2003-05-17 11:55:51 +00:00
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<title>Boost.Regex: Regular Expression Syntax</title>
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<td valign="top" width="300">
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2004-10-05 15:45:52 +00:00
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<h3><a href="../../../index.htm"><img height="86" width="277" alt="C++ Boost" src="../../../boost.png" border="0"></a></h3>
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2003-05-17 11:55:51 +00:00
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</td>
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<TD width="353">
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<H1 align="center">Boost.Regex</H1>
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<H2 align="center">Regular Expression Syntax</H2>
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</TD>
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<td width="50">
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<h3><a href="index.html"><img height="45" width="43" alt="Boost.Regex Index" src="uarrow.gif" border="0"></a></h3>
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</TABLE>
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</P>
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<HR>
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<P>This section covers the regular expression syntax used by this library, this is
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a programmers guide, the actual syntax presented to your program's users will
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2005-01-13 17:06:21 +00:00
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depend upon the <A href="syntax_option_type.html">flags</A> used during
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expression compilation.
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</P>
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<P>There are three main syntax options available, depending upon how
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you construct the regular expression object:</P>
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<UL>
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<LI>
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<A href="syntax_perl.html">Perl</A> (this is the default behavior).</LI>
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<LI>
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<A href="syntax_extended.html">POSIX extended</A> (including the <A href="syntax_extended.html#egrep">
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egrep</A> and <A href="syntax_extended.html#awk">awk</A> variations).</LI>
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<LI>
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<A href="syntax_basic.html">POSIX Basic</A> (including the <A href="syntax_basic.html#grep">
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grep</A> and <A href="syntax_basic.html#emacs">emacs</A> variations).</LI></UL>
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<P>You can also construct a regular expression that treats every character as a <A href="syntax_option_type.html#literals">
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literal</A>, but that's not really a "syntax"!</P>
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2004-03-20 11:53:56 +00:00
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<HR>
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2005-01-13 17:06:21 +00:00
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<p>Revised
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2003-05-17 11:55:51 +00:00
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<!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%d %B, %Y" startspan -->
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2005-01-13 17:06:21 +00:00
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10 Sept 2004
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2003-10-24 10:51:38 +00:00
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<!--webbot bot="Timestamp" endspan i-checksum="39359" --></p>
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<p><i><EFBFBD> Copyright John Maddock 1998-
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2005-01-13 17:06:21 +00:00
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<!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%Y" startspan --> 2004<!--webbot bot="Timestamp" endspan i-checksum="39359" --></i></p>
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2003-10-24 10:51:38 +00:00
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<P><I>Use, modification and distribution are subject to the Boost Software License,
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Version 1.0. (See accompanying file <A href="../../../LICENSE_1_0.txt">LICENSE_1_0.txt</A>
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or copy at <A href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</A>)</I></P>
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2003-05-17 11:55:51 +00:00
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