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      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 
     17 #ifndef __APK_BUILDER_H
     18 #define __APK_BUILDER_H
     19 
     20 #include <set>
     21 #include <utils/Errors.h>
     22 #include <utils/String8.h>
     23 #include <utils/StrongPointer.h>
     24 #include <utils/Vector.h>
     25 
     26 #include "ConfigDescription.h"
     27 #include "OutputSet.h"
     28 #include "ResourceFilter.h"
     29 
     30 class ApkSplit;
     31 class AaptFile;
     32 
     33 class ApkBuilder : public android::RefBase {
     34 public:
     35     explicit ApkBuilder(const sp<WeakResourceFilter>& configFilter);
     36 
     37     /**
     38      * Tells the builder to generate a separate APK for resources that
     39      * match the configurations specified. Split APKs can not have
     40      * overlapping resources.
     41      *
     42      * NOTE: All splits should be set up before any files are added.
     43      */
     44     android::status_t createSplitForConfigs(const std::set<ConfigDescription>& configs);
     45 
     46     /**
     47      * Adds a file to be written to the final APK. It's name must not collide
     48      * with that of any files previously added. When a Split APK is being
     49      * generated, duplicates can exist as long as they are in different splits
     50      * (resources.arsc, AndroidManifest.xml).
     51      */
     52     android::status_t addEntry(const String8& path, const android::sp<AaptFile>& file);
     53 
     54     android::Vector<sp<ApkSplit> >& getSplits() {
     55         return mSplits;
     56     }
     57 
     58     android::sp<ApkSplit> getBaseSplit() {
     59         return mSplits[0];
     60     }
     61 
     62     void print() const;
     63 
     64 private:
     65     android::sp<ResourceFilter> mConfigFilter;
     66     android::sp<AndResourceFilter> mDefaultFilter;
     67     android::Vector<sp<ApkSplit> > mSplits;
     68 };
     69 
     70 class ApkSplit : public OutputSet {
     71 public:
     72     android::status_t addEntry(const String8& path, const android::sp<AaptFile>& file);
     73 
     74     const std::set<OutputEntry>& getEntries() const {
     75         return mFiles;
     76     }
     77 
     78     const std::set<ConfigDescription>& getConfigs() const {
     79         return mConfigs;
     80     }
     81 
     82     bool matches(const sp<AaptFile>& file) const {
     83         return mFilter->match(file->getGroupEntry().toParams());
     84     }
     85 
     86     sp<ResourceFilter> getResourceFilter() const {
     87         return mFilter;
     88     }
     89 
     90     const android::String8& getPrintableName() const {
     91         return mName;
     92     }
     93 
     94     const android::String8& getDirectorySafeName() const {
     95         return mDirName;
     96     }
     97 
     98     const android::String8& getPackageSafeName() const {
     99         return mPackageSafeName;
    100     }
    101 
    102     bool isBase() const {
    103         return mIsBase;
    104     }
    105 
    106     void print() const;
    107 
    108 private:
    109     friend class ApkBuilder;
    110 
    111     ApkSplit(const std::set<ConfigDescription>& configs, const android::sp<ResourceFilter>& filter, bool isBase=false);
    112 
    113     std::set<ConfigDescription> mConfigs;
    114     const sp<ResourceFilter> mFilter;
    115     const bool mIsBase;
    116     String8 mName;
    117     String8 mDirName;
    118     String8 mPackageSafeName;
    119     std::set<OutputEntry> mFiles;
    120 };
    121 
    122 #endif // __APK_BUILDER_H
    123