1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.os;
18 
19 /**
20  * Helper class for reading pooling strings from a Parcel.  It must be used
21  * in conjunction with {@link android.os.PooledStringWriter}.  This really needs
22  * to be pushed in to Parcel itself, but doing that is...  complicated.
23  * @hide
24  */
25 public class PooledStringReader {
26     private final Parcel mIn;
27 
28     /**
29      * The pool of strings we have collected so far.
30      */
31     private final String[] mPool;
32 
PooledStringReader(Parcel in)33     public PooledStringReader(Parcel in) {
34         mIn = in;
35         final int size = in.readInt();
36         mPool = new String[size];
37     }
38 
getStringCount()39     public int getStringCount() {
40         return mPool.length;
41     }
42 
readString()43     public String readString() {
44         int idx = mIn.readInt();
45         if (idx >= 0) {
46             return mPool[idx];
47         } else {
48             idx = (-idx) - 1;
49             String str = mIn.readString();
50             mPool[idx] = str;
51             return str;
52         }
53     }
54 }
55