OGRAVCE00Layer::~OGRAVCE00Layer()
{
if (psRead)
{
AVCE00ReadCloseE00(psRead);
psRead = NULL;
}
if (psTableRead)
{
AVCE00ReadCloseE00(psTableRead);
psTableRead = NULL;
}
if (pszTableFilename)
{
CPLFree(pszTableFilename);
pszTableFilename = NULL;
}
}
OGRAVCE00DataSource::~OGRAVCE00DataSource()
{
if( psE00 )
{
AVCE00ReadCloseE00( psE00 );
psE00 = NULL;
}
CPLFree( pszName );
for( int i = 0; i < nLayers; i++ )
delete papoLayers[i];
CPLFree( papoLayers );
}
int OGRAVCE00Layer::AppendTableFields( OGRFeature *poFeature )
{
if (psTableRead == NULL)
return FALSE;
/* -------------------------------------------------------------------- */
/* Open the table if it is currently closed. */
/* -------------------------------------------------------------------- */
if (psTableRead == NULL)
{
psTableRead = AVCE00ReadOpenE00(pszTableFilename);
if (psTableRead == NULL)
return FALSE;
/* advance to the specified line number */
if (AVCE00ReadGotoSectionE00(psTableRead, psTableSection, 0) != 0)
{
AVCE00ReadCloseE00(psTableRead);
psTableRead = NULL;
return FALSE;
}
nTablePos = 0;
}
/* -------------------------------------------------------------------- */
/* Read the info record. */
/* */
/* We usually assume the FID of the feature is the key but in a */
/* polygon coverage we need to use the PolyId attribute of LAB */
/* features to lookup the related attributes. In this case */
/* nTableAttrIndex will already be setup to refer to the */
/* PolyId field. */
/* -------------------------------------------------------------------- */
int nRecordId;
void *hRecord;
if( nTableAttrIndex == -1 )
nRecordId = (int) poFeature->GetFID();
else
nRecordId = poFeature->GetFieldAsInteger( nTableAttrIndex );
if (nRecordId <= nTablePos)
{
if (AVCE00ReadGotoSectionE00(psTableRead, psTableSection, 0) != 0)
return FALSE;
nTablePos = 0;
}
do
{
hRecord = AVCE00ReadNextObjectE00(psTableRead);
++nTablePos;
}
while (NULL != hRecord && nTablePos < nRecordId);
if( hRecord == NULL )
return FALSE;
/* -------------------------------------------------------------------- */
/* Translate it. */
/* -------------------------------------------------------------------- */
return TranslateTableFields( poFeature, nTableBaseField,
psTableRead->hParseInfo->hdr.psTableDef,
(AVCField *) hRecord );
}
int OGRAVCE00Layer::CheckSetupTable(AVCE00Section *psTblSectionIn)
{
if (psTableRead)
return FALSE;
const char *pszTableType = NULL;
switch (eSectionType)
{
case AVCFileARC:
pszTableType = ".AAT";
break;
case AVCFilePAL:
case AVCFileLAB:
pszTableType = ".PAT";
break;
default:
break;
}
/* -------------------------------------------------------------------- */
/* Is the table type found anywhere in the section pszName? Do */
/* a case insensitive check. */
/* -------------------------------------------------------------------- */
if( pszTableType == NULL )
return FALSE;
int iCheckOff;
for( iCheckOff = 0;
psTblSectionIn->pszName[iCheckOff] != '\0';
iCheckOff++ )
{
if( EQUALN(psTblSectionIn->pszName + iCheckOff,
pszTableType, strlen(pszTableType) ) )
break;
}
if( psTblSectionIn->pszName[iCheckOff] == '\0' )
return FALSE;
psTableSection = psTblSectionIn;
/* -------------------------------------------------------------------- */
/* Try opening the table. */
/* -------------------------------------------------------------------- */
psTableRead = AVCE00ReadOpenE00(psTblSectionIn->pszFilename);
if (psTableRead == NULL)
return FALSE;
/* advance to the specified line number */
if (AVCE00ReadGotoSectionE00(psTableRead, psTableSection, 0) != 0)
{
AVCE00ReadCloseE00(psTableRead);
psTableRead = NULL;
return FALSE;
}
AVCE00ReadNextObjectE00(psTableRead);
bNeedReset = 1;
pszTableFilename = CPLStrdup(psTblSectionIn->pszFilename);
nTableBaseField = poFeatureDefn->GetFieldCount();
if (eSectionType == AVCFileLAB)
{
AVCE00ReadE00Ptr psInfo = ((OGRAVCE00DataSource *) poDS)->GetInfo();
for( int iSection = 0; iSection < psInfo->numSections; iSection++ )
{
if( psInfo->pasSections[iSection].eType == AVCFilePAL )
nTableAttrIndex = poFeatureDefn->GetFieldIndex( "PolyId" );
}
}
/* -------------------------------------------------------------------- */
/* Setup attributes. */
/* -------------------------------------------------------------------- */
AppendTableDefinition( psTableRead->hParseInfo->hdr.psTableDef );
/* -------------------------------------------------------------------- */
/* Close table so we don't have to many files open at once. */
/* -------------------------------------------------------------------- */
/* AVCE00ReadCloseE00( psTableRead ); */
return TRUE;
}
