public static String swapCase()

in src/main/java/org/apache/maven/shared/utils/StringUtils.java [1353:1383]

29 lines of code
7 McCabe index (conditional complexity)


    public static String swapCase(String str) {
        if (str == null) {
            return null;
        }
        int sz = str.length();
        StringBuilder buffer = new StringBuilder(sz);

        boolean whitespace = false;
        char ch;
        char tmp;

        for (int i = 0; i < sz; i++) {
            ch = str.charAt(i);
            if (Character.isUpperCase(ch)) {
                tmp = Character.toLowerCase(ch);
            } else if (Character.isTitleCase(ch)) {
                tmp = Character.toLowerCase(ch);
            } else if (Character.isLowerCase(ch)) {
                if (whitespace) {
                    tmp = Character.toTitleCase(ch);
                } else {
                    tmp = Character.toUpperCase(ch);
                }
            } else {
                tmp = ch;
            }
            buffer.append(tmp);
            whitespace = Character.isWhitespace(ch);
        }
        return buffer.toString();
    }