private boolean initFeatureMap()

in src/main/java/org/apache/commons/net/ftp/FTPClient.java [1921:1952]

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

    private boolean initFeatureMap() throws IOException {
        if (featuresMap == null) {
            // Don't create map here, because next line may throw exception
            final int replyCode = feat();
            if (replyCode == FTPReply.NOT_LOGGED_IN) { // 503
                return false; // NET-518; don't create empty map
            }
            final boolean success = FTPReply.isPositiveCompletion(replyCode);
            // init the map here, so we don't keep trying if we know the command will fail
            featuresMap = new HashMap<>();
            if (!success) {
                return false;
            }
            for (final String line : _replyLines) {
                if (line.startsWith(" ")) { // it's a FEAT entry
                    String key;
                    String value = "";
                    final int varsep = line.indexOf(' ', 1);
                    if (varsep > 0) {
                        key = line.substring(1, varsep);
                        value = line.substring(varsep + 1);
                    } else {
                        key = line.substring(1);
                    }
                    key = key.toUpperCase(Locale.ENGLISH);
                    final Set<String> entries = featuresMap.computeIfAbsent(key, k -> new HashSet<>());
                    entries.add(value);
                }
            }
        }
        return true;
    }