Storage/bkmk_stjson.py

   1 """Bookmarks storage manager - json
   2
   3 This file is a part of Bookmarks database and Internet robot.
   4
   5 """
   6
   7 __author__ = "Oleg Broytman <phd@phdru.name>"
   8 __copyright__ = "Copyright (C) 2010-2017 PhiloSoft Design"
   9 __license__ = "GNU GPL"
  10
  11 __all__ = ['storage_json']
  12
  13
  14 try:
  15     import json
  16 except ImportError:
  17     import simplejson as json
  18
  19 from bkmk_objects import Folder, Bookmark, Ruler, Walker
  20
  21
  22 class storage_json(Walker):
  23     filename = "bookmarks_db.json"
  24
  25     def root_folder(self, f):
  26         self.dict = dict = {}
  27         dict["children"] = children = []
  28         self.folder_stack = [children]
  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"] = convert_date_to_json(f.add_date)
  36         guid = getattr(f, 'guid')
  37         if guid: dict["guid"] = guid
  38         dict["id"] = f.id
  39         index = getattr(f, 'index')
  40         if index is not None: dict["index"] = index
  41         dict["lastModified"] = convert_date_to_json(f.last_modified)
  42         root = getattr(f, 'root')
  43         if root: dict["root"] = root
  44         dict["title"] = f.name.decode('utf-8')
  45         dict["type"] = "text/x-moz-place-container"
  46         if root:
  47             self.dict["children"].append(dict)
  48         else:
  49             self.folder_stack[-1].append(dict)
  50         self.folder_stack.append(children)
  51
  52     def end_folder(self, f, level):
  53         del self.folder_stack[-1]
  54
  55     def bookmark(self, b, level):
  56         dict = {}
  57         comment = getattr(b, 'comment')
  58         if comment: dict["annos"] = make_annos(comment)
  59         charset = getattr(b, 'charset')
  60         if charset: dict["charset"] = charset
  61         dict["dateAdded"] = convert_date_to_json(b.add_date)
  62         guid = getattr(b, 'guid')
  63         if guid: dict["guid"] = guid
  64         dict["id"] = b.id
  65         iconuri = getattr(b, 'icon_href')
  66         if iconuri: dict["iconuri"] = iconuri
  67         index = getattr(b, 'index')
  68         if index is not None: dict["index"] = index
  69         keyword = getattr(b, 'keyword')
  70         if keyword: dict["keyword"] = keyword
  71         dict["lastModified"] = convert_date_to_json(b.last_modified)
  72         dict["title"] = b.name.decode('utf-8')
  73         dict["type"] = "text/x-moz-place"
  74         dict["uri"] = uri = b.href
  75         self.folder_stack[-1].append(dict)
  76
  77     def ruler(self, r, level):
  78         dict = {}
  79         comment = getattr(r, 'comment')
  80         if comment: dict["annos"] = make_annos(comment)
  81         dict["dateAdded"] = convert_date_to_json(r.add_date)
  82         dict["id"] = r.id
  83         guid = getattr(r, 'guid')
  84         if guid: dict["guid"] = guid
  85         dict["index"] = r.index
  86         dict["lastModified"] = convert_date_to_json(r.last_modified)
  87         if r.name: dict["title"] = r.name.decode('utf-8')
  88         dict["type"] = "text/x-moz-place-separator"
  89         self.folder_stack[-1].append(dict)
  90
  91     def store(self, root_folder):
  92         root_folder.walk_depth(self)
  93
  94         outfile = open(self.filename, 'wb')
  95         json.dump(self.dict, outfile)
  96         outfile.close()
  97         del self.dict
  98
  99     def load(self):
 100         infile = open(self.filename, 'rb')
 101         bkmk_s = infile.read()
 102         infile.close()
 103
 104         # Work around a bug in Mozilla - remove the trailing comma
 105         bkmk_s = bkmk_s.strip().replace(',]', ']')
 106         bookmarks_dict = json.loads(bkmk_s)
 107         del bkmk_s
 108
 109         root_folder = Folder()
 110         root_folder.header = ''
 111         root_folder.add_date = convert_date_from_json(bookmarks_dict.get("dateAdded"))
 112         root_folder.comment = ''
 113         root_folder.last_modified = convert_date_from_json(bookmarks_dict.get("lastModified"))
 114         self.folder_stack = [root_folder]
 115         self.current_folder = root_folder
 116
 117         if "type" not in bookmarks_dict:
 118             bookmarks_dict["id"] = "0"
 119             bookmarks_dict["title"] = ""
 120             bookmarks_dict["type"] = "text/x-moz-place-container"
 121         self.load_folder(root_folder, bookmarks_dict)
 122         if self.folder_stack:
 123             raise RuntimeError('Excessive folder stack: %s' % self.folder_stack)
 124
 125         return root_folder
 126
 127     def load_folder(self, folder, fdict):
 128         if fdict["type"] != "text/x-moz-place-container":
 129             raise ValueError("The object is not a Mozilla container")
 130
 131         folder.id = fdict["id"]
 132         folder.guid = fdict.get("guid")
 133         folder.index = fdict.get("index")
 134         folder.root = fdict.get("root")
 135         folder.name = encode_title(fdict["title"])
 136
 137         if "children" in fdict:
 138             for record in fdict["children"]:
 139                 if record["type"] == "text/x-moz-place-container":
 140                     folder = Folder(
 141                         add_date=convert_date_from_json(record.get("dateAdded")),
 142                         comment=get_comment(record.get("annos")),
 143                         last_modified=convert_date_from_json(record.get("lastModified")))
 144                     folder.guid = record.get("guid")
 145                     self.current_folder.append(folder)
 146                     self.folder_stack.append(folder)
 147                     self.current_folder = folder
 148                     self.load_folder(folder, record)
 149
 150                 elif record["type"] == "text/x-moz-place":
 151                     bookmark = Bookmark(
 152                         href=record["uri"].encode('utf-8'),
 153                         add_date=convert_date_from_json(record.get("dateAdded")),
 154                         last_modified=convert_date_from_json(record.get("lastModified")),
 155                         keyword=get_str(record, "keyword"),
 156                         comment=get_comment(record.get("annos")),
 157                         icon_href=record.get("iconuri"),
 158                         charset=get_str(record, "charset"))
 159                     bookmark.guid = record.get("guid")
 160                     bookmark.id = record["id"]
 161                     bookmark.index = record.get("index")
 162                     bookmark.name = encode_title(record["title"])
 163                     self.current_folder.append(bookmark)
 164
 165                 elif record["type"] == "text/x-moz-place-separator":
 166                     ruler = Ruler()
 167                     ruler.add_date = convert_date_from_json(record.get("dateAdded"))
 168                     ruler.guid = record.get("guid")
 169                     ruler.id = record["id"]
 170                     ruler.index = record["index"]
 171                     ruler.last_modified = convert_date_from_json(record.get("lastModified"))
 172                     ruler.name = encode_title(record.get("title"))
 173                     ruler.comment = get_comment(record.get("annos"))
 174                     self.current_folder.append(ruler)
 175
 176                 else:
 177                     raise ValueError('Unknown record type "%s"' % record["type"])
 178
 179         del self.folder_stack[-1]
 180         if self.folder_stack:
 181             self.current_folder = self.folder_stack[-1]
 182         else:
 183             self.current_folder = None
 184
 185
 186 def convert_date_to_json(date):
 187     if date:
 188         date = int(float(date) * 10**6)
 189     return date
 190
 191 def convert_date_from_json(date):
 192     if date:
 193         date = float(date)
 194         if date > 10**10:
 195             date /= 10.0**6
 196     return date
 197
 198 def encode_title(title):
 199     if title:
 200         return title.encode("UTF-8", "xmlcharrefreplace")
 201     return title
 202
 203 def get_str(record, name):
 204     if name in record:
 205         return record[name].encode('utf-8')
 206     return ''
 207
 208 def get_comment(annos):
 209     if not annos:
 210         return ''
 211
 212     for a in annos:
 213         if a["name"] == "bookmarkProperties/description":
 214             return a["value"].encode('utf-8')
 215
 216     return ''
 217
 218 def make_annos(value, name="bookmarkProperties/description"):
 219     return [{
 220         "expires": 4,
 221         "flags": 0,
 222         "name": name,
 223         "value": value.decode('utf-8')}]