def _read_header(self):
prolog = binread(self.fd, ">iiiiii")
# only the first field is used and has a fixed value
if prolog[0] != self.SHP_FILE_CODE:
print "warning: wrong file code"
self.shp_filelength = binread_first(self.fd, ">i")
self.shp_version = binread_first(self.fd, "<i")
self.shp_shape_type = binread_first(self.fd, "<i")
self.shp_bbox_xmin, self.shp_bbox_ymin = binread(self.fd, "<dd")
self.shp_bbox_xmax, self.shp_bbox_ymax = binread(self.fd, "<dd")
self.shp_bbox_zmin, self.shp_bbox_zmax = binread(self.fd, "<dd")
self.shp_bbox_mmin, self.shp_bbox_mmax = binread(self.fd, "<dd")
def _read_header(self):
prolog = binread(self.fd, ">iiiiii")
# only the first field is used and has a fixed value
if prolog[0] != self.SHP_FILE_CODE:
print "warning: wrong file code"
self.shp_filelength = binread_first(self.fd, ">i")
self.shp_version = binread_first(self.fd, "<i")
self.shp_shape_type = binread_first(self.fd, "<i")
self.shp_bbox_xmin, self.shp_bbox_ymin = binread(self.fd, "<dd")
self.shp_bbox_xmax, self.shp_bbox_ymax = binread(self.fd, "<dd")
self.shp_bbox_zmin, self.shp_bbox_zmax = binread(self.fd, "<dd")
self.shp_bbox_mmin, self.shp_bbox_mmax = binread(self.fd, "<dd")
def get_shapes(self):
bytelength = self.shp_filelength * 2
while self.fd.tell() < bytelength:
r_id = binread_first(self.fd, ">i")
r_content_length = binread_first(self.fd, ">i")
r_shape = binread_first(self.fd, "<i")
klass = shapes.type_to_class(r_shape)(r_id)
klass.read(self.fd)
yield klass
if self.fd.tell() != bytelength:
sys.stderr.write("warning: inexeact file end (differs from what header says)\n")
# reposition fp just right after the header so we can start reading
# again if we want to
self.fd.seek(self.SHP_HEADER_SIZE)
return
def get_shapes(self):
bytelength = self.shp_filelength * 2
while self.fd.tell() < bytelength:
r_id = binread_first(self.fd, ">i")
r_content_length = binread_first(self.fd, ">i")
r_shape = binread_first(self.fd, "<i")
klass = shapes.type_to_class(r_shape)(r_id)
klass.read(self.fd)
yield klass
if self.fd.tell() != bytelength:
sys.stderr.write(
"warning: inexeact file end (differs from what header says)\n")
# reposition fp just right after the header so we can start reading
# again if we want to
self.fd.seek(self.SHP_HEADER_SIZE)
return
