euscan-ng/euscanwww/djeuscan/helpers.py
2012-05-05 10:54:04 +02:00

77 lines
1.6 KiB
Python

"""
djeuscan.helpers
"""
from distutils.version import StrictVersion, LooseVersion
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 '/' in pkg:
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