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Imported Upstream version 4.3.2.467

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Former-commit-id: 9c2cb47f45fa221e661ab616387c9cda183f283d
This commit is contained in:
Xamarin Public Jenkins
2016-02-22 11:00:01 -05:00
parent f302175246
commit f3e3aab35a
4097 changed files with 122406 additions and 82300 deletions
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147
external/referencesource/mscorlib/system/io/path.cs vendored
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@@ -53,31 +53,20 @@ namespace System.IO {
// Platform specific directory separator character. This is backslash
// ('\') on Windows, slash ('/') on Unix, and colon (':') on Mac.
//
#if !PLATFORM_UNIX
public static readonly char DirectorySeparatorChar = '\\';
#else
public static readonly char DirectorySeparatorChar = '/';
#endif // !PLATFORM_UNIX
internal const string DirectorySeparatorCharAsString = "\\";
// Platform specific alternate directory separator character.
// This is backslash ('\') on Unix, and slash ('/') on Windows
// and MacOS.
//
#if !PLATFORM_UNIX
public static readonly char AltDirectorySeparatorChar = '/';
#else
public static readonly char AltDirectorySeparatorChar = '\\';
#endif // !PLATFORM_UNIX
// Platform specific volume separator character. This is colon (':')
// on Windows and MacOS, and slash ('/') on Unix. This is mostly
// useful for parsing paths like "c:\windows" or "MacVolume:System Folder".
//
#if !PLATFORM_UNIX
public static readonly char VolumeSeparatorChar = ':';
#else
public static readonly char VolumeSeparatorChar = '/';
#endif // !PLATFORM_UNIX
// Platform specific invalid list of characters in a path.
// See the "Naming a File" MSDN conceptual docs for more details on
@@ -91,16 +80,14 @@ namespace System.IO {
// String.WhitespaceChars will trim aggressively than what the underlying FS does (for ex, NTFS, FAT).
internal static readonly char[] TrimEndChars = { (char) 0x9, (char) 0xA, (char) 0xB, (char) 0xC, (char) 0xD, (char) 0x20, (char) 0x85, (char) 0xA0};
private static readonly char[] RealInvalidPathChars = { '\"', '<', '>', '|', '\0', (Char)1, (Char)2, (Char)3, (Char)4, (Char)5, (Char)6, (Char)7, (Char)8, (Char)9, (Char)10, (Char)11, (Char)12, (Char)13, (Char)14, (Char)15, (Char)16, (Char)17, (Char)18, (Char)19, (Char)20, (Char)21, (Char)22, (Char)23, (Char)24, (Char)25, (Char)26, (Char)27, (Char)28, (Char)29, (Char)30, (Char)31 };
// This is used by HasIllegalCharacters
private static readonly char[] InvalidPathCharsWithAdditionalChecks = { '\"', '<', '>', '|', '\0', (Char)1, (Char)2, (Char)3, (Char)4, (Char)5, (Char)6, (Char)7, (Char)8, (Char)9, (Char)10, (Char)11, (Char)12, (Char)13, (Char)14, (Char)15, (Char)16, (Char)17, (Char)18, (Char)19, (Char)20, (Char)21, (Char)22, (Char)23, (Char)24, (Char)25, (Char)26, (Char)27, (Char)28, (Char)29, (Char)30, (Char)31, '*', '?' };
private static readonly char[] InvalidFileNameChars = { '\"', '<', '>', '|', '\0', (Char)1, (Char)2, (Char)3, (Char)4, (Char)5, (Char)6, (Char)7, (Char)8, (Char)9, (Char)10, (Char)11, (Char)12, (Char)13, (Char)14, (Char)15, (Char)16, (Char)17, (Char)18, (Char)19, (Char)20, (Char)21, (Char)22, (Char)23, (Char)24, (Char)25, (Char)26, (Char)27, (Char)28, (Char)29, (Char)30, (Char)31, ':', '*', '?', '\\', '/' };
#if !PLATFORM_UNIX
public static readonly char PathSeparator = ';';
#else
public static readonly char PathSeparator = ':';
#endif // !PLATFORM_UNIX
// Make this public sometime.
@@ -239,7 +226,6 @@ namespace System.IO {
int i = 0;
int length = path.Length;
#if !PLATFORM_UNIX
if (length >= 1 && (IsDirectorySeparator(path[0]))) {
// handles UNC names and directories off current drive's root.
i = 1;
@@ -255,12 +241,6 @@ namespace System.IO {
if (length >= 3 && (IsDirectorySeparator(path[2]))) i++;
}
return i;
#else
if (length >= 1 && (IsDirectorySeparator(path[0]))) {
i = 1;
}
return i;
#endif // !PLATFORM_UNIX
}
internal static bool IsDirectorySeparator(char c) {
@@ -310,20 +290,16 @@ namespace System.IO {
// function does not verify that the resulting path
// refers to an existing file or directory on the associated volume.
[Pure]
#if FEATURE_LEGACYNETCFIOSECURITY
[System.Security.SecurityCritical]
#else
[System.Security.SecuritySafeCritical]
#endif //FEATURE_LEGACYNETCFIOSECURITY
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
public static String GetFullPath(String path) {
String fullPath = GetFullPathInternal(path);
#if FEATURE_CORECLR && !FEATURE_LEGACYNETCFIOSECURITY
#if FEATURE_CORECLR
FileSecurityState state = new FileSecurityState(FileSecurityStateAccess.PathDiscovery, path, fullPath);
state.EnsureState();
#elif !FEATURE_CORECLR
new FileIOPermission( FileIOPermissionAccess.PathDiscovery, new String[] { fullPath }, false, false ).Demand();
#else
FileIOPermission.QuickDemand(FileIOPermissionAccess.PathDiscovery, fullPath, false, false);
#endif
return fullPath;
}
@@ -335,7 +311,7 @@ namespace System.IO {
{
String fullPath = GetFullPathInternal(path);
#if !FEATURE_CORECLR
new FileIOPermission(FileIOPermissionAccess.PathDiscovery, new String[] { fullPath }, false, false).Demand();
FileIOPermission.QuickDemand(FileIOPermissionAccess.PathDiscovery, fullPath, false, false);
#endif
return fullPath;
}
@@ -409,7 +385,7 @@ namespace System.IO {
// since StringBuilder is used.
// 2. IsolatedStorage, which supports paths longer than MaxPath (value given
// by maxPathLength.
PathHelper newBuffer = null;
PathHelper newBuffer;
if (path.Length + 1 <= MaxPath) {
char* m_arrayPtr = stackalloc char[MaxPath];
newBuffer = new PathHelper(m_arrayPtr, MaxPath);
@@ -430,7 +406,6 @@ namespace System.IO {
bool firstSegment = true;
int lastDirectorySeparatorPos = 0;
#if !PLATFORM_UNIX
bool mightBeShortFileName = false;
// LEGACY: This code is here for backwards compatibility reasons. It
@@ -441,7 +416,6 @@ namespace System.IO {
index++;
lastSigChar = 0;
}
#endif
// Normalize the string, stripping out redundant dots, spaces, and
// slashes.
@@ -532,7 +506,6 @@ namespace System.IO {
startedWithVolumeSeparator = false;
firstSegment = false;
#if !PLATFORM_UNIX
// For short file names, we must try to expand each of them as
// soon as possible. We need to allow people to specify a file
// name that doesn't exist using a path with short file names
@@ -544,7 +517,7 @@ namespace System.IO {
newBuffer.TryExpandShortFileName();
mightBeShortFileName = false;
}
#endif
int thisPos = newBuffer.Length - 1;
if (thisPos - lastDirectorySeparatorPos > MaxDirectoryLength)
{
@@ -565,14 +538,11 @@ namespace System.IO {
numSpaces++;
}
else { // Normal character logic
#if !PLATFORM_UNIX
if (currentChar == '~' && expandShortPaths)
mightBeShortFileName = true;
#endif
fixupDirectorySeparator = false;
#if !PLATFORM_UNIX
// To reject strings like "C:...\foo" and "C :\foo"
if (firstSegment && currentChar == VolumeSeparatorChar) {
// Only accept "C:", not "c :" or ":"
@@ -597,7 +567,6 @@ namespace System.IO {
numSigChars = 0;
}
else
#endif // !PLATFORM_UNIX
{
numSigChars += 1 + numDots + numSpaces;
}
@@ -686,14 +655,12 @@ namespace System.IO {
throw new ArgumentException(Environment.GetResourceString("Argument_PathUriFormatNotSupported"));
}
}
#if !PLATFORM_UNIX
// If the last part of the path (file or directory name) had a tilde,
// expand that too.
if (mightBeShortFileName) {
newBuffer.TryExpandShortFileName();
}
#endif
// Call the Win32 API to do the final canonicalization step.
int result = 1;
@@ -720,7 +687,6 @@ namespace System.IO {
result = newBuffer.GetFullPathName();
#if !PLATFORM_UNIX
// If we called GetFullPathName with something like "foo" and our
// command window was in short file name mode (ie, by running edlin or
// DOS versions of grep, etc), we might have gotten back a short file
@@ -760,7 +726,6 @@ namespace System.IO {
}
}
}
#endif
}
if (result != 0) {
@@ -812,37 +777,50 @@ namespace System.IO {
return returnVal;
}
internal static readonly int MaxLongPath = 32000;
internal const int MaxLongPath = 32000;
private static readonly String Prefix = @"\\?\";
private const string LongPathPrefix = @"\\?\";
private const string UNCPathPrefix = @"\\";
private const string UNCLongPathPrefixToInsert = @"?\UNC\";
private const string UNCLongPathPrefix = @"\\?\UNC\";
internal unsafe static bool HasLongPathPrefix(String path)
{
return path.StartsWith(Prefix, StringComparison.Ordinal);
return path.StartsWith(LongPathPrefix, StringComparison.Ordinal);
}
internal unsafe static String AddLongPathPrefix(String path)
{
if (path.StartsWith(Prefix, StringComparison.Ordinal))
if (path.StartsWith(LongPathPrefix, StringComparison.Ordinal))
return path;
else
return Prefix + path;
if (path.StartsWith(UNCPathPrefix, StringComparison.Ordinal))
return path.Insert(2, UNCLongPathPrefixToInsert); // Given \\server\share in longpath becomes \\?\UNC\server\share => UNCLongPathPrefix + path.SubString(2); => The actual command simply reduces the operation cost.
return LongPathPrefix + path;
}
internal unsafe static String RemoveLongPathPrefix(String path)
{
if (!path.StartsWith(Prefix, StringComparison.Ordinal))
if (!path.StartsWith(LongPathPrefix, StringComparison.Ordinal))
return path;
else
return path.Substring(4);
if (path.StartsWith(UNCLongPathPrefix, StringComparison.OrdinalIgnoreCase))
return path.Remove(2, 6); // Given \\?\UNC\server\share we return \\server\share => @'\\' + path.SubString(UNCLongPathPrefix.Length) => The actual command simply reduces the operation cost.
return path.Substring(4);
}
internal unsafe static StringBuilder RemoveLongPathPrefix(StringBuilder path)
internal unsafe static StringBuilder RemoveLongPathPrefix(StringBuilder pathSB)
{
if (!path.ToString().StartsWith(Prefix, StringComparison.Ordinal))
return path;
else
return path.Remove(0, 4);
string path = pathSB.ToString();
if (!path.StartsWith(LongPathPrefix, StringComparison.Ordinal))
return pathSB;
if (path.StartsWith(UNCLongPathPrefix, StringComparison.OrdinalIgnoreCase))
return pathSB.Remove(2, 6); // Given \\?\UNC\server\share we return \\server\share => @'\\' + path.SubString(UNCLongPathPrefix.Length) => The actual command simply reduces the operation cost.
return pathSB.Remove(0, 4);
}
// Returns the name and extension parts of the given path. The resulting
@@ -902,11 +880,7 @@ namespace System.IO {
return path.Substring(0, GetRootLength(path));
}
#if FEATURE_LEGACYNETCFIOSECURITY
[System.Security.SecurityCritical]
#else
[System.Security.SecuritySafeCritical]
#endif //FEATURE_LEGACYNETCFIOSECURITY
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
public static String GetTempPath()
@@ -920,10 +894,8 @@ namespace System.IO {
if (r==0) __Error.WinIOError();
path = GetFullPathInternal(path);
#if FEATURE_CORECLR
#if !FEATURE_LEGACYNETCFIOSECURITY
FileSecurityState state = new FileSecurityState(FileSecurityStateAccess.Write, String.Empty, path);
state.EnsureState();
#endif //!FEATURE_LEGACYNETCFIOSECURITY
#endif
return path;
}
@@ -931,13 +903,9 @@ namespace System.IO {
internal static bool IsRelative(string path)
{
Contract.Assert(path != null, "path can't be null");
#if !PLATFORM_UNIX
if ((path.Length >= 3 && path[1] == VolumeSeparatorChar && path[2] == DirectorySeparatorChar &&
((path[0] >= 'a' && path[0] <= 'z') || (path[0] >= 'A' && path[0] <= 'Z'))) ||
(path.Length >= 2 && path[0] == '\\' && path[1] == '\\'))
#else
if(path.Length >= 1 && path[0] == VolumeSeparatorChar)
#endif // !PLATFORM_UNIX
return false;
else
return true;
@@ -976,11 +944,7 @@ namespace System.IO {
// Returns a unique temporary file name, and creates a 0-byte file by that
// name on disk.
#if FEATURE_LEGACYNETCFIOSECURITY
[System.Security.SecurityCritical]
#else
[System.Security.SecuritySafeCritical]
#endif //FEATURE_LEGACYNETCFIOSECURITY
[ResourceExposure(ResourceScope.AppDomain)]
[ResourceConsumption(ResourceScope.AppDomain)]
public static String GetTempFileName()
@@ -1007,13 +971,13 @@ namespace System.IO {
// cause a denial of service attack, demand FileIOPermission to
// that directory.
#if FEATURE_CORECLR && !FEATURE_LEGACYNETCFIOSECURITY
#if FEATURE_CORECLR
if (checkHost)
{
FileSecurityState state = new FileSecurityState(FileSecurityStateAccess.Write, String.Empty, path);
state.EnsureState();
}
#elif !FEATURE_CORECLR
#else
new FileIOPermission(FileIOPermissionAccess.Write, path).Demand();
#endif
StringBuilder sb = new StringBuilder(MAX_PATH);
@@ -1056,11 +1020,8 @@ namespace System.IO {
CheckInvalidPathChars(path);
int length = path.Length;
if ((length >= 1 && (path[0] == DirectorySeparatorChar || path[0] == AltDirectorySeparatorChar))
#if !PLATFORM_UNIX
|| (length >= 2 && path[1] == VolumeSeparatorChar)
#endif
) return true;
if ((length >= 1 && (path[0] == DirectorySeparatorChar || path[0] == AltDirectorySeparatorChar)) || (length >= 2 && path[1] == VolumeSeparatorChar))
return true;
}
return false;
}
@@ -1167,7 +1128,7 @@ namespace System.IO {
char ch = path1[path1.Length - 1];
if (ch != DirectorySeparatorChar && ch != AltDirectorySeparatorChar && ch != VolumeSeparatorChar)
return path1 + DirectorySeparatorChar + path2;
return path1 + DirectorySeparatorCharAsString + path2;
return path1 + path2;
}
@@ -1260,26 +1221,12 @@ namespace System.IO {
{
Contract.Requires(path != null);
#if PLATFORM_UNIX
if (path.Length >= 2 && path[0] == '\\' && path[1] == '\\')
return true;
#endif // PLATFORM_UNIX
for (int i = 0; i < path.Length; i++)
if (checkAdditional)
{
int c = path[i];
// Note: This list is duplicated in static char[] InvalidPathChars
if (c == '\"' || c == '<' || c == '>' || c == '|' || c < 32)
return true;
// used only by FileIOPermission, FileStream.Init, and AppDomainSet.ManifestFilePath
if (checkAdditional &&
(c == '?' || c == '*'))
return true;
return path.IndexOfAny(InvalidPathCharsWithAdditionalChecks) >= 0;
}
return false;
return path.IndexOfAny(RealInvalidPathChars) >= 0;
}
internal static void CheckInvalidPathChars(String path, bool checkAdditional = false)
@@ -1307,7 +1254,7 @@ namespace System.IO {
if (i == 0) return path2;
char ch = path1[i - 1];
if (ch != DirectorySeparatorChar && ch != AltDirectorySeparatorChar && ch != VolumeSeparatorChar)
return path1 + DirectorySeparatorChar + path2;
return path1 + DirectorySeparatorCharAsString + path2;
return path1 + path2;
}