15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/file_stream.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/file_stream_context.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "net/base/net_errors.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace net { 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 120529e5d033099cbfc42635f6f6183833b09dff6eBen MurdochFileStream::FileStream(const scoped_refptr<base::TaskRunner>& task_runner) 130529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch : context_(new Context(task_runner)) { 147d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles)} 157d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 1623730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles)FileStream::FileStream(base::File file, 1723730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles) const scoped_refptr<base::TaskRunner>& task_runner) 180529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch : context_(new Context(file.Pass(), task_runner)) { 1923730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles)} 2023730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)FileStream::~FileStream() { 22c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch context_.release()->Orphan(); 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int FileStream::Open(const base::FilePath& path, int open_flags, 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CompletionCallback& callback) { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (IsOpen()) { 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DLOG(FATAL) << "File is already open!"; 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ERR_UNEXPECTED; 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3223730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles) DCHECK(open_flags & base::File::FLAG_ASYNC); 33116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch context_->Open(path, open_flags, callback); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ERR_IO_PENDING; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3758537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)int FileStream::Close(const CompletionCallback& callback) { 38116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch context_->Close(callback); 3958537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) return ERR_IO_PENDING; 4058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)} 4158537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool FileStream::IsOpen() const { 4323730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles) return context_->file().IsValid(); 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 46116680a4aac90f2aa7413d9095a592090648e557Ben Murdochint FileStream::Seek(base::File::Whence whence, 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int64 offset, 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const Int64CompletionCallback& callback) { 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!IsOpen()) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ERR_UNEXPECTED; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 52116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch context_->Seek(whence, offset, callback); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ERR_IO_PENDING; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int FileStream::Read(IOBuffer* buf, 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int buf_len, 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CompletionCallback& callback) { 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!IsOpen()) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ERR_UNEXPECTED; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // read(..., 0) will return 0, which indicates end-of-file. 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK_GT(buf_len, 0); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 65116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch return context_->Read(buf, buf_len, callback); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int FileStream::Write(IOBuffer* buf, 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int buf_len, 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CompletionCallback& callback) { 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!IsOpen()) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ERR_UNEXPECTED; 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 74116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch DCHECK_GE(buf_len, 0); 75116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch return context_->Write(buf, buf_len, callback); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int FileStream::Flush(const CompletionCallback& callback) { 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!IsOpen()) 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ERR_UNEXPECTED; 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 82116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch context_->Flush(callback); 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return ERR_IO_PENDING; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8623730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles)const base::File& FileStream::GetFileForTesting() const { 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return context_->file(); 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace net 91