diff --git a/include/utils/AssetManager.h b/include/utils/AssetManager.h
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+++ b/include/utils/AssetManager.h
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+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//
+// Asset management class.  AssetManager objects are thread-safe.
+//
+#ifndef __LIBS_ASSETMANAGER_H
+#define __LIBS_ASSETMANAGER_H
+
+#include <utils/Asset.h>
+#include <utils/AssetDir.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/Vector.h>
+#include <utils/String16.h>
+#include <utils/ZipFileRO.h>
+#include <utils/threads.h>
+
+namespace android {
+
+class Asset;        // fwd decl for things that include Asset.h first
+class ResTable;
+struct ResTable_config;
+
+/*
+ * Every application that uses assets needs one instance of this.  A
+ * single instance may be shared across multiple threads, and a single
+ * thread may have more than one instance (the latter is discouraged).
+ *
+ * The purpose of the AssetManager is to create Asset objects.  To do
+ * this efficiently it may cache information about the locations of
+ * files it has seen.  This can be controlled with the "cacheMode"
+ * argument.
+ *
+ * The asset hierarchy may be examined like a filesystem, using
+ * AssetDir objects to peruse a single directory.
+ */
+class AssetManager {
+public:
+    typedef enum CacheMode {
+        CACHE_UNKNOWN = 0,
+        CACHE_OFF,          // don't try to cache file locations
+        CACHE_DEFER,        // construct cache as pieces are needed
+        //CACHE_SCAN,         // scan full(!) asset hierarchy at init() time
+    } CacheMode;
+
+    AssetManager(CacheMode cacheMode = CACHE_OFF);
+    virtual ~AssetManager(void);
+
+    static int32_t getGlobalCount();
+    
+    /*                                                                       
+     * Add a new source for assets.  This can be called multiple times to
+     * look in multiple places for assets.  It can be either a directory (for
+     * finding assets as raw files on the disk) or a ZIP file.  This newly
+     * added asset path will be examined first when searching for assets,
+     * before any that were previously added.
+     *
+     * Returns "true" on success, "false" on failure.  If 'cookie' is non-NULL,
+     * then on success, *cookie is set to the value corresponding to the
+     * newly-added asset source.
+     */
+    bool addAssetPath(const String8& path, void** cookie);
+
+    /*                                                                       
+     * Convenience for adding the standard system assets.  Uses the
+     * ANDROID_ROOT environment variable to find them.
+     */
+    bool addDefaultAssets();
+
+    /*                                                                       
+     * Iterate over the asset paths in this manager.  (Previously
+     * added via addAssetPath() and addDefaultAssets().)  On first call,
+     * 'cookie' must be NULL, resulting in the first cookie being returned.
+     * Each next cookie will be returned there-after, until NULL indicating
+     * the end has been reached.
+     */
+    void* nextAssetPath(void* cookie) const;
+
+    /*                                                                       
+     * Return an asset path in the manager.  'which' must be between 0 and
+     * countAssetPaths().
+     */
+    String8 getAssetPath(void* cookie) const;
+
+    /*
+     * Set the current locale and vendor.  The locale can change during
+     * the lifetime of an AssetManager if the user updates the device's
+     * language setting.  The vendor is less likely to change.
+     *
+     * Pass in NULL to indicate no preference.
+     */
+    void setLocale(const char* locale);
+    void setVendor(const char* vendor);
+
+    /*
+     * Choose screen orientation for resources values returned.
+     */
+    void setConfiguration(const ResTable_config& config, const char* locale = NULL);
+
+    typedef Asset::AccessMode AccessMode;       // typing shortcut
+
+    /*
+     * Open an asset.
+     *
+     * This will search through locale-specific and vendor-specific
+     * directories and packages to find the file.
+     *
+     * The object returned does not depend on the AssetManager.  It should
+     * be freed by calling Asset::close().
+     */
+    Asset* open(const char* fileName, AccessMode mode);
+
+    /*
+     * Open a non-asset file as an asset.
+     *
+     * This is for opening files that are included in an asset package
+     * but aren't assets.  These sit outside the usual "locale/vendor"
+     * path hierarchy, and will not be seen by "AssetDir" or included
+     * in our filename cache.
+     */
+    Asset* openNonAsset(const char* fileName, AccessMode mode);
+
+    /*
+     * Explicit non-asset file.  The file explicitly named by the cookie (the
+     * resource set to look in) and fileName will be opened and returned.
+     */
+    Asset* openNonAsset(void* cookie, const char* fileName, AccessMode mode);
+
+    /*
+     * Open a directory within the asset hierarchy.
+     *
+     * The contents of the directory are an amalgam of vendor-specific,
+     * locale-specific, and generic assets stored loosely or in asset
+     * packages.  Depending on the cache setting and previous accesses,
+     * this call may incur significant disk overhead.
+     *
+     * To open the top-level directory, pass in "".
+     */
+    AssetDir* openDir(const char* dirName);
+
+    /*
+     * Get the type of a file in the asset hierarchy.  They will either
+     * be "regular" or "directory".  [Currently only works for "regular".]
+     *
+     * Can also be used as a quick test for existence of a file.
+     */
+    FileType getFileType(const char* fileName);
+
+    /*                                                                       
+     * Return the complete resource table to find things in the package.
+     */
+    const ResTable& getResources(bool required = true) const;
+
+    /*
+     * Discard cached filename information.  This only needs to be called
+     * if somebody has updated the set of "loose" files, and we want to
+     * discard our cached notion of what's where.
+     */
+    void purge(void) { purgeFileNameCacheLocked(); }
+
+    /*
+     * Return true if the files this AssetManager references are all
+     * up-to-date (have not been changed since it was created).  If false
+     * is returned, you will need to create a new AssetManager to get
+     * the current data.
+     */
+    bool isUpToDate();
+    
+    /**
+     * Get the known locales for this asset manager object.
+     */
+    void getLocales(Vector<String8>* locales) const;
+
+private:
+    struct asset_path
+    {
+        String8 path;
+        FileType type;
+    };
+
+    Asset* openInPathLocked(const char* fileName, AccessMode mode,
+        const asset_path& path);
+    Asset* openNonAssetInPathLocked(const char* fileName, AccessMode mode,
+        const asset_path& path);
+    Asset* openInLocaleVendorLocked(const char* fileName, AccessMode mode,
+        const asset_path& path, const char* locale, const char* vendor);
+    String8 createPathNameLocked(const asset_path& path, const char* locale,
+        const char* vendor);
+    String8 createPathNameLocked(const asset_path& path, const char* rootDir);
+    String8 createZipSourceNameLocked(const String8& zipFileName,
+        const String8& dirName, const String8& fileName);
+
+    ZipFileRO* getZipFileLocked(const asset_path& path);
+    Asset* openAssetFromFileLocked(const String8& fileName, AccessMode mode);
+    Asset* openAssetFromZipLocked(const ZipFileRO* pZipFile,
+        const ZipEntryRO entry, AccessMode mode, const String8& entryName);
+
+    bool scanAndMergeDirLocked(SortedVector<AssetDir::FileInfo>* pMergedInfo,
+        const asset_path& path, const char* rootDir, const char* dirName);
+    SortedVector<AssetDir::FileInfo>* scanDirLocked(const String8& path);
+    bool scanAndMergeZipLocked(SortedVector<AssetDir::FileInfo>* pMergedInfo,
+        const asset_path& path, const char* rootDir, const char* dirName);
+    void mergeInfoLocked(SortedVector<AssetDir::FileInfo>* pMergedInfo,
+        const SortedVector<AssetDir::FileInfo>* pContents);
+
+    void loadFileNameCacheLocked(void);
+    void fncScanLocked(SortedVector<AssetDir::FileInfo>* pMergedInfo,
+        const char* dirName);
+    bool fncScanAndMergeDirLocked(
+        SortedVector<AssetDir::FileInfo>* pMergedInfo,
+        const asset_path& path, const char* locale, const char* vendor,
+        const char* dirName);
+    void purgeFileNameCacheLocked(void);
+
+    const ResTable* getResTable(bool required = true) const;
+    void setLocaleLocked(const char* locale);
+    void updateResourceParamsLocked() const;
+
+    class SharedZip : public RefBase {
+    public:
+        static sp<SharedZip> get(const String8& path);
+
+        ZipFileRO* getZip();
+
+        Asset* getResourceTableAsset();
+        Asset* setResourceTableAsset(Asset* asset);
+
+        bool isUpToDate();
+        
+    protected:
+        ~SharedZip();
+
+    private:
+        SharedZip(const String8& path, time_t modWhen);
+        SharedZip(); // <-- not implemented
+
+        String8 mPath;
+        ZipFileRO* mZipFile;
+        time_t mModWhen;
+
+        Asset* mResourceTableAsset;
+
+        static Mutex gLock;
+        static DefaultKeyedVector<String8, wp<SharedZip> > gOpen;
+    };
+
+    /*
+     * Manage a set of Zip files.  For each file we need a pointer to the
+     * ZipFile and a time_t with the file's modification date.
+     *
+     * We currently only have two zip files (current app, "common" app).
+     * (This was originally written for 8, based on app/locale/vendor.)
+     */
+    class ZipSet {
+    public:
+        ZipSet(void);
+        ~ZipSet(void);
+
+        /*
+         * Return a ZipFileRO structure for a ZipFileRO with the specified
+         * parameters.
+         */
+        ZipFileRO* getZip(const String8& path);
+
+        Asset* getZipResourceTable(const String8& path);
+        Asset* setZipResourceTable(const String8& path, Asset* asset);
+
+        // generate path, e.g. "common/en-US-noogle.zip"
+        static String8 getPathName(const char* path);
+
+        bool isUpToDate();
+        
+    private:
+        void closeZip(int idx);
+
+        int getIndex(const String8& zip) const;
+        mutable Vector<String8> mZipPath;
+        mutable Vector<sp<SharedZip> > mZipFile;
+    };
+
+    // Protect all internal state.
+    mutable Mutex   mLock;
+
+    ZipSet          mZipSet;
+
+    Vector<asset_path> mAssetPaths;
+    char*           mLocale;
+    char*           mVendor;
+
+    mutable ResTable* mResources;
+    ResTable_config* mConfig;
+
+    /*
+     * Cached data for "loose" files.  This lets us avoid poking at the
+     * filesystem when searching for loose assets.  Each entry is the
+     * "extended partial" path, e.g. "default/default/foo/bar.txt".  The
+     * full set of files is present, including ".EXCLUDE" entries.
+     *
+     * We do not cache directory names.  We don't retain the ".gz",
+     * because to our clients "foo" and "foo.gz" both look like "foo".
+     */
+    CacheMode       mCacheMode;         // is the cache enabled?
+    bool            mCacheValid;        // clear when locale or vendor changes
+    SortedVector<AssetDir::FileInfo> mCache;
+};
+
+}; // namespace android
+
+#endif // __LIBS_ASSETMANAGER_H