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Diffstat (limited to 'src/mscorlib/corefx/System/IO/PathInternal.Windows.StringBuffer.cs')
-rw-r--r--src/mscorlib/corefx/System/IO/PathInternal.Windows.StringBuffer.cs93
1 files changed, 0 insertions, 93 deletions
diff --git a/src/mscorlib/corefx/System/IO/PathInternal.Windows.StringBuffer.cs b/src/mscorlib/corefx/System/IO/PathInternal.Windows.StringBuffer.cs
deleted file mode 100644
index 84953df37b..0000000000
--- a/src/mscorlib/corefx/System/IO/PathInternal.Windows.StringBuffer.cs
+++ /dev/null
@@ -1,93 +0,0 @@
-// Licensed to the .NET Foundation under one or more agreements.
-// The .NET Foundation licenses this file to you under the MIT license.
-// See the LICENSE file in the project root for more information.
-
-using System.Diagnostics;
-using System.Runtime.InteropServices;
-
-namespace System.IO
-{
- /// <summary>Contains internal path helpers that are shared between many projects.</summary>
- internal static partial class PathInternal
- {
- /// <summary>
- /// Returns true if the path uses the extended syntax (\\?\)
- /// </summary>
- internal static bool IsExtended(ref StringBuffer path)
- {
- // While paths like "//?/C:/" will work, they're treated the same as "\\.\" paths.
- // Skipping of normalization will *only* occur if back slashes ('\') are used.
- return path.Length >= DevicePrefixLength
- && path[0] == '\\'
- && (path[1] == '\\' || path[1] == '?')
- && path[2] == '?'
- && path[3] == '\\';
- }
-
- /// <summary>
- /// Gets the length of the root of the path (drive, share, etc.).
- /// </summary>
- internal unsafe static int GetRootLength(ref StringBuffer path)
- {
- if (path.Length == 0) return 0;
-
- fixed (char* value = path.UnderlyingArray)
- {
- return GetRootLength(value, path.Length);
- }
- }
-
- /// <summary>
- /// Returns true if the path uses any of the DOS device path syntaxes. ("\\.\", "\\?\", or "\??\")
- /// </summary>
- internal static bool IsDevice(ref StringBuffer path)
- {
- // If the path begins with any two separators is will be recognized and normalized and prepped with
- // "\??\" for internal usage correctly. "\??\" is recognized and handled, "/??/" is not.
- return IsExtended(ref path)
- ||
- (
- path.Length >= DevicePrefixLength
- && IsDirectorySeparator(path[0])
- && IsDirectorySeparator(path[1])
- && (path[2] == '.' || path[2] == '?')
- && IsDirectorySeparator(path[3])
- );
- }
-
- /// <summary>
- /// Returns true if the path specified is relative to the current drive or working directory.
- /// Returns false if the path is fixed to a specific drive or UNC path. This method does no
- /// validation of the path (URIs will be returned as relative as a result).
- /// </summary>
- /// <remarks>
- /// Handles paths that use the alternate directory separator. It is a frequent mistake to
- /// assume that rooted paths (Path.IsPathRooted) are not relative. This isn't the case.
- /// "C:a" is drive relative- meaning that it will be resolved against the current directory
- /// for C: (rooted, but relative). "C:\a" is rooted and not relative (the current directory
- /// will not be used to modify the path).
- /// </remarks>
- internal static bool IsPartiallyQualified(ref StringBuffer path)
- {
- if (path.Length < 2)
- {
- // It isn't fixed, it must be relative. There is no way to specify a fixed
- // path with one character (or less).
- return true;
- }
-
- if (IsDirectorySeparator(path[0]))
- {
- // There is no valid way to specify a relative path with two initial slashes or
- // \? as ? isn't valid for drive relative paths and \??\ is equivalent to \\?\
- return !(path[1] == '?' || IsDirectorySeparator(path[1]));
- }
-
- // The only way to specify a fixed path that doesn't begin with two slashes
- // is the drive, colon, slash format- i.e. C:\
- return !((path.Length >= 3)
- && (path[1] == VolumeSeparatorChar)
- && IsDirectorySeparator(path[2]));
- }
- }
-}