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(): _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, where tokens are delimited by symbols in the string delim.  This token is terminated with a
       '\0'  character (by overwriting the delimiter) 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.

CONFORMING TO
       4.4BSD.

NOTES
       The strsep() function was introduced as a replacement for strtok(3), since the latter cannot handle empty  fields.   How-
       ever, strtok(3) conforms 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), strpbrk(3), strspn(3), strstr(3), strtok(3)

COLOPHON
       This  page  is  part of release 3.25 of the Linux man-pages project.  A description of the project, and information about
       reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.



GNU                                                        2009-01-16                                                  STRSEP(3)