diff --git a/tools/aapt/ResourceFilter.h b/tools/aapt/ResourceFilter.h
new file mode 100644
index 0000000..647b7bb
--- /dev/null
+++ b/tools/aapt/ResourceFilter.h
@@ -0,0 +1,33 @@
+//
+// Copyright 2011 The Android Open Source Project
+//
+// Build resource files from raw assets.
+//
+
+#ifndef RESOURCE_FILTER_H
+#define RESOURCE_FILTER_H
+
+#include "AaptAssets.h"
+
+/**
+ * Implements logic for parsing and handling "-c" and "--preferred-configurations"
+ * options.
+ */
+class ResourceFilter
+{
+public:
+    ResourceFilter() : mData(), mContainsPseudo(false) {}
+    status_t parse(const char* arg);
+    bool isEmpty() const;
+    bool match(int axis, uint32_t value) const;
+    bool match(int axis, const ResTable_config& config) const;
+    bool match(const ResTable_config& config) const;
+    const SortedVector<uint32_t>* configsForAxis(int axis) const;
+    inline bool containsPseudo() const { return mContainsPseudo; }
+
+private:
+    KeyedVector<int,SortedVector<uint32_t> > mData;
+    bool mContainsPseudo;
+};
+
+#endif