LCOV - code coverage report
Current view: top level - frmts/pcidsk/sdk/segment - cpcidskbinarysegment.cpp (source / functions) Hit Total Coverage
Test: gdal_filtered.info Lines: 0 38 0.0 %
Date: 2025-07-11 10:11:13 Functions: 0 9 0.0 %

          Line data    Source code
       1             : /******************************************************************************
       2             :  *
       3             :  * Purpose:  Implementation of the CPCIDSKBinarySegment class.
       4             :  *
       5             :  ******************************************************************************
       6             :  * Copyright (c) 2010
       7             :  * PCI Geomatics, 90 Allstate Parkway, Markham, Ontario, Canada.
       8             :  *
       9             :  * SPDX-License-Identifier: MIT
      10             :  ****************************************************************************/
      11             : 
      12             : #include "segment/cpcidskbinarysegment.h"
      13             : #include "segment/cpcidsksegment.h"
      14             : #include "core/pcidsk_utils.h"
      15             : #include "pcidsk_exception.h"
      16             : #include "core/pcidsk_utils.h"
      17             : 
      18             : #include <limits>
      19             : #include <vector>
      20             : #include <string>
      21             : #include <cassert>
      22             : #include <cstring>
      23             : 
      24             : using namespace PCIDSK;
      25             : 
      26             : PCIDSKBinarySegment::~PCIDSKBinarySegment() = default;
      27             : 
      28             : /**
      29             :  * Binary Segment constructor
      30             :  * @param[in,out] fileIn the PCIDSK file
      31             :  * @param[in] segmentIn the segment index
      32             :  * @param[in] segment_pointer the segment pointer
      33             :  * @param[in] bLoad true to load the segment, else false (default true)
      34             :  */
      35           0 : CPCIDSKBinarySegment::CPCIDSKBinarySegment(PCIDSKFile *fileIn,
      36             :                                            int segmentIn,
      37             :                                            const char *segment_pointer,
      38           0 :                                            bool bLoad) :
      39             :     CPCIDSKSegment(fileIn, segmentIn, segment_pointer),
      40           0 :     loaded_(false),mbModified(false)
      41             : {
      42           0 :     if (true == bLoad)
      43             :     {
      44           0 :         Load();
      45             :     }
      46           0 :     return;
      47             : }// Initializer constructor
      48             : 
      49             : 
      50           0 : CPCIDSKBinarySegment::~CPCIDSKBinarySegment()
      51             : {
      52           0 : }
      53             : 
      54             : /**
      55             :  * Load the contents of the segment
      56             :  */
      57           0 : void CPCIDSKBinarySegment::Load()
      58             : {
      59             :     // Check if we've already loaded the segment into memory
      60           0 :     if (loaded_) {
      61           0 :         return;
      62             :     }
      63             : 
      64           0 :     if( data_size < 1024 )
      65             :     {
      66           0 :         return ThrowPCIDSKException("Wrong data_size in CPCIDSKBinarySegment");
      67             :     }
      68             : 
      69           0 :     if( data_size - 1024 > static_cast<uint64_t>(std::numeric_limits<int>::max()) )
      70             :     {
      71           0 :         return ThrowPCIDSKException("too large data_size");
      72             :     }
      73             : 
      74           0 :     seg_data.SetSize((int)(data_size - 1024));
      75             : 
      76           0 :     ReadFromFile(seg_data.buffer, 0, data_size - 1024);
      77             : 
      78             :     // Mark it as being loaded properly.
      79           0 :     loaded_ = true;
      80             : }
      81             : 
      82             : /**
      83             :  * Write the segment on disk
      84             :  */
      85           0 : void CPCIDSKBinarySegment::Write(void)
      86             : {
      87             :     //We are not writing if nothing was loaded.
      88           0 :     if (!loaded_) {
      89           0 :         return;
      90             :     }
      91             : 
      92           0 :     WriteToFile(seg_data.buffer, 0, seg_data.buffer_size);
      93             : 
      94           0 :     mbModified = false;
      95             : }
      96             : 
      97             : /**
      98             :  * Synchronize the segment, if it was modified then
      99             :  * write it into disk.
     100             :  */
     101           0 : void CPCIDSKBinarySegment::Synchronize()
     102             : {
     103           0 :     if(mbModified)
     104             :     {
     105           0 :         this->Write();
     106             :     }
     107           0 : }
     108             : 
     109             : void
     110           0 : CPCIDSKBinarySegment::SetBuffer(const char* pabyBuf,
     111             :                                 unsigned int nBufSize)
     112             : {
     113             :     // Round the buffer size up to the next multiple of 512.
     114           0 :     int nNumBlocks = nBufSize / 512 + ((0 == nBufSize % 512) ? 0 : 1);
     115           0 :     unsigned int nAllocBufSize = 512 * nNumBlocks;
     116             : 
     117           0 :     seg_data.SetSize((int)nAllocBufSize);
     118           0 :     data_size = nAllocBufSize + 1024; // Incl. header
     119             : 
     120           0 :     memcpy(seg_data.buffer, pabyBuf, nBufSize);
     121             : 
     122             :     // Fill unused data at end with zeroes.
     123           0 :     if (nBufSize < nAllocBufSize)
     124             :     {
     125           0 :         memset(seg_data.buffer + nBufSize, 0,
     126           0 :             nAllocBufSize - nBufSize);
     127             :     }
     128           0 :     mbModified = true;
     129             : 
     130           0 :     return;
     131             : }// SetBuffer

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