public static void AppendChar(this IWriter writer, char value)
{
int encodedBytes;
var success = Utf8Encoder.TryEncodeCodePoint(
new UnicodeCodePoint(value),
writer.GetFreeBuffer(MaxUtf8CodePointBytes).ToSpan(),
out encodedBytes);
Debug.Assert(success);
writer.CommitBytes(encodedBytes);
}
public static void AppendString(this IWriter writer, string value)
{
var enumerator = new Utf16LittleEndianCodePointEnumerator(value); // no need to dispose this
while (enumerator.MoveNext())
{
int encodedBytes;
var success = Utf8Encoder.TryEncodeCodePoint(
enumerator.Current,
writer.GetFreeBuffer(MaxUtf8CodePointBytes).ToSpan(),
out encodedBytes);
Debug.Assert(success);
writer.CommitBytes(encodedBytes);
}
}
private static void AppendStringInternal(this IWriter writer, string value, int startIndex, int endIndex)
{
for (var i = startIndex; i <= endIndex;)
{
UnicodeCodePoint codePoint;
int encodedChars;
var success = Utf16LittleEndianEncoder.TryDecodeCodePointFromString(value, i, out codePoint, out encodedChars);
if (!success)
{
throw new ArgumentException();
}
i += encodedChars;
int encodedBytes;
success = Utf8Encoder.TryEncodeCodePoint(
codePoint,
writer.GetFreeBuffer(MaxUtf8CodePointBytes).ToSpan(),
out encodedBytes);
Debug.Assert(success);
writer.CommitBytes(encodedBytes);
}
}