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import argparse
import json
import xml.etree.ElementTree as ET
from kml_utils import add_placemark, add_polygon, new_document, write_kml
def geojson_to_kml(geojson: dict) -> ET.Element:
"""Convert a GeoJSON FeatureCollection into a KML tree.
Only MultiPolygon features are supported; other geometry types are skipped.
Args:
geojson (dict): Parsed GeoJSON FeatureCollection.
Returns:
ET.Element: The root <kml> element.
"""
root, document = new_document(geojson.get("name", "Unnamed"))
for feature in geojson.get("features", []):
geometry_type = feature["geometry"]["type"]
if geometry_type != "MultiPolygon":
print(f"Skipping feature with unsupported geometry type: {geometry_type}")
continue
placemark = add_placemark(document)
for ring in feature["geometry"]["coordinates"][0]:
add_polygon(placemark, ring)
return root
def main():
parser = argparse.ArgumentParser(description="Convert GeoJSON to KML")
parser.add_argument("input_file", help="Path to the input GeoJSON file")
parser.add_argument("-o", "--output", help="Path to the output KML file")
args = parser.parse_args()
with open(args.input_file, "r") as geojson_file:
geojson = json.load(geojson_file)
output_file = args.output or args.input_file.rsplit(".", 1)[0] + ".kml"
root = geojson_to_kml(geojson)
write_kml(root, output_file)
if __name__ == "__main__":
main()
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