Method convertDateFormat

java/org/apache/catalina/util/Strftime.java:160–207

Search the provided pattern and get the C standard Date/Time formatting rules and convert them to the Java equivalent. @param pattern The pattern to search @return The modified pattern

(String pattern)

     * @return The modified pattern
     */
    protected String convertDateFormat(String pattern) {
        boolean inside = false;
        boolean mark = false;
        boolean modifiedCommand = false;

        StringBuilder buf = new StringBuilder();

        for (int i = 0; i < pattern.length(); i++) {
            char c = pattern.charAt(i);

            if (c == '%' && !mark) {
                mark = true;
            } else {
                if (mark) {
                    if (modifiedCommand) {
                        // don't do anything--we just wanted to skip a char
                        modifiedCommand = false;
                        mark = false;
                    } else {
                        inside = translateCommand(buf, pattern, i, inside);
                        // It's a modifier code
                        if (c == 'O' || c == 'E') {
                            modifiedCommand = true;
                        } else {
                            mark = false;
                        }
                    }
                } else {
                    if (!inside && c != ' ') {
                        // We start a literal, which we need to quote
                        buf.append('\'');
                        inside = true;
                    }

                    buf.append(c);
                }
            }
        }

        if (!buf.isEmpty()) {
            char lastChar = buf.charAt(buf.length() - 1);

            if (lastChar != '\'' && inside) {
                buf.append('\'');
            }
        }
        return buf.toString();
    }

    /**
     * Quotes a string literal for use in a SimpleDateFormat pattern if it is