Source Code for Module advene.model.content.avpairs

 1  """ 
 2  I am the content handler for a set of mimetypes using attribute-value pairs. 
 3  """ 
 4   
 5  import urllib 
 6   
 7  # general handler interface 
 8   
 9 -def claims_for_handle(mimetype): 
10      """Is this content likely to handle a content with that mimetype. 
11   
12      Return an int between 00 and 99, indicating the likelyhood of this handler 
13      to handle correctly the given mimetype. 70 is used as a standard value when 
14      the hanlder is pretty sure it can handle the mimetype. 
15      """ 
16      if mimetype in [ 
17          "application/x-advene-builtin-view", 
18          "application/x-advene-type-constraint", 
19          'application/x-advene-structured', 
20      ]: 
21          return 99 
22      else: 
23          return 0 
24   
25 -def parse_content(obj): 
26      """ 
27      Parse the content of the given package element, and return the produced 
28      object. 
29      """ 
30      r = {} 
31      for l in obj.content_data.splitlines(): 
32          if not l: 
33              continue 
34          if '=' in l: 
35              key, val = l.split("=", 1) 
36              key = key.strip() 
37              val = val.strip() 
38              r[key] = urllib.unquote_plus(val) 
39          else: 
40              r['_error']=l 
41              print "Syntax error in content: >%s<" % l.encode('utf8') 
42      return r 
43   
44 -def unparse_content(obj): 
45      """ 
46      Serializes (or unparse) an object produced by `parse_content` into a 
47      string. 
48      """ 
49      r = "" 
50      for k,v in obj.iteritems(): 
51          r += "%s = %s\n" % (k, urllib.quote_plus(v)) 
52      return r 
53