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      1 /*
      2  * Copyright (C) 2018 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 "PathUtils.h"
     18 
     19 #include <cutils/log.h>
     20 #include <libgen.h>
     21 #include <unistd.h>
     22 
     23 namespace minikin {
     24 
     25 const char* SELF_EXE_PATH = "/proc/self/exe";
     26 
     27 std::string getDirname(const std::string& path) {
     28     const char* result = dirname(path.c_str());
     29     LOG_ALWAYS_FATAL_IF(result == nullptr, "dirname failed.");
     30     return std::string(result);
     31 }
     32 
     33 std::string getBasename(const std::string& path) {
     34     const char* result = basename(path.c_str());
     35     LOG_ALWAYS_FATAL_IF(result == nullptr, "basename failed.");
     36     return std::string(result);
     37 }
     38 
     39 std::string getTestDataDir() {
     40     char buf[PATH_MAX] = {};
     41     LOG_ALWAYS_FATAL_IF(readlink(SELF_EXE_PATH, buf, PATH_MAX) == -1, "readlink failed.");
     42     return getDirname(buf) + "/data/";
     43 }
     44 
     45 }  // namespace minikin
     46