88 lines
2.9 KiB
C++
88 lines
2.9 KiB
C++
#include "prx/libc/include/GuestTime.hpp"
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#include "prx/libc/include/general/VabiMacros.hpp"
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#include <array>
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#include <cerrno>
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#include <cstdint>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <limits>
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extern "C" {
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std::int64_t APS5_VABI libc_mktime_nid_postfix(GuestTm*);
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std::int64_t APS5_VABI mktime_nid_postfix(GuestTm*);
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GuestTm* APS5_VABI localtime_s_nid_postfix(const std::int64_t*, GuestTm*);
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void APS5_VABI tzset_nid_postfix();
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}
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using Converter = std::int64_t (APS5_VABI *)(GuestTm*);
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static void Require(bool value, const char* message) {
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if (!value) {
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std::fprintf(stderr, "%s\n", message);
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std::abort();
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}
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}
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static bool Equal(const GuestTm& left, const GuestTm& right) {
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return left.tm_sec == right.tm_sec && left.tm_min == right.tm_min && left.tm_hour == right.tm_hour
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&& left.tm_mday == right.tm_mday && left.tm_mon == right.tm_mon && left.tm_year == right.tm_year
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&& left.tm_wday == right.tm_wday && left.tm_yday == right.tm_yday && left.tm_isdst == right.tm_isdst
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&& left.tm_gmtoff == right.tm_gmtoff && left.tm_zone != nullptr && right.tm_zone != nullptr
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&& std::strcmp(left.tm_zone, right.tm_zone) == 0;
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}
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static void CheckNormalization(Converter convert, std::int64_t timer) {
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GuestTm expected{};
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Require(localtime_s_nid_postfix(&timer, &expected) == &expected, "Local conversion failed");
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GuestTm input = expected;
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input.tm_sec += 60;
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--input.tm_min;
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input.tm_wday = -1;
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input.tm_yday = -1;
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input.tm_isdst = -1;
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input.tm_gmtoff = -1;
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input.tm_zone = nullptr;
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errno = EOVERFLOW;
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Require(convert(&input) == timer, "mktime returned the wrong timestamp");
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Require(Equal(input, expected), "mktime did not normalize a valid timestamp");
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}
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static void CheckFailure(Converter convert) {
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GuestTm input{};
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input.tm_year = std::numeric_limits<int>::max();
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input.tm_mon = std::numeric_limits<int>::max();
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input.tm_mday = 1;
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input.tm_wday = 4;
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input.tm_yday = 12;
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input.tm_isdst = -1;
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input.tm_gmtoff = 123;
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input.tm_zone = "unchanged";
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const GuestTm original = input;
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Require(convert(&input) == -1, "mktime accepted an unrepresentable calendar");
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Require(Equal(input, original), "Failed mktime changed the guest calendar");
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}
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static void CheckZone(const char* zone) {
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#ifdef _WIN32
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Require(_putenv_s("TZ", zone) == 0, "Could not set the time zone");
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#else
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Require(setenv("TZ", zone, 1) == 0, "Could not set the time zone");
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#endif
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tzset_nid_postfix();
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constexpr std::array<Converter, 2> converters{libc_mktime_nid_postfix, mktime_nid_postfix};
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constexpr std::array<std::int64_t, 8> timers{-86401, -2, -1, 0, 1, 59, 60, 86400};
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for (auto convert : converters) {
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for (const auto timer : timers) {
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CheckNormalization(convert, timer);
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}
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CheckFailure(convert);
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}
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}
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int main() {
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CheckZone("UTC0");
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CheckZone("UTC-2");
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CheckZone("UTC5");
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}
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