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LibC: Implement wcslcpy

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This commit is contained in:
Daniel Bertalan 2021-10-16 10:31:04 +02:00 • committed by Linus Groh
parent e6164d35fa
commit 13e6d9d71a
3 changed files with 38 additions and 0 deletions
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25
Tests/LibC/TestWchar.cpp
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@ -414,3 +414,28 @@ TEST_CASE(mbsrtowcs)
EXPECT_EQ(buf[2], L'\0');
EXPECT_EQ(src, nullptr);
}
TEST_CASE(wcslcpy)
{
auto buf = static_cast<wchar_t*>(malloc(8 * sizeof(wchar_t)));
if (!buf) {
FAIL("Could not allocate space for copy target");
return;
}
size_t ret;
// If buffer is long enough, a straight-forward string copy is performed.
ret = wcslcpy(buf, L"abc", 8);
EXPECT_EQ(ret, 3ul);
EXPECT_EQ(wmemcmp(L"abc", buf, 4), 0);
// If buffer is (supposedly) too small, the string will be truncated.
ret = wcslcpy(buf, L"1234", 4);
EXPECT_EQ(ret, 4ul);
EXPECT_EQ(wmemcmp(L"123", buf, 4), 0);
// If the buffer is null, the length of the input is returned.
ret = wcslcpy(nullptr, L"abc", 0);
EXPECT_EQ(ret, 3ul);
}