private static string NugetSearchFullPathToExecutableAtRoot(string executableName, string executableRoot)
{
if (string.IsNullOrWhiteSpace(executableName))
{
throw NullOrWhiteSpaceException(nameof(executableName));
}
if (string.IsNullOrWhiteSpace(executableRoot))
{
throw NullOrWhiteSpaceException(nameof(executableRoot));
}
if (!Directory.Exists(executableRoot))
{
throw NotExisting(nameof(executableRoot));
}
string runtimesLocation = Path.Combine(executableRoot, "runtimes");
RuntimeIdentifier[] runtimeIdentifiers = GetRuntimeIdentifiers(runtimesLocation);
if (runtimeIdentifiers.Length == 0)
{
throw NoUsableRuntime(nameof(executableRoot));
}
RuntimeIdentifier rid = RuntimeIdentifier.OSCurrent;
if (Array.IndexOf(runtimeIdentifiers, rid) == -1)
{
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
throw NoUsableRuntime(nameof(executableRoot));
}
if (!RuntimeIdentifier.TryParse("win-x86", out rid) || Array.IndexOf(runtimeIdentifiers, rid) == -1)
{
throw NoUsableRuntime(nameof(executableRoot));
}
}
string executablePath = Path.Combine(runtimesLocation, rid.ToString(), "native", executableName);
if (!File.Exists(executablePath))
{
throw NoUsableRuntime(nameof(executableRoot));
}
return(executablePath);
}
private static RuntimeIdentifier[] GetRuntimeIdentifiers(string runtimesLocation)
{
string[] runtimeFolders = Directory.GetDirectories(runtimesLocation, "*", SearchOption.TopDirectoryOnly);
List <RuntimeIdentifier> rids = new List <RuntimeIdentifier>(runtimeFolders.Length);
for (int i = 0; i < runtimeFolders.Length; i++)
{
if (RuntimeIdentifier.TryParse(Path.GetFileName(runtimeFolders[i]), out RuntimeIdentifier runtimeIdentifier))
{
rids.Add(runtimeIdentifier);
}
}
return(rids.ToArray());
}