STRSEP
Section: Linux Programmer's Manual (3)
Updated: 2016-03-15
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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():
Since glibc 2.19:
_DEFAULT_SOURCE
Glibc 2.19 and earlier:
_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,
that is delimited by one of the bytes in the string
delim.
This token is terminated by overwriting the delimiter
with a null byte (aq\0aq),
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
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
strsep()
| Thread safety | MT-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)
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 4.13 of the Linux
man-pages
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
https://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ATTRIBUTES
-
- CONFORMING TO
-
- NOTES
-
- BUGS
-
- SEE ALSO
-
- COLOPHON
-
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