def available_exports(self):
"""any zip files avail to download?
"""
proj_id = self.context.getId()
zips = export_utils.getzips(proj_id,
self.vardir)
path = export_utils.getpath(proj_id, self.vardir)
# don't want to pile up zip files forever...
# in lieu of a UI or a sensible policy,
# we'll just keep the last 5
zips, excess_zips = zips[:5], zips[5:]
for f in excess_zips:
os.unlink(os.path.join(path, f))
return zips
def __getitem__(self, name):
"""
Return a zip file.
"""
zips = self.available_exports()
path = export_utils.getpath(self.context.getId(), self.vardir)
try:
index = zips.index(name)
except ValueError:
# want a 404 here.
raise KeyError(name)
thezip = os.path.join(path, zips[index])
self.request.RESPONSE.setHeader('Content-Type', 'application/zip')
# Tell ZPublisher to serve this file efficiently, freeing up
# the Zope thread immediately.
iterator = FilestreamIterator(thezip)
self.request.RESPONSE.setHeader('Content-Length', len(iterator))
# Needs to be aq-wrapped to satisfy the security machinery.
return iterator.__of__(self)