Source Code for Module Products.ZenWidgets.FileGzipper'

 1  ########################################################################### 
 2  # 
 3  # This program is part of Zenoss Core, an open source monitoring platform. 
 4  # Copyright (C) 2007, Zenoss Inc. 
 5  # 
 6  # This program is free software; you can redistribute it and/or modify it 
 7  # under the terms of the GNU General Public License version 2 as published by 
 8  # the Free Software Foundation. 
 9  # 
10  # For complete information please visit: http://www.zenoss.com/oss/ 
11  # 
12  ########################################################################### 
13   
14  """ FileGzipper 
15   
16  A monkey patch that enables gzip compression on static files 
17   
18  """ 
19   
20  from Products.CMFCore.utils import _setCacheHeaders, _ViewEmulator 
21  from Products.CMFCore.utils import _checkConditionalGET 
22  from DateTime import DateTime 
23  from webdav.common import rfc1123_date 
24  from Products.CMFCore.FSFile import FSFile 
25  from Products.CMFCore.FSImage import FSImage 
26 -def index_html(self, REQUEST, RESPONSE): 
27      """ 
28      The default view of the contents of a File or Image. 
29   
30      Returns the contents of the file or image.  Also, sets the 
31      Content-Type HTTP header to the objects content type. 
32      """ 
33      self._updateFromFS() 
34      view = _ViewEmulator().__of__(self) 
35   
36      # If we have a conditional get, set status 304 and return 
37      # no content 
38      if _checkConditionalGET(view, extra_context={}): 
39          return '' 
40   
41      ###### ZENOSS PATCH ##### 
42      # Patch to ensure a static charset 
43      if ";" not in self.content_type: 
44          self.content_type += "; charset=utf-8" 
45      ######################### 
46      RESPONSE.setHeader('Content-Type', self.content_type) 
47   
48   
49      # old-style If-Modified-Since header handling. 
50      if self._setOldCacheHeaders(): 
51          # Make sure the CachingPolicyManager gets a go as well 
52          _setCacheHeaders(view, extra_context={}) 
53          return '' 
54   
55      data = self._readFile(0) 
56      data_len = len(data) 
57      RESPONSE.setHeader('Content-Length', data_len) 
58   
59      ###### ZENOSS PATCH ##### 
60      # Patch to use gzip compression 
61      RESPONSE.enableHTTPCompression(force=1) 
62      ######################### 
63   
64      #There are 2 Cache Managers which can be in play.... 
65      #need to decide which to use to determine where the cache headers 
66      #are decided on. 
67      if self.ZCacheable_getManager() is not None: 
68          self.ZCacheable_set(None) 
69      else: 
70          _setCacheHeaders(view, extra_context={}) 
71      return data 
72   
73  FSFile.index_html = index_html 
74  FSImage.index_html = index_html 
75