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    <g=                     @   sp   d Z ddlmZ ddlmZ ddlmZ ddlmZ ddl	m
Z
 ddlmZ ddlmZmZ G d	d
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eZdS )a  
 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
    )Path)GDALBase)Driver)GDALException)Layer)ds)force_bytes	force_strc                   @   sP   e Zd ZdZejZdddZdd Zdd	 Z	d
d Z
edd Zedd ZdS )
DataSourcez Wraps an OGR Data Source object.Futf-8c                 C   s   |rt jnt j| _|| _t  t|tt	fr6zt 
t|| jt jB d d d }W n$ ty5   td| w t|| jrEt|tjrE|}ntdt| |r^|| _t |}t|| _d S td| )Nz%Could not open the datasource at "%s"z"Invalid data source input type: %szInvalid data source file "%s")capiGDAL_OF_UPDATEGDAL_OF_READONLY_writeencodingr   ensure_registered
isinstancestrr   open_dsr   GDAL_OF_VECTORr   ptr_typetypeptrget_dataset_driverdriver)selfds_input	ds_driverwriter   r   r    r   U/var/www/html/venv/lib/python3.10/site-packages/django/contrib/gis/gdal/datasource.py__init__7   s2   

zDataSource.__init__c                 C   s   t |trzt| jt|}W n5 ty   td| w t |tr>d|  kr.| j	k r8n nt
| j|}ntd| tdt| t|| S )z@Allows use of the index [] operator to get a layer at the index.z!Invalid OGR layer name given: %s.r   z=Index out of range when accessing layers in a datasource: %s.zInvalid index type: %s)r   r   r   get_layer_by_namer   r   r   
IndexErrorintlayer_count	get_layer_ptr	TypeErrorr   r   )r   indexlayerr   r   r    __getitem__\   s    


zDataSource.__getitem__c                 C   s   | j S )z3Return the number of layers within the data source.)r%   r   r   r   r    __len__o   s   zDataSource.__len__c                 C   s   d| j | jf S )z2Return OGR GetName and Driver for the Data Source.z%s (%s))namer   r,   r   r   r    __str__s   s   zDataSource.__str__c                 C   s   t | jS )z/Return the number of layers in the data source.)r   get_layer_countr'   r,   r   r   r    r%   w   s   zDataSource.layer_countc                 C   s   t | j}t|| jddS )z#Return the name of the data source.T)strings_only)r   get_ds_namer'   r	   r   )r   r.   r   r   r    r.   |   s   zDataSource.nameN)FFr   )__name__
__module____qualname____doc__r   
destroy_ds
destructorr!   r+   r-   r/   propertyr%   r.   r   r   r   r    r
   3   s    
%
r
   N)r6   pathlibr   django.contrib.gis.gdal.baser   django.contrib.gis.gdal.driverr   django.contrib.gis.gdal.errorr   django.contrib.gis.gdal.layerr   "django.contrib.gis.gdal.prototypesr   r   django.utils.encodingr   r	   r
   r   r   r   r    <module>   s    $