api to access Loader

common/api/src/main/java/com/dfsek/terra/api/config/ConfigPack.java

@@ -21,6 +21,8 @@ public interface ConfigPack extends LoaderRegistrar, LoaderHolder, RegistryHolde
 
     void registerConfigType(ConfigType<?, ?> type, String id, int priority);
 
+    Loader getLoader();
+
     Set<TerraAddon> addons();
 
     String getID();

common/api/src/main/java/com/dfsek/terra/api/config/Loader.java

@@ -0,0 +1,45 @@
+package com.dfsek.terra.api.config;
+
+import com.dfsek.tectonic.config.Configuration;
+import com.dfsek.tectonic.exception.ConfigException;
+import com.dfsek.terra.api.util.ExceptionalConsumer;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+public interface Loader {
+    /**
+     * Do something with the InputStreams.
+     *
+     * @param consumer Something to do with the streams.
+     */
+    Loader then(ExceptionalConsumer<List<Configuration>> consumer) throws ConfigException;
+
+    Loader thenNames(ExceptionalConsumer<List<String>> consumer) throws ConfigException;
+
+    Loader thenEntries(ExceptionalConsumer<Set<Map.Entry<String, InputStream>>> consumer) throws ConfigException;
+
+    /**
+     * Get a single file from this Loader.
+     *
+     * @param singleFile File to get
+     * @return InputStream from file.
+     */
+    InputStream get(String singleFile) throws IOException;
+
+    /**
+     * Open a subdirectory.
+     *
+     * @param directory Directory to open
+     * @param extension
+     */
+    Loader open(String directory, String extension);
+
+    /**
+     * Close all InputStreams opened.
+     */
+    Loader close();
+}

common/api/src/main/java/com/dfsek/terra/api/util/ExceptionalConsumer.java

@@ -0,0 +1,8 @@
+package com.dfsek.terra.api.util;
+
+import com.dfsek.tectonic.exception.ConfigException;
+
+@FunctionalInterface
+public interface ExceptionalConsumer<T> {
+    void accept(T t) throws ConfigException;
+}