Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  Arrow generic code
       4             :  * Purpose:  Arrow generic code
       5             :  * Author:   Even Rouault, <even.rouault at spatialys.com>
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2022, Planet Labs
       9             :  *
      10             :  * Permission is hereby granted, free of charge, to any person obtaining a
      11             :  * copy of this software and associated documentation files (the "Software"),
      12             :  * to deal in the Software without restriction, including without limitation
      13             :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      14             :  * and/or sell copies of the Software, and to permit persons to whom the
      15             :  * Software is furnished to do so, subject to the following conditions:
      16             :  *
      17             :  * The above copyright notice and this permission notice shall be included
      18             :  * in all copies or substantial portions of the Software.
      19             :  *
      20             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      21             :  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      22             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      23             :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      24             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      25             :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      26             :  * DEALINGS IN THE SOFTWARE.
      27             :  ****************************************************************************/
      28             : 
      29             : #ifndef OGR_ARROW_WRITABLE_FILE_H
      30             : #define OGR_ARROW_WRITABLE_FILE_H
      31             : 
      32             : #include "cpl_vsi.h"
      33             : 
      34             : #include "arrow/buffer.h"
      35             : #include "arrow/io/file.h"
      36             : #include "arrow/io/interfaces.h"
      37             : 
      38             : /************************************************************************/
      39             : /*                        OGRArrowWritableFile                          */
      40             : /************************************************************************/
      41             : 
      42             : class OGRArrowWritableFile final : public arrow::io::OutputStream
      43             : {
      44             :     VSILFILE *m_fp;
      45             : 
      46             :     OGRArrowWritableFile(const OGRArrowWritableFile &) = delete;
      47             :     OGRArrowWritableFile &operator=(const OGRArrowWritableFile &) = delete;
      48             : 
      49             :   public:
      50         336 :     explicit OGRArrowWritableFile(VSILFILE *fp) : m_fp(fp)
      51             :     {
      52         336 :     }
      53             : 
      54         336 :     ~OGRArrowWritableFile() override
      55         336 :     {
      56         336 :         if (m_fp)
      57         336 :             VSIFCloseL(m_fp);
      58         336 :     }
      59             : 
      60           0 :     arrow::Status Close() override
      61             :     {
      62           0 :         int ret = VSIFCloseL(m_fp);
      63           0 :         m_fp = nullptr;
      64             :         return ret == 0 ? arrow::Status::OK()
      65           0 :                         : arrow::Status::IOError("Error while closing");
      66             :     }
      67             : 
      68        4624 :     arrow::Result<int64_t> Tell() const override
      69             :     {
      70        4624 :         return static_cast<int64_t>(VSIFTellL(m_fp));
      71             :     }
      72             : 
      73           0 :     bool closed() const override
      74             :     {
      75           0 :         return m_fp == nullptr;
      76             :     }
      77             : 
      78       16524 :     arrow::Status Write(const void *data, int64_t nbytes) override
      79             :     {
      80             :         CPLAssert(static_cast<int64_t>(static_cast<size_t>(nbytes)) == nbytes);
      81       16524 :         if (VSIFWriteL(data, 1, static_cast<size_t>(nbytes), m_fp) ==
      82       16524 :             static_cast<size_t>(nbytes))
      83       16524 :             return arrow::Status::OK();
      84           0 :         return arrow::Status::IOError("Error while writing");
      85             :     }
      86             : 
      87        4493 :     arrow::Status Write(const std::shared_ptr<arrow::Buffer> &data) override
      88             :     {
      89        4493 :         return Write(data->data(), data->size());
      90             :     }
      91             : };
      92             : 
      93             : #endif  // OGR_ARROW_WRITABLE_FILE_H