105 lines
3.9 KiB
C++
105 lines
3.9 KiB
C++
#include "SceTypes.hpp"
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#include "prx/libc/include/general/VabiMacros.hpp"
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#include <cstdarg>
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#include <cstdint>
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#include <cstdio>
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#include <cstdlib>
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#include <string>
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extern "C" int APS5_VABI vswprintf_nid_postfix(char16_t*, std::size_t, const char16_t*, VaList*);
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extern "C" int APS5_VABI snwprintf_s_nid_postfix(char16_t*, std::size_t, const char16_t*, ...);
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static int APS5_VABI Format(char16_t* buffer, std::size_t size, const char16_t* format, ...) {
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#ifdef _WIN32
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__builtin_sysv_va_list args;
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__builtin_sysv_va_start(args, format);
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#else
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std::va_list args;
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va_start(args, format);
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#endif
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const int result = vswprintf_nid_postfix(buffer, size, format, reinterpret_cast<VaList*>(args));
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#ifdef _WIN32
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__builtin_sysv_va_end(args);
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#else
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va_end(args);
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#endif
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return result;
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}
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static void Check(const char16_t* format, const char* input, const char16_t* expected) {
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char16_t buffer[32]{};
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const int result = Format(buffer, 32, format, input);
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const std::u16string wanted(expected);
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if (result != static_cast<int>(wanted.size()) || buffer != wanted) {
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std::fprintf(stderr, "wide precision: expected %zu units, got %d\n", wanted.size(), result);
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std::abort();
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}
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}
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static void Require(bool condition, const char* message) {
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if (!condition) {
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std::fprintf(stderr, "snwprintf_s: %s\n", message);
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std::abort();
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}
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}
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static void CheckBounded() {
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constexpr std::size_t rsizeMax = SIZE_MAX >> 1;
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const char16_t* const nullWide = nullptr;
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const char* const nullNarrow = nullptr;
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char16_t buffer[16];
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buffer[0] = u'x';
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Require(snwprintf_s_nid_postfix(buffer, 16, u"%d-%ls-%s", 42, u"ab", "\xc3\xa9") == 7, "complete output length");
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Require(buffer == std::u16string(u"42-ab-\u00e9"), "complete output");
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buffer[5] = u'x';
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Require(snwprintf_s_nid_postfix(buffer, 5, u"%d-%ls", 42, u"abcd") == 7, "truncated output length");
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Require(buffer == std::u16string(u"42-a") && buffer[5] == u'x', "truncated output");
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buffer[0] = u'x';
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buffer[1] = u'y';
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Require(snwprintf_s_nid_postfix(buffer, 1, u"%x", 0xabcu) == 3, "one unit buffer length");
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Require(buffer[0] == 0 && buffer[1] == u'y', "one unit buffer");
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buffer[0] = u'x';
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Require(snwprintf_s_nid_postfix(buffer, 16, u"") == 0 && buffer[0] == 0, "empty format");
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buffer[0] = u'x';
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Require(snwprintf_s_nid_postfix(buffer, 16, nullptr) < 0 && buffer[0] == 0, "null format");
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Require(snwprintf_s_nid_postfix(nullptr, 16, u"a") < 0, "null buffer");
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buffer[0] = u'x';
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Require(snwprintf_s_nid_postfix(buffer, 0, u"a") < 0 && buffer[0] == u'x', "zero size");
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buffer[0] = u'x';
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Require(snwprintf_s_nid_postfix(buffer, rsizeMax + 1, u"a") < 0 && buffer[0] == u'x', "size above RSIZE_MAX");
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int written = -7;
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buffer[0] = u'x';
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Require(snwprintf_s_nid_postfix(buffer, 16, u"ab%n", &written) < 0 && buffer[0] == 0 && written == -7, "%n");
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buffer[0] = u'x';
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Require(snwprintf_s_nid_postfix(buffer, 16, u"a%ls", nullWide) < 0 && buffer[0] == 0, "null %ls argument");
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buffer[0] = u'x';
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Require(snwprintf_s_nid_postfix(buffer, 16, u"a%s", nullNarrow) < 0 && buffer[0] == 0, "null %s argument");
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Require(Format(buffer, 16, u"%s", nullNarrow) == 6 && buffer == std::u16string(u"(null)"), "vswprintf null %s argument");
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}
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int main() {
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CheckBounded();
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Check(u"%.2s", "\xc3\xa9\xc3\xa8", u"\u00e9\u00e8");
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Check(u"%.1s", "\xc3\xa9\xc3\xa8", u"\u00e9");
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Check(u"%.0s", "\xc3\xa9", u"");
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Check(u"%.3s", "\xc3\xa9", u"\u00e9");
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Check(u"%s", "\xc3\xa9\xc3\xa8", u"\u00e9\u00e8");
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Check(u"%.2s", "abcd", u"ab");
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Check(u"%4.2s", "\xc3\xa9\xc3\xa8", u" \u00e9\u00e8");
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Check(u"%-4.2s", "\xc3\xa9\xc3\xa8", u"\u00e9\u00e8 ");
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Check(u"%.2s", "\xf0\x9f\x98\x80x", u"\U0001f600");
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Check(u"%.1s", "\xf0\x9f\x98\x80x", u"");
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Check(u"%.3s", "\xf0\x9f\x98\x80x", u"\U0001f600x");
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}
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