euscan: move version type helpers to euscan.version

Signed-off-by: Corentin Chary <corentin.chary@gmail.com>

euscanwww/djeuscan/processing/scan/scan_portage.py

@@ -8,14 +8,12 @@ from xml.etree.ElementTree import iterparse, ParseError
 from django.db.transaction import commit_on_success
 from django.core.management.color import color_style
 
-from euscan.helpers import get_version_type
+from euscan.version import get_version_type
 
 from djeuscan.processing import FakeLogger
 from djeuscan.models import Package, Version, VersionLog
 
-
-PORTDB = portage.db[portage.root]["porttree"].dbapi
-
+PORTDB = None
 
 class ScanPortage(object):
     def __init__(self, logger=None, no_log=False, purge_packages=False,
@@ -25,6 +23,10 @@ class ScanPortage(object):
         self.purge_packages = purge_packages
         self.purge_versions = purge_versions
 
+        if not PORTDB: # Lazy loading for portdb
+            global PORTDB
+            PORTDB = portage.db[portage.root]["porttree"].dbapi
+
         self.style = color_style()
 
         self._cache = {'packages': {}, 'versions': {}}