1 /*
2  * Copyright (C) 2017 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 #include "AbiFilter.h"
18 
19 #include <memory>
20 
21 #include "io/Util.h"
22 
23 namespace aapt {
24 
FromAbiList(const std::vector<configuration::Abi> & abi_list)25 std::unique_ptr<AbiFilter> AbiFilter::FromAbiList(const std::vector<configuration::Abi>& abi_list) {
26   std::unordered_set<std::string> abi_set;
27   for (auto& abi : abi_list) {
28     abi_set.insert(configuration::AbiToString(abi).to_string());
29   }
30   // Make unique by hand as the constructor is private.
31   return std::unique_ptr<AbiFilter>(new AbiFilter(abi_set));
32 }
33 
Keep(const std::string & path)34 bool AbiFilter::Keep(const std::string& path) {
35   // We only care about libraries.
36   if (!util::StartsWith(path, kLibPrefix)) {
37     return true;
38   }
39 
40   auto abi_end = path.find('/', kLibPrefixLen);
41   if (abi_end == std::string::npos) {
42     // Ignore any files in the top level lib directory.
43     return true;
44   }
45 
46   // Strip the lib/ prefix.
47   const std::string& path_abi = path.substr(kLibPrefixLen, abi_end - kLibPrefixLen);
48   return (abis_.find(path_abi) != abis_.end());
49 }
50 
51 }  // namespace aapt
52