base/files/file.cc

   1 // Copyright (c) 2011 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/files/file.h"
   6
   7 // TODO(rvargas): remove this (needed for kInvalidPlatformFileValue).
   8 #include "base/platform_file.h"
   9
  10 namespace base {
  11
  12 File::Info::Info()
  13     : size(0),
  14       is_directory(false),
  15       is_symbolic_link(false) {
  16 }
  17
  18 File::Info::~Info() {
  19 }
  20
  21 File::File()
  22     : file_(kInvalidPlatformFileValue),
  23       error_details_(FILE_ERROR_FAILED),
  24       created_(false),
  25       async_(false) {
  26 }
  27
  28 #if !defined(OS_NACL)
  29 File::File(const FilePath& name, uint32 flags)
  30     : file_(kInvalidPlatformFileValue),
  31       error_details_(FILE_OK),
  32       created_(false),
  33       async_(false) {
  34   Initialize(name, flags);
  35 }
  36 #endif
  37
  38 File::File(PlatformFile platform_file)
  39     : file_(platform_file),
  40       error_details_(FILE_OK),
  41       created_(false),
  42       async_(false) {
  43 #if defined(OS_POSIX)
  44   DCHECK_GE(platform_file, -1);
  45 #endif
  46 }
  47
  48 File::File(Error error_details)
  49     : file_(kInvalidPlatformFileValue),
  50       error_details_(error_details),
  51       created_(false),
  52       async_(false) {
  53 }
  54
  55 File::File(RValue other)
  56     : file_(other.object->TakePlatformFile()),
  57       error_details_(other.object->error_details()),
  58       created_(other.object->created()),
  59       async_(other.object->async_) {
  60 }
  61
  62 File::~File() {
  63   // Go through the AssertIOAllowed logic.
  64   Close();
  65 }
  66
  67 File& File::operator=(RValue other) {
  68   if (this != other.object) {
  69     Close();
  70     SetPlatformFile(other.object->TakePlatformFile());
  71     error_details_ = other.object->error_details();
  72     created_ = other.object->created();
  73     async_ = other.object->async_;
  74   }
  75   return *this;
  76 }
  77
  78 #if !defined(OS_NACL)
  79 void File::Initialize(const FilePath& name, uint32 flags) {
  80   if (name.ReferencesParent()) {
  81     error_details_ = FILE_ERROR_ACCESS_DENIED;
  82     return;
  83   }
  84   InitializeUnsafe(name, flags);
  85 }
  86 #endif
  87
  88 std::string File::ErrorToString(Error error) {
  89   switch (error) {
  90     case FILE_OK:
  91       return "FILE_OK";
  92     case FILE_ERROR_FAILED:
  93       return "FILE_ERROR_FAILED";
  94     case FILE_ERROR_IN_USE:
  95       return "FILE_ERROR_IN_USE";
  96     case FILE_ERROR_EXISTS:
  97       return "FILE_ERROR_EXISTS";
  98     case FILE_ERROR_NOT_FOUND:
  99       return "FILE_ERROR_NOT_FOUND";
 100     case FILE_ERROR_ACCESS_DENIED:
 101       return "FILE_ERROR_ACCESS_DENIED";
 102     case FILE_ERROR_TOO_MANY_OPENED:
 103       return "FILE_ERROR_TOO_MANY_OPENED";
 104     case FILE_ERROR_NO_MEMORY:
 105       return "FILE_ERROR_NO_MEMORY";
 106     case FILE_ERROR_NO_SPACE:
 107       return "FILE_ERROR_NO_SPACE";
 108     case FILE_ERROR_NOT_A_DIRECTORY:
 109       return "FILE_ERROR_NOT_A_DIRECTORY";
 110     case FILE_ERROR_INVALID_OPERATION:
 111       return "FILE_ERROR_INVALID_OPERATION";
 112     case FILE_ERROR_SECURITY:
 113       return "FILE_ERROR_SECURITY";
 114     case FILE_ERROR_ABORT:
 115       return "FILE_ERROR_ABORT";
 116     case FILE_ERROR_NOT_A_FILE:
 117       return "FILE_ERROR_NOT_A_FILE";
 118     case FILE_ERROR_NOT_EMPTY:
 119       return "FILE_ERROR_NOT_EMPTY";
 120     case FILE_ERROR_INVALID_URL:
 121       return "FILE_ERROR_INVALID_URL";
 122     case FILE_ERROR_IO:
 123       return "FILE_ERROR_IO";
 124     case FILE_ERROR_MAX:
 125       break;
 126   }
 127
 128   NOTREACHED();
 129   return "";
 130 }
 131
 132 }  // namespace base