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      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 <stdint.h>
      9 
     10 #include <string>
     11 
     12 #include "base/callback_forward.h"
     13 #include "mojo/common/mojo_common_export.h"
     14 #include "mojo/public/cpp/system/core.h"
     15 
     16 namespace base {
     17 class FilePath;
     18 class TaskRunner;
     19 }
     20 
     21 namespace mojo {
     22 namespace common {
     23 
     24 // Asynchronously copies data from source to the destination file. The given
     25 // |callback| is run upon completion. File writes will be scheduled to the
     26 // given |task_runner|.
     27 void MOJO_COMMON_EXPORT CopyToFile(
     28     ScopedDataPipeConsumerHandle source,
     29     const base::FilePath& destination,
     30     base::TaskRunner* task_runner,
     31     const base::Callback<void(bool /*success*/)>& callback);
     32 
     33 void MOJO_COMMON_EXPORT
     34 CopyFromFile(const base::FilePath& source,
     35              ScopedDataPipeProducerHandle destination,
     36              uint32_t skip,
     37              base::TaskRunner* task_runner,
     38              const base::Callback<void(bool /*success*/)>& callback);
     39 
     40 // Copies the data from |source| into |contents| and returns true on success and
     41 // false on error.  In case of I/O error, |contents| holds the data that could
     42 // be read from source before the error occurred.
     43 bool MOJO_COMMON_EXPORT BlockingCopyToString(
     44     ScopedDataPipeConsumerHandle source,
     45     std::string* contents);
     46 
     47 bool MOJO_COMMON_EXPORT BlockingCopyFromString(
     48     const std::string& source,
     49     const ScopedDataPipeProducerHandle& destination);
     50 
     51 // Synchronously copies data from source to the destination file returning true
     52 // on success and false on error.  In case of an error, |destination| holds the
     53 // data that could be read from the source before the error occured.
     54 bool MOJO_COMMON_EXPORT BlockingCopyToFile(ScopedDataPipeConsumerHandle source,
     55                                            const base::FilePath& destination);
     56 
     57 }  // namespace common
     58 }  // namespace mojo
     59 
     60 #endif  // MOJO_SHELL_DATA_PIPE_UTILS_H_
     61