"""

 Description: Grid configuration parser.

 Author: Eugen Sawin <sawine@me73.com>

 """

 import ConfigParser

 from grid import Grid

 meta_section = "meta"

 data_section = "cells"

 def dumpGrid(grid, filename):

 	config = ConfigParser.RawConfigParser()

 	config.add_section(meta_section)

 	config.set(meta_section, 'min x', grid.minx)

 	config.set(meta_section, 'max x', grid.maxx)

 	config.set(meta_section, 'min y', grid.miny)

 	config.set(meta_section, 'max y', grid.maxy)

 	config.set(meta_section, 'cell no', len(grid))	

 	config.add_section(data_section)

 	config.set(data_section, "cells", ";".join([str(pos) for pos in grid.cells.iterkeys()]))

 	with open(filename, 'wb') as configfile:

 		config.write(configfile)

 def loadGrid(filename):

 	config = ConfigParser.RawConfigParser()

 	config.read(filename)

 	grid = Grid()

 	grid.minx = config.getint(meta_section, "min x")

 	grid.maxx = config.getint(meta_section, "max x")

 	grid.miny = config.getint(meta_section, "min y")

 	grid.maxy = config.getint(meta_section, "max y")

 	cells = config.get(data_section, "cells")

 	for cell in cells.split(";"):

 		cell = [int(cell.strip("(),")) for cell in cell.split()]

 		grid.cells[(cell[0], cell[1])] = 1

 	return grid