| STRSEP(3) | Library Functions Manual | STRSEP(3) | 
strsep, stresep —
#include <string.h>
char *
  
  strsep(char
    **stringp, const char
    *delim);
char *
  
  stresep(char
    **stringp, const char
    *delim, int
    escape);
strsep() function locates, in the nul-terminated
  string referenced by *stringp, the first occurrence of
  any character in the string delim (or the terminating
  ‘\0’ character) and replaces it with a
  ‘\0’. The location of the next character
  after the delimiter character (or NULL, if the end of
  the string was reached) is stored in *stringp. The
  original value of *stringp is returned.
An “empty” field, i.e., one caused by two adjacent
    delimiter characters, can be detected by comparing the location referenced
    by the pointer returned by strsep() to
    ‘\0’.
If *stringp is initially
    NULL, strsep() returns
    NULL. The stresep() function
    also takes an escape character that allows quoting the delimiter character
    so that it can be part of the source string.
strsep() to parse a string,
  containing tokens delimited by white space, into an argument vector:
char **ap, *argv[10], *inputstring;
for (ap = argv; ap < &argv[9] &&
    (*ap = strsep(&inputstring, " \t")) != NULL;) {
	if (**ap != '\0')
		ap++;
}
strsep() function is intended as a replacement for
  the strtok() function. While the
  strtok() function should be preferred for portability
  reasons (it conforms to ANSI X3.159-1989
  (“ANSI C89”)) it is unable to handle empty fields,
  i.e., detect fields delimited by two adjacent delimiter characters, or to be
  used for more than a single string at a time. The
  strsep() function first appeared in
  4.4BSD.
| August 12, 2006 | NetBSD 9.3 |