BaseResourcesBuildProvider.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Compilation / BaseResourcesBuildProvider.cs / 1 / BaseResourcesBuildProvider.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Compilation { 
 
using System;
using System.Resources; 
using System.Resources.Tools;
using System.Reflection;
using System.Globalization;
using System.Collections; 
using System.IO;
using System.Xml; 
using System.Xml.Schema; 
using System.CodeDom;
using System.CodeDom.Compiler; 
using System.Web.Configuration;
using System.Web.Hosting;
using System.Web.Compilation;
using System.Web.Util; 
using Util=System.Web.UI.Util;
 
/// Base class for BuildProviders that generate resources 
[BuildProviderAppliesTo(BuildProviderAppliesTo.Resources)]
internal abstract class BaseResourcesBuildProvider : BuildProvider { 

    internal const string DefaultResourcesNamespace = "Resources";

    // The generated namespace and type name 
    private string _ns;
    private string _typeName; 
 
    private string _cultureName;
    private bool _dontGenerateStronglyTypedClass; 

    internal void DontGenerateStronglyTypedClass() {
        _dontGenerateStronglyTypedClass = true;
    } 

    public override void GenerateCode(AssemblyBuilder assemblyBuilder) { 
 
        _cultureName = GetCultureName();
 
        if (!_dontGenerateStronglyTypedClass) {
            // Get the namespace and type name that we will use
            _ns = Util.GetNamespaceAndTypeNameFromVirtualPath(VirtualPathObject,
                (_cultureName == null) ? 1 : 2 /*chunksToIgnore*/, out _typeName); 

            // Always prepend the namespace with Resources. 
            if (_ns.Length == 0) 
                _ns = DefaultResourcesNamespace;
            else 
                _ns = DefaultResourcesNamespace + "." + _ns;
        }

        // Get an input stream for our virtual path, and get a resource reader from it 
        using (Stream inputStream = OpenStream()) {
            IResourceReader reader = GetResourceReader(inputStream); 
 
            try {
                GenerateResourceFile(assemblyBuilder, reader); 
            }
            catch (ArgumentException e) {
                // If the inner exception is Xml, throw that instead, as it contains more
                // useful info 
                if (e.InnerException != null &&
                    (e.InnerException is XmlException || e.InnerException is XmlSchemaException)) { 
                    throw e.InnerException; 
                }
 
                // Otherwise, so just rethrow
                throw;
            }
 
            // Skip the code part for satellite assemblies, or if dontGenerate is set
            if (_cultureName == null && !_dontGenerateStronglyTypedClass) 
                GenerateStronglyTypedClass(assemblyBuilder, reader); 
        }
    } 

    protected abstract IResourceReader GetResourceReader(Stream inputStream);

    private void GenerateResourceFile(AssemblyBuilder assemblyBuilder, IResourceReader reader) { 

        // Get the name of the generated .resource file 
        string resourceFileName; 
        if (_ns == null) {
            // In the case where we don't generate code, just name the resource file 
            // after the virtual file
            resourceFileName = UrlPath.GetFileNameWithoutExtension(VirtualPath) + ".resources";
        }
        else if (_cultureName == null) { 
            // Name the resource file after the generated class, since that's what the
            // generated class expects 
            resourceFileName = _ns + "." + _typeName + ".resources"; 
        }
        else { 
            // If it's a non-default resource, include the culture in the name
            resourceFileName = _ns + "." + _typeName + "." + _cultureName + ".resources";
        }
 
        // Make it lower case, since GetManifestResourceStream (which we use later on) is
        // case sensitive 
        resourceFileName = resourceFileName.ToLower(CultureInfo.InvariantCulture); 

        Stream outputStream; 

        try {
            outputStream = assemblyBuilder.CreateEmbeddedResource(this, resourceFileName);
        } 
        catch (ArgumentException) {
            // This throws an ArgumentException if the resource file name was already added. 
            // Catch the situation, and give a better error message (VSWhidbey 87110) 

            throw new HttpException(SR.GetString( 
                SR.Duplicate_Resource_File, VirtualPath));
        }

        // Create an output stream from the .resource file 
        using (outputStream) {
            using (IResourceWriter writer = new ResourceWriter(outputStream)) { 
 
                // Copy the resources
                foreach(DictionaryEntry de in reader) { 
                    writer.AddResource((string)de.Key, de.Value);
                }
            }
        } 
    }
 
    private void GenerateStronglyTypedClass(AssemblyBuilder assemblyBuilder, IResourceReader reader) { 

        // Copy the resources into an IDictionary 
        IDictionary resourceList;
        using (reader) {
            resourceList = GetResourceList(reader);
        } 

        // Generate a strongly typed class from the resources 
        CodeDomProvider provider = assemblyBuilder.CodeDomProvider; 
        string[] unmatchable;
        CodeCompileUnit ccu = StronglyTypedResourceBuilder.Create( 
            resourceList, _typeName, _ns,
            provider, false /*internalClass*/, out unmatchable);

        // Ignore the unmatchable items.  We just won't generate code for them, 
        // but they'll still be usable via the ResourceManager (VSWhidbey 248226)
 
// We decided to cut support for My.Resources (VSWhidbey 358088) 
#if OLD
        // generate a My.Resources.* override (VSWhidbey 251554) 
        CodeNamespace ns = new CodeNamespace();
        ns.Name = "My." + _ns;

        CodeTypeDeclaration type = new CodeTypeDeclaration(); 
        type.Name = _typeName;
        CodeTypeReference baseType = new CodeTypeReference(_ns + "." + _typeName); 
 
        // Need to use a global reference to avoid a conflict, since the classes have the same name
        baseType.Options = CodeTypeReferenceOptions.GlobalReference; 
        type.BaseTypes.Add(baseType);

        ns.Types.Add(type);
        ccu.Namespaces.Add(ns); 
#endif
 
        // Add the code compile unit to the compilation 
        assemblyBuilder.AddCodeCompileUnit(this, ccu);
    } 

    private IDictionary GetResourceList(IResourceReader reader) {

        // Read the resources into a dictionary. 
        IDictionary resourceList = new Hashtable(StringComparer.OrdinalIgnoreCase);
        foreach(DictionaryEntry de in reader) 
            resourceList.Add(de.Key, de.Value); 

        return resourceList; 
    }
}

}

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