RedistVersionInfo.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / CompMod / System / CodeDOM / Compiler / RedistVersionInfo.cs / 1305376 / RedistVersionInfo.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//
// [....]
//     Copyright (c) Microsoft Corporation.  All rights reserved. 
// 
//----------------------------------------------------------------------------- 
 
namespace System.CodeDom.Compiler {
    using System; 
    using System.Diagnostics;
    using System.IO;
    using System.CodeDom.Compiler;
    using System.Configuration; 
    using System.Collections.Generic;
 
    using Microsoft.Win32; 

    // The default compiler is the one corresponding to the current-running version of the runtime. 
    // Customers can choose to use a different one by setting a provider option.
    internal static class RedistVersionInfo {

        // Version identifier added for Dev10.  Takes the full path, doesn't depend on registry key 
        internal const String DirectoryPath = "CompilerDirectoryPath";  // location
 
        // Version identifier added for Orcas.  Depends on registry key. 
        internal const String NameTag = "CompilerVersion";    // name of the tag for specifying the version
 
        internal const String DefaultVersion = InPlaceVersion;      // should match one of the versions below
        internal const String InPlaceVersion = "v4.0";        // Default
        internal const String RedistVersion  = "v3.5";        // May change with servicing
        internal const String RedistVersion20= "v2.0"; 

        private const string MSBuildToolsPath = "MSBuildToolsPath"; 
        private const string dotNetFrameworkRegistryPath = "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\MSBuild\\ToolsVersions\\"; 

        public static string GetCompilerPath(IDictionary provOptions, string compilerExecutable) { 

            // Get the location of the runtime, the usual answer
            string compPath = Executor.GetRuntimeInstallDirectory();
 
            // if provOptions is provided check to see if it alters what version we should bind to.
            // provOptions can be null if someone does new VB/CSCodeProvider(), in which case 
            // they get the default behavior. 
            if (provOptions != null) {
 
                string directoryPath;
                bool directoryPathPresent = provOptions.TryGetValue(DirectoryPath, out directoryPath);
                string versionVal;
                bool versionValPresent = provOptions.TryGetValue(NameTag, out versionVal); 

                if(directoryPathPresent && versionValPresent) 
                { 
                    throw new InvalidOperationException(SR.GetString(SR.Cannot_Specify_Both_Compiler_Path_And_Version, DirectoryPath, NameTag));
                } 

                // If they have an explicit path, use it.  Otherwise, look it up from the registry.
                if (directoryPathPresent) {
                    return directoryPath; 
                }
 
                // If they have specified a version number in providerOptions, use it. 
                if (versionValPresent) {
                    switch (versionVal) { 

                        case RedistVersionInfo.InPlaceVersion:
                            // Use the RuntimeInstallDirectory, already obtained
                            break; 

                        case RedistVersionInfo.RedistVersion: 
                            // lock to the Orcas version, if it's not available throw (we'll throw at compile time) 
                            compPath = GetCompilerPathFromRegistry(versionVal);
                            break; 

                        case RedistVersionInfo.RedistVersion20:
                            //look up 2.0 compiler path from registry
                            compPath = GetCompilerPathFromRegistry(versionVal); 
                            break;
 
                        default: 
                            compPath = null;
                            break; 
                    }
                }
            }
 
            if (compPath == null)
                throw new InvalidOperationException(SR.GetString(SR.CompilerNotFound, compilerExecutable)); 
 
            return compPath;
        } 

        /// this method returns the location of the Orcas compilers, but will return whatever
        /// version is requested via the COMPlus_ environment variables first
        private static string GetCompilerPathFromRegistry(String versionVal) { 
            string dir = null;
 
            // if this is running in a private running environment such as Razzle, we would use the path 
            // based on the environment variables: COMPLUS_InstallRoot and COMPLUS_Version.
            string comPlus_InstallRoot = Environment.GetEnvironmentVariable("COMPLUS_InstallRoot"); 
            string comPlus_Version = Environment.GetEnvironmentVariable("COMPLUS_Version");

            if (!string.IsNullOrEmpty(comPlus_InstallRoot) && !string.IsNullOrEmpty(comPlus_Version))
            { 
                dir = Path.Combine(comPlus_InstallRoot, comPlus_Version);
                if (Directory.Exists(dir)) 
                    return dir; 
            }
 
            String versionWithoutV = versionVal.Substring(1);
            String registryPath = dotNetFrameworkRegistryPath + versionWithoutV;
            dir = Registry.GetValue(registryPath, MSBuildToolsPath, null) as string;
 
            if (dir != null && Directory.Exists(dir)) {
                return dir; 
            } 
            return null;
        } 
    }
}


// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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