private bool DownloadSinglePackage(PackageItem pkgItem, NuGetRequest request, string destLocation, ProgressTracker progressTracker)
{
try
{
request.Debug(Messages.DebugInfoCallMethod, "NuGetFilesFeed3", "DownloadSinglePackage");
if (string.IsNullOrWhiteSpace(pkgItem.PackageFilename) || pkgItem.PackageSource == null || pkgItem.PackageSource.Location == null ||
(pkgItem.PackageSource.IsSourceAFile && pkgItem.Package == null))
{
request.WriteError(ErrorCategory.ObjectNotFound, pkgItem.Id, Constants.Messages.UnableToResolvePackage, pkgItem.Id);
return(false);
}
// this is if the user says -force
bool force = request.GetOptionValue("Force") != null;
// combine the path and the file name
destLocation = Path.Combine(destLocation, pkgItem.PackageFilename);
// if the file already exists
if (File.Exists(destLocation))
{
// if no force, just return
if (!force)
{
request.Verbose(Constants.Messages.SkippedDownloadedPackage, pkgItem.Id);
request.YieldPackage(pkgItem, pkgItem.PackageSource.Name);
return(true);
}
// here we know it is forced, so delete
FileUtility.DeleteFile(destLocation, isThrow: false);
// if after we try delete, it is still there, tells the user we can't perform the action
if (File.Exists(destLocation))
{
request.WriteError(ErrorCategory.ResourceUnavailable, destLocation, Constants.Messages.UnableToOverwriteExistingFile, destLocation);
return(false);
}
}
bool downloadSuccessful = false;
try
{
// if no repository, we can't do anything
if (pkgItem.PackageSource.Repository == null)
{
return(false);
}
if (pkgItem.PackageSource.Repository.IsFile)
{
using (var input = File.OpenRead(pkgItem.Package.FullFilePath))
{
using (var output = new FileStream(destLocation, FileMode.Create, FileAccess.Write, FileShare.Read))
{
input.CopyTo(output);
downloadSuccessful = true;
}
}
}
else
{
string httpquery = MakeDownloadUri(pkgItem);
if (!String.IsNullOrEmpty(httpquery))
{
downloadSuccessful = NuGetClient.DownloadPackage(pkgItem.Id, pkgItem.Version, destLocation, httpquery, request, pkgItem.PackageSource, progressTracker);
}
else
{
downloadSuccessful = false;
request.Warning(Messages.FailedToCreateDownloadUri, pkgItem.Id, pkgItem.Version);
}
}
}
catch (Exception ex)
{
ex.Dump(request);
return(false);
}
if (downloadSuccessful)
{
request.Verbose(Resources.Messages.SuccessfullyDownloaded, pkgItem.Id);
// provide the directory we save to to yieldpackage
request.YieldPackage(pkgItem, pkgItem.PackageSource.Name, Path.GetDirectoryName(destLocation));
}
return(downloadSuccessful);
} finally
{
request.Debug(Messages.DebugInfoReturnCall, "NuGetFilesFeed3", "DownloadSinglePackage");
}
}
