The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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54 lines
2.0 KiB
54 lines
2.0 KiB
#region Copyright notice and license |
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// Copyright 2019 The gRPC Authors |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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#endregion |
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using System; |
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using System.Runtime.CompilerServices; |
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using System.Text; |
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namespace Grpc.Core.Api.Utils |
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{ |
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internal static class EncodingExtensions |
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{ |
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#if NET45 // back-fill over a method missing in NET45 |
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/// <summary> |
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/// Converts <c>byte*</c> pointing to an encoded byte array to a <c>string</c> using the provided <c>Encoding</c>. |
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/// </summary> |
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public static unsafe string GetString(this Encoding encoding, byte* source, int byteCount) |
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{ |
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if (byteCount == 0) return ""; // most callers will have already checked, but: make sure |
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// allocate a right-sized string and decode into it |
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int charCount = encoding.GetCharCount(source, byteCount); |
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string s = new string('\0', charCount); |
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fixed (char* cPtr = s) |
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{ |
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encoding.GetChars(source, byteCount, cPtr, charCount); |
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} |
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return s; |
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} |
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#endif |
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/// <summary> |
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/// Converts <c>IntPtr</c> pointing to a encoded byte array to a <c>string</c> using the provided <c>Encoding</c>. |
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/// </summary> |
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[MethodImpl(MethodImplOptions.AggressiveInlining)] |
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public static unsafe string GetString(this Encoding encoding, IntPtr ptr, int len) |
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{ |
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return len == 0 ? "" : encoding.GetString((byte*)ptr.ToPointer(), len); |
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} |
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} |
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}
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