auto import from //depot/cupcake/@135843

1 files changed, 145 insertions, 0 deletions

diff --git a/include/utils/AssetDir.h b/include/utils/AssetDir.h
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+++ b/include/utils/AssetDir.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.
+ */
+
+//
+// Access a chunk of the asset hierarchy as if it were a single directory.
+//
+#ifndef __LIBS_ASSETDIR_H
+#define __LIBS_ASSETDIR_H
+
+#include <utils/String8.h>
+#include <utils/Vector.h>
+#include <utils/SortedVector.h>
+#include <utils/misc.h>
+#include <sys/types.h>
+
+namespace android {
+
+/*
+ * This provides vector-style access to a directory.  We do this rather
+ * than modeling opendir/readdir access because it's simpler and the
+ * nature of the operation requires us to have all data on hand anyway.
+ *
+ * The list of files will be sorted in ascending order by ASCII value.
+ *
+ * The contents are populated by our friend, the AssetManager.
+ */
+class AssetDir {
+public:
+    AssetDir(void)
+        : mFileInfo(NULL)
+        {}
+    virtual ~AssetDir(void) {
+        delete mFileInfo;
+    }
+
+    /*
+     * Vector-style access.
+     */
+    size_t getFileCount(void) { return mFileInfo->size(); }
+    const String8& getFileName(int idx) {
+        return mFileInfo->itemAt(idx).getFileName();
+    }
+    const String8& getSourceName(int idx) {
+        return mFileInfo->itemAt(idx).getSourceName();
+    }
+
+    /*
+     * Get the type of a file (usually regular or directory).
+     */
+    FileType getFileType(int idx) {
+        return mFileInfo->itemAt(idx).getFileType();
+    }
+
+private:
+    /* these operations are not implemented */
+    AssetDir(const AssetDir& src);
+    const AssetDir& operator=(const AssetDir& src);
+
+    friend class AssetManager;
+
+    /*
+     * This holds information about files in the asset hierarchy.
+     */
+    class FileInfo {
+    public:
+        FileInfo(void) {}
+        FileInfo(const String8& path)      // useful for e.g. svect.indexOf
+            : mFileName(path), mFileType(kFileTypeUnknown)
+            {}
+        ~FileInfo(void) {}
+        FileInfo(const FileInfo& src) {
+            copyMembers(src);
+        }
+        const FileInfo& operator= (const FileInfo& src) {
+            if (this != &src)
+                copyMembers(src);
+            return *this;
+        }
+
+        void copyMembers(const FileInfo& src) {
+            mFileName = src.mFileName;
+            mFileType = src.mFileType;
+            mSourceName = src.mSourceName;
+        }
+
+        /* need this for SortedVector; must compare only on file name */
+        bool operator< (const FileInfo& rhs) const {
+            return mFileName < rhs.mFileName;
+        }
+
+        /* used by AssetManager */
+        bool operator== (const FileInfo& rhs) const {
+            return mFileName == rhs.mFileName;
+        }
+
+        void set(const String8& path, FileType type) {
+            mFileName = path;
+            mFileType = type;
+        }
+
+        const String8& getFileName(void) const { return mFileName; }
+        void setFileName(const String8& path) { mFileName = path; }
+
+        FileType getFileType(void) const { return mFileType; }
+        void setFileType(FileType type) { mFileType = type; }
+
+        const String8& getSourceName(void) const { return mSourceName; }
+        void setSourceName(const String8& path) { mSourceName = path; }
+
+        /*
+         * Handy utility for finding an entry in a sorted vector of FileInfo.
+         * Returns the index of the matching entry, or -1 if none found.
+         */
+        static int findEntry(const SortedVector<FileInfo>* pVector,
+            const String8& fileName);
+
+    private:
+        String8    mFileName;      // filename only
+        FileType    mFileType;      // regular, directory, etc
+
+        String8    mSourceName;    // currently debug-only
+    };
+
+    /* AssetManager uses this to initialize us */
+    void setFileList(SortedVector<FileInfo>* list) { mFileInfo = list; }
+
+    SortedVector<FileInfo>* mFileInfo;
+};
+
+}; // namespace android
+
+#endif // __LIBS_ASSETDIR_H