private IfList parseIfList()

in openmeetings-service/src/main/java/org/apache/jackrabbit/webdav/header/IfHeader.java [356:430]
54 lines of code
15 McCabe index (conditional complexity)

    private IfList parseIfList(StringReader reader) throws IOException {
        IfList res = new IfList();
        boolean positive = true;
        String word;

        ReadLoop:
        while (true) {
            int nextChar = readWhiteSpace(reader);
            switch (nextChar) {
                case 'N':
                case 'n':
                    // read not

                    // check whether o or O
                    int not = reader.read();
                    if (not != 'o' && not != 'O') {
                        logIllegalState("IfList-Not", not, "o", null);
                        break;
                    }

                    // check whether t or T
                    not = reader.read();
                    if (not !='t' && not != 'T') {
                        logIllegalState("IfList-Not", not, "t", null);
                        break;
                    }

                    // read Not ok
                    positive = false;
                    break;

                case '<':
                    // state token
                    word = readWord(reader, '>');
                    if (word != null) {
                        res.add(new IfListEntryToken(word, positive));
                        // also add the token to the list of all tokens
                        if (positive) {
                            allTokens.add(word);
                        } else {
                            allNotTokens.add(word);
                        }
                        positive = true;
                    }
                    break;

                case '[':
                    // etag
                    word = readWord(reader, ']');
                    if (word != null) {
                        res.add(new IfListEntryEtag(word, positive));
                        positive = true;
                    }
                    break;

                case ')':
                    // correct end of list, end the loop
                    log.debug("parseIfList: End of If list, terminating loop");
                    break ReadLoop;

                default:
                    logIllegalState("IfList", nextChar, "nN<[)", reader);

                    // abort loop if EOF
                    if (nextChar < 0) {
                        break ReadLoop;
                    }

                    break;
            }
        }

        // return the current list anyway
        return res;
    }