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<h1>Base64.hpp</h1><a href="Base64_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 <span class="comment">/*</span>
00002 <span class="comment"> * Copyright 2001,2004 The Apache Software Foundation.</span>
00003 <span class="comment"> * </span>
00004 <span class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</span>
00005 <span class="comment"> * you may not use this file except in compliance with the License.</span>
00006 <span class="comment"> * You may obtain a copy of the License at</span>
00007 <span class="comment"> * </span>
00008 <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span>
00009 <span class="comment"> * </span>
00010 <span class="comment"> * Unless required by applicable law or agreed to in writing, software</span>
00011 <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
00012 <span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
00013 <span class="comment"> * See the License for the specific language governing permissions and</span>
00014 <span class="comment"> * limitations under the License.</span>
00015 <span class="comment"> */</span>
00016
00017 <span class="comment">/*</span>
00018 <span class="comment"> * $Id: Base64.hpp 231219 2005-08-10 12:28:35Z amassari $</span>
00019 <span class="comment"> */</span>
00020
00021 <span class="preprocessor">#ifndef BASE64_HPP</span>
00022 <span class="preprocessor"></span><span class="preprocessor">#define BASE64_HPP</span>
00023 <span class="preprocessor"></span>
00024 <span class="preprocessor">#include <<a class="code" href="XercesDefs_8hpp.html">xercesc/util/XercesDefs.hpp</a>></span>
00025 <span class="preprocessor">#include <<a class="code" href="XMLUniDefs_8hpp.html">xercesc/util/XMLUniDefs.hpp</a>></span>
00026 <span class="preprocessor">#include <<a class="code" href="MemoryManager_8hpp.html">xercesc/framework/MemoryManager.hpp</a>></span>
00027
00028 <a class="code" href="XercesDefs_8hpp.html#a3">XERCES_CPP_NAMESPACE_BEGIN</a>
00029
00030 <span class="comment">//</span>
00031 <span class="comment">// This class provides encode/decode for RFC 2045 Base64 as</span>
00032 <span class="comment">// defined by RFC 2045, N. Freed and N. Borenstein.</span>
00033 <span class="comment">// RFC 2045: Multipurpose Internet Mail Extensions (MIME)</span>
00034 <span class="comment">// Part One: Format of Internet Message Bodies. Reference</span>
00035 <span class="comment">// 1996 Available at: http://www.ietf.org/rfc/rfc2045.txt</span>
00036 <span class="comment">// This class is used by XML Schema binary format validation</span>
00037 <span class="comment">//</span>
00038 <span class="comment">//</span>
<a name="l00039"></a><a class="code" href="classBase64.html">00039</a> <span class="keyword">class </span><a class="code" href="XercesDefs_8hpp.html#a9"></a> Base64
00040 {
00041 <span class="keyword">public</span> :
00042
<a name="l00043"></a><a class="code" href="classBase64.html#w2">00043</a> <span class="keyword">enum</span> Conformance
00044 {
00045 Conf_RFC2045
00046 , Conf_Schema
00047 };
00048
00050
00069 <span class="keyword">static</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a>* encode(<span class="keyword">const</span> XMLByte* <span class="keyword">const</span> inputData
00070 , <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> inputLength
00071 , <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>* outputLength
00072 , <a class="code" href="classMemoryManager.html">MemoryManager</a>* <span class="keyword">const</span> memMgr = 0);
00073
00096 <span class="keyword">static</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a>* decode(
00097 <span class="keyword">const</span> XMLByte* <span class="keyword">const</span> inputData
00098 , <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>* decodedLength
00099 , <a class="code" href="classMemoryManager.html">MemoryManager</a>* <span class="keyword">const</span> memMgr = 0
00100 , Conformance conform = Conf_RFC2045
00101 );
00102
00127 <span class="keyword">static</span> XMLCh* decode(
00128 <span class="keyword">const</span> XMLCh* <span class="keyword">const</span> inputData
00129 , <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>* decodedLength
00130 , <a class="code" href="classMemoryManager.html">MemoryManager</a>* <span class="keyword">const</span> memMgr = 0
00131 , Conformance conform = Conf_RFC2045
00132 );
00133
00156 <span class="keyword">static</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a>* decodeToXMLByte(
00157 <span class="keyword">const</span> XMLCh* <span class="keyword">const</span> inputData
00158 , <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>* decodedLength
00159 , <a class="code" href="classMemoryManager.html">MemoryManager</a>* <span class="keyword">const</span> memMgr = 0
00160 , Conformance conform = Conf_RFC2045
00161 );
00174 <span class="keyword">static</span> <span class="keywordtype">int</span> getDataLength(
00175 <span class="keyword">const</span> XMLCh* <span class="keyword">const</span> inputData
00176 , <a class="code" href="classMemoryManager.html">MemoryManager</a>* <span class="keyword">const</span> memMgr = 0
00177 , Conformance conform = Conf_RFC2045
00178 );
00179
00181
00197 <span class="keyword">static</span> XMLCh* getCanonicalRepresentation
00198 (
00199 <span class="keyword">const</span> XMLCh* <span class="keyword">const</span> inputData
00200 , <a class="code" href="classMemoryManager.html">MemoryManager</a>* <span class="keyword">const</span> memMgr = 0
00201 , Conformance conform = Conf_RFC2045
00202 );
00203
00204 <span class="keyword">private</span> :
00205
00206 <span class="comment">// -----------------------------------------------------------------------</span>
00207 <span class="comment">// Helper methods</span>
00208 <span class="comment">// -----------------------------------------------------------------------</span>
00209
00210 <span class="keyword">static</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a>* decode(
00211 <span class="keyword">const</span> XMLByte* <span class="keyword">const</span> inputData
00212 , <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>* outputLength
00213 , XMLByte*& canRepData
00214 , <a class="code" href="classMemoryManager.html">MemoryManager</a>* <span class="keyword">const</span> memMgr = 0
00215 , Conformance conform = Conf_RFC2045
00216 );
00217
00218 <span class="keyword">static</span> <span class="keywordtype">void</span> init();
00219
00220 <span class="keyword">static</span> <span class="keywordtype">bool</span> isData(<span class="keyword">const</span> XMLByte& octet);
00221 <span class="keyword">static</span> <span class="keywordtype">bool</span> isPad(<span class="keyword">const</span> XMLByte& octet);
00222
00223 <span class="keyword">static</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a> set1stOctet(<span class="keyword">const</span> XMLByte&, <span class="keyword">const</span> XMLByte&);
00224 <span class="keyword">static</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a> set2ndOctet(<span class="keyword">const</span> XMLByte&, <span class="keyword">const</span> XMLByte&);
00225 <span class="keyword">static</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a> set3rdOctet(<span class="keyword">const</span> XMLByte&, <span class="keyword">const</span> XMLByte&);
00226
00227 <span class="keyword">static</span> <span class="keywordtype">void</span> split1stOctet(<span class="keyword">const</span> XMLByte&, XMLByte&, XMLByte&);
00228 <span class="keyword">static</span> <span class="keywordtype">void</span> split2ndOctet(<span class="keyword">const</span> XMLByte&, XMLByte&, XMLByte&);
00229 <span class="keyword">static</span> <span class="keywordtype">void</span> split3rdOctet(<span class="keyword">const</span> XMLByte&, XMLByte&, XMLByte&);
00230
00231 <span class="comment">// -----------------------------------------------------------------------</span>
00232 <span class="comment">// Unimplemented constructors and operators</span>
00233 <span class="comment">// -----------------------------------------------------------------------</span>
00234 Base64();
00235 Base64(<span class="keyword">const</span> Base64&);
00236
00237 <span class="comment">// -----------------------------------------------------------------------</span>
00238 <span class="comment">// Private data members</span>
00239 <span class="comment">//</span>
00240 <span class="comment">// base64Alphabet</span>
00241 <span class="comment">// The Base64 alphabet (see RFC 2045).</span>
00242 <span class="comment">//</span>
00243 <span class="comment">// base64Padding</span>
00244 <span class="comment">// Padding character (see RFC 2045).</span>
00245 <span class="comment">//</span>
00246 <span class="comment">// base64Inverse</span>
00247 <span class="comment">// Table used in decoding base64.</span>
00248 <span class="comment">//</span>
00249 <span class="comment">// isInitialized</span>
00250 <span class="comment">// Set once base64Inverse is initalized.</span>
00251 <span class="comment">//</span>
00252 <span class="comment">// quadsPerLine</span>
00253 <span class="comment">// Number of quadruplets per one line. The encoded output</span>
00254 <span class="comment">// stream must be represented in lines of no more</span>
00255 <span class="comment">// than 19 quadruplets each.</span>
00256 <span class="comment">//</span>
00257 <span class="comment">// -----------------------------------------------------------------------</span>
00258
00259 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a> base64Alphabet[];
00260 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a> base64Padding;
00261
00262 <span class="keyword">static</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a> base64Inverse[];
00263 <span class="keyword">static</span> <span class="keywordtype">bool</span> isInitialized;
00264
00265 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> quadsPerLine;
00266 };
00267
00268 <span class="comment">// -----------------------------------------------------------------------</span>
00269 <span class="comment">// Helper methods</span>
00270 <span class="comment">// -----------------------------------------------------------------------</span>
00271 <span class="keyword">inline</span> <span class="keywordtype">bool</span> Base64::isPad(<span class="keyword">const</span> XMLByte& octet)
00272 {
00273 <span class="keywordflow">return</span> ( octet == base64Padding );
00274 }
00275
00276 <span class="keyword">inline</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a> Base64::set1stOctet(<span class="keyword">const</span> XMLByte& b1, <span class="keyword">const</span> XMLByte& b2)
00277 {
00278 <span class="keywordflow">return</span> (( b1 << 2 ) | ( b2 >> 4 ));
00279 }
00280
00281 <span class="keyword">inline</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a> Base64::set2ndOctet(<span class="keyword">const</span> XMLByte& b2, <span class="keyword">const</span> XMLByte& b3)
00282 {
00283 <span class="keywordflow">return</span> (( b2 << 4 ) | ( b3 >> 2 ));
00284 }
00285
00286 <span class="keyword">inline</span> <a class="code" href="XercesDefs_8hpp.html#a17">XMLByte</a> Base64::set3rdOctet(<span class="keyword">const</span> XMLByte& b3, <span class="keyword">const</span> XMLByte& b4)
00287 {
00288 <span class="keywordflow">return</span> (( b3 << 6 ) | b4 );
00289 }
00290
00291 <span class="keyword">inline</span> <span class="keywordtype">void</span> Base64::split1stOctet(<span class="keyword">const</span> XMLByte& ch, XMLByte& b1, XMLByte& b2) {
00292 b1 = ch >> 2;
00293 b2 = ( ch & 0x3 ) << 4;
00294 }
00295
00296 <span class="keyword">inline</span> <span class="keywordtype">void</span> Base64::split2ndOctet(<span class="keyword">const</span> XMLByte& ch, XMLByte& b2, XMLByte& b3) {
00297 b2 |= ch >> 4; <span class="comment">// combine with previous value</span>
00298 b3 = ( ch & 0xf ) << 2;
00299 }
00300
00301 <span class="keyword">inline</span> <span class="keywordtype">void</span> Base64::split3rdOctet(<span class="keyword">const</span> XMLByte& ch, XMLByte& b3, XMLByte& b4) {
00302 b3 |= ch >> 6; <span class="comment">// combine with previous value</span>
00303 b4 = ( ch & 0x3f );
00304 }
00305
00306 <a class="code" href="XercesDefs_8hpp.html#a4">XERCES_CPP_NAMESPACE_END</a>
00307
00308 <span class="preprocessor">#endif</span>
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