MapServer/src/mapscript/python/examples/shpdump.py at main · jbfrd/MapServer · GitHub

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#!/usr/bin/env python

"""

Dump the contents of the passed in Shapefile

Usage:

python shpdump.py polygon.shp

"""

import mapscript

import sys

import os

def plural(x):

"""

Returns an 's' if plural

Useful in print statements to avoid something like 'point(s)'

"""

if x > 1:

return 's'

return ''

def get_shapefile_object(sf_path):

# make sure can access .shp file, create shapefileObj

if os.access(sf_path, os.F_OK):

sf_obj = mapscript.shapefileObj(sf_path, -1)

else:

print("Can't access {}".format(sf_path))

sys.exit(2)

return sf_obj

def main(sf_path):

if not sf_path.lower().endswith(".shp"):

sf_path += ".shp"

sf_obj = get_shapefile_object(sf_path)

# create an empty Shapefile object

s_obj = mapscript.shapeObj()

# loop through each shape in the original Shapefile

for i in range(sf_obj.numshapes):

# get the object at index i

sf_obj.get(i, s_obj)

print("Shape %i has %i part%s" % (i, s_obj.numlines, plural(s_obj.numlines)))

print("Bounds (%f, %f) (%f, %f)" % (s_obj.bounds.minx, s_obj.bounds.miny, s_obj.bounds.maxx, s_obj.bounds.maxy))

# loop through parts of each shape

for j in range(s_obj.numlines):

# get the jth part of the ith object

part = s_obj.get(j)

print("Part %i has %i point%s" % (j, part.numpoints, plural(part.numpoints)))

# loop through points in each part

for k in range(part.numpoints):

# get the kth point of the jth part of the ith shape

point = part.get(k)

print("%i: %f, %f" % (k, point.x, point.y))

def usage():

"""

Display usage if program is used incorrectly

"""

print("Syntax: %s <shapefile_path>" % sys.argv[0])

sys.exit(2)

# make sure passing in filename argument

if len(sys.argv) != 2:

usage()

sf_path = sys.argv[1]

main(sf_path)

MapServer/src/mapscript/python/examples/shpdump.py at main · jbfrd/MapServer · GitHub

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