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Fixed accounting for zero terminator in long path limitation
Fixes #1909 Co-Authored-By: Taloth <Taloth@users.noreply.github.com>
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Original file line number | Diff line number | Diff line change |
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@@ -1,15 +1,76 @@ | ||
using System; | ||
using System.IO; | ||
using NzbDrone.Common.EnvironmentInfo; | ||
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namespace NzbDrone.Common.Disk | ||
{ | ||
public static class LongPathSupport | ||
{ | ||
private static int MAX_PATH; | ||
private static int MAX_NAME; | ||
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public static void Enable() | ||
{ | ||
// Mono has an issue with enabling long path support via app.config. | ||
// This works for both mono and .net on Windows. | ||
AppContext.SetSwitch("Switch.System.IO.UseLegacyPathHandling", false); | ||
AppContext.SetSwitch("Switch.System.IO.BlockLongPaths", false); | ||
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DetectLongPathLimits(); | ||
} | ||
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private static void DetectLongPathLimits() | ||
{ | ||
if (!int.TryParse(Environment.GetEnvironmentVariable("MAX_PATH"), out MAX_PATH)) | ||
{ | ||
if (OsInfo.IsLinux) | ||
{ | ||
MAX_PATH = 4096; | ||
} | ||
else | ||
{ | ||
try | ||
{ | ||
Path.GetDirectoryName($@"C:\{new string('a', 300)}\ab"); | ||
MAX_PATH = 4096; | ||
} | ||
catch | ||
{ | ||
MAX_PATH = 260 - 1; | ||
} | ||
} | ||
} | ||
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if (!int.TryParse(Environment.GetEnvironmentVariable("MAX_NAME"), out MAX_NAME)) | ||
{ | ||
MAX_NAME = 255; | ||
} | ||
} | ||
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public static int MaxFilePathLength | ||
{ | ||
get | ||
{ | ||
if (MAX_PATH == 0) | ||
{ | ||
DetectLongPathLimits(); | ||
} | ||
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return MAX_PATH; | ||
} | ||
} | ||
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public static int MaxFileNameLength | ||
{ | ||
get | ||
{ | ||
if (MAX_NAME == 0) | ||
{ | ||
DetectLongPathLimits(); | ||
} | ||
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return MAX_NAME; | ||
} | ||
} | ||
} | ||
} |