[WIP] Provided file system from NACL.

chrome/browser/chromeos/fileapi/file_system_backend.cc

 // Copyright 2013 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/fileapi/file_system_backend.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/stringprintf.h"
@@ skipping 16 matching lines @@
 namespace chromeos {
 
 // static
 bool FileSystemBackend::CanHandleURL(const storage::FileSystemURL& url) {
   if (!url.is_valid())
     return false;
   return url.type() == storage::kFileSystemTypeNativeLocal ||
          url.type() == storage::kFileSystemTypeRestrictedNativeLocal ||
          url.type() == storage::kFileSystemTypeDrive ||
          url.type() == storage::kFileSystemTypeProvided ||
+         url.type() == storage::kFileSystemTypePluginProvided ||
          url.type() == storage::kFileSystemTypeDeviceMediaAsFileStorage;
 }
 
 FileSystemBackend::FileSystemBackend(
     FileSystemBackendDelegate* drive_delegate,
     FileSystemBackendDelegate* file_system_provider_delegate,
     FileSystemBackendDelegate* mtp_delegate,
     scoped_refptr<storage::ExternalMountPoints> mount_points,
     storage::ExternalMountPoints* system_mount_points)
     : file_access_permissions_(new FileAccessPermissions()),
@@ skipping 30 matching lines @@
 
 bool FileSystemBackend::CanHandleType(storage::FileSystemType type) const {
   switch (type) {
     case storage::kFileSystemTypeExternal:
     case storage::kFileSystemTypeDrive:
     case storage::kFileSystemTypeRestrictedNativeLocal:
     case storage::kFileSystemTypeNativeLocal:
     case storage::kFileSystemTypeNativeForPlatformApp:
     case storage::kFileSystemTypeDeviceMediaAsFileStorage:
     case storage::kFileSystemTypeProvided:
+    case storage::kFileSystemTypePluginProvided:
       return true;
     default:
       return false;
   }
 }
 
 void FileSystemBackend::Initialize(storage::FileSystemContext* context) {
 }
 
 void FileSystemBackend::ResolveURL(const storage::FileSystemURL& url,
@@ skipping 124 matching lines @@
     root_dirs.push_back(mount_points[i].path);
   return root_dirs;
 }
 
 storage::AsyncFileUtil* FileSystemBackend::GetAsyncFileUtil(
     storage::FileSystemType type) {
   switch (type) {
     case storage::kFileSystemTypeDrive:
       return drive_delegate_->GetAsyncFileUtil(type);
     case storage::kFileSystemTypeProvided:
+    case storage::kFileSystemTypePluginProvided:
       return file_system_provider_delegate_->GetAsyncFileUtil(type);
     case storage::kFileSystemTypeNativeLocal:
     case storage::kFileSystemTypeRestrictedNativeLocal:
       return local_file_util_.get();
     case storage::kFileSystemTypeDeviceMediaAsFileStorage:
       return mtp_delegate_->GetAsyncFileUtil(type);
     default:
       NOTREACHED();
   }
   return NULL;
 }
 
 storage::WatcherManager* FileSystemBackend::GetWatcherManager(
     storage::FileSystemType type) {
-  if (type == storage::kFileSystemTypeProvided)
+  if (type == storage::kFileSystemTypeProvided ||
+      type == storage::kFileSystemTypePluginProvided)
     return file_system_provider_delegate_->GetWatcherManager(type);
 
   if (type == storage::kFileSystemTypeDeviceMediaAsFileStorage &&
       !base::CommandLine::ForCurrentProcess()->HasSwitch(
           chromeos::switches::kDisableMtpWriteSupport)) {
     return mtp_delegate_->GetWatcherManager(type);
   }
 
   // TODO(mtomasz): Add support for other backends.
   return NULL;
@@ skipping 24 matching lines @@
     return storage::FileSystemOperation::Create(
         url,
         context,
         make_scoped_ptr(new storage::FileSystemOperationContext(
             context, MediaFileSystemBackend::MediaTaskRunner().get())));
   }
 
   DCHECK(url.type() == storage::kFileSystemTypeNativeLocal ||
          url.type() == storage::kFileSystemTypeRestrictedNativeLocal ||
          url.type() == storage::kFileSystemTypeDrive ||
-         url.type() == storage::kFileSystemTypeProvided);
+         url.type() == storage::kFileSystemTypeProvided ||
+         url.type() == storage::kFileSystemTypePluginProvided);
   return storage::FileSystemOperation::Create(
       url,
       context,
       make_scoped_ptr(new storage::FileSystemOperationContext(context)));
 }
 
 bool FileSystemBackend::SupportsStreaming(
     const storage::FileSystemURL& url) const {
   return url.type() == storage::kFileSystemTypeDrive ||
          url.type() == storage::kFileSystemTypeProvided ||
+         url.type() == storage::kFileSystemTypePluginProvided ||
          url.type() == storage::kFileSystemTypeDeviceMediaAsFileStorage;
 }
 
 bool FileSystemBackend::HasInplaceCopyImplementation(
     storage::FileSystemType type) const {
   switch (type) {
     case storage::kFileSystemTypeDrive:
     case storage::kFileSystemTypeProvided:
+    case storage::kFileSystemTypePluginProvided:
     case storage::kFileSystemTypeDeviceMediaAsFileStorage:
       return true;
     case storage::kFileSystemTypeNativeLocal:
     case storage::kFileSystemTypeRestrictedNativeLocal:
       return false;
     default:
       NOTREACHED();
   }
   return true;
 }
 
 scoped_ptr<storage::FileStreamReader> FileSystemBackend::CreateFileStreamReader(
     const storage::FileSystemURL& url,
     int64 offset,
     int64 max_bytes_to_read,
     const base::Time& expected_modification_time,
     storage::FileSystemContext* context) const {
   DCHECK(url.is_valid());
 
   if (!IsAccessAllowed(url))
     return scoped_ptr<storage::FileStreamReader>();
 
   switch (url.type()) {
     case storage::kFileSystemTypeDrive:
       return drive_delegate_->CreateFileStreamReader(
           url, offset, max_bytes_to_read, expected_modification_time, context);
     case storage::kFileSystemTypeProvided:
+    case storage::kFileSystemTypePluginProvided:
       return file_system_provider_delegate_->CreateFileStreamReader(
           url, offset, max_bytes_to_read, expected_modification_time, context);
     case storage::kFileSystemTypeNativeLocal:
     case storage::kFileSystemTypeRestrictedNativeLocal:
       return scoped_ptr<storage::FileStreamReader>(
           storage::FileStreamReader::CreateForFileSystemFile(
               context, url, offset, expected_modification_time));
     case storage::kFileSystemTypeDeviceMediaAsFileStorage:
       return mtp_delegate_->CreateFileStreamReader(
           url, offset, max_bytes_to_read, expected_modification_time, context);
     default:
       NOTREACHED();
   }
   return scoped_ptr<storage::FileStreamReader>();
 }
 
 scoped_ptr<storage::FileStreamWriter> FileSystemBackend::CreateFileStreamWriter(
     const storage::FileSystemURL& url,
     int64 offset,
     storage::FileSystemContext* context) const {
   DCHECK(url.is_valid());
 
   if (!IsAccessAllowed(url))
     return scoped_ptr<storage::FileStreamWriter>();
 
   switch (url.type()) {
     case storage::kFileSystemTypeDrive:
       return drive_delegate_->CreateFileStreamWriter(url, offset, context);
     case storage::kFileSystemTypeProvided:
+    case storage::kFileSystemTypePluginProvided:
       return file_system_provider_delegate_->CreateFileStreamWriter(
           url, offset, context);
     case storage::kFileSystemTypeNativeLocal:
       return scoped_ptr<storage::FileStreamWriter>(
           storage::FileStreamWriter::CreateForLocalFile(
               context->default_file_task_runner(),
               url.path(),
               offset,
               storage::FileStreamWriter::OPEN_EXISTING_FILE));
     case storage::kFileSystemTypeRestrictedNativeLocal:
@@ skipping 19 matching lines @@
   DCHECK(url.is_valid());
 
   if (!IsAccessAllowed(url))
     return callback.Run(GURL());
 
   switch (url.type()) {
     case storage::kFileSystemTypeDrive:
       drive_delegate_->GetRedirectURLForContents(url, callback);
       return;
     case storage::kFileSystemTypeProvided:
+    case storage::kFileSystemTypePluginProvided:
       file_system_provider_delegate_->GetRedirectURLForContents(url,
                                                                   callback);
       return;
     case storage::kFileSystemTypeDeviceMediaAsFileStorage:
       mtp_delegate_->GetRedirectURLForContents(url, callback);
       return;
     case storage::kFileSystemTypeNativeLocal:
     case storage::kFileSystemTypeRestrictedNativeLocal:
       callback.Run(GURL());
       return;
     default:
       NOTREACHED();
   }
   callback.Run(GURL());
 }
 
 storage::FileSystemURL FileSystemBackend::CreateInternalURL(
     storage::FileSystemContext* context,
     const base::FilePath& entry_path) const {
   base::FilePath virtual_path;
   if (!GetVirtualPath(entry_path, &virtual_path))
     return storage::FileSystemURL();
 
   return context->CreateCrackedFileSystemURL(
       GURL() /* origin */, storage::kFileSystemTypeExternal, virtual_path);
 }
 
 }  // namespace chromeos