validator

validator.cpp

#include <iostream>
#include <sstream>
#include <regex>

using namespace std;

class Validator {
public:
    Validator(istream &in) : in_(in) {}

    bool validate() {
        std::ostringstream buffer;
        buffer << in_.rdbuf();
        auto input = buffer.str();
        std::regex pattern(
                "^\\[\\(\\d\\d?\\.?(\\s\\d\\d?'\\d\\d?\")? (N|S), \\d\\d?\\.?(\\s\\d\\d?'\\d\\d?\")? (W|E)\\)\\]$");
        return std::regex_match(input.begin(), input.end(), pattern);
    }

private:
    istream &in_;
};

void testValidator(int &test_nr, const char *input, bool expected) {
    cout << "test #" << test_nr++ << endl;

    istringstream in(input);

    Validator v(in);
    if (v.validate() != expected) {
        cout << " failed:" << endl
             << "input:" << endl
             << input << endl
             << "expected: " << boolalpha << expected << endl
             << "got: " << boolalpha << !expected << endl;
    } else
        cout << " OK" << endl;
}

int main() {
    int test_nr = 1;
    testValidator(test_nr, "[(0. N, 0. E)]", true);
    testValidator(test_nr, "[(0. S, 0. W)]", true);
    testValidator(test_nr, "[(0 0'0\" N, 0 0'0\" W)]", true);
    testValidator(test_nr, "[(89 59'50\" N, 89 59'0\" E)]", true);
    // Tests for false:
    testValidator(test_nr, "[(89 5950\" N, 89 59'0\" E)]", false);
    testValidator(test_nr, "(89 N, 89 E)", false);
    testValidator(test_nr, "[]", false);
    testValidator(test_nr, "[(0. E, 0. N)]", false);
    return 0;
}