protected StringBuffer renderOptions()

in src/main/java/org/apache/commons/cli/HelpFormatter.java [669:740]
50 lines of code
14 McCabe index (conditional complexity)

    protected StringBuffer renderOptions(final StringBuffer sb, final int width, final Options options, final int leftPad, final int descPad) {
        final String lpad = createPadding(leftPad);
        final String dpad = createPadding(descPad);

        // first create list containing only <lpad>-a,--aaa where
        // -a is opt and --aaa is long opt; in parallel look for
        // the longest opt string this list will be then used to
        // sort options ascending
        int max = 0;
        final List<StringBuffer> prefixList = new ArrayList<>();

        final List<Option> optList = options.helpOptions();

        if (getOptionComparator() != null) {
            Collections.sort(optList, getOptionComparator());
        }

        for (final Option option : optList) {
            final StringBuffer optBuf = new StringBuffer();

            if (option.getOpt() == null) {
                optBuf.append(lpad).append("   ").append(getLongOptPrefix()).append(option.getLongOpt());
            } else {
                optBuf.append(lpad).append(getOptPrefix()).append(option.getOpt());

                if (option.hasLongOpt()) {
                    optBuf.append(',').append(getLongOptPrefix()).append(option.getLongOpt());
                }
            }

            if (option.hasArg()) {
                final String argName = option.getArgName();
                if (argName != null && argName.isEmpty()) {
                    // if the option has a blank argname
                    optBuf.append(' ');
                } else {
                    optBuf.append(option.hasLongOpt() ? longOptSeparator : " ");
                    optBuf.append("<").append(argName != null ? option.getArgName() : getArgName()).append(">");
                }
            }

            prefixList.add(optBuf);
            max = Math.max(optBuf.length(), max);
        }

        int x = 0;

        for (final Iterator<Option> it = optList.iterator(); it.hasNext();) {
            final Option option = it.next();
            final StringBuilder optBuf = new StringBuilder(prefixList.get(x++).toString());

            if (optBuf.length() < max) {
                optBuf.append(createPadding(max - optBuf.length()));
            }

            optBuf.append(dpad);

            final int nextLineTabStop = max + descPad;

            if (option.getDescription() != null) {
                optBuf.append(option.getDescription());
            }

            renderWrappedText(sb, width, nextLineTabStop, optBuf.toString());

            if (it.hasNext()) {
                sb.append(getNewLine());
            }
        }

        return sb;
    }