50 lines
2.0 KiB
C#
50 lines
2.0 KiB
C#
//------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------
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namespace System.ServiceModel.Channels
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{
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using System.Xml;
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static class ByteStreamMessageUtility
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{
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public const string StreamElementName = "Binary";
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public const string XmlNamespace = "http://www.w3.org/XML/1998/namespace";
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public const string XmlNamespaceNamespace = "http://www.w3.org/2000/xmlns/";
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// used when doing message tracing
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internal const string EncoderName = "ByteStreamMessageEncoder";
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internal static void EnsureByteBoundaries(byte[] buffer, int index, int count, bool isRead)
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{
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if (buffer == null)
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{
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throw FxTrace.Exception.ArgumentNull("buffer");
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}
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if (index < 0)
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{
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throw FxTrace.Exception.ArgumentOutOfRange("index", index, SR.ArgumentOutOfMinRange(0));
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}
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// we explicitly allow the case for index = 0, buffer.Length = 0 and count = 0 when it is write
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// Note that we rely on the last check of count > buffer.Length - index to cover count > 0 && index == buffer.Length case
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if (index > buffer.Length || (isRead && index == buffer.Length))
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{
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throw FxTrace.Exception.ArgumentOutOfRange("index", index, SR.OffsetExceedsBufferSize(buffer.Length));
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}
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if (count < 0)
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{
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throw FxTrace.Exception.ArgumentOutOfRange("count", count, SR.ArgumentOutOfMinRange(0));
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}
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if (count > buffer.Length - index)
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{
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throw FxTrace.Exception.ArgumentOutOfRange("count", count, SR.SizeExceedsRemainingBufferSpace(buffer.Length - index));
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}
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}
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internal static XmlDictionaryReaderQuotas EnsureQuotas(XmlDictionaryReaderQuotas quotas)
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{
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return quotas ?? EncoderDefaults.ReaderQuotas;
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}
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}
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}
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