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LibC: Implement wcsdup

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Tim Schumacher 2021-11-07 17:49:01 +01:00 • committed by Brian Gianforcaro
parent 7a44c11378
commit 8eca395e4c
2 changed files with 15 additions and 0 deletions
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14
Userland/Libraries/LibC/wchar.cpp
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@ -61,6 +61,20 @@ wchar_t* wcscpy(wchar_t* dest, const wchar_t* src)
return original_dest; return original_dest;
} }
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/wcsdup.html
wchar_t* wcsdup(const wchar_t* str)
{
size_t length = wcslen(str);
wchar_t* new_str = (wchar_t*)malloc(sizeof(wchar_t) * (length + 1));
if (!new_str) {
errno = ENOMEM;
return nullptr;
}
return wcscpy(new_str, str);
}
wchar_t* wcsncpy(wchar_t* dest, const wchar_t* src, size_t num) wchar_t* wcsncpy(wchar_t* dest, const wchar_t* src, size_t num)
{ {
wchar_t* original_dest = dest; wchar_t* original_dest = dest;

1
Userland/Libraries/LibC/wchar.h
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@ -28,6 +28,7 @@ struct tm;
size_t wcslen(const wchar_t*); size_t wcslen(const wchar_t*);
wchar_t* wcscpy(wchar_t*, const wchar_t*); wchar_t* wcscpy(wchar_t*, const wchar_t*);
wchar_t* wcsdup(const wchar_t*);
wchar_t* wcsncpy(wchar_t*, const wchar_t*, size_t); wchar_t* wcsncpy(wchar_t*, const wchar_t*, size_t);
__attribute__((warn_unused_result)) size_t wcslcpy(wchar_t*, const wchar_t*, size_t); __attribute__((warn_unused_result)) size_t wcslcpy(wchar_t*, const wchar_t*, size_t);
int wcscmp(const wchar_t*, const wchar_t*); int wcscmp(const wchar_t*, const wchar_t*);