return !Path.IsPathRooted(path);
}
- internal static string TrimEndingDirectorySeparator(string path) =>
- path.Length > 1 && IsDirectorySeparator(path[path.Length - 1]) ? // exclude root "/"
- path.Substring(0, path.Length - 1) :
- path;
-
/// <summary>
/// Returns true if the path is effectively empty for the current OS.
/// For unix, this is empty or null. For Windows, this is empty, null, or
return ((value >= 'A' && value <= 'Z') || (value >= 'a' && value <= 'z'));
}
+ private static bool EndsWithPeriodOrSpace(string path)
+ {
+ if (string.IsNullOrEmpty(path))
+ return false;
+
+ char c = path[path.Length - 1];
+ return c == ' ' || c == '.';
+ }
+
+ /// <summary>
+ /// Adds the extended path prefix (\\?\) if not already a device path, IF the path is not relative,
+ /// AND the path is more than 259 characters. (> MAX_PATH + null). This will also insert the extended
+ /// prefix if the path ends with a period or a space. Trailing periods and spaces are normally eaten
+ /// away from paths during normalization, but if we see such a path at this point it should be
+ /// normalized and has retained the final characters. (Typically from one of the *Info classes)
+ /// </summary>
+ internal static string EnsureExtendedPrefixIfNeeded(string path)
+ {
+ if (path != null && (path.Length >= MaxShortPath || EndsWithPeriodOrSpace(path)))
+ {
+ return EnsureExtendedPrefix(path);
+ }
+ else
+ {
+ return path;
+ }
+ }
+
/// <summary>
+ /// DO NOT USE- Use EnsureExtendedPrefixIfNeeded. This will be removed shortly.
/// Adds the extended path prefix (\\?\) if not already a device path, IF the path is not relative,
/// AND the path is more than 259 characters. (> MAX_PATH + null)
/// </summary>
/// <summary>
/// Returns true if the path ends in a directory separator.
/// </summary>
- internal static bool EndsInDirectorySeparator(ReadOnlySpan<char> path) => path.Length > 0 && IsDirectorySeparator(path[path.Length - 1]);
+ internal static bool EndsInDirectorySeparator(ReadOnlySpan<char> path)
+ => path.Length > 0 && IsDirectorySeparator(path[path.Length - 1]);
/// <summary>
/// Returns true if the path starts in a directory separator.
/// </summary>
internal static bool StartsWithDirectorySeparator(ReadOnlySpan<char> path) => path.Length > 0 && IsDirectorySeparator(path[0]);
+ internal static string EnsureTrailingSeparator(string path)
+ => EndsInDirectorySeparator(path) ? path : path + DirectorySeparatorCharAsString;
+
+ internal static string TrimEndingDirectorySeparator(string path) =>
+ EndsInDirectorySeparator(path) && !IsRoot(path) ?
+ path.Substring(0, path.Length - 1) :
+ path;
+
+ internal static ReadOnlySpan<char> TrimEndingDirectorySeparator(ReadOnlySpan<char> path) =>
+ EndsInDirectorySeparator(path) && !IsRoot(path) ?
+ path.Slice(0, path.Length - 1) :
+ path;
+
+ internal static bool IsRoot(ReadOnlySpan<char> path)
+ => path.Length == GetRootLength(path);
+
/// <summary>
/// Get the common path length from the start of the string.
/// </summary>