public String filter()

in src/main/java/org/apache/sling/servlets/post/impl/helper/NodeNameFilter.java [28:57]

• 23 lines of code
• 7 McCabe index (conditional complexity)

    public String filter(String nodeName) {
        final StringBuilder sb  = new StringBuilder();
        char lastAdded = 0;

        nodeName = nodeName.toLowerCase();
        for(int i=0; i < nodeName.length(); i++) {
            final char c = nodeName.charAt(i);
            char toAdd = c;

            if (ALLOWED_CHARS.indexOf(c) < 0) {
                if (lastAdded == REPLACEMENT_CHAR) {
                    // do not add several _ in a row
                    continue;
                }
                toAdd = REPLACEMENT_CHAR;

            } else if(i == 0 && Character.isDigit(c)) {
                sb.append(REPLACEMENT_CHAR);
            }

            sb.append(toAdd);
            lastAdded = toAdd;
        }

        if (sb.length()==0) {
            sb.append(REPLACEMENT_CHAR);
        }

        return sb.toString();
    }