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Unified Diff: mojo/services/files/public/cpp/lib/input_stream_file.cc

Issue 1388413005: Move //mojo/services/X/public/... to //mojo/services/X/... (part 1). (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 5 years, 2 months ago
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Index: mojo/services/files/public/cpp/lib/input_stream_file.cc
diff --git a/mojo/services/files/public/cpp/lib/input_stream_file.cc b/mojo/services/files/public/cpp/lib/input_stream_file.cc
deleted file mode 100644
index 7408442575dd912606493f49849172e005d57a32..0000000000000000000000000000000000000000
--- a/mojo/services/files/public/cpp/lib/input_stream_file.cc
+++ /dev/null
@@ -1,302 +0,0 @@
-// Copyright 2015 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 "mojo/services/files/public/cpp/input_stream_file.h"
-
-#include <utility>
-
-#include "mojo/public/cpp/environment/logging.h"
-
-namespace files_impl {
-
-InputStreamFile::PendingRead::PendingRead(uint32_t num_bytes,
- const ReadCallback& callback)
- : num_bytes(num_bytes), callback(callback) {}
-
-InputStreamFile::PendingRead::~PendingRead() {}
-
-// static
-std::unique_ptr<InputStreamFile> InputStreamFile::Create(
- Client* client,
- mojo::InterfaceRequest<mojo::files::File> request) {
- // TODO(vtl): Use make_unique when we have C++14.
- return std::unique_ptr<InputStreamFile>(
- new InputStreamFile(client, request.Pass()));
-}
-
-InputStreamFile::~InputStreamFile() {
- if (was_destroyed_)
- *was_destroyed_ = true;
-}
-
-InputStreamFile::InputStreamFile(
- Client* client,
- mojo::InterfaceRequest<mojo::files::File> request)
- : client_(client),
- is_closed_(false),
- was_destroyed_(nullptr),
- binding_(this, request.Pass()) {
- binding_.set_connection_error_handler([this]() {
- if (client_)
- client_->OnClosed();
- });
-}
-
-void InputStreamFile::Close(const CloseCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED);
- return;
- }
-
- // TODO(vtl): Call pending read callbacks?
-
- is_closed_ = true;
- callback.Run(mojo::files::Error::OK);
-
- if (client_)
- client_->OnClosed();
-}
-
-void InputStreamFile::Read(uint32_t num_bytes_to_read,
- int64_t offset,
- mojo::files::Whence whence,
- const ReadCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED, mojo::Array<uint8_t>());
- return;
- }
-
- if (offset != 0 || whence != mojo::files::Whence::FROM_CURRENT) {
- // TODO(vtl): Is this the "right" behavior?
- callback.Run(mojo::files::Error::INVALID_ARGUMENT, mojo::Array<uint8_t>());
- return;
- }
-
- bool should_start_read = pending_read_queue_.empty();
- pending_read_queue_.push_back(PendingRead(num_bytes_to_read, callback));
- if (should_start_read)
- StartRead();
-}
-
-void InputStreamFile::Write(mojo::Array<uint8_t> bytes_to_write,
- int64_t offset,
- mojo::files::Whence whence,
- const WriteCallback& callback) {
- MOJO_DCHECK(!bytes_to_write.is_null());
-
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED, 0);
- return;
- }
-
- // TODO(vtl): Is this what we want? (Also is "unavailable" right? Maybe
- // unsupported/EINVAL is better.)
- callback.Run(mojo::files::Error::UNAVAILABLE, 0);
-}
-
-void InputStreamFile::ReadToStream(mojo::ScopedDataPipeProducerHandle source,
- int64_t offset,
- mojo::files::Whence whence,
- int64_t num_bytes_to_read,
- const ReadToStreamCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED);
- return;
- }
-
- // TODO(vtl)
- MOJO_DLOG(ERROR) << "Not implemented";
- callback.Run(mojo::files::Error::UNIMPLEMENTED);
-}
-
-void InputStreamFile::WriteFromStream(mojo::ScopedDataPipeConsumerHandle sink,
- int64_t offset,
- mojo::files::Whence whence,
- const WriteFromStreamCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED);
- return;
- }
-
- // TODO(vtl): Is this what we want? (Also is "unavailable" right? Maybe
- // unsupported/EINVAL is better.)
- callback.Run(mojo::files::Error::UNAVAILABLE);
-}
-
-void InputStreamFile::Tell(const TellCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED, 0);
- return;
- }
-
- // TODO(vtl): Is this what we want? (Also is "unavailable" right? Maybe
- // unsupported/EINVAL is better.)
- callback.Run(mojo::files::Error::UNAVAILABLE, 0);
-}
-
-void InputStreamFile::Seek(int64_t offset,
- mojo::files::Whence whence,
- const SeekCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED, 0);
- return;
- }
-
- // TODO(vtl): Is this what we want? (Also is "unavailable" right? Maybe
- // unsupported/EINVAL is better.)
- callback.Run(mojo::files::Error::UNAVAILABLE, 0);
-}
-
-void InputStreamFile::Stat(const StatCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED, nullptr);
- return;
- }
-
- // TODO(vtl)
- MOJO_DLOG(ERROR) << "Not implemented";
- callback.Run(mojo::files::Error::UNIMPLEMENTED, nullptr);
-}
-
-void InputStreamFile::Truncate(int64_t size, const TruncateCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED);
- return;
- }
-
- // TODO(vtl): Is this what we want? (Also is "unavailable" right? Maybe
- // unsupported/EINVAL is better.)
- callback.Run(mojo::files::Error::UNAVAILABLE);
-}
-
-void InputStreamFile::Touch(mojo::files::TimespecOrNowPtr atime,
- mojo::files::TimespecOrNowPtr mtime,
- const TouchCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED);
- return;
- }
-
- // TODO(vtl): Is this what we want? (Also is "unavailable" right? Maybe
- // unsupported/EINVAL is better.)
- callback.Run(mojo::files::Error::UNAVAILABLE);
-}
-
-void InputStreamFile::Dup(mojo::InterfaceRequest<mojo::files::File> file,
- const DupCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED);
- return;
- }
-
- // TODO(vtl): Is this what we want? (Also is "unavailable" right? Maybe
- // unsupported/EINVAL is better.)
- callback.Run(mojo::files::Error::UNAVAILABLE);
-}
-
-void InputStreamFile::Reopen(mojo::InterfaceRequest<mojo::files::File> file,
- uint32_t open_flags,
- const ReopenCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED);
- return;
- }
-
- // TODO(vtl): Is this what we want? (Also is "unavailable" right? Maybe
- // unsupported/EINVAL is better.)
- callback.Run(mojo::files::Error::UNAVAILABLE);
-}
-
-void InputStreamFile::AsBuffer(const AsBufferCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED, mojo::ScopedSharedBufferHandle());
- return;
- }
-
- // TODO(vtl): Is this what we want? (Also is "unavailable" right? Maybe
- // unsupported/EINVAL is better.)
- callback.Run(mojo::files::Error::UNAVAILABLE,
- mojo::ScopedSharedBufferHandle());
-}
-
-void InputStreamFile::Ioctl(uint32_t request,
- mojo::Array<uint32_t> in_values,
- const IoctlCallback& callback) {
- if (is_closed_) {
- callback.Run(mojo::files::Error::CLOSED, mojo::Array<uint32_t>());
- return;
- }
-
- callback.Run(mojo::files::Error::UNIMPLEMENTED, mojo::Array<uint32_t>());
-}
-
-void InputStreamFile::StartRead() {
- MOJO_DCHECK(!pending_read_queue_.empty());
-
- // If we don't have a client, just drain all the reads.
- if (!client_) {
- while (!pending_read_queue_.empty()) {
- // TODO(vtl): Is this what we want?
- pending_read_queue_.front().callback.Run(mojo::files::Error::UNAVAILABLE,
- mojo::Array<uint8_t>());
- pending_read_queue_.pop_front();
- }
- return;
- }
-
- do {
- // Find a non-zero-byte read, completing any zero-byte reads at the front of
- // the queue. Note that we do this in FIFO order (thus couldn't have
- // completed them earlier).
- while (!pending_read_queue_.front().num_bytes) {
- pending_read_queue_.front().callback.Run(mojo::files::Error::OK,
- mojo::Array<uint8_t>());
- pending_read_queue_.pop_front();
-
- if (pending_read_queue_.empty())
- return;
- }
-
- // Binding |this| is OK, since the client must not call the callback if we
- // are destroyed.
- mojo::files::Error error = mojo::files::Error::INTERNAL;
- mojo::Array<uint8_t> data;
- // Detect if we were destroyed inside |RequestData()|.
- bool was_destroyed = false;
- MOJO_CHECK(!was_destroyed_);
- was_destroyed_ = &was_destroyed;
- bool synchronous_completion = client_->RequestData(
- pending_read_queue_.front().num_bytes, &error, &data,
- [this](mojo::files::Error e, mojo::Array<uint8_t> d) {
- CompleteRead(e, d.Pass());
- if (!pending_read_queue_.empty())
- StartRead();
- });
- if (was_destroyed)
- return;
- was_destroyed_ = nullptr;
- if (synchronous_completion)
- CompleteRead(error, data.Pass());
- else
- return; // Asynchronous completion.
- } while (!pending_read_queue_.empty());
-}
-
-void InputStreamFile::CompleteRead(mojo::files::Error error,
- mojo::Array<uint8_t> data) {
- MOJO_CHECK(!pending_read_queue_.empty());
-
- if (error != mojo::files::Error::OK) {
- pending_read_queue_.front().callback.Run(error, mojo::Array<uint8_t>());
- pending_read_queue_.pop_front();
- return;
- }
-
- MOJO_CHECK(!data.is_null());
- MOJO_CHECK(data.size() <= pending_read_queue_.front().num_bytes);
- pending_read_queue_.front().callback.Run(mojo::files::Error::OK, data.Pass());
- pending_read_queue_.pop_front();
-}
-
-} // namespace files_impl
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