/// <summary>
/// Loads the machine wide settings.
/// </summary>
/// <remarks>
/// For example, if <paramref name="paths" /> is {"IDE", "Version", "SKU" }, then
/// the files loaded are (in the order that they are loaded):
/// %programdata%\NuGet\Config\IDE\Version\SKU\*.config
/// %programdata%\NuGet\Config\IDE\Version\*.config
/// %programdata%\NuGet\Config\IDE\*.config
/// %programdata%\NuGet\Config\*.config
/// </remarks>
/// <param name="root">The file system in which the settings files are read.</param>
/// <param name="paths">The additional paths under which to look for settings files.</param>
/// <returns>The list of settings read.</returns>
public static ISettings LoadMachineWideSettings(
string root,
params string[] paths)
{
if (string.IsNullOrEmpty(root))
{
throw new ArgumentException("root cannot be null or empty");
}
var settingFiles = new List <SettingsFile>();
var combinedPath = Path.Combine(paths);
while (true)
{
// load setting files in directory
foreach (var file in FileSystemUtility.GetFilesRelativeToRoot(root, combinedPath, SupportedMachineWideConfigExtension, SearchOption.TopDirectoryOnly))
{
var settings = ReadSettings(root, file, isMachineWideSettings: true);
if (settings != null)
{
settingFiles.Add(settings);
}
}
if (combinedPath.Length == 0)
{
break;
}
var index = combinedPath.LastIndexOf(Path.DirectorySeparatorChar);
if (index < 0)
{
index = 0;
}
combinedPath = combinedPath.Substring(0, index);
}
if (settingFiles.Any())
{
SettingsFile.ConnectSettingsFilesLinkedList(settingFiles);
return(new Settings(settingFiles.Last()));
}
return(NullSettings.Instance);
}
private static ISettings LoadSettingsForSpecificConfigs(
string root,
string configFileName,
List <SettingsFile> validSettingFiles,
IMachineWideSettings machineWideSettings,
bool loadUserWideSettings,
bool useTestingGlobalPath)
{
if (loadUserWideSettings)
{
var userSpecific = LoadUserSpecificSettings(root, configFileName, useTestingGlobalPath);
if (userSpecific != null)
{
validSettingFiles.Add(userSpecific);
}
}
if (machineWideSettings != null && machineWideSettings.Settings is Settings mwSettings && string.IsNullOrEmpty(configFileName))
{
// Priority gives you the settings file in the order you want to start reading them
validSettingFiles.AddRange(
mwSettings.Priority.Select(
s => new SettingsFile(s.DirectoryPath, s.FileName, s.IsMachineWide)));
}
if (validSettingFiles?.Any() != true)
{
// This means we've failed to load all config files and also failed to load or create the one in %AppData%
// Work Item 1531: If the config file is malformed and the constructor throws, NuGet fails to load in VS.
// Returning a null instance prevents us from silently failing and also from picking up the wrong config
return(NullSettings.Instance);
}
SettingsFile.ConnectSettingsFilesLinkedList(validSettingFiles);
// Create a settings object with the linked list head. Typically, it's either the config file in %ProgramData%\NuGet\Config,
// or the user wide config (%APPDATA%\NuGet\nuget.config) if there are no machine
// wide config files. The head file is the one we want to read first, while the user wide config
// is the one that we want to write to.
// TODO: add UI to allow specifying which one to write to
return(new Settings(validSettingFiles.Last()));
}