1 files changed, 79 insertions, 0 deletions
diff --git a/private/crt32/mbstring/mbsnbcpy.c b/private/crt32/mbstring/mbsnbcpy.c
new file mode 100644
index 000000000..1f193f5a5
--- /dev/null
+++ b/private/crt32/mbstring/mbsnbcpy.c
@@ -0,0 +1,79 @@
+/*** 
+*mbsnbcpy.c - Copy one string to another, n bytes only (MBCS)
+*
+*	Copyright (c) 1985-1993, Microsoft Corporation.  All rights reserved.
+*
+*Purpose:
+*	Copy one string to another, n bytes only (MBCS)
+*
+*Revision History:
+*	05-19-93  KRS	Created from mbsncpy.
+*	08-03-93  KRS	Fix logic bug.
+*
+*******************************************************************************/
+
+#ifdef _MBCS
+#include <cruntime.h>
+#include <mbdata.h>
+#include <mbctype.h>
+#include <mbstring.h>
+
+/***
+* _mbsnbcpy - Copy one string to another, n bytes only (MBCS)
+*
+*Purpose:
+*	Copies exactly cnt bytes from src to dst.  If strlen(src) < cnt, the
+*	remaining character are padded with null bytes.  If strlen >= cnt, no
+*	terminating null byte is added.  2-byte MBCS characters are handled
+*       correctly.
+*
+*Entry:
+*	unsigned char *dst = destination for copy
+*	unsigned char *src = source for copy
+*	int cnt = number of characters to copy
+*
+*Exit:
+*	returns dst = destination of copy
+*
+*Exceptions:
+*
+*******************************************************************************/
+
+unsigned char * _CRTAPI1 _mbsnbcpy(dst, src, cnt)
+unsigned char *dst;
+const unsigned char *src;
+size_t cnt;
+{
+
+	unsigned char *start = dst;
+
+	while (cnt) {
+
+		cnt--;
+		if (_ISLEADBYTE(*src)) {
+			*dst++ = *src++;
+			if (!cnt) {
+				dst[-1] = '\0';
+				break;
+			}
+			cnt--;
+			if ((*dst++ = *src++) == '\0') {
+				dst[-2] = '\0';
+				break;
+                        }
+                }
+
+		else
+			if ((*dst++ = *src++) == '\0')
+				break;
+
+	}
+
+	/* pad with nulls as needed */
+
+	while (cnt--)
+		*dst++ = '\0';
+
+	return start;
+}
+#endif	/* _MBCS */