444 lines
12 KiB
C#
444 lines
12 KiB
C#
// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// Copyright (c) 2004-2005 Novell, Inc.
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//
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// Authors:
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// Duncan Mak duncan@ximian.com
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// Nick Drochak ndrochak@gol.com
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// Paolo Molaro lupus@ximian.com
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// Peter Bartok pbartok@novell.com
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// Gert Driesen drieseng@users.sourceforge.net
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// Olivier Dufour olivier.duff@gmail.com
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// Gary Barnett gary.barnett.mono@gmail.com
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using System;
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using System.Collections;
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using System.Collections.Specialized;
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using System.ComponentModel;
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using System.ComponentModel.Design;
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using System.Globalization;
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using System.IO;
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using System.Resources;
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using System.Runtime.Serialization.Formatters.Binary;
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using System.Xml;
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using System.Reflection;
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using System.Drawing;
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using System.Runtime.Serialization;
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namespace System.Resources
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{
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#if INSIDE_SYSTEM_WEB
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internal
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#else
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public
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#endif
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class ResXResourceReader : IResourceReader, IDisposable
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{
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#region Local Variables
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private string fileName;
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private Stream stream;
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private TextReader reader;
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private Hashtable hasht;
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private ITypeResolutionService typeresolver;
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private XmlTextReader xmlReader;
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private string basepath;
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private bool useResXDataNodes;
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private AssemblyName [] assemblyNames;
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private Hashtable hashtm;
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#endregion // Local Variables
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#region Constructors & Destructor
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public ResXResourceReader (Stream stream)
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{
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if (stream == null)
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throw new ArgumentNullException ("stream");
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if (!stream.CanRead)
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throw new ArgumentException ("Stream was not readable.");
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this.stream = stream;
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}
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public ResXResourceReader (Stream stream, ITypeResolutionService typeResolver)
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: this (stream)
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{
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this.typeresolver = typeResolver;
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}
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public ResXResourceReader (string fileName)
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{
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this.fileName = fileName;
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}
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public ResXResourceReader (string fileName, ITypeResolutionService typeResolver)
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: this (fileName)
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{
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this.typeresolver = typeResolver;
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}
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public ResXResourceReader (TextReader reader)
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{
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this.reader = reader;
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}
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public ResXResourceReader (TextReader reader, ITypeResolutionService typeResolver)
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: this (reader)
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{
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this.typeresolver = typeResolver;
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}
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public ResXResourceReader (Stream stream, AssemblyName [] assemblyNames)
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: this (stream)
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{
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this.assemblyNames = assemblyNames;
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}
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public ResXResourceReader (string fileName, AssemblyName [] assemblyNames)
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: this (fileName)
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{
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this.assemblyNames = assemblyNames;
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}
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public ResXResourceReader (TextReader reader, AssemblyName [] assemblyNames)
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: this (reader)
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{
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this.assemblyNames = assemblyNames;
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}
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~ResXResourceReader ()
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{
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Dispose (false);
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}
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#endregion // Constructors & Destructor
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public string BasePath {
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get { return basepath; }
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set { basepath = value; }
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}
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public bool UseResXDataNodes {
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get { return useResXDataNodes; }
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set {
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if (xmlReader != null)
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throw new InvalidOperationException ();
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useResXDataNodes = value;
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}
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}
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#region Private Methods
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private void LoadData ()
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{
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hasht = new Hashtable ();
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hashtm = new Hashtable ();
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if (fileName != null) {
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stream = File.OpenRead (fileName);
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}
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try {
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xmlReader = null;
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if (stream != null) {
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xmlReader = new XmlTextReader (stream);
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} else if (reader != null) {
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xmlReader = new XmlTextReader (reader);
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}
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if (xmlReader == null) {
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throw new InvalidOperationException ("ResourceReader is closed.");
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}
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xmlReader.WhitespaceHandling = WhitespaceHandling.None;
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ResXHeader header = new ResXHeader ();
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try {
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while (xmlReader.Read ()) {
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if (xmlReader.NodeType != XmlNodeType.Element)
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continue;
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switch (xmlReader.LocalName) {
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case "resheader":
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ParseHeaderNode (header);
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break;
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case "data":
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ParseDataNode (false);
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break;
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case "metadata":
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ParseDataNode (true);
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break;
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}
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}
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} catch (XmlException ex) {
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throw new ArgumentException ("Invalid ResX input.", ex);
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} catch (SerializationException ex) {
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throw ex;
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} catch (TargetInvocationException ex) {
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throw ex;
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} catch (Exception ex) {
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XmlException xex = new XmlException (ex.Message, ex,
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xmlReader.LineNumber, xmlReader.LinePosition);
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throw new ArgumentException ("Invalid ResX input.", xex);
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}
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header.Verify ();
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} finally {
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if (fileName != null) {
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stream.Close ();
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stream = null;
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}
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xmlReader = null;
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}
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}
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private void ParseHeaderNode (ResXHeader header)
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{
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string v = GetAttribute ("name");
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if (v == null)
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return;
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if (String.Compare (v, "resmimetype", true) == 0) {
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header.ResMimeType = GetHeaderValue ();
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} else if (String.Compare (v, "reader", true) == 0) {
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header.Reader = GetHeaderValue ();
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} else if (String.Compare (v, "version", true) == 0) {
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header.Version = GetHeaderValue ();
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} else if (String.Compare (v, "writer", true) == 0) {
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header.Writer = GetHeaderValue ();
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}
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}
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private string GetHeaderValue ()
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{
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string value = null;
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xmlReader.ReadStartElement ();
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if (xmlReader.NodeType == XmlNodeType.Element) {
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value = xmlReader.ReadElementString ();
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} else {
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value = xmlReader.Value.Trim ();
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}
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return value;
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}
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private string GetAttribute (string name)
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{
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if (!xmlReader.HasAttributes)
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return null;
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for (int i = 0; i < xmlReader.AttributeCount; i++) {
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xmlReader.MoveToAttribute (i);
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if (String.Compare (xmlReader.Name, name, true) == 0) {
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string v = xmlReader.Value;
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xmlReader.MoveToElement ();
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return v;
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}
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}
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xmlReader.MoveToElement ();
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return null;
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}
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private string GetDataValue (bool meta, out string comment)
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{
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string value = null;
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comment = null;
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while (xmlReader.Read ()) {
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if (xmlReader.NodeType == XmlNodeType.EndElement && xmlReader.LocalName == (meta ? "metadata" : "data"))
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break;
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if (xmlReader.NodeType == XmlNodeType.Element) {
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if (xmlReader.Name.Equals ("value")) {
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xmlReader.WhitespaceHandling = WhitespaceHandling.Significant;
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value = xmlReader.ReadString ();
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xmlReader.WhitespaceHandling = WhitespaceHandling.None;
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} else if (xmlReader.Name.Equals ("comment")) {
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xmlReader.WhitespaceHandling = WhitespaceHandling.Significant;
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comment = xmlReader.ReadString ();
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xmlReader.WhitespaceHandling = WhitespaceHandling.None;
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if (xmlReader.NodeType == XmlNodeType.EndElement && xmlReader.LocalName == (meta ? "metadata" : "data"))
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break;
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}
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}
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else
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value = xmlReader.Value.Trim ();
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}
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return value;
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}
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private void ParseDataNode (bool meta)
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{
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Hashtable hashtable = ((meta && ! useResXDataNodes) ? hashtm : hasht);
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Point pos = new Point (xmlReader.LineNumber, xmlReader.LinePosition);
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string name = GetAttribute ("name");
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string type_name = GetAttribute ("type");
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string mime_type = GetAttribute ("mimetype");
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string comment = null;
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string value = GetDataValue (meta, out comment);
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ResXDataNode node = new ResXDataNode (name, mime_type, type_name, value, comment, pos, BasePath);
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if (useResXDataNodes) {
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hashtable [name] = node;
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return;
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}
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if (name == null)
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throw new ArgumentException (string.Format (CultureInfo.CurrentCulture,
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"Could not find a name for a resource. The resource value was '{0}'.",
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node.GetValue ((AssemblyName []) null).ToString()));
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// useResXDataNodes is false, add to dictionary of values
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if (assemblyNames != null) {
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try {
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hashtable [name] = node.GetValue (assemblyNames);
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} catch (TypeLoadException ex) {
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// different error messages depending on type of resource, hacky solution
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if (node.handler is TypeConverterFromResXHandler)
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hashtable [name] = null;
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else
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throw ex;
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}
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} else { // there is a typeresolver or its null
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try {
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hashtable [name] = node.GetValue (typeresolver);
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} catch (TypeLoadException ex) {
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if (node.handler is TypeConverterFromResXHandler)
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hashtable [name] = null;
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else
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throw ex;
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}
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}
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}
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#endregion // Private Methods
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#region Public Methods
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public void Close ()
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{
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if (reader != null) {
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reader.Close ();
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reader = null;
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}
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}
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public IDictionaryEnumerator GetEnumerator ()
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{
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if (hasht == null) {
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LoadData ();
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}
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return hasht.GetEnumerator ();
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}
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IEnumerator IEnumerable.GetEnumerator ()
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{
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return ((IResourceReader) this).GetEnumerator ();
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}
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void IDisposable.Dispose ()
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{
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Dispose (true);
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GC.SuppressFinalize (this);
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}
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protected virtual void Dispose (bool disposing)
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{
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if (disposing) {
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Close ();
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}
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}
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public static ResXResourceReader FromFileContents (string fileContents)
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{
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return new ResXResourceReader (new StringReader (fileContents));
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}
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public static ResXResourceReader FromFileContents (string fileContents, ITypeResolutionService typeResolver)
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{
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return new ResXResourceReader (new StringReader (fileContents), typeResolver);
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}
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public static ResXResourceReader FromFileContents (string fileContents, AssemblyName [] assemblyNames)
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{
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return new ResXResourceReader (new StringReader (fileContents), assemblyNames);
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}
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public IDictionaryEnumerator GetMetadataEnumerator ()
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{
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if (hashtm == null)
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LoadData ();
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return hashtm.GetEnumerator ();
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}
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#endregion // Public Methods
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#region Internal Classes
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private class ResXHeader
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{
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private string resMimeType;
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private string reader;
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private string version;
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private string writer;
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public string ResMimeType
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{
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get { return resMimeType; }
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set { resMimeType = value; }
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}
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public string Reader {
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get { return reader; }
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set { reader = value; }
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}
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public string Version {
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get { return version; }
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set { version = value; }
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}
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public string Writer {
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get { return writer; }
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set { writer = value; }
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}
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public void Verify ()
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{
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if (!IsValid)
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throw new ArgumentException ("Invalid ResX input. Could "
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+ "not find valid \"resheader\" tags for the ResX "
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+ "reader & writer type names.");
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}
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public bool IsValid {
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get {
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if (string.Compare (ResMimeType, ResXResourceWriter.ResMimeType) != 0)
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return false;
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if (Reader == null || Writer == null)
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return false;
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string readerType = Reader.Split (',') [0].Trim ();
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if (readerType != typeof (ResXResourceReader).FullName)
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return false;
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string writerType = Writer.Split (',') [0].Trim ();
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if (writerType != typeof (ResXResourceWriter).FullName)
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return false;
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return true;
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}
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}
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}
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#endregion
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}
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}
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