source: NonGTP/Xerces/xerces/doc/html/apiDocs/Base64_8hpp-source.html @ 358

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44<hr><h1>Base64.hpp</h1><a href="Base64_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="comment">/*</font>
4500002 <font class="comment"> * Copyright 2001,2004 The Apache Software Foundation.</font>
4600003 <font class="comment"> * </font>
4700004 <font class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</font>
4800005 <font class="comment"> * you may not use this file except in compliance with the License.</font>
4900006 <font class="comment"> * You may obtain a copy of the License at</font>
5000007 <font class="comment"> * </font>
5100008 <font class="comment"> *      http://www.apache.org/licenses/LICENSE-2.0</font>
5200009 <font class="comment"> * </font>
5300010 <font class="comment"> * Unless required by applicable law or agreed to in writing, software</font>
5400011 <font class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</font>
5500012 <font class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</font>
5600013 <font class="comment"> * See the License for the specific language governing permissions and</font>
5700014 <font class="comment"> * limitations under the License.</font>
5800015 <font class="comment"> */</font>
5900016
6000017 <font class="comment">/*</font>
6100018 <font class="comment"> * $Id: Base64.hpp,v 1.13 2004/09/08 13:56:21 peiyongz Exp $</font>
6200019 <font class="comment"> */</font>
6300020
6400021 <font class="preprocessor">#ifndef BASE64_HPP</font>
6500022 <font class="preprocessor"></font><font class="preprocessor">#define BASE64_HPP</font>
6600023 <font class="preprocessor"></font>
6700024 <font class="preprocessor">#include &lt;<a class="code" href="XercesDefs_8hpp.html">xercesc/util/XercesDefs.hpp</a>&gt;</font>
6800025 <font class="preprocessor">#include &lt;<a class="code" href="XMLUniDefs_8hpp.html">xercesc/util/XMLUniDefs.hpp</a>&gt;</font>
6900026 <font class="preprocessor">#include &lt;<a class="code" href="MemoryManager_8hpp.html">xercesc/framework/MemoryManager.hpp</a>&gt;</font>
7000027
7100028 <a class="code" href="XercesDefs_8hpp.html#a2">XERCES_CPP_NAMESPACE_BEGIN</a>
7200029
7300030 <font class="comment">//</font>
7400031 <font class="comment">// This class provides encode/decode for RFC 2045 Base64 as</font>
7500032 <font class="comment">// defined by RFC 2045, N. Freed and N. Borenstein.</font>
7600033 <font class="comment">// RFC 2045: Multipurpose Internet Mail Extensions (MIME)</font>
7700034 <font class="comment">// Part One: Format of Internet Message Bodies. Reference</font>
7800035 <font class="comment">// 1996 Available at: http://www.ietf.org/rfc/rfc2045.txt</font>
7900036 <font class="comment">// This class is used by XML Schema binary format validation</font>
8000037 <font class="comment">//</font>
8100038 <font class="comment">//</font>
82<a name="l00039"></a><a class="code" href="classBase64.html">00039</a> <font class="keyword">class </font><a class="code" href="XercesDefs_8hpp.html#a8"></a> <a class="code" href="classBase64.html">Base64</a>
8300040 {
8400041 <font class="keyword">public</font> :
8500042
86<a name="l00043"></a><a class="code" href="classBase64.html#s2">00043</a>     <font class="keyword">enum</font> Conformance
8700044     {
8800045         Conf_RFC2045
8900046       , Conf_Schema
9000047     };
9100048
9200050
9300069     <font class="keyword">static</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>* encode(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>* <font class="keyword">const</font> inputData
9400070                          , <font class="keyword">const</font> <font class="keywordtype">unsigned</font> <font class="keywordtype">int</font>   inputLength
9500071                          , <font class="keywordtype">unsigned</font> <font class="keywordtype">int</font>*        outputLength
9600072                          , <a class="code" href="classMemoryManager.html">MemoryManager</a>* <font class="keyword">const</font> memMgr = 0);
9700073
9800092     <font class="keyword">static</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>* decode(
9900093                            <font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>*        <font class="keyword">const</font>   inputData
10000094                          ,       <font class="keywordtype">unsigned</font> <font class="keywordtype">int</font>*           decodedLength
10100095                          ,       <a class="code" href="classMemoryManager.html">MemoryManager</a>*  <font class="keyword">const</font>   memMgr = 0
10200096                          ,       Conformance             conform = Conf_RFC2045
10300097                           );
10400098
10500117     <font class="keyword">static</font> XMLCh* decode(
10600118                          <font class="keyword">const</font> XMLCh*          <font class="keyword">const</font>    inputData
10700119                        ,       <font class="keywordtype">unsigned</font> <font class="keywordtype">int</font>*            decodedLength
10800120                        ,       <a class="code" href="classMemoryManager.html">MemoryManager</a>*  <font class="keyword">const</font>    memMgr = 0
10900121                        ,       Conformance              conform = Conf_RFC2045
11000122                         );
11100123
11200136     <font class="keyword">static</font> <font class="keywordtype">int</font> getDataLength(
11300137                              <font class="keyword">const</font> XMLCh*         <font class="keyword">const</font>  inputData
11400138                             ,      <a class="code" href="classMemoryManager.html">MemoryManager</a>* <font class="keyword">const</font>  memMgr = 0
11500139                             ,      Conformance           conform = Conf_RFC2045
11600140                              );
11700141
11800143
11900159     <font class="keyword">static</font> XMLCh* getCanonicalRepresentation
12000160                   (
12100161                       <font class="keyword">const</font> XMLCh*          <font class="keyword">const</font> inputData
12200162                     ,       <a class="code" href="classMemoryManager.html">MemoryManager</a>*  <font class="keyword">const</font> memMgr = 0
12300163                     ,       Conformance           conform = Conf_RFC2045
12400164                   );
12500165
12600166 <font class="keyword">private</font> :
12700167
12800168     <font class="comment">// -----------------------------------------------------------------------</font>
12900169     <font class="comment">//  Helper methods</font>
13000170     <font class="comment">// -----------------------------------------------------------------------</font>
13100171
13200172     <font class="keyword">static</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>* decode(
13300173                            <font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>*        <font class="keyword">const</font>   inputData
13400174                          ,       <font class="keywordtype">unsigned</font> <font class="keywordtype">int</font>*           outputLength
13500175                          ,       <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>*&amp;               canRepData
13600176                          ,       <a class="code" href="classMemoryManager.html">MemoryManager</a>*  <font class="keyword">const</font>   memMgr = 0
13700177                          ,       Conformance             conform = Conf_RFC2045
13800178                           );
13900179
14000180     <font class="keyword">static</font> <font class="keywordtype">void</font> init();
14100181
14200182     <font class="keyword">static</font> <font class="keywordtype">bool</font> isData(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; octet);
14300183     <font class="keyword">static</font> <font class="keywordtype">bool</font> isPad(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; octet);
14400184
14500185     <font class="keyword">static</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a> set1stOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;, <font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;);
14600186     <font class="keyword">static</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a> set2ndOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;, <font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;);
14700187     <font class="keyword">static</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a> set3rdOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;, <font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;);
14800188
14900189     <font class="keyword">static</font> <font class="keywordtype">void</font> split1stOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;);
15000190     <font class="keyword">static</font> <font class="keywordtype">void</font> split2ndOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;);
15100191     <font class="keyword">static</font> <font class="keywordtype">void</font> split3rdOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp;);
15200192
15300193     <font class="comment">// -----------------------------------------------------------------------</font>
15400194     <font class="comment">//  Unimplemented constructors and operators</font>
15500195     <font class="comment">// -----------------------------------------------------------------------</font>
15600196     <a class="code" href="classBase64.html">Base64</a>();
15700197     <a class="code" href="classBase64.html">Base64</a>(<font class="keyword">const</font> <a class="code" href="classBase64.html">Base64</a>&amp;);
15800198
15900199     <font class="comment">// -----------------------------------------------------------------------</font>
16000200     <font class="comment">//  Private data members</font>
16100201     <font class="comment">//</font>
16200202     <font class="comment">//  base64Alphabet</font>
16300203     <font class="comment">//     The Base64 alphabet (see RFC 2045).</font>
16400204     <font class="comment">//</font>
16500205     <font class="comment">//  base64Padding</font>
16600206     <font class="comment">//     Padding character (see RFC 2045).</font>
16700207     <font class="comment">//</font>
16800208     <font class="comment">//  base64Inverse</font>
16900209     <font class="comment">//     Table used in decoding base64.</font>
17000210     <font class="comment">//</font>
17100211     <font class="comment">//  isInitialized</font>
17200212     <font class="comment">//     Set once base64Inverse is initalized.</font>
17300213     <font class="comment">//</font>
17400214     <font class="comment">//  quadsPerLine</font>
17500215     <font class="comment">//     Number of quadruplets per one line. The encoded output</font>
17600216     <font class="comment">//     stream must be represented in lines of no more</font>
17700217     <font class="comment">//     than 19 quadruplets each.</font>
17800218     <font class="comment">//</font>
17900219     <font class="comment">// -----------------------------------------------------------------------</font>
18000220
18100221     <font class="keyword">static</font> <font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>  base64Alphabet[];
18200222     <font class="keyword">static</font> <font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>  base64Padding;
18300223
18400224     <font class="keyword">static</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>  base64Inverse[];
18500225     <font class="keyword">static</font> <font class="keywordtype">bool</font>  isInitialized;
18600226
18700227     <font class="keyword">static</font> <font class="keyword">const</font> <font class="keywordtype">unsigned</font> <font class="keywordtype">int</font>  quadsPerLine;
18800228 };
18900229
19000230 <font class="comment">// -----------------------------------------------------------------------</font>
19100231 <font class="comment">//  Helper methods</font>
19200232 <font class="comment">// -----------------------------------------------------------------------</font>
19300233 <font class="keyword">inline</font> <font class="keywordtype">bool</font> Base64::isPad(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; octet)
19400234 {
19500235     <font class="keywordflow">return</font> ( octet == base64Padding );
19600236 }
19700237
19800238 <font class="keyword">inline</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a> Base64::set1stOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b1, <font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b2)
19900239 {
20000240     <font class="keywordflow">return</font> (( b1 &lt;&lt; 2 ) | ( b2 &gt;&gt; 4 ));
20100241 }
20200242
20300243 <font class="keyword">inline</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a> Base64::set2ndOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b2, <font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b3)
20400244 {
20500245     <font class="keywordflow">return</font> (( b2 &lt;&lt; 4 ) | ( b3 &gt;&gt; 2 ));
20600246 }
20700247
20800248 <font class="keyword">inline</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a> Base64::set3rdOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b3, <font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b4)
20900249 {
21000250     <font class="keywordflow">return</font> (( b3 &lt;&lt; 6 ) | b4 );
21100251 }
21200252
21300253 <font class="keyword">inline</font> <font class="keywordtype">void</font> Base64::split1stOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; ch, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b1, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b2) {
21400254     b1 = ch &gt;&gt; 2;
21500255     b2 = ( ch &amp; 0x3 ) &lt;&lt; 4;
21600256 }
21700257
21800258 <font class="keyword">inline</font> <font class="keywordtype">void</font> Base64::split2ndOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; ch, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b2, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b3) {
21900259     b2 |= ch &gt;&gt; 4;  <font class="comment">// combine with previous value</font>
22000260     b3 = ( ch &amp; 0xf ) &lt;&lt; 2;
22100261 }
22200262
22300263 <font class="keyword">inline</font> <font class="keywordtype">void</font> Base64::split3rdOctet(<font class="keyword">const</font> <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; ch, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b3, <a class="code" href="XercesDefs_8hpp.html#a16">XMLByte</a>&amp; b4) {
22400264     b3 |= ch &gt;&gt; 6;  <font class="comment">// combine with previous value</font>
22500265     b4 = ( ch &amp; 0x3f );
22600266 }
22700267
22800268 <a class="code" href="XercesDefs_8hpp.html#a3">XERCES_CPP_NAMESPACE_END</a>
22900269
23000270 <font class="preprocessor">#endif</font>
231</pre></div>    </FONT></TD></TR></TABLE><BR>
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