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