private static IEnumerable <string> /*!*/ GetAbsolutePaths(PlatformAdaptationLayer /*!*/ pal, string /*!*/ path) { if (pal.IsAbsolutePath(path)) { yield return(path); } else { yield return(pal.GetFullPath(path)); string var = pal.GetEnvironmentVariable("PATH"); if (!String.IsNullOrEmpty(var)) { foreach (var prefix in var.Split(Path.PathSeparator)) { if (prefix.Length > 0) { yield return(Path.Combine(prefix, path)); } } } var = Environment.GetFolderPath(Environment.SpecialFolder.System); if (!String.IsNullOrEmpty(var)) { yield return(Path.Combine(var, path)); } var = pal.GetEnvironmentVariable("SystemRoot"); if (!String.IsNullOrEmpty(var)) { yield return(Path.Combine(var, path)); } } }