euscan-ng/euscanwww/djeuscan/helpers.py

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"""
djeuscan.helpers
"""
from distutils.version import StrictVersion, LooseVersion
from django.db.models import Q
def xint(i):
"""
Tries to cast to int, fallbacks to 0
"""
try:
return int(i)
except Exception:
return 0
def select_related_last_versions(queryset):
queryset = queryset.select_related(
'last_version_gentoo',
'last_version_overlay',
'last_version_upstream'
)
def version_key(version):
version = version.version
try:
return StrictVersion(version)
# in case of abnormal version number, fall back to LooseVersion
except ValueError:
return LooseVersion(version)
def packages_from_names(data):
"""
Returns a list of Package objects from a string of names
"""
from djeuscan.models import Package
packages = []
data = data.replace("\r", "")
for pkg in data.split('\n'):
if pkg.count('/') == 1:
cat, pkg = pkg.split('/')
packages.extend(Package.objects.filter(category=cat, name=pkg))
else:
packages.extend(Package.objects.filter(name=pkg))
return packages
def rename_fields(vqs, fields):
ret = []
for n in vqs:
for tr in fields:
if tr[0] in n:
n[tr[1]] = n[tr[0]]
del n[tr[0]]
ret.append(n)
return ret
class catch_and_return(object):
def __init__(self, err, response):
self.err = err
self.response = response
def __call__(self, fn):
def wrapper(*args, **kwargs):
try:
return fn(*args, **kwargs)
except self.err:
return self.response
return wrapper
def get_profile(user):
from djeuscan.models import UserProfile
try:
return user.get_profile()
except UserProfile.DoesNotExist:
UserProfile.objects.create(user=user)
return user.get_profile()
def get_account_categories(user):
from djeuscan.models import Package
# TODO: This is quite ugly
category_names = [obj.name for obj in get_profile(user).categories.all()]
return [c for c in Package.objects.categories()
if c["category"] in category_names]
def get_account_herds(user):
from djeuscan.models import Package
ids = [herd.pk for herd in get_profile(user).herds.all()]
return Package.objects.herds(ids=ids)
def get_account_maintainers(user):
from djeuscan.models import Package
ids = [obj.pk for obj in get_profile(user).maintainers.all()]
return Package.objects.maintainers(ids=ids)
def get_account_versionlogs(profile):
"""
Returns all watched packages
"""
from djeuscan.models import Package, VersionLog
q_categories = Q(category__in=[
category.name for category in profile.categories.all()])
q_herds = Q(herds__in=profile.herds.all())
q_maintainers = Q(maintainers__in=profile.maintainers.all())
packages = list(profile.packages.all()) + list(Package.objects.filter(
q_categories | q_herds | q_maintainers))
overlays = [o.name for o in profile.overlays.all()]
return VersionLog.objects.filter(
Q(package__in=packages) | Q(overlay__in=overlays)
)
def get_user_fav_infos(user):
upstream_k = lambda c: c["n_versions"] - c["n_packaged"] - c["n_overlay"]
categories = sorted(get_account_categories(user),
key=upstream_k, reverse=True)
c_upstream = sum([upstream_k(c) for c in categories])
herds = sorted(get_account_herds(user),
key=upstream_k, reverse=True)
h_upstream = sum([upstream_k(c) for c in herds])
maintainers = sorted(get_account_maintainers(user),
key=upstream_k, reverse=True)
m_upstream = sum([upstream_k(c) for c in maintainers])
packages = sorted(
get_profile(user).packages.all(),
key=lambda p: p.n_versions - p.n_packaged - p.n_overlay,
reverse=True
)
p_upstream = sum(
[c.n_versions - c.n_packaged - c.n_overlay for c in packages]
)
return {
"categories": categories, "categories_upstream": c_upstream,
"herds": herds, "herds_upstream": h_upstream,
"maintainers": maintainers, "maintainers_upstream": m_upstream,
"packages": packages, "packages_upstream": p_upstream,
}