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LibC: Implement `mblen`

This commit is contained in:
Bananymous 2025-05-27 07:14:57 +03:00
parent f52877abb4
commit f55d6b11c5
1 changed files with 20 additions and 0 deletions
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20
userspace/libraries/LibC/stdlib.cpp
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@ -547,6 +547,26 @@ char* ptsname(int fildes)
return buffer; return buffer;
} }
int mblen(const char* s, size_t n)
{
if (s == nullptr)
return 0;
if (n == 0)
return -1;
switch (__getlocale(LC_CTYPE))
{
case LOCALE_INVALID:
ASSERT_NOT_REACHED();
case LOCALE_POSIX:
return 1;
case LOCALE_UTF8:
if (const auto bytes = BAN::UTF8::byte_length(*s); n >= bytes)
return bytes;
return -1;
}
ASSERT_NOT_REACHED();
}
size_t mbstowcs(wchar_t* __restrict pwcs, const char* __restrict s, size_t n) size_t mbstowcs(wchar_t* __restrict pwcs, const char* __restrict s, size_t n)
{ {
auto* us = reinterpret_cast<const unsigned char*>(s); auto* us = reinterpret_cast<const unsigned char*>(s);