diff options
Diffstat (limited to 'Emby.Common.Implementations/IO/SharpCifs/Util/Base64.cs')
| -rw-r--r-- | Emby.Common.Implementations/IO/SharpCifs/Util/Base64.cs | 176 |
1 files changed, 90 insertions, 86 deletions
diff --git a/Emby.Common.Implementations/IO/SharpCifs/Util/Base64.cs b/Emby.Common.Implementations/IO/SharpCifs/Util/Base64.cs index 4770f1354..8a869ce21 100644 --- a/Emby.Common.Implementations/IO/SharpCifs/Util/Base64.cs +++ b/Emby.Common.Implementations/IO/SharpCifs/Util/Base64.cs @@ -19,92 +19,96 @@ using System.Text; namespace SharpCifs.Util { - public class Base64 - { - private static readonly string Alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + public class Base64 + { + private static readonly string Alphabet + = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; - /// <summary>Base-64 encodes the supplied block of data.</summary> - /// <remarks> - /// Base-64 encodes the supplied block of data. Line wrapping is not - /// applied on output. - /// </remarks> - /// <param name="bytes">The block of data that is to be Base-64 encoded.</param> - /// <returns>A <code>String</code> containing the encoded data.</returns> - public static string Encode(byte[] bytes) - { - int length = bytes.Length; - if (length == 0) - { - return string.Empty; - } - StringBuilder buffer = new StringBuilder((int)Math.Ceiling(length / 3d) * 4); - int remainder = length % 3; - length -= remainder; - int block; - int i = 0; - while (i < length) - { - block = ((bytes[i++] & unchecked(0xff)) << 16) | ((bytes[i++] & unchecked( - 0xff)) << 8) | (bytes[i++] & unchecked(0xff)); - buffer.Append(Alphabet[(int)(((uint)block) >> 18)]); - buffer.Append(Alphabet[((int)(((uint)block) >> 12)) & unchecked(0x3f)]); - buffer.Append(Alphabet[((int)(((uint)block) >> 6)) & unchecked(0x3f)]); - buffer.Append(Alphabet[block & unchecked(0x3f)]); - } - if (remainder == 0) - { - return buffer.ToString(); - } - if (remainder == 1) - { - block = (bytes[i] & unchecked(0xff)) << 4; - buffer.Append(Alphabet[(int)(((uint)block) >> 6)]); - buffer.Append(Alphabet[block & unchecked(0x3f)]); - buffer.Append("=="); - return buffer.ToString(); - } - block = (((bytes[i++] & unchecked(0xff)) << 8) | ((bytes[i]) & unchecked(0xff))) << 2; - buffer.Append(Alphabet[(int)(((uint)block) >> 12)]); - buffer.Append(Alphabet[((int)(((uint)block) >> 6)) & unchecked(0x3f)]); - buffer.Append(Alphabet[block & unchecked(0x3f)]); - buffer.Append("="); - return buffer.ToString(); - } + /// <summary>Base-64 encodes the supplied block of data.</summary> + /// <remarks> + /// Base-64 encodes the supplied block of data. Line wrapping is not + /// applied on output. + /// </remarks> + /// <param name="bytes">The block of data that is to be Base-64 encoded.</param> + /// <returns>A <code>String</code> containing the encoded data.</returns> + public static string Encode(byte[] bytes) + { + int length = bytes.Length; + if (length == 0) + { + return string.Empty; + } + StringBuilder buffer = new StringBuilder((int)Math.Ceiling(length / 3d) * 4); + int remainder = length % 3; + length -= remainder; + int block; + int i = 0; + while (i < length) + { + block = ((bytes[i++] & unchecked(0xff)) << 16) | ((bytes[i++] & unchecked( + 0xff)) << 8) | (bytes[i++] & unchecked(0xff)); + buffer.Append(Alphabet[(int)(((uint)block) >> 18)]); + buffer.Append(Alphabet[((int)(((uint)block) >> 12)) & unchecked(0x3f)]); + buffer.Append(Alphabet[((int)(((uint)block) >> 6)) & unchecked(0x3f)]); + buffer.Append(Alphabet[block & unchecked(0x3f)]); + } + if (remainder == 0) + { + return buffer.ToString(); + } + if (remainder == 1) + { + block = (bytes[i] & unchecked(0xff)) << 4; + buffer.Append(Alphabet[(int)(((uint)block) >> 6)]); + buffer.Append(Alphabet[block & unchecked(0x3f)]); + buffer.Append("=="); + return buffer.ToString(); + } + block = (((bytes[i++] & unchecked(0xff)) << 8) | ((bytes[i]) & unchecked(0xff))) << 2; + buffer.Append(Alphabet[(int)(((uint)block) >> 12)]); + buffer.Append(Alphabet[((int)(((uint)block) >> 6)) & unchecked(0x3f)]); + buffer.Append(Alphabet[block & unchecked(0x3f)]); + buffer.Append("="); + return buffer.ToString(); + } - /// <summary>Decodes the supplied Base-64 encoded string.</summary> - /// <remarks>Decodes the supplied Base-64 encoded string.</remarks> - /// <param name="string">The Base-64 encoded string that is to be decoded.</param> - /// <returns>A <code>byte[]</code> containing the decoded data block.</returns> - public static byte[] Decode(string @string) - { - int length = @string.Length; - if (length == 0) - { - return new byte[0]; - } - int pad = (@string[length - 2] == '=') ? 2 : (@string[length - 1] == '=') ? 1 : 0; - int size = length * 3 / 4 - pad; - byte[] buffer = new byte[size]; - int block; - int i = 0; - int index = 0; - while (i < length) - { - block = (Alphabet.IndexOf(@string[i++]) & unchecked(0xff)) << 18 | (Alphabet - .IndexOf(@string[i++]) & unchecked(0xff)) << 12 | (Alphabet.IndexOf(@string - [i++]) & unchecked(0xff)) << 6 | (Alphabet.IndexOf(@string[i++]) & unchecked( - 0xff)); - buffer[index++] = unchecked((byte)((int)(((uint)block) >> 16))); - if (index < size) - { - buffer[index++] = unchecked((byte)(((int)(((uint)block) >> 8)) & unchecked(0xff))); - } - if (index < size) - { - buffer[index++] = unchecked((byte)(block & unchecked(0xff))); - } - } - return buffer; - } - } + /// <summary>Decodes the supplied Base-64 encoded string.</summary> + /// <remarks>Decodes the supplied Base-64 encoded string.</remarks> + /// <param name="string">The Base-64 encoded string that is to be decoded.</param> + /// <returns>A <code>byte[]</code> containing the decoded data block.</returns> + public static byte[] Decode(string @string) + { + int length = @string.Length; + if (length == 0) + { + return new byte[0]; + } + int pad = (@string[length - 2] == '=') ? 2 : (@string[length - 1] == '=') ? 1 : 0; + int size = length * 3 / 4 - pad; + byte[] buffer = new byte[size]; + int block; + int i = 0; + int index = 0; + while (i < length) + { + block = (Alphabet.IndexOf(@string[i++]) & unchecked(0xff)) << 18 + | (Alphabet.IndexOf(@string[i++]) & unchecked(0xff)) << 12 + | (Alphabet.IndexOf(@string[i++]) & unchecked(0xff)) << 6 + | (Alphabet.IndexOf(@string[i++]) & unchecked(0xff)); + buffer[index++] = unchecked((byte)((int)(((uint)block) >> 16))); + if (index < size) + { + buffer[index++] = unchecked( + (byte)( + ((int)(((uint)block) >> 8)) & unchecked(0xff)) + ); + } + if (index < size) + { + buffer[index++] = unchecked((byte)(block & unchecked(0xff))); + } + } + return buffer; + } + } } |