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      1 // Copyright (c) 2006-2008 The Chromium 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 "base/base_paths_mac.h"
      6 
      7 #import <Foundation/Foundation.h>
      8 #include <mach-o/dyld.h>
      9 
     10 #include "base/compiler_specific.h"
     11 #include "base/file_path.h"
     12 #include "base/file_util.h"
     13 #include "base/logging.h"
     14 #include "base/mac/mac_util.h"
     15 #include "base/path_service.h"
     16 #include "base/string_util.h"
     17 
     18 namespace {
     19 
     20 bool GetNSExecutablePath(FilePath* path) WARN_UNUSED_RESULT;
     21 
     22 bool GetNSExecutablePath(FilePath* path) {
     23   DCHECK(path);
     24   // Executable path can have relative references ("..") depending on
     25   // how the app was launched.
     26   uint32_t executable_length = 0;
     27   _NSGetExecutablePath(NULL, &executable_length);
     28   DCHECK_GE(executable_length, 1u);
     29   std::string executable_path;
     30   char* executable_path_c = WriteInto(&executable_path, executable_length);
     31   int rv = _NSGetExecutablePath(executable_path_c, &executable_length);
     32   DCHECK_EQ(rv, 0);
     33   DCHECK(!executable_path.empty());
     34   if ((rv != 0) || (executable_path.empty()))
     35     return false;
     36   *path = FilePath(executable_path);
     37   return true;
     38 }
     39 
     40 }  // namespace
     41 
     42 namespace base {
     43 
     44 bool PathProviderMac(int key, FilePath* result) {
     45   switch (key) {
     46     case base::FILE_EXE:
     47     case base::FILE_MODULE: {
     48       return GetNSExecutablePath(result);
     49     }
     50     case base::DIR_CACHE:
     51       return base::mac::GetUserDirectory(NSCachesDirectory, result);
     52     case base::DIR_APP_DATA:
     53       return base::mac::GetUserDirectory(NSApplicationSupportDirectory, result);
     54     case base::DIR_SOURCE_ROOT: {
     55       // Go through PathService to catch overrides.
     56       if (!PathService::Get(base::FILE_EXE, result))
     57         return false;
     58 
     59       // Start with the executable's directory.
     60       *result = result->DirName();
     61       if (base::mac::AmIBundled()) {
     62         // The bundled app executables (Chromium, TestShell, etc) live five
     63         // levels down, eg:
     64         // src/xcodebuild/{Debug|Release}/Chromium.app/Contents/MacOS/Chromium
     65         *result = result->DirName().DirName().DirName().DirName().DirName();
     66       } else {
     67         // Unit tests execute two levels deep from the source root, eg:
     68         // src/xcodebuild/{Debug|Release}/base_unittests
     69         *result = result->DirName().DirName();
     70       }
     71       return true;
     72     }
     73     default:
     74       return false;
     75   }
     76 }
     77 
     78 }  // namespace base
     79