|
|
class Problem < ActiveRecord::Base
|
|
|
|
|
|
belongs_to :description
|
|
|
has_and_belongs_to_many :contests
|
|
|
has_many :test_pairs, :dependent => :delete_all
|
|
|
|
|
|
validates_presence_of :name
|
|
|
validates_format_of :name, :with => /^\w+$/
|
|
|
validates_presence_of :full_name
|
|
|
|
|
|
DEFAULT_TIME_LIMIT = 1
|
|
|
DEFAULT_MEMORY_LIMIT = 32
|
|
|
|
|
|
def self.find_available_problems
|
|
|
find(:all, :conditions => {:available => true}, :order => "date_added DESC")
|
|
|
end
|
|
|
|
|
|
def self.create_from_import_form_params(params, old_problem=nil)
|
|
|
problem = old_problem || Problem.new
|
|
|
import_params = Problem.extract_params_and_check(params, problem)
|
|
|
|
|
|
if not problem.valid?
|
|
|
return problem, 'Error importing'
|
|
|
end
|
|
|
|
|
|
problem.full_score = 100
|
|
|
problem.date_added = Time.new
|
|
|
problem.test_allowed = true
|
|
|
problem.output_only = false
|
|
|
problem.available = false
|
|
|
|
|
|
if not problem.save
|
|
|
return problem, 'Error importing'
|
|
|
end
|
|
|
|
|
|
import_to_db = params.has_key? :import_to_db
|
|
|
|
|
|
importer = TestdataImporter.new(problem)
|
|
|
|
|
|
if not importer.import_from_file(import_params[:file],
|
|
|
import_params[:time_limit],
|
|
|
import_params[:memory_limit],
|
|
|
import_to_db)
|
|
|
problem.errors.add_to_base('Import error.')
|
|
|
end
|
|
|
|
|
|
return problem, importer.log_msg
|
|
|
end
|
|
|
|
|
|
def self.download_file_basedir
|
|
|
return "#{RAILS_ROOT}/data/tasks"
|
|
|
end
|
|
|
|
|
|
protected
|
|
|
|
|
|
def self.to_i_or_default(st, default)
|
|
|
if st!=''
|
|
|
st.to_i
|
|
|
else
|
|
|
default
|
|
|
end
|
|
|
end
|
|
|
|
|
|
def self.extract_params_and_check(params, problem)
|
|
|
time_limit = Problem.to_i_or_default(params[:time_limit],
|
|
|
DEFAULT_TIME_LIMIT)
|
|
|
memory_limit = Problem.to_i_or_default(params[:memory_limit],
|
|
|
DEFAULT_MEMORY_LIMIT)
|
|
|
|
|
|
if time_limit==0 and time_limit_s!='0'
|
|
|
problem.errors.add_to_base('Time limit format errors.')
|
|
|
elsif time_limit<=0 or time_limit >60
|
|
|
problem.errors.add_to_base('Time limit out of range.')
|
|
|
end
|
|
|
|
|
|
if memory_limit==0 and memory_limit_s!='0'
|
|
|
problem.errors.add_to_base('Memory limit format errors.')
|
|
|
elsif memory_limit<=0 or memory_limit >512
|
|
|
problem.errors.add_to_base('Memory limit out of range.')
|
|
|
end
|
|
|
|
|
|
if params[:file]==nil or params[:file]==''
|
|
|
problem.errors.add_to_base('No testdata file.')
|
|
|
end
|
|
|
|
|
|
file = params[:file]
|
|
|
|
|
|
if problem.errors.length!=0
|
|
|
return problem
|
|
|
end
|
|
|
|
|
|
problem.name = params[:name]
|
|
|
if params[:full_name]!=''
|
|
|
problem.full_name = params[:full_name]
|
|
|
else
|
|
|
problem.full_name = params[:name]
|
|
|
end
|
|
|
|
|
|
return {
|
|
|
:time_limit => time_limit,
|
|
|
:memory_limit => memory_limit,
|
|
|
:file => file
|
|
|
}
|
|
|
end
|
|
|
|
|
|
end
|
|
|
|
Jittat Fakcharoenphol-