def load_from_db(self):
''' Loads the package list from a repo database file '''
if not isfile(self._db):
return {}
try:
db = open_tarfile(self._db)
except:
raise DbError(_('Could not open database: {0}').format(self._db))
packages = {}
for member in (m for m in db.getmembers()
if m.isfile() and basename(m.name) == Repo.DESC):
try:
desc = db.extractfile(member).read().decode('utf8')
info = DescParser(desc).parse()
except ParserError as e:
raise DbError(
_('Invalid db entry: {0}: {1}').format(
member.name, e.message))
except:
raise DbError(
_('Could not read db entry: {0}').format(member.name))
path = join(self._path, info['filename'])
packages[info['name']] = Package(info['name'], info['version'],
path, info)
try:
db.close()
except:
raise DbError(_('Could not close database: {0}').format(self._db))
return packages
def load(self):
''' Loads the package list from a repo database file '''
if not isfile(self._db):
return {}
if not tarfile.is_tarfile(self._db):
raise Exception(
_('File is no valid database: {0}').format(self._db))
db = tarfile.open(self._db)
packages = {}
for member in (m for m in db.getmembers()
if m.isfile() and m.name.endswith('desc')):
desc = db.extractfile(member).read().decode('utf8')
infos = dict(
((k.lower(), v)
for k, v in re.findall('%([A-Z256]+)%\n([^\n]+)\n', desc)))
if any(True for k in ['name', 'version', 'filename']
if k not in infos):
raise Exception(_('Missing database entry: {0}').format(r))
path = join(self._path, infos['filename'])
packages[infos['name']] = Package(infos['name'], infos['version'],
path, infos)
db.close()
return packages
