using System; using System.Collections.Generic; namespace Microsoft.Extensions.Configuration { public static class ConfigurationPath { public static readonly string KeyDelimiter = ":"; public static string Combine(params string[] pathSegments) { if (pathSegments == null) throw new ArgumentNullException("pathSegments"); return string.Join(KeyDelimiter, pathSegments); } public static string Combine(IEnumerable<string> pathSegments) { if (pathSegments == null) throw new ArgumentNullException("pathSegments"); return string.Join(KeyDelimiter, pathSegments); } public static string GetSectionKey(string path) { if (string.IsNullOrEmpty(path)) return path; int num = path.LastIndexOf(KeyDelimiter, StringComparison.OrdinalIgnoreCase); if (num != -1) return path.Substring(num + 1); return path; } public static string GetParentPath(string path) { if (string.IsNullOrEmpty(path)) return null; int num = path.LastIndexOf(KeyDelimiter, StringComparison.OrdinalIgnoreCase); if (num != -1) return path.Substring(0, num); return null; } } }