b5c48b97f6
Ongoing fixes and improvements, transient suppressor is gone. Also, dropping isac because it doesn't seem to be useful, and is just build system deadweight now. Upstream references: Version: 131.0.6778.200 WebRTC: 79aff54b0fa9238ce3518dd9eaf9610cd6f22e82 Chromium: 2a19506ad24af755f2a215a4c61f775393e0db42
137 lines
3.4 KiB
C++
137 lines
3.4 KiB
C++
/*
|
|
* Copyright (c) 2012 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 "rtc_base/system/file_wrapper.h"
|
|
|
|
#include <stddef.h>
|
|
|
|
#include <cerrno>
|
|
#include <cstdint>
|
|
#include <optional>
|
|
#include <string>
|
|
|
|
#include "absl/strings/string_view.h"
|
|
#include "rtc_base/checks.h"
|
|
#include "rtc_base/numerics/safe_conversions.h"
|
|
|
|
#ifdef _WIN32
|
|
#include <Windows.h>
|
|
#else
|
|
#endif
|
|
|
|
#include <utility>
|
|
|
|
namespace webrtc {
|
|
namespace {
|
|
FILE* FileOpen(absl::string_view file_name_utf8, bool read_only, int* error) {
|
|
RTC_CHECK_EQ(file_name_utf8.find_first_of('\0'), absl::string_view::npos)
|
|
<< "Invalid filename, containing NUL character";
|
|
std::string file_name(file_name_utf8);
|
|
#if defined(_WIN32)
|
|
int len = MultiByteToWideChar(CP_UTF8, 0, file_name.c_str(), -1, nullptr, 0);
|
|
std::wstring wstr(len, 0);
|
|
MultiByteToWideChar(CP_UTF8, 0, file_name.c_str(), -1, &wstr[0], len);
|
|
FILE* file = _wfopen(wstr.c_str(), read_only ? L"rb" : L"wb");
|
|
#else
|
|
FILE* file = fopen(file_name.c_str(), read_only ? "rb" : "wb");
|
|
#endif
|
|
if (!file && error) {
|
|
*error = errno;
|
|
}
|
|
return file;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
// static
|
|
FileWrapper FileWrapper::OpenReadOnly(absl::string_view file_name_utf8) {
|
|
return FileWrapper(FileOpen(file_name_utf8, true, nullptr));
|
|
}
|
|
|
|
// static
|
|
FileWrapper FileWrapper::OpenWriteOnly(absl::string_view file_name_utf8,
|
|
int* error /*=nullptr*/) {
|
|
return FileWrapper(FileOpen(file_name_utf8, false, error));
|
|
}
|
|
|
|
FileWrapper::FileWrapper(FileWrapper&& other) {
|
|
operator=(std::move(other));
|
|
}
|
|
|
|
FileWrapper& FileWrapper::operator=(FileWrapper&& other) {
|
|
Close();
|
|
file_ = other.file_;
|
|
other.file_ = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
bool FileWrapper::SeekRelative(int64_t offset) {
|
|
RTC_DCHECK(file_);
|
|
return fseek(file_, rtc::checked_cast<long>(offset), SEEK_CUR) == 0;
|
|
}
|
|
|
|
bool FileWrapper::SeekTo(int64_t position) {
|
|
RTC_DCHECK(file_);
|
|
return fseek(file_, rtc::checked_cast<long>(position), SEEK_SET) == 0;
|
|
}
|
|
|
|
std::optional<size_t> FileWrapper::FileSize() {
|
|
if (file_ == nullptr)
|
|
return std::nullopt;
|
|
long original_position = ftell(file_);
|
|
if (original_position < 0)
|
|
return std::nullopt;
|
|
int seek_error = fseek(file_, 0, SEEK_END);
|
|
if (seek_error)
|
|
return std::nullopt;
|
|
long file_size = ftell(file_);
|
|
seek_error = fseek(file_, original_position, SEEK_SET);
|
|
if (seek_error)
|
|
return std::nullopt;
|
|
return rtc::checked_cast<size_t>(file_size);
|
|
}
|
|
|
|
bool FileWrapper::Flush() {
|
|
RTC_DCHECK(file_);
|
|
return fflush(file_) == 0;
|
|
}
|
|
|
|
size_t FileWrapper::Read(void* buf, size_t length) {
|
|
RTC_DCHECK(file_);
|
|
return fread(buf, 1, length, file_);
|
|
}
|
|
|
|
bool FileWrapper::ReadEof() const {
|
|
RTC_DCHECK(file_);
|
|
return feof(file_);
|
|
}
|
|
|
|
bool FileWrapper::Write(const void* buf, size_t length) {
|
|
RTC_DCHECK(file_);
|
|
return fwrite(buf, 1, length, file_) == length;
|
|
}
|
|
|
|
bool FileWrapper::Close() {
|
|
if (file_ == nullptr)
|
|
return true;
|
|
|
|
bool success = fclose(file_) == 0;
|
|
file_ = nullptr;
|
|
return success;
|
|
}
|
|
|
|
FILE* FileWrapper::Release() {
|
|
FILE* file = file_;
|
|
file_ = nullptr;
|
|
return file;
|
|
}
|
|
|
|
} // namespace webrtc
|