/// <summary>
/// Determines whether the specified version is from a "legacy" .NET CLI.
/// If true, this .NET CLI supports project.json development; otherwise, it supports .csproj development.
/// </summary>
public bool IsLegacy(DotNetVersion dotnetVersion)
{
if (dotnetVersion.HasError)
{
return(false);
}
var version = dotnetVersion.Version;
if (version.Major < 1)
{
return(true);
}
if (version.Major == 1 &&
version.Minor == 0 &&
version.Patch == 0)
{
if (version.PreReleaseLabel.StartsWith("preview1") ||
version.PreReleaseLabel.StartsWith("preview2"))
{
return(true);
}
}
return(false);
}
public DotNetVersion GetVersion(string workingDirectory = null)
{
// Ensure that we set the DOTNET_CLI_UI_LANGUAGE environment variable to "en-US" before
// running 'dotnet --version'. Otherwise, we may get localized results.
var originalValue = Environment.GetEnvironmentVariable(DOTNET_CLI_UI_LANGUAGE);
Environment.SetEnvironmentVariable(DOTNET_CLI_UI_LANGUAGE, "en-US");
try
{
Process process;
try
{
process = Start("--version", workingDirectory);
}
catch
{
return(DotNetVersion.FailedToStartError);
}
if (process.HasExited)
{
return(DotNetVersion.FailedToStartError);
}
var lines = new List <string>();
process.OutputDataReceived += (_, e) =>
{
if (!string.IsNullOrWhiteSpace(e.Data))
{
lines.Add(e.Data);
}
};
process.ErrorDataReceived += (_, e) =>
{
if (!string.IsNullOrWhiteSpace(e.Data))
{
lines.Add(e.Data);
}
};
process.BeginOutputReadLine();
process.BeginErrorReadLine();
process.WaitForExit();
return(DotNetVersion.Parse(lines));
}
finally
{
Environment.SetEnvironmentVariable(DOTNET_CLI_UI_LANGUAGE, originalValue);
}
}