public String lookup()

in src/main/java/org/apache/commons/text/lookup/ResourceBundleStringLookup.java [85:112]

• 26 lines of code
• 10 McCabe index (conditional complexity)

    public String lookup(final String key) {
        if (key == null) {
            return null;
        }
        final String[] keys = key.split(SPLIT_STR);
        final int keyLen = keys.length;
        final boolean anyBundle = bundleName == null;
        if (anyBundle && keyLen != 2) {
            throw IllegalArgumentExceptions
                .format("Bad resource bundle key format [%s]; expected format is BundleName:KeyName.", key);
        }
        if (bundleName != null && keyLen != 1) {
            throw IllegalArgumentExceptions.format("Bad resource bundle key format [%s]; expected format is KeyName.",
                key);
        }
        final String keyBundleName = anyBundle ? keys[0] : bundleName;
        final String bundleKey = anyBundle ? keys[1] : keys[0];
        try {
            return getString(keyBundleName, bundleKey);
        } catch (final MissingResourceException e) {
            // The key is missing, return null such that an interpolator can supply a default value.
            return null;
        } catch (final Exception e) {
            // Should only be a ClassCastException
            throw IllegalArgumentExceptions.format(e, "Error looking up resource bundle [%s] and key [%s].",
                keyBundleName, bundleKey);
        }
    }