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#!/usr/bin/env python
from __future__ import absolute_import
import subprocess
import os
from os.path import isfile
#Local imports
from .code_evaluator import CodeEvaluator
from .stdio_evaluator import Evaluator
from .file_utils import copy_files, delete_files
class JavaStdioEvaluator(StdIOEvaluator):
"""Evaluates Java StdIO based code"""
def setup(self):
super(JavaStdioEvaluator, self).setup()
self.submit_code_path = self.create_submit_code_file('Test.java')
def teardown(self):
super(JavaStdioEvaluator, self).teardown()
os.remove(self.submit_code_path)
if self.files:
delete_files(self.files)
def set_file_paths(self, directory, file_name):
output_path = "{0}{1}.class".format(directory, file_name)
return output_path
def get_commands(self):
compile_command = 'javac {0}'.format(self.submit_code_path)
return compile_command
def compile_code(self, user_answer, file_paths, expected_input, expected_output):
self.files = []
if not isfile(self.submit_code_path):
msg = "No file at %s or Incorrect path" % self.submit_code_path
return False, msg
if file_paths:
self.files = copy_files(file_paths)
user_code_directory = os.getcwd() + '/'
self.write_to_submit_code_file(self.submit_code_path, user_answer)
self.user_output_path = self.set_file_paths(user_code_directory,
'Test'
)
self.compile_command = self.get_commands()
self.compiled_user_answer = self._run_command(self.compile_command,
shell=True,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE
)
return self.compiled_user_answer
def check_code(self, user_answer, file_paths, expected_input, expected_output):
success = False
proc, stdnt_out, stdnt_stderr = self.compiled_user_answer
stdnt_stderr = self._remove_null_substitute_char(stdnt_stderr)
if stdnt_stderr == '' or "error" not in stdnt_stderr:
proc = subprocess.Popen("java Test",
shell=True,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE
)
success, err = self.evaluate_stdio(user_answer, proc,
expected_input,
expected_output
)
os.remove(self.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
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