opendarwin man page for strsep

STRSEP(3)						     Linux Programmer's Manual							 STRSEP(3)

NAME
       strsep - extract token from string

SYNOPSIS
       #include <string.h>

       char *strsep(char **stringp, const char *delim);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       strsep():
	   Since glibc 2.19:
	       _DEFAULT_SOURCE
	   Glibc 2.19 and earlier:
	       _BSD_SOURCE

DESCRIPTION
       If  *stringp  is  NULL,	the  strsep()  function returns NULL and does nothing else.  Otherwise, this function finds the first token in the
       string *stringp, that is delimited by one of the bytes in the string delim.  This token is terminated by overwriting the delimiter  with  a
       null  byte  (''),  and  *stringp is updated to point past the token.  In case no delimiter was found, the token is taken to be the entire
       string *stringp, and *stringp is made NULL.

RETURN VALUE
       The strsep() function returns a pointer to the token, that is, it returns the original value of *stringp.

ATTRIBUTES
       For an explanation of the terms used in this section, see attributes(7).

       +----------+---------------+---------+
       |Interface | Attribute	  | Value   |
       +----------+---------------+---------+
       |strsep()  | Thread safety | MT-Safe |
       +----------+---------------+---------+
CONFORMING TO
       4.4BSD.

NOTES
       The strsep() function was introduced as a replacement for strtok(3), since the latter cannot handle empty fields.  However, strtok(3)  con-
       forms to C89/C99 and hence is more portable.

BUGS
       Be cautious when using this function.  If you do use it, note that:

       * This function modifies its first argument.

       * This function cannot be used on constant strings.

       * The identity of the delimiting character is lost.

SEE ALSO
       index(3), memchr(3), rindex(3), strchr(3), string(3), strpbrk(3), strspn(3), strstr(3), strtok(3)

COLOPHON
       This  page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

GNU
								    2016-03-15								 STRSEP(3)