ceph/src/boost/libs/locale/doc/html/structboost_1_1locale_1_1utf_1_1utf__traits.html

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  72 <a href="#pub-types">Public Types</a> &#124;
  73 <a href="#pub-static-methods">Static Public Member Functions</a> &#124;
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  75 <a href="structboost_1_1locale_1_1utf_1_1utf__traits-members.html">List of all members</a>  </div>
  76   <div class="headertitle">
  77 <div class="title">boost::locale::utf::utf_traits&lt; CharType, size &gt; Struct Template Reference</div>  </div>
  78 </div><!--header-->
  79 <div class="contents">
  80
  81 <p>UTF Traits class - functions to convert UTF sequences to and from Unicode code points.
  82  <a href="structboost_1_1locale_1_1utf_1_1utf__traits.html#details">More...</a></p>
  83
  84 <p><code>#include &lt;<a class="el" href="utf_8hpp_source.html">boost/locale/utf.hpp</a>&gt;</code></p>
  85 <table class="memberdecls">
  86 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
  87 Public Types</h2></td></tr>
  88 <tr class="memitem:accca9dc2d8fe018b9b5640c48e3470e4"><td class="memItemLeft" align="right" valign="top">typedef CharType&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a></td></tr>
  89 <tr class="separator:accca9dc2d8fe018b9b5640c48e3470e4"><td class="memSeparator" colspan="2">&#160;</td></tr>
  90 </table><table class="memberdecls">
  91 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
  92 Static Public Member Functions</h2></td></tr>
  93 <tr class="memitem:a9b6b01fa6705ba67ac78359ddee03213"><td class="memTemplParams" colspan="2">template&lt;typename Iterator &gt; </td></tr>
  94 <tr class="memitem:a9b6b01fa6705ba67ac78359ddee03213"><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a>&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a9b6b01fa6705ba67ac78359ddee03213">decode</a> (Iterator &amp;p, Iterator e)</td></tr>
  95 <tr class="separator:a9b6b01fa6705ba67ac78359ddee03213"><td class="memSeparator" colspan="2">&#160;</td></tr>
  96 <tr class="memitem:a26c106ec8816f48431f882017ab46763"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a26c106ec8816f48431f882017ab46763">width</a> (<a class="el" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> value)</td></tr>
  97 <tr class="separator:a26c106ec8816f48431f882017ab46763"><td class="memSeparator" colspan="2">&#160;</td></tr>
  98 <tr class="memitem:a8a6b72ba87a817652f522018df51a9a7"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8a6b72ba87a817652f522018df51a9a7">trail_length</a> (<a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> c)</td></tr>
  99 <tr class="separator:a8a6b72ba87a817652f522018df51a9a7"><td class="memSeparator" colspan="2">&#160;</td></tr>
 100 <tr class="memitem:ae2cb78fcb8a58bed3e0ce1d6528a719a"><td class="memItemLeft" align="right" valign="top">static bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#ae2cb78fcb8a58bed3e0ce1d6528a719a">is_trail</a> (<a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> c)</td></tr>
 101 <tr class="separator:ae2cb78fcb8a58bed3e0ce1d6528a719a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 102 <tr class="memitem:a19789c4c26c8d9f576de5272f3d41a11"><td class="memItemLeft" align="right" valign="top">static bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a19789c4c26c8d9f576de5272f3d41a11">is_lead</a> (<a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a> c)</td></tr>
 103 <tr class="separator:a19789c4c26c8d9f576de5272f3d41a11"><td class="memSeparator" colspan="2">&#160;</td></tr>
 104 <tr class="memitem:acd59f628af084f800f8a86cdd8124fd8"><td class="memTemplParams" colspan="2">template&lt;typename Iterator &gt; </td></tr>
 105 <tr class="memitem:acd59f628af084f800f8a86cdd8124fd8"><td class="memTemplItemLeft" align="right" valign="top">static Iterator&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#acd59f628af084f800f8a86cdd8124fd8">encode</a> (<a class="el" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> value, Iterator out)</td></tr>
 106 <tr class="separator:acd59f628af084f800f8a86cdd8124fd8"><td class="memSeparator" colspan="2">&#160;</td></tr>
 107 <tr class="memitem:a8ff625b2c19b0d4132f7ec9e6303cb36"><td class="memTemplParams" colspan="2">template&lt;typename Iterator &gt; </td></tr>
 108 <tr class="memitem:a8ff625b2c19b0d4132f7ec9e6303cb36"><td class="memTemplItemLeft" align="right" valign="top">static <a class="el" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a>&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#a8ff625b2c19b0d4132f7ec9e6303cb36">decode_valid</a> (Iterator &amp;p)</td></tr>
 109 <tr class="separator:a8ff625b2c19b0d4132f7ec9e6303cb36"><td class="memSeparator" colspan="2">&#160;</td></tr>
 110 </table><table class="memberdecls">
 111 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-attribs"></a>
 112 Static Public Attributes</h2></td></tr>
 113 <tr class="memitem:abb4cb63a924d19505c2cb6e930c68a13"><td class="memItemLeft" align="right" valign="top">static const int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#abb4cb63a924d19505c2cb6e930c68a13">max_width</a></td></tr>
 114 <tr class="separator:abb4cb63a924d19505c2cb6e930c68a13"><td class="memSeparator" colspan="2">&#160;</td></tr>
 115 </table>
 116 <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
 117 <div class="textblock"><h3>template&lt;typename CharType, int size = sizeof(CharType)&gt;<br/>
 118 struct boost::locale::utf::utf_traits&lt; CharType, size &gt;</h3>
 119
 120 <p>UTF Traits class - functions to convert UTF sequences to and from Unicode code points. </p>
 121 </div><h2 class="groupheader">Member Typedef Documentation</h2>
 122 <a class="anchor" id="accca9dc2d8fe018b9b5640c48e3470e4"></a>
 123 <div class="memitem">
 124 <div class="memproto">
 125 <div class="memtemplate">
 126 template&lt;typename CharType, int size = sizeof(CharType)&gt; </div>
 127       <table class="memname">
 128         <tr>
 129           <td class="memname">typedef CharType <a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">boost::locale::utf::utf_traits</a>&lt; CharType, size &gt;::<a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a></td>
 130         </tr>
 131       </table>
 132 </div><div class="memdoc">
 133 <p>The type of the character </p>
 134
 135 </div>
 136 </div>
 137 <h2 class="groupheader">Member Function Documentation</h2>
 138 <a class="anchor" id="a9b6b01fa6705ba67ac78359ddee03213"></a>
 139 <div class="memitem">
 140 <div class="memproto">
 141 <div class="memtemplate">
 142 template&lt;typename CharType, int size = sizeof(CharType)&gt; </div>
 143 <div class="memtemplate">
 144 template&lt;typename Iterator &gt; </div>
 145 <table class="mlabels">
 146   <tr>
 147   <td class="mlabels-left">
 148       <table class="memname">
 149         <tr>
 150           <td class="memname">static <a class="el" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">boost::locale::utf::utf_traits</a>&lt; CharType, size &gt;::decode </td>
 151           <td>(</td>
 152           <td class="paramtype">Iterator &amp;&#160;</td>
 153           <td class="paramname"><em>p</em>, </td>
 154         </tr>
 155         <tr>
 156           <td class="paramkey"></td>
 157           <td></td>
 158           <td class="paramtype">Iterator&#160;</td>
 159           <td class="paramname"><em>e</em>&#160;</td>
 160         </tr>
 161         <tr>
 162           <td></td>
 163           <td>)</td>
 164           <td></td><td></td>
 165         </tr>
 166       </table>
 167   </td>
 168   <td class="mlabels-right">
 169 <span class="mlabels"><span class="mlabel">static</span></span>  </td>
 170   </tr>
 171 </table>
 172 </div><div class="memdoc">
 173 <p>Read one code point from the range [p,e) and return it.</p>
 174 <ul>
 175 <li>If the sequence that was read is incomplete sequence returns <a class="el" href="namespaceboost_1_1locale_1_1utf.html#a20dbe458fd18229a0e6c09888d031b38">incomplete</a>,</li>
 176 <li>If illegal sequence detected returns <a class="el" href="namespaceboost_1_1locale_1_1utf.html#a30010000878c7732340bda8956b844fb">illegal</a></li>
 177 </ul>
 178 <p>Requirements</p>
 179 <ul>
 180 <li>Iterator is valid input iterator</li>
 181 </ul>
 182 <p>Postconditions</p>
 183 <ul>
 184 <li>p points to the last consumed character </li>
 185 </ul>
 186
 187 </div>
 188 </div>
 189 <a class="anchor" id="a8ff625b2c19b0d4132f7ec9e6303cb36"></a>
 190 <div class="memitem">
 191 <div class="memproto">
 192 <div class="memtemplate">
 193 template&lt;typename CharType, int size = sizeof(CharType)&gt; </div>
 194 <div class="memtemplate">
 195 template&lt;typename Iterator &gt; </div>
 196 <table class="mlabels">
 197   <tr>
 198   <td class="mlabels-left">
 199       <table class="memname">
 200         <tr>
 201           <td class="memname">static <a class="el" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a> <a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">boost::locale::utf::utf_traits</a>&lt; CharType, size &gt;::decode_valid </td>
 202           <td>(</td>
 203           <td class="paramtype">Iterator &amp;&#160;</td>
 204           <td class="paramname"><em>p</em></td><td>)</td>
 205           <td></td>
 206         </tr>
 207       </table>
 208   </td>
 209   <td class="mlabels-right">
 210 <span class="mlabels"><span class="mlabel">static</span></span>  </td>
 211   </tr>
 212 </table>
 213 </div><div class="memdoc">
 214 <p>Decodes valid UTF sequence that is pointed by p into code point.</p>
 215 <p>If the sequence is invalid or points to end the behavior is undefined </p>
 216
 217 </div>
 218 </div>
 219 <a class="anchor" id="acd59f628af084f800f8a86cdd8124fd8"></a>
 220 <div class="memitem">
 221 <div class="memproto">
 222 <div class="memtemplate">
 223 template&lt;typename CharType, int size = sizeof(CharType)&gt; </div>
 224 <div class="memtemplate">
 225 template&lt;typename Iterator &gt; </div>
 226 <table class="mlabels">
 227   <tr>
 228   <td class="mlabels-left">
 229       <table class="memname">
 230         <tr>
 231           <td class="memname">static Iterator <a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">boost::locale::utf::utf_traits</a>&lt; CharType, size &gt;::encode </td>
 232           <td>(</td>
 233           <td class="paramtype"><a class="el" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a>&#160;</td>
 234           <td class="paramname"><em>value</em>, </td>
 235         </tr>
 236         <tr>
 237           <td class="paramkey"></td>
 238           <td></td>
 239           <td class="paramtype">Iterator&#160;</td>
 240           <td class="paramname"><em>out</em>&#160;</td>
 241         </tr>
 242         <tr>
 243           <td></td>
 244           <td>)</td>
 245           <td></td><td></td>
 246         </tr>
 247       </table>
 248   </td>
 249   <td class="mlabels-right">
 250 <span class="mlabels"><span class="mlabel">static</span></span>  </td>
 251   </tr>
 252 </table>
 253 </div><div class="memdoc">
 254 <p>Convert valid Unicode code point <em>value</em> to the UTF sequence.</p>
 255 <p>Requirements:</p>
 256 <ul>
 257 <li><em>value</em> is valid code point</li>
 258 <li><em>out</em> is an output iterator should be able to accept at least width(value) units</li>
 259 </ul>
 260 <p>Returns the iterator past the last written code unit. </p>
 261
 262 </div>
 263 </div>
 264 <a class="anchor" id="a19789c4c26c8d9f576de5272f3d41a11"></a>
 265 <div class="memitem">
 266 <div class="memproto">
 267 <div class="memtemplate">
 268 template&lt;typename CharType, int size = sizeof(CharType)&gt; </div>
 269 <table class="mlabels">
 270   <tr>
 271   <td class="mlabels-left">
 272       <table class="memname">
 273         <tr>
 274           <td class="memname">static bool <a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">boost::locale::utf::utf_traits</a>&lt; CharType, size &gt;::is_lead </td>
 275           <td>(</td>
 276           <td class="paramtype"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a>&#160;</td>
 277           <td class="paramname"><em>c</em></td><td>)</td>
 278           <td></td>
 279         </tr>
 280       </table>
 281   </td>
 282   <td class="mlabels-right">
 283 <span class="mlabels"><span class="mlabel">static</span></span>  </td>
 284   </tr>
 285 </table>
 286 </div><div class="memdoc">
 287 <p>Returns true if c is lead code unit, always true of UTF-32 </p>
 288
 289 </div>
 290 </div>
 291 <a class="anchor" id="ae2cb78fcb8a58bed3e0ce1d6528a719a"></a>
 292 <div class="memitem">
 293 <div class="memproto">
 294 <div class="memtemplate">
 295 template&lt;typename CharType, int size = sizeof(CharType)&gt; </div>
 296 <table class="mlabels">
 297   <tr>
 298   <td class="mlabels-left">
 299       <table class="memname">
 300         <tr>
 301           <td class="memname">static bool <a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">boost::locale::utf::utf_traits</a>&lt; CharType, size &gt;::is_trail </td>
 302           <td>(</td>
 303           <td class="paramtype"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a>&#160;</td>
 304           <td class="paramname"><em>c</em></td><td>)</td>
 305           <td></td>
 306         </tr>
 307       </table>
 308   </td>
 309   <td class="mlabels-right">
 310 <span class="mlabels"><span class="mlabel">static</span></span>  </td>
 311   </tr>
 312 </table>
 313 </div><div class="memdoc">
 314 <p>Returns true if c is trail code unit, always false for UTF-32 </p>
 315
 316 </div>
 317 </div>
 318 <a class="anchor" id="a8a6b72ba87a817652f522018df51a9a7"></a>
 319 <div class="memitem">
 320 <div class="memproto">
 321 <div class="memtemplate">
 322 template&lt;typename CharType, int size = sizeof(CharType)&gt; </div>
 323 <table class="mlabels">
 324   <tr>
 325   <td class="mlabels-left">
 326       <table class="memname">
 327         <tr>
 328           <td class="memname">static int <a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">boost::locale::utf::utf_traits</a>&lt; CharType, size &gt;::trail_length </td>
 329           <td>(</td>
 330           <td class="paramtype"><a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html#accca9dc2d8fe018b9b5640c48e3470e4">char_type</a>&#160;</td>
 331           <td class="paramname"><em>c</em></td><td>)</td>
 332           <td></td>
 333         </tr>
 334       </table>
 335   </td>
 336   <td class="mlabels-right">
 337 <span class="mlabels"><span class="mlabel">static</span></span>  </td>
 338   </tr>
 339 </table>
 340 </div><div class="memdoc">
 341 <p>Get the size of the trail part of variable length encoded sequence.</p>
 342 <p>Returns -1 if C is not valid lead character </p>
 343
 344 </div>
 345 </div>
 346 <a class="anchor" id="a26c106ec8816f48431f882017ab46763"></a>
 347 <div class="memitem">
 348 <div class="memproto">
 349 <div class="memtemplate">
 350 template&lt;typename CharType, int size = sizeof(CharType)&gt; </div>
 351 <table class="mlabels">
 352   <tr>
 353   <td class="mlabels-left">
 354       <table class="memname">
 355         <tr>
 356           <td class="memname">static int <a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">boost::locale::utf::utf_traits</a>&lt; CharType, size &gt;::width </td>
 357           <td>(</td>
 358           <td class="paramtype"><a class="el" href="namespaceboost_1_1locale_1_1utf.html#a068111a6b9d6d465a63893ed5c05e2f8">code_point</a>&#160;</td>
 359           <td class="paramname"><em>value</em></td><td>)</td>
 360           <td></td>
 361         </tr>
 362       </table>
 363   </td>
 364   <td class="mlabels-right">
 365 <span class="mlabels"><span class="mlabel">static</span></span>  </td>
 366   </tr>
 367 </table>
 368 </div><div class="memdoc">
 369 <p>The width of specific code point in the code units.</p>
 370 <p>Requirement: value is a valid Unicode code point Returns value in range [1..max_width] </p>
 371
 372 </div>
 373 </div>
 374 <h2 class="groupheader">Member Data Documentation</h2>
 375 <a class="anchor" id="abb4cb63a924d19505c2cb6e930c68a13"></a>
 376 <div class="memitem">
 377 <div class="memproto">
 378 <div class="memtemplate">
 379 template&lt;typename CharType, int size = sizeof(CharType)&gt; </div>
 380 <table class="mlabels">
 381   <tr>
 382   <td class="mlabels-left">
 383       <table class="memname">
 384         <tr>
 385           <td class="memname">const int <a class="el" href="structboost_1_1locale_1_1utf_1_1utf__traits.html">boost::locale::utf::utf_traits</a>&lt; CharType, size &gt;::max_width</td>
 386         </tr>
 387       </table>
 388   </td>
 389   <td class="mlabels-right">
 390 <span class="mlabels"><span class="mlabel">static</span></span>  </td>
 391   </tr>
 392 </table>
 393 </div><div class="memdoc">
 394 <p>Maximal width of valid sequence in the code units:</p>
 395 <ul>
 396 <li>UTF-8 - 4</li>
 397 <li>UTF-16 - 2</li>
 398 <li>UTF-32 - 1 </li>
 399 </ul>
 400
 401 </div>
 402 </div>
 403 <hr/>The documentation for this struct was generated from the following file:<ul>
 404 <li>boost/locale/<a class="el" href="utf_8hpp_source.html">utf.hpp</a></li>
 405 </ul>
 406 </div><!-- contents -->
 407 </div><!-- doc-content -->
 408
 409     <li class="footer">
 410 &copy; Copyright 2009-2012 Artyom Beilis,  Distributed under the <a href="http://www.boost.org/LICENSE_1_0.txt">Boost Software License</a>, Version 1.0.
 411     </li>
 412    </ul>
 413  </div>
 414 </body>
 415 </html>