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      1 // Copyright 2015 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "testing/utils/path_service.h"
      6 
      7 #ifdef _WIN32
      8 #include <Windows.h>
      9 #elif defined(__APPLE__)
     10 #include <mach-o/dyld.h>
     11 #else  // Linux
     12 #include <linux/limits.h>
     13 #include <unistd.h>
     14 #endif  // _WIN32
     15 
     16 #include "core/include/fxcrt/fx_system.h"
     17 
     18 // static
     19 bool PathService::EndsWithSeparator(const std::string& path) {
     20   return path.size() > 1 && path[path.size() - 1] == PATH_SEPARATOR;
     21 }
     22 
     23 // static
     24 bool PathService::GetExecutableDir(std::string* path) {
     25 // Get the current executable file path.
     26 #ifdef _WIN32
     27   char path_buffer[MAX_PATH];
     28   path_buffer[0] = 0;
     29 
     30   if (GetModuleFileNameA(NULL, path_buffer, MAX_PATH) == 0)
     31     return false;
     32   *path = std::string(path_buffer);
     33 #elif defined(__APPLE__)
     34   FXSYS_assert(path);
     35   unsigned int path_length = 0;
     36   _NSGetExecutablePath(NULL, &path_length);
     37   if (path_length == 0)
     38     return false;
     39 
     40   path->reserve(path_length);
     41   path->resize(path_length - 1);
     42   if (_NSGetExecutablePath(&((*path)[0]), &path_length))
     43     return false;
     44 #else   // Linux
     45   static const char kProcSelfExe[] = "/proc/self/exe";
     46   char buf[PATH_MAX];
     47   ssize_t count = ::readlink(kProcSelfExe, buf, PATH_MAX);
     48   if (count <= 0)
     49     return false;
     50 
     51   *path = std::string(buf, count);
     52 #endif  // _WIN32
     53 
     54   // Get the directory path.
     55   std::size_t pos = path->size() - 1;
     56   if (EndsWithSeparator(*path))
     57     pos--;
     58   std::size_t found = path->find_last_of(PATH_SEPARATOR, pos);
     59   if (found == std::string::npos)
     60     return false;
     61   path->resize(found);
     62   return true;
     63 }
     64 
     65 // static
     66 bool PathService::GetSourceDir(std::string* path) {
     67   if (!GetExecutableDir(path))
     68     return false;
     69 
     70   if (!EndsWithSeparator(*path))
     71     path->push_back(PATH_SEPARATOR);
     72   path->append("..");
     73   path->push_back(PATH_SEPARATOR);
     74   path->append("..");
     75   return true;
     76 }
     77 
     78 // static
     79 bool PathService::GetTestDataDir(std::string* path) {
     80   if (!GetSourceDir(path))
     81     return false;
     82 
     83   if (!EndsWithSeparator(*path))
     84     path->push_back(PATH_SEPARATOR);
     85   path->append("testing");
     86   path->push_back(PATH_SEPARATOR);
     87   path->append("resources");
     88   return true;
     89 }
     90 
     91 // static
     92 bool PathService::GetTestFilePath(const std::string& file_name,
     93                                   std::string* path) {
     94   if (!GetTestDataDir(path))
     95     return false;
     96 
     97   if (!EndsWithSeparator(*path))
     98     path->push_back(PATH_SEPARATOR);
     99   path->append(file_name);
    100   return true;
    101 }
    102