1/*
2 * Copyright (C) 2016 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#ifndef AAPT_SPLIT_TABLESPLITTER_H
18#define AAPT_SPLIT_TABLESPLITTER_H
19
20#include "ConfigDescription.h"
21#include "ResourceTable.h"
22#include "filter/ConfigFilter.h"
23#include "process/IResourceTableConsumer.h"
24
25#include <android-base/macros.h>
26#include <set>
27#include <vector>
28
29namespace aapt {
30
31struct SplitConstraints {
32    std::set<ConfigDescription> configs;
33};
34
35struct TableSplitterOptions {
36    /**
37     * The preferred density to keep in the table, stripping out all others.
38     */
39    Maybe<uint16_t> preferredDensity;
40
41    /**
42     * Configuration filter that determines which resource configuration values end up in
43     * the final table.
44     */
45    IConfigFilter* configFilter = nullptr;
46};
47
48class TableSplitter {
49public:
50    TableSplitter(const std::vector<SplitConstraints>& splits,
51                  const TableSplitterOptions& options) :
52            mSplitConstraints(splits), mPreferredDensity(options.preferredDensity),
53            mConfigFilter(options.configFilter) {
54        for (size_t i = 0; i < mSplitConstraints.size(); i++) {
55            mSplits.push_back(util::make_unique<ResourceTable>());
56        }
57    }
58
59    bool verifySplitConstraints(IAaptContext* context);
60
61    void splitTable(ResourceTable* originalTable);
62
63    const std::vector<std::unique_ptr<ResourceTable>>& getSplits() {
64        return mSplits;
65    }
66
67private:
68    std::vector<SplitConstraints> mSplitConstraints;
69    std::vector<std::unique_ptr<ResourceTable>> mSplits;
70    Maybe<uint16_t> mPreferredDensity;
71    IConfigFilter* mConfigFilter;
72
73    DISALLOW_COPY_AND_ASSIGN(TableSplitter);
74};
75
76}
77
78#endif /* AAPT_SPLIT_TABLESPLITTER_H */
79