chrome/browser/chromeos/file_system_provider/operations/read_directory.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chromeos/file_system_provider/operations/read_directory.h"
   6
   7 #include <string>
   8
   9 #include "base/memory/linked_ptr.h"
  10 #include "chrome/browser/chromeos/file_system_provider/operations/get_metadata.h"
  11 #include "chrome/common/extensions/api/file_system_provider.h"
  12 #include "chrome/common/extensions/api/file_system_provider_internal.h"
  13
  14 namespace chromeos {
  15 namespace file_system_provider {
  16 namespace operations {
  17 namespace {
  18
  19 // Convert |input| into |output|. If parsing fails, then returns false.
  20 bool ConvertRequestValueToEntryList(scoped_ptr<RequestValue> value,
  21                                     storage::AsyncFileUtil::EntryList* output) {
  22   using extensions::api::file_system_provider::EntryMetadata;
  23   using extensions::api::file_system_provider_internal::
  24       ReadDirectoryRequestedSuccess::Params;
  25
  26   const Params* params = value->read_directory_success_params();
  27   if (!params)
  28     return false;
  29
  30   for (size_t i = 0; i < params->entries.size(); ++i) {
  31     const linked_ptr<EntryMetadata> entry_metadata = params->entries[i];
  32     if (!ValidateIDLEntryMetadata(*entry_metadata, false /* root_entry */))
  33       return false;
  34
  35     storage::DirectoryEntry output_entry;
  36     output_entry.is_directory = entry_metadata->is_directory;
  37     output_entry.name = entry_metadata->name;
  38     output_entry.size = static_cast<int64>(entry_metadata->size);
  39
  40     std::string input_modification_time;
  41     if (!entry_metadata->modification_time.additional_properties.GetString(
  42             "value", &input_modification_time)) {
  43       NOTREACHED();
  44     }
  45     if (!base::Time::FromString(input_modification_time.c_str(),
  46                                 &output_entry.last_modified_time)) {
  47       NOTREACHED();
  48     }
  49
  50     output->push_back(output_entry);
  51   }
  52
  53   return true;
  54 }
  55
  56 }  // namespace
  57
  58 ReadDirectory::ReadDirectory(
  59     extensions::EventRouter* event_router,
  60     const ProvidedFileSystemInfo& file_system_info,
  61     const base::FilePath& directory_path,
  62     const storage::AsyncFileUtil::ReadDirectoryCallback& callback)
  63     : Operation(event_router, file_system_info),
  64       directory_path_(directory_path),
  65       callback_(callback) {
  66 }
  67
  68 ReadDirectory::~ReadDirectory() {
  69 }
  70
  71 bool ReadDirectory::Execute(int request_id) {
  72   using extensions::api::file_system_provider::ReadDirectoryRequestedOptions;
  73
  74   ReadDirectoryRequestedOptions options;
  75   options.file_system_id = file_system_info_.file_system_id();
  76   options.request_id = request_id;
  77   options.directory_path = directory_path_.AsUTF8Unsafe();
  78
  79   return SendEvent(
  80       request_id,
  81       extensions::api::file_system_provider::OnReadDirectoryRequested::
  82           kEventName,
  83       extensions::api::file_system_provider::OnReadDirectoryRequested::Create(
  84           options));
  85 }
  86
  87 void ReadDirectory::OnSuccess(int /* request_id */,
  88                               scoped_ptr<RequestValue> result,
  89                               bool has_more) {
  90   storage::AsyncFileUtil::EntryList entry_list;
  91   const bool convert_result =
  92       ConvertRequestValueToEntryList(result.Pass(), &entry_list);
  93
  94   if (!convert_result) {
  95     LOG(ERROR)
  96         << "Failed to parse a response for the read directory operation.";
  97     callback_.Run(base::File::FILE_ERROR_IO,
  98                   storage::AsyncFileUtil::EntryList(),
  99                   false /* has_more */);
 100     return;
 101   }
 102
 103   callback_.Run(base::File::FILE_OK, entry_list, has_more);
 104 }
 105
 106 void ReadDirectory::OnError(int /* request_id */,
 107                             scoped_ptr<RequestValue> /* result */,
 108                             base::File::Error error) {
 109   callback_.Run(
 110       error, storage::AsyncFileUtil::EntryList(), false /* has_more */);
 111 }
 112
 113 }  // namespace operations
 114 }  // namespace file_system_provider
 115 }  // namespace chromeos