--- libelwix/src/elwix.c 2015/06/25 17:53:50 1.7 +++ libelwix/src/elwix.c 2016/05/14 11:31:38 1.7.4.1 @@ -3,7 +3,7 @@ * by Michael Pounov * * $Author: misho $ -* $Id: elwix.c,v 1.7 2015/06/25 17:53:50 misho Exp $ +* $Id: elwix.c,v 1.7.4.1 2016/05/14 11:31:38 misho Exp $ * ************************************************************************** The ELWIX and AITNET software is distributed under the following @@ -208,3 +208,71 @@ elwix_byteOrder() return *(char*) &x; } + +#ifndef strlcpy +/* + * Copy src to string dst of size siz. At most siz-1 characters + * will be copied. Always NUL terminates (unless siz == 0). + * Returns strlen(src); if retval >= siz, truncation occurred. + */ +size_t +strlcpy(char *dst, const char *src, size_t siz) +{ + char *d = dst; + const char *s = src; + register size_t n = siz; + + /* Copy as many bytes as will fit */ + if (n) + while (--n) + if ((*d++ = *s++) == '\0') + break; + + /* Not enough room in dst, add NUL and traverse rest of src */ + if (!n) { + if (siz) + *d = '\0'; /* NUL-terminate dst */ + while (*s++); + } + + return (s - src - 1); /* count does not include NUL */ +} +#endif + +#ifndef strlcat +/* + * Appends src to string dst of size siz (unlike strncat, siz is the + * full size of dst, not space left). At most siz-1 characters + * will be copied. Always NUL terminates (unless siz <= strlen(dst)). + * Returns strlen(src) + MIN(siz, strlen(initial dst)). + * If retval >= siz, truncation occurred. + */ +size_t +strlcat(char *dst, const char *src, size_t siz) +{ + char *d = dst; + const char *s = src; + register size_t n = siz; + size_t dlen; + + /* Find the end of dst and adjust bytes left but don't go past end */ + while (n-- && *d != '\0') + d++; + + dlen = d - dst; + n = siz - dlen; + if (!n) + return (dlen + strlen(s)); + + while (*s != '\0') { + if (n != 1) { + *d++ = *s; + n--; + } + s++; + } + *d = '\0'; + + return (dlen + (s - src)); /* count does not include NUL */ +} +#endif