/*
 * It will save up to about 8-9%.
 *
 */
    private static String trimSpaces(String content) {
        StringBuffer contentBuffer = new StringBuffer();
        int nextIndex = 0;
        int markIndex = 0;
        int length = content.length();
        char ch = '\0';
        char prevCh = '\0';
        char nextCh = '\0';
        boolean isPrevSpace = false;
        boolean isPrevMark = false;
        for (int i = 0; i < length; i++) {
            ch = content.charAt(i);
            if (ch == '>' || ch == '<'
                    || ch == '{' || ch == '}'
                    || ch == '[' || ch == ']'
                    || ch == '(' || ch == ')'
                    || ch == '=' || ch == ','
                    || ch == '+' || ch == '-'
                    || ch == '*' || ch == '/'
                    || ch == '|' || ch == '&'
                    || ch == '!' || ch == ';') {
                contentBuffer.append(ch);
                isPrevMark = true;
                isPrevSpace = false;
            } else if (ch == ' ' || ch == '\t') {
                isPrevSpace = true;
                prevCh = ch;
            } else {
                if (isPrevSpace && !isPrevMark) {
                    // fix up
                    contentBuffer.append(prevCh);
                }
                isPrevMark = false;
                isPrevSpace = false;
                contentBuffer.append(ch);
            }
        }
        return contentBuffer.toString();
    }