add cpp checker

validator_template/template.py

@@ -0,0 +1,50 @@
+import os
+import subprocess
+
+from dmoj.contrib import contrib_modules
+from dmoj.error import InternalError
+from dmoj.judgeenv import env, get_problem_root
+from dmoj.result import CheckerResult
+from dmoj.utils.helper_files import compile_with_auxiliary_files, mktemp
+from dmoj.utils.unicode import utf8text
+
+executor = None
+
+
+def get_executor(files, lang, compiler_time_limit, problem_id):
+    global executor
+
+    if executor is None:
+        if not isinstance(files, list):
+            files = [files]
+        filenames = [os.path.join(get_problem_root(problem_id), f) for f in files]
+        executor = compile_with_auxiliary_files(filenames, lang, compiler_time_limit)
+
+    return executor
+
+
+def check(process_output, judge_output, judge_input, 
+          problem_id={{problemid}},
+          files={{filecpp}},
+          lang='CPP14',
+          time_limit=10,
+          memory_limit=1024**2,
+          compiler_time_limit=10,
+          feedback=True, type='default',
+          point_value=None, **kwargs) -> CheckerResult:
+    executor = get_executor(files, lang, compiler_time_limit, problem_id)
+
+    if type not in contrib_modules:
+        raise InternalError('%s is not a valid return code parser' % type)
+
+    with mktemp(judge_input) as input_file, mktemp(process_output) as output_file, mktemp(judge_output) as judge_file:
+        process = executor.launch(input_file.name, output_file.name, judge_file.name, stdout=subprocess.PIPE,
+                                  stderr=subprocess.PIPE, memory=memory_limit, time=time_limit)
+
+        proc_output, error = map(utf8text, process.communicate())
+
+        return contrib_modules[type].ContribModule.parse_return_code(process, executor, point_value, time_limit,
+                                                                     memory_limit,
+                                                                     feedback=utf8text(proc_output)
+                                                                     if feedback else None, name='checker',
+                                                                     stderr=error)