internal async Task SelfUpdate(string exePath, NuGetVersion version)
{
Console.WriteLine(LocalizedResourceManager.GetString("UpdateCommandCheckingForUpdates"), NuGetConstants.DefaultFeedUrl);
var metadataResource = _source.GetResource <MetadataResource>();
if (metadataResource != null)
{
ResolutionContext resolutionContext = new ResolutionContext();
var latestVersionKeyPair = await metadataResource.GetLatestVersions(new List <string>() { NuGetCommandLinePackageId },
resolutionContext.IncludePrerelease, resolutionContext.IncludeUnlisted, CancellationToken.None);
var lastetVersion = latestVersionKeyPair.FirstOrDefault().Value;
if (version >= lastetVersion)
{
Console.WriteLine(LocalizedResourceManager.GetString("UpdateCommandNuGetUpToDate"));
}
else
{
Console.WriteLine(LocalizedResourceManager.GetString("UpdateCommandUpdatingNuGet"), lastetVersion.Version.ToString());
// Get NuGet.exe file
using (var targetPackageStream = new MemoryStream())
{
await PackageDownloader.GetPackageStream(_source, new PackageIdentity(NuGetCommandLinePackageId, lastetVersion), targetPackageStream, CancellationToken.None);
// If for some reason this package doesn't have NuGet.exe then we don't want to use it
if (targetPackageStream == null)
{
throw new CommandLineException(LocalizedResourceManager.GetString("UpdateCommandUnableToLocateNuGetExe"));
}
// Get the exe path and move it to a temp file (NuGet.exe.old) so we can replace the running exe with the bits we got
// from the package repository
string renamedPath = exePath + ".old";
Move(exePath, renamedPath);
// Update the file
UpdateFile(exePath, targetPackageStream);
Console.WriteLine(LocalizedResourceManager.GetString("UpdateCommandUpdateSuccessful"));
}
}
}
}
