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aigdataset.cpp
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/******************************************************************************
*
* Project: Arc/Info Binary Grid Driver
* Purpose: Implements GDAL interface to underlying library.
* 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 "aigrid.h"
#include "avc.h"
#include "cpl_string.h"
#include "gdal_frmts.h"
#include "gdal_pam.h"
#include "gdal_rat.h"
#include "ogr_spatialref.h"
#include <vector>
static CPLString OSR_GDS(char **papszNV, const char *pszField,
const char *pszDefaultValue);
/************************************************************************/
/* ==================================================================== */
/* AIGDataset */
/* ==================================================================== */
/************************************************************************/
class AIGRasterBand;
class AIGDataset final : public GDALPamDataset
{
friend class AIGRasterBand;
AIGInfo_t *psInfo;
char **papszPrj;
OGRSpatialReference m_oSRS{};
GDALColorTable *poCT;
bool bHasReadRat;
void TranslateColorTable(const char *);
void ReadRAT();
GDALRasterAttributeTable *poRAT;
public:
AIGDataset();
~AIGDataset() override;
static GDALDataset *Open(GDALOpenInfo *);
CPLErr GetGeoTransform(double *) override;
const OGRSpatialReference *GetSpatialRef() const override;
char **GetFileList(void) override;
};
/************************************************************************/
/* ==================================================================== */
/* AIGRasterBand */
/* ==================================================================== */
/************************************************************************/
class AIGRasterBand final : public GDALPamRasterBand
{
friend class AIGDataset;
public:
AIGRasterBand(AIGDataset *, int);
CPLErr IReadBlock(int, int, void *) override;
double GetMinimum(int *pbSuccess) override;
double GetMaximum(int *pbSuccess) override;
double GetNoDataValue(int *pbSuccess) override;
GDALColorInterp GetColorInterpretation() override;
GDALColorTable *GetColorTable() override;
GDALRasterAttributeTable *GetDefaultRAT() override;
};
/************************************************************************/
/* AIGRasterBand() */
/************************************************************************/
AIGRasterBand::AIGRasterBand(AIGDataset *poDSIn, int nBandIn)
{
poDS = poDSIn;
nBand = nBandIn;
nBlockXSize = poDSIn->psInfo->nBlockXSize;
nBlockYSize = poDSIn->psInfo->nBlockYSize;
if (poDSIn->psInfo->nCellType == AIG_CELLTYPE_INT &&
poDSIn->psInfo->dfMin >= 0.0 && poDSIn->psInfo->dfMax <= 254.0)
{
eDataType = GDT_Byte;
}
else if (poDSIn->psInfo->nCellType == AIG_CELLTYPE_INT &&
poDSIn->psInfo->dfMin >= -32767 && poDSIn->psInfo->dfMax <= 32767)
{
eDataType = GDT_Int16;
}
else if (poDSIn->psInfo->nCellType == AIG_CELLTYPE_INT)
{
eDataType = GDT_Int32;
}
else
{
eDataType = GDT_Float32;
}
}
/************************************************************************/
/* IReadBlock() */
/************************************************************************/
CPLErr AIGRasterBand::IReadBlock(int nBlockXOff, int nBlockYOff, void *pImage)
{
AIGDataset *poODS = (AIGDataset *)poDS;
GInt32 *panGridRaster;
if (poODS->psInfo->nCellType == AIG_CELLTYPE_INT)
{
panGridRaster = (GInt32 *)VSIMalloc3(4, nBlockXSize, nBlockYSize);
if (panGridRaster == nullptr ||
AIGReadTile(poODS->psInfo, nBlockXOff, nBlockYOff, panGridRaster) !=
CE_None)
{
CPLFree(panGridRaster);
return CE_Failure;
}
if (eDataType == GDT_Byte)
{
for (int i = 0; i < nBlockXSize * nBlockYSize; i++)
{
if (panGridRaster[i] == ESRI_GRID_NO_DATA)
((GByte *)pImage)[i] = 255;
else
((GByte *)pImage)[i] = (GByte)panGridRaster[i];
}
}
else if (eDataType == GDT_Int16)
{
for (int i = 0; i < nBlockXSize * nBlockYSize; i++)
{
if (panGridRaster[i] == ESRI_GRID_NO_DATA)
((GInt16 *)pImage)[i] = -32768;
else
((GInt16 *)pImage)[i] = (GInt16)panGridRaster[i];
}
}
else
{
for (int i = 0; i < nBlockXSize * nBlockYSize; i++)
((GInt32 *)pImage)[i] = panGridRaster[i];
}
CPLFree(panGridRaster);
return CE_None;
}
else
{
return AIGReadFloatTile(poODS->psInfo, nBlockXOff, nBlockYOff,
(float *)pImage);
}
}
/************************************************************************/
/* GetDefaultRAT() */
/************************************************************************/
GDALRasterAttributeTable *AIGRasterBand::GetDefaultRAT()
{
AIGDataset *poODS = (AIGDataset *)poDS;
/* -------------------------------------------------------------------- */
/* Read info raster attribute table, if present. */
/* -------------------------------------------------------------------- */
if (!poODS->bHasReadRat)
{
poODS->ReadRAT();
poODS->bHasReadRat = true;
}
if (poODS->poRAT)
return poODS->poRAT;
else
return GDALPamRasterBand::GetDefaultRAT();
}
/************************************************************************/
/* GetMinimum() */
/************************************************************************/
double AIGRasterBand::GetMinimum(int *pbSuccess)
{
AIGDataset *poODS = (AIGDataset *)poDS;
if (pbSuccess != nullptr)
*pbSuccess = TRUE;
return poODS->psInfo->dfMin;
}
/************************************************************************/
/* GetMaximum() */
/************************************************************************/
double AIGRasterBand::GetMaximum(int *pbSuccess)
{
AIGDataset *poODS = (AIGDataset *)poDS;
if (pbSuccess != nullptr)
*pbSuccess = TRUE;
return poODS->psInfo->dfMax;
}
/************************************************************************/
/* GetNoDataValue() */
/************************************************************************/
double AIGRasterBand::GetNoDataValue(int *pbSuccess)
{
if (pbSuccess != nullptr)
*pbSuccess = TRUE;
if (eDataType == GDT_Float32)
return ESRI_GRID_FLOAT_NO_DATA;
if (eDataType == GDT_Int16)
return -32768;
if (eDataType == GDT_Byte)
return 255;
return ESRI_GRID_NO_DATA;
}
/************************************************************************/
/* GetColorInterpretation() */
/************************************************************************/
GDALColorInterp AIGRasterBand::GetColorInterpretation()
{
AIGDataset *poODS = (AIGDataset *)poDS;
if (poODS->poCT != nullptr)
return GCI_PaletteIndex;
return GDALPamRasterBand::GetColorInterpretation();
}
/************************************************************************/
/* GetColorTable() */
/************************************************************************/
GDALColorTable *AIGRasterBand::GetColorTable()
{
AIGDataset *poODS = (AIGDataset *)poDS;
if (poODS->poCT != nullptr)
return poODS->poCT;
return GDALPamRasterBand::GetColorTable();
}
/************************************************************************/
/* ==================================================================== */
/* AIGDataset */
/* ==================================================================== */
/************************************************************************/
/************************************************************************/
/* AIGDataset() */
/************************************************************************/
AIGDataset::AIGDataset()
: psInfo(nullptr), papszPrj(nullptr), poCT(nullptr), bHasReadRat(false),
poRAT(nullptr)
{
m_oSRS.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER);
}
/************************************************************************/
/* ~AIGDataset() */
/************************************************************************/
AIGDataset::~AIGDataset()
{
FlushCache(true);
CSLDestroy(papszPrj);
if (psInfo != nullptr)
AIGClose(psInfo);
if (poCT != nullptr)
delete poCT;
if (poRAT != nullptr)
delete poRAT;
}
/************************************************************************/
/* GetFileList() */
/************************************************************************/
char **AIGDataset::GetFileList()
{
char **papszFileList = GDALPamDataset::GetFileList();
// Add in all files in the cover directory.
char **papszCoverFiles = VSIReadDir(GetDescription());
for (int i = 0; papszCoverFiles != nullptr && papszCoverFiles[i] != nullptr;
i++)
{
if (EQUAL(papszCoverFiles[i], ".") || EQUAL(papszCoverFiles[i], ".."))
continue;
papszFileList = CSLAddString(
papszFileList,
CPLFormFilename(GetDescription(), papszCoverFiles[i], nullptr));
}
CSLDestroy(papszCoverFiles);
return papszFileList;
}
/************************************************************************/
/* AIGErrorHandlerVATOpen() */
/************************************************************************/
class AIGErrorDescription
{
public:
CPLErr eErr;
CPLErrorNum no;
CPLString osMsg;
};
static void CPL_STDCALL AIGErrorHandlerVATOpen(CPLErr eErr, CPLErrorNum no,
const char *msg)
{
std::vector<AIGErrorDescription> *paoErrors =
(std::vector<AIGErrorDescription> *)CPLGetErrorHandlerUserData();
if (STARTS_WITH_CI(msg, "EOF encountered in") &&
strstr(msg, "../info/arc.dir") != nullptr)
return;
if (STARTS_WITH_CI(msg, "Failed to open table "))
return;
AIGErrorDescription oError;
oError.eErr = eErr;
oError.no = no;
oError.osMsg = msg;
paoErrors->push_back(oError);
}
/************************************************************************/
/* ReadRAT() */
/************************************************************************/
void AIGDataset::ReadRAT()
{
/* -------------------------------------------------------------------- */
/* Check if we have an associated info directory. If not */
/* return quietly. */
/* -------------------------------------------------------------------- */
CPLString osInfoPath, osTableName;
VSIStatBufL sStatBuf;
osInfoPath = psInfo->pszCoverName;
osInfoPath += "/../info";
if (VSIStatL(osInfoPath, &sStatBuf) != 0)
{
CPLDebug("AIG", "No associated info directory at: %s, skip RAT.",
osInfoPath.c_str());
return;
}
osInfoPath += "/";
/* -------------------------------------------------------------------- */
/* Attempt to open the VAT table associated with this coverage. */
/* -------------------------------------------------------------------- */
osTableName = CPLGetFilename(psInfo->pszCoverName);
osTableName += ".VAT";
/* Turn off errors that can be triggered if the info has no VAT */
/* table related with this coverage */
std::vector<AIGErrorDescription> aoErrors;
CPLPushErrorHandlerEx(AIGErrorHandlerVATOpen, &aoErrors);
AVCBinFile *psFile = AVCBinReadOpen(
osInfoPath, osTableName, AVCCoverTypeUnknown, AVCFileTABLE, nullptr);
CPLPopErrorHandler();
/* Emit other errors */
std::vector<AIGErrorDescription>::const_iterator oIter;
for (oIter = aoErrors.begin(); oIter != aoErrors.end(); ++oIter)
{
const AIGErrorDescription &oError = *oIter;
CPLError(oError.eErr, oError.no, "%s", oError.osMsg.c_str());
}
CPLErrorReset();
if (psFile == nullptr)
return;
AVCTableDef *psTableDef = psFile->hdr.psTableDef;
/* -------------------------------------------------------------------- */
/* Setup columns in corresponding RAT. */
/* -------------------------------------------------------------------- */
poRAT = new GDALDefaultRasterAttributeTable();
for (int iField = 0; iField < psTableDef->numFields; iField++)
{
AVCFieldInfo *psFDef = psTableDef->pasFieldDef + iField;
GDALRATFieldUsage eFUsage = GFU_Generic;
GDALRATFieldType eFType = GFT_String;
CPLString osFName = psFDef->szName;
osFName.Trim();
if (EQUAL(osFName, "VALUE"))
eFUsage = GFU_MinMax;
else if (EQUAL(osFName, "COUNT"))
eFUsage = GFU_PixelCount;
if (psFDef->nType1 * 10 == AVC_FT_BININT)
eFType = GFT_Integer;
else if (psFDef->nType1 * 10 == AVC_FT_BINFLOAT)
eFType = GFT_Real;
poRAT->CreateColumn(osFName, eFType, eFUsage);
}
/* -------------------------------------------------------------------- */
/* Process all records into RAT. */
/* -------------------------------------------------------------------- */
AVCField *pasFields = nullptr;
int iRecord = 0;
while ((pasFields = AVCBinReadNextTableRec(psFile)) != nullptr)
{
iRecord++;
for (int iField = 0; iField < psTableDef->numFields; iField++)
{
switch (psTableDef->pasFieldDef[iField].nType1 * 10)
{
case AVC_FT_DATE:
case AVC_FT_FIXINT:
case AVC_FT_CHAR:
case AVC_FT_FIXNUM:
{
// XXX - I bet mloskot would like to see const_cast +
// static_cast :-)
const char *pszTmp =
(const char *)(pasFields[iField].pszStr);
CPLString osStrValue(pszTmp);
poRAT->SetValue(iRecord - 1, iField, osStrValue.Trim());
}
break;
case AVC_FT_BININT:
if (psTableDef->pasFieldDef[iField].nSize == 4)
poRAT->SetValue(iRecord - 1, iField,
pasFields[iField].nInt32);
else
poRAT->SetValue(iRecord - 1, iField,
pasFields[iField].nInt16);
break;
case AVC_FT_BINFLOAT:
if (psTableDef->pasFieldDef[iField].nSize == 4)
poRAT->SetValue(iRecord - 1, iField,
pasFields[iField].fFloat);
else
poRAT->SetValue(iRecord - 1, iField,
pasFields[iField].dDouble);
break;
}
}
}
/* -------------------------------------------------------------------- */
/* Cleanup */
/* -------------------------------------------------------------------- */
AVCBinReadClose(psFile);
/* Workaround against #2447 and #3031, to avoid binding languages */
/* not being able to open the dataset */
CPLErrorReset();
}
/************************************************************************/
/* Open() */
/************************************************************************/
GDALDataset *AIGDataset::Open(GDALOpenInfo *poOpenInfo)
{
/* -------------------------------------------------------------------- */
/* If the pass name ends in .adf assume a file within the */
/* coverage has been selected, and strip that off the coverage */
/* name. */
/* -------------------------------------------------------------------- */
CPLString osCoverName;
osCoverName = poOpenInfo->pszFilename;
if (osCoverName.size() > 4 &&
EQUAL(osCoverName.c_str() + osCoverName.size() - 4, ".adf"))
{
osCoverName = CPLGetDirname(poOpenInfo->pszFilename);
if (osCoverName == "")
osCoverName = ".";
}
/* -------------------------------------------------------------------- */
/* Otherwise verify we were already given a directory. */
/* -------------------------------------------------------------------- */
else if (!poOpenInfo->bIsDirectory)
{
return nullptr;
}
/* -------------------------------------------------------------------- */
/* Verify that a few of the "standard" files are available. */
/* -------------------------------------------------------------------- */
VSIStatBufL sStatBuf;
CPLString osTestName;
osTestName.Printf("%s/hdr.adf", osCoverName.c_str());
if (VSIStatL(osTestName, &sStatBuf) != 0)
{
osTestName.Printf("%s/HDR.ADF", osCoverName.c_str());
if (VSIStatL(osTestName, &sStatBuf) != 0)
return nullptr;
}
/* -------------------------------------------------------------------- */
/* Confirm we have at least one raster data file. These can be */
/* sparse so we don't require particular ones to exists but if */
/* there are none this is likely not a grid. */
/* -------------------------------------------------------------------- */
char **papszFileList = VSIReadDir(osCoverName);
bool bGotOne = false;
if (papszFileList == nullptr)
{
/* Useful when reading from /vsicurl/ on servers that don't */
/* return a file list */
/* such as
* /vsicurl/http://eros.usgs.gov/archive/nslrsda/GeoTowns/NLCD/89110458
*/
do
{
osTestName.Printf("%s/W001001.ADF", osCoverName.c_str());
if (VSIStatL(osTestName, &sStatBuf) == 0)
{
bGotOne = true;
break;
}
osTestName.Printf("%s/w001001.adf", osCoverName.c_str());
if (VSIStatL(osTestName, &sStatBuf) == 0)
{
bGotOne = true;
break;
}
} while (false);
}
for (int iFile = 0; papszFileList != nullptr &&
papszFileList[iFile] != nullptr && !bGotOne;
iFile++)
{
if (strlen(papszFileList[iFile]) != 11)
continue;
// looking for something like w001001.adf or z001013.adf
if (papszFileList[iFile][0] != 'w' && papszFileList[iFile][0] != 'W' &&
papszFileList[iFile][0] != 'z' && papszFileList[iFile][0] != 'Z')
continue;
if (!STARTS_WITH(papszFileList[iFile] + 1, "0010"))
continue;
if (!EQUAL(papszFileList[iFile] + 7, ".adf"))
continue;
bGotOne = true;
}
CSLDestroy(papszFileList);
if (!bGotOne)
return nullptr;
/* -------------------------------------------------------------------- */
/* Open the file. */
/* -------------------------------------------------------------------- */
AIGInfo_t *psInfo = AIGOpen(osCoverName.c_str(), "r");
if (psInfo == nullptr)
{
CPLErrorReset();
return nullptr;
}
/* -------------------------------------------------------------------- */
/* Confirm the requested access is supported. */
/* -------------------------------------------------------------------- */
if (poOpenInfo->eAccess == GA_Update)
{
AIGClose(psInfo);
CPLError(CE_Failure, CPLE_NotSupported,
"The AIG driver does not support update access to existing"
" datasets.\n");
return nullptr;
}
/* -------------------------------------------------------------------- */
/* Create a corresponding GDALDataset. */
/* -------------------------------------------------------------------- */
AIGDataset *poDS = new AIGDataset();
poDS->psInfo = psInfo;
/* -------------------------------------------------------------------- */
/* Try to read a color table (.clr). It seems it is legal to */
/* have more than one so we just use the first one found. */
/* -------------------------------------------------------------------- */
char **papszFiles = VSIReadDir(psInfo->pszCoverName);
CPLString osClrFilename;
CPLString osCleanPath = CPLCleanTrailingSlash(psInfo->pszCoverName);
// first check for any .clr in coverage dir.
for (int iFile = 0; papszFiles != nullptr && papszFiles[iFile] != nullptr;
iFile++)
{
if (!EQUAL(CPLGetExtension(papszFiles[iFile]), "clr") &&
!EQUAL(CPLGetExtension(papszFiles[iFile]), "CLR"))
continue;
osClrFilename =
CPLFormFilename(psInfo->pszCoverName, papszFiles[iFile], nullptr);
break;
}
CSLDestroy(papszFiles);
// Look in parent if we don't find a .clr in the coverage dir.
if (osClrFilename.empty())
{
CPLString osTestClrFilename;
osTestClrFilename.Printf("%s/../%s.clr", psInfo->pszCoverName,
CPLGetFilename(osCleanPath));
if (VSIStatL(osTestClrFilename, &sStatBuf) != 0)
{
osTestClrFilename.Printf("%s/../%s.CLR", psInfo->pszCoverName,
CPLGetFilename(osCleanPath));
if (!VSIStatL(osTestClrFilename, &sStatBuf))
osClrFilename = std::move(osTestClrFilename);
}
else
osClrFilename = std::move(osTestClrFilename);
}
if (!osClrFilename.empty())
poDS->TranslateColorTable(osClrFilename);
/* -------------------------------------------------------------------- */
/* Establish raster info. */
/* -------------------------------------------------------------------- */
poDS->nRasterXSize = psInfo->nPixels;
poDS->nRasterYSize = psInfo->nLines;
poDS->nBands = 1;
/* -------------------------------------------------------------------- */
/* Create band information objects. */
/* -------------------------------------------------------------------- */
poDS->SetBand(1, new AIGRasterBand(poDS, 1));
/* -------------------------------------------------------------------- */
/* Try to read projection file. */
/* -------------------------------------------------------------------- */
const char *pszPrjFilename =
CPLFormCIFilename(psInfo->pszCoverName, "prj", "adf");
if (VSIStatL(pszPrjFilename, &sStatBuf) == 0)
{
OGRSpatialReference oSRS;
oSRS.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER);
poDS->papszPrj = CSLLoad(pszPrjFilename);
if (oSRS.importFromESRI(poDS->papszPrj) == OGRERR_NONE)
{
// If geographic values are in seconds, we must transform.
// Is there a code for minutes too?
if (oSRS.IsGeographic() &&
EQUAL(OSR_GDS(poDS->papszPrj, "Units", ""), "DS"))
{
psInfo->dfLLX /= 3600.0;
psInfo->dfURY /= 3600.0;
psInfo->dfCellSizeX /= 3600.0;
psInfo->dfCellSizeY /= 3600.0;
}
poDS->m_oSRS = std::move(oSRS);
}
}
/* -------------------------------------------------------------------- */
/* Initialize any PAM information. */
/* -------------------------------------------------------------------- */
poDS->SetDescription(psInfo->pszCoverName);
poDS->TryLoadXML();
/* -------------------------------------------------------------------- */
/* Open overviews. */
/* -------------------------------------------------------------------- */
poDS->oOvManager.Initialize(poDS, psInfo->pszCoverName);
return poDS;
}
/************************************************************************/
/* GetGeoTransform() */
/************************************************************************/
CPLErr AIGDataset::GetGeoTransform(double *padfTransform)
{
padfTransform[0] = psInfo->dfLLX;
padfTransform[1] = psInfo->dfCellSizeX;
padfTransform[2] = 0;
padfTransform[3] = psInfo->dfURY;
padfTransform[4] = 0;
padfTransform[5] = -psInfo->dfCellSizeY;
return CE_None;
}
/************************************************************************/
/* GetSpatialRef() */
/************************************************************************/
const OGRSpatialReference *AIGDataset::GetSpatialRef() const
{
return m_oSRS.IsEmpty() ? nullptr : &m_oSRS;
}
/************************************************************************/
/* TranslateColorTable() */
/************************************************************************/
void AIGDataset::TranslateColorTable(const char *pszClrFilename)
{
char **papszClrLines = CSLLoad(pszClrFilename);
if (papszClrLines == nullptr)
return;
poCT = new GDALColorTable();
for (int iLine = 0; papszClrLines[iLine] != nullptr; iLine++)
{
char **papszTokens = CSLTokenizeString(papszClrLines[iLine]);
if (CSLCount(papszTokens) >= 4 && papszTokens[0][0] != '#')
{
int nIndex;
GDALColorEntry sEntry;
nIndex = atoi(papszTokens[0]);
sEntry.c1 = (short)atoi(papszTokens[1]);
sEntry.c2 = (short)atoi(papszTokens[2]);
sEntry.c3 = (short)atoi(papszTokens[3]);
sEntry.c4 = 255;
if ((nIndex < 0 || nIndex > 33000) ||
(sEntry.c1 < 0 || sEntry.c1 > 255) ||
(sEntry.c2 < 0 || sEntry.c2 > 255) ||
(sEntry.c3 < 0 || sEntry.c3 > 255))
{
CSLDestroy(papszTokens);
CPLError(CE_Failure, CPLE_AppDefined,
"Color table entry appears to be corrupt, skipping "
"the rest. ");
break;
}
poCT->SetColorEntry(nIndex, &sEntry);
}
CSLDestroy(papszTokens);
}
CSLDestroy(papszClrLines);
}
/************************************************************************/
/* OSR_GDS() */
/************************************************************************/
static CPLString OSR_GDS(char **papszNV, const char *pszField,
const char *pszDefaultValue)
{
if (papszNV == nullptr || papszNV[0] == nullptr)
return pszDefaultValue;
int iLine = 0;
for (; papszNV[iLine] != nullptr &&
!EQUALN(papszNV[iLine], pszField, strlen(pszField));
iLine++)
{
}
if (papszNV[iLine] == nullptr)
return pszDefaultValue;
else
{
CPLString osResult;
char **papszTokens = CSLTokenizeString(papszNV[iLine]);
if (CSLCount(papszTokens) > 1)
osResult = papszTokens[1];
else
osResult = pszDefaultValue;
CSLDestroy(papszTokens);
return osResult;
}
}
/************************************************************************/
/* AIGRename() */
/* */
/* Custom renamer for AIG dataset. */
/************************************************************************/
static CPLErr AIGRename(const char *pszNewName, const char *pszOldName)
{
/* -------------------------------------------------------------------- */
/* Make sure we are talking about paths to the coverage */
/* directory. */
/* -------------------------------------------------------------------- */
CPLString osOldPath, osNewPath;
if (strlen(CPLGetExtension(pszNewName)) > 0)
osNewPath = CPLGetPath(pszNewName);
else
osNewPath = pszNewName;
if (strlen(CPLGetExtension(pszOldName)) > 0)
osOldPath = CPLGetPath(pszOldName);
else
osOldPath = pszOldName;
/* -------------------------------------------------------------------- */
/* Get file list. */
/* -------------------------------------------------------------------- */
GDALDatasetH hDS = GDALOpen(osOldPath, GA_ReadOnly);
if (hDS == nullptr)
return CE_Failure;
char **papszFileList = GDALGetFileList(hDS);
GDALClose(hDS);
if (papszFileList == nullptr)
return CE_Failure;
/* -------------------------------------------------------------------- */
/* Work out the corresponding new names. */
/* -------------------------------------------------------------------- */
char **papszNewFileList = nullptr;
for (int i = 0; papszFileList[i] != nullptr; i++)
{
CPLString osNewFilename;
if (!EQUALN(papszFileList[i], osOldPath, osOldPath.size()))
{
CPLAssert(false);
return CE_Failure;
}
osNewFilename = osNewPath + (papszFileList[i] + osOldPath.size());
papszNewFileList = CSLAddString(papszNewFileList, osNewFilename);
}
/* -------------------------------------------------------------------- */
/* Try renaming the directory. */
/* -------------------------------------------------------------------- */
if (VSIRename(osNewPath, osOldPath) != 0)
{
if (VSIMkdir(osNewPath, 0777) != 0)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Unable to create directory %s:\n%s", osNewPath.c_str(),
VSIStrerror(errno));
CSLDestroy(papszNewFileList);
return CE_Failure;
}
}
/* -------------------------------------------------------------------- */
/* Copy/rename any remaining files. */
/* -------------------------------------------------------------------- */
VSIStatBufL sStatBuf;
for (int i = 0; papszFileList[i] != nullptr; i++)
{
if (VSIStatL(papszFileList[i], &sStatBuf) == 0 &&
VSI_ISREG(sStatBuf.st_mode))
{
if (CPLMoveFile(papszNewFileList[i], papszFileList[i]) != 0)
{
CPLError(CE_Failure, CPLE_AppDefined,
"Unable to move %s to %s:\n%s", papszFileList[i],
papszNewFileList[i], VSIStrerror(errno));
CSLDestroy(papszNewFileList);
return CE_Failure;
}
}
}
if (VSIStatL(osOldPath, &sStatBuf) == 0)
{
if (CPLUnlinkTree(osOldPath) != 0)
{
CPLError(CE_Warning, CPLE_AppDefined,
"Unable to cleanup old path.");
}
}
CSLDestroy(papszFileList);
CSLDestroy(papszNewFileList);
return CE_None;
}
/************************************************************************/
/* AIGDelete() */
/* */
/* Custom dataset deleter for AIG dataset. */
/************************************************************************/
static CPLErr AIGDelete(const char *pszDatasetname)
{
/* -------------------------------------------------------------------- */
/* Get file list. */
/* -------------------------------------------------------------------- */
GDALDatasetH hDS = GDALOpen(pszDatasetname, GA_ReadOnly);
if (hDS == nullptr)