int main(void) {
printf("Enter a string of 0s, 1s and ? to generate all possible combinations\n");
printf("> ");
while (scanf("%s", input_str) == 1) {
wildcards(input_str);
printf("> ");
}
return 0;
}
QgsDataItem *QgsOgrDataItemProvider::createDataItem( const QString &pathIn, QgsDataItem *parentItem )
{
QString path( pathIn );
if ( path.isEmpty() )
return nullptr;
QgsDebugMsgLevel( "thePath: " + path, 2 );
// zip settings + info
QgsSettings settings;
QString scanZipSetting = settings.value( QStringLiteral( "qgis/scanZipInBrowser2" ), "basic" ).toString();
QString vsiPrefix = QgsZipItem::vsiPrefix( path );
bool is_vsizip = ( vsiPrefix == QLatin1String( "/vsizip/" ) );
bool is_vsigzip = ( vsiPrefix == QLatin1String( "/vsigzip/" ) );
bool is_vsitar = ( vsiPrefix == QLatin1String( "/vsitar/" ) );
// should we check ext. only?
// check if scanItemsInBrowser2 == extension or parent dir in scanItemsFastScanUris
// TODO - do this in dir item, but this requires a way to inform which extensions are supported by provider
// maybe a callback function or in the provider registry?
bool scanExtSetting = false;
if ( ( settings.value( QStringLiteral( "qgis/scanItemsInBrowser2" ),
"extension" ).toString() == QLatin1String( "extension" ) ) ||
( parentItem && settings.value( QStringLiteral( "qgis/scanItemsFastScanUris" ),
QStringList() ).toStringList().contains( parentItem->path() ) ) ||
( ( is_vsizip || is_vsitar ) && parentItem && parentItem->parent() &&
settings.value( QStringLiteral( "qgis/scanItemsFastScanUris" ),
QStringList() ).toStringList().contains( parentItem->parent()->path() ) ) )
{
scanExtSetting = true;
}
// get suffix, removing .gz if present
QString tmpPath = path; //path used for testing, not for layer creation
if ( is_vsigzip )
tmpPath.chop( 3 );
QFileInfo info( tmpPath );
QString suffix = info.suffix().toLower();
// extract basename with extension
info.setFile( path );
QString name = info.fileName();
// If a .tab exists, then the corresponding .map/.dat is very likely a
// side-car file of the .tab
if ( suffix == QLatin1String( "map" ) || suffix == QLatin1String( "dat" ) )
{
if ( QFileInfo( QDir( info.path() ), info.baseName() + ".tab" ).exists() )
return nullptr;
}
QgsDebugMsgLevel( "thePath= " + path + " tmpPath= " + tmpPath + " name= " + name
+ " suffix= " + suffix + " vsiPrefix= " + vsiPrefix, 3 );
QStringList myExtensions = fileExtensions();
QStringList dirExtensions = directoryExtensions();
// allow only normal files, supported directories, or VSIFILE items to continue
bool isOgrSupportedDirectory = info.isDir() && dirExtensions.contains( suffix );
if ( !isOgrSupportedDirectory && !info.isFile() && vsiPrefix.isEmpty() )
return nullptr;
// skip *.aux.xml files (GDAL auxiliary metadata files),
// *.shp.xml files (ESRI metadata) and *.tif.xml files (TIFF metadata)
// unless that extension is in the list (*.xml might be though)
if ( path.endsWith( QLatin1String( ".aux.xml" ), Qt::CaseInsensitive ) &&
!myExtensions.contains( QStringLiteral( "aux.xml" ) ) )
return nullptr;
if ( path.endsWith( QLatin1String( ".shp.xml" ), Qt::CaseInsensitive ) &&
!myExtensions.contains( QStringLiteral( "shp.xml" ) ) )
return nullptr;
if ( path.endsWith( QLatin1String( ".tif.xml" ), Qt::CaseInsensitive ) &&
!myExtensions.contains( QStringLiteral( "tif.xml" ) ) )
return nullptr;
// skip QGIS style xml files
if ( path.endsWith( QLatin1String( ".xml" ), Qt::CaseInsensitive ) &&
QgsStyle::isXmlStyleFile( path ) )
return nullptr;
// We have to filter by extensions, otherwise e.g. all Shapefile files are displayed
// because OGR drive can open also .dbf, .shx.
if ( myExtensions.indexOf( suffix ) < 0 && !dirExtensions.contains( suffix ) )
{
bool matches = false;
const auto constWildcards = wildcards();
for ( const QString &wildcard : constWildcards )
{
QRegExp rx( wildcard, Qt::CaseInsensitive, QRegExp::Wildcard );
if ( rx.exactMatch( info.fileName() ) )
{
matches = true;
break;
}
}
if ( !matches )
return nullptr;
}
// .dbf should probably appear if .shp is not present
if ( suffix == QLatin1String( "dbf" ) )
{
QString pathShp = path.left( path.count() - 4 ) + ".shp";
if ( QFileInfo::exists( pathShp ) )
return nullptr;
}
// fix vsifile path and name
if ( !vsiPrefix.isEmpty() )
{
// add vsiPrefix to path if needed
if ( !path.startsWith( vsiPrefix ) )
path = vsiPrefix + path;
// if this is a /vsigzip/path_to_zip.zip/file_inside_zip remove the full path from the name
// no need to change the name I believe
#if 0
if ( ( is_vsizip || is_vsitar ) && ( path != vsiPrefix + parentItem->path() ) )
{
name = path;
name = name.replace( vsiPrefix + parentItem->path() + '/', "" );
}
#endif
}
// Filters out the OGR/GDAL supported formats that can contain multiple layers
// and should be treated like a DB: GeoPackage and SQLite
// NOTE: this formats are scanned for rasters too and they must
// be skipped by "gdal" provider or the rasters will be listed
// twice. ogrSupportedDbLayersExtensions must be kept in sync
// with the companion variable (same name) in the gdal provider
// class
// TODO: add more OGR supported multiple layers formats here!
static QStringList sOgrSupportedDbLayersExtensions { QStringLiteral( "gpkg" ),
QStringLiteral( "sqlite" ),
QStringLiteral( "db" ),
QStringLiteral( "gdb" ),
QStringLiteral( "kml" ) };
static QStringList sOgrSupportedDbDriverNames { QStringLiteral( "GPKG" ),
QStringLiteral( "db" ),
QStringLiteral( "gdb" ) };
// these extensions are trivial to read, so there's no need to rely on
// the extension only scan here -- avoiding it always gives us the correct data type
// and sublayer visiblity
static QStringList sSkipFastTrackExtensions { QStringLiteral( "xlsx" ),
QStringLiteral( "ods" ),
QStringLiteral( "csv" ),
QStringLiteral( "nc" ) };
// Fast track: return item without testing if:
// scanExtSetting or zipfile and scan zip == "Basic scan"
// netCDF files can be both raster or vector, so fallback to opening
if ( ( scanExtSetting ||
( ( is_vsizip || is_vsitar ) && scanZipSetting == QLatin1String( "basic" ) ) ) &&
!sSkipFastTrackExtensions.contains( suffix ) )
{
// if this is a VRT file make sure it is vector VRT to avoid duplicates
if ( suffix == QLatin1String( "vrt" ) )
{
CPLPushErrorHandler( CPLQuietErrorHandler );
CPLErrorReset();
GDALDriverH hDriver = GDALIdentifyDriver( path.toUtf8().constData(), nullptr );
CPLPopErrorHandler();
if ( !hDriver || GDALGetDriverShortName( hDriver ) == QLatin1String( "VRT" ) )
{
QgsDebugMsgLevel( QStringLiteral( "Skipping VRT file because root is not a OGR VRT" ), 2 );
return nullptr;
}
}
// Handle collections
// Check if the layer has sublayers by comparing the extension
QgsDataItem *item = nullptr;
if ( ! sOgrSupportedDbLayersExtensions.contains( suffix ) )
{
item = new QgsOgrLayerItem( parentItem, name, path, path, QgsLayerItem::Vector );
}
else if ( suffix.compare( QLatin1String( "gpkg" ), Qt::CaseInsensitive ) == 0 )
{
item = new QgsGeoPackageCollectionItem( parentItem, name, path );
}
else
{
item = new QgsOgrDataCollectionItem( parentItem, name, path );
}
if ( item )
return item;
}
// Slow track: scan file contents
QgsDataItem *item = nullptr;
// test that file is valid with OGR
if ( OGRGetDriverCount() == 0 )
{
OGRRegisterAll();
}
// do not print errors, but write to debug
CPLPushErrorHandler( CPLQuietErrorHandler );
CPLErrorReset();
gdal::dataset_unique_ptr hDS( GDALOpenEx( path.toUtf8().constData(), GDAL_OF_VECTOR, nullptr, nullptr, nullptr ) );
CPLPopErrorHandler();
if ( ! hDS )
{
QgsDebugMsg( QStringLiteral( "GDALOpen error # %1 : %2 on %3" ).arg( CPLGetLastErrorNo() ).arg( CPLGetLastErrorMsg() ).arg( path ) );
return nullptr;
}
GDALDriverH hDriver = GDALGetDatasetDriver( hDS.get() );
QString driverName = GDALGetDriverShortName( hDriver );
QgsDebugMsgLevel( QStringLiteral( "GDAL Driver : %1" ).arg( driverName ), 2 );
int numLayers = GDALDatasetGetLayerCount( hDS.get() );
// GeoPackage needs a specialized data item, mainly because of raster deletion not
// yet implemented in GDAL (2.2.1)
if ( driverName == QLatin1String( "GPKG" ) )
{
item = new QgsGeoPackageCollectionItem( parentItem, name, path );
}
else if ( numLayers > 1 || sOgrSupportedDbDriverNames.contains( driverName ) )
{
item = new QgsOgrDataCollectionItem( parentItem, name, path );
}
else
{
item = dataItemForLayer( parentItem, name, path, hDS.get(), 0, false, true );
}
return item;
}
QGISEXTERN QgsDataItem * dataItem( QString thePath, QgsDataItem* parentItem )
{
if ( thePath.isEmpty() )
return 0;
QgsDebugMsgLevel( "thePath: " + thePath, 2 );
// zip settings + info
QSettings settings;
QString scanZipSetting = settings.value( "/qgis/scanZipInBrowser2", "basic" ).toString();
QString vsiPrefix = QgsZipItem::vsiPrefix( thePath );
bool is_vsizip = ( vsiPrefix == "/vsizip/" );
bool is_vsigzip = ( vsiPrefix == "/vsigzip/" );
bool is_vsitar = ( vsiPrefix == "/vsitar/" );
// should we check ext. only?
// check if scanItemsInBrowser2 == extension or parent dir in scanItemsFastScanUris
// TODO - do this in dir item, but this requires a way to inform which extensions are supported by provider
// maybe a callback function or in the provider registry?
bool scanExtSetting = false;
if (( settings.value( "/qgis/scanItemsInBrowser2",
"extension" ).toString() == "extension" ) ||
( settings.value( "/qgis/scanItemsFastScanUris",
QStringList() ).toStringList().contains( parentItem->path() ) ) ||
(( is_vsizip || is_vsitar ) && parentItem && parentItem->parent() &&
settings.value( "/qgis/scanItemsFastScanUris",
QStringList() ).toStringList().contains( parentItem->parent()->path() ) ) )
{
scanExtSetting = true;
}
// get suffix, removing .gz if present
QString tmpPath = thePath; //path used for testing, not for layer creation
if ( is_vsigzip )
tmpPath.chop( 3 );
QFileInfo info( tmpPath );
QString suffix = info.suffix().toLower();
// extract basename with extension
info.setFile( thePath );
QString name = info.fileName();
QgsDebugMsgLevel( "thePath= " + thePath + " tmpPath= " + tmpPath + " name= " + name
+ " suffix= " + suffix + " vsiPrefix= " + vsiPrefix, 3 );
// allow only normal files or VSIFILE items to continue
if ( !info.isFile() && vsiPrefix == "" )
return 0;
QStringList myExtensions = fileExtensions();
// skip *.aux.xml files (GDAL auxilary metadata files),
// *.shp.xml files (ESRI metadata) and *.tif.xml files (TIFF metadata)
// unless that extension is in the list (*.xml might be though)
if ( thePath.endsWith( ".aux.xml", Qt::CaseInsensitive ) &&
!myExtensions.contains( "aux.xml" ) )
return 0;
if ( thePath.endsWith( ".shp.xml", Qt::CaseInsensitive ) &&
!myExtensions.contains( "shp.xml" ) )
return 0;
if ( thePath.endsWith( ".tif.xml", Qt::CaseInsensitive ) &&
!myExtensions.contains( "tif.xml" ) )
return 0;
// We have to filter by extensions, otherwise e.g. all Shapefile files are displayed
// because OGR drive can open also .dbf, .shx.
if ( myExtensions.indexOf( suffix ) < 0 )
{
bool matches = false;
foreach ( QString wildcard, wildcards() )
{
QRegExp rx( wildcard, Qt::CaseInsensitive, QRegExp::Wildcard );
if ( rx.exactMatch( info.fileName() ) )
{
matches = true;
break;
}
}