Source Code for Module 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 DateTime import DateTime 
22  from webdav.common import rfc1123_date 
23  from Products.CMFCore.FSFile import FSFile 
24 -def index_html(self, REQUEST, RESPONSE): 
25      """ Modified default view for files to enable 
26          gzip compression on js and css files. 
27      """ 
28      self._updateFromFS() 
29      data = self._readFile(0) 
30      data_len = len(data) 
31      last_mod = self._file_mod_time 
32      status = 200 
33      # HTTP If-Modified-Since header handling. 
34      header=REQUEST.get_header('If-Modified-Since', None) 
35      if header is not None: 
36          header = header.split(';')[0] 
37          try: 
38              mod_since=long(DateTime(header).timeTime()) 
39          except: 
40              mod_since=None 
41               
42          if mod_since is not None: 
43              if last_mod > 0 and last_mod <= mod_since: 
44                  status = 304 
45                  data = '' 
46      RESPONSE.setStatus(status) 
47      RESPONSE.setHeader('Last-Modified', rfc1123_date(last_mod)) 
48      RESPONSE.setHeader('Content-Type', self.content_type) 
49   
50      # The key line! 
51      RESPONSE.enableHTTPCompression(force=1) 
52   
53      if status != 304: 
54          RESPONSE.setHeader('Content-Length', data_len) 
55      if self.ZCacheable_getManager() is not None: 
56          self.ZCacheable_set(None) 
57      else: 
58          _setCacheHeaders(_ViewEmulator().__of__(self), extra_context={}) 
59      return data 
60   
61  FSFile.index_html = index_html 
62