public static void encode()

in impl/src/main/java/org/apache/myfaces/renderkit/html/util/HTMLEncoder.java [416:519]
88 lines of code
35 McCabe index (conditional complexity)

    public static void encode(char[] string, int offset, int length,
                                 boolean encodeNewline,
                                 boolean encodeSubsequentBlanksToNbsp,
                                 boolean encodeNonLatin, Writer writer) throws IOException
    {
        if (string == null || length < 0 || offset >= string.length)
        {
            return;
        }
        offset = Math.max(0, offset);
        int realLength = Math.min(length, string.length - offset);

        String app;
        char c = ' ';
        char prevC;
        int start = offset;
        
        for (int i = offset; i < offset + realLength; ++i)
        {
            app = null;
            prevC = c;
            c = string[i];

            // All characters before letters
            if ((int)c < 0x41)
            {
                switch (c)
                {
                    case '"': app = "&quot;"; break;    //"
                    case '&': app = "&amp;"; break;     //&
                    case '<': app = "&lt;"; break;      //<
                    case '>': app = "&gt;"; break;      //>
                    case ' ':
                        if (encodeSubsequentBlanksToNbsp &&
                                prevC == ' ')
                        {
                            //Space at beginning or after another space
                            app = "&#160;";
                        }
                        break;
                    case '\n':
                        if (encodeNewline)
                        {
                            app = "<br/>";
                        }
                        break;
                    default:
                        break;
                }
                // http://www.w3.org/MarkUp/html3/specialchars.html
                // From C0 extension U+0000-U+001F only U+0009, U+000A and
                // U+000D are valid control characters
                if (c <= 0x1F && c != 0x09 && c != 0x0A && c != 0x0D)
                {
                    // Ignore escape character
                    app = "";
                }
            }
            else if (encodeNonLatin && (int)c > 0x80)
            {
                 switch(c)
                 {
                    //german umlauts
                    case '\u00E4' : app = "&auml;";  break;
                    case '\u00C4' : app = "&Auml;";  break;
                    case '\u00F6' : app = "&ouml;";  break;
                    case '\u00D6' : app = "&Ouml;";  break;
                    case '\u00FC' : app = "&uuml;";  break;
                    case '\u00DC' : app = "&Uuml;";  break;
                    case '\u00DF' : app = "&szlig;"; break;

                    //misc
                    //case 0x80: app = "&euro;"; break;  sometimes euro symbol is ascii 128, should we support it?
                    case '\u20AC': app = "&euro;";  break;
                    case '\u00AB': app = "&laquo;"; break;
                    case '\u00BB': app = "&raquo;"; break;
                    case '\u00A0': app = "&#160;"; break;

                    default :
                        //encode all non basic latin characters
                        app = "&#" + ((int)c) + ';';
                    break;
                }
            }
            if (app != null)
            {
                if (start < i)
                {
                    writer.write(string, start, i-start);
                }
                start = i+1;
                writer.write(app);
            }
        }

        if (start == offset)
        {
            writer.write(string, offset, realLength);
        }
        else if (start < offset+realLength)
        {
            writer.write(string,start,offset+realLength-start);
        }
    }