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/*
* Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1999-2001, 2003 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $ISC: string.c,v 1.6.164.5 2004/09/16 01:00:58 marka Exp $ */
#include <config.h>
#include <ctype.h>
#include <isc/string.h>
static char digits[] = "0123456789abcdefghijklmnoprstuvwxyz";
isc_uint64_t
isc_string_touint64(char *source, char **end, int base) {
isc_uint64_t tmp;
isc_uint64_t overflow;
char *s = source;
char *o;
char c;
if ((base < 0) || (base == 1) || (base > 36)) {
*end = source;
return (0);
}
while (isascii(*s&0xff) && isspace(*s&0xff))
s++;
if (*s == '+' /* || *s == '-' */)
s++;
if (base == 0) {
if (*s == '0' && (*(s+1) == 'X' || *(s+1) == 'x')) {
s += 2;
base = 16;
} else if (*s == '0')
base = 8;
else
base = 10;
}
if (*s == 0) {
*end = source;
return (0);
}
overflow = ~0;
overflow /= base;
tmp = 0;
while ((c = *s) != 0) {
c = tolower(c&0xff);
/* end ? */
if ((o = strchr(digits, c)) == NULL) {
*end = s;
return (tmp);
}
/* end ? */
if ((o - digits) >= base) {
*end = s;
return (tmp);
}
/* overflow ? */
if (tmp > overflow) {
*end = source;
return (0);
}
tmp *= base;
/* overflow ? */
if ((tmp + (o - digits)) < tmp) {
*end = source;
return (0);
}
tmp += o - digits;
s++;
}
*end = s;
return (tmp);
}
char *
isc_string_separate(char **stringp, const char *delim) {
char *string = *stringp;
char *s;
const char *d;
char sc, dc;
if (string == NULL)
return (NULL);
for (s = string; (sc = *s) != '\0'; s++)
for (d = delim; (dc = *d) != '\0'; d++)
if (sc == dc) {
*s++ = '\0';
*stringp = s;
return (string);
}
*stringp = NULL;
return (string);
}
size_t
isc_string_strlcpy(char *dst, const char *src, size_t size)
{
char *d = dst;
const char *s = src;
size_t n = size;
/* Copy as many bytes as will fit */
if (n != 0U && --n != 0U) {
do {
if ((*d++ = *s++) == 0)
break;
} while (--n != 0U);
}
/* Not enough room in dst, add NUL and traverse rest of src */
if (n == 0U) {
if (size != 0U)
*d = '\0'; /* NUL-terminate dst */
while (*s++)
;
}
return(s - src - 1); /* count does not include NUL */
}
size_t
isc_string_strlcat(char *dst, const char *src, size_t size)
{
char *d = dst;
const char *s = src;
size_t n = size;
size_t dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
while (n-- != 0U && *d != '\0')
d++;
dlen = d - dst;
n = size - dlen;
if (n == 0U)
return(dlen + strlen(s));
while (*s != '\0') {
if (n != 1U) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return(dlen + (s - src)); /* count does not include NUL */
}
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