ppapi/cpp/trusted/file_io_trusted.cc

   1 // Copyright (c) 2011 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/trusted/file_io_trusted.h"
   6
   7 #include "ppapi/c/pp_errors.h"
   8 #include "ppapi/c/trusted/ppb_file_io_trusted.h"
   9 #include "ppapi/cpp/completion_callback.h"
  10 #include "ppapi/cpp/file_io.h"
  11 #include "ppapi/cpp/module_impl.h"
  12
  13 namespace pp {
  14
  15 namespace {
  16
  17 template <> const char* interface_name<PPB_FileIOTrusted>() {
  18   return PPB_FILEIOTRUSTED_INTERFACE_0_4;
  19 }
  20
  21 }  // namespace
  22
  23 FileIO_Trusted::FileIO_Trusted() {
  24 }
  25
  26 int32_t FileIO_Trusted::GetOSFileDescriptor(const FileIO& file_io) {
  27   const int32_t kInvalidOSFileDescriptor = -1;
  28   if (!has_interface<PPB_FileIOTrusted>())
  29     return kInvalidOSFileDescriptor;
  30   return get_interface<PPB_FileIOTrusted>()->GetOSFileDescriptor(
  31       file_io.pp_resource());
  32 }
  33
  34 int32_t FileIO_Trusted::WillWrite(const FileIO& file_io,
  35                                   int64_t offset,
  36                                   int32_t bytes_to_write,
  37                                   const CompletionCallback& callback) {
  38   if (!has_interface<PPB_FileIOTrusted>())
  39     return callback.MayForce(PP_ERROR_NOINTERFACE);
  40   return get_interface<PPB_FileIOTrusted>()->WillWrite(
  41       file_io.pp_resource(), offset, bytes_to_write,
  42       callback.pp_completion_callback());
  43 }
  44
  45 int32_t FileIO_Trusted::WillSetLength(const FileIO& file_io,
  46                                       int64_t length,
  47                                       const CompletionCallback& callback) {
  48   if (!has_interface<PPB_FileIOTrusted>())
  49     return callback.MayForce(PP_ERROR_NOINTERFACE);
  50   return get_interface<PPB_FileIOTrusted>()->WillSetLength(
  51       file_io.pp_resource(), length, callback.pp_completion_callback());
  52 }
  53
  54 }  // namespace pp