Mark text inside XML

This week I had to implement really simple feature - mark selected words in a XHTML content. Let's say that we need to wrap term 'door' as <strong>door</strong>. The XHTML snippet is

<a href='/door.html'>Our door</a>

String replace will break the structure of the XHTML:

<a href='/<strong>door</strong>.html'>Our <strong>door</strong></a>

Another solution is to use regular expression: ((<.[^>]*>))|(\bdoor\b). This regexp has two parts:

1. ((<.[^>]*>)) - matches any tag


2. (\bdoor\b)- matches word 'door'

Method that wraps word 'door' is

// rawContent contains input string
Pattern pattern = Pattern.compile("(<.[^>]*>)|(\\bdoor\\b)", Pattern.CASE_INSENSITIVE | Pattern.MULTILINE);
Matcher matcher = pattern.matcher(rawContent);
matcher.reset();

int lastMatchEnd = 0;
boolean result = matcher.find();
if (result) {
    StringBuffer sb = new StringBuffer();
    do {
        // Add text before match
        sb.append(rawContent.substring(lastMatchEnd, matcher.start()));
        lastMatchEnd = matcher.end();
        String temp = matcher.group();
        if (!temp.startsWith("<")) {
            sb.append("").append(temp).append("");
        } else {
            sb.append(temp);
        }
        result = matcher.find();
    } while (result);
    sb.append(rawContent.substring(lastMatchEnd));
    return sb.toString();
}
return rawContent;