Compile Fix

src/main/java/fr/atlasworld/network/core/server/sources/LocalServerFileSource.java

@@ -17,7 +17,7 @@ public class LocalServerFileSource implements ServerFileSource {
 
     @Override
     public void loadSource(String source, String dest, ServerFilesHolder holder) throws IOException {
-        if (source.isEmpty())
+        if (source == null || source.isEmpty())
             throw new InvalidConfigurationException("Source cannot be an empty string!");
 
         if (source.endsWith("/*")) {

src/main/java/fr/atlasworld/network/core/server/sources/StringServerFileSource.java

@@ -0,0 +1,20 @@
+package fr.atlasworld.network.core.server.sources;
+
+import fr.atlasworld.network.api.file.configuration.exception.InvalidConfigurationException;
+import fr.atlasworld.network.api.server.files.ServerFileSource;
+import fr.atlasworld.network.api.server.files.ServerFilesHolder;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+
+public class StringServerFileSource implements ServerFileSource {
+    @Override
+    public void loadSource(String source, String dest, ServerFilesHolder holder) throws IOException {
+        if (source == null)
+            throw new InvalidConfigurationException("Source must be specified!");
+
+        try (ByteArrayInputStream stream = new ByteArrayInputStream(source.getBytes())) {
+            holder.add(dest, stream);
+        }
+    }
+}