public static String escape()

in src/main/java/org/apache/maven/shared/utils/StringUtils.java [979:1048]
64 lines of code
15 McCabe index (conditional complexity)

    public static String escape(@Nonnull String str) {
        // improved with code from  cybertiger@cyberiantiger.org
        // unicode from him, and defaul for < 32's.
        int sz = str.length();
        StringBuilder buffer = new StringBuilder(2 * sz);
        for (int i = 0; i < sz; i++) {
            char ch = str.charAt(i);

            // handle unicode
            // CHECKSTYLE_OFF: MagicNumber
            if (ch > 0xfff) {
                buffer.append("\\u").append(Integer.toHexString(ch));
            } else if (ch > 0xff) {
                buffer.append("\\u0").append(Integer.toHexString(ch));
            } else if (ch > 0x7f) {
                buffer.append("\\u00").append(Integer.toHexString(ch));
            }
            // CHECKSTYLE_ON: MagicNumber
            else if (ch < 32) {
                switch (ch) {
                    case '\b':
                        buffer.append('\\');
                        buffer.append('b');
                        break;
                    case '\n':
                        buffer.append('\\');
                        buffer.append('n');
                        break;
                    case '\t':
                        buffer.append('\\');
                        buffer.append('t');
                        break;
                    case '\f':
                        buffer.append('\\');
                        buffer.append('f');
                        break;
                    case '\r':
                        buffer.append('\\');
                        buffer.append('r');
                        break;
                    default:
                        if (ch > 0xf) {
                            buffer.append("\\u00").append(Integer.toHexString(ch));
                        } else {
                            buffer.append("\\u000").append(Integer.toHexString(ch));
                        }
                        break;
                }
            } else {
                switch (ch) {
                    case '\'':
                        buffer.append('\\');
                        buffer.append('\'');
                        break;
                    case '"':
                        buffer.append('\\');
                        buffer.append('"');
                        break;
                    case '\\':
                        buffer.append('\\');
                        buffer.append('\\');
                        break;
                    default:
                        buffer.append(ch);
                        break;
                }
            }
        }
        return buffer.toString();
    }