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68 lines
1.3 KiB
C
68 lines
1.3 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: lib/sdk/crt/mbstring/mbsncat.c
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* PURPOSE: Concatenate two multi byte string to maximum of n characters or bytes
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* PROGRAMER: Ariadne
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* UPDATE HISTORY:
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* 12/04/99: Created
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*/
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#include <precomp.h>
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#include <mbstring.h>
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#include <string.h>
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size_t _mbclen2(const unsigned int s);
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unsigned char *_mbset (unsigned char *string, int c);
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/*
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* @implemented
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*/
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unsigned char *_mbsncat (unsigned char *dst, const unsigned char *src, size_t n)
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{
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int c;
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unsigned char *save = dst;
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while ((c = _mbsnextc (dst)))
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dst = _mbsinc (dst);
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while (n-- > 0 && (c = _mbsnextc (src))) {
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_mbset (dst, c);
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dst = _mbsinc (dst);
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src = _mbsinc ((unsigned char *) src);
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}
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*dst = '\0';
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return save;
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}
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/*
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* @implemented
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*/
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unsigned char * _mbsnbcat(unsigned char *dst, const unsigned char *src, size_t n)
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{
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unsigned char *d;
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const unsigned char *s = src;
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if (n != 0) {
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d = dst + _mbslen(dst); // get the end of string
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d += _mbclen2(*d); // move 1 or 2 up
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do {
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if ((*d++ = *s++) == 0)
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{
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while (--n != 0)
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*d++ = 0;
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break;
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}
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if ( !(n==1 && _ismbblead(*s)) )
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n--;
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} while (n > 0);
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}
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return dst;
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}
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