2003-05-17 11:45:48 +00:00
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<title>Boost.Regex: Algorithm regex_format (deprecated)</title>
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<td valign="top" width="300">
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<h3><a href="../../../index.htm"><img height="86" width="277" alt=
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2004-10-05 15:45:52 +00:00
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"C++ Boost" src="../../../boost.png" border="0"></a></h3>
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2003-05-17 11:45:48 +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">Algorithm regex_format (deprecated)</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=
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"Boost.Regex Index" src="uarrow.gif" border="0"></a></h3>
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</td>
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</table>
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<hr>
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<p>The algorithm regex_format is deprecated; new code should use
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match_results::format instead. Existing code will continue to
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compile, the following documentation is taken from the previous
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version of boost.regex and will not be further updated:</p>
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<h3>Algorithm regex_format</h3>
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<pre>
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2003-05-24 11:13:26 +00:00
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#include <<a href="../../../boost/regex.hpp">boost/regex.hpp</a>>
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2003-05-17 11:45:48 +00:00
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</pre>
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<p>The algorithm regex_format takes the results of a match and
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creates a new string based upon a <a href="format_syntax.html">
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format string</a>, regex_format can be used for search and replace
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operations:</p>
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<pre>
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<b>template</b> <<b>class</b> OutputIterator, <b>class</b> iterator, <b>class</b> Allocator, <b>class</b> charT>
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OutputIterator regex_format(OutputIterator out,
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<b>const</b> match_results<iterator, Allocator>& m,
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<b>const</b> charT* fmt,
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match_flag_type flags = 0);
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<b>template</b> <<b>class</b> OutputIterator, <b>class</b> iterator, <b>class</b> Allocator, <b>class</b> charT>
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OutputIterator regex_format(OutputIterator out,
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<b>const</b> match_results<iterator, Allocator>& m,
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<b>const</b> std::basic_string<charT>& fmt,
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match_flag_type flags = 0);
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</pre>
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<p>The library also defines the following convenience variation of
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regex_format, which returns the result directly as a string, rather
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than outputting to an iterator [note - this version may not be
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available, or may be available in a more limited form, depending
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upon your compilers capabilities]:</p>
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<pre>
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<b>template</b> <<b>class</b> iterator, <b>class</b> Allocator, <b>class</b> charT>
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std::basic_string<charT> regex_format
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(<b>const</b> match_results<iterator, Allocator>& m,
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<b>const</b> charT* fmt,
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match_flag_type flags = 0);
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<b>template</b> <<b>class</b> iterator, <b>class</b> Allocator, <b>class</b> charT>
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std::basic_string<charT> regex_format
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(<b>const</b> match_results<iterator, Allocator>& m,
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<b>const</b> std::basic_string<charT>& fmt,
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match_flag_type flags = 0);
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</pre>
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<p>Parameters to the main version of the function are passed as
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follows:</p>
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<p></p>
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<table id="Table2" cellspacing="0" cellpadding="7" width="100%"
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border="0">
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<tr>
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<td valign="top" width="9%"> </td>
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<td valign="top" width="39%">OutputIterator out</td>
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<td valign="top" width="44%">An output iterator type, the output
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string is sent to this iterator. Typically this would be a
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std::ostream_iterator.</td>
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<td valign="top" width="9%"> </td>
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</tr>
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<tr>
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<td valign="top" width="9%"> </td>
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<td valign="top" width="39%"><b>const</b>
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match_results<iterator, Allocator>& m</td>
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<td valign="top" width="44%">An instance of match_results<>
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obtained from one of the matching algorithms above, and denoting
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what matched.</td>
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<td valign="top" width="9%"> </td>
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</tr>
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<tr>
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<td valign="top" width="9%"> </td>
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<td valign="top" width="39%"><b>const</b> charT* fmt</td>
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<td valign="top" width="44%">A format string that determines how
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the match is transformed into the new string.</td>
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<td valign="top" width="9%"> </td>
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</tr>
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<tr>
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<td valign="top" width="9%"> </td>
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<td valign="top" width="39%"><b>unsigned</b> flags</td>
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<td valign="top" width="44%">Optional flags which describe how the
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format string is to be interpreted.</td>
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<td valign="top" width="9%"> </td>
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</tr>
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</table>
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<br>
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<p><a name="format_flags"></a>Format flags are defined as
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follows:</p>
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<p></p>
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<table id="Table3" cellspacing="0" cellpadding="7" width="100%"
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border="0">
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<tr>
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<td valign="top" width="9%"> </td>
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<td valign="top" width="39%">format_all</td>
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<td valign="top" width="43%">Enables all syntax options (perl-like
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plus extentions).</td>
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<td valign="top" width="9%"> </td>
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</tr>
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<tr>
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<td valign="top" width="9%"> </td>
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<td valign="top" width="39%">format_sed</td>
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<td valign="top" width="43%">Allows only a sed-like syntax.</td>
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<td valign="top" width="9%"> </td>
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</tr>
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<tr>
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<td valign="top" width="9%"> </td>
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<td valign="top" width="39%">format_perl</td>
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<td valign="top" width="43%">Allows only a perl-like syntax.</td>
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<td valign="top" width="9%"> </td>
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</tr>
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<tr>
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<td valign="top" width="9%"> </td>
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<td valign="top" width="39%">format_no_copy</td>
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<td valign="top" width="43%">Disables copying of unmatched sections
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to the output string during <a href="regex_merge.html">
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regex_merge</a> operations.</td>
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<td valign="top" width="9%"> </td>
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</tr>
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<tr>
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<td> </td>
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<td>format_first_only</td>
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<td>When this flag is set only the first occurance will be replaced
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(applies to regex_merge only).</td>
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<td> </td>
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</tr>
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</table>
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<br>
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<br>
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<p>The format string syntax (and available options) is described
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more fully under <a href="format_syntax.html">format strings</a>
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.</p>
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<p></p>
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<hr>
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2003-10-24 10:51:38 +00:00
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<p>Revised
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<!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%d %B, %Y" startspan -->
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24 Oct 2003
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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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<!--webbot bot="Timestamp" S-Type="EDITED" S-Format="%Y" startspan -->
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2003<!--webbot bot="Timestamp" endspan i-checksum="39359" --></i></p>
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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 11:45:48 +00:00
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</body>
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</html>
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