77 lines
3 KiB
C#
77 lines
3 KiB
C#
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// Copyright (c) .NET Foundation and contributors. All rights reserved.
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// Licensed under the MIT license. See LICENSE file in the project root for full license information.
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using System;
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using System.Globalization;
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namespace Microsoft.DotNet.Cli
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{
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internal static class UILanguageOverride
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{
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private const string DOTNET_CLI_UI_LANGUAGE = nameof(DOTNET_CLI_UI_LANGUAGE);
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private const string VSLANG = nameof(VSLANG);
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private const string PreferredUILang = nameof(PreferredUILang);
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public static void Setup()
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{
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CultureInfo language = GetOverriddenUILanguage();
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if (language == null)
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{
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return;
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}
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// Make the current process respect the override.
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CultureInfo.DefaultThreadCurrentUICulture = language;
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// Pass down the override to other processes that we start via appropriate environment variables
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// Do not override any environment variables that are already set as we do not want to clobber a more granular setting with our global setting.
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SetIfNotAlreadySet(DOTNET_CLI_UI_LANGUAGE, language.Name);
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SetIfNotAlreadySet(VSLANG, language.LCID); // for tools following VS guidelines to just work in CLI
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SetIfNotAlreadySet(PreferredUILang, language.Name); // for C#/VB targets that pass $(PreferredUILang) to compiler
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}
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private static CultureInfo GetOverriddenUILanguage()
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{
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// DOTNET_CLI_UI_LANGUAGE=<culture name> is the main way for users to customize the CLI's UI language.
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string dotnetCliLanguage = Environment.GetEnvironmentVariable(DOTNET_CLI_UI_LANGUAGE);
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if (dotnetCliLanguage != null)
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{
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try
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{
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return new CultureInfo(dotnetCliLanguage);
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}
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catch (CultureNotFoundException) { }
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}
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// VSLANG=<lcid> is set by VS and we respect that as well so that we will respect the VS
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// language preference if we're invoked by VS.
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string vsLang = Environment.GetEnvironmentVariable(VSLANG);
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if (vsLang != null && int.TryParse(VSLANG, out int vsLcid))
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{
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try
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{
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return new CultureInfo(vsLcid);
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}
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catch (ArgumentOutOfRangeException) { }
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catch (CultureNotFoundException) { }
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}
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return null;
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}
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private static void SetIfNotAlreadySet(string environmentVariableName, string value)
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{
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string currentValue = Environment.GetEnvironmentVariable(environmentVariableName);
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if (currentValue == null)
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{
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Environment.SetEnvironmentVariable(environmentVariableName, value);
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}
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}
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private static void SetIfNotAlreadySet(string environmentVariableName, int value)
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{
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SetIfNotAlreadySet(environmentVariableName, value.ToString());
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}
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}
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}
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