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 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.
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 3.44 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)
