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// Copyright 2012 The Chromium Authors
// 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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