ó ®â0_c@s¼dZddlmZddlmZddlmZddlmZm Z ddl m Z ddl m ZddlmZdd lmZmZdd lmZd efd „ƒYZd S(s· DataSource is a wrapper for the OGR Data Source object, which provides an interface for reading vector geometry data from many different file formats (including ESRI shapefiles). When instantiating a DataSource object, use the filename of a GDAL-supported data source. For example, a SHP file or a TIGER/Line file from the government. The ds_driver keyword is used internally when a ctypes pointer is passed in directly. Example: ds = DataSource('/home/foo/bar.shp') for layer in ds: for feature in layer: # Getting the geometry for the feature. g = feature.geom # Getting the 'description' field for the feature. desc = feature['description'] # We can also increment through all of the fields # attached to this feature. for field in feature: # Get the name of the field (e.g. 'description') nm = field.name # Get the type (integer) of the field, e.g. 0 => OFTInteger t = field.type # Returns the value the field; OFTIntegers return ints, # OFTReal returns floats, all else returns string. val = field.value iÿÿÿÿ(tbyref(tGDALBase(tDriver(t GDALExceptiont OGRIndexError(tLayer(tds(tsix(t force_bytest force_text(tranget DataSourcecBskeZdZejZeedd„Zd„Zd„Z d„Z d„Z e d„ƒZ e d„ƒZRS( s Wraps an OGR Data Source object.sutf-8cCs|rd|_n d|_||_tjƒt|tjƒr›tjƒ}y(tj t |ƒ|jt |ƒƒ}WqÞt k r—t d|ƒ‚qÞXnCt||jƒrÈt|tjƒrÈ|}nt dt |ƒƒ‚|rÿ||_t|ƒ|_nt d|ƒ‚dS(Niis%Could not open the datasource at "%s"s"Invalid data source input type: %ssInvalid data source file "%s"(t_writetencodingRtensure_registeredt isinstanceRt string_typestptr_typetcapitopen_dsRRRttypetptrtdriver(tselftds_inputt ds_drivertwriteR R((sD/tmp/pip-unpacked-wheel-BAJOf3/django/contrib/gis/gdal/datasource.pyt__init__8s$     ( $  ccs'x t|jƒD]}||VqWdS(s6Allows for iteration over the layers in a data source.N(R t layer_count(Rti((sD/tmp/pip-unpacked-wheel-BAJOf3/django/contrib/gis/gdal/datasource.pyt__iter__YscCs½t|tjƒrItj|jt|ƒƒ}|s°td|ƒ‚q°ngt|tƒrš|dkss||j kr‚tdƒ‚ntj |j |ƒ}nt dt |ƒƒ‚t||ƒS(s@Allows use of the index [] operator to get a layer at the index.s"invalid OGR Layer name given: "%s"isindex out of rangesInvalid index type: %s(RRRRtget_layer_by_nameRRRtintRt get_layert_ptrt TypeErrorRR(Rtindextlayer((sD/tmp/pip-unpacked-wheel-BAJOf3/django/contrib/gis/gdal/datasource.pyt __getitem__^scCs|jS(s4Returns the number of layers within the data source.(R(R((sD/tmp/pip-unpacked-wheel-BAJOf3/django/contrib/gis/gdal/datasource.pyt__len__lscCsd|jt|jƒfS(s3Returns OGR GetName and Driver for the Data Source.s%s (%s)(tnametstrR(R((sD/tmp/pip-unpacked-wheel-BAJOf3/django/contrib/gis/gdal/datasource.pyt__str__pscCstj|jƒS(s0Returns the number of layers in the data source.(Rtget_layer_countR"(R((sD/tmp/pip-unpacked-wheel-BAJOf3/django/contrib/gis/gdal/datasource.pyRtscCs(tj|jƒ}t||jdtƒS(s$Returns the name of the data source.t strings_only(Rt get_ds_nameR"R R tTrue(RR(((sD/tmp/pip-unpacked-wheel-BAJOf3/django/contrib/gis/gdal/datasource.pyR(ys(t__name__t __module__t__doc__Rt destroy_dst destructortFalseRRR&R'R*tpropertyRR((((sD/tmp/pip-unpacked-wheel-BAJOf3/django/contrib/gis/gdal/datasource.pyR 4s !    N(R1tctypesRtdjango.contrib.gis.gdal.baseRtdjango.contrib.gis.gdal.driverRtdjango.contrib.gis.gdal.errorRRtdjango.contrib.gis.gdal.layerRt"django.contrib.gis.gdal.prototypesRRt django.utilsRtdjango.utils.encodingRR tdjango.utils.six.movesR R (((sD/tmp/pip-unpacked-wheel-BAJOf3/django/contrib/gis/gdal/datasource.pyt#s