private static string InternalByteArrayToString(byte[] buffer, int offset, int count)
{
if (count == 0)
{
return(string.Empty);
}
if (count > int.MaxValue / 2)
{
throw new ArgumentOutOfRangeException(nameof(count), FormattableString.Invariant($"The specified length exceeds the maximum value of {int.MaxValue / 2}."));
}
var result = new char[2 * count];
var resultIndex = 0;
var limit = offset + count;
for (; offset < limit; offset++)
{
result[resultIndex++] = CharUtils.HexValueToChar(buffer[offset] >> 4);
result[resultIndex++] = CharUtils.HexValueToChar(buffer[offset] & 0xF);
}
return(new string(result));
}
public static void EscapeString(string s, int startIndex, int limit, StringBuilder sb)
{
for (; startIndex < limit; startIndex++)
{
var c = s[startIndex];
switch (c)
{
case '\0':
sb.Append("\\0");
break;
case '\a':
sb.Append("\\a");
break;
case '\b':
sb.Append("\\b");
break;
case '\t':
sb.Append("\\t");
break;
case '\n':
sb.Append("\\n");
break;
case '\v':
sb.Append("\\v");
break;
case '\f':
sb.Append("\\f");
break;
case '\r':
sb.Append("\\r");
break;
case '"':
sb.Append("\\\"");
break;
case '\\':
sb.Append("\\\\");
break;
default:
if (CharUtils.RequiresEscaping(c))
{
sb.Append("\\u");
sb.Append(CharUtils.HexValueToChar((c >> 12) & 0xF));
sb.Append(CharUtils.HexValueToChar((c >> 8) & 0xF));
sb.Append(CharUtils.HexValueToChar((c >> 4) & 0xF));
sb.Append(CharUtils.HexValueToChar((c >> 0) & 0xF));
continue;
}
sb.Append(c);
break;
}
}
}
