Python hex_regex.match方法代码示例

# 需要导入模块: from django.contrib.gis.geometry.regex import hex_regex [as 别名]
# 或者: from django.contrib.gis.geometry.regex.hex_regex import match [as 别名]
def relate_pattern(self, other, pattern):
        """
        Returns true if the elements in the DE-9IM intersection matrix for the
        two Geometries match the elements in pattern.
        """
        if not isinstance(pattern, six.string_types) or len(pattern) > 9:
            raise GEOSException('invalid intersection matrix pattern')
        return capi.geos_relatepattern(self.ptr, other.ptr, force_bytes(pattern)) 

# 需要导入模块: from django.contrib.gis.geometry.regex import hex_regex [as 别名]
# 或者: from django.contrib.gis.geometry.regex.hex_regex import match [as 别名]
def __init__(self, geom_input, srs=None):
        "Initializes Geometry on either WKT or an OGR pointer as input."

        str_instance = isinstance(geom_input, six.string_types)

        # If HEX, unpack input to a binary buffer.
        if str_instance and hex_regex.match(geom_input):
            geom_input = six.memoryview(a2b_hex(geom_input.upper().encode()))
            str_instance = False

        # Constructing the geometry,
        if str_instance:
            wkt_m = wkt_regex.match(geom_input)
            json_m = json_regex.match(geom_input)
            if wkt_m:
                if wkt_m.group('srid'):
                    # If there's EWKT, set the SRS w/value of the SRID.
                    srs = int(wkt_m.group('srid'))
                if wkt_m.group('type').upper() == 'LINEARRING':
                    # OGR_G_CreateFromWkt doesn't work with LINEARRING WKT.
                    #  See http://trac.osgeo.org/gdal/ticket/1992.
                    g = capi.create_geom(OGRGeomType(wkt_m.group('type')).num)
                    capi.import_wkt(g, byref(c_char_p(wkt_m.group('wkt').encode())))
                else:
                    g = capi.from_wkt(byref(c_char_p(wkt_m.group('wkt').encode())), None, byref(c_void_p()))
            elif json_m:
                g = capi.from_json(geom_input.encode())
            else:
                # Seeing if the input is a valid short-hand string
                # (e.g., 'Point', 'POLYGON').
                OGRGeomType(geom_input)
                g = capi.create_geom(OGRGeomType(geom_input).num)
        elif isinstance(geom_input, six.memoryview):
            # WKB was passed in
            g = capi.from_wkb(bytes(geom_input), None, byref(c_void_p()), len(geom_input))
        elif isinstance(geom_input, OGRGeomType):
            # OGRGeomType was passed in, an empty geometry will be created.
            g = capi.create_geom(geom_input.num)
        elif isinstance(geom_input, self.ptr_type):
            # OGR pointer (c_void_p) was the input.
            g = geom_input
        else:
            raise GDALException('Invalid input type for OGR Geometry construction: %s' % type(geom_input))

        # Now checking the Geometry pointer before finishing initialization
        # by setting the pointer for the object.
        if not g:
            raise GDALException('Cannot create OGR Geometry from input: %s' % str(geom_input))
        self.ptr = g

        # Assigning the SpatialReference object to the geometry, if valid.
        if srs:
            self.srs = srs

        # Setting the class depending upon the OGR Geometry Type
        self.__class__ = GEO_CLASSES[self.geom_type.num] 

# 需要导入模块: from django.contrib.gis.geometry.regex import hex_regex [as 别名]
# 或者: from django.contrib.gis.geometry.regex.hex_regex import match [as 别名]
def __init__(self, geo_input, srid=None):
        """
        The base constructor for GEOS geometry objects, and may take the
        following inputs:

         * strings:
            - WKT
            - HEXEWKB (a PostGIS-specific canonical form)
            - GeoJSON (requires GDAL)
         * buffer:
            - WKB

        The `srid` keyword is used to specify the Source Reference Identifier
        (SRID) number for this Geometry.  If not set, the SRID will be None.
        """
        if isinstance(geo_input, bytes):
            geo_input = force_text(geo_input)
        if isinstance(geo_input, six.string_types):
            wkt_m = wkt_regex.match(geo_input)
            if wkt_m:
                # Handling WKT input.
                if wkt_m.group('srid'):
                    srid = int(wkt_m.group('srid'))
                g = wkt_r().read(force_bytes(wkt_m.group('wkt')))
            elif hex_regex.match(geo_input):
                # Handling HEXEWKB input.
                g = wkb_r().read(force_bytes(geo_input))
            elif json_regex.match(geo_input):
                # Handling GeoJSON input.
                if not gdal.HAS_GDAL:
                    raise ValueError('Initializing geometry from JSON input requires GDAL.')
                g = wkb_r().read(gdal.OGRGeometry(geo_input).wkb)
            else:
                raise ValueError('String or unicode input unrecognized as WKT EWKT, and HEXEWKB.')
        elif isinstance(geo_input, GEOM_PTR):
            # When the input is a pointer to a geometry (GEOM_PTR).
            g = geo_input
        elif isinstance(geo_input, six.memoryview):
            # When the input is a buffer (WKB).
            g = wkb_r().read(geo_input)
        elif isinstance(geo_input, GEOSGeometry):
            g = capi.geom_clone(geo_input.ptr)
        else:
            # Invalid geometry type.
            raise TypeError('Improper geometry input type: %s' % str(type(geo_input)))

        if g:
            # Setting the pointer object with a valid pointer.
            self.ptr = g
        else:
            raise GEOSException('Could not initialize GEOS Geometry with given input.')

        # Post-initialization setup.
        self._post_init(srid) 

# 需要导入模块: from django.contrib.gis.geometry.regex import hex_regex [as 别名]
# 或者: from django.contrib.gis.geometry.regex.hex_regex import match [as 别名]
def transform(self, ct, clone=False):
        """
        Requires GDAL. Transforms the geometry according to the given
        transformation object, which may be an integer SRID, and WKT or
        PROJ.4 string. By default, the geometry is transformed in-place and
        nothing is returned. However if the `clone` keyword is set, then this
        geometry will not be modified and a transformed clone will be returned
        instead.
        """
        srid = self.srid

        if ct == srid:
            # short-circuit where source & dest SRIDs match
            if clone:
                return self.clone()
            else:
                return

        if (srid is None) or (srid < 0):
            raise GEOSException("Calling transform() with no SRID set is not supported")

        if not gdal.HAS_GDAL:
            raise GEOSException("GDAL library is not available to transform() geometry.")

        # Creating an OGR Geometry, which is then transformed.
        g = self.ogr
        g.transform(ct)
        # Getting a new GEOS pointer
        ptr = wkb_r().read(g.wkb)
        if clone:
            # User wants a cloned transformed geometry returned.
            return GEOSGeometry(ptr, srid=g.srid)
        if ptr:
            # Reassigning pointer, and performing post-initialization setup
            # again due to the reassignment.
            capi.destroy_geom(self.ptr)
            self.ptr = ptr
            self._post_init(g.srid)
        else:
            raise GEOSException('Transformed WKB was invalid.')

    # #### Topology Routines #### 

# 需要导入模块: from django.contrib.gis.geometry.regex import hex_regex [as 别名]
# 或者: from django.contrib.gis.geometry.regex.hex_regex import match [as 别名]
def transform(self, ct, clone=False):
        """
        Requires GDAL. Transforms the geometry according to the given
        transformation object, which may be an integer SRID, and WKT or
        PROJ.4 string. By default, the geometry is transformed in-place and
        nothing is returned. However if the `clone` keyword is set, then this
        geometry will not be modified and a transformed clone will be returned
        instead.
        """
        srid = self.srid

        if ct == srid:
            # short-circuit where source & dest SRIDs match
            if clone:
                return self.clone()
            else:
                return

        if not gdal.HAS_GDAL:
            raise GEOSException("GDAL library is not available to transform() geometry.")

        if isinstance(ct, gdal.CoordTransform):
            # We don't care about SRID because CoordTransform presupposes
            # source SRS.
            srid = None
        elif srid is None or srid < 0:
            raise GEOSException("Calling transform() with no SRID set is not supported")

        # Creating an OGR Geometry, which is then transformed.
        g = gdal.OGRGeometry(self.wkb, srid)
        g.transform(ct)
        # Getting a new GEOS pointer
        ptr = wkb_r().read(g.wkb)
        if clone:
            # User wants a cloned transformed geometry returned.
            return GEOSGeometry(ptr, srid=g.srid)
        if ptr:
            # Reassigning pointer, and performing post-initialization setup
            # again due to the reassignment.
            capi.destroy_geom(self.ptr)
            self.ptr = ptr
            self._post_init(g.srid)
        else:
            raise GEOSException('Transformed WKB was invalid.')

    # #### Topology Routines #### 

# 需要导入模块: from django.contrib.gis.geometry.regex import hex_regex [as 别名]
# 或者: from django.contrib.gis.geometry.regex.hex_regex import match [as 别名]
def __init__(self, geom_input, srs=None):
        "Initializes Geometry on either WKT or an OGR pointer as input."

        str_instance = isinstance(geom_input, six.string_types)

        # If HEX, unpack input to a binary buffer.
        if str_instance and hex_regex.match(geom_input):
            geom_input = six.memoryview(a2b_hex(geom_input.upper().encode()))
            str_instance = False

        # Constructing the geometry,
        if str_instance:
            wkt_m = wkt_regex.match(geom_input)
            json_m = json_regex.match(geom_input)
            if wkt_m:
                if wkt_m.group('srid'):
                    # If there's EWKT, set the SRS w/value of the SRID.
                    srs = int(wkt_m.group('srid'))
                if wkt_m.group('type').upper() == 'LINEARRING':
                    # OGR_G_CreateFromWkt doesn't work with LINEARRING WKT.
                    #  See http://trac.osgeo.org/gdal/ticket/1992.
                    g = capi.create_geom(OGRGeomType(wkt_m.group('type')).num)
                    capi.import_wkt(g, byref(c_char_p(wkt_m.group('wkt').encode())))
                else:
                    g = capi.from_wkt(byref(c_char_p(wkt_m.group('wkt').encode())), None, byref(c_void_p()))
            elif json_m:
                g = capi.from_json(geom_input.encode())
            else:
                # Seeing if the input is a valid short-hand string
                # (e.g., 'Point', 'POLYGON').
                OGRGeomType(geom_input)
                g = capi.create_geom(OGRGeomType(geom_input).num)
        elif isinstance(geom_input, six.memoryview):
            # WKB was passed in
            g = self._from_wkb(geom_input)
        elif isinstance(geom_input, OGRGeomType):
            # OGRGeomType was passed in, an empty geometry will be created.
            g = capi.create_geom(geom_input.num)
        elif isinstance(geom_input, self.ptr_type):
            # OGR pointer (c_void_p) was the input.
            g = geom_input
        else:
            raise GDALException('Invalid input type for OGR Geometry construction: %s' % type(geom_input))

        # Now checking the Geometry pointer before finishing initialization
        # by setting the pointer for the object.
        if not g:
            raise GDALException('Cannot create OGR Geometry from input: %s' % str(geom_input))
        self.ptr = g

        # Assigning the SpatialReference object to the geometry, if valid.
        if srs:
            self.srs = srs

        # Setting the class depending upon the OGR Geometry Type
        self.__class__ = GEO_CLASSES[self.geom_type.num]

    # Pickle routines 

# 需要导入模块: from django.contrib.gis.geometry.regex import hex_regex [as 别名]
# 或者: from django.contrib.gis.geometry.regex.hex_regex import match [as 别名]
def __init__(self, geo_input, srid=None):
        """
        The base constructor for GEOS geometry objects, and may take the
        following inputs:

         * strings:
            - WKT
            - HEXEWKB (a PostGIS-specific canonical form)
            - GeoJSON (requires GDAL)
         * buffer:
            - WKB

        The `srid` keyword is used to specify the Source Reference Identifier
        (SRID) number for this Geometry.  If not set, the SRID will be None.
        """
        if isinstance(geo_input, bytes):
            geo_input = force_text(geo_input)
        if isinstance(geo_input, six.string_types):
            wkt_m = wkt_regex.match(geo_input)
            if wkt_m:
                # Handling WKT input.
                if wkt_m.group('srid'):
                    srid = int(wkt_m.group('srid'))
                g = wkt_r().read(force_bytes(wkt_m.group('wkt')))
            elif hex_regex.match(geo_input):
                # Handling HEXEWKB input.
                g = wkb_r().read(force_bytes(geo_input))
            elif json_regex.match(geo_input):
                # Handling GeoJSON input.
                g = wkb_r().read(gdal.OGRGeometry(geo_input).wkb)
            else:
                raise ValueError('String or unicode input unrecognized as WKT EWKT, and HEXEWKB.')
        elif isinstance(geo_input, GEOM_PTR):
            # When the input is a pointer to a geometry (GEOM_PTR).
            g = geo_input
        elif isinstance(geo_input, six.memoryview):
            # When the input is a buffer (WKB).
            g = wkb_r().read(geo_input)
        elif isinstance(geo_input, GEOSGeometry):
            g = capi.geom_clone(geo_input.ptr)
        else:
            # Invalid geometry type.
            raise TypeError('Improper geometry input type: %s' % str(type(geo_input)))

        if g:
            # Setting the pointer object with a valid pointer.
            self.ptr = g
        else:
            raise GEOSException('Could not initialize GEOS Geometry with given input.')

        # Post-initialization setup.
        self._post_init(srid) 

# 需要导入模块: from django.contrib.gis.geometry.regex import hex_regex [as 别名]
# 或者: from django.contrib.gis.geometry.regex.hex_regex import match [as 别名]
def transform(self, ct, clone=False):
        """
        Requires GDAL. Transforms the geometry according to the given
        transformation object, which may be an integer SRID, and WKT or
        PROJ.4 string. By default, the geometry is transformed in-place and
        nothing is returned. However if the `clone` keyword is set, then this
        geometry will not be modified and a transformed clone will be returned
        instead.
        """
        srid = self.srid

        if ct == srid:
            # short-circuit where source & dest SRIDs match
            if clone:
                return self.clone()
            else:
                return

        if isinstance(ct, gdal.CoordTransform):
            # We don't care about SRID because CoordTransform presupposes
            # source SRS.
            srid = None
        elif srid is None or srid < 0:
            raise GEOSException("Calling transform() with no SRID set is not supported")

        # Creating an OGR Geometry, which is then transformed.
        g = gdal.OGRGeometry(self._ogr_ptr(), srid)
        g.transform(ct)
        # Getting a new GEOS pointer
        ptr = g._geos_ptr()
        if clone:
            # User wants a cloned transformed geometry returned.
            return GEOSGeometry(ptr, srid=g.srid)
        if ptr:
            # Reassigning pointer, and performing post-initialization setup
            # again due to the reassignment.
            capi.destroy_geom(self.ptr)
            self.ptr = ptr
            self._post_init(g.srid)
        else:
            raise GEOSException('Transformed WKB was invalid.')

    # #### Topology Routines ####