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Custom checker in C++
// Start of HEAD
#include <map>
#include <cmath>
#include <cstdio>
#include <vector>
#include <fstream>
#include <iostream>
#include <algorithm>
#ifdef __APPLE__
#include <json/json.h>
#else
#include <json/json.h>
#endif
using namespace std;
using namespace Json;
class TestStruct {
public:
size_t testcase_id;
string testcase_input_path;
string testcase_output_path;
string testcase_expected_output_path;
vector<string> metadata_file_paths;
string submission_code_path;
bool testcase_result;
size_t testcase_signal;
float testcase_time;
size_t testcase_memory;
string data;
};
class ResultStruct {
public:
bool result;
float score;
string message;
};
// End of HEAD
// Start of BODY
/**
* TestStruct members::
* testcase_id [size_t] ID of the test-case
* testcase_input_path [string] File path to test-case input
* testcase_output_path [string] File path to test-case output generated by the problem solver
* testcase_expected_output_path [string] File path to test-case expected output to be matched with
* metadata_file_paths [vector<string>] File paths to Question metadata (Extra files usually used for defining traning sets)
* submission_code_path [string] File path to submission source code
* testcase_result [bool] Set to true if test-case output matches test-case expected output. Matching is done line by line
* testcase_signal [size_t] Exit code of the test-case process
* testcase_time [float] Time taken by the test-case process in seconds
* testcase_memory [size_t] Peak memory of the test-case process determined in bytes
* data [string] <Future use>
*
*
* ResultStruct::
* result [bool] Assign test-case result. true determines success. false determines failure
* score [float] Assign test-case score. Normalized between 0 to 1
* message [string] Assign test-case message. This message is visible to the problem solver
**/
void run_custom_checker(const TestStruct t_obj,
ResultStruct &r_obj)
{
// Testing
cout << "testcase_id: " << t_obj.testcase_id << endl;
cout << "testcase_input_path: " << t_obj.testcase_input_path << endl;
cout << "testcase_output_path: " << t_obj.testcase_output_path << endl;
cout << "testcase_expected_output_path: " << t_obj.testcase_expected_output_path << endl;
for(auto it:t_obj.metadata_file_paths)
cout << "metadata_file_paths: " << it << endl;
cout << "submission_code_path: " << t_obj.submission_code_path << endl;
cout << "testcase_result: " << t_obj.testcase_result << endl;
cout << "testcase_signal: " << t_obj.testcase_signal << endl;
cout << "testcase_time: " << t_obj.testcase_time << endl;
cout << "testcase_memory: " << t_obj.testcase_memory << endl;
cout << "data: " << t_obj.data << endl;
r_obj.result = true;
r_obj.score = 1.1f;
r_obj.message = "Success";
}
// End of BODY
// Start of TAIL
int read_input_json(const string json_file_path,
TestStruct &t_obj)
{
ifstream stream(json_file_path);
string json_file_contents((std::istreambuf_iterator<char>(stream)),
std::istreambuf_iterator<char>());
Value root;
Reader reader;
if(!reader.parse(json_file_contents, root, false))
return 1;
try
{
// Read values
if(root.isMember("testcase_id"))
t_obj.testcase_id = root["testcase_id"].asInt();
if(root.isMember("input_file_path"))
t_obj.testcase_input_path = root["input_file_path"].asString();
if(root.isMember("output_file_path"))
t_obj.testcase_output_path = root["output_file_path"].asString();
if(root.isMember("expected_output_file_path"))
t_obj.testcase_expected_output_path = root["expected_output_file_path"].asString();
if(root.isMember("metadata_file_paths"))
{
Value metadata_file_path_node = root["metadata_file_paths"];
if(metadata_file_path_node.isArray())
{
for(int i = 0; i < (int)metadata_file_path_node.size(); i++)
{
string metadata_file = metadata_file_path_node[i].asString();
t_obj.metadata_file_paths.push_back(metadata_file);
}
}
}
if(root.isMember("submission_code_path"))
t_obj.submission_code_path = root["submission_code_path"].asString();
if(root.isMember("testcase_result"))
t_obj.testcase_result = root["testcase_result"].asBool();
if(root.isMember("testcase_signal"))
t_obj.testcase_signal = root["testcase_signal"].asInt();
if(root.isMember("testcase_time"))
t_obj.testcase_time = root["testcase_time"].asFloat();
if(root.isMember("testcase_memory"))
t_obj.testcase_memory = root["testcase_memory"].asInt();
if(root.isMember("data"))
t_obj.data = root["data"].asString();
}
catch(const runtime_error& error)
{
return 1;
}
return 0;
}
void write_result_json(const ResultStruct r_obj)
{
Value root;
root["custom_result"] = (int)r_obj.result;
root["custom_score"] = max( ((r_obj.score > 1.0f)? 1.0f : r_obj.score), 0.0f);
root["custom_message"] = (r_obj.message.size() > 4096)? r_obj.message.substr(0, 4095) : r_obj.message;
cout << root.toStyledString() << endl;
}
int main(int argc, char** argv)
{
// Input parameters
TestStruct t_obj;
t_obj.testcase_id = 0;
t_obj.testcase_signal = 0;
t_obj.testcase_memory = 0;
t_obj.testcase_time = 0.0f;
t_obj.testcase_result = true;
// Out parameters
ResultStruct r_obj;
r_obj.result = false;
r_obj.score = 0.0f;
r_obj.message = "Uninitialized";
if(argc < 2)
{
write_result_json(r_obj);
return 1;
}
// Decode input JSON
int failure = read_input_json((string)argv[1],
t_obj);
// Incase input JSON was malformed or not existent
if(failure)
{
r_obj.message = "Unable to read input json";
write_result_json(r_obj);
return 2;
}
// Run the custom checker evaluator
run_custom_checker(t_obj, r_obj);
// Encode result JSON
write_result_json(r_obj);
return 0;
}
// End of TAIL
@patilarpith

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patilarpith commented May 6, 2015

Testing:
Input file data. Path to be passed as command line argument

{"testcase_id":0,"input_file_path":"/run-XX/input00.txt","output_file_path":"/run-XX/output00.out","expected_output_file_path":"/run-XX/output_expected00.out","metadata_file_paths":["/run-XX/training.txt","/run-XX/training2.txt"],"submission_code_path":"/run-XX/solution.cpp", "testcase_result":true,"testcase_signal":0,"testcase_time":1.2,"testcase_memory":312322,"data":"Data"}

Expected output:

testcase_id: 0
testcase_input_path: /run-XX/input00.txt
testcase_output_path: /run-XX/output00.out
testcase_expected_output_path: /run-XX/output_expected00.out
metadata_file_paths: /run-XX/training.txt
metadata_file_paths: /run-XX/training2.txt
submission_code_path: /run-XX/solution.cpp
testcase_result: 1
testcase_signal: 0
testcase_time: 1.2
testcase_memory: 312322
data: Data
{
   "custom_message" : "Success",
   "custom_result" : 1,
   "custom_score" : 1.0
}
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