _commentList.Add(_currentComment); 
                _currentComment = new LocalizationComment();
            }
            else
            { 
                // clear all properties
                _currentComment.Uid = _currentComment.Attributes = _currentComment.Comments = null; 
            } 
        }
 
        private class LocalizationComment
        {
            internal string Uid;
            internal string Comments; 
            internal string Attributes;
        } 
    } 
}
 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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LocalizationParserHooks.cs source code in C# .NET

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