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# coding=utf-8
import sys
import importlib.machinery
import threading
from db import get_connection, return_connection
#sys.path.append('/home/aless/job/codeq/source/codeq-problems/')
_path_prefix = '/home/aless/job/codeq/source/codeq-problems/'
_module_loading_lock = threading.RLock() # TODO: make a more fine-grained locking import machinery
def load_module(fullname):
# return importlib.import_module(fullname)
with _module_loading_lock:
mod = sys.modules.get(fullname, None)
if mod is None:
parts = fullname.split('.')
d = _path_prefix + '/'.join(parts[0:-1])
ff = importlib.machinery.FileFinder(d, (importlib.machinery.SourceFileLoader, ['.py']))
spec = ff.find_spec(fullname)
mod = type(sys)(fullname)
mod.__loader__ = spec.loader
mod.__package__ = spec.parent
mod.__spec__ = spec
if spec.has_location:
mod.__file__ = spec.origin
mod.__cached__ = spec.cached
sys.modules[fullname] = mod
try:
spec.loader.exec_module(mod)
except:
try:
del sys.modules[fullname]
except KeyError:
pass
raise
return mod
def load_problem(language, problem_group, problem, tail_module):
return load_module('{0}.problems.{1}.{2}.{3}'.format(language, problem_group, problem, tail_module))
def load_facts(language, fact_module):
return load_module('{0}.facts.{1}'.format(language, fact_module))
def load_problems(language, tuples, tail_module):
modules = []
for problem_group, problem in tuples:
mod = '{0}.problems.{1}.{2}.{3}'.format(language, problem_group, problem, tail_module)
modules.append(load_module(mod))
return modules
def get_facts(language, problem_module):
try:
facts = problem_module.facts
except AttributeError as e:
return None
if facts is None:
return None
module = load_facts(language, facts)
if module:
try:
return module.facts
except AttributeError as e:
return None
return None
def solutions_for_problems(language, tuples):
if not tuples:
return ''
modules = load_problems(language, tuples, 'common')
solutions = set()
facts = set()
for module in modules:
try:
solution = module.solution
except AttributeError as me:
pass
else:
solutions.add(solution)
f = get_facts(language, module)
if f:
facts.add(f)
return '\n'.join(facts) + '\n' + '\n'.join(solutions)
def list_problems_in_groups(language):
conn = get_connection()
try:
cur = conn.cursor()
try:
cur.arraysize = 1000
cur.execute("select g.identifier, g.name, p.identifier, p.name from problem p inner join problem_group g on g.id = p.problem_group_id where p.language_id = (select id from language where identifier = %s) order by g.identifier, p.identifier", (language,))
result = []
previous_group_name = ''
current_sublist = None
row = cur.fetchone()
while row:
current_group_name = row[0]
if previous_group_name != current_group_name:
current_sublist = []
result.append({'identifier': current_group_name, 'name': row[1], 'problems': current_sublist})
previous_group_name = current_group_name
current_sublist.append({'identifier': row[2], 'name': row[3]})
row = cur.fetchone()
return result
finally:
cur.close()
finally:
conn.commit()
return_connection(conn)
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