/// <summary>
/// 将字符 转换成 十六进制
/// </summary>
/// <param name="inChar"></param>
/// <param name="needPrefix">是否加\x前缀</param>
/// <returns></returns>
public static string ConvertCharToHex(this char inChar, PrefixForCharToHex prefixForCharToHex = PrefixForCharToHex.None)
{
string hex = Convert.ToByte(inChar).ToString("x2");
switch (prefixForCharToHex)
{
case PrefixForCharToHex.LuceneEscape:
hex = @"symbolx" + hex;
break;
case PrefixForCharToHex.LuceneNormal:
hex = @"symbolx" + hex;
break;
case PrefixForCharToHex.Escape:
hex = @"\x" + hex;
break;
case PrefixForCharToHex.Normal:
hex = @"0x" + hex;
break;
default:
break;
}
return(hex);
}
/// <summary>
/// 将前缀的枚举类型转换成对应的正则表达式部分
/// </summary>
/// <param name="prefixForCharToHex"></param>
/// <returns></returns>
private static string PrefixForCharToHexForRegexPttnpartial(this PrefixForCharToHex prefixForCharToHex)
{
string retString = "";
switch (prefixForCharToHex)
{
case PrefixForCharToHex.LuceneEscape:
retString = @"symbolx";
break;
case PrefixForCharToHex.LuceneNormal:
retString = @"symbolx";
break;
case PrefixForCharToHex.Escape:
retString = @"\\x";
break;
case PrefixForCharToHex.Normal:
retString = @"0x";
break;
default:
break;
}
return(retString);
}
/// <summary>
/// 字符是否符合符号的格式
/// </summary>
/// <param name="inString"></param>
/// <returns></returns>
public static bool IsSymbolMark(this string inString, PrefixForCharToHex prefixForCharToHex = PrefixForCharToHex.LuceneEscape)
{
string retString = inString ?? "";
string prefix = prefixForCharToHex.PrefixForCharToHexForRegexPttnpartial();
string pttnSymbolMark = @"(?i)" + prefix + @"([\da-f]{2,})";
return(System.Text.RegularExpressions.Regex.IsMatch(retString, pttnSymbolMark));
}
/// <summary>
/// 将十六进制的字符串转化成字符
/// </summary>
/// <param name="hexNumber"></param>
/// <param name="prefixForCharToHex"></param>
/// <returns></returns>
public static char ConvertHexToChar(this string hexNumber, PrefixForCharToHex prefixForCharToHex = PrefixForCharToHex.LuceneEscape)
{
var hexString = string.Empty;
var isSymbolMark = hexNumber.IsSymbolMark(out hexString, prefixForCharToHex);
if (isSymbolMark)
{
long result = 0;
long.TryParse(hexString, System.Globalization.NumberStyles.HexNumber, null, out result);
return((char)result);
}
return((char)0);
}
/// <summary>
/// 字符是否符合符号的格式
/// </summary>
/// <param name="inString"></param>
/// <param name="hexNumber"></param>
/// <returns></returns>
public static bool IsSymbolMark(this string inString, out string hexNumber, PrefixForCharToHex prefixForCharToHex = PrefixForCharToHex.LuceneEscape)
{
hexNumber = string.Empty;
string retString = inString ?? "";
string prefix = prefixForCharToHex.PrefixForCharToHexForRegexPttnpartial();
string pttnSymbolMark = @"(?i)" + prefix + @"(?<hex>[\da-f]{2,})";
Match mHex = System.Text.RegularExpressions.Regex.Match(retString, pttnSymbolMark);
if (mHex.Success)
{
hexNumber = mHex.Groups["hex"].Value;
}
return(mHex.Success);
}
