private static void append()

in repository/service/src/main/java/org/apache/karaf/cave/repository/service/bundlerepository/BaseClause.java [56:107]
52 lines of code
16 McCabe index (conditional complexity)

    private static void append(StringBuilder sb, String key, Object val, boolean attribute) {
        sb.append(key);
        if (val instanceof Version) {
            sb.append(":Version=").append(val);
        } else if (val instanceof Long) {
            sb.append(":Long=").append(val);
        } else if (val instanceof Double) {
            sb.append(":Double=").append(val);
        } else if (val instanceof Iterable) {
            Iterable it = (Iterable) val;
            String scalar = null;
            for (Object o : it) {
                String ts;
                if (o instanceof String) {
                    ts = "String";
                } else if (o instanceof Long) {
                    ts = "Long";
                } else if (o instanceof Double) {
                    ts = "Double";
                } else if (o instanceof Version) {
                    ts = "Version";
                } else {
                    throw new IllegalArgumentException("Unsupported scalar type: " + o);
                }
                if (scalar == null) {
                    scalar = ts;
                } else if (!scalar.equals(ts)) {
                    throw new IllegalArgumentException("Inconsistent list type for attribute " + key);
                }
            }
            sb.append(":List<").append(scalar).append(">=");
            sb.append("\"");
            boolean first = true;
            for (Object o : it) {
                if (first) {
                    first = false;
                } else {
                    sb.append(",");
                }
                sb.append(o.toString().replace("\"", "\\\"").replace(",", "\\,"));
            }
            sb.append("\"");
        } else {
            sb.append(attribute ? "=" : ":=");
            String s = val.toString();
            if (s.matches("[0-9a-zA-Z_\\-.]*")) {
                sb.append(s);
            } else {
                sb.append("\"").append(s.replace("\"", "\\\\")).append("\"");
            }
        }
    }