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cryptopp-doc-5.6.1-0.1.svn479.fc13.i686.rpm

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<h1>base64.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// base64.cpp - written and placed in the public domain by Wei Dai</span>
<a name="l00002"></a>00002 
<a name="l00003"></a>00003 <span class="preprocessor">#include &quot;pch.h&quot;</span>
<a name="l00004"></a>00004 <span class="preprocessor">#include &quot;base64.h&quot;</span>
<a name="l00005"></a>00005 
<a name="l00006"></a>00006 NAMESPACE_BEGIN(CryptoPP)
<a name="l00007"></a>00007 
<a name="l00008"></a>00008 static const byte s_vec[] =
<a name="l00009"></a>00009                 &quot;ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/&quot;;
<a name="l00010"></a>00010 static const byte s_padding = &apos;=&apos;;
<a name="l00011"></a>00011 
<a name="l00012"></a>00012 <span class="keywordtype">void</span> <a class="code" href="class_base64_encoder.html" title="Base64 Encoder Class.">Base64Encoder</a>::IsolatedInitialize(const <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> &amp;parameters)
<a name="l00013"></a>00013 {
<a name="l00014"></a>00014         <span class="keywordtype">bool</span> insertLineBreaks = parameters.GetValueWithDefault(Name::InsertLineBreaks(), <span class="keyword">true</span>);
<a name="l00015"></a>00015         <span class="keywordtype">int</span> maxLineLength = parameters.GetIntValueWithDefault(Name::MaxLineLength(), 72);
<a name="l00016"></a>00016 
<a name="l00017"></a>00017         <span class="keyword">const</span> <span class="keywordtype">char</span> *lineBreak = insertLineBreaks ? <span class="stringliteral">&quot;\n&quot;</span> : <span class="stringliteral">&quot;&quot;</span>;
<a name="l00018"></a>00018         
<a name="l00019"></a>00019         m_filter-&gt;Initialize(<a class="code" href="class_combined_name_value_pairs.html">CombinedNameValuePairs</a>(
<a name="l00020"></a>00020                 parameters,
<a name="l00021"></a>00021                 MakeParameters(Name::EncodingLookupArray(), &amp;s_vec[0], <span class="keyword">false</span>)
<a name="l00022"></a>00022                         (Name::PaddingByte(), s_padding)
<a name="l00023"></a>00023                         (Name::GroupSize(), insertLineBreaks ? maxLineLength : 0)
<a name="l00024"></a>00024                         (Name::Separator(), <a class="code" href="class_const_byte_array_parameter.html" title="used to pass byte array input as part of a NameValuePairs object">ConstByteArrayParameter</a>(lineBreak))
<a name="l00025"></a>00025                         (Name::Terminator(), <a class="code" href="class_const_byte_array_parameter.html" title="used to pass byte array input as part of a NameValuePairs object">ConstByteArrayParameter</a>(lineBreak))
<a name="l00026"></a>00026                         (Name::Log2Base(), 6, <span class="keyword">true</span>)));
<a name="l00027"></a>00027 }
<a name="l00028"></a>00028 
<a name="l00029"></a>00029 <span class="keyword">const</span> <span class="keywordtype">int</span> *Base64Decoder::GetDecodingLookupArray()
<a name="l00030"></a>00030 {
<a name="l00031"></a>00031         <span class="keyword">static</span> <span class="keywordtype">bool</span> s_initialized = <span class="keyword">false</span>;
<a name="l00032"></a>00032         <span class="keyword">static</span> <span class="keywordtype">int</span> s_array[256];
<a name="l00033"></a>00033 
<a name="l00034"></a>00034         <span class="keywordflow">if</span> (!s_initialized)
<a name="l00035"></a>00035         {
<a name="l00036"></a>00036                 InitializeDecodingLookupArray(s_array, s_vec, 64, <span class="keyword">false</span>);
<a name="l00037"></a>00037                 s_initialized = <span class="keyword">true</span>;
<a name="l00038"></a>00038         }
<a name="l00039"></a>00039         <span class="keywordflow">return</span> s_array;
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041 
<a name="l00042"></a>00042 NAMESPACE_END
</pre></div></div>
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