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Diffstat (limited to 'dotnet/client-010/client/transport/util/ByteEncoder.cs')
| -rw-r--r-- | dotnet/client-010/client/transport/util/ByteEncoder.cs | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/dotnet/client-010/client/transport/util/ByteEncoder.cs b/dotnet/client-010/client/transport/util/ByteEncoder.cs new file mode 100644 index 0000000000..873ca75688 --- /dev/null +++ b/dotnet/client-010/client/transport/util/ByteEncoder.cs @@ -0,0 +1,218 @@ +/* +* +* Licensed to the Apache Software Foundation (ASF) under one +* or more contributor license agreements. See the NOTICE file +* distributed with this work for additional information +* regarding copyright ownership. The ASF licenses this file +* to you under the Apache License, Version 2.0 (the +* "License"); you may not use this file except in compliance +* with the License. You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, +* software distributed under the License is distributed on an +* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +* KIND, either express or implied. See the License for the +* specific language governing permissions and limitations +* under the License. +* +*/ +using System; + +namespace org.apache.qpid.transport.util +{ + public static class ByteEncoder + { + #region Endian conversion helper routines + /// <summary> + /// Returns the value encoded in Big Endian (PPC, XDR) format. + /// </summary> + /// <param name="value">Value to encode.</param> + /// <returns>Big-endian encoded value.</returns> + public static Int32 GetBigEndian(Int32 value) + { + if (BitConverter.IsLittleEndian) + { + return SwapByteOrder(value); + } + return value; + } + + /// <summary> + /// Returns the value encoded in Big Endian (PPC, XDR) format. + /// </summary> + /// <param name="value">Value to encode.</param> + /// <returns>Big-endian encoded value.</returns> + public static UInt16 GetBigEndian(UInt16 value) + { + if (BitConverter.IsLittleEndian) + { + return SwapByteOrder(value); + } + return value; + } + + /// <summary> + /// Returns the value encoded in Big Endian (PPC, XDR) format. + /// </summary> + /// <param name="value">Value to encode.</param> + /// <returns>Big-endian encoded value.</returns> + public static UInt32 GetBigEndian(UInt32 value) + { + if (BitConverter.IsLittleEndian) + { + return SwapByteOrder(value); + } + return value; + } + + /// <summary> + /// Returns the value encoded in Big Endian (PPC, XDR) format. + /// </summary> + /// <param name="value">Value to encode.</param> + /// <returns>Big-endian encoded value.</returns> + public static long GetBigEndian(long value) + { + if (BitConverter.IsLittleEndian) + { + return SwapByteOrder(value); + } + return value; + } + + public static double GetBigEndian(double value) + { + if (BitConverter.IsLittleEndian) + { + return SwapByteOrder(value); + } + return value; + } + + /// <summary> + /// Returns the value encoded in Little Endian (x86, NDR) format. + /// </summary> + /// <param name="value">Value to encode.</param> + /// <returns>Little-endian encoded value.</returns> + public static Int32 GetLittleEndian(Int32 value) + { + if (BitConverter.IsLittleEndian) + { + return value; + } + return SwapByteOrder(value); + } + + /// <summary> + /// Returns the value encoded in Little Endian (x86, NDR) format. + /// </summary> + /// <param name="value">Value to encode.</param> + /// <returns>Little-endian encoded value.</returns> + public static UInt32 GetLittleEndian(UInt32 value) + { + if (BitConverter.IsLittleEndian) + { + return value; + } + return SwapByteOrder(value); + } + + /// <summary> + /// Returns the value encoded in Little Endian (x86, NDR) format. + /// </summary> + /// <param name="value">Value to encode.</param> + /// <returns>Little-endian encoded value.</returns> + public static UInt16 GetLittleEndian(UInt16 value) + { + if (BitConverter.IsLittleEndian) + { + return value; + } + return SwapByteOrder(value); + } + + /// <summary> + /// Returns the value encoded in Little Endian (x86, NDR) format. + /// </summary> + /// <param name="value">Value to encode.</param> + /// <returns>Little-endian encoded value.</returns> + public static long GetLittleEndian(long value) + { + if (BitConverter.IsLittleEndian) + { + return value; + } + return SwapByteOrder(value); + } + + public static double GetLittleEndian(double value) + { + if (BitConverter.IsLittleEndian) + { + return value; + } + return SwapByteOrder(value); + } + + /// <summary> + /// Swaps the Byte order of an <see cref="Int32"/>. + /// </summary> + /// <param name="value"><see cref="Int32"/> to swap the bytes of.</param> + /// <returns>Byte order swapped <see cref="Int32"/>.</returns> + private static Int32 SwapByteOrder(Int32 value) + { + Int32 swapped = (Int32)((0x000000FF) & (value >> 24) + | (0x0000FF00) & (value >> 8) + | (0x00FF0000) & (value << 8) + | (0xFF000000) & (value << 24)); + return swapped; + } + + /// <summary> + /// Swaps the byte order of a <see cref="UInt16"/>. + /// </summary> + /// <param name="value"><see cref="UInt16"/> to swap the bytes of.</param> + /// <returns>Byte order swapped <see cref="UInt16"/>.</returns> + private static UInt16 SwapByteOrder(UInt16 value) + { + return (UInt16)((0x00FF & (value >> 8)) + | (0xFF00 & (value << 8))); + } + + /// <summary> + /// Swaps the byte order of a <see cref="UInt32"/>. + /// </summary> + /// <param name="value"><see cref="UInt32"/> to swap the bytes of.</param> + /// <returns>Byte order swapped <see cref="UInt32"/>.</returns> + private static UInt32 SwapByteOrder(UInt32 value) + { + UInt32 swapped = ((0x000000FF) & (value >> 24) + | (0x0000FF00) & (value >> 8) + | (0x00FF0000) & (value << 8) + | (0xFF000000) & (value << 24)); + return swapped; + } + + /// <summary> + /// Swaps the byte order of a <see cref="Double"/> (double precision IEEE 754) + /// </summary> + /// <param name="value"><see cref="Double"/> to swap.</param> + /// <returns>Byte order swapped <see cref="Double"/> value.</returns> + private static long SwapByteOrder(long value) + { + Byte[] buffer = BitConverter.GetBytes(value); + Array.Reverse(buffer, 0, buffer.Length); + return BitConverter.ToInt64(buffer, 0); + } + + private static double SwapByteOrder(double value) + { + Byte[] buffer = BitConverter.GetBytes(value); + Array.Reverse(buffer, 0, buffer.Length); + return BitConverter.ToDouble(buffer,0) ; + } + #endregion + } + +} |