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#!/usr/bin/env python
import traceback
import pwd
import os
from os.path import join, isfile
import subprocess
import importlib
# local imports
from code_evaluator import CodeEvaluator
class CppCodeEvaluator(CodeEvaluator):
"""Tests the C code obtained from Code Server"""
def setup(self):
super(CppCodeEvaluator, self).setup()
self.submit_code_path = self.create_submit_code_file('submit.c')
def teardown(self):
super(CppCodeEvaluator, self).teardown()
# Delete the created file.
os.remove(self.submit_code_path)
def set_file_paths(self):
user_output_path = os.getcwd() + '/output'
ref_output_path = os.getcwd() + '/executable'
return user_output_path, ref_output_path
def get_commands(self, clean_ref_code_path, user_output_path,
ref_output_path):
compile_command = 'g++ {0} -c -o {1}'.format(self.submit_code_path,
user_output_path)
compile_main = 'g++ {0} {1} -o {2}'.format(clean_ref_code_path,
user_output_path,
ref_output_path)
return compile_command, compile_main
def check_code(self, user_answer, test_case_data):
""" Function validates student code using instructor code as
reference.The first argument ref_code_path, is the path to
instructor code, it is assumed to have executable permission.
The second argument submit_code_path, is the path to the student
code, it is assumed to have executable permission.
Returns
--------
returns (True, "Correct answer") : If the student function returns
expected output when called by reference code.
returns (False, error_msg): If the student function fails to return
expected output when called by reference code.
Returns (False, error_msg): If mandatory arguments are not files or
if the required permissions are not given to the file(s).
"""
ref_code_path = test_case_data[0]
clean_ref_code_path, clean_test_case_path = self._set_test_code_file_path(ref_code_path)
if not isfile(clean_ref_code_path):
return False, "No file at %s or Incorrect path" % clean_ref_code_path
if not isfile(self.submit_code_path):
return False, 'No file at %s or Incorrect path' % self.submit_code_path
success = False
self.write_to_submit_code_file(self.submit_code_path, user_answer)
user_output_path, ref_output_path = self.set_file_paths()
compile_command, compile_main = self.get_commands(clean_ref_code_path, user_output_path, ref_output_path)
ret = self._compile_command(compile_command)
proc, stdnt_stderr = ret
stdnt_stderr = self._remove_null_substitute_char(stdnt_stderr)
# Only if compilation is successful, the program is executed
# And tested with testcases
if stdnt_stderr == '':
ret = self._compile_command(compile_main)
proc, main_err = ret
main_err = self._remove_null_substitute_char(main_err)
if main_err == '':
ret = self._run_command([ref_output_path], stdin=None,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
proc, stdout, stderr = ret
if proc.returncode == 0:
success, err = True, "Correct answer"
else:
err = stdout + "\n" + stderr
os.remove(ref_output_path)
else:
err = "Error:"
try:
error_lines = main_err.splitlines()
for e in error_lines:
if ':' in e:
err = err + "\n" + e.split(":", 1)[1]
else:
err = err + "\n" + e
except:
err = err + "\n" + main_err
os.remove(user_output_path)
else:
err = "Compilation Error:"
try:
error_lines = stdnt_stderr.splitlines()
for e in error_lines:
if ':' in e:
err = err + "\n" + e.split(":", 1)[1]
else:
err = err + "\n" + e
except:
err = err + "\n" + stdnt_stderr
return success, err
# def __init__(self, test_case_data, test, language, user_answer,
# ref_code_path=None, in_dir=None):
# super(CppCodeEvaluator, self).__init__(test_case_data, test, language,
# user_answer, ref_code_path,
# in_dir)
# self.test_case_args = self.setup()
# def setup(self):
# super(CppCodeEvaluator, self).setup()
# get_ref_path = self.ref_code_path
# ref_path, test_case_path = self._set_test_code_file_path(get_ref_path)
# self.submit_path = self.create_submit_code_file('submit.c')
# # Set file paths #@@@ in different func get_output_file_paths
# c_user_output_path = os.getcwd() + '/output'
# c_ref_output_path = os.getcwd() + '/executable'
# # Set command variables #@@@ This section in different func get_commands
# compile_command = 'g++ {0} -c -o {1}'.format(self.submit_path,
# c_user_output_path)
# compile_main = 'g++ {0} {1} -o {2}'.format(ref_path,
# c_user_output_path,
# c_ref_output_path)
# run_command_args = [c_ref_output_path]
# remove_user_output = c_user_output_path #@@@ not required
# remove_ref_output = c_ref_output_path #@@@ not required
# return (ref_path, self.submit_path, compile_command, compile_main,
# run_command_args, remove_user_output, remove_ref_output)
# def check_code(self, ref_code_path, submit_code_path, compile_command,
# compile_main, run_command_args, remove_user_output,
# remove_ref_output):
# """ Function validates student code using instructor code as
# reference.The first argument ref_code_path, is the path to
# instructor code, it is assumed to have executable permission.
# The second argument submit_code_path, is the path to the student
# code, it is assumed to have executable permission.
# Returns
# --------
# returns (True, "Correct answer") : If the student function returns
# expected output when called by reference code.
# returns (False, error_msg): If the student function fails to return
# expected output when called by reference code.
# Returns (False, error_msg): If mandatory arguments are not files or
# if the required permissions are not given to the file(s).
# """
# if not isfile(ref_code_path):
# return False, "No file at %s or Incorrect path" % ref_code_path
# if not isfile(submit_code_path):
# return False, 'No file at %s or Incorrect path' % submit_code_path
# success = False
# ret = self._compile_command(compile_command)
# proc, stdnt_stderr = ret
# stdnt_stderr = self._remove_null_substitute_char(stdnt_stderr)
# # Only if compilation is successful, the program is executed
# # And tested with testcases
# if stdnt_stderr == '':
# ret = self._compile_command(compile_main)
# proc, main_err = ret
# main_err = self._remove_null_substitute_char(main_err)
# if main_err == '':
# ret = self._run_command(run_command_args, stdin=None,
# stdout=subprocess.PIPE,
# stderr=subprocess.PIPE)
# proc, stdout, stderr = ret
# if proc.returncode == 0:
# success, err = True, "Correct answer"
# else:
# err = stdout + "\n" + stderr
# os.remove(remove_ref_output)
# else:
# err = "Error:"
# try:
# error_lines = main_err.splitlines()
# for e in error_lines:
# if ':' in e:
# err = err + "\n" + e.split(":", 1)[1]
# else:
# err = err + "\n" + e
# except:
# err = err + "\n" + main_err
# os.remove(remove_user_output)
# else:
# err = "Compilation Error:"
# try:
# error_lines = stdnt_stderr.splitlines()
# for e in error_lines:
# if ':' in e:
# err = err + "\n" + e.split(":", 1)[1]
# else:
# err = err + "\n" + e
# except:
# err = err + "\n" + stdnt_stderr
# return success, err
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