Storage/bkmk_stjson.py

   1 """
   2     Bookmarks storage manager - json.
   3
   4     Written by Broytman, Jul 2010. Copyright (C) 2010 PhiloSoft Design
   5 """
   6
   7
   8 try:
   9    import json
  10 except ImportError:
  11    import simplejson as json
  12
  13 from bkmk_objects import Folder, Bookmark, Ruler, Walker
  14
  15
  16 class storage_json(Walker):
  17     filename = "bookmarks_db.json"
  18
  19     def root_folder(self, f):
  20         self.dict = dict = {}
  21         dict["children"] = children = []
  22         self.folder_stack = [children]
  23         dict["dateAdded"] = f.add_date
  24         dict["id"] = f.id
  25         dict["lastModified"] = f.last_modified
  26         dict["root"] = "placesRoot"
  27         dict["title"] = ""
  28         dict["type"] = "text/x-moz-place-container"
  29
  30     def start_folder(self, f, level):
  31         dict = {}
  32         comment = getattr(f, 'comment')
  33         if comment: dict["annos"] = make_annos(comment)
  34         dict["children"] = children = []
  35         dict["dateAdded"] = f.add_date
  36         dict["id"] = f.id
  37         index = getattr(f, 'index')
  38         if index: dict["index"] = index
  39         dict["lastModified"] = f.last_modified
  40         parent_idx = getattr(f, 'parent_idx')
  41         if parent_idx: dict["parent"] = parent_idx
  42         dict["title"] = f.name.decode('utf-8')
  43         dict["type"] = "text/x-moz-place-container"
  44         self.folder_stack[-1].append(dict)
  45         self.folder_stack.append(children)
  46
  47     def end_folder(self, f, level):
  48         del self.folder_stack[-1]
  49
  50     def bookmark(self, b, level):
  51         dict = {}
  52         comment = getattr(b, 'comment')
  53         if comment: dict["annos"] = make_annos(comment)
  54         charset = getattr(b, 'charset')
  55         if charset: dict["charset"] = charset
  56         dict["dateAdded"] = b.add_date
  57         dict["id"] = b.id
  58         index = getattr(b, 'index')
  59         if index: dict["index"] = index
  60         keyword = getattr(b, 'keyword')
  61         if keyword: dict["keyword"] = keyword
  62         dict["lastModified"] = b.last_modified
  63         dict["parent"] = b.parent_idx
  64         dict["title"] = b.name.decode('utf-8')
  65         dict["type"] = "text/x-moz-place"
  66         dict["uri"] = b.href
  67         self.folder_stack[-1].append(dict)
  68
  69     def ruler(self, r, level):
  70         dict = {}
  71         comment = getattr(r, 'comment')
  72         if comment: dict["annos"] = make_annos(comment)
  73         dict["dateAdded"] = r.add_date
  74         dict["id"] = r.id
  75         dict["index"] = r.index
  76         dict["lastModified"] = r.last_modified
  77         dict["parent"] = r.parent_idx
  78         dict["title"] = r.name.decode('utf-8')
  79         dict["type"] = "text/x-moz-place-separator"
  80         self.folder_stack[-1].append(dict)
  81
  82     def store(self, root_folder):
  83         root_folder.walk_depth(self)
  84
  85         outfile = open(self.filename, 'wb')
  86         json.dump(self.dict, outfile)
  87         outfile.close()
  88         del self.dict
  89
  90
  91     def load(self):
  92         infile = open(self.filename, 'rb')
  93         bkmk_s = infile.read()
  94         infile.close()
  95
  96         # Work around a bug in Mozilla - remove the trailing comma
  97         bkmk_s = bkmk_s.strip().replace(',]', ']')
  98         bookmarks_dict = json.loads(bkmk_s)
  99
 100         root_folder = Folder()
 101         root_folder.header = ''
 102         root_folder.add_date = bookmarks_dict["dateAdded"]
 103         root_folder.comment = ''
 104         root_folder.last_modified = bookmarks_dict["lastModified"]
 105         self.folder_stack = [root_folder]
 106         self.current_folder = root_folder
 107
 108         self.load_folder(root_folder, bookmarks_dict)
 109         if self.folder_stack:
 110             raise RuntimeError('Excessive folder stack: %s' % self.folder_stack)
 111
 112         return root_folder
 113
 114     def load_folder(self, folder, fdict):
 115         if fdict["type"] != "text/x-moz-place-container":
 116             raise ValueError("Root object is not a Mozilla container")
 117
 118         folder.id = fdict["id"]
 119         folder.index = fdict.get("index")
 120         folder.parent_idx = fdict.get("parent")
 121         folder.name = encode(fdict["title"])
 122
 123         for record in fdict["children"]:
 124             if record["type"] == "text/x-moz-place-container":
 125                 folder = Folder(
 126                     add_date=record["dateAdded"],
 127                     comment=get_comment(record.get("annos")),
 128                     last_modified=record["lastModified"])
 129                 self.current_folder.append(folder)
 130                 self.folder_stack.append(folder)
 131                 self.current_folder = folder
 132                 self.load_folder(folder, record)
 133
 134             elif record["type"] == "text/x-moz-place":
 135                 bookmark = Bookmark(
 136                     href=record["uri"],
 137                     add_date=record.get("dateAdded"),
 138                     last_modified=record.get("lastModified"),
 139                     keyword=record.get("keyword"),
 140                     comment=get_comment(record.get("annos")),
 141                     charset=record.get("charset"))
 142                 bookmark.id = record["id"]
 143                 bookmark.index = record.get("index")
 144                 bookmark.parent_idx = record["parent"]
 145                 bookmark.name = encode(record["title"])
 146                 self.current_folder.append(bookmark)
 147
 148             elif record["type"] == "text/x-moz-place-separator":
 149                 ruler = Ruler()
 150                 ruler.add_date = record["dateAdded"]
 151                 ruler.id = record["id"]
 152                 ruler.index = record["index"]
 153                 ruler.last_modified = record["lastModified"]
 154                 ruler.parent_idx = record["parent"]
 155                 ruler.name = encode(record["title"])
 156                 ruler.comment = get_comment(record.get("annos"))
 157                 self.current_folder.append(ruler)
 158
 159             else:
 160                 raise ValueError('Unknown record type "%s"' % record["type"])
 161
 162         del self.folder_stack[-1]
 163         if self.folder_stack:
 164             self.current_folder = self.folder_stack[-1]
 165         else:
 166             self.current_folder = None
 167
 168 def encode(title):
 169     return title.encode("UTF-8", "xmlcharrefreplace")
 170
 171 def get_comment(annos):
 172     if not annos:
 173         return None
 174
 175     for a in annos:
 176         if a["name"] == "bookmarkProperties/description" and \
 177                 a["type"] == 3:
 178             return a["value"].encode('utf-8')
 179
 180     return None
 181
 182 def make_annos(comment):
 183     return [{
 184         "expires": 4,
 185         "flags": 0,
 186         "mimeType": None,
 187         "name": "bookmarkProperties/description",
 188         "type": 3,
 189         "value": comment.decode('utf-8')}]