1/*
2 * Copyright (C) 2014 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#ifndef JSON_ASSET_LOADER_H_
17#define JSON_ASSET_LOADER_H_
18
19#include <media/stagefright/foundation/ABase.h>
20#include <utils/KeyedVector.h>
21#include <utils/String8.h>
22#include <utils/StrongPointer.h>
23#include "protos/license_protos.pb.h"
24
25#include "jsmn.h"
26
27namespace android {
28struct ABuffer;
29
30namespace clearkeycas {
31
32class JsonAssetLoader {
33 public:
34    JsonAssetLoader();
35    virtual ~JsonAssetLoader();
36
37    status_t extractAssetFromString(
38            const String8& jsonAssetString, Asset *asset);
39
40 private:
41    Vector<jsmntok_t> mJsmnTokens;
42    Vector<String8> mJsonObjects;
43    Vector<String8> mTokens;
44
45    static sp<ABuffer> decodeBase64String(
46            const String8& encodedText);
47    bool findKey(const String8& jsonObject, Asset *asset);
48    void findValue(
49            const String8 &key, String8* value);
50    bool parseJsonObject(
51            const String8& jsonObject, Vector<String8>* tokens);
52    bool parseJsonAssetString(
53            const String8& jsonString, Vector<String8>* jsonObjects);
54
55    DISALLOW_EVIL_CONSTRUCTORS(JsonAssetLoader);
56};
57
58}  // namespace clearkeycas
59}  // namespace android
60
61#endif  // JSON_ASSET_LOADER_H_
62