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base_paths_win.cc

// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/base_paths_win.h"

#include <windows.h>
#include <shlobj.h>

#include "base/file_path.h"
#include "base/file_util.h"
#include "base/path_service.h"
#include "base/win_util.h"

// http://blogs.msdn.com/oldnewthing/archive/2004/10/25/247180.aspx
extern "C" IMAGE_DOS_HEADER __ImageBase;

namespace base {

bool PathProviderWin(int key, FilePath* result) {

  // We need to go compute the value. It would be nice to support paths with
  // names longer than MAX_PATH, but the system functions don't seem to be
  // designed for it either, with the exception of GetTempPath (but other
  // things will surely break if the temp path is too long, so we don't bother
  // handling it.
  wchar_t system_buffer[MAX_PATH];
  system_buffer[0] = 0;

  FilePath cur;
  switch (key) {
    case base::FILE_EXE:
      GetModuleFileName(NULL, system_buffer, MAX_PATH);
      cur = FilePath(system_buffer);
      break;
    case base::FILE_MODULE: {
      // the resource containing module is assumed to be the one that
      // this code lives in, whether that's a dll or exe
      HMODULE this_module = reinterpret_cast<HMODULE>(&__ImageBase);
      GetModuleFileName(this_module, system_buffer, MAX_PATH);
      cur = FilePath(system_buffer);
      break;
    }
    case base::DIR_WINDOWS:
      GetWindowsDirectory(system_buffer, MAX_PATH);
      cur = FilePath(system_buffer);
      break;
    case base::DIR_SYSTEM:
      GetSystemDirectory(system_buffer, MAX_PATH);
      cur = FilePath(system_buffer);
      break;
    case base::DIR_PROGRAM_FILES:
      if (FAILED(SHGetFolderPath(NULL, CSIDL_PROGRAM_FILES, NULL,
                                 SHGFP_TYPE_CURRENT, system_buffer)))
        return false;
      cur = FilePath(system_buffer);
      break;
    case base::DIR_IE_INTERNET_CACHE:
      if (FAILED(SHGetFolderPath(NULL, CSIDL_INTERNET_CACHE, NULL,
                                 SHGFP_TYPE_CURRENT, system_buffer)))
        return false;
      cur = FilePath(system_buffer);
      break;
    case base::DIR_COMMON_START_MENU:
      if (FAILED(SHGetFolderPath(NULL, CSIDL_COMMON_PROGRAMS, NULL,
                                 SHGFP_TYPE_CURRENT, system_buffer)))
        return false;
      cur = FilePath(system_buffer);
      break;
    case base::DIR_START_MENU:
      if (FAILED(SHGetFolderPath(NULL, CSIDL_PROGRAMS, NULL,
                                 SHGFP_TYPE_CURRENT, system_buffer)))
        return false;
      cur = FilePath(system_buffer);
      break;
    case base::DIR_APP_DATA:
      if (FAILED(SHGetFolderPath(NULL, CSIDL_APPDATA, NULL, SHGFP_TYPE_CURRENT,
                                 system_buffer)))
        return false;
      cur = FilePath(system_buffer);
      break;
    case base::DIR_PROFILE:
      if (FAILED(SHGetFolderPath(NULL, CSIDL_PROFILE, NULL, SHGFP_TYPE_CURRENT,
                                 system_buffer)))
        return false;
      cur = FilePath(system_buffer);
      break;
    case base::DIR_LOCAL_APP_DATA_LOW:
      if (win_util::GetWinVersion() < win_util::WINVERSION_VISTA) {
        return false;
      }
      // TODO(nsylvain): We should use SHGetKnownFolderPath instead. Bug 1281128
      if (FAILED(SHGetFolderPath(NULL, CSIDL_APPDATA, NULL, SHGFP_TYPE_CURRENT,
                                 system_buffer)))
        return false;
      cur = FilePath(system_buffer).DirName().AppendASCII("LocalLow");
      break;
    case base::DIR_LOCAL_APP_DATA:
      if (FAILED(SHGetFolderPath(NULL, CSIDL_LOCAL_APPDATA, NULL,
                                 SHGFP_TYPE_CURRENT, system_buffer)))
        return false;
      cur = FilePath(system_buffer);
      break;
    case base::DIR_SOURCE_ROOT: {
      FilePath executableDir;
      // On Windows, unit tests execute two levels deep from the source root.
      // For example:  chrome/{Debug|Release}/ui_tests.exe
      PathService::Get(base::DIR_EXE, &executableDir);
      cur = executableDir.DirName().DirName();
      FilePath checkedPath =
          cur.Append(FILE_PATH_LITERAL("base/base_paths_win.cc"));
      if (!file_util::PathExists(checkedPath)) {
        // Check for WebKit-only checkout. Executable files are put into
        // WebKit/WebKit/chromium/{Debug|Relese}, and we should return
        // WebKit/WebKit/chromium.
        cur = executableDir.DirName();
      }
      break;
    }
    default:
      return false;
  }

  *result = cur;
  return true;
}

}  // namespace base

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