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import zipfile
from io import BytesIO
from django.conf import settings
from django.http import HttpResponse
from django.template import loader
# NumPy supported?
try:
import numpy
except ImportError:
numpy = False
def compress_kml(kml):
"Return compressed KMZ from the given KML string."
kmz = BytesIO()
with zipfile.ZipFile(kmz, "a", zipfile.ZIP_DEFLATED) as zf:
zf.writestr("doc.kml", kml.encode(settings.DEFAULT_CHARSET))
kmz.seek(0)
return kmz.read()
def render_to_kml(*args, **kwargs):
"Render the response as KML (using the correct MIME type)."
return HttpResponse(
loader.render_to_string(*args, **kwargs),
content_type="application/vnd.google-earth.kml+xml",
)
def render_to_kmz(*args, **kwargs):
"""
Compress the KML content and return as KMZ (using the correct
MIME type).
"""
return HttpResponse(
compress_kml(loader.render_to_string(*args, **kwargs)),
content_type="application/vnd.google-earth.kmz",
)