Revert of Initial version of new file wrapper

webrtc/base/file_win.cc

-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "webrtc/base/file.h"
-
-#include <io.h>
-#include "webrtc/base/win32.h"
-
-#include <limits>  // NOLINT: win32.h should be considered a system header
-
-#include "webrtc/base/checks.h"
-
-namespace rtc {
-
-File File::Open(const std::string& path) {
-  HANDLE handle =
-      ::CreateFile(ToUtf16(path).c_str(), GENERIC_READ | GENERIC_WRITE, 0,
-                   nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
-  return File(handle);
-}
-
-size_t File::Write(const uint8_t* data, size_t length) {
-  RTC_DCHECK_LT(length, std::numeric_limits<DWORD>::max());
-  size_t total_written = 0;
-  do {
-    DWORD written;
-    if (!::WriteFile(file_, data + total_written,
-                     static_cast<DWORD>(length - total_written), &written,
-                     nullptr)) {
-      break;
-    }
-    total_written += written;
-  } while (total_written < length);
-  return total_written;
-}
-
-size_t File::Read(uint8_t* buffer, size_t length) {
-  RTC_DCHECK_LT(length, std::numeric_limits<DWORD>::max());
-  size_t total_read = 0;
-  do {
-    DWORD read;
-    if (!::ReadFile(file_, buffer + total_read,
-                    static_cast<DWORD>(length - total_read), &read, nullptr)) {
-      break;
-    }
-    total_read += read;
-  } while (total_read < length);
-  return total_read;
-}
-
-size_t File::WriteAt(const uint8_t* data, size_t length, size_t offset) {
-  RTC_DCHECK_LT(length, std::numeric_limits<DWORD>::max());
-  size_t total_written = 0;
-  do {
-    DWORD written;
-
-    LARGE_INTEGER offset_li;
-    offset_li.QuadPart = offset + total_written;
-
-    OVERLAPPED overlapped = {0};
-    overlapped.Offset = offset_li.LowPart;
-    overlapped.OffsetHigh = offset_li.HighPart;
-
-    if (!::WriteFile(file_, data + total_written,
-                     static_cast<DWORD>(length - total_written), &written,
-                     &overlapped)) {
-      break;
-    }
-
-    total_written += written;
-  } while (total_written < length);
-  return total_written;
-}
-
-size_t File::ReadAt(uint8_t* buffer, size_t length, size_t offset) {
-  RTC_DCHECK_LT(length, std::numeric_limits<DWORD>::max());
-  size_t total_read = 0;
-  do {
-    DWORD read;
-
-    LARGE_INTEGER offset_li;
-    offset_li.QuadPart = offset + total_read;
-
-    OVERLAPPED overlapped = {0};
-    overlapped.Offset = offset_li.LowPart;
-    overlapped.OffsetHigh = offset_li.HighPart;
-
-    if (!::ReadFile(file_, buffer + total_read,
-                    static_cast<DWORD>(length - total_read), &read,
-                    &overlapped)) {
-      break;
-    }
-
-    total_read += read;
-  } while (total_read < length);
-  return total_read;
-}
-
-bool File::Seek(size_t offset) {
-  LARGE_INTEGER distance;
-  distance.QuadPart = offset;
-  return SetFilePointerEx(file_, distance, nullptr, FILE_BEGIN) != 0;
-}
-
-bool File::Close() {
-  if (file_ == kInvalidPlatformFileValue)
-    return false;
-  bool ret = CloseHandle(file_) != 0;
-  file_ = kInvalidPlatformFileValue;
-  return ret;
-}
-
-}  // namespace rtc