HtmlEncode() [1/3]

static void System.Net.WebUtility.HtmlEncode ( ReadOnlySpan< char > input, ref ValueStringBuilder output )

inlinestaticprivate

Definition at line 441 of file WebUtility.cs.

    {
        for (int i = 0; i < input.Length; i++)
        {
            char c = input[i];
            if (c <= '>')
            {
                switch (c)
                {
                case '<':
                    output.Append("&lt;");
                    break;
                case '>':
                    output.Append("&gt;");
                    break;
                case '"':
                    output.Append("&quot;");
                    break;
                case '\'':
                    output.Append("&#39;");
                    break;
                case '&':
                    output.Append("&amp;");
                    break;
                default:
                    output.Append(c);
                    break;
                }
                continue;
            }
            int num = -1;
            if (c >= '\u00a0' && c < 'Ā')
            {
                num = c;
            }
            else if (char.IsSurrogate(c))
            {
                int nextUnicodeScalarValueFromUtf16Surrogate = GetNextUnicodeScalarValueFromUtf16Surrogate(input, ref i);
                if (nextUnicodeScalarValueFromUtf16Surrogate >= 65536)
                {
                    num = nextUnicodeScalarValueFromUtf16Surrogate;
                }
                else
                {
                    c = (char)nextUnicodeScalarValueFromUtf16Surrogate;
                }
            }
            if (num >= 0)
            {
                output.Append("&#");
                Span<char> destination = output.AppendSpan(10);
                num.TryFormat(destination, out var charsWritten);
                output.Length -= 10 - charsWritten;
                output.Append(';');
            }
            else
            {
                output.Append(c);
            }
        }
    }

References System.destination, System.Net.WebUtility.GetNextUnicodeScalarValueFromUtf16Surrogate(), and System.input.