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LibC: Implement mbsnrtowcs

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This commit is contained in:
Tim Schumacher 2021-10-22 01:38:29 +02:00 • committed by Brian Gianforcaro
parent 552ae77f0d
commit 89afd4d063
2 changed files with 63 additions and 5 deletions
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39
Tests/LibC/TestWchar.cpp
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@ -441,6 +441,45 @@ TEST_CASE(mbsrtowcs)
EXPECT_EQ(src, nullptr);
}
TEST_CASE(mbsnrtowcs)
{
mbstate_t state = {};
const char good_chars[] = "\xf0\x9f\x90\x9e\xf0\x9f\x90\x9e";
const char* src;
size_t ret = 0;
// Convert nothing.
src = good_chars;
ret = mbsnrtowcs(nullptr, &src, 0, 0, &state);
EXPECT_EQ(ret, 0ul);
EXPECT_EQ(src, good_chars);
// Convert one full wide character.
src = good_chars;
ret = mbsnrtowcs(nullptr, &src, 4, 0, &state);
EXPECT_EQ(ret, 1ul);
EXPECT_EQ(src, good_chars + 4);
// Encounter a null character.
src = good_chars;
ret = mbsnrtowcs(nullptr, &src, 10, 0, &state);
EXPECT_EQ(ret, 2ul);
EXPECT_EQ(src, nullptr);
// Convert an incomplete character.
// Make sure that we point past the last processed byte.
src = good_chars;
ret = mbsnrtowcs(nullptr, &src, 6, 0, &state);
EXPECT_EQ(ret, 1ul);
EXPECT_EQ(src, good_chars + 6);
EXPECT_EQ(mbsinit(&state), 0);
// Finish converting the incomplete character.
ret = mbsnrtowcs(nullptr, &src, 2, 0, &state);
EXPECT_EQ(ret, 1ul);
EXPECT_EQ(src, good_chars + 8);
}
TEST_CASE(wcslcpy)
{
auto buf = static_cast<wchar_t*>(malloc(8 * sizeof(wchar_t)));