645 lines
22 KiB
C#
645 lines
22 KiB
C#
//
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// BigEndianBitConverter.cs
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//
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// Author:
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// Natalia Portillo <claunia@claunia.com>
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//
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// Copyright (c) 2015 © Claunia.com
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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using System.Linq;
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using System;
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namespace SubChannelDecoder
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{
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/// <summary>
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/// Converts base data types to an array of bytes, and an array of bytes to base
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/// data types.
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/// All info taken from the meta data of System.BitConverter. This implementation
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/// allows for Endianness consideration.
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///</summary>
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public static class BigEndianBitConverter
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{
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/// <summary>
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/// Indicates the byte order ("endianess") in which data is stored in this computer
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/// architecture.
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///</summary>
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public static bool IsLittleEndian { get; set; }
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// should default to false, which is what we want for Empire
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/// <summary>
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/// Converts the specified double-precision floating point number to a 64-bit
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/// signed integer.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// A 64-bit signed integer whose value is equivalent to value.
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///</summary>
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public static long DoubleToInt64Bits(double value)
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{
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throw new NotImplementedException();
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}
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///
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/// <summary>
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/// Returns the specified Boolean value as an array of bytes.
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///
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/// Parameters:
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/// value:
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/// A Boolean value.
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///
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/// Returns:
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/// An array of bytes with length 1.
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///</summary>
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public static byte[] GetBytes(bool value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified Unicode character value as an array of bytes.
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///
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/// Parameters:
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/// value:
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/// A character to convert.
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///
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/// Returns:
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/// An array of bytes with length 2.
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///</summary>
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public static byte[] GetBytes(char value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified double-precision floating point value as an array of
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/// bytes.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 8.
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///</summary>
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public static byte[] GetBytes(double value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified single-precision floating point value as an array of
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/// bytes.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 4.
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///</summary>
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public static byte[] GetBytes(float value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified 32-bit signed integer value as an array of bytes.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 4.
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///</summary>
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public static byte[] GetBytes(int value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified 64-bit signed integer value as an array of bytes.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 8.
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///</summary>
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public static byte[] GetBytes(long value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified 16-bit signed integer value as an array of bytes.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 2.
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///</summary>
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public static byte[] GetBytes(short value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified 32-bit unsigned integer value as an array of bytes.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 4.
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///</summary>
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//[CLSCompliant(false)]
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public static byte[] GetBytes(uint value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified 64-bit unsigned integer value as an array of bytes.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 8.
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///</summary>
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//[CLSCompliant(false)]
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public static byte[] GetBytes(ulong value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Returns the specified 16-bit unsigned integer value as an array of bytes.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// An array of bytes with length 2.
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///</summary>
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public static byte[] GetBytes(ushort value)
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{
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return !IsLittleEndian ? BitConverter.GetBytes(value) : BitConverter.GetBytes(value).Reverse().ToArray();
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}
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///
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/// <summary>
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/// Converts the specified 64-bit signed integer to a double-precision floating
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/// point number.
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///
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/// Parameters:
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/// value:
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/// The number to convert.
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///
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/// Returns:
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/// A double-precision floating point number whose value is equivalent to value.
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///</summary>
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public static double Int64BitsToDouble(long value)
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{
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throw new NotImplementedException();
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}
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///
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/// <summary>
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/// Returns a Boolean value converted from one byte at a specified position in
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/// a byte array.
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///
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/// Parameters:
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/// value:
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/// An array of bytes.
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///
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/// startIndex:
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/// The starting position within value.
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///
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/// Returns:
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/// true if the byte at startIndex in value is nonzero; otherwise, false.
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///
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/// Exceptions:
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/// System.ArgumentNullException:
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/// value is null.
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///
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/// System.ArgumentOutOfRangeException:
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/// startIndex is less than zero or greater than the length of value minus 1.
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///</summary>
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public static bool ToBoolean(byte[] value, int startIndex)
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{
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throw new NotImplementedException();
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}
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///
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/// <summary>
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/// Returns a Unicode character converted from two bytes at a specified position
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/// in a byte array.
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///
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/// Parameters:
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/// value:
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/// An array.
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///
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/// startIndex:
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/// The starting position within value.
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///
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/// Returns:
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/// A character formed by two bytes beginning at startIndex.
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///
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/// Exceptions:
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/// System.ArgumentException:
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/// startIndex equals the length of value minus 1.
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///
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/// System.ArgumentNullException:
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/// value is null.
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///
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/// System.ArgumentOutOfRangeException:
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/// startIndex is less than zero or greater than the length of value minus 1.
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///</summary>
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public static char ToChar(byte[] value, int startIndex)
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{
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throw new NotImplementedException();
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}
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///
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/// <summary>
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/// Returns a double-precision floating point number converted from eight bytes
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/// at a specified position in a byte array.
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///
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/// Parameters:
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/// value:
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/// An array of bytes.
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///
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/// startIndex:
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/// The starting position within value.
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///
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/// Returns:
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/// A double precision floating point number formed by eight bytes beginning
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/// at startIndex.
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///
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/// Exceptions:
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/// System.ArgumentException:
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/// startIndex is greater than or equal to the length of value minus 7, and is
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/// less than or equal to the length of value minus 1.
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///
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/// System.ArgumentNullException:
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/// value is null.
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///
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/// System.ArgumentOutOfRangeException:
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/// startIndex is less than zero or greater than the length of value minus 1.
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///</summary>
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public static double ToDouble(byte[] value, int startIndex)
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{
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throw new NotImplementedException();
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}
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///
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/// <summary>
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/// Returns a 16-bit signed integer converted from two bytes at a specified position
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/// in a byte array.
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///
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/// Parameters:
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/// value:
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/// An array of bytes.
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///
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/// startIndex:
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/// The starting position within value.
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///
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/// Returns:
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/// A 16-bit signed integer formed by two bytes beginning at startIndex.
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///
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/// Exceptions:
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/// System.ArgumentException:
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/// startIndex equals the length of value minus 1.
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///
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/// System.ArgumentNullException:
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/// value is null.
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///
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/// System.ArgumentOutOfRangeException:
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/// startIndex is less than zero or greater than the length of value minus 1.
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///</summary>
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public static short ToInt16(byte[] value, int startIndex)
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{
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return !IsLittleEndian ? BitConverter.ToInt16(value, startIndex) : BitConverter.ToInt16(value.Reverse().ToArray(), value.Length - sizeof(Int16) - startIndex);
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}
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///
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/// <summary>
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/// Returns a 32-bit signed integer converted from four bytes at a specified
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/// position in a byte array.
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///
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/// Parameters:
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/// value:
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/// An array of bytes.
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///
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/// startIndex:
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/// The starting position within value.
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///
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/// Returns:
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/// A 32-bit signed integer formed by four bytes beginning at startIndex.
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///
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/// Exceptions:
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/// System.ArgumentException:
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/// startIndex is greater than or equal to the length of value minus 3, and is
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/// less than or equal to the length of value minus 1.
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///
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/// System.ArgumentNullException:
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/// value is null.
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///
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/// System.ArgumentOutOfRangeException:
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/// startIndex is less than zero or greater than the length of value minus 1.
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///</summary>
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public static int ToInt32(byte[] value, int startIndex)
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{
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return !IsLittleEndian ? BitConverter.ToInt32(value, startIndex) : BitConverter.ToInt32(value.Reverse().ToArray(), value.Length - sizeof(Int32) - startIndex);
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}
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///
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/// <summary>
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/// Returns a 64-bit signed integer converted from eight bytes at a specified
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/// position in a byte array.
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///
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/// Parameters:
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/// value:
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/// An array of bytes.
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///
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/// startIndex:
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/// The starting position within value.
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///
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/// Returns:
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/// A 64-bit signed integer formed by eight bytes beginning at startIndex.
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///
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/// Exceptions:
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/// System.ArgumentException:
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/// startIndex is greater than or equal to the length of value minus 7, and is
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/// less than or equal to the length of value minus 1.
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///
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/// System.ArgumentNullException:
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/// value is null.
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///
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/// System.ArgumentOutOfRangeException:
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/// startIndex is less than zero or greater than the length of value minus 1.
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///</summary>
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public static long ToInt64(byte[] value, int startIndex)
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{
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return !IsLittleEndian ? BitConverter.ToInt64(value, startIndex) : BitConverter.ToInt64(value.Reverse().ToArray(), value.Length - sizeof(Int64) - startIndex);
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}
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///
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/// <summary>
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/// Returns a single-precision floating point number converted from four bytes
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/// at a specified position in a byte array.
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///
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/// Parameters:
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/// value:
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/// An array of bytes.
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///
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/// startIndex:
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/// The starting position within value.
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///
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/// Returns:
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/// A single-precision floating point number formed by four bytes beginning at
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/// startIndex.
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///
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/// Exceptions:
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/// System.ArgumentException:
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/// startIndex is greater than or equal to the length of value minus 3, and is
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/// less than or equal to the length of value minus 1.
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///
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/// System.ArgumentNullException:
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/// value is null.
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///
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/// System.ArgumentOutOfRangeException:
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/// startIndex is less than zero or greater than the length of value minus 1.
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///</summary>
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public static float ToSingle(byte[] value, int startIndex)
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{
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return !IsLittleEndian ? BitConverter.ToSingle(value, startIndex) : BitConverter.ToSingle(value.Reverse().ToArray(), value.Length - sizeof(Single) - startIndex);
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}
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///
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/// <summary>
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/// Converts the numeric value of each element of a specified array of bytes
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/// to its equivalent hexadecimal string representation.
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///
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/// Parameters:
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/// value:
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/// An array of bytes.
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///
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/// Returns:
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/// A System.String of hexadecimal pairs separated by hyphens, where each pair
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/// represents the corresponding element in value; for example, "7F-2C-4A".
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///
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/// Exceptions:
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/// System.ArgumentNullException:
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/// value is null.
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///</summary>
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public static string ToString(byte[] value)
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{
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return !IsLittleEndian ? BitConverter.ToString(value) : BitConverter.ToString(value.Reverse().ToArray());
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}
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///
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/// <summary>
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/// Converts the numeric value of each element of a specified subarray of bytes
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/// to its equivalent hexadecimal string representation.
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///
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/// Parameters:
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/// value:
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/// An array of bytes.
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///
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/// startIndex:
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/// The starting position within value.
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///
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/// Returns:
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/// A System.String of hexadecimal pairs separated by hyphens, where each pair
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/// represents the corresponding element in a subarray of value; for example,
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/// "7F-2C-4A".
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///
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/// Exceptions:
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/// System.ArgumentNullException:
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/// value is null.
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///
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/// System.ArgumentOutOfRangeException:
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/// startIndex is less than zero or greater than the length of value minus 1.
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///</summary>
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public static string ToString(byte[] value, int startIndex)
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{
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return !IsLittleEndian ? BitConverter.ToString(value, startIndex) : BitConverter.ToString(value.Reverse().ToArray(), startIndex);
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}
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///
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/// <summary>
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/// Converts the numeric value of each element of a specified subarray of bytes
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/// to its equivalent hexadecimal string representation.
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///
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/// Parameters:
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/// value:
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/// An array of bytes.
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///
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/// startIndex:
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/// The starting position within value.
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///
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/// length:
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/// The number of array elements in value to convert.
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///
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/// Returns:
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/// A System.String of hexadecimal pairs separated by hyphens, where each pair
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/// represents the corresponding element in a subarray of value; for example,
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/// "7F-2C-4A".
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///
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/// Exceptions:
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/// System.ArgumentNullException:
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/// value is null.
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///
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/// System.ArgumentOutOfRangeException:
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/// startIndex or length is less than zero. -or- startIndex is greater than
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/// zero and is greater than or equal to the length of value.
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///
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/// System.ArgumentException:
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/// The combination of startIndex and length does not specify a position within
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/// value; that is, the startIndex parameter is greater than the length of value
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/// minus the length parameter.
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///</summary>
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public static string ToString(byte[] value, int startIndex, int length)
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{
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return !IsLittleEndian ? BitConverter.ToString(value, startIndex, length) : BitConverter.ToString(value.Reverse().ToArray(), startIndex, length);
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}
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///
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/// <summary>
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/// Returns a 16-bit unsigned integer converted from two bytes at a specified
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/// position in a byte array.
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///
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/// Parameters:
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/// value:
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/// The array of bytes.
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///
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/// startIndex:
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/// The starting position within value.
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///
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/// Returns:
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/// A 16-bit unsigned integer formed by two bytes beginning at startIndex.
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///
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/// Exceptions:
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/// System.ArgumentException:
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/// startIndex equals the length of value minus 1.
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///
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/// System.ArgumentNullException:
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/// value is null.
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///
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/// System.ArgumentOutOfRangeException:
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/// startIndex is less than zero or greater than the length of value minus 1.
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///</summary>
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public static ushort ToUInt16(byte[] value, int startIndex)
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{
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return !IsLittleEndian ? BitConverter.ToUInt16(value, startIndex) : BitConverter.ToUInt16(value.Reverse().ToArray(), value.Length - sizeof(UInt16) - startIndex);
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}
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///
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/// <summary>
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/// Returns a 32-bit unsigned integer converted from four bytes at a specified
|
|
/// position in a byte array.
|
|
///
|
|
/// Parameters:
|
|
/// value:
|
|
/// An array of bytes.
|
|
///
|
|
/// startIndex:
|
|
/// The starting position within value.
|
|
///
|
|
/// Returns:
|
|
/// A 32-bit unsigned integer formed by four bytes beginning at startIndex.
|
|
///
|
|
/// Exceptions:
|
|
/// System.ArgumentException:
|
|
/// startIndex is greater than or equal to the length of value minus 3, and is
|
|
/// less than or equal to the length of value minus 1.
|
|
///
|
|
/// System.ArgumentNullException:
|
|
/// value is null.
|
|
///
|
|
/// System.ArgumentOutOfRangeException:
|
|
/// startIndex is less than zero or greater than the length of value minus 1.
|
|
///</summary>
|
|
public static uint ToUInt32(byte[] value, int startIndex)
|
|
{
|
|
return !IsLittleEndian ? BitConverter.ToUInt32(value, startIndex) : BitConverter.ToUInt32(value.Reverse().ToArray(), value.Length - sizeof(UInt32) - startIndex);
|
|
}
|
|
|
|
///
|
|
/// <summary>
|
|
/// Returns a 64-bit unsigned integer converted from eight bytes at a specified
|
|
/// position in a byte array.
|
|
///
|
|
/// Parameters:
|
|
/// value:
|
|
/// An array of bytes.
|
|
///
|
|
/// startIndex:
|
|
/// The starting position within value.
|
|
///
|
|
/// Returns:
|
|
/// A 64-bit unsigned integer formed by the eight bytes beginning at startIndex.
|
|
///
|
|
/// Exceptions:
|
|
/// System.ArgumentException:
|
|
/// startIndex is greater than or equal to the length of value minus 7, and is
|
|
/// less than or equal to the length of value minus 1.
|
|
///
|
|
/// System.ArgumentNullException:
|
|
/// value is null.
|
|
///
|
|
/// System.ArgumentOutOfRangeException:
|
|
/// startIndex is less than zero or greater than the length of value minus 1.
|
|
///</summary>
|
|
public static ulong ToUInt64(byte[] value, int startIndex)
|
|
{
|
|
return !IsLittleEndian ? BitConverter.ToUInt64(value, startIndex) : BitConverter.ToUInt64(value.Reverse().ToArray(), value.Length - sizeof(UInt64) - startIndex);
|
|
}
|
|
|
|
public static Guid ToGuid(byte[] value, int startIndex)
|
|
{
|
|
return new Guid(BigEndianBitConverter.ToUInt32(value, 0 + startIndex),
|
|
BigEndianBitConverter.ToUInt16(value, 4 + startIndex),
|
|
BigEndianBitConverter.ToUInt16(value, 6 + startIndex),
|
|
value[8 + startIndex + 0], value[8 + startIndex + 1],
|
|
value[8 + startIndex + 2], value[8 + startIndex + 3],
|
|
value[8 + startIndex + 5], value[8 + startIndex + 5],
|
|
value[8 + startIndex + 6], value[8 + startIndex + 7]);
|
|
}
|
|
}}
|
|
|