1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
#!/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
from file_utils import copy_files, delete_files
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')
self.compiled_user_answer = None
self.compiled_test_code = None
def teardown(self):
super(CppCodeEvaluator, self).teardown()
# Delete the created file.
os.remove(self.submit_code_path)
if os.path.exists(self.ref_output_path):
os.remove(self.ref_output_path)
if os.path.exists(self.user_output_path):
os.remove(self.user_output_path)
if self.files:
delete_files(self.files)
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 compile_code(self, user_answer, file_paths, test_case):
self.files = []
if self.compiled_user_answer and self.compiled_test_code:
return None
else:
ref_code_path = test_case
clean_ref_code_path, clean_test_case_path = \
self._set_test_code_file_path(ref_code_path)
if file_paths:
self.files = copy_files(file_paths)
if not isfile(clean_ref_code_path):
msg = "No file at %s or Incorrect path" % clean_ref_code_path
return False, msg
if not isfile(self.submit_code_path):
msg = "No file at %s or Incorrect path" % self.submit_code_path
return False, msg
self.write_to_submit_code_file(self.submit_code_path, user_answer)
self.user_output_path, self.ref_output_path = self.set_file_paths()
self.compile_command, self.compile_main = self.get_commands(
clean_ref_code_path,
self.user_output_path,
self.ref_output_path
)
self.compiled_user_answer = self._run_command(
self.compile_command,
shell=True,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE
)
self.compiled_test_code = self._run_command(
self.compile_main,
shell=True,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE
)
return self.compiled_user_answer, self.compiled_test_code
def check_code(self, user_answer, file_paths, test_case):
""" 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).
"""
success = False
proc, stdnt_out, stdnt_stderr = self.compiled_user_answer
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 == '':
proc, main_out, main_err = self.compiled_test_code
main_err = self._remove_null_substitute_char(main_err)
if main_err == '':
ret = self._run_command([self.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
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
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
|
