Line data    Source code

       1             : /*
       2             : Copyright 2016-2017 Esri
       3             : Licensed under the Apache License, Version 2.0 (the "License");
       4             : you may not use this file except in compliance with the License.
       5             : You may obtain a copy of the License at
       6             : http://www.apache.org/licenses/LICENSE-2.0
       7             : Unless required by applicable law or agreed to in writing, software
       8             : distributed under the License is distributed on an "AS IS" BASIS,
       9             : WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      10             : See the License for the specific language governing permissions and
      11             : limitations under the License.
      12             : 
      13             : Contributors:  Lucian Plesea
      14             : */
      15             : 
      16             : #if !defined(PACKER_H)
      17             : #define PACKER_H
      18             : #include <cstring>
      19             : #include "marfa.h"
      20             : 
      21             : NAMESPACE_MRF_START
      22             : 
      23             : typedef struct storage_manager
      24             : {
      25             :     char *buffer;
      26             :     size_t size;
      27             : } storage_manager;
      28             : 
      29             : // A base class that provides import and export functions based on storage
      30             : // managers Default implementation is a straight copy
      31          20 : class Packer
      32             : {
      33             :   public:
      34             :     virtual ~Packer();
      35             : 
      36           0 :     virtual int load(storage_manager *src, storage_manager *dst)
      37             :     {
      38           0 :         if (dst->size < src->size)
      39           0 :             return false;
      40           0 :         std::memcpy(dst->buffer, src->buffer, src->size);
      41           0 :         dst->size -= src->size;  // Adjust the destination size
      42           0 :         return true;
      43             :     }
      44             : 
      45           0 :     virtual int store(storage_manager *src, storage_manager *dst)
      46             :     {
      47           0 :         return load(src, dst);
      48             :     }
      49             : };
      50             : 
      51             : NAMESPACE_MRF_END
      52             : #endif