regluit/questionnaire/utils.py

93 lines
2.3 KiB
Python

#!/usr/bin/python
import codecs
import cStringIO
import csv
from django.conf import settings
try:
use_session = settings.QUESTIONNAIRE_USE_SESSION
except AttributeError:
use_session = False
def split_numal(val):
"""Split, for example, '1a' into (1, 'a')
>>> split_numal("11a")
(11, 'a')
>>> split_numal("99")
(99, '')
>>> split_numal("a")
(0, 'a')
>>> split_numal("")
(0, '')
"""
if not val:
return 0, ''
for i in range(len(val)):
if not val[i].isdigit():
return int(val[0:i] or '0'), val[i:]
return int(val), ''
def numal_sort(a, b):
"""Sort a list numeric-alphabetically
>>> vals = "1a 1 10 10a 10b 11 2 2a z".split(" "); \\
... vals.sort(numal_sort); \\
... " ".join(vals)
'z 1 1a 2 2a 10 10a 10b 11'
"""
anum, astr = split_numal(a)
bnum, bstr = split_numal(b)
cmpnum = cmp(anum, bnum)
if(cmpnum == 0):
return cmp(astr, bstr)
return cmpnum
def numal0_sort(a, b):
"""
numal_sort on the first items in the list
"""
return numal_sort(a[0], b[0])
def get_runid_from_request(request):
if use_session:
return request.session.get('runcode', None)
else:
return request.runinfo.run.runid
if __name__ == "__main__":
import doctest
doctest.testmod()
class UnicodeWriter:
"""
COPIED from http://docs.python.org/library/csv.html example:
A CSV writer which will write rows to CSV file "f",
which is encoded in the given encoding.
"""
def __init__(self, f, dialect=csv.excel, encoding="utf-8", **kwds):
# Redirect output to a queue
self.queue = cStringIO.StringIO()
self.writer = csv.writer(self.queue, dialect=dialect, **kwds)
self.stream = f
self.encoder = codecs.getincrementalencoder(encoding)()
def writerow(self, row):
self.writer.writerow([unicode(s).encode("utf-8") for s in row])
# Fetch UTF-8 output from the queue ...
data = self.queue.getvalue()
data = data.decode("utf-8")
# ... and reencode it into the target encoding
data = self.encoder.encode(data)
# write to the target stream
self.stream.write(data)
# empty queue
self.queue.truncate(0)
def writerows(self, rows):
for row in rows:
self.writerow(row)