TryDetectEncoding()

static bool System.Net.Http.HttpContent.TryDetectEncoding ( ArraySegment< byte > buffer, [NotNullWhen(true)] out Encoding encoding, out int preambleLength )

inlinestaticprivateinherited

Definition at line 807 of file HttpContent.cs.

    {
        byte[] array = buffer.Array;
        int offset = buffer.Offset;
        int count = buffer.Count;
        if (count >= 2)
        {
            switch ((array[offset] << 8) | array[offset + 1])
            {
            case 61371:
                if (count >= 3 && array[offset + 2] == 191)
                {
                    encoding = Encoding.UTF8;
                    preambleLength = 3;
                    return true;
                }
                break;
            case 65534:
                if (count >= 4 && array[offset + 2] == 0 && array[offset + 3] == 0)
                {
                    encoding = Encoding.UTF32;
                    preambleLength = 4;
                }
                else
                {
                    encoding = Encoding.Unicode;
                    preambleLength = 2;
                }
                return true;
            case 65279:
                encoding = Encoding.BigEndianUnicode;
                preambleLength = 2;
                return true;
            }
        }
        encoding = null;
        preambleLength = 0;
        return false;
    }

References System.array, System.Text.Encoding.BigEndianUnicode, System.buffer, System.count, System.offset, System.Text.Encoding.Unicode, System.Text.Encoding.UTF32, and System.Text.Encoding.UTF8.

Referenced by System.Net.Http.HttpContent.ReadBufferAsString().