133 lines
3.4 KiB
Python
133 lines
3.4 KiB
Python
from db import *
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from sqlalchemy import or_
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import pwd
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import subprocess
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import os
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import signal
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def search_user(string, session):
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string = string.lower()
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exact_match = session.query(User).filter(or_(User.name==string, User.card==string)).first()
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if exact_match:
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return exact_match
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user_list = session.query(User).filter(or_(User.name.ilike('%'+string+'%'),
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User.card.ilike('%'+string+'%'))).all()
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return user_list
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def search_product(string, session):
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exact_match = session.query(Product)\
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.filter(or_(Product.bar_code==string,
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Product.name==string)).first()
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if exact_match:
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return exact_match
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product_list = session.query(Product)\
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.filter(or_(Product.bar_code.ilike('%'+string+'%'),
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Product.name.ilike('%'+string+'%'))).all()
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return product_list
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def system_user_exists(username):
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try:
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pwd.getpwnam(username)
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except KeyError:
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return False
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except UnicodeEncodeError:
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return False
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else:
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return True
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def guess_data_type(string):
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if string.startswith('ntnu') and string[4:].isdigit():
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return 'card'
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if string.isdigit() and len(string) in [8,13]:
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return 'bar_code'
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# if string.isdigit() and len(string) > 5:
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# return 'card'
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if string.isalpha() and string.islower() and system_user_exists(string):
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return 'username'
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return None
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# def retrieve_user(string, session):
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# # first = session.query(User).filter(or_(User.name==string, User.card==string)).first()
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# search = search_user(string,session)
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# if isinstance(search,User):
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# print "Found user "+search.name
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# return search
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# else:
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# if len(search) == 0:
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# print "No users found matching your search"
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# return None
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# if len(search) == 1:
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# print "Found one user: "+list[0].name
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# if confirm():
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# return list[0]
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# else:
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# return None
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# else:
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# print "Found "+str(len(search))+" users:"
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# return select_from_list(search)
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# def confirm(prompt='Confirm? (y/n) '):
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# while True:
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# input = raw_input(prompt)
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# if input in ["y","yes"]:
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# return True
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# elif input in ["n","no"]:
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# return False
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# else:
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# print "Nonsense!"
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# def select_from_list(list):
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# while True:
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# for i in range(len(list)):
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# print i+1, " ) ", list[i].name
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# choice = raw_input("Select user :\n")
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# if choice in [str(x+1) for x in range(len(list))]:
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# return list[int(choice)-1]
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# else:
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# return None
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def argmax(d, all=False, value=None):
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maxarg = None
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maxargs = []
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if value != None:
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dd = d
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d = {}
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for key in dd.keys():
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d[key] = value(dd[key])
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for key in d.keys():
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if maxarg == None or d[key] > d[maxarg]:
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maxarg = key
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if all:
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return filter(lambda k: d[k] == d[maxarg], d.keys())
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return maxarg
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def safe_str(obj):
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'''
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Ugly hack to avoid Python complaining about encodings.
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Call this on any object to turn it into a string which is
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(hopefully) safe for printing.
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'''
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if isinstance(obj, str):
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return obj
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if isinstance(obj, unicode):
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return obj.encode('utf8')
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else:
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return safe_str(unicode(obj))
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def less(string):
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'''
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Run less with string as input; wait until it finishes.
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'''
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# If we don't ignore SIGINT while running the `less` process,
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# it will become a zombie when someone presses C-c.
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int_handler = signal.signal(signal.SIGINT, signal.SIG_IGN)
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env = dict(os.environ)
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env['LESSSECURE'] = '1'
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proc = subprocess.Popen('less', env=env, stdin=subprocess.PIPE)
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proc.communicate(safe_str(string))
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signal.signal(signal.SIGINT, int_handler)
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