Remove base/platform_file.*

base/platform_file_win.cc

Index: base/platform_file_win.cc
diff --git a/base/platform_file_win.cc b/base/platform_file_win.cc
deleted file mode 100644
index af786ab090a3150935b9a255816f0422dd6c3566..0000000000000000000000000000000000000000
--- a/base/platform_file_win.cc
+++ /dev/null
@@ -1,226 +0,0 @@
-// Copyright (c) 2012 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/platform_file.h"
-
-#include <io.h>
-
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/metrics/sparse_histogram.h"
-#include "base/threading/thread_restrictions.h"
-
-namespace base {
-
-bool ClosePlatformFile(PlatformFile file) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  return (CloseHandle(file) != 0);
-}
-
-int64 SeekPlatformFile(PlatformFile file,
-                       PlatformFileWhence whence,
-                       int64 offset) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file == kInvalidPlatformFileValue || offset < 0)
-    return -1;
-
-  LARGE_INTEGER distance, res;
-  distance.QuadPart = offset;
-  DWORD move_method = static_cast<DWORD>(whence);
-  if (!SetFilePointerEx(file, distance, &res, move_method))
-    return -1;
-  return res.QuadPart;
-}
-
-int ReadPlatformFile(PlatformFile file, int64 offset, char* data, int size) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file == kInvalidPlatformFileValue || size < 0)
-    return -1;
-
-  LARGE_INTEGER offset_li;
-  offset_li.QuadPart = offset;
-
-  OVERLAPPED overlapped = {0};
-  overlapped.Offset = offset_li.LowPart;
-  overlapped.OffsetHigh = offset_li.HighPart;
-
-  DWORD bytes_read;
-  if (::ReadFile(file, data, size, &bytes_read, &overlapped) != 0)
-    return bytes_read;
-  if (ERROR_HANDLE_EOF == GetLastError())
-    return 0;
-
-  return -1;
-}
-
-int ReadPlatformFileAtCurrentPos(PlatformFile file, char* data, int size) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file == kInvalidPlatformFileValue || size < 0)
-    return -1;
-
-  DWORD bytes_read;
-  if (::ReadFile(file, data, size, &bytes_read, NULL) != 0)
-    return bytes_read;
-  if (ERROR_HANDLE_EOF == GetLastError())
-    return 0;
-
-  return -1;
-}
-
-int ReadPlatformFileNoBestEffort(PlatformFile file, int64 offset, char* data,
-                                 int size) {
-  return ReadPlatformFile(file, offset, data, size);
-}
-
-int ReadPlatformFileCurPosNoBestEffort(PlatformFile file,
-                                       char* data, int size) {
-  return ReadPlatformFileAtCurrentPos(file, data, size);
-}
-
-int WritePlatformFile(PlatformFile file, int64 offset,
-                      const char* data, int size) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file == kInvalidPlatformFileValue)
-    return -1;
-
-  LARGE_INTEGER offset_li;
-  offset_li.QuadPart = offset;
-
-  OVERLAPPED overlapped = {0};
-  overlapped.Offset = offset_li.LowPart;
-  overlapped.OffsetHigh = offset_li.HighPart;
-
-  DWORD bytes_written;
-  if (::WriteFile(file, data, size, &bytes_written, &overlapped) != 0)
-    return bytes_written;
-
-  return -1;
-}
-
-int WritePlatformFileAtCurrentPos(PlatformFile file, const char* data,
-                                  int size) {
-  return WritePlatformFile(file, 0, data, size);
-}
-
-int WritePlatformFileCurPosNoBestEffort(PlatformFile file,
-                                        const char* data, int size) {
-  return WritePlatformFile(file, 0, data, size);
-}
-
-bool TruncatePlatformFile(PlatformFile file, int64 length) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file == kInvalidPlatformFileValue)
-    return false;
-
-  // Get the current file pointer.
-  LARGE_INTEGER file_pointer;
-  LARGE_INTEGER zero;
-  zero.QuadPart = 0;
-  if (::SetFilePointerEx(file, zero, &file_pointer, FILE_CURRENT) == 0)
-    return false;
-
-  LARGE_INTEGER length_li;
-  length_li.QuadPart = length;
-  // If length > file size, SetFilePointerEx() should extend the file
-  // with zeroes on all Windows standard file systems (NTFS, FATxx).
-  if (!::SetFilePointerEx(file, length_li, NULL, FILE_BEGIN))
-    return false;
-
-  // Set the new file length and move the file pointer to its old position.
-  // This is consistent with ftruncate()'s behavior, even when the file
-  // pointer points to a location beyond the end of the file.
-  return ((::SetEndOfFile(file) != 0) &&
-          (::SetFilePointerEx(file, file_pointer, NULL, FILE_BEGIN) != 0));
-}
-
-bool FlushPlatformFile(PlatformFile file) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  return ((file != kInvalidPlatformFileValue) && ::FlushFileBuffers(file));
-}
-
-bool TouchPlatformFile(PlatformFile file, const base::Time& last_access_time,
-                       const base::Time& last_modified_time) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (file == kInvalidPlatformFileValue)
-    return false;
-
-  FILETIME last_access_filetime = last_access_time.ToFileTime();
-  FILETIME last_modified_filetime = last_modified_time.ToFileTime();
-  return (::SetFileTime(file, NULL, &last_access_filetime,
-                        &last_modified_filetime) != 0);
-}
-
-bool GetPlatformFileInfo(PlatformFile file, PlatformFileInfo* info) {
-  base::ThreadRestrictions::AssertIOAllowed();
-  if (!info)
-    return false;
-
-  BY_HANDLE_FILE_INFORMATION file_info;
-  if (GetFileInformationByHandle(file, &file_info) == 0)
-    return false;
-
-  LARGE_INTEGER size;
-  size.HighPart = file_info.nFileSizeHigh;
-  size.LowPart = file_info.nFileSizeLow;
-  info->size = size.QuadPart;
-  info->is_directory =
-      (file_info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
-  info->is_symbolic_link = false; // Windows doesn't have symbolic links.
-  info->last_modified = base::Time::FromFileTime(file_info.ftLastWriteTime);
-  info->last_accessed = base::Time::FromFileTime(file_info.ftLastAccessTime);
-  info->creation_time = base::Time::FromFileTime(file_info.ftCreationTime);
-  return true;
-}
-
-PlatformFileError LockPlatformFile(PlatformFile file) {
-  BOOL result = LockFile(file, 0, 0, MAXDWORD, MAXDWORD);
-  if (!result)
-    return LastErrorToPlatformFileError(GetLastError());
-  return PLATFORM_FILE_OK;
-}
-
-PlatformFileError UnlockPlatformFile(PlatformFile file) {
-  BOOL result = UnlockFile(file, 0, 0, MAXDWORD, MAXDWORD);
-  if (!result)
-    return LastErrorToPlatformFileError(GetLastError());
-  return PLATFORM_FILE_OK;
-}
-
-PlatformFileError LastErrorToPlatformFileError(DWORD last_error) {
-  switch (last_error) {
-    case ERROR_SHARING_VIOLATION:
-      return PLATFORM_FILE_ERROR_IN_USE;
-    case ERROR_FILE_EXISTS:
-      return PLATFORM_FILE_ERROR_EXISTS;
-    case ERROR_FILE_NOT_FOUND:
-    case ERROR_PATH_NOT_FOUND:
-      return PLATFORM_FILE_ERROR_NOT_FOUND;
-    case ERROR_ACCESS_DENIED:
-      return PLATFORM_FILE_ERROR_ACCESS_DENIED;
-    case ERROR_TOO_MANY_OPEN_FILES:
-      return PLATFORM_FILE_ERROR_TOO_MANY_OPENED;
-    case ERROR_OUTOFMEMORY:
-    case ERROR_NOT_ENOUGH_MEMORY:
-      return PLATFORM_FILE_ERROR_NO_MEMORY;
-    case ERROR_HANDLE_DISK_FULL:
-    case ERROR_DISK_FULL:
-    case ERROR_DISK_RESOURCES_EXHAUSTED:
-      return PLATFORM_FILE_ERROR_NO_SPACE;
-    case ERROR_USER_MAPPED_FILE:
-      return PLATFORM_FILE_ERROR_INVALID_OPERATION;
-    case ERROR_NOT_READY:
-    case ERROR_SECTOR_NOT_FOUND:
-    case ERROR_DEV_NOT_EXIST:
-    case ERROR_IO_DEVICE:
-    case ERROR_FILE_CORRUPT:
-    case ERROR_DISK_CORRUPT:
-      return PLATFORM_FILE_ERROR_IO;
-    default:
-      UMA_HISTOGRAM_SPARSE_SLOWLY("PlatformFile.UnknownErrors.Windows",
-                                  last_error);
-      return PLATFORM_FILE_ERROR_FAILED;
-  }
-}
-
-}  // namespace base