internal static Utf16FormatSegment[] Utf16Parse(string format)
{
if (format == null)
{
throw new ArgumentNullException(nameof(format));
}
var list = new List <Utf16FormatSegment>();
int i = 0;
int len = format.Length;
var copyFrom = 0;
while (true)
{
while (i < len)
{
var parserScanResult = FormatParser.ScanFormatString(format, ref i);
if (ParserScanResult.NormalChar == parserScanResult && i < len)
{
// skip normal char
continue;
}
var size = i - copyFrom;
if (ParserScanResult.EscapedChar == parserScanResult)
{
size--;
}
if (size != 0)
{
list.Add(new Utf16FormatSegment(copyFrom, size, Utf16FormatSegment.NotFormatIndex, 0));
}
copyFrom = i;
if (ParserScanResult.BraceOpen == parserScanResult)
{
break;
}
}
if (i >= len)
{
break;
}
// Here it is before `{`.
var indexParse = FormatParser.Parse(format, i);
copyFrom = indexParse.LastIndex; // continue after '}'
i = indexParse.LastIndex;
list.Add(new Utf16FormatSegment(indexParse.LastIndex - indexParse.FormatString.Length - 1, indexParse.FormatString.Length, indexParse.Index, indexParse.Alignment));
}
return(list.ToArray());
}
internal static Utf8FormatSegment[] Utf8Parse(string format, out byte[] utf8buffer)
{
if (format == null)
{
throw new ArgumentNullException(nameof(format));
}
var list = new List <Utf8FormatSegment>();
utf8buffer = new byte[Encoding.UTF8.GetMaxByteCount(format.Length)];
var bufOffset = 0;
int i = 0;
int len = format.Length;
var copyFrom = 0;
var formatSpan = format.AsSpan();
while (true)
{
while (i < len)
{
var parserScanResult = FormatParser.ScanFormatString(formatSpan, ref i);
if (ParserScanResult.NormalChar == parserScanResult && i < len)
{
// skip normal char
continue;
}
var size = i - copyFrom;
if (ParserScanResult.EscapedChar == parserScanResult)
{
size--;
}
if (size != 0)
{
var utf8size = Encoding.UTF8.GetBytes(format, copyFrom, size, utf8buffer, bufOffset);
list.Add(new Utf8FormatSegment(bufOffset, utf8size, Utf8FormatSegment.NotFormatIndex, default, 0));
