Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / ndp / fx / src / DataWeb / Client / System / Data / Services / Client / Util.cs / 1 / Util.cs
//----------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//
// static utility functions
//
//---------------------------------------------------------------------
namespace System.Data.Services.Client
{
using System.Diagnostics;
///
/// static utility function
///
internal static class Util
{
/// forward slash char array for triming uris
internal static readonly char[] ForwardSlash = new char[1] { '/' };
///
/// static char[] for indenting whitespace when tracing xml
///
private static char[] whitespaceForTracing = new char[] { '\r', '\n', ' ', ' ', ' ', ' ', ' ' };
///
/// ReferenceIdentity is a test hook to help verify we dont' use identity instead of editLink
///
private static Func referenceIdentity = delegate(Uri identity)
{
return identity;
};
///
/// DereferenceIdentity is a test hook to help verify we dont' use identity instead of editLink
///
private static Func dereferenceIdentity = delegate(Uri identity)
{
return identity;
};
///
/// ReferenceIdentity is a test hook to help verify we dont' use identity instead of editLink
///
internal static Func ReferenceIdentity
{
get { return referenceIdentity; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Justification = "Pending")]
set { referenceIdentity = value; }
}
///
/// DereferenceIdentity is a test hook to help verify we dont' use identity instead of editLink
///
internal static Func DereferenceIdentity
{
get { return dereferenceIdentity; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Justification = "Pending")]
set { dereferenceIdentity = value; }
}
///
/// Checks the argument value for null and throw ArgumentNullException if it is null
///
/// type of the argument to prevent accidental boxing of value types
/// argument whose value needs to be checked
/// name of the argument
/// if value is null
/// value
internal static T CheckArgumentNull(T value, string parameterName) where T : class
{
if (null == value)
{
throw Error.ArgumentNull(parameterName);
}
return value;
}
///
/// Checks the string value is not empty
///
/// value to check
/// parameterName of public function
/// if value is null
/// if value is empty
internal static void CheckArgumentNotEmpty(string value, string parameterName)
{
CheckArgumentNull(value, parameterName);
if (0 == value.Length)
{
throw Error.Argument(Strings.Util_EmptyString, parameterName);
}
}
///
/// Checks the array value is not empty
///
/// type of the argument to prevent accidental boxing of value types
/// value to check
/// parameterName of public function
/// if value is null
/// if value is empty or contains null elements
internal static void CheckArgumentNotEmpty(T[] value, string parameterName) where T : class
{
CheckArgumentNull(value, parameterName);
if (0 == value.Length)
{
throw Error.Argument(Strings.Util_EmptyArray, parameterName);
}
for (int i = 0; i < value.Length; ++i)
{
if (Object.ReferenceEquals(value[i], null))
{
throw Error.Argument(Strings.Util_NullArrayElement, parameterName);
}
}
}
///
/// Validate MergeOption
///
/// option to validate
/// name of the parameter being validated
/// if option is not valid
/// option
internal static MergeOption CheckEnumerationValue(MergeOption value, string parameterName)
{
switch (value)
{
case MergeOption.AppendOnly:
case MergeOption.OverwriteChanges:
case MergeOption.PreserveChanges:
case MergeOption.NoTracking:
return value;
default:
throw Error.ArgumentOutOfRange(parameterName);
}
}
///
/// get char[] for indenting whitespace when tracing xml
///
/// how many characters to trace
/// char[]
internal static char[] GetWhitespaceForTracing(int depth)
{
char[] whitespace = Util.whitespaceForTracing;
while (whitespace.Length <= depth)
{
char[] tmp = new char[2 * whitespace.Length];
tmp[0] = '\r';
tmp[1] = '\n';
for (int i = 2; i < tmp.Length; ++i)
{
tmp[i] = ' ';
}
System.Threading.Interlocked.CompareExchange(ref Util.whitespaceForTracing, tmp, whitespace);
whitespace = tmp;
}
return whitespace;
}
/// new Uri(string uriString, UriKind uriKind)
/// value
/// kind
/// new Uri(value, kind)
internal static Uri CreateUri(string value, UriKind kind)
{
Uri result = new Uri(value, kind);
return result;
}
/// new Uri(Uri baseUri, Uri requestUri)
/// baseUri
/// relativeUri
/// new Uri(baseUri, requestUri)
internal static Uri CreateUri(Uri baseUri, Uri requestUri)
{
Debug.Assert((null != baseUri) && baseUri.IsAbsoluteUri, "baseUri !IsAbsoluteUri");
Debug.Assert(String.IsNullOrEmpty(baseUri.Query) && String.IsNullOrEmpty(baseUri.Fragment), "baseUri has query or fragment");
Util.CheckArgumentNull(requestUri, "requestUri");
// there is a bug in (new Uri(Uri,Uri)) which corrupts the port of the result if out relativeUri is also absolute
if (!requestUri.IsAbsoluteUri)
{
if (baseUri.OriginalString.EndsWith("/", StringComparison.Ordinal))
{
if (requestUri.OriginalString.StartsWith("/", StringComparison.Ordinal))
{
requestUri = new Uri(baseUri, Util.CreateUri(requestUri.OriginalString.TrimStart(Util.ForwardSlash), UriKind.Relative));
}
else
{
requestUri = new Uri(baseUri, requestUri);
}
}
else
{
requestUri = Util.CreateUri(baseUri.OriginalString + "/" + requestUri.OriginalString.TrimStart(Util.ForwardSlash), UriKind.Absolute);
}
}
// consider: just use the orignal requestUri if it was is absolute and not care about the baseUri
// always verify IsBaseOf after making absolute to deal with ".." relative Uri
if (!UriUtil.UriInvariantInsensitiveIsBaseOf(baseUri, requestUri))
{
throw Error.Argument(Strings.Context_ServiceRootNotBaseUri, "requestUri");
}
return requestUri;
}
///
/// does the array contain the value reference
///
/// generic type
/// array to search
/// value being looked for
/// true if value reference was found in array
internal static bool ContainsReference(T[] array, T value) where T : class
{
return (0 <= IndexOfReference(array, value));
}
/// dispose of the object and set the reference to null
/// type that implements IDisposable
/// object to dispose
internal static void Dispose(ref T disposable) where T : class, IDisposable
{
Dispose(disposable);
disposable = null;
}
/// dispose of the object
/// type that implements IDisposable
/// object to dispose
internal static void Dispose(T disposable) where T : class, IDisposable
{
if (null != disposable)
{
disposable.Dispose();
}
}
///
/// index of value reference in the array
///
/// generic type
/// array to search
/// value being looked for
/// index of value reference in the array else (-1)
internal static int IndexOfReference(T[] array, T value) where T : class
{
Debug.Assert(null != array, "null array");
for (int i = 0; i < array.Length; ++i)
{
if (object.ReferenceEquals(array[i], value))
{
return i;
}
}
return -1;
}
/// Checks whether the exception should not be handled.
/// exception to test
/// true if the exception should not be handled
internal static bool DoNotHandleException(Exception ex)
{
return ((null != ex) &&
((ex is System.StackOverflowException) ||
(ex is System.OutOfMemoryException) ||
(ex is System.Threading.ThreadAbortException)));
}
/// validate value is non-null
/// type of value
/// value
/// error code to throw if null
/// the non-null value
internal static T NullCheck(T value, InternalError errorcode) where T : class
{
if (Object.ReferenceEquals(value, null))
{
Error.ThrowInternalError(errorcode);
}
return value;
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//----------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//
// static utility functions
//
//---------------------------------------------------------------------
namespace System.Data.Services.Client
{
using System.Diagnostics;
///
/// static utility function
///
internal static class Util
{
/// forward slash char array for triming uris
internal static readonly char[] ForwardSlash = new char[1] { '/' };
///
/// static char[] for indenting whitespace when tracing xml
///
private static char[] whitespaceForTracing = new char[] { '\r', '\n', ' ', ' ', ' ', ' ', ' ' };
///
/// ReferenceIdentity is a test hook to help verify we dont' use identity instead of editLink
///
private static Func referenceIdentity = delegate(Uri identity)
{
return identity;
};
///
/// DereferenceIdentity is a test hook to help verify we dont' use identity instead of editLink
///
private static Func dereferenceIdentity = delegate(Uri identity)
{
return identity;
};
///
/// ReferenceIdentity is a test hook to help verify we dont' use identity instead of editLink
///
internal static Func ReferenceIdentity
{
get { return referenceIdentity; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Justification = "Pending")]
set { referenceIdentity = value; }
}
///
/// DereferenceIdentity is a test hook to help verify we dont' use identity instead of editLink
///
internal static Func DereferenceIdentity
{
get { return dereferenceIdentity; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Justification = "Pending")]
set { dereferenceIdentity = value; }
}
///
/// Checks the argument value for null and throw ArgumentNullException if it is null
///
/// type of the argument to prevent accidental boxing of value types
/// argument whose value needs to be checked
/// name of the argument
/// if value is null
/// value
internal static T CheckArgumentNull(T value, string parameterName) where T : class
{
if (null == value)
{
throw Error.ArgumentNull(parameterName);
}
return value;
}
///
/// Checks the string value is not empty
///
/// value to check
/// parameterName of public function
/// if value is null
/// if value is empty
internal static void CheckArgumentNotEmpty(string value, string parameterName)
{
CheckArgumentNull(value, parameterName);
if (0 == value.Length)
{
throw Error.Argument(Strings.Util_EmptyString, parameterName);
}
}
///
/// Checks the array value is not empty
///
/// type of the argument to prevent accidental boxing of value types
/// value to check
/// parameterName of public function
/// if value is null
/// if value is empty or contains null elements
internal static void CheckArgumentNotEmpty(T[] value, string parameterName) where T : class
{
CheckArgumentNull(value, parameterName);
if (0 == value.Length)
{
throw Error.Argument(Strings.Util_EmptyArray, parameterName);
}
for (int i = 0; i < value.Length; ++i)
{
if (Object.ReferenceEquals(value[i], null))
{
throw Error.Argument(Strings.Util_NullArrayElement, parameterName);
}
}
}
///
/// Validate MergeOption
///
/// option to validate
/// name of the parameter being validated
/// if option is not valid
/// option
internal static MergeOption CheckEnumerationValue(MergeOption value, string parameterName)
{
switch (value)
{
case MergeOption.AppendOnly:
case MergeOption.OverwriteChanges:
case MergeOption.PreserveChanges:
case MergeOption.NoTracking:
return value;
default:
throw Error.ArgumentOutOfRange(parameterName);
}
}
///
/// get char[] for indenting whitespace when tracing xml
///
/// how many characters to trace
/// char[]
internal static char[] GetWhitespaceForTracing(int depth)
{
char[] whitespace = Util.whitespaceForTracing;
while (whitespace.Length <= depth)
{
char[] tmp = new char[2 * whitespace.Length];
tmp[0] = '\r';
tmp[1] = '\n';
for (int i = 2; i < tmp.Length; ++i)
{
tmp[i] = ' ';
}
System.Threading.Interlocked.CompareExchange(ref Util.whitespaceForTracing, tmp, whitespace);
whitespace = tmp;
}
return whitespace;
}
/// new Uri(string uriString, UriKind uriKind)
/// value
/// kind
/// new Uri(value, kind)
internal static Uri CreateUri(string value, UriKind kind)
{
Uri result = new Uri(value, kind);
return result;
}
/// new Uri(Uri baseUri, Uri requestUri)
/// baseUri
/// relativeUri
/// new Uri(baseUri, requestUri)
internal static Uri CreateUri(Uri baseUri, Uri requestUri)
{
Debug.Assert((null != baseUri) && baseUri.IsAbsoluteUri, "baseUri !IsAbsoluteUri");
Debug.Assert(String.IsNullOrEmpty(baseUri.Query) && String.IsNullOrEmpty(baseUri.Fragment), "baseUri has query or fragment");
Util.CheckArgumentNull(requestUri, "requestUri");
// there is a bug in (new Uri(Uri,Uri)) which corrupts the port of the result if out relativeUri is also absolute
if (!requestUri.IsAbsoluteUri)
{
if (baseUri.OriginalString.EndsWith("/", StringComparison.Ordinal))
{
if (requestUri.OriginalString.StartsWith("/", StringComparison.Ordinal))
{
requestUri = new Uri(baseUri, Util.CreateUri(requestUri.OriginalString.TrimStart(Util.ForwardSlash), UriKind.Relative));
}
else
{
requestUri = new Uri(baseUri, requestUri);
}
}
else
{
requestUri = Util.CreateUri(baseUri.OriginalString + "/" + requestUri.OriginalString.TrimStart(Util.ForwardSlash), UriKind.Absolute);
}
}
// consider: just use the orignal requestUri if it was is absolute and not care about the baseUri
// always verify IsBaseOf after making absolute to deal with ".." relative Uri
if (!UriUtil.UriInvariantInsensitiveIsBaseOf(baseUri, requestUri))
{
throw Error.Argument(Strings.Context_ServiceRootNotBaseUri, "requestUri");
}
return requestUri;
}
///
/// does the array contain the value reference
///
/// generic type
/// array to search
/// value being looked for
/// true if value reference was found in array
internal static bool ContainsReference(T[] array, T value) where T : class
{
return (0 <= IndexOfReference(array, value));
}
/// dispose of the object and set the reference to null
/// type that implements IDisposable
/// object to dispose
internal static void Dispose(ref T disposable) where T : class, IDisposable
{
Dispose(disposable);
disposable = null;
}
/// dispose of the object
/// type that implements IDisposable
/// object to dispose
internal static void Dispose(T disposable) where T : class, IDisposable
{
if (null != disposable)
{
disposable.Dispose();
}
}
///
/// index of value reference in the array
///
/// generic type
/// array to search
/// value being looked for
/// index of value reference in the array else (-1)
internal static int IndexOfReference(T[] array, T value) where T : class
{
Debug.Assert(null != array, "null array");
for (int i = 0; i < array.Length; ++i)
{
if (object.ReferenceEquals(array[i], value))
{
return i;
}
}
return -1;
}
/// Checks whether the exception should not be handled.
/// exception to test
/// true if the exception should not be handled
internal static bool DoNotHandleException(Exception ex)
{
return ((null != ex) &&
((ex is System.StackOverflowException) ||
(ex is System.OutOfMemoryException) ||
(ex is System.Threading.ThreadAbortException)));
}
/// validate value is non-null
/// type of value
/// value
/// error code to throw if null
/// the non-null value
internal static T NullCheck(T value, InternalError errorcode) where T : class
{
if (Object.ReferenceEquals(value, null))
{
Error.ThrowInternalError(errorcode);
}
return value;
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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