180 lines
4.4 KiB
HTML
180 lines
4.4 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of STRSEP</TITLE>
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</HEAD><BODY>
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<H1>STRSEP</H1>
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Section: Linux Programmer's Manual (3)<BR>Updated: 2019-03-06<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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strsep - extract token from string
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<PRE>
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<B>#include <<A HREF="file:///usr/include/string.h">string.h</A>></B>
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<B>char *strsep(char **</B><I>stringp</I><B>, const char *</B><I>delim</I><B>);</B>
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</PRE>
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<P>
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Feature Test Macro Requirements for glibc (see
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<B><A HREF="/cgi-bin/man/man2html?7+feature_test_macros">feature_test_macros</A></B>(7)):
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<P>
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<B>strsep</B>():
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<BR> Since glibc 2.19:
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<BR> _DEFAULT_SOURCE
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<BR> Glibc 2.19 and earlier:
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<BR> _BSD_SOURCE
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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If
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<I>*stringp</I>
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is NULL, the
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<B>strsep</B>()
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function returns NULL
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and does nothing else.
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Otherwise, this function finds the first token
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in the string
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<I>*stringp</I>,
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that is delimited by one of the bytes in the string
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<I>delim</I>.
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This token is terminated by overwriting the delimiter
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with a null byte ('\0'),
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and
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<I>*stringp</I>
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is updated to point past the token.
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In case no delimiter was found, the token is taken to be
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the entire string
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<I>*stringp</I>,
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and
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<I>*stringp</I>
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is made NULL.
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<A NAME="lbAE"> </A>
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<H2>RETURN VALUE</H2>
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The
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<B>strsep</B>()
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function returns a pointer to the token,
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that is, it returns the original value of
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<I>*stringp</I>.
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<A NAME="lbAF"> </A>
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<H2>ATTRIBUTES</H2>
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For an explanation of the terms used in this section, see
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<B><A HREF="/cgi-bin/man/man2html?7+attributes">attributes</A></B>(7).
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<TABLE BORDER>
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<TR VALIGN=top><TD><B>Interface</B></TD><TD><B>Attribute</B></TD><TD><B>Value</B><BR></TD></TR>
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<TR VALIGN=top><TD>
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<B>strsep</B>()
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</TD><TD>Thread safety</TD><TD>MT-Safe<BR></TD></TR>
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</TABLE>
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<A NAME="lbAG"> </A>
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<H2>CONFORMING TO</H2>
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4.4BSD.
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<A NAME="lbAH"> </A>
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<H2>NOTES</H2>
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The
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<B>strsep</B>()
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function was introduced as a replacement for
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<B><A HREF="/cgi-bin/man/man2html?3+strtok">strtok</A></B>(3),
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since the latter cannot handle empty fields.
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However,
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<B><A HREF="/cgi-bin/man/man2html?3+strtok">strtok</A></B>(3)
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conforms to C89/C99 and hence is more portable.
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<A NAME="lbAI"> </A>
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<H2>BUGS</H2>
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Be cautious when using this function.
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If you do use it, note that:
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<DL COMPACT>
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<DT id="1">*<DD>
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This function modifies its first argument.
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<DT id="2">*<DD>
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This function cannot be used on constant strings.
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<DT id="3">*<DD>
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The identity of the delimiting character is lost.
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</DL>
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<A NAME="lbAJ"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?3+index">index</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+memchr">memchr</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+rindex">rindex</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+strchr">strchr</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+string">string</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+strpbrk">strpbrk</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+strspn">strspn</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+strstr">strstr</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+strtok">strtok</A></B>(3)
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<A NAME="lbAK"> </A>
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<H2>COLOPHON</H2>
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This page is part of release 5.05 of the Linux
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<I>man-pages</I>
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="4"><A HREF="#lbAB">NAME</A><DD>
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<DT id="5"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="6"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="7"><A HREF="#lbAE">RETURN VALUE</A><DD>
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<DT id="8"><A HREF="#lbAF">ATTRIBUTES</A><DD>
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<DT id="9"><A HREF="#lbAG">CONFORMING TO</A><DD>
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<DT id="10"><A HREF="#lbAH">NOTES</A><DD>
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<DT id="11"><A HREF="#lbAI">BUGS</A><DD>
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<DT id="12"><A HREF="#lbAJ">SEE ALSO</A><DD>
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<DT id="13"><A HREF="#lbAK">COLOPHON</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:58 GMT, March 31, 2021
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</HTML>
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