Name
strsep — extract token from string
Synopsis
#include <string.h>
char
*strsep( |
char **stringp, |
const char *delim); |
![[Note]](../stylesheet/note.png) |
Note | ||
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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 ('\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.
NOTES
The strsep() function was
introduced as a replacement for strtok(3), since the latter
cannot handle empty fields. However, 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), string(3), strpbrk(3), strspn(3), strstr(3), strtok(3)
COLOPHON
This page is part of release 3.52 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/.
|
Copyright 1993 David Metcalfe (davidprism.demon.co.uk) %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. %%%LICENSE_END References consulted: Linux libc source code Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) 386BSD man pages Modified Sat Jul 24 18:00:10 1993 by Rik Faith (faithcs.unc.edu) Modified Mon Jan 20 12:04:18 1997 by Andries Brouwer (aebcwi.nl) Modified Tue Jan 23 20:23:07 2001 by Andries Brouwer (aebcwi.nl) |