contourlines.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import os
import configparser
import shutil


def info(msg):
    print("II: " + msg)


def warn(msg):
    print("WW: " + msg)


def error(msg):
    print("EE: " + msg)


def checkprg(programmtofind, solutionhint):

    # test if an executable can be found by
    # following $PATH
    # raise message if fails and returns 1
    # on success return 0
    # search follows $PATH

    if os.system("which " + programmtofind) == 0:
        info(programmtofind + " found")
    else:
        error(programmtofind + " not found")
        print(solutionhint)


def is_there(find, solutionhint):

    # test if a file or dir can be found at a predefined place
    # raise message if fails and returns 1
    # on success return 0

    if os.path.exists(find):
        info(find + " found")
    else:
        error(find + " not found")
        print(solutionhint)


WORK_DIR = os.path.expanduser('~') + "/map_build/"

config = configparser.ConfigParser()


# create the contourlines


def create_cont():

    os.chdir(WORK_DIR)

    config.read('pygmap3.cfg')

    region = config['runtime']['region']

    cl_dir = "gps_ready/zipped/" + region + "/"
    cltemp_dir = "cl_temp/"

    for dir in [cltemp_dir, cl_dir]:
        if not os.path.exists(dir):
            os.makedirs(dir)

    path = cltemp_dir
    for file in os.listdir(path):
        if os.path.isfile(os.path.join(path, file)):
            os.remove(os.path.join(path, file))

    if not os.path.exists(cl_dir + region +
                          "_contourlines_gmapsupp.img.zip"):
        hint = "Install phyghtmap to create contourlines if needed"
        checkprg("phyghtmap", hint)

        if not os.path.exists("styles/contourlines_style/lines"):
            error("No contourlines_style found")
            quit()

        if config.has_option('maxnodes', region):
            maxnodes = config['maxnodes'][region]
        else:
            maxnodes = config['maxnodes']['default']

        # use phyghtmap to get the raw-data from the internet,
        # downloaded files will be stored for later builds

        command_line = ("phyghtmap --source=view1,view3,srtm1"
                        + " --start-node-id=1 "
                        + " --start-way-id=1 "
                        + " --max-nodes-per-tile="
                        + maxnodes
                        + " --max-nodes-per-way=250 "
                        + " --jobs=4 "
                        + " --o5m "
                        + " --no-zero-contour "
                        + " -s 50 "
                        + " -c 500,100 "
                        + " --polygon=poly/" + region + ".poly "
                        + " -o " + cltemp_dir + region)

        if config.has_option('runtime', 'verbose'):
            print()
            info(command_line)
            print()

        os.system(command_line)

        # Java HEAP, RAM oder Mode

        if config['java']['agh'] == "1":
            heap = " -XX:+AggressiveHeap "
        else:
            heap = (config['java']['xmx'] + " " + config['java']['xms'])

        # contourlines-build with mkgmap

        os.chdir(cltemp_dir)

        mkgmap = WORK_DIR + config['mkgmap']['rev'] + "/mkgmap.jar "

        command_line = ("java -ea "
                        + heap
                        + " -jar " + mkgmap
                        + " --max-jobs "
                        + " --read-config="
                        + WORK_DIR + "styles/contourlines_style/options"
                        + " --style-file="
                        + WORK_DIR + "styles/contourlines_style"
                        + " --mapname="
                        + config[region]['mapid'] + "8001"
                        + " --description="
                        + region + "_contourlines "
                        + " --family-name=Contourlines"
                        + " --draw-priority="
                        + config['contourlines']['draw-priority']
                        + " --gmapsupp "
                        + " *.o5m ")

        if config.has_option('runtime', 'verbose'):
            print()
            info(command_line)
            print()

        os.system(command_line)

        import zipfile

        img = region + "_contourlines_gmapsupp.img"
        shutil.move("gmapsupp.img", img)
        zip_img = img + ".zip"
        my_zip_img = zipfile.ZipFile(zip_img, 'w', allowZip64=True)
        my_zip_img.write(img, compress_type=zipfile.ZIP_DEFLATED)
        my_zip_img.close()

        if os.path.exists(zip_img):
            os.remove(img)

        os.chdir(WORK_DIR)
        file = "_contourlines_gmapsupp.img.zip"
        shutil.move(cltemp_dir + region + file, cl_dir + region + file)