STRSEP

Section: Linux Programmer's Manual (3)
Updated: 2010-09-20
Index Return to Main Contents
 

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 with a '\0' character (by overwriting the delimiter) 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) 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 3.27 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/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
CONFORMING TO
NOTES
BUGS
SEE ALSO
COLOPHON

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Time: 19:49:25 GMT, April 27, 2011