Squashed 'third_party/protobuf/' content from commit e35e248
Change-Id: I6cbe123d09fe50fdcad0e51466665daeee7433c7
git-subtree-dir: third_party/protobuf
git-subtree-split: e35e24800fb8d694bdeea5fd63dc7d1b14d68723
diff --git a/csharp/src/Google.Protobuf/MessageExtensions.cs b/csharp/src/Google.Protobuf/MessageExtensions.cs
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+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2015 Google Inc. All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#endregion
+
+using System.IO;
+
+namespace Google.Protobuf
+{
+ /// <summary>
+ /// Extension methods on <see cref="IMessage"/> and <see cref="IMessage{T}"/>.
+ /// </summary>
+ public static class MessageExtensions
+ {
+ /// <summary>
+ /// Merges data from the given byte array into an existing message.
+ /// </summary>
+ /// <param name="message">The message to merge the data into.</param>
+ /// <param name="data">The data to merge, which must be protobuf-encoded binary data.</param>
+ public static void MergeFrom(this IMessage message, byte[] data)
+ {
+ ProtoPreconditions.CheckNotNull(message, "message");
+ ProtoPreconditions.CheckNotNull(data, "data");
+ CodedInputStream input = new CodedInputStream(data);
+ message.MergeFrom(input);
+ input.CheckReadEndOfStreamTag();
+ }
+
+ /// <summary>
+ /// Merges data from the given byte string into an existing message.
+ /// </summary>
+ /// <param name="message">The message to merge the data into.</param>
+ /// <param name="data">The data to merge, which must be protobuf-encoded binary data.</param>
+ public static void MergeFrom(this IMessage message, ByteString data)
+ {
+ ProtoPreconditions.CheckNotNull(message, "message");
+ ProtoPreconditions.CheckNotNull(data, "data");
+ CodedInputStream input = data.CreateCodedInput();
+ message.MergeFrom(input);
+ input.CheckReadEndOfStreamTag();
+ }
+
+ /// <summary>
+ /// Merges data from the given stream into an existing message.
+ /// </summary>
+ /// <param name="message">The message to merge the data into.</param>
+ /// <param name="input">Stream containing the data to merge, which must be protobuf-encoded binary data.</param>
+ public static void MergeFrom(this IMessage message, Stream input)
+ {
+ ProtoPreconditions.CheckNotNull(message, "message");
+ ProtoPreconditions.CheckNotNull(input, "input");
+ CodedInputStream codedInput = new CodedInputStream(input);
+ message.MergeFrom(codedInput);
+ codedInput.CheckReadEndOfStreamTag();
+ }
+
+ /// <summary>
+ /// Merges length-delimited data from the given stream into an existing message.
+ /// </summary>
+ /// <remarks>
+ /// The stream is expected to contain a length and then the data. Only the amount of data
+ /// specified by the length will be consumed.
+ /// </remarks>
+ /// <param name="message">The message to merge the data into.</param>
+ /// <param name="input">Stream containing the data to merge, which must be protobuf-encoded binary data.</param>
+ public static void MergeDelimitedFrom(this IMessage message, Stream input)
+ {
+ ProtoPreconditions.CheckNotNull(message, "message");
+ ProtoPreconditions.CheckNotNull(input, "input");
+ int size = (int) CodedInputStream.ReadRawVarint32(input);
+ Stream limitedStream = new LimitedInputStream(input, size);
+ message.MergeFrom(limitedStream);
+ }
+
+ /// <summary>
+ /// Converts the given message into a byte array in protobuf encoding.
+ /// </summary>
+ /// <param name="message">The message to convert.</param>
+ /// <returns>The message data as a byte array.</returns>
+ public static byte[] ToByteArray(this IMessage message)
+ {
+ ProtoPreconditions.CheckNotNull(message, "message");
+ byte[] result = new byte[message.CalculateSize()];
+ CodedOutputStream output = new CodedOutputStream(result);
+ message.WriteTo(output);
+ output.CheckNoSpaceLeft();
+ return result;
+ }
+
+ /// <summary>
+ /// Writes the given message data to the given stream in protobuf encoding.
+ /// </summary>
+ /// <param name="message">The message to write to the stream.</param>
+ /// <param name="output">The stream to write to.</param>
+ public static void WriteTo(this IMessage message, Stream output)
+ {
+ ProtoPreconditions.CheckNotNull(message, "message");
+ ProtoPreconditions.CheckNotNull(output, "output");
+ CodedOutputStream codedOutput = new CodedOutputStream(output);
+ message.WriteTo(codedOutput);
+ codedOutput.Flush();
+ }
+
+ /// <summary>
+ /// Writes the length and then data of the given message to a stream.
+ /// </summary>
+ /// <param name="message">The message to write.</param>
+ /// <param name="output">The output stream to write to.</param>
+ public static void WriteDelimitedTo(this IMessage message, Stream output)
+ {
+ ProtoPreconditions.CheckNotNull(message, "message");
+ ProtoPreconditions.CheckNotNull(output, "output");
+ CodedOutputStream codedOutput = new CodedOutputStream(output);
+ codedOutput.WriteRawVarint32((uint)message.CalculateSize());
+ message.WriteTo(codedOutput);
+ codedOutput.Flush();
+ }
+
+ /// <summary>
+ /// Converts the given message into a byte string in protobuf encoding.
+ /// </summary>
+ /// <param name="message">The message to convert.</param>
+ /// <returns>The message data as a byte string.</returns>
+ public static ByteString ToByteString(this IMessage message)
+ {
+ ProtoPreconditions.CheckNotNull(message, "message");
+ return ByteString.AttachBytes(message.ToByteArray());
+ }
+ }
+}