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| 1 | +//****************************************************************************************************** | |
| 2 | +// ByteEncoding.cs - Gbtc | |
| 3 | +// | |
| 4 | +// Copyright � 2010, Grid Protection Alliance. All Rights Reserved. | |
| 5 | +// | |
| 6 | +// Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See | |
| 7 | +// the NOTICE file distributed with this work for additional information regarding copyright ownership. | |
| 8 | +// The GPA licenses this file to you under the Eclipse Public License -v 1.0 (the "License"); you may | |
| 9 | +// not use this file except in compliance with the License. You may obtain a copy of the License at: | |
| 10 | +// | |
| 11 | +// http://www.opensource.org/licenses/eclipse-1.0.php | |
| 12 | +// | |
| 13 | +// Unless agreed to in writing, the subject software distributed under the License is distributed on an | |
| 14 | +// "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the | |
| 15 | +// License for the specific language governing permissions and limitations. | |
| 16 | +// | |
| 17 | +// Code Modification History: | |
| 18 | +// ---------------------------------------------------------------------------------------------------- | |
| 19 | +// 01/25/2008 - J. Ritchie Carroll | |
| 20 | +// Initial version of source generated. | |
| 21 | +// 09/14/2009 - Stephen C. Wills | |
| 22 | +// Added new header and license agreement. | |
| 23 | +// 10/8/2012 - Danyelle Gilliam | |
| 24 | +// Modified Header | |
| 25 | +// | |
| 26 | +//****************************************************************************************************** | |
| 27 | + | |
| 28 | + | |
| 29 | + | |
| 30 | + | |
| 31 | +#region [ Contributor License Agreements ] | |
| 32 | + | |
| 33 | +/**************************************************************************\ | |
| 34 | + Copyright � 2009 - J. Ritchie Carroll | |
| 35 | + All rights reserved. | |
| 36 | + | |
| 37 | + Redistribution and use in source and binary forms, with or without | |
| 38 | + modification, are permitted provided that the following conditions | |
| 39 | + are met: | |
| 40 | + | |
| 41 | + * Redistributions of source code must retain the above copyright | |
| 42 | + notice, this list of conditions and the following disclaimer. | |
| 43 | + | |
| 44 | + * Redistributions in binary form must reproduce the above | |
| 45 | + copyright notice, this list of conditions and the following | |
| 46 | + disclaimer in the documentation and/or other materials provided | |
| 47 | + with the distribution. | |
| 48 | + | |
| 49 | + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY | |
| 50 | + EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 51 | + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 52 | + PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 53 | + CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 54 | + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 55 | + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 56 | + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 57 | + OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 58 | + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 59 | + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 60 | + | |
| 61 | +\**************************************************************************/ | |
| 62 | + | |
| 63 | +#endregion | |
| 64 | + | |
| 65 | +using System; | |
| 66 | +using System.ComponentModel; | |
| 67 | +using System.Text; | |
| 68 | +using System.Text.RegularExpressions; | |
| 69 | + | |
| 70 | +namespace GSF | |
| 71 | +{ | |
| 72 | + /// <summary> | |
| 73 | + /// Defines a set of methods used to convert byte buffers to and from user presentable data formats. | |
| 74 | + /// </summary> | |
| 75 | + public abstract class ByteEncoding | |
| 76 | + { | |
| 77 | + #region [ Members ] | |
| 78 | + | |
| 79 | + // Nested Types | |
| 80 | + #region [ Hexadecimal Encoding Class ] | |
| 81 | + | |
| 82 | + /// <summary> | |
| 83 | + /// Handles conversion of byte buffers to and from a hexadecimal data format. | |
| 84 | + /// </summary> | |
| 85 | + [EditorBrowsable(EditorBrowsableState.Never)] | |
| 86 | + public class HexadecimalEncoding : ByteEncoding | |
| 87 | + { | |
| 88 | + internal HexadecimalEncoding() | |
| 89 | + { | |
| 90 | + // This class is meant for internal instatiation only. | |
| 91 | + } | |
| 92 | + | |
| 93 | + /// <summary>Decodes given string back into a byte buffer.</summary> | |
| 94 | + /// <param name="hexData">Encoded hexadecimal data string to decode.</param> | |
| 95 | + /// <param name="spacingCharacter">Original spacing character that was inserted between encoded bytes.</param> | |
| 96 | + /// <returns>Decoded bytes.</returns> | |
| 97 | + public override byte[] GetBytes(string hexData, char spacingCharacter) | |
| 98 | + { | |
| 99 | + if (!string.IsNullOrEmpty(hexData)) | |
| 100 | + { | |
| 101 | + // Removes spacing characters, if needed. | |
| 102 | + hexData = hexData.Trim(); | |
| 103 | + if (spacingCharacter != NoSpacing) | |
| 104 | + hexData = hexData.Replace(spacingCharacter.ToString(), ""); | |
| 105 | + | |
| 106 | + // Processes the string only if it has data in hex format (Example: 48 65 6C 6C 21). | |
| 107 | + if (Regex.Matches(hexData, "[^a-fA-F0-9]").Count == 0) | |
| 108 | + { | |
| 109 | + // Trims the end of the string to discard any additional characters, if present in the string, | |
| 110 | + // that would prevent the string from being a hex encoded string. | |
| 111 | + // Note: Requires that each character be represented by its 2 character hex value. | |
| 112 | + hexData = hexData.Substring(0, hexData.Length - hexData.Length % 2); | |
| 113 | + | |
| 114 | + byte[] bytes = new byte[hexData.Length / 2]; | |
| 115 | + int index = 0; | |
| 116 | + | |
| 117 | + for (int x = 0; x <= hexData.Length - 1; x += 2) | |
| 118 | + { | |
| 119 | + bytes[index] = Convert.ToByte(hexData.Substring(x, 2), 16); | |
| 120 | + index++; | |
| 121 | + } | |
| 122 | + | |
| 123 | + return bytes; | |
| 124 | + } | |
| 125 | + else | |
| 126 | + { | |
| 127 | + throw new ArgumentException("Input string is not a valid hex encoded string - invalid characters encountered", "hexData"); | |
| 128 | + } | |
| 129 | + } | |
| 130 | + else | |
| 131 | + { | |
| 132 | + throw new ArgumentNullException("hexData", "Input string cannot be null or empty"); | |
| 133 | + } | |
| 134 | + } | |
| 135 | + | |
| 136 | + /// <summary>Encodes given buffer into a user presentable representation.</summary> | |
| 137 | + /// <param name="bytes">Bytes to encode.</param> | |
| 138 | + /// <param name="offset">Offset into buffer to begin encoding.</param> | |
| 139 | + /// <param name="length">Length of buffer to encode.</param> | |
| 140 | + /// <param name="spacingCharacter">Spacing character to place between encoded bytes.</param> | |
| 141 | + /// <returns>String of encoded bytes.</returns> | |
| 142 | + public override string GetString(byte[] bytes, int offset, int length, char spacingCharacter) | |
| 143 | + { | |
| 144 | + return BytesToString(bytes, offset, length, spacingCharacter, "X2"); | |
| 145 | + } | |
| 146 | + } | |
| 147 | + | |
| 148 | + #endregion | |
| 149 | + | |
| 150 | + #region [ Decimal Encoding Class ] | |
| 151 | + | |
| 152 | + /// <summary> | |
| 153 | + /// Handles conversion of byte buffers to and from a decimal data format. | |
| 154 | + /// </summary> | |
| 155 | + [EditorBrowsable(EditorBrowsableState.Never)] | |
| 156 | + public class DecimalEncoding : ByteEncoding | |
| 157 | + { | |
| 158 | + internal DecimalEncoding() | |
| 159 | + { | |
| 160 | + // This class is meant for internal instatiation only. | |
| 161 | + } | |
| 162 | + | |
| 163 | + /// <summary>Decodes given string back into a byte buffer.</summary> | |
| 164 | + /// <param name="decData">Encoded decimal data string to decode.</param> | |
| 165 | + /// <param name="spacingCharacter">Original spacing character that was inserted between encoded bytes.</param> | |
| 166 | + /// <returns>Decoded bytes.</returns> | |
| 167 | + public override byte[] GetBytes(string decData, char spacingCharacter) | |
| 168 | + { | |
| 169 | + if (!string.IsNullOrEmpty(decData)) | |
| 170 | + { | |
| 171 | + // Removes spacing characters, if needed. | |
| 172 | + decData = decData.Trim(); | |
| 173 | + if (spacingCharacter != NoSpacing) | |
| 174 | + decData = decData.Replace(spacingCharacter.ToString(), ""); | |
| 175 | + | |
| 176 | + // Processes the string only if it has data in decimal format (Example: 072 101 108 108 033). | |
| 177 | + if (Regex.Matches(decData, "[^0-9]").Count == 0) | |
| 178 | + { | |
| 179 | + // Trims the end of the string to discard any additional characters, if present in the | |
| 180 | + // string, that would prevent the string from being an integer encoded string. | |
| 181 | + // Note: Requires that each character be represented by its 3 character decimal value. | |
| 182 | + decData = decData.Substring(0, decData.Length - decData.Length % 3); | |
| 183 | + | |
| 184 | + byte[] bytes = new byte[decData.Length / 3]; | |
| 185 | + int index = 0; | |
| 186 | + | |
| 187 | + for (int x = 0; x <= decData.Length - 1; x += 3) | |
| 188 | + { | |
| 189 | + bytes[index] = Convert.ToByte(decData.Substring(x, 3), 10); | |
| 190 | + index++; | |
| 191 | + } | |
| 192 | + | |
| 193 | + return bytes; | |
| 194 | + } | |
| 195 | + else | |
| 196 | + { | |
| 197 | + throw new ArgumentException("Input string is not a valid decimal encoded string - invalid characters encountered", "decData"); | |
| 198 | + } | |
| 199 | + } | |
| 200 | + else | |
| 201 | + { | |
| 202 | + throw new ArgumentNullException("decData", "Input string cannot be null or empty"); | |
| 203 | + } | |
| 204 | + } | |
| 205 | + | |
| 206 | + /// <summary>Encodes given buffer into a user presentable representation.</summary> | |
| 207 | + /// <param name="bytes">Bytes to encode.</param> | |
| 208 | + /// <param name="offset">Offset into buffer to begin encoding.</param> | |
| 209 | + /// <param name="length">Length of buffer to encode.</param> | |
| 210 | + /// <param name="spacingCharacter">Spacing character to place between encoded bytes.</param> | |
| 211 | + /// <returns>String of encoded bytes.</returns> | |
| 212 | + public override string GetString(byte[] bytes, int offset, int length, char spacingCharacter) | |
| 213 | + { | |
| 214 | + return BytesToString(bytes, offset, length, spacingCharacter, "D3"); | |
| 215 | + } | |
| 216 | + } | |
| 217 | + | |
| 218 | + #endregion | |
| 219 | + | |
| 220 | + #region [ Binary Encoding Class ] | |
| 221 | + | |
| 222 | + /// <summary> | |
| 223 | + /// Handles conversion of byte buffers to and from a binary (i.e., 0 and 1's) data format. | |
| 224 | + /// </summary> | |
| 225 | + [EditorBrowsable(EditorBrowsableState.Never)] | |
| 226 | + public class BinaryEncoding : ByteEncoding | |
| 227 | + { | |
| 228 | + private string[] m_byteImages; | |
| 229 | + private bool m_reverse; | |
| 230 | + | |
| 231 | + // This class is meant for internal instantiation only. | |
| 232 | + internal BinaryEncoding(Endianness targetEndianness) | |
| 233 | + { | |
| 234 | + if (targetEndianness == Endianness.BigEndian) | |
| 235 | + { | |
| 236 | + if (BitConverter.IsLittleEndian) | |
| 237 | + { | |
| 238 | + // If OS is little endian and we want big endian, this reverses the bit order. | |
| 239 | + m_reverse = true; | |
| 240 | + } | |
| 241 | + else | |
| 242 | + { | |
| 243 | + // If OS is big endian and we want big endian, this keeps the OS bit order. | |
| 244 | + m_reverse = false; | |
| 245 | + } | |
| 246 | + } | |
| 247 | + else | |
| 248 | + { | |
| 249 | + if (BitConverter.IsLittleEndian) | |
| 250 | + { | |
| 251 | + // If OS is little endian and we want little endian, this keeps OS bit order. | |
| 252 | + m_reverse = false; | |
| 253 | + } | |
| 254 | + else | |
| 255 | + { | |
| 256 | + // If OS is big endian and we want little endian, this reverses the bit order. | |
| 257 | + m_reverse = true; | |
| 258 | + } | |
| 259 | + } | |
| 260 | + } | |
| 261 | + | |
| 262 | + /// <summary>Decodes given string back into a byte buffer.</summary> | |
| 263 | + /// <param name="binaryData">Encoded binary data string to decode.</param> | |
| 264 | + /// <param name="spacingCharacter">Original spacing character that was inserted between encoded bytes.</param> | |
| 265 | + /// <returns>Decoded bytes.</returns> | |
| 266 | + public override byte[] GetBytes(string binaryData, char spacingCharacter) | |
| 267 | + { | |
| 268 | + if (!string.IsNullOrEmpty(binaryData)) | |
| 269 | + { | |
| 270 | + // Removes spacing characters, if needed. | |
| 271 | + binaryData = binaryData.Trim(); | |
| 272 | + if (spacingCharacter != NoSpacing) | |
| 273 | + binaryData = binaryData.Replace(spacingCharacter.ToString(), ""); | |
| 274 | + | |
| 275 | + // Processes the string only if it has data in binary format (Example: 01010110 1010101). | |
| 276 | + if (Regex.Matches(binaryData, "[^0-1]").Count == 0) | |
| 277 | + { | |
| 278 | + // Trims the end of the string to discard any additional characters, if present in the | |
| 279 | + // string, that would prevent the string from being a binary encoded string. | |
| 280 | + // Note: Requires each character be represented by its 8 character binary value. | |
| 281 | + binaryData = binaryData.Substring(0, binaryData.Length - binaryData.Length % 8); | |
| 282 | + | |
| 283 | + byte[] bytes = new byte[binaryData.Length / 8]; | |
| 284 | + int index = 0; | |
| 285 | + | |
| 286 | + for (int x = 0; x <= binaryData.Length - 1; x += 8) | |
| 287 | + { | |
| 288 | + bytes[index] = (byte)Bits.Nil; | |
| 289 | + | |
| 290 | + if (m_reverse) | |
| 291 | + { | |
| 292 | + if (binaryData[x + 7] == '1') | |
| 293 | + bytes[index] = bytes[index].SetBits(Bits.Bit00); | |
| 294 | + if (binaryData[x + 6] == '1') | |
| 295 | + bytes[index] = bytes[index].SetBits(Bits.Bit01); | |
| 296 | + if (binaryData[x + 5] == '1') | |
| 297 | + bytes[index] = bytes[index].SetBits(Bits.Bit02); | |
| 298 | + if (binaryData[x + 4] == '1') | |
| 299 | + bytes[index] = bytes[index].SetBits(Bits.Bit03); | |
| 300 | + if (binaryData[x + 3] == '1') | |
| 301 | + bytes[index] = bytes[index].SetBits(Bits.Bit04); | |
| 302 | + if (binaryData[x + 2] == '1') | |
| 303 | + bytes[index] = bytes[index].SetBits(Bits.Bit05); | |
| 304 | + if (binaryData[x + 1] == '1') | |
| 305 | + bytes[index] = bytes[index].SetBits(Bits.Bit06); | |
| 306 | + if (binaryData[x + 0] == '1') | |
| 307 | + bytes[index] = bytes[index].SetBits(Bits.Bit07); | |
| 308 | + } | |
| 309 | + else | |
| 310 | + { | |
| 311 | + if (binaryData[x + 0] == '1') | |
| 312 | + bytes[index] = bytes[index].SetBits(Bits.Bit00); | |
| 313 | + if (binaryData[x + 1] == '1') | |
| 314 | + bytes[index] = bytes[index].SetBits(Bits.Bit01); | |
| 315 | + if (binaryData[x + 2] == '1') | |
| 316 | + bytes[index] = bytes[index].SetBits(Bits.Bit02); | |
| 317 | + if (binaryData[x + 3] == '1') | |
| 318 | + bytes[index] = bytes[index].SetBits(Bits.Bit03); | |
| 319 | + if (binaryData[x + 4] == '1') | |
| 320 | + bytes[index] = bytes[index].SetBits(Bits.Bit04); | |
| 321 | + if (binaryData[x + 5] == '1') | |
| 322 | + bytes[index] = bytes[index].SetBits(Bits.Bit05); | |
| 323 | + if (binaryData[x + 6] == '1') | |
| 324 | + bytes[index] = bytes[index].SetBits(Bits.Bit06); | |
| 325 | + if (binaryData[x + 7] == '1') | |
| 326 | + bytes[index] = bytes[index].SetBits(Bits.Bit07); | |
| 327 | + } | |
| 328 | + | |
| 329 | + index++; | |
| 330 | + } | |
| 331 | + | |
| 332 | + return bytes; | |
| 333 | + } | |
| 334 | + else | |
| 335 | + { | |
| 336 | + throw new ArgumentException("Input string is not a valid binary encoded string - invalid characters encountered", "binaryData"); | |
| 337 | + } | |
| 338 | + } | |
| 339 | + else | |
| 340 | + { | |
| 341 | + throw new ArgumentNullException("binaryData", "Input string cannot be null or empty"); | |
| 342 | + } | |
| 343 | + } | |
| 344 | + | |
| 345 | + /// <summary>Encodes given buffer into a user presentable representation.</summary> | |
| 346 | + /// <param name="bytes">Bytes to encode.</param> | |
| 347 | + /// <param name="offset">Offset into buffer to begin encoding.</param> | |
| 348 | + /// <param name="length">Length of buffer to encode.</param> | |
| 349 | + /// <param name="spacingCharacter">Spacing character to place between encoded bytes.</param> | |
| 350 | + /// <returns>String of encoded bytes.</returns> | |
| 351 | + public override string GetString(byte[] bytes, int offset, int length, char spacingCharacter) | |
| 352 | + { | |
| 353 | + if ((object)bytes == null) | |
| 354 | + throw new ArgumentNullException("bytes", "Input buffer cannot be null"); | |
| 355 | + | |
| 356 | + // Initializes byte image array on first call for speed in future calls. | |
| 357 | + if ((object)m_byteImages == null) | |
| 358 | + { | |
| 359 | + StringBuilder byteImage; | |
| 360 | + | |
| 361 | + m_byteImages = new string[256]; | |
| 362 | + | |
| 363 | + for (int imageByte = byte.MinValue; imageByte <= byte.MaxValue; imageByte++) | |
| 364 | + { | |
| 365 | + byteImage = new StringBuilder(); | |
| 366 | + | |
| 367 | + if (m_reverse) | |
| 368 | + { | |
| 369 | + if (imageByte.CheckBits(Bits.Bit07)) | |
| 370 | + byteImage.Append('1'); | |
| 371 | + else | |
| 372 | + byteImage.Append('0'); | |
| 373 | + if (imageByte.CheckBits(Bits.Bit06)) | |
| 374 | + byteImage.Append('1'); | |
| 375 | + else | |
| 376 | + byteImage.Append('0'); | |
| 377 | + if (imageByte.CheckBits(Bits.Bit05)) | |
| 378 | + byteImage.Append('1'); | |
| 379 | + else | |
| 380 | + byteImage.Append('0'); | |
| 381 | + if (imageByte.CheckBits(Bits.Bit04)) | |
| 382 | + byteImage.Append('1'); | |
| 383 | + else | |
| 384 | + byteImage.Append('0'); | |
| 385 | + if (imageByte.CheckBits(Bits.Bit03)) | |
| 386 | + byteImage.Append('1'); | |
| 387 | + else | |
| 388 | + byteImage.Append('0'); | |
| 389 | + if (imageByte.CheckBits(Bits.Bit02)) | |
| 390 | + byteImage.Append('1'); | |
| 391 | + else | |
| 392 | + byteImage.Append('0'); | |
| 393 | + if (imageByte.CheckBits(Bits.Bit01)) | |
| 394 | + byteImage.Append('1'); | |
| 395 | + else | |
| 396 | + byteImage.Append('0'); | |
| 397 | + if (imageByte.CheckBits(Bits.Bit00)) | |
| 398 | + byteImage.Append('1'); | |
| 399 | + else | |
| 400 | + byteImage.Append('0'); | |
| 401 | + } | |
| 402 | + else | |
| 403 | + { | |
| 404 | + if (imageByte.CheckBits(Bits.Bit00)) | |
| 405 | + byteImage.Append('1'); | |
| 406 | + else | |
| 407 | + byteImage.Append('0'); | |
| 408 | + if (imageByte.CheckBits(Bits.Bit01)) | |
| 409 | + byteImage.Append('1'); | |
| 410 | + else | |
| 411 | + byteImage.Append('0'); | |
| 412 | + if (imageByte.CheckBits(Bits.Bit02)) | |
| 413 | + byteImage.Append('1'); | |
| 414 | + else | |
| 415 | + byteImage.Append('0'); | |
| 416 | + if (imageByte.CheckBits(Bits.Bit03)) | |
| 417 | + byteImage.Append('1'); | |
| 418 | + else | |
| 419 | + byteImage.Append('0'); | |
| 420 | + if (imageByte.CheckBits(Bits.Bit04)) | |
| 421 | + byteImage.Append('1'); | |
| 422 | + else | |
| 423 | + byteImage.Append('0'); | |
| 424 | + if (imageByte.CheckBits(Bits.Bit05)) | |
| 425 | + byteImage.Append('1'); | |
| 426 | + else | |
| 427 | + byteImage.Append('0'); | |
| 428 | + if (imageByte.CheckBits(Bits.Bit06)) | |
| 429 | + byteImage.Append('1'); | |
| 430 | + else | |
| 431 | + byteImage.Append('0'); | |
| 432 | + if (imageByte.CheckBits(Bits.Bit07)) | |
| 433 | + byteImage.Append('1'); | |
| 434 | + else | |
| 435 | + byteImage.Append('0'); | |
| 436 | + } | |
| 437 | + | |
| 438 | + m_byteImages[imageByte] = byteImage.ToString(); | |
| 439 | + } | |
| 440 | + } | |
| 441 | + | |
| 442 | + StringBuilder binaryImage = new StringBuilder(); | |
| 443 | + | |
| 444 | + for (int x = 0; x < length; x++) | |
| 445 | + { | |
| 446 | + if (spacingCharacter != NoSpacing && x > 0) | |
| 447 | + binaryImage.Append(spacingCharacter); | |
| 448 | + binaryImage.Append(m_byteImages[bytes[offset + x]]); | |
| 449 | + } | |
| 450 | + | |
| 451 | + return binaryImage.ToString(); | |
| 452 | + } | |
| 453 | + } | |
| 454 | + | |
| 455 | + #endregion | |
| 456 | + | |
| 457 | + #region [ Base64 Encoding Class ] | |
| 458 | + | |
| 459 | + /// <summary> | |
| 460 | + /// Handles conversion of byte buffers to and from a base64 data format. | |
| 461 | + /// </summary> | |
| 462 | + [EditorBrowsable(EditorBrowsableState.Never)] | |
| 463 | + public class Base64Encoding : ByteEncoding | |
| 464 | + { | |
| 465 | + internal Base64Encoding() | |
| 466 | + { | |
| 467 | + // This class is meant for internal instantiation only. | |
| 468 | + } | |
| 469 | + | |
| 470 | + /// <summary>Decodes given string back into a byte buffer.</summary> | |
| 471 | + /// <param name="binaryData">Encoded binary data string to decode.</param> | |
| 472 | + /// <param name="spacingCharacter">Original spacing character that was inserted between encoded bytes.</param> | |
| 473 | + /// <returns>Decoded bytes.</returns> | |
| 474 | + public override byte[] GetBytes(string binaryData, char spacingCharacter) | |
| 475 | + { | |
| 476 | + // Removes spacing characters, if needed. | |
| 477 | + binaryData = binaryData.Trim(); | |
| 478 | + if (spacingCharacter != NoSpacing) | |
| 479 | + binaryData = binaryData.Replace(spacingCharacter.ToString(), ""); | |
| 480 | + return Convert.FromBase64String(binaryData); | |
| 481 | + } | |
| 482 | + | |
| 483 | + /// <summary>Encodes given buffer into a user presentable representation.</summary> | |
| 484 | + /// <param name="bytes">Bytes to encode.</param> | |
| 485 | + /// <param name="offset">Offset into buffer to begin encoding.</param> | |
| 486 | + /// <param name="length">Length of buffer to encode.</param> | |
| 487 | + /// <param name="spacingCharacter">Spacing character to place between encoded bytes.</param> | |
| 488 | + /// <returns>String of encoded bytes.</returns> | |
| 489 | + public override string GetString(byte[] bytes, int offset, int length, char spacingCharacter) | |
| 490 | + { | |
| 491 | + if ((object)bytes == null) | |
| 492 | + throw new ArgumentNullException("bytes", "Input buffer cannot be null"); | |
| 493 | + | |
| 494 | + string base64String = Convert.ToBase64String(bytes, offset, length); | |
| 495 | + | |
| 496 | + if (spacingCharacter == NoSpacing) | |
| 497 | + { | |
| 498 | + return base64String; | |
| 499 | + } | |
| 500 | + else | |
| 501 | + { | |
| 502 | + StringBuilder base64Image = new StringBuilder(); | |
| 503 | + | |
| 504 | + for (int x = 0; x <= base64String.Length - 1; x++) | |
| 505 | + { | |
| 506 | + if (x > 0) | |
| 507 | + base64Image.Append(spacingCharacter); | |
| 508 | + base64Image.Append(base64String[x]); | |
| 509 | + } | |
| 510 | + | |
| 511 | + return base64Image.ToString(); | |
| 512 | + } | |
| 513 | + } | |
| 514 | + } | |
| 515 | + | |
| 516 | + #endregion | |
| 517 | + | |
| 518 | + #region [ ASCII Encoding Class ] | |
| 519 | + | |
| 520 | + /// <summary> | |
| 521 | + /// Handles conversion of byte buffers to and from a ASCII data format. | |
| 522 | + /// </summary> | |
| 523 | + [EditorBrowsable(EditorBrowsableState.Never)] | |
| 524 | + public class ASCIIEncoding : ByteEncoding | |
| 525 | + { | |
| 526 | + internal ASCIIEncoding() | |
| 527 | + { | |
| 528 | + // This class is meant for internal instantiation only. | |
| 529 | + } | |
| 530 | + | |
| 531 | + /// <summary>Decodes given string back into a byte buffer.</summary> | |
| 532 | + /// <param name="binaryData">Encoded binary data string to decode.</param> | |
| 533 | + /// <param name="spacingCharacter">Original spacing character that was inserted between encoded bytes.</param> | |
| 534 | + /// <returns>Decoded bytes.</returns> | |
| 535 | + public override byte[] GetBytes(string binaryData, char spacingCharacter) | |
| 536 | + { | |
| 537 | + // Removes spacing characters, if needed. | |
| 538 | + binaryData = binaryData.Trim(); | |
| 539 | + if (spacingCharacter != NoSpacing) | |
| 540 | + binaryData = binaryData.Replace(spacingCharacter.ToString(), ""); | |
| 541 | + return Encoding.ASCII.GetBytes(binaryData); | |
| 542 | + } | |
| 543 | + | |
| 544 | + /// <summary>Encodes given buffer into a user presentable representation.</summary> | |
| 545 | + /// <param name="bytes">Bytes to encode.</param> | |
| 546 | + /// <param name="offset">Offset into buffer to begin encoding.</param> | |
| 547 | + /// <param name="length">Length of buffer to encode.</param> | |
| 548 | + /// <param name="spacingCharacter">Spacing character to place between encoded bytes.</param> | |
| 549 | + /// <returns>String of encoded bytes.</returns> | |
| 550 | + public override string GetString(byte[] bytes, int offset, int length, char spacingCharacter) | |
| 551 | + { | |
| 552 | + if ((object)bytes == null) | |
| 553 | + throw new ArgumentNullException("bytes", "Input buffer cannot be null"); | |
| 554 | + | |
| 555 | + string asciiString = Encoding.ASCII.GetString(bytes, offset, length); | |
| 556 | + | |
| 557 | + if (spacingCharacter == NoSpacing) | |
| 558 | + { | |
| 559 | + return asciiString; | |
| 560 | + } | |
| 561 | + else | |
| 562 | + { | |
| 563 | + StringBuilder asciiImage = new StringBuilder(); | |
| 564 | + | |
| 565 | + for (int x = 0; x <= asciiString.Length - 1; x++) | |
| 566 | + { | |
| 567 | + if (x > 0) | |
| 568 | + asciiImage.Append(spacingCharacter); | |
| 569 | + asciiImage.Append(asciiString[x]); | |
| 570 | + } | |
| 571 | + | |
| 572 | + return asciiImage.ToString(); | |
| 573 | + } | |
| 574 | + } | |
| 575 | + } | |
| 576 | + | |
| 577 | + #endregion | |
| 578 | + | |
| 579 | + /// <summary> | |
| 580 | + /// Constant used to specify that "no spacing" should be used for data conversion. | |
| 581 | + /// </summary> | |
| 582 | + public const char NoSpacing = char.MinValue; | |
| 583 | + | |
| 584 | + #endregion | |
| 585 | + | |
| 586 | + #region [ Methods ] | |
| 587 | + | |
| 588 | + /// <summary>Encodes given buffer into a user presentable representation.</summary> | |
| 589 | + /// <param name="bytes">Bytes to encode.</param> | |
| 590 | + /// <returns>String representation of byte array.</returns> | |
| 591 | + public virtual string GetString(byte[] bytes) | |
| 592 | + { | |
| 593 | + return GetString(bytes, NoSpacing); | |
| 594 | + } | |
| 595 | + | |
| 596 | + /// <summary>Encodes given buffer into a user presentable representation.</summary> | |
| 597 | + /// <param name="bytes">Bytes to encode.</param> | |
| 598 | + /// <param name="spacingCharacter">Spacing character to place between encoded bytes.</param> | |
| 599 | + /// <returns>String of encoded bytes.</returns> | |
| 600 | + public virtual string GetString(byte[] bytes, char spacingCharacter) | |
| 601 | + { | |
| 602 | + if ((object)bytes == null) | |
| 603 | + throw new ArgumentNullException("bytes", "Input buffer cannot be null"); | |
| 604 | + | |
| 605 | + return GetString(bytes, 0, bytes.Length, spacingCharacter); | |
| 606 | + } | |
| 607 | + | |
| 608 | + /// <summary>Encodes given buffer into a user presentable representation.</summary> | |
| 609 | + /// <param name="bytes">Bytes to encode.</param> | |
| 610 | + /// <param name="offset">Offset into buffer to begin encoding.</param> | |
| 611 | + /// <param name="length">Length of buffer to encode.</param> | |
| 612 | + /// <returns>String of encoded bytes.</returns> | |
| 613 | + public virtual string GetString(byte[] bytes, int offset, int length) | |
| 614 | + { | |
| 615 | + if ((object)bytes == null) | |
| 616 | + throw new ArgumentNullException("bytes", "Input buffer cannot be null"); | |
| 617 | + | |
| 618 | + return GetString(bytes, offset, length, NoSpacing); | |
| 619 | + } | |
| 620 | + | |
| 621 | + /// <summary>Encodes given buffer into a user presentable representation.</summary> | |
| 622 | + /// <param name="bytes">Bytes to encode.</param> | |
| 623 | + /// <param name="offset">Offset into buffer to begin encoding.</param> | |
| 624 | + /// <param name="length">Length of buffer to encode.</param> | |
| 625 | + /// <param name="spacingCharacter">Spacing character to place between encoded bytes.</param> | |
| 626 | + /// <returns>String of encoded bytes.</returns> | |
| 627 | + public abstract string GetString(byte[] bytes, int offset, int length, char spacingCharacter); | |
| 628 | + | |
| 629 | + /// <summary>Decodes given string back into a byte buffer.</summary> | |
| 630 | + /// <param name="value">Encoded string to decode.</param> | |
| 631 | + /// <returns>Decoded bytes.</returns> | |
| 632 | + public virtual byte[] GetBytes(string value) | |
| 633 | + { | |
| 634 | + if (string.IsNullOrEmpty(value)) | |
| 635 | + throw new ArgumentNullException("value", "Input string cannot be null"); | |
| 636 | + return GetBytes(value, NoSpacing); | |
| 637 | + } | |
| 638 | + | |
| 639 | + /// <summary>Decodes given string back into a byte buffer.</summary> | |
| 640 | + /// <param name="value">Encoded string to decode.</param> | |
| 641 | + /// <param name="spacingCharacter">Original spacing character that was inserted between encoded bytes.</param> | |
| 642 | + /// <returns>Decoded bytes</returns> | |
| 643 | + public abstract byte[] GetBytes(string value, char spacingCharacter); | |
| 644 | + | |
| 645 | + #endregion | |
| 646 | + | |
| 647 | + #region [ Static ] | |
| 648 | + | |
| 649 | + // Static Fields | |
| 650 | + private static ByteEncoding s_hexadecimalEncoding; | |
| 651 | + private static ByteEncoding s_decimalEncoding; | |
| 652 | + private static ByteEncoding s_bigEndianBinaryEncoding; | |
| 653 | + private static ByteEncoding s_littleEndianBinaryEncoding; | |
| 654 | + private static ByteEncoding s_base64Encoding; | |
| 655 | + private static ByteEncoding s_asciiEncoding; | |
| 656 | + | |
| 657 | + /// <summary>Handles encoding and decoding of a byte buffer into a hexadecimal-based presentation format.</summary> | |
| 658 | + public static ByteEncoding Hexadecimal | |
| 659 | + { | |
| 660 | + get | |
| 661 | + { | |
| 662 | + if ((object)s_hexadecimalEncoding == null) | |
| 663 | + s_hexadecimalEncoding = new HexadecimalEncoding(); | |
| 664 | + | |
| 665 | + return s_hexadecimalEncoding; | |
| 666 | + } | |
| 667 | + } | |
| 668 | + | |
| 669 | + /// <summary>Handles encoding and decoding of a byte buffer into an integer-based presentation format.</summary> | |
| 670 | + public static ByteEncoding Decimal | |
| 671 | + { | |
| 672 | + get | |
| 673 | + { | |
| 674 | + if ((object)s_decimalEncoding == null) | |
| 675 | + s_decimalEncoding = new DecimalEncoding(); | |
| 676 | + | |
| 677 | + return s_decimalEncoding; | |
| 678 | + } | |
| 679 | + } | |
| 680 | + | |
| 681 | + /// <summary>Handles encoding and decoding of a byte buffer into a big-endian binary (i.e., 0 and 1's) based | |
| 682 | + /// presentation format.</summary> | |
| 683 | + /// <remarks> | |
| 684 | + /// Although endianness is typically used in the context of byte order (see <see cref="GSF.EndianOrder"/> to handle byte | |
| 685 | + /// order swapping), this property allows you visualize "bits" in big-endian order, right-to-left. Note that bits are | |
| 686 | + /// normally stored in the same order as their bytes.). | |
| 687 | + /// </remarks> | |
| 688 | + public static ByteEncoding BigEndianBinary | |
| 689 | + { | |
| 690 | + get | |
| 691 | + { | |
| 692 | + if ((object)s_bigEndianBinaryEncoding == null) | |
| 693 | + s_bigEndianBinaryEncoding = new BinaryEncoding(Endianness.BigEndian); | |
| 694 | + | |
| 695 | + return s_bigEndianBinaryEncoding; | |
| 696 | + } | |
| 697 | + } | |
| 698 | + | |
| 699 | + /// <summary>Handles encoding and decoding of a byte buffer into a little-endian binary (i.e., 0 and 1's) based | |
| 700 | + /// presentation format.</summary> | |
| 701 | + /// <remarks> | |
| 702 | + /// Although endianness is typically used in the context of byte order (see <see cref="GSF.EndianOrder"/> to handle byte | |
| 703 | + /// order swapping), this property allows you visualize "bits" in little-endian order, left-to-right. Note that bits are | |
| 704 | + /// normally stored in the same order as their bytes. | |
| 705 | + /// </remarks> | |
| 706 | + public static ByteEncoding LittleEndianBinary | |
| 707 | + { | |
| 708 | + get | |
| 709 | + { | |
| 710 | + if ((object)s_littleEndianBinaryEncoding == null) | |
| 711 | + s_littleEndianBinaryEncoding = new BinaryEncoding(Endianness.LittleEndian); | |
| 712 | + | |
| 713 | + return s_littleEndianBinaryEncoding; | |
| 714 | + } | |
| 715 | + } | |
| 716 | + | |
| 717 | + /// <summary>Handles encoding and decoding of a byte buffer into a base64 presentation format.</summary> | |
| 718 | + public static ByteEncoding Base64 | |
| 719 | + { | |
| 720 | + get | |
| 721 | + { | |
| 722 | + if ((object)s_base64Encoding == null) | |
| 723 | + s_base64Encoding = new Base64Encoding(); | |
| 724 | + | |
| 725 | + return s_base64Encoding; | |
| 726 | + } | |
| 727 | + } | |
| 728 | + | |
| 729 | + /// <summary>Handles encoding and decoding of a byte buffer into an ASCII character presentation format.</summary> | |
| 730 | + public static ByteEncoding ASCII | |
| 731 | + { | |
| 732 | + get | |
| 733 | + { | |
| 734 | + if ((object)s_asciiEncoding == null) | |
| 735 | + s_asciiEncoding = new ASCIIEncoding(); | |
| 736 | + | |
| 737 | + return s_asciiEncoding; | |
| 738 | + } | |
| 739 | + } | |
| 740 | + | |
| 741 | + /// <summary>Handles byte to string conversions for implementations that are available from Byte.ToString.</summary> | |
| 742 | + /// <param name="bytes">Encoded string to decode.</param> | |
| 743 | + /// <param name="offset">Offset into byte array to begin decoding straing at.</param> | |
| 744 | + /// <param name="length">Number of bytes to decode starting at <paramref name="offset"/></param> | |
| 745 | + /// <param name="spacingCharacter">Character to insert between each byte</param> | |
| 746 | + /// <param name="format">String decoding format.</param> | |
| 747 | + /// <returns>Decoded string</returns> | |
| 748 | + internal static string BytesToString(byte[] bytes, int offset, int length, char spacingCharacter, string format) | |
| 749 | + { | |
| 750 | + if ((object)bytes == null) | |
| 751 | + throw new ArgumentNullException("bytes", "Input buffer cannot be null"); | |
| 752 | + | |
| 753 | + StringBuilder byteString = new StringBuilder(); | |
| 754 | + | |
| 755 | + for (int x = 0; x <= length - 1; x++) | |
| 756 | + { | |
| 757 | + if (spacingCharacter != NoSpacing && x > 0) | |
| 758 | + byteString.Append(spacingCharacter); | |
| 759 | + byteString.Append(bytes[x + offset].ToString(format)); | |
| 760 | + } | |
| 761 | + | |
| 762 | + return byteString.ToString(); | |
| 763 | + } | |
| 764 | + | |
| 765 | + #endregion | |
| 766 | + } | |
| 767 | +} | |