/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*

 * Use is subject to license terms.

 */

#include <sys/types.h>

#include <sys/cmn_err.h>

#include <sys/systm.h>

#include <sys/varargs.h>

/*

 * SunOS-specific extensions to libc's standard set of string routines.

 *

 * NOTE: The standard libc string routines are in $SRC/common/util/string.c,

 * to facilitate sharing with standalone.

 */

/*

 * Historical entry point: remove in Solaris 2.8.

 */

char *

vsprintf_len(size_t buflen, char *buf, const char *fmt, va_list args)

{

	(void) vsnprintf(buf, buflen, fmt, args);

	return (buf);

}

/*

 * Historical entry point: remove in Solaris 2.8.

 */

/*PRINTFLIKE3*/

char *

sprintf_len(size_t buflen, char *buf, const char *fmt, ...)

{

	va_list args;

	va_start(args, fmt);

	(void) vsnprintf(buf, buflen, fmt, args);

	va_end(args);

	return (buf);

}

/*

 * Simple-minded conversion of a long into a null-terminated character

 * string.  Caller must ensure there's enough space to hold the result.

 */

void

numtos(unsigned long num, char *s)

{

	char prbuf[40];

	char *cp = prbuf;

	do {

		*cp++ = "0123456789"[num % 10];

		num /= 10;

	} while (num);

	do {

		*s++ = *--cp;

	} while (cp > prbuf);

	*s = '\0';

}

/*

 * Returns the integer value of the string of decimal numeric

 * chars beginning at **str.  Does no overflow checking.

 * Note: updates *str to point at the last character examined.

 */

int

stoi(char **str)

{

	char	*p = *str;

	int	n;

	int	c;

	for (n = 0; (c = *p) >= '0' && c <= '9'; p++) {

		n = n * 10 + c - '0';

	}

	*str = p;

	return (n);

}

/*

 * Like strrchr(), except

 * (a) it takes a maximum length for the string to be searched, and

 * (b) if the string ends with a null, it is not considered part of the string.

 */

char *

strnrchr(const char *sp, int c, size_t n)

{

	const char *r = 0;

	while (n-- > 0 && *sp) {

		if (*sp == c)

			r = sp;

		sp++;

	}

	return ((char *)r);

}

/*

 * NOTE: These routines aren't shared with standalone because the DDI mandates

 *	 that they return the buffer rather than its length.

 */

/*PRINTFLIKE2*/

char *

sprintf(char *buf, const char *fmt, ...)

{

	va_list args;

	va_start(args, fmt);

	(void) vsnprintf(buf, INT_MAX, fmt, args);

	va_end(args);

	return (buf);

}

char *

vsprintf(char *buf, const char *fmt, va_list args)

{

	(void) vsnprintf(buf, INT_MAX, fmt, args);

	return (buf);

}