ó i4Vdc@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 DataSourcecBskeZdZeedd„Zd„Zd„Zd„Zd„Zd„Z e d„ƒZ e d „ƒZ RS( 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((sp/var/www/html/phendo-backend/phendo_python/env/lib/python2.7/site-packages/django/contrib/gis/gdal/datasource.pyt__init__7s$     ( $  cCs&|jr"tr"tj|jƒndS(s#Destroys this DataStructure object.N(t_ptrRt destroy_ds(R((sp/var/www/html/phendo-backend/phendo_python/env/lib/python2.7/site-packages/django/contrib/gis/gdal/datasource.pyt__del__Xsccs'x t|jƒD]}||VqWdS(s6Allows for iteration over the layers in a data source.N(R t layer_count(Rti((sp/var/www/html/phendo-backend/phendo_python/env/lib/python2.7/site-packages/django/contrib/gis/gdal/datasource.pyt__iter__]scCs½t|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_layerRt TypeErrorRR(Rtindextl((sp/var/www/html/phendo-backend/phendo_python/env/lib/python2.7/site-packages/django/contrib/gis/gdal/datasource.pyt __getitem__bscCs|jS(s4Returns the number of layers within the data source.(R(R((sp/var/www/html/phendo-backend/phendo_python/env/lib/python2.7/site-packages/django/contrib/gis/gdal/datasource.pyt__len__pscCsd|jt|jƒfS(s3Returns OGR GetName and Driver for the Data Source.s%s (%s)(tnametstrR(R((sp/var/www/html/phendo-backend/phendo_python/env/lib/python2.7/site-packages/django/contrib/gis/gdal/datasource.pyt__str__tscCstj|jƒS(s0Returns the number of layers in the data source.(Rtget_layer_countR(R((sp/var/www/html/phendo-backend/phendo_python/env/lib/python2.7/site-packages/django/contrib/gis/gdal/datasource.pyRxscCs(tj|jƒ}t||jdtƒS(s$Returns the name of the data source.t strings_only(Rt get_ds_nameRR R tTrue(RR*((sp/var/www/html/phendo-backend/phendo_python/env/lib/python2.7/site-packages/django/contrib/gis/gdal/datasource.pyR*}s( t__name__t __module__t__doc__tFalseRRR!R(R)R,tpropertyRR*(((sp/var/www/html/phendo-backend/phendo_python/env/lib/python2.7/site-packages/django/contrib/gis/gdal/datasource.pyR 4s!     N(R3tctypesRtdjango.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 (((sp/var/www/html/phendo-backend/phendo_python/env/lib/python2.7/site-packages/django/contrib/gis/gdal/datasource.pyt#s