strsep man page on Archlinux

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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,  that	is  delimited by one of the bytes 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.

ATTRIBUTES
   Multithreading (see pthreads(7))
       The strsep() function is thread-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),  str‐
       spn(3), strstr(3), strtok(3)

COLOPHON
       This  page  is  part of release 3.65 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				  2014-02-25			     STRSEP(3)
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