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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 noth-
       ing 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 by overwriting the delimiter with a null  byte
       ('\0')  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.  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),  str-
       spn(3), strstr(3), strtok(3)
COLOPHON
       This  page  is  part of release 3.53 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                               2011-09-28                         STRSEP(3)