release_ds = void_output(lgdal.OGRReleaseDataSource, [c_void_p]) get_ds_name = const_string_output(lgdal.OGR_DS_GetName, [c_void_p]) get_layer = voidptr_output(lgdal.OGR_DS_GetLayer, [c_void_p, c_int]) get_layer_by_name = voidptr_output(lgdal.OGR_DS_GetLayerByName, [c_void_p, c_char_p]) get_layer_count = int_output(lgdal.OGR_DS_GetLayerCount, [c_void_p]) ### Layer Routines ### get_extent = void_output(lgdal.OGR_L_GetExtent, [c_void_p, POINTER(OGREnvelope), c_int]) get_feature = voidptr_output(lgdal.OGR_L_GetFeature, [c_void_p, c_long]) get_feature_count = int_output(lgdal.OGR_L_GetFeatureCount, [c_void_p, c_int]) get_layer_defn = voidptr_output(lgdal.OGR_L_GetLayerDefn, [c_void_p]) get_layer_srs = srs_output(lgdal.OGR_L_GetSpatialRef, [c_void_p]) get_next_feature = voidptr_output(lgdal.OGR_L_GetNextFeature, [c_void_p]) reset_reading = void_output(lgdal.OGR_L_ResetReading, [c_void_p], errcheck=False) test_capability = int_output(lgdal.OGR_L_TestCapability, [c_void_p, c_char_p]) get_spatial_filter = geom_output(lgdal.OGR_L_GetSpatialFilter, [c_void_p]) set_spatial_filter = void_output(lgdal.OGR_L_SetSpatialFilter, [c_void_p, c_void_p], errcheck=False) set_spatial_filter_rect = void_output(lgdal.OGR_L_SetSpatialFilterRect, [c_void_p, c_double, c_double, c_double, c_double], errcheck=False) ### Feature Definition Routines ### get_fd_geom_type = int_output(lgdal.OGR_FD_GetGeomType, [c_void_p]) get_fd_name = const_string_output(lgdal.OGR_FD_GetName, [c_void_p]) get_feat_name = const_string_output(lgdal.OGR_FD_GetName, [c_void_p]) get_field_count = int_output(lgdal.OGR_FD_GetFieldCount, [c_void_p]) get_field_defn = voidptr_output(lgdal.OGR_FD_GetFieldDefn, [c_void_p, c_int]) ### Feature Routines ### clone_feature = voidptr_output(lgdal.OGR_F_Clone, [c_void_p]) destroy_feature = void_output(lgdal.OGR_F_Destroy, [c_void_p], errcheck=False) feature_equal = int_output(lgdal.OGR_F_Equal, [c_void_p, c_void_p]) get_feat_geom_ref = geom_output(lgdal.OGR_F_GetGeometryRef, [c_void_p])
def pnt_func(f):
"For accessing point information."
return double_output(f, [c_void_p, c_int])
def topology_func(f):
f.argtypes = [c_void_p, c_void_p]
f.restype = c_int
f.errchck = bool
return f
# ### OGR_G ctypes function prototypes ###
# GeoJSON routines.
from_json = geom_output(lgdal.OGR_G_CreateGeometryFromJson, [c_char_p])
to_json = string_output(lgdal.OGR_G_ExportToJson, [c_void_p],
str_result=True,
decoding='ascii')
to_kml = string_output(lgdal.OGR_G_ExportToKML, [c_void_p, c_char_p],
str_result=True,
decoding='ascii')
# GetX, GetY, GetZ all return doubles.
getx = pnt_func(lgdal.OGR_G_GetX)
gety = pnt_func(lgdal.OGR_G_GetY)
getz = pnt_func(lgdal.OGR_G_GetZ)
# Geometry creation routines.
from_wkb = geom_output(
lgdal.OGR_G_CreateFromWkb,
def pnt_func(f):
"For accessing point information."
return double_output(f, [c_void_p, c_int])
def topology_func(f):
f.argtypes = [c_void_p, c_void_p]
f.restype = c_int
f.errchck = check_bool
return f
### OGR_G ctypes function prototypes ###
# GeoJSON routines, if supported.
if GEOJSON:
from_json = geom_output(lgdal.OGR_G_CreateGeometryFromJson, [c_char_p])
to_json = string_output(lgdal.OGR_G_ExportToJson, [c_void_p], str_result=True)
to_kml = string_output(lgdal.OGR_G_ExportToKML, [c_void_p, c_char_p], str_result=True)
else:
from_json = False
to_json = False
to_kml = False
# GetX, GetY, GetZ all return doubles.
getx = pnt_func(lgdal.OGR_G_GetX)
gety = pnt_func(lgdal.OGR_G_GetY)
getz = pnt_func(lgdal.OGR_G_GetZ)
# Geometry creation routines.
from_wkb = geom_output(lgdal.OGR_G_CreateFromWkb, [c_char_p, c_void_p, POINTER(c_void_p), c_int], offset=-2)
from_wkt = geom_output(lgdal.OGR_G_CreateFromWkt, [POINTER(c_char_p), c_void_p, POINTER(c_void_p)], offset=-1)
release_ds = void_output(lgdal.OGRReleaseDataSource, [c_void_p])
get_ds_name = const_string_output(lgdal.OGR_DS_GetName, [c_void_p])
get_layer = voidptr_output(lgdal.OGR_DS_GetLayer, [c_void_p, c_int])
get_layer_by_name = voidptr_output(lgdal.OGR_DS_GetLayerByName, [c_void_p, c_char_p])
get_layer_count = int_output(lgdal.OGR_DS_GetLayerCount, [c_void_p])
# Layer Routines
get_extent = void_output(lgdal.OGR_L_GetExtent, [c_void_p, POINTER(OGREnvelope), c_int])
get_feature = voidptr_output(lgdal.OGR_L_GetFeature, [c_void_p, c_long])
get_feature_count = int_output(lgdal.OGR_L_GetFeatureCount, [c_void_p, c_int])
get_layer_defn = voidptr_output(lgdal.OGR_L_GetLayerDefn, [c_void_p])
get_layer_srs = srs_output(lgdal.OGR_L_GetSpatialRef, [c_void_p])
get_next_feature = voidptr_output(lgdal.OGR_L_GetNextFeature, [c_void_p])
reset_reading = void_output(lgdal.OGR_L_ResetReading, [c_void_p], errcheck=False)
test_capability = int_output(lgdal.OGR_L_TestCapability, [c_void_p, c_char_p])
get_spatial_filter = geom_output(lgdal.OGR_L_GetSpatialFilter, [c_void_p])
set_spatial_filter = void_output(
lgdal.OGR_L_SetSpatialFilter, [c_void_p, c_void_p], errcheck=False
)
set_spatial_filter_rect = void_output(
lgdal.OGR_L_SetSpatialFilterRect,
[c_void_p, c_double, c_double, c_double, c_double],
errcheck=False,
)
# Feature Definition Routines
get_fd_geom_type = int_output(lgdal.OGR_FD_GetGeomType, [c_void_p])
get_fd_name = const_string_output(lgdal.OGR_FD_GetName, [c_void_p])
get_feat_name = const_string_output(lgdal.OGR_FD_GetName, [c_void_p])
get_field_count = int_output(lgdal.OGR_FD_GetFieldCount, [c_void_p])
get_field_defn = voidptr_output(lgdal.OGR_FD_GetFieldDefn, [c_void_p, c_int])
"""
This module houses the ctypes function prototypes for OGR DataSource
related data structures. OGR_Dr_*, OGR_DS_*, OGR_L_*, OGR_F_*,
OGR_Fld_* routines are relevant here.
"""
from ctypes import POINTER, c_char_p, c_double, c_int, c_long, c_void_p
from django.contrib.gis.gdal.envelope import OGREnvelope
from django.contrib.gis.gdal.libgdal import GDAL_VERSION, lgdal
from django.contrib.gis.gdal.prototypes.generation import (
const_string_output, double_output, geom_output, int64_output, int_output,
srs_output, void_output, voidptr_output,
)
c_int_p = POINTER(c_int) # shortcut type
# Driver Routines
register_all = void_output(lgdal.OGRRegisterAll, [], errcheck=False)
cleanup_all = void_output(lgdal.OGRCleanupAll, [], errcheck=False)
get_driver = voidptr_output(lgdal.OGRGetDriver, [c_int])
get_driver_by_name = voidptr_output(lgdal.OGRGetDriverByName, [c_char_p], errcheck=False)
get_driver_count = int_output(lgdal.OGRGetDriverCount, [])
get_driver_name = const_string_output(lgdal.OGR_Dr_GetName, [c_void_p], decoding='ascii')
# DataSource
open_ds = voidptr_output(lgdal.OGROpen, [c_char_p, c_int, POINTER(c_void_p)])
destroy_ds = void_output(lgdal.OGR_DS_Destroy, [c_void_p], errcheck=False)
release_ds = void_output(lgdal.OGRReleaseDataSource, [c_void_p])
get_ds_name = const_string_output(lgdal.OGR_DS_GetName, [c_void_p])
get_layer = voidptr_output(lgdal.OGR_DS_GetLayer, [c_void_p, c_int])
get_layer_by_name = voidptr_output(lgdal.OGR_DS_GetLayerByName, [c_void_p, c_char_p])
get_layer_count = int_output(lgdal.OGR_DS_GetLayerCount, [c_void_p])
# Layer Routines
get_extent = void_output(lgdal.OGR_L_GetExtent, [c_void_p, POINTER(OGREnvelope), c_int])
get_next_feature = voidptr_output(lgdal.OGR_L_GetNextFeature, [c_void_p]) reset_reading = void_output(lgdal.OGR_L_ResetReading, [c_void_p], errcheck=False) test_capability = int_output(lgdal.OGR_L_TestCapability, [c_void_p, c_char_p]) ### Feature Definition Routines ### get_fd_geom_type = int_output(lgdal.OGR_FD_GetGeomType, [c_void_p]) get_fd_name = const_string_output(lgdal.OGR_FD_GetName, [c_void_p]) get_feat_name = const_string_output(lgdal.OGR_FD_GetName, [c_void_p]) get_field_count = int_output(lgdal.OGR_FD_GetFieldCount, [c_void_p]) get_field_defn = voidptr_output(lgdal.OGR_FD_GetFieldDefn, [c_void_p, c_int]) ### Feature Routines ### clone_feature = voidptr_output(lgdal.OGR_F_Clone, [c_void_p]) destroy_feature = void_output(lgdal.OGR_F_Destroy, [c_void_p], errcheck=False) feature_equal = int_output(lgdal.OGR_F_Equal, [c_void_p, c_void_p]) get_feat_geom_ref = geom_output(lgdal.OGR_F_GetGeometryRef, [c_void_p]) get_feat_field_count = int_output(lgdal.OGR_F_GetFieldCount, [c_void_p]) get_feat_field_defn = voidptr_output(lgdal.OGR_F_GetFieldDefnRef, [c_void_p, c_int]) get_fid = int_output(lgdal.OGR_F_GetFID, [c_void_p]) get_field_as_datetime = int_output(lgdal.OGR_F_GetFieldAsDateTime, [c_void_p, c_int, c_int_p, c_int_p, c_int_p, c_int_p, c_int_p, c_int_p]) get_field_as_double = double_output(lgdal.OGR_F_GetFieldAsDouble, [c_void_p, c_int]) get_field_as_integer = int_output(lgdal.OGR_F_GetFieldAsInteger, [c_void_p, c_int]) get_field_as_string = const_string_output(lgdal.OGR_F_GetFieldAsString, [c_void_p, c_int]) get_field_index = int_output(lgdal.OGR_F_GetFieldIndex, [c_void_p, c_char_p]) ### Field Routines ### get_field_name = const_string_output(lgdal.OGR_Fld_GetNameRef, [c_void_p]) get_field_precision = int_output(lgdal.OGR_Fld_GetPrecision, [c_void_p]) get_field_type = int_output(lgdal.OGR_Fld_GetType, [c_void_p]) get_field_type_name = const_string_output(lgdal.OGR_GetFieldTypeName, [c_int]) get_field_width = int_output(lgdal.OGR_Fld_GetWidth, [c_void_p])
lgdal.OGR_L_SetSpatialFilterRect,
[c_void_p, c_double, c_double, c_double, c_double], errcheck=False
)
# Feature Definition Routines
get_fd_geom_type = int_output(lgdal.OGR_FD_GetGeomType, [c_void_p])
get_fd_name = const_string_output(lgdal.OGR_FD_GetName, [c_void_p])
get_feat_name = const_string_output(lgdal.OGR_FD_GetName, [c_void_p])
get_field_count = int_output(lgdal.OGR_FD_GetFieldCount, [c_void_p])
get_field_defn = voidptr_output(lgdal.OGR_FD_GetFieldDefn, [c_void_p, c_int])
# Feature Routines
clone_feature = voidptr_output(lgdal.OGR_F_Clone, [c_void_p])
destroy_feature = void_output(lgdal.OGR_F_Destroy, [c_void_p], errcheck=False)
feature_equal = int_output(lgdal.OGR_F_Equal, [c_void_p, c_void_p])
get_feat_geom_ref = geom_output(lgdal.OGR_F_GetGeometryRef, [c_void_p])
get_feat_field_count = int_output(lgdal.OGR_F_GetFieldCount, [c_void_p])
get_feat_field_defn = voidptr_output(lgdal.OGR_F_GetFieldDefnRef, [c_void_p, c_int])
get_fid = int_output(lgdal.OGR_F_GetFID, [c_void_p])
get_field_as_datetime = int_output(
lgdal.OGR_F_GetFieldAsDateTime,
[c_void_p, c_int, c_int_p, c_int_p, c_int_p, c_int_p, c_int_p, c_int_p]
)
get_field_as_double = double_output(lgdal.OGR_F_GetFieldAsDouble, [c_void_p, c_int])
get_field_as_integer = int_output(lgdal.OGR_F_GetFieldAsInteger, [c_void_p, c_int])
get_field_as_integer64 = int64_output(lgdal.OGR_F_GetFieldAsInteger64, [c_void_p, c_int])
if GDAL_VERSION >= (2, 2):
is_field_set = bool_output(lgdal.OGR_F_IsFieldSetAndNotNull, [c_void_p, c_int])
else:
is_field_set = bool_output(lgdal.OGR_F_IsFieldSet, [c_void_p, c_int])
get_field_as_string = const_string_output(lgdal.OGR_F_GetFieldAsString, [c_void_p, c_int])
