File size: 4,333 Bytes
1fe85dc | 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | /* Utility functions for writing output validators for the Kattis
* problem format.
*
* The primary functions and variables available are the following.
* In many cases, the only functions needed are "init_io",
* "wrong_answer", and "accept".
*
* - init_io(argc, argv):
* initialization
*
* - judge_in, judge_ans, author_out:
* std::istream objects for judge input file, judge answer
* file, and submission output file.
*
* - accept():
* exit and give Accepted!
*
* - accept_with_score(double score):
* exit with Accepted and give a score (for scoring problems)
*
* - judge_message(std::string msg, ...):
* printf-style function for emitting a judge message (a
* message that gets displayed to a privileged user with access
* to secret data etc).
*
* - wrong_answer(std::string msg, ...):
* printf-style function for exitting and giving Wrong Answer,
* and emitting a judge message (which would typically explain
* the cause of the Wrong Answer)
*
* - judge_error(std::string msg, ...):
* printf-style function for exitting and giving Judge Error,
* and emitting a judge message (which would typically explain
* the cause of the Judge Error)
*
* - author_message(std::string msg, ...):
* printf-style function for emitting an author message (a
* message that gets displayed to the author of the
* submission). (Use with caution, and be careful not to let
* it leak information!)
*
*/
#pragma once
#include <sys/stat.h>
#include <cassert>
#include <cstdarg>
#include <cstdlib>
#include <iostream>
#include <fstream>
#include <sstream>
typedef void (*feedback_function)(const std::string &, ...);
const int EXITCODE_AC = 42;
const int EXITCODE_WA = 43;
const std::string FILENAME_AUTHOR_MESSAGE = "teammessage.txt";
const std::string FILENAME_JUDGE_MESSAGE = "null";
const std::string FILENAME_JUDGE_ERROR = "judgeerror.txt";
const std::string FILENAME_SCORE = "score.txt";
#define USAGE "%s: judge_in judge_ans feedback_dir < author_out\n"
std::ifstream judge_in, judge_ans;
std::istream author_out(std::cin.rdbuf());
char *feedbackdir = NULL;
void vreport_feedback(const std::string &category,
const std::string &msg,
va_list pvar) {
std::ostringstream fname;
if (feedbackdir)
fname << feedbackdir << '/';
fname << category;
FILE *f = fopen(fname.str().c_str(), "a");
assert(f);
vfprintf(f, msg.c_str(), pvar);
fclose(f);
}
void report_feedback(const std::string &category, const std::string &msg, ...) {
va_list pvar;
va_start(pvar, msg);
vreport_feedback(category, msg, pvar);
}
void author_message(const std::string &msg, ...) {
va_list pvar;
va_start(pvar, msg);
vreport_feedback(FILENAME_AUTHOR_MESSAGE, msg, pvar);
}
void judge_message(const std::string &msg, ...) {
va_list pvar;
va_start(pvar, msg);
vreport_feedback(FILENAME_JUDGE_MESSAGE, msg, pvar);
}
void wrong_answer(const std::string &msg, ...) {
va_list pvar;
va_start(pvar, msg);
vreport_feedback(FILENAME_JUDGE_MESSAGE, msg, pvar);
exit(EXITCODE_WA);
}
void judge_error(const std::string &msg, ...) {
va_list pvar;
va_start(pvar, msg);
vreport_feedback(FILENAME_JUDGE_ERROR, msg, pvar);
assert(0);
}
void accept() {
exit(EXITCODE_AC);
}
void accept_with_score(double scorevalue) {
report_feedback(FILENAME_SCORE, "%.9le", scorevalue);
exit(EXITCODE_AC);
}
bool is_directory(const char *path) {
if(std::string(path) == std::string("/dev")) return 1;
struct stat entry;
return stat(path, &entry) == 0 && S_ISDIR(entry.st_mode);
}
void init_io(int argc, char **argv) {
if(argc < 4) {
fprintf(stderr, USAGE, argv[0]);
judge_error("Usage: %s judgein judgeans feedbackdir [opts] < userout", argv[0]);
}
// Set up feedbackdir first, as that allows us to produce feedback
// files for errors in the other parameters.
if (!is_directory(argv[3])) {
judge_error("%s: %s is not a directory\n", argv[0], argv[3]);
}
feedbackdir = argv[3];
judge_in.open(argv[1], std::ios_base::in);
if (judge_in.fail()) {
judge_error("%s: failed to open %s\n", argv[0], argv[1]);
}
judge_ans.open(argv[2], std::ios_base::in);
if (judge_ans.fail()) {
judge_error("%s: failed to open %s\n", argv[0], argv[2]);
}
author_out.rdbuf(std::cin.rdbuf());
} |