77 lines
2.2 KiB
C#
77 lines
2.2 KiB
C#
using System;
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using System.Text;
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namespace SharpCompress.Common
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{
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public class ArchiveEncoding
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{
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/// <summary>
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/// Default encoding to use when archive format doesn't specify one.
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/// </summary>
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public Encoding Default { get; set; }
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/// <summary>
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/// ArchiveEncoding used by encryption schemes which don't comply with RFC 2898.
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/// </summary>
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public Encoding Password { get; set; }
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/// <summary>
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/// Set this encoding when you want to force it for all encoding operations.
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/// </summary>
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public Encoding Forced { get; set; }
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/// <summary>
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/// Set this when you want to use a custom method for all decoding operations.
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/// </summary>
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/// <returns>string Func(bytes, index, length)</returns>
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public Func<byte[], int, int, string> CustomDecoder { get; set; }
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public ArchiveEncoding()
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{
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#if NETSTANDARD1_0
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Default = Encoding.GetEncoding("cp437");
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Password = Encoding.GetEncoding("cp437");
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#else
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Default = Encoding.GetEncoding(437);
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Password = Encoding.GetEncoding(437);
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#endif
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}
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#if NETSTANDARD1_3 || NETSTANDARD2_0
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static ArchiveEncoding()
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{
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Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
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}
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#endif
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public string Decode(byte[] bytes)
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{
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return Decode(bytes, 0, bytes.Length);
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}
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public string Decode(byte[] bytes, int start, int length)
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{
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return GetDecoder().Invoke(bytes, start, length);
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}
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public string DecodeUTF8(byte[] bytes)
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{
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return Encoding.UTF8.GetString(bytes, 0, bytes.Length);
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}
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public byte[] Encode(string str)
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{
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return GetEncoding().GetBytes(str);
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}
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public Encoding GetEncoding()
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{
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return Forced ?? Default ?? Encoding.UTF8;
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}
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public Func<byte[], int, int, string> GetDecoder()
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{
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return CustomDecoder ?? ((bytes, index, count) => GetEncoding().GetString(bytes, index, count));
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}
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}
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} |