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hfadataset.cpp
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/******************************************************************************
*
* Name: hfadataset.cpp
* Project: Erdas Imagine Driver
* Purpose: Main driver for Erdas Imagine format.
* Author: Frank Warmerdam, [email protected]
*
******************************************************************************
* Copyright (c) 1999, Frank Warmerdam
* Copyright (c) 2008-2013, Even Rouault <even dot rouault at spatialys.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "cpl_port.h"
#include "hfadataset.h"
#include "hfa_p.h"
#include <cassert>
#include <climits>
#include <cmath>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#if HAVE_FCNTL_H
# include <fcntl.h>
#endif
#include <algorithm>
#include <memory>
#include <string>
#include <vector>
#include "cpl_conv.h"
#include "cpl_error.h"
#include "cpl_minixml.h"
#include "cpl_progress.h"
#include "cpl_string.h"
#include "cpl_vsi.h"
#include "gdal.h"
#include "gdal_frmts.h"
#include "gdal_pam.h"
#include "gdal_priv.h"
#include "gdal_rat.h"
#include "hfa.h"
#include "ogr_core.h"
#include "ogr_spatialref.h"
#include "ogr_srs_api.h"
CPL_CVSID("$Id$")
constexpr double D2R = M_PI / 180.0;
constexpr double ARCSEC2RAD = M_PI / 648000.0;
int WritePeStringIfNeeded( const OGRSpatialReference *poSRS, HFAHandle hHFA );
void ClearSR( HFAHandle hHFA );
/************************************************************************/
/* HFARasterAttributeTable() */
/************************************************************************/
HFARasterAttributeTable::HFARasterAttributeTable(
HFARasterBand *poBand, const char *pszName) :
hHFA(poBand->hHFA),
poDT(poBand->hHFA->papoBand[poBand->nBand-1]->
poNode->GetNamedChild(pszName)),
osName(pszName),
nBand(poBand->nBand),
eAccess(poBand->GetAccess()),
nRows(0),
bLinearBinning(false),
dfRow0Min(0.0),
dfBinSize(0.0),
eTableType(GRTT_THEMATIC)
{
if( poDT != nullptr )
{
nRows = poDT->GetIntField("numRows");
// Scan under table for columns.
for( HFAEntry *poDTChild = poDT->GetChild();
poDTChild != nullptr;
poDTChild = poDTChild->GetNext() )
{
if( EQUAL(poDTChild->GetType(), "Edsc_BinFunction") )
{
const double dfMax = poDTChild->GetDoubleField("maxLimit");
const double dfMin = poDTChild->GetDoubleField("minLimit");
const int nBinCount = poDTChild->GetIntField("numBins");
if( nBinCount == nRows && dfMax != dfMin && nBinCount > 1 )
{
// Can't call SetLinearBinning since it will re-write
// which we might not have permission to do.
bLinearBinning = true;
dfRow0Min = dfMin;
dfBinSize = (dfMax - dfMin) / (nBinCount - 1);
}
}
if( EQUAL(poDTChild->GetType(), "Edsc_BinFunction840") )
{
const char *pszValue =
poDTChild->GetStringField("binFunction.type.string");
if( pszValue && EQUAL(pszValue, "BFUnique") )
{
AddColumn("BinValues", GFT_Real, GFU_MinMax, 0, 0,
poDTChild, true);
}
}
if( !EQUAL(poDTChild->GetType(), "Edsc_Column") )
continue;
const int nOffset = poDTChild->GetIntField("columnDataPtr");
const char *pszType = poDTChild->GetStringField("dataType");
GDALRATFieldUsage eUsage = GFU_Generic;
bool bConvertColors = false;
if( pszType == nullptr || nOffset == 0 )
continue;
GDALRATFieldType eType;
if( EQUAL(pszType, "real") )
eType = GFT_Real;
else if( EQUAL(pszType, "string") )
eType = GFT_String;
else if( STARTS_WITH_CI(pszType, "int") )
eType = GFT_Integer;
else
continue;
if( EQUAL(poDTChild->GetName(), "Histogram") )
eUsage = GFU_PixelCount;
else if( EQUAL(poDTChild->GetName(), "Red") )
{
eUsage = GFU_Red;
// Treat color columns as ints regardless
// of how they are stored.
bConvertColors = eType == GFT_Real;
eType = GFT_Integer;
}
else if( EQUAL(poDTChild->GetName(), "Green") )
{
eUsage = GFU_Green;
bConvertColors = eType == GFT_Real;
eType = GFT_Integer;
}
else if( EQUAL(poDTChild->GetName(), "Blue") )
{
eUsage = GFU_Blue;
bConvertColors = eType == GFT_Real;
eType = GFT_Integer;
}
else if( EQUAL(poDTChild->GetName(), "Opacity") )
{
eUsage = GFU_Alpha;
bConvertColors = eType == GFT_Real;
eType = GFT_Integer;
}
else if( EQUAL(poDTChild->GetName(), "Class_Names") )
eUsage = GFU_Name;
if( eType == GFT_Real )
{
AddColumn(poDTChild->GetName(), GFT_Real, eUsage,
nOffset, sizeof(double), poDTChild);
}
else if( eType == GFT_String )
{
int nMaxNumChars = poDTChild->GetIntField("maxNumChars");
if( nMaxNumChars <= 0 )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Invalid nMaxNumChars = %d for column %s",
nMaxNumChars, poDTChild->GetName());
nMaxNumChars = 1;
}
AddColumn(poDTChild->GetName(), GFT_String, eUsage,
nOffset, nMaxNumChars, poDTChild);
}
else if( eType == GFT_Integer )
{
int nSize = sizeof(GInt32);
if( bConvertColors )
nSize = sizeof(double);
AddColumn(poDTChild->GetName(), GFT_Integer,
eUsage, nOffset, nSize, poDTChild,
false, bConvertColors);
}
}
}
}
/************************************************************************/
/* ~HFARasterAttributeTable() */
/************************************************************************/
HFARasterAttributeTable::~HFARasterAttributeTable() {}
/************************************************************************/
/* Clone() */
/************************************************************************/
GDALRasterAttributeTable *HFARasterAttributeTable::Clone() const
{
if( (GetRowCount() * GetColumnCount()) > RAT_MAX_ELEM_FOR_CLONE )
return nullptr;
GDALDefaultRasterAttributeTable *poRAT =
new GDALDefaultRasterAttributeTable();
for( int iCol = 0; iCol < static_cast<int>(aoFields.size()); iCol++)
{
poRAT->CreateColumn(aoFields[iCol].sName, aoFields[iCol].eType,
aoFields[iCol].eUsage);
poRAT->SetRowCount(nRows);
if( aoFields[iCol].eType == GFT_Integer )
{
int *panColData =
static_cast<int *>(VSI_MALLOC2_VERBOSE(sizeof(int), nRows));
if( panColData == nullptr )
{
delete poRAT;
return nullptr;
}
if( ((GDALDefaultRasterAttributeTable *)this)
->ValuesIO(GF_Read, iCol, 0, nRows, panColData) != CE_None )
{
CPLFree(panColData);
delete poRAT;
return nullptr;
}
for( int iRow = 0; iRow < nRows; iRow++ )
{
poRAT->SetValue(iRow, iCol, panColData[iRow]);
}
CPLFree(panColData);
}
if( aoFields[iCol].eType == GFT_Real )
{
double *padfColData = static_cast<double *>(
VSI_MALLOC2_VERBOSE(sizeof(double), nRows));
if( padfColData == nullptr )
{
delete poRAT;
return nullptr;
}
if( ((GDALDefaultRasterAttributeTable *)this)
->ValuesIO(GF_Read, iCol, 0, nRows, padfColData) != CE_None )
{
CPLFree(padfColData);
delete poRAT;
return nullptr;
}
for( int iRow = 0; iRow < nRows; iRow++ )
{
poRAT->SetValue(iRow, iCol, padfColData[iRow]);
}
CPLFree(padfColData);
}
if( aoFields[iCol].eType == GFT_String )
{
char **papszColData = static_cast<char **>(
VSI_MALLOC2_VERBOSE(sizeof(char *), nRows));
if( papszColData == nullptr )
{
delete poRAT;
return nullptr;
}
if( ((GDALDefaultRasterAttributeTable *)this)
->ValuesIO(GF_Read, iCol, 0, nRows, papszColData) != CE_None )
{
CPLFree(papszColData);
delete poRAT;
return nullptr;
}
for( int iRow = 0; iRow < nRows; iRow++ )
{
poRAT->SetValue(iRow, iCol, papszColData[iRow]);
CPLFree(papszColData[iRow]);
}
CPLFree(papszColData);
}
}
if( bLinearBinning )
poRAT->SetLinearBinning(dfRow0Min, dfBinSize);
poRAT->SetTableType(this->GetTableType());
return poRAT;
}
/************************************************************************/
/* GetColumnCount() */
/************************************************************************/
int HFARasterAttributeTable::GetColumnCount() const
{
return static_cast<int>(aoFields.size());
}
/************************************************************************/
/* GetNameOfCol() */
/************************************************************************/
const char *HFARasterAttributeTable::GetNameOfCol( int nCol ) const
{
if( nCol < 0 || nCol >= static_cast<int>(aoFields.size()) )
return nullptr;
return aoFields[nCol].sName;
}
/************************************************************************/
/* GetUsageOfCol() */
/************************************************************************/
GDALRATFieldUsage HFARasterAttributeTable::GetUsageOfCol( int nCol ) const
{
if( nCol < 0 || nCol >= static_cast<int>(aoFields.size()) )
return GFU_Generic;
return aoFields[nCol].eUsage;
}
/************************************************************************/
/* GetTypeOfCol() */
/************************************************************************/
GDALRATFieldType HFARasterAttributeTable::GetTypeOfCol( int nCol ) const
{
if( nCol < 0 || nCol >= static_cast<int>(aoFields.size()) )
return GFT_Integer;
return aoFields[nCol].eType;
}
/************************************************************************/
/* GetColOfUsage() */
/************************************************************************/
int HFARasterAttributeTable::GetColOfUsage( GDALRATFieldUsage eUsage ) const
{
for( unsigned int i = 0; i < aoFields.size(); i++ )
{
if( aoFields[i].eUsage == eUsage )
return i;
}
return -1;
}
/************************************************************************/
/* GetRowCount() */
/************************************************************************/
int HFARasterAttributeTable::GetRowCount() const { return nRows; }
/************************************************************************/
/* GetValueAsString() */
/************************************************************************/
const char *HFARasterAttributeTable::GetValueAsString( int iRow,
int iField ) const
{
// Get ValuesIO do do the work.
char *apszStrList[1] = { nullptr };
if( ((HFARasterAttributeTable *)this)
->ValuesIO(GF_Read, iField, iRow, 1, apszStrList) != CE_None )
{
return "";
}
((HFARasterAttributeTable *)this)->osWorkingResult = apszStrList[0];
CPLFree(apszStrList[0]);
return osWorkingResult;
}
/************************************************************************/
/* GetValueAsInt() */
/************************************************************************/
int HFARasterAttributeTable::GetValueAsInt( int iRow, int iField ) const
{
// Get ValuesIO do do the work.
int nValue = 0;
if( ((HFARasterAttributeTable *)this)
->ValuesIO(GF_Read, iField, iRow, 1, &nValue) != CE_None )
{
return 0;
}
return nValue;
}
/************************************************************************/
/* GetValueAsDouble() */
/************************************************************************/
double HFARasterAttributeTable::GetValueAsDouble( int iRow, int iField ) const
{
// Get ValuesIO do do the work.
double dfValue = 0.0;
if( ((HFARasterAttributeTable *)this)
->ValuesIO(GF_Read, iField, iRow, 1, &dfValue) != CE_None )
{
return 0.0;
}
return dfValue;
}
/************************************************************************/
/* SetValue() */
/************************************************************************/
void HFARasterAttributeTable::SetValue( int iRow, int iField,
const char *pszValue )
{
// Get ValuesIO do do the work.
ValuesIO(GF_Write, iField, iRow, 1, (char **)&pszValue);
}
/************************************************************************/
/* SetValue() */
/************************************************************************/
void HFARasterAttributeTable::SetValue( int iRow, int iField, double dfValue )
{
// Get ValuesIO do do the work.
ValuesIO(GF_Write, iField, iRow, 1, &dfValue);
}
/************************************************************************/
/* SetValue() */
/************************************************************************/
void HFARasterAttributeTable::SetValue( int iRow, int iField, int nValue )
{
// Get ValuesIO do do the work.
ValuesIO(GF_Write, iField, iRow, 1, &nValue);
}
/************************************************************************/
/* ValuesIO() */
/************************************************************************/
CPLErr HFARasterAttributeTable::ValuesIO( GDALRWFlag eRWFlag, int iField,
int iStartRow, int iLength,
double *pdfData )
{
if( eRWFlag == GF_Write && eAccess == GA_ReadOnly )
{
CPLError(CE_Failure, CPLE_NoWriteAccess,
"Dataset not open in update mode");
return CE_Failure;
}
if( iField < 0 || iField >= static_cast<int>(aoFields.size()) )
{
CPLError(CE_Failure, CPLE_AppDefined,
"iField (%d) out of range.", iField);
return CE_Failure;
}
if( iStartRow < 0 ||
iLength >= INT_MAX - iStartRow ||
(iStartRow + iLength) > nRows )
{
CPLError(CE_Failure, CPLE_AppDefined,
"iStartRow (%d) + iLength(%d) out of range.",
iStartRow, iLength);
return CE_Failure;
}
if( aoFields[iField].bConvertColors )
{
// Convert to/from float color field.
int *panColData =
static_cast<int *>(VSI_MALLOC2_VERBOSE(iLength, sizeof(int)));
if( panColData == nullptr )
{
CPLFree(panColData);
return CE_Failure;
}
if( eRWFlag == GF_Write )
{
for( int i = 0; i < iLength; i++ )
panColData[i] = static_cast<int>(pdfData[i]);
}
const CPLErr ret =
ColorsIO(eRWFlag, iField, iStartRow, iLength, panColData);
if( eRWFlag == GF_Read )
{
// Copy them back to doubles.
for( int i = 0; i < iLength; i++ )
pdfData[i] = panColData[i];
}
CPLFree(panColData);
return ret;
}
switch( aoFields[iField].eType )
{
case GFT_Integer:
{
// Allocate space for ints.
int *panColData = static_cast<int *>(
VSI_MALLOC2_VERBOSE(iLength, sizeof(int)));
if( panColData == nullptr )
{
CPLFree(panColData);
return CE_Failure;
}
if( eRWFlag == GF_Write )
{
// Copy the application supplied doubles to ints.
for( int i = 0; i < iLength; i++ )
panColData[i] = static_cast<int>(pdfData[i]);
}
// Do the ValuesIO as ints.
const CPLErr eVal =
ValuesIO(eRWFlag, iField, iStartRow, iLength, panColData );
if( eVal != CE_None )
{
CPLFree(panColData);
return eVal;
}
if( eRWFlag == GF_Read )
{
// Copy them back to doubles.
for( int i = 0; i < iLength; i++ )
pdfData[i] = panColData[i];
}
CPLFree(panColData);
}
break;
case GFT_Real:
{
if( (eRWFlag == GF_Read ) && aoFields[iField].bIsBinValues )
{
// Probably could change HFAReadBFUniqueBins to only read needed
// rows.
double *padfBinValues =
HFAReadBFUniqueBins(aoFields[iField].poColumn,
iStartRow+iLength);
if( padfBinValues == nullptr )
return CE_Failure;
memcpy(pdfData, &padfBinValues[iStartRow],
sizeof(double) * iLength);
CPLFree(padfBinValues);
}
else
{
if( VSIFSeekL(
hHFA->fp,
aoFields[iField].nDataOffset +
(static_cast<vsi_l_offset>(iStartRow) *
aoFields[iField].nElementSize), SEEK_SET ) != 0 )
{
return CE_Failure;
}
if( eRWFlag == GF_Read )
{
if( static_cast<int>(
VSIFReadL(pdfData, sizeof(double),
iLength, hHFA->fp )) != iLength )
{
CPLError(
CE_Failure, CPLE_AppDefined,
"HFARasterAttributeTable::ValuesIO: "
"Cannot read values");
return CE_Failure;
}
#ifdef CPL_MSB
GDALSwapWords(pdfData, 8, iLength, 8);
#endif
}
else
{
#ifdef CPL_MSB
GDALSwapWords(pdfData, 8, iLength, 8);
#endif
// Note: HFAAllocateSpace now called by CreateColumn so
// space should exist.
if( static_cast<int>(
VSIFWriteL(pdfData, sizeof(double), iLength,
hHFA->fp)) != iLength )
{
CPLError(CE_Failure, CPLE_AppDefined,
"HFARasterAttributeTable::ValuesIO: "
"Cannot write values");
return CE_Failure;
}
#ifdef CPL_MSB
// Swap back.
GDALSwapWords(pdfData, 8, iLength, 8);
#endif
}
}
}
break;
case GFT_String:
{
// Allocate space for string pointers.
char **papszColData = static_cast<char **>(
VSI_MALLOC2_VERBOSE(iLength, sizeof(char*)));
if( papszColData == nullptr )
{
return CE_Failure;
}
if( eRWFlag == GF_Write )
{
// Copy the application supplied doubles to strings.
for( int i = 0; i < iLength; i++ )
{
osWorkingResult.Printf("%.16g", pdfData[i]);
papszColData[i] = CPLStrdup(osWorkingResult);
}
}
// Do the ValuesIO as strings.
const CPLErr eVal =
ValuesIO(eRWFlag, iField, iStartRow, iLength, papszColData );
if( eVal != CE_None )
{
if( eRWFlag == GF_Write )
{
for( int i = 0; i < iLength; i++ )
CPLFree(papszColData[i]);
}
CPLFree(papszColData);
return eVal;
}
if( eRWFlag == GF_Read )
{
// Copy them back to doubles.
for( int i = 0; i < iLength; i++ )
pdfData[i] = CPLAtof(papszColData[i]);
}
// Either we allocated them for write, or they were allocated
// by ValuesIO on read.
for( int i = 0; i < iLength; i++ )
CPLFree(papszColData[i]);
CPLFree(papszColData);
}
break;
}
return CE_None;
}
/************************************************************************/
/* ValuesIO() */
/************************************************************************/
CPLErr HFARasterAttributeTable::ValuesIO( GDALRWFlag eRWFlag, int iField,
int iStartRow, int iLength,
int *pnData )
{
if( eRWFlag == GF_Write && eAccess == GA_ReadOnly )
{
CPLError(CE_Failure, CPLE_NoWriteAccess,
"Dataset not open in update mode");
return CE_Failure;
}
if( iField < 0 || iField >= static_cast<int>(aoFields.size()) )
{
CPLError(CE_Failure, CPLE_AppDefined,
"iField (%d) out of range.", iField);
return CE_Failure;
}
if( iStartRow < 0 ||
iLength >= INT_MAX - iStartRow ||
(iStartRow + iLength) > nRows )
{
CPLError(CE_Failure, CPLE_AppDefined,
"iStartRow (%d) + iLength(%d) out of range.",
iStartRow, iLength);
return CE_Failure;
}
if( aoFields[iField].bConvertColors )
{
// Convert to/from float color field.
return ColorsIO(eRWFlag, iField, iStartRow, iLength, pnData);
}
switch( aoFields[iField].eType )
{
case GFT_Integer:
{
if( VSIFSeekL(hHFA->fp,
aoFields[iField].nDataOffset +
(static_cast<vsi_l_offset>(iStartRow) *
aoFields[iField].nElementSize),
SEEK_SET) != 0 )
{
return CE_Failure;
}
GInt32 *panColData = static_cast<GInt32 *>(
VSI_MALLOC2_VERBOSE(iLength, sizeof(GInt32)));
if( panColData == nullptr )
{
return CE_Failure;
}
if( eRWFlag == GF_Read )
{
if( static_cast<int>(
VSIFReadL(panColData, sizeof(GInt32), iLength,
hHFA->fp)) != iLength )
{
CPLError(CE_Failure, CPLE_AppDefined,
"HFARasterAttributeTable::ValuesIO: "
"Cannot read values");
CPLFree(panColData);
return CE_Failure;
}
#ifdef CPL_MSB
GDALSwapWords(panColData, 4, iLength, 4);
#endif
// Now copy into application buffer. This extra step
// may not be necessary if sizeof(int) == sizeof(GInt32).
for( int i = 0; i < iLength; i++ )
pnData[i] = panColData[i];
}
else
{
// Copy from application buffer.
for( int i = 0; i < iLength; i++ )
panColData[i] = pnData[i];
#ifdef CPL_MSB
GDALSwapWords(panColData, 4, iLength, 4);
#endif
// Note: HFAAllocateSpace now called by CreateColumn so space
// should exist.
if( static_cast<int>(
VSIFWriteL(panColData, sizeof(GInt32), iLength,
hHFA->fp)) != iLength )
{
CPLError(CE_Failure, CPLE_AppDefined,
"HFARasterAttributeTable::ValuesIO: "
"Cannot write values");
CPLFree(panColData);
return CE_Failure;
}
}
CPLFree(panColData);
}
break;
case GFT_Real:
{
// Allocate space for doubles.
double *padfColData = static_cast<double *>(
VSI_MALLOC2_VERBOSE(iLength, sizeof(double)));
if( padfColData == nullptr )
{
return CE_Failure;
}
if( eRWFlag == GF_Write )
{
// Copy the application supplied ints to doubles.
for( int i = 0; i < iLength; i++ )
padfColData[i] = pnData[i];
}
// Do the ValuesIO as doubles.
const CPLErr eVal =
ValuesIO(eRWFlag, iField, iStartRow, iLength, padfColData );
if( eVal != CE_None )
{
CPLFree(padfColData);
return eVal;
}
if( eRWFlag == GF_Read )
{
// Copy them back to ints.
for( int i = 0; i < iLength; i++ )
pnData[i] = static_cast<int>(padfColData[i]);
}
CPLFree(padfColData);
}
break;
case GFT_String:
{
// Allocate space for string pointers.
char **papszColData = static_cast<char **>(
VSI_MALLOC2_VERBOSE(iLength, sizeof(char*)));
if( papszColData == nullptr )
{
return CE_Failure;
}
if( eRWFlag == GF_Write )
{
// Copy the application supplied ints to strings.
for( int i = 0; i < iLength; i++ )
{
osWorkingResult.Printf("%d", pnData[i]);
papszColData[i] = CPLStrdup(osWorkingResult);
}
}
// Do the ValuesIO as strings.
const CPLErr eVal =
ValuesIO(eRWFlag, iField, iStartRow, iLength, papszColData );
if( eVal != CE_None )
{
if( eRWFlag == GF_Write )
{
for( int i = 0; i < iLength; i++ )
CPLFree(papszColData[i]);
}
CPLFree(papszColData);
return eVal;
}
if( eRWFlag == GF_Read )
{
// Copy them back to ints.
for( int i = 0; i < iLength; i++ )
pnData[i] = atoi(papszColData[i]);
}
// Either we allocated them for write, or they were allocated
// by ValuesIO on read.
for( int i = 0; i < iLength; i++ )
CPLFree(papszColData[i]);
CPLFree(papszColData);
}
break;
}
return CE_None;
}
/************************************************************************/
/* ValuesIO() */
/************************************************************************/
CPLErr HFARasterAttributeTable::ValuesIO( GDALRWFlag eRWFlag, int iField,
int iStartRow, int iLength,
char **papszStrList )
{
if( eRWFlag == GF_Write && eAccess == GA_ReadOnly )
{
CPLError(CE_Failure, CPLE_NoWriteAccess,
"Dataset not open in update mode");
return CE_Failure;
}
if( iField < 0 || iField >= static_cast<int>(aoFields.size()) )
{
CPLError(CE_Failure, CPLE_AppDefined,
"iField (%d) out of range.", iField);
return CE_Failure;
}
if( iStartRow < 0 ||
iLength >= INT_MAX - iStartRow ||
(iStartRow + iLength) > nRows )
{
CPLError(CE_Failure, CPLE_AppDefined,
"iStartRow (%d) + iLength(%d) out of range.",
iStartRow, iLength);
return CE_Failure;
}
if( aoFields[iField].bConvertColors )
{
// Convert to/from float color field.
int *panColData = static_cast<int *>(
VSI_MALLOC2_VERBOSE(iLength, sizeof(int)));
if( panColData == nullptr )
{
CPLFree(panColData);
return CE_Failure;
}
if( eRWFlag == GF_Write )
{
for( int i = 0; i < iLength; i++ )
panColData[i] = atoi(papszStrList[i]);
}
const CPLErr ret =
ColorsIO(eRWFlag, iField, iStartRow, iLength, panColData);
if( eRWFlag == GF_Read )
{
// Copy them back to strings.
for( int i = 0; i < iLength; i++ )
{
osWorkingResult.Printf("%d", panColData[i]);
papszStrList[i] = CPLStrdup(osWorkingResult);
}
}
CPLFree(panColData);
return ret;
}
switch( aoFields[iField].eType )
{
case GFT_Integer:
{
// Allocate space for ints.
int *panColData = static_cast<int *>(
VSI_MALLOC2_VERBOSE(iLength, sizeof(int)));
if( panColData == nullptr )
{
return CE_Failure;
}
if( eRWFlag == GF_Write )
{
// Convert user supplied strings to ints.
for( int i = 0; i < iLength; i++ )
panColData[i] = atoi(papszStrList[i]);
}
// Call values IO to read/write ints.
const CPLErr eVal =
ValuesIO(eRWFlag, iField, iStartRow, iLength, panColData);
if( eVal != CE_None )
{
CPLFree(panColData);
return eVal;
}
if( eRWFlag == GF_Read )
{
// Convert ints back to strings.
for( int i = 0; i < iLength; i++ )
{
osWorkingResult.Printf("%d", panColData[i]);
papszStrList[i] = CPLStrdup(osWorkingResult);
}
}
CPLFree(panColData);
}
break;
case GFT_Real:
{
// Allocate space for doubles.
double *padfColData = static_cast<double *>(
VSI_MALLOC2_VERBOSE(iLength, sizeof(double)));