Strntok.c File Reference

#include <string.h>
#include "Strn.h"

Include dependency graph for Strntok.c:

Go to the source code of this file.

Functions
char *	Strtok (char *buf, const char *delims)
int	Strntok (char *dstTokenStart, size_t tokenSize, char *buf, const char *delims)

Function Documentation

Strntok()

int Strntok	(	char *	dstTokenStart,
		size_t	tokenSize,
		char *	buf,
		const char *	delims
	)

Definition at line 80 of file Strntok.c.

{
    static char *p = NULL;
    char *end;
    char *lim;
    char *dst;
    int len;
 
    dst = dstTokenStart;
    lim = dst + tokenSize - 1;      /* Leave room for nul byte. */
 
    if (buf != NULL) {
        p = buf;
    } else {
        if (p == NULL) {
            *dst = '\0';
            return (-1);        /* No more tokens. */
        }
    }
 
    for (end = p; ; end++) {
        if (*end == '\0') {
            p = NULL;       /* This is the last token. */
            break;
        }
        if (strchr(delims, (int) *end) != NULL) {
            ++end;
            p = end;
            break;
        }
        if (dst < lim)          /* Don't overrun token size. */
            *dst++ = *end;
    }
    *dst = '\0';
    len = (int) (dst - dstTokenStart);  /* Return length of token. */
 
#if (STRN_ZERO_PAD == 1)
    /* Pad with zeros. */
    for (++dst; dst <= lim; )
        *dst++ = 0;
#endif  /* STRN_ZERO_PAD */
 
    return (len);
}   /* Strntok */

Strtok()

char * Strtok	(	char *	buf,
		const char *	delims
	)

Definition at line 35 of file Strntok.c.

{
    static char *p = NULL;
    char *start, *end;
 
    if (buf != NULL) {
        p = buf;
    } else {
        if (p == NULL)
            return (NULL);      /* No more tokens. */
    }
    for (start = p, end = p; ; end++) {
        if (*end == '\0') {
            p = NULL;       /* This is the last token. */
            break;
        }
        if (strchr(delims, (int) *end) != NULL) {
            *end++ = '\0';
            p = end;
            break;
        }
    }
    return (start);
}   /* Strtok */