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| 4 | <title>Boost.Regex: class regex_traits</title> |
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| 8 | <body> |
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| 9 | <P> |
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| 11 | <TR> |
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| 12 | <td valign="top" width="300"> |
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| 13 | <h3><a href="../../../index.htm"><img height="86" width="277" alt="C++ Boost" src="../../../boost.png" border="0"></a></h3> |
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| 14 | </td> |
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| 15 | <TD width="353"> |
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| 16 | <H1 align="center">Boost.Regex</H1> |
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| 17 | <H2 align="center">class regex_traits</H2> |
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| 18 | </TD> |
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| 19 | <td width="50"> |
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| 20 | <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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| 21 | </td> |
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| 23 | </TABLE> |
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| 24 | </P> |
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| 25 | <HR> |
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| 26 | <H3>Contents</H3> |
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| 27 | <dl class="index"> |
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| 28 | <dt><A href="#synopsis">Synopsis</A> <dt><a href="#description">Description</a></dt> |
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| 29 | </dl> |
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| 30 | <H3><A name="synopsis"></A>Synopsis</H3> |
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| 31 | <pre> |
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| 32 | namespace boost{ |
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| 33 | |
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| 34 | template <class charT, class implementationT = sensible_default_choice> |
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| 35 | struct regex_traits : public implementationT |
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| 36 | { |
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| 37 | regex_traits() : implementationT() {} |
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| 38 | }; |
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| 39 | |
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| 40 | template <class charT> |
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| 41 | struct c_regex_traits; |
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| 42 | |
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| 43 | template <class charT> |
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| 44 | struct cpp_regex_traits; |
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| 45 | |
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| 46 | template <class charT> |
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| 47 | struct w32_regex_traits; |
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| 48 | |
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| 49 | } // namespace boost |
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| 50 | </pre> |
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| 51 | <H3><A name="description"></A>Description</H3> |
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| 52 | <P>The class regex_traits is just a thin wrapper around an actual implemention |
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| 53 | class, which may be one of:</P> |
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| 54 | <UL> |
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| 55 | <LI> |
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| 56 | c_regex_traits: this class is deprecated, it wraps the C locale, and is used as |
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| 57 | the default implementation when the platform is not Win32, and the C++ locale |
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| 58 | is not available.</LI> |
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| 59 | <LI> |
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| 60 | cpp_regex_traits: the default traits class for non-Win32 platforms, allows the |
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| 61 | regex class to be imbued with a std::locale instance.</LI> |
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| 62 | <LI> |
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| 63 | w32_regex_traits: the default traits class implementation on Win32 platforms, |
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| 64 | allows the regex class to be imbued with an LCID.</LI></UL> |
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| 65 | <P>The default behavior can be altered by defining one of the following |
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| 66 | configuration macros in <A href="../../../boost/regex/user.hpp">boost/regex/user.hpp</A>:</P> |
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| 67 | <UL> |
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| 68 | <LI> |
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| 69 | BOOST_REGEX_USE_C_LOCALE: makes c_regex_traits the default.</LI> |
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| 70 | <LI> |
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| 71 | BOOST_REGEX_USE_CPP_LOCALE: makes cpp_regex_traits the default.</LI></UL> |
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| 72 | <P>All these traits classes fulfil the <A href="concepts.html#traits">traits class |
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| 73 | requirements</A>.</P> |
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| 74 | <HR> |
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| 75 | <P></P> |
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| 76 | <p>Revised |
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| 77 | <!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%d %B, %Y" startspan --> |
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| 78 | 24 June 2004 |
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| 79 | <!--webbot bot="Timestamp" endspan i-checksum="39359" --></p> |
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| 80 | <p><i>© Copyright John Maddock 1998- |
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| 81 | <!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%Y" startspan --> |
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| 82 | 2004</i></p> |
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| 83 | <P><I>Use, modification and distribution are subject to the Boost Software License, |
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| 84 | Version 1.0. (See accompanying file <A href="../../../LICENSE_1_0.txt">LICENSE_1_0.txt</A> |
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| 85 | 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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| 86 | </body> |
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| 87 | </html> |
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