def test_lsc_should_fall_back_to_modified(self):
from zope.dublincore.interfaces import IDCTimes
import datetime
import pytz
content = self.get_content()
now = datetime.datetime(2011, 1, 2, 3, 4, tzinfo=pytz.UTC)
IDCTimes(content).modified = now
xml = self.convert(content)
self.assertEqual(['2011-01-02T03:04:00Z'],
xml.xpath('//field[@name="last-semantic-change"]'))
def test_lsc_should_not_be_duplicate_if_both_lsc_and_modified_set(self):
from zeit.cms.content.interfaces import ISemanticChange
from zope.dublincore.interfaces import IDCTimes
import datetime
import pytz
content = self.get_content()
modified = datetime.datetime(2011, 1, 2, 3, 4, tzinfo=pytz.UTC)
IDCTimes(content).modified = modified
lsc = datetime.datetime(2010, 12, 13, 14, 15, tzinfo=pytz.UTC)
ISemanticChange(content).last_semantic_change = lsc
xml = self.convert(content)
self.assertEqual(['2010-12-13T14:15:00Z'],
xml.xpath('//field[@name="last-semantic-change"]'))
def getModifiedTime(self):
"""
get the modified time from Dublin Core
"""
return IDCTimes(self).modified
def show(self):
"""Sets various headers if the request is present and returns the
data of the file. If the "If-Modified-Since" header is set and
the context is adaptable to IDCTimes, data is only returned if
the modification date of the context is newer than the date in the
"If-Modified-Since" header
>>> from zope.publisher.browser import BrowserView, TestRequest
>>> class FileTestView(FileView, BrowserView): pass
>>> import pytz
>>> class MyFile(object):
... contentType = 'text/plain'
... data = b"data of file"
... modified = datetime(2006,1,1,tzinfo=pytz.utc)
... def getSize(self):
... return len(self.data)
>>> aFile = MyFile()
>>> request = TestRequest()
>>> view = FileTestView(aFile,request)
>>> view.show() == MyFile.data
True
>>> request.response.getHeader('Content-Type')
'text/plain'
>>> request.response.getHeader('Content-Length')
'12'
If the file is adaptable to IDCTimes the "Last-Modified" header is also
set.
>>> request.response.getHeader('Last-Modified') is None
True
For the test we just declare that our file provides
IZopeDublinCore
>>> from zope.dublincore.interfaces import IZopeDublinCore
>>> from zope.interface import directlyProvides
>>> directlyProvides(aFile,IZopeDublinCore)
>>> request = TestRequest()
>>> view = FileTestView(aFile,request)
>>> view.show() == MyFile.data
True
>>> request.response.getHeader('Last-Modified')
'Sun, 01 Jan 2006 00:00:00 GMT'
If the "If-Modified-Since" header is set and is newer a 304
status is returned and the value is empty.
>>> modified = datetime(2007,12,31,tzinfo=pytz.utc)
>>> modHeader = zope.datetime.rfc1123_date(
... zope.datetime.time(modified.isoformat()))
>>> request = TestRequest(IF_MODIFIED_SINCE=modHeader)
>>> view = FileTestView(aFile,request)
>>> view.show() == b''
True
>>> request.response.getStatus()
304
An invalid value for that header is ignored.
>>> request = TestRequest(IF_MODIFIED_SINCE="Not Valid")
>>> view = FileTestView(aFile,request)
>>> view.show() == MyFile.data
True
"""
if self.request is not None:
self.request.response.setHeader('Content-Type',
self.context.contentType)
self.request.response.setHeader('Content-Length',
self.context.getSize())
try:
modified = IDCTimes(self.context).modified
except TypeError:
modified = None
if modified is None or not isinstance(modified, datetime):
return self.context.data
header = self.request.getHeader('If-Modified-Since', None)
lmt = zope.datetime.time(modified.isoformat())
if header is not None:
header = header.split(';')[0]
try:
mod_since = int(zope.datetime.time(header))
except zope.datetime.SyntaxError:
mod_since = None
if mod_since is not None:
if lmt <= mod_since:
self.request.response.setStatus(304)
return b''
self.request.response.setHeader('Last-Modified',
zope.datetime.rfc1123_date(lmt))
return self.context.data
def show(self):
"""Sets various headers if the request is present and returns the
data of the file. If the "If-Modified-Since" header is set and
the context is adaptable to IDCTimes, data is only returned if
the modification date of the context is newer than the date in the
"If-Modified-Since" header
>>> from zope.publisher.browser import BrowserView, TestRequest
>>> class FileTestView(FileView, BrowserView): pass
>>> import pytz
>>> class MyFile(object):
... contentType='text/plain'
... data="data of file"
... modified = datetime(2006,1,1,tzinfo=pytz.utc)
... def getSize(self):
... return len(self.data)
>>> aFile = MyFile()
>>> request = TestRequest()
>>> view = FileTestView(aFile,request)
>>> view.show()
'data of file'
>>> request.response.getHeader('Content-Type')
'text/plain'
>>> request.response.getHeader('Content-Length')
'12'
If the file is adaptable to IDCTimes the "Last-Modified" header is also
set.
>>> request.response.getHeader('Last-Modified') is None
True
For the test we just declare that our file provides
IZopeDublinCore
>>> from zope.dublincore.interfaces import IZopeDublinCore
>>> from zope.interface import directlyProvides
>>> directlyProvides(aFile,IZopeDublinCore)
>>> request = TestRequest()
>>> view = FileTestView(aFile,request)
>>> view.show()
'data of file'
>>> request.response.getHeader('Last-Modified')
'Sun, 01 Jan 2006 00:00:00 GMT'
If the "If-Modified-Since" header is set and is newer a 304
status is returned and the value is empty.
>>> modified = datetime(2007,12,31,tzinfo=pytz.utc)
>>> modHeader = zope.datetime.rfc1123_date(zope.datetime.time(modified.isoformat()))
>>> request = TestRequest(IF_MODIFIED_SINCE=modHeader)
>>> view = FileTestView(aFile,request)
>>> view.show()
''
>>> request.response.getStatus()
304
"""
if self.request is not None:
self.request.response.setHeader('Content-Type',
self.context.contentType)
self.request.response.setHeader('Content-Length',
self.context.getSize())
try:
modified = IDCTimes(self.context).modified
except TypeError:
modified=None
if modified is None or not isinstance(modified,datetime):
return self.context.data
header= self.request.getHeader('If-Modified-Since', None)
lmt = zope.datetime.time(modified.isoformat())
if header is not None:
header = header.split(';')[0]
try: mod_since=long(zope.datetime.time(header))
except: mod_since=None
if mod_since is not None:
if lmt <= mod_since:
self.request.response.setStatus(304)
return ''
self.request.response.setHeader('Last-Modified',
zope.datetime.rfc1123_date(lmt))
return self.context.data