mojo/common/data_pipe_utils.h

   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 #ifndef MOJO_SHELL_DATA_PIPE_UTILS_H_
   6 #define MOJO_SHELL_DATA_PIPE_UTILS_H_
   7
   8 #include <string>
   9
  10 #include "base/callback_forward.h"
  11 #include "mojo/common/mojo_common_export.h"
  12 #include "third_party/mojo/src/mojo/public/cpp/system/core.h"
  13
  14 namespace base {
  15 class FilePath;
  16 class TaskRunner;
  17 }
  18
  19 namespace mojo {
  20 namespace common {
  21
  22 // Asynchronously copies data from source to the destination file. The given
  23 // |callback| is run upon completion. File writes will be scheduled to the
  24 // given |task_runner|.
  25 void MOJO_COMMON_EXPORT CopyToFile(
  26     ScopedDataPipeConsumerHandle source,
  27     const base::FilePath& destination,
  28     base::TaskRunner* task_runner,
  29     const base::Callback<void(bool /*success*/)>& callback);
  30
  31 void MOJO_COMMON_EXPORT
  32 CopyFromFile(const base::FilePath& source,
  33              ScopedDataPipeProducerHandle destination,
  34              uint32_t skip,
  35              base::TaskRunner* task_runner,
  36              const base::Callback<void(bool /*success*/)>& callback);
  37
  38 // Copies the data from |source| into |contents| and returns true on success and
  39 // false on error.  In case of I/O error, |contents| holds the data that could
  40 // be read from source before the error occurred.
  41 bool MOJO_COMMON_EXPORT BlockingCopyToString(
  42     ScopedDataPipeConsumerHandle source,
  43     std::string* contents);
  44
  45 bool MOJO_COMMON_EXPORT BlockingCopyFromString(
  46     const std::string& source,
  47     const ScopedDataPipeProducerHandle& destination);
  48
  49 // Synchronously copies data from source to the destination file returning true
  50 // on success and false on error.  In case of an error, |destination| holds the
  51 // data that could be read from the source before the error occured.
  52 bool MOJO_COMMON_EXPORT BlockingCopyToFile(ScopedDataPipeConsumerHandle source,
  53                                            const base::FilePath& destination);
  54
  55 }  // namespace common
  56 }  // namespace mojo
  57
  58 #endif  // MOJO_SHELL_DATA_PIPE_UTILS_H_