arc: Create intermediate directories in c/b/c/arc

chrome/browser/chromeos/arc/arc_print_service.cc

-// Copyright 2016 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 "chrome/browser/chromeos/arc/arc_print_service.h"
-
-#include <utility>
-
-#include "ash/common/shell_delegate.h"
-#include "ash/common/wm_shell.h"
-#include "base/files/file.h"
-#include "base/files/file_util.h"
-#include "base/logging.h"
-#include "base/optional.h"
-#include "base/threading/thread_checker.h"
-#include "components/arc/arc_bridge_service.h"
-#include "content/public/browser/browser_thread.h"
-#include "mojo/edk/embedder/embedder.h"
-#include "net/base/filename_util.h"
-#include "url/gurl.h"
-
-namespace {
-
-base::Optional<base::FilePath> SavePdf(base::File file) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::FILE);
-
-  base::FilePath file_path;
-  base::CreateTemporaryFile(&file_path);
-  base::File out(file_path,
-                 base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE);
-
-  char buf[8192];
-  ssize_t bytes;
-  while ((bytes = file.ReadAtCurrentPos(buf, sizeof(buf))) > 0) {
-    int written = out.WriteAtCurrentPos(buf, bytes);
-    if (written < 0) {
-      LOG(ERROR) << "Error while saving PDF to a disk";
-      return base::nullopt;
-    }
-  }
-
-  return file_path;
-}
-
-void OpenPdf(base::Optional<base::FilePath> file_path) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  if (!file_path)
-    return;
-
-  GURL gurl = net::FilePathToFileURL(file_path.value());
-  ash::WmShell::Get()->delegate()->OpenUrlFromArc(gurl);
-  // TODO(poromov) Delete file after printing. (http://crbug.com/629843)
-}
-
-}  // namespace
-
-namespace arc {
-
-ArcPrintService::ArcPrintService(ArcBridgeService* bridge_service)
-    : ArcService(bridge_service), binding_(this) {
-  arc_bridge_service()->print()->AddObserver(this);
-}
-
-ArcPrintService::~ArcPrintService() {
-  arc_bridge_service()->print()->RemoveObserver(this);
-}
-
-void ArcPrintService::OnInstanceReady() {
-  mojom::PrintInstance* print_instance =
-      arc_bridge_service()->print()->GetInstanceForMethod("Init");
-  DCHECK(print_instance);
-  print_instance->Init(binding_.CreateInterfacePtrAndBind());
-}
-
-void ArcPrintService::Print(mojo::ScopedHandle pdf_data) {
-  if (!pdf_data.is_valid()) {
-    LOG(ERROR) << "handle is invalid";
-    return;
-  }
-
-  mojo::edk::ScopedPlatformHandle scoped_platform_handle;
-  MojoResult mojo_result = mojo::edk::PassWrappedPlatformHandle(
-      pdf_data.release().value(), &scoped_platform_handle);
-  if (mojo_result != MOJO_RESULT_OK) {
-    LOG(ERROR) << "PassWrappedPlatformHandle failed: " << mojo_result;
-    return;
-  }
-
-  base::File file(scoped_platform_handle.release().handle);
-
-  content::BrowserThread::PostTaskAndReplyWithResult(
-      content::BrowserThread::FILE, FROM_HERE,
-      base::Bind(&SavePdf, base::Passed(&file)), base::Bind(&OpenPdf));
-}
-
-}  // namespace arc