1 .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
3 .\" %%%LICENSE_START(VERBATIM)
4 .\" Permission is granted to make and distribute verbatim copies of this
5 .\" manual provided the copyright notice and this permission notice are
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8 .\" Permission is granted to copy and distribute modified versions of this
9 .\" manual under the conditions for verbatim copying, provided that the
10 .\" entire resulting derived work is distributed under the terms of a
11 .\" permission notice identical to this one.
13 .\" Since the Linux kernel and libraries are constantly changing, this
14 .\" manual page may be incorrect or out-of-date. The author(s) assume no
15 .\" responsibility for errors or omissions, or for damages resulting from
16 .\" the use of the information contained herein. The author(s) may not
17 .\" have taken the same level of care in the production of this manual,
18 .\" which is licensed free of charge, as they might when working
21 .\" Formatted or processed versions of this manual, if unaccompanied by
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25 .\" References consulted:
26 .\" Linux libc source code
27 .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
29 .\" Modified Sat Jul 24 18:00:10 1993 by Rik Faith (faith@cs.unc.edu)
30 .\" Modified Mon Jan 20 12:04:18 1997 by Andries Brouwer (aeb@cwi.nl)
31 .\" Modified Tue Jan 23 20:23:07 2001 by Andries Brouwer (aeb@cwi.nl)
33 .TH STRSEP 3 2016-03-15 "GNU" "Linux Programmer's Manual"
35 strsep \- extract token from string
38 .B #include <string.h>
40 .BI "char *strsep(char **" stringp ", const char *" delim );
44 Feature Test Macro Requirements for glibc (see
45 .BR feature_test_macros (7)):
51 Glibc 2.19 and earlier:
59 and does nothing else.
60 Otherwise, this function finds the first token
63 that is delimited by one of the bytes in the string
65 This token is terminated by overwriting the delimiter
66 with a null byte (\(aq\e0\(aq),
69 is updated to point past the token.
70 In case no delimiter was found, the token is taken to be
79 function returns a pointer to the token,
80 that is, it returns the original value of
83 For an explanation of the terms used in this section, see
89 Interface Attribute Value
92 T} Thread safety MT-Safe
99 function was introduced as a replacement for
101 since the latter cannot handle empty fields.
104 conforms to C89/C99 and hence is more portable.
106 Be cautious when using this function.
107 If you do use it, note that:
109 This function modifies its first argument.
111 This function cannot be used on constant strings.
113 The identity of the delimiting character is lost.