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-rw-r--r--wcsmbs/wcsncpy.c60
1 files changed, 4 insertions, 56 deletions
diff --git a/wcsmbs/wcsncpy.c b/wcsmbs/wcsncpy.c
index 2fd523c..d5d7f4a 100644
--- a/wcsmbs/wcsncpy.c
+++ b/wcsmbs/wcsncpy.c
@@ -26,62 +26,10 @@
wchar_t *
__wcsncpy (wchar_t *dest, const wchar_t *src, size_t n)
{
- wint_t c;
- wchar_t *const s = dest;
-
- --dest;
-
- if (n >= 4)
- {
- size_t n4 = n >> 2;
-
- for (;;)
- {
- c = *src++;
- *++dest = c;
- if (c == L'\0')
- break;
- c = *src++;
- *++dest = c;
- if (c == L'\0')
- break;
- c = *src++;
- *++dest = c;
- if (c == L'\0')
- break;
- c = *src++;
- *++dest = c;
- if (c == L'\0')
- break;
- if (--n4 == 0)
- goto last_chars;
- }
- n = n - (dest - s) - 1;
- if (n == 0)
- return s;
- goto zero_fill;
- }
-
- last_chars:
- n &= 3;
- if (n == 0)
- return s;
-
- do
- {
- c = *src++;
- *++dest = c;
- if (--n == 0)
- return s;
- }
- while (c != L'\0');
-
- zero_fill:
- do
- *++dest = L'\0';
- while (--n > 0);
-
- return s;
+ size_t size = __wcsnlen (src, n);
+ if (size != n)
+ __wmemset (dest + size, L'\0', n - size);
+ return __wmemcpy (dest, src, size);
}
#ifndef WCSNCPY
weak_alias (__wcsncpy, wcsncpy)