Source Code for Module web2py.gluon.serializers

 1  """ 
 2  This file is part of the web2py Web Framework 
 3  Copyrighted by Massimo Di Pierro <mdipierro@cs.depaul.edu> 
 4  License: LGPLv3 (http://www.gnu.org/licenses/lgpl.html) 
 5  """ 
 6  import datetime 
 7  from storage import Storage 
 8  from html import TAG 
 9  from html import xmlescape 
10  from languages import lazyT 
11  import contrib.simplejson as simplejson 
12  import contrib.rss2 as rss2 
13   
14 -def custom_json(o): 
15      if hasattr(o,'custom_json') and callable(o.custom_json): 
16          return o.custom_json() 
17      if isinstance(o, (datetime.date, 
18                        datetime.datetime, 
19                        datetime.time)): 
20          return o.isoformat()[:19].replace('T',' ') 
21      elif isinstance(o, (int, long)): 
22          return int(o) 
23      elif isinstance(o, lazyT): 
24          return str(o) 
25      elif hasattr(o,'as_list') and callable(o.as_list): 
26          return o.as_list() 
27      elif hasattr(o,'as_dict') and callable(o.as_dict): 
28          return o.as_dict() 
29      else: 
30          raise TypeError(repr(o) + " is not JSON serializable") 
31   
32   
33 -def xml_rec(value, key): 
34      if hasattr(value,'custom_xml') and callable(value.custom_xml): 
35          return value.custom_xml() 
36      elif isinstance(value, (dict, Storage)): 
37          return TAG[key](*[TAG[k](xml_rec(v, '')) for k, v in value.items()]) 
38      elif isinstance(value, list): 
39          return TAG[key](*[TAG.item(xml_rec(item, '')) for item in value]) 
40      elif hasattr(value,'as_list') and callable(value.as_list): 
41          return str(xml_rec(value.as_list(),'')) 
42      elif hasattr(value,'as_dict') and callable(value.as_dict): 
43          return str(xml_rec(value.as_dict(),'')) 
44      else: 
45          return xmlescape(value) 
46   
47   
48 -def xml(value, encoding='UTF-8', key='document'): 
49      return ('<?xml version="1.0" encoding="%s"?>' % encoding) + str(xml_rec(value,key)) 
50   
51   
52 -def json(value,default=custom_json): 
53      return simplejson.dumps(value,default=default) 
54   
55   
56 -def csv(value): 
57      return '' 
58   
59   
60 -def rss(feed): 
61      if not 'entries' in feed and 'items' in feed: 
62          feed['entries'] = feed['items'] 
63      now=datetime.datetime.now() 
64      rss = rss2.RSS2(title = feed['title'], 
65                      link = str(feed['link']), 
66                      description = feed['description'], 
67                      lastBuildDate = feed.get('created_on', now), 
68                      items = [rss2.RSSItem(\ 
69                                          title=entry['title'], 
70                                          link=str(entry['link']), 
71                                          description=entry['description'], 
72                                          pubDate=entry.get('created_on', now) 
73                                          )\ 
74                                      for entry in feed['entries'] 
75                                      ] 
76                      ) 
77      return rss2.dumps(rss) 
78