onlineupdate/source/update/updater/win_dirent.cxx

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifdef _WIN32
   8 #include "win_dirent.h"
   9 #include <errno.h>
  10 #include <string.h>
  11
  12 // This file implements the minimum set of dirent APIs used by updater.cpp on
  13 // Windows.  If updater.cpp is modified to use more of this API, we need to
  14 // implement those parts here too.
  15
  16 static dirent gDirEnt;
  17
  18 DIR::DIR(const WCHAR* path)
  19     : findHandle(INVALID_HANDLE_VALUE)
  20 {
  21     memset(name, 0, sizeof(name));
  22     wcsncpy(name, path, sizeof(name)/sizeof(name[0]));
  23     wcsncat(name, L"\\*", sizeof(name)/sizeof(name[0]) - wcslen(name) - 1);
  24 }
  25
  26 DIR::~DIR()
  27 {
  28     if (findHandle != INVALID_HANDLE_VALUE)
  29     {
  30         FindClose(findHandle);
  31     }
  32 }
  33
  34 dirent::dirent()
  35 {
  36     d_name[0] = L'\0';
  37 }
  38
  39 DIR*
  40 opendir(const WCHAR* path)
  41 {
  42     return new DIR(path);
  43 }
  44
  45 int
  46 closedir(DIR* dir)
  47 {
  48     delete dir;
  49     return 0;
  50 }
  51
  52 dirent* readdir(DIR* dir)
  53 {
  54     WIN32_FIND_DATAW data;
  55     if (dir->findHandle != INVALID_HANDLE_VALUE)
  56     {
  57         BOOL result = FindNextFileW(dir->findHandle, &data);
  58         if (!result)
  59         {
  60             if (GetLastError() != ERROR_FILE_NOT_FOUND)
  61             {
  62                 errno = ENOENT;
  63             }
  64             return 0;
  65         }
  66     }
  67     else
  68     {
  69         // Reading the first directory entry
  70         dir->findHandle = FindFirstFileW(dir->name, &data);
  71         if (dir->findHandle == INVALID_HANDLE_VALUE)
  72         {
  73             if (GetLastError() == ERROR_FILE_NOT_FOUND)
  74             {
  75                 errno = ENOENT;
  76             }
  77             else
  78             {
  79                 errno = EBADF;
  80             }
  81             return 0;
  82         }
  83     }
  84     memset(gDirEnt.d_name, 0, sizeof(gDirEnt.d_name));
  85     wcsncpy(gDirEnt.d_name, data.cFileName,
  86             sizeof(gDirEnt.d_name)/sizeof(gDirEnt.d_name[0]));
  87     return &gDirEnt;
  88 }
  89 #endif