convert_mif_shp.py

"""
This example converts all of the MapInfo layers in a folder into ESRI Shapefiles.
This is complicated a little by the fact that MapInfo geometries are not
homogenous, i.e. you can have different kinds of geometry (LineString, Polygon, ...)
in the same file. This approach assumes that all of the geometries have the same
type as the first feature in the layer.
"""

import os
import fiona
import copy

folder = r"D:\tmp"

# get list of files to process
filenames = os.listdir(folder)
filenames = [filename for filename in filenames if filename.lower().endswith('.mif')]

# this could be the same as the input folder...
output_folder = r"D:\tmp"

for filename in filenames:
    path_mapinfo = os.path.join(folder, filename)
    path_esri = os.path.join(output_folder, '.'.join(filename.split('.')[:-1]) + '.shp')
    print(filename)
    # open existing file for reading
    with fiona.open(path_mapinfo, 'r') as src:
        # sniff geometry type
        feature = next(src)
        geometry_type = feature['geometry']['type']
        # change driver, but leave everything else untouched
        meta = copy.deepcopy(src.meta)
        meta['driver'] = "ESRI Shapefile"
        meta['schema']['geometry'] = geometry_type
        with fiona.open(path_esri, 'w', **meta) as dst:
            for feature in src:
                assert(feature['geometry']['type'] == geometry_type)
                dst.write(feature)