checkpoint BackupDatAInput / RestoreHelper

1 files changed, 61 insertions, 0 deletions

diff --git a/core/java/android/backup/BackupDataInputStream.java b/core/java/android/backup/BackupDataInputStream.java
new file mode 100644
index 0000000..52b1675
--- /dev/null
+++ b/core/java/android/backup/BackupDataInputStream.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+package android.backup;
+
+import java.io.InputStream;
+import java.io.IOException;
+
+/** @hide */
+public class BackupDataInputStream extends InputStream {
+
+    String key;
+    int dataSize;
+
+    BackupDataInput mData;
+    byte[] mOneByte;
+
+    BackupDataInputStream(BackupDataInput data) {
+        mData = data;
+    }
+
+    public int read() throws IOException {
+        byte[] one = mOneByte;
+        if (mOneByte == null) {
+            one = mOneByte = new byte[1];
+        }
+        mData.readEntityData(one, 0, 1);
+        return one[0];
+    }
+
+    public int read(byte[] b, int offset, int size) throws IOException {
+        return mData.readEntityData(b, offset, size);
+    }
+
+    public int read(byte[] b) throws IOException {
+        return mData.readEntityData(b, 0, b.length);
+    }
+
+    public String getKey() {
+        return this.key;
+    }
+    
+    public int size() {
+        return this.dataSize;
+    }
+}
+
+