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//using System;
using System.Collections.Generic;
using System.Text;
namespace Apewer.Internals
{
internal class Constant
{
#region Byte[]
/// <summary>空字节数组。</summary>
public static readonly byte[] EmptyBytes = new byte[0];
/// <summary>UTF-8 BOM。</summary>
public static byte[] Bom { get => new byte[] { 0xEF, 0xBB, 0xBF }; }
#endregion
#region String
/// <summary>空字符串。</summary>
public const string EmptyString = "";
/// <summary>换行符,由 ASCII 13 和 ASCII 10 组成。</summary>
public const string LineFeed = "\r\n";
/// <summary>空白半角字符。</summary>
public const string BlankDbcCaseChars = " \n\r\t\b\f";
/// <summary>空白全角字符。</summary>
public const string BlankSbcCaseChars = " ";
/// <summary>所有易识别的字符,包含大写字母和数字。</summary>
public const string LucidCollection = "3456789acefhknpstwxyz";
/// <summary>所有 GUID 中的字符,包含字母、数字和连字符。</summary>
public const string GuidCollection = "0123456789ABCDEFabcdef-";
/// <summary>所有主键字符。</summary>
public const string KeyCollection = "0123456789abcdefghijklmnopqrstuvwxyz";
/// <summary>所有十六进制字符。</summary>
public const string HexCollection = "0123456789abcdef";
/// <summary>所有数字(ASCII 48 ~ 57)。</summary>
public const string NumberCollection = "0123456789";
/// <summary>所有数字(ASCII 48 ~ 57)。</summary>
public const string NumericCollection = "0123456789";
/// <summary>所有小写字母(ASCII 97 ~ 122)。</summary>
public const string LowerCollection = "abcdefghijklmnopqrstuvwxyz";
/// <summary>所有大写字母(ASCII 65 ~ 90)。</summary>
public const string UpperCollection = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
/// <summary>所有字母。</summary>
public const string LetterCollection = LowerCollection + UpperCollection;
/// <summary>注入字符默认黑名单。</summary>
public const string InjectDefaultBlackList = "\"'`\b\f\n\r\t\\/:*?<>|@";
/// <summary>注入字符黑名单。</summary>
public const string InjectJsonBlackList = "\\\"'\b\f\n\r\t/@";
#endregion
#region Preset Property
/// <summary>TCP 传输缓冲区大小。</summary>
public const int TcpBufferSize = 8191;
/// <summary>默认的缓冲区容量。</summary>
public const int DefaultBufferCapacity = 1024;
#endregion
}
}