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- // 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 "net/base/file_stream.h"
- #include <utility>
- #include "net/base/file_stream_context.h"
- #include "net/base/net_errors.h"
- namespace net {
- FileStream::FileStream(const scoped_refptr<base::TaskRunner>& task_runner)
- : context_(std::make_unique<Context>(task_runner)) {}
- FileStream::FileStream(base::File file,
- const scoped_refptr<base::TaskRunner>& task_runner)
- : context_(std::make_unique<Context>(std::move(file), task_runner)) {}
- FileStream::~FileStream() {
- context_.release()->Orphan();
- }
- int FileStream::Open(const base::FilePath& path,
- int open_flags,
- CompletionOnceCallback callback) {
- if (IsOpen()) {
- DLOG(FATAL) << "File is already open!";
- return ERR_UNEXPECTED;
- }
- DCHECK(open_flags & base::File::FLAG_ASYNC);
- context_->Open(path, open_flags, std::move(callback));
- return ERR_IO_PENDING;
- }
- int FileStream::Close(CompletionOnceCallback callback) {
- context_->Close(std::move(callback));
- return ERR_IO_PENDING;
- }
- bool FileStream::IsOpen() const {
- return context_->IsOpen();
- }
- int FileStream::Seek(int64_t offset, Int64CompletionOnceCallback callback) {
- if (!IsOpen())
- return ERR_UNEXPECTED;
- context_->Seek(offset, std::move(callback));
- return ERR_IO_PENDING;
- }
- int FileStream::Read(IOBuffer* buf,
- int buf_len,
- CompletionOnceCallback callback) {
- if (!IsOpen())
- return ERR_UNEXPECTED;
- // read(..., 0) will return 0, which indicates end-of-file.
- DCHECK_GT(buf_len, 0);
- return context_->Read(buf, buf_len, std::move(callback));
- }
- int FileStream::Write(IOBuffer* buf,
- int buf_len,
- CompletionOnceCallback callback) {
- if (!IsOpen())
- return ERR_UNEXPECTED;
- DCHECK_GE(buf_len, 0);
- return context_->Write(buf, buf_len, std::move(callback));
- }
- int FileStream::GetFileInfo(base::File::Info* file_info,
- CompletionOnceCallback callback) {
- if (!IsOpen())
- return ERR_UNEXPECTED;
- context_->GetFileInfo(file_info, std::move(callback));
- return ERR_IO_PENDING;
- }
- int FileStream::Flush(CompletionOnceCallback callback) {
- if (!IsOpen())
- return ERR_UNEXPECTED;
- context_->Flush(std::move(callback));
- return ERR_IO_PENDING;
- }
- } // namespace net
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