1 import cStringIO, zipfile

     2 from django.conf import settings

     3 from django.http import HttpResponse

     4 from django.template import loader

     5 

     6 def compress_kml(kml):

     7     "Returns compressed KMZ from the given KML string."

     8     kmz = cStringIO.StringIO()

     9     zf = zipfile.ZipFile(kmz, 'a', zipfile.ZIP_DEFLATED)

    10     zf.writestr('doc.kml', kml.encode(settings.DEFAULT_CHARSET))

    11     zf.close()

    12     kmz.seek(0)

    13     return kmz.read()

    14 

    15 def render_to_kml(*args, **kwargs):

    16     "Renders the response as KML (using the correct MIME type)."

    17     return HttpResponse(loader.render_to_string(*args, **kwargs),

    18                         mimetype='application/vnd.google-earth.kml+xml')

    19 

    20 def render_to_kmz(*args, **kwargs):

    21     """

    22     Compresses the KML content and returns as KMZ (using the correct 

    23     MIME type).

    24     """

    25     return HttpResponse(compress_kml(loader.render_to_string(*args, **kwargs)),

    26                         mimetype='application/vnd.google-earth.kmz')

    27 

    28 

    29 def render_to_text(*args, **kwargs):

    30     "Renders the response using the MIME type for plain text."

    31     return HttpResponse(loader.render_to_string(*args, **kwargs),

    32                         mimetype='text/plain')