ppapi/cpp/file_system.cc

   1 // Copyright (c) 2012 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 "ppapi/cpp/file_system.h"
   6
   7 #include "ppapi/c/pp_errors.h"
   8 #include "ppapi/c/ppb_file_system.h"
   9 #include "ppapi/cpp/completion_callback.h"
  10 #include "ppapi/cpp/file_ref.h"
  11 #include "ppapi/cpp/instance_handle.h"
  12 #include "ppapi/cpp/logging.h"
  13 #include "ppapi/cpp/module.h"
  14 #include "ppapi/cpp/module_impl.h"
  15
  16 namespace pp {
  17
  18 namespace {
  19
  20 template <> const char* interface_name<PPB_FileSystem_1_0>() {
  21   return PPB_FILESYSTEM_INTERFACE_1_0;
  22 }
  23
  24 }  // namespace
  25
  26 FileSystem::FileSystem() {
  27 }
  28
  29 FileSystem::FileSystem(const FileSystem& other) : Resource(other) {
  30 }
  31
  32 FileSystem::FileSystem(const Resource& resource) : Resource(resource) {
  33   if (!IsFileSystem(resource)) {
  34     PP_NOTREACHED();
  35
  36     // On release builds, set this to null.
  37     Clear();
  38   }
  39 }
  40
  41 FileSystem::FileSystem(PassRef, PP_Resource resource)
  42     : Resource(PASS_REF, resource) {
  43 }
  44
  45 FileSystem::FileSystem(const InstanceHandle& instance,
  46                        PP_FileSystemType type) {
  47   if (!has_interface<PPB_FileSystem_1_0>())
  48     return;
  49   PassRefFromConstructor(get_interface<PPB_FileSystem_1_0>()->Create(
  50       instance.pp_instance(), type));
  51 }
  52
  53 int32_t FileSystem::Open(int64_t expected_size,
  54                          const CompletionCallback& cc) {
  55   if (!has_interface<PPB_FileSystem_1_0>())
  56     return cc.MayForce(PP_ERROR_NOINTERFACE);
  57   return get_interface<PPB_FileSystem_1_0>()->Open(
  58       pp_resource(), expected_size, cc.pp_completion_callback());
  59 }
  60
  61 // static
  62 bool FileSystem::IsFileSystem(const Resource& resource) {
  63   if (!has_interface<PPB_FileSystem_1_0>())
  64     return false;
  65   return get_interface<PPB_FileSystem_1_0>()->IsFileSystem(
  66       resource.pp_resource()) == PP_TRUE;
  67 }
  68
  69 }  // namespace pp