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   4 <title>Iterating Over the Matches Within An MFC String</title>
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  27 <a name="boost_regex.ref.non_std_strings.mfc_strings.mfc_iter"></a><a class="link" href="mfc_iter.html" title="Iterating Over the Matches Within An MFC String">Iterating
  28           Over the Matches Within An MFC String</a>
  29 </h5></div></div></div>
  30 <p>
  31             The following helper functions are provided to ease the conversion from
  32             an MFC/ATL string to a <a class="link" href="../../regex_iterator.html" title="regex_iterator"><code class="computeroutput"><span class="identifier">regex_iterator</span></code></a> or <a class="link" href="../../regex_token_iterator.html" title="regex_token_iterator"><code class="computeroutput"><span class="identifier">regex_token_iterator</span></code></a>:
  33           </p>
  34 <h5>
  35 <a name="boost_regex.ref.non_std_strings.mfc_strings.mfc_iter.h0"></a>
  36             <span class="phrase"><a name="boost_regex.ref.non_std_strings.mfc_strings.mfc_iter.regex_iterator_creation_helper"></a></span><a class="link" href="mfc_iter.html#boost_regex.ref.non_std_strings.mfc_strings.mfc_iter.regex_iterator_creation_helper">regex_iterator
  37             creation helper</a>
  38           </h5>
  39 <pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">&gt;</span>
  40 <span class="identifier">regex_iterator</span><span class="special">&lt;</span><span class="identifier">charT</span> <span class="keyword">const</span><span class="special">*&gt;</span>
  41    <span class="identifier">make_regex_iterator</span><span class="special">(</span>
  42       <span class="keyword">const</span> <span class="identifier">ATL</span><span class="special">::</span><span class="identifier">CSimpleStringT</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">,</span>
  43       <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;&amp;</span> <span class="identifier">e</span><span class="special">,</span>
  44       <span class="special">::</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_default</span><span class="special">);</span>
  45 </pre>
  46 <p>
  47             <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">regex_iterator</span><span class="special">(</span><span class="identifier">s</span><span class="special">.</span><span class="identifier">GetString</span><span class="special">(),</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">GetString</span><span class="special">()</span> <span class="special">+</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">GetLength</span><span class="special">(),</span>
  48             <span class="identifier">e</span><span class="special">,</span>
  49             <span class="identifier">f</span><span class="special">);</span></code>
  50           </p>
  51 <p>
  52             <span class="bold"><strong>Example</strong></span>:
  53           </p>
  54 <pre class="programlisting"><span class="keyword">void</span> <span class="identifier">enumerate_links</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">CString</span><span class="special">&amp;</span> <span class="identifier">html</span><span class="special">)</span>
  55 <span class="special">{</span>
  56    <span class="comment">// enumerate and print all the  links in some HTML text,</span>
  57    <span class="comment">// the expression used is by Andew Lee on www.regxlib.com:</span>
  58    <span class="identifier">boost</span><span class="special">::</span><span class="identifier">tregex</span> <span class="identifier">r</span><span class="special">(</span>
  59       <span class="identifier">__T</span><span class="special">(</span><span class="string">"href=[\"\']((http:\\/\\/|\\.\\/|\\/)?\\w+"</span>
  60           <span class="string">"(\\.\\w+)*(\\/\\w+(\\.\\w+)?)*"</span>
  61           <span class="string">"(\\/|\\?\\w*=\\w*(&amp;\\w*=\\w*)*)?)[\"\']"</span><span class="special">));</span>
  62    <span class="identifier">boost</span><span class="special">::</span><span class="identifier">tregex_iterator</span> <span class="identifier">i</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">make_regex_iterator</span><span class="special">(</span><span class="identifier">html</span><span class="special">,</span> <span class="identifier">r</span><span class="special">)),</span> <span class="identifier">j</span><span class="special">;</span>
  63    <span class="keyword">while</span><span class="special">(</span><span class="identifier">i</span> <span class="special">!=</span> <span class="identifier">j</span><span class="special">)</span>
  64    <span class="special">{</span>
  65       <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="special">(*</span><span class="identifier">i</span><span class="special">)[</span><span class="number">1</span><span class="special">]</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
  66       <span class="special">++</span><span class="identifier">i</span><span class="special">;</span>
  67    <span class="special">}</span>
  68 <span class="special">}</span>
  69 </pre>
  70 <h5>
  71 <a name="boost_regex.ref.non_std_strings.mfc_strings.mfc_iter.h1"></a>
  72             <span class="phrase"><a name="boost_regex.ref.non_std_strings.mfc_strings.mfc_iter.regex_token_iterator_creation_he"></a></span><a class="link" href="mfc_iter.html#boost_regex.ref.non_std_strings.mfc_strings.mfc_iter.regex_token_iterator_creation_he">regex_token_iterator
  73             creation helpers</a>
  74           </h5>
  75 <pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">&gt;</span>
  76 <span class="identifier">regex_token_iterator</span><span class="special">&lt;</span><span class="identifier">charT</span> <span class="keyword">const</span><span class="special">*&gt;</span>
  77    <span class="identifier">make_regex_token_iterator</span><span class="special">(</span>
  78       <span class="keyword">const</span> <span class="identifier">ATL</span><span class="special">::</span><span class="identifier">CSimpleStringT</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">,</span>
  79       <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;&amp;</span> <span class="identifier">e</span><span class="special">,</span>
  80       <span class="keyword">int</span> <span class="identifier">sub</span> <span class="special">=</span> <span class="number">0</span><span class="special">,</span>
  81       <span class="special">::</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_default</span><span class="special">);</span>
  82 </pre>
  83 <p>
  84             <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">regex_token_iterator</span><span class="special">(</span><span class="identifier">s</span><span class="special">.</span><span class="identifier">GetString</span><span class="special">(),</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">GetString</span><span class="special">()</span> <span class="special">+</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">GetLength</span><span class="special">(),</span>
  85             <span class="identifier">e</span><span class="special">,</span>
  86             <span class="identifier">sub</span><span class="special">,</span>
  87             <span class="identifier">f</span><span class="special">);</span></code>
  88           </p>
  89 <pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">&gt;</span>
  90 <span class="identifier">regex_token_iterator</span><span class="special">&lt;</span><span class="identifier">charT</span> <span class="keyword">const</span><span class="special">*&gt;</span>
  91    <span class="identifier">make_regex_token_iterator</span><span class="special">(</span>
  92       <span class="keyword">const</span> <span class="identifier">ATL</span><span class="special">::</span><span class="identifier">CSimpleStringT</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">,</span>
  93       <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;&amp;</span> <span class="identifier">e</span><span class="special">,</span>
  94       <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;&amp;</span> <span class="identifier">subs</span><span class="special">,</span>
  95       <span class="special">::</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_default</span><span class="special">);</span>
  96 </pre>
  97 <p>
  98             <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">regex_token_iterator</span><span class="special">(</span><span class="identifier">s</span><span class="special">.</span><span class="identifier">GetString</span><span class="special">(),</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">GetString</span><span class="special">()</span> <span class="special">+</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">GetLength</span><span class="special">(),</span>
  99             <span class="identifier">e</span><span class="special">,</span>
 100             <span class="identifier">subs</span><span class="special">,</span>
 101             <span class="identifier">f</span><span class="special">);</span></code>
 102           </p>
 103 <pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">charT</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">N</span><span class="special">&gt;</span>
 104 <span class="identifier">regex_token_iterator</span><span class="special">&lt;</span><span class="identifier">charT</span> <span class="keyword">const</span><span class="special">*&gt;</span>
 105    <span class="identifier">make_regex_token_iterator</span><span class="special">(</span>
 106       <span class="keyword">const</span> <span class="identifier">ATL</span><span class="special">::</span><span class="identifier">CSimpleStringT</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;&amp;</span> <span class="identifier">s</span><span class="special">,</span>
 107       <span class="keyword">const</span> <span class="identifier">basic_regex</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">&gt;&amp;</span> <span class="identifier">e</span><span class="special">,</span>
 108       <span class="keyword">const</span> <span class="keyword">int</span> <span class="special">(&amp;</span> <span class="identifier">subs</span><span class="special">)[</span><span class="identifier">N</span><span class="special">],</span>
 109       <span class="special">::</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> <span class="identifier">f</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_default</span><span class="special">);</span>
 110 </pre>
 111 <p>
 112             <span class="bold"><strong>Effects</strong></span>: returns <code class="computeroutput"><span class="identifier">regex_token_iterator</span><span class="special">(</span><span class="identifier">s</span><span class="special">.</span><span class="identifier">GetString</span><span class="special">(),</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">GetString</span><span class="special">()</span> <span class="special">+</span> <span class="identifier">s</span><span class="special">.</span><span class="identifier">GetLength</span><span class="special">(),</span>
 113             <span class="identifier">e</span><span class="special">,</span>
 114             <span class="identifier">subs</span><span class="special">,</span>
 115             <span class="identifier">f</span><span class="special">);</span></code>
 116           </p>
 117 <p>
 118             <span class="bold"><strong>Example</strong></span>:
 119           </p>
 120 <pre class="programlisting"><span class="keyword">void</span> <span class="identifier">enumerate_links2</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">CString</span><span class="special">&amp;</span> <span class="identifier">html</span><span class="special">)</span>
 121 <span class="special">{</span>
 122    <span class="comment">// enumerate and print all the  links in some HTML text,</span>
 123    <span class="comment">// the expression used is by Andew Lee on www.regxlib.com:</span>
 124    <span class="identifier">boost</span><span class="special">::</span><span class="identifier">tregex</span> <span class="identifier">r</span><span class="special">(</span>
 125          <span class="identifier">__T</span><span class="special">(</span><span class="string">"href=[\"\']((http:\\/\\/|\\.\\/|\\/)?\\w+"</span>
 126              <span class="string">"(\\.\\w+)*(\\/\\w+(\\.\\w+)?)*"</span>
 127              <span class="string">"(\\/|\\?\\w*=\\w*(&amp;\\w*=\\w*)*)?)[\"\']"</span><span class="special">));</span>
 128    <span class="identifier">boost</span><span class="special">::</span><span class="identifier">tregex_token_iterator</span> <span class="identifier">i</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">make_regex_token_iterator</span><span class="special">(</span><span class="identifier">html</span><span class="special">,</span> <span class="identifier">r</span><span class="special">,</span> <span class="number">1</span><span class="special">)),</span> <span class="identifier">j</span><span class="special">;</span>
 129    <span class="keyword">while</span><span class="special">(</span><span class="identifier">i</span> <span class="special">!=</span> <span class="identifier">j</span><span class="special">)</span>
 130    <span class="special">{</span>
 131       <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="special">*</span><span class="identifier">i</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
 132       <span class="special">++</span><span class="identifier">i</span><span class="special">;</span>
 133    <span class="special">}</span>
 134 <span class="special">}</span>
 135 </pre>
 136 </div>
 137 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 138 <td align="left"></td>
 139 <td align="right"><div class="copyright-footer">Copyright &#169; 1998-2013 John Maddock<p>
 140         Distributed under the Boost Software License, Version 1.0. (See accompanying
 141         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
 142       </p>
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