1 files changed, 81 insertions, 0 deletions
diff --git a/yaksh/java_stdio_evaluator.py b/yaksh/java_stdio_evaluator.py
new file mode 100644
index 0000000..27dd4a9
--- /dev/null
+++ b/yaksh/java_stdio_evaluator.py
@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+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(CodeEvaluator):
+    """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
+                                    )
+            evaluator = Evaluator()
+            success, err = evaluator.evaluate(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