1 files changed, 26 insertions, 8 deletions

diff --git a/include/androidfw/AssetManager.h b/include/androidfw/AssetManager.h
index a010957..a13dd16 100644
--- a/include/androidfw/AssetManager.h
+++ b/include/androidfw/AssetManager.h
@@ -69,6 +69,13 @@ struct ResTable_config;
  */
 class AssetManager : public AAssetManager {
 public:
+    static const char* RESOURCES_FILENAME;
+    static const char* IDMAP_BIN;
+    static const char* OVERLAY_DIR;
+    static const char* TARGET_PACKAGE_NAME;
+    static const char* TARGET_APK_PATH;
+    static const char* IDMAP_DIR;
+
     typedef enum CacheMode {
         CACHE_UNKNOWN = 0,
         CACHE_OFF,          // don't try to cache file locations
@@ -93,6 +100,7 @@ public:
      * newly-added asset source.
      */
     bool addAssetPath(const String8& path, int32_t* cookie);
+    bool addOverlayPath(const String8& path, int32_t* cookie);
 
     /*                                                                       
      * Convenience for adding the standard system assets.  Uses the
@@ -218,6 +226,13 @@ public:
      */
     void getLocales(Vector<String8>* locales) const;
 
+    /**
+     * Generate idmap data to translate resources IDs between a package and a
+     * corresponding overlay package.
+     */
+    bool createIdmap(const char* targetApkPath, const char* overlayApkPath,
+        uint32_t targetCrc, uint32_t overlayCrc, uint32_t** outData, size_t* outSize);
+
 private:
     struct asset_path
     {
@@ -264,19 +279,14 @@ private:
     void setLocaleLocked(const char* locale);
     void updateResourceParamsLocked() const;
 
-    bool createIdmapFileLocked(const String8& originalPath, const String8& overlayPath,
-                               const String8& idmapPath);
-
-    bool isIdmapStaleLocked(const String8& originalPath, const String8& overlayPath,
-                            const String8& idmapPath);
-
     Asset* openIdmapLocked(const struct asset_path& ap) const;
 
-    bool getZipEntryCrcLocked(const String8& zipPath, const char* entryFilename, uint32_t* pCrc);
+    void addSystemOverlays(const char* pathOverlaysList, const String8& targetPackagePath,
+            ResTable* sharedRes, size_t offset) const;
 
     class SharedZip : public RefBase {
     public:
-        static sp<SharedZip> get(const String8& path);
+        static sp<SharedZip> get(const String8& path, bool createIfNotPresent = true);
 
         ZipFileRO* getZip();
 
@@ -287,6 +297,9 @@ private:
         ResTable* setResourceTable(ResTable* res);
         
         bool isUpToDate();
+
+        void addOverlay(const asset_path& ap);
+        bool getOverlay(size_t idx, asset_path* out) const;
         
     protected:
         ~SharedZip();
@@ -302,6 +315,8 @@ private:
         Asset* mResourceTableAsset;
         ResTable* mResourceTable;
 
+        Vector<asset_path> mOverlays;
+
         static Mutex gLock;
         static DefaultKeyedVector<String8, wp<SharedZip> > gOpen;
     };
@@ -334,6 +349,9 @@ private:
         static String8 getPathName(const char* path);
 
         bool isUpToDate();
+
+        void addOverlay(const String8& path, const asset_path& overlay);
+        bool getOverlay(const String8& path, size_t idx, asset_path* out) const;
         
     private:
         void closeZip(int idx);