GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages


Manual Reference Pages  -  STRSEP (3)

NAME

strsep - separate strings

CONTENTS

Library
Synopsis
Description
Examples
See Also
History

LIBRARY


.Lb libc

SYNOPSIS


.In string.h char * strsep char **stringp const char *delim

DESCRIPTION

The strsep function locates, in the string referenced by *stringp, the first occurrence of any character in the string delim (or the terminating \0’ character) and replaces it with a \0’. The location of the next character after the delimiter character (or NULL, if the end of the string was reached) is stored in *stringp. The original value of *stringp is returned.

An "empty" field (i.e., a character in the string delim occurs as the first character of *stringp) can be detected by comparing the location referenced by the returned pointer to \0’.

If *stringp is initially NULL, strsep returns NULL.

EXAMPLES

The following uses strsep to parse a string, and prints each token in separate line:
char *token, *string, *tofree;

tofree = string = strdup("abc,def,ghi"); assert(string != NULL);

while ((token = strsep(&string, ",")) != NULL)         printf("%s\n", token);

free(tofree);

The following uses strsep to parse a string, containing tokens delimited by white space, into an argument vector:

char **ap, *argv[10], *inputstring;

for (ap = argv; (*ap = strsep(&inputstring, " \t")) != NULL;)         if (**ap != ’\0’)                 if (++ap >= &argv[10])                         break;

SEE ALSO

memchr(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strspn(3), strstr(3), strtok(3)

HISTORY

The strsep function is intended as a replacement for the strtok function. While the strtok function should be preferred for portability reasons (it conforms to -isoC) it is unable to handle empty fields, i.e., detect fields delimited by two adjacent delimiter characters, or to be used for more than a single string at a time. The strsep function first appeared in BSD 4.4 .
Search for    or go to Top of page |  Section 3 |  Main Index


Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.