<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> <title>Crypto++: zlib.h Source File</title> <link href="doxygen.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.3.7 --> <div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="namespaces.html">Namespace List</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="classes.html">Alphabetical List</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="namespacemembers.html">Namespace Members</a> | <a class="qindex" href="functions.html">Class Members</a> | <a class="qindex" href="globals.html">File Members</a></div> <h1>zlib.h</h1><pre class="fragment"><div>00001 <span class="preprocessor">#ifndef CRYPTOPP_ZLIB_H</span> 00002 <span class="preprocessor"></span><span class="preprocessor">#define CRYPTOPP_ZLIB_H</span> 00003 <span class="preprocessor"></span> 00004 <span class="preprocessor">#include "adler32.h"</span> 00005 <span class="preprocessor">#include "zdeflate.h"</span> 00006 <span class="preprocessor">#include "zinflate.h"</span> 00007 00008 NAMESPACE_BEGIN(CryptoPP) 00009 00010 <span class="comment">/// ZLIB Compressor (RFC 1950)</span> <a name="l00011"></a><a class="code" href="class_zlib_compressor.html">00011</a> <span class="comment"></span>class <a class="code" href="class_zlib_compressor.html">ZlibCompressor</a> : public <a class="code" href="class_deflator.html">Deflator</a> 00012 { 00013 <span class="keyword">public</span>: 00014 <a class="code" href="class_zlib_compressor.html">ZlibCompressor</a>(<a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> deflateLevel=DEFAULT_DEFLATE_LEVEL, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> log2WindowSize=DEFAULT_LOG2_WINDOW_SIZE, <span class="keywordtype">bool</span> detectUncompressible=<span class="keyword">true</span>) 00015 : Deflator(attachment, deflateLevel, log2WindowSize, detectUncompressible) {} 00016 <a class="code" href="class_zlib_compressor.html">ZlibCompressor</a>(<span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html">NameValuePairs</a> &parameters, <a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment=NULL) 00017 : Deflator(parameters, attachment) {} 00018 00019 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> GetCompressionLevel() <span class="keyword">const</span>; 00020 00021 <span class="keyword">protected</span>: 00022 <span class="keywordtype">void</span> WritePrestreamHeader(); 00023 <span class="keywordtype">void</span> ProcessUncompressedData(<span class="keyword">const</span> byte *string, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> length); 00024 <span class="keywordtype">void</span> WritePoststreamTail(); 00025 00026 <a class="code" href="class_adler32.html">Adler32</a> m_adler32; 00027 }; 00028 <span class="comment"></span> 00029 <span class="comment">/// ZLIB Decompressor (RFC 1950)</span> <a name="l00030"></a><a class="code" href="class_zlib_decompressor.html">00030</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="class_zlib_decompressor.html">ZlibDecompressor</a> : <span class="keyword">public</span> <a class="code" href="class_inflator.html">Inflator</a> 00031 { 00032 <span class="keyword">public</span>: 00033 <span class="keyword">typedef</span> Inflator::Err Err; 00034 <span class="keyword">class </span>HeaderErr : <span class="keyword">public</span> Err {<span class="keyword">public</span>: HeaderErr() : Err(INVALID_DATA_FORMAT, <span class="stringliteral">"ZlibDecompressor: header decoding error"</span>) {}}; 00035 <span class="keyword">class </span>Adler32Err : <span class="keyword">public</span> Err {<span class="keyword">public</span>: Adler32Err() : Err(DATA_INTEGRITY_CHECK_FAILED, <span class="stringliteral">"ZlibDecompressor: ADLER32 check error"</span>) {}}; 00036 <span class="keyword">class </span>UnsupportedAlgorithm : <span class="keyword">public</span> Err {<span class="keyword">public</span>: UnsupportedAlgorithm() : Err(INVALID_DATA_FORMAT, <span class="stringliteral">"ZlibDecompressor: unsupported algorithm"</span>) {}}; 00037 <span class="keyword">class </span>UnsupportedPresetDictionary : <span class="keyword">public</span> Err {<span class="keyword">public</span>: UnsupportedPresetDictionary() : Err(INVALID_DATA_FORMAT, <span class="stringliteral">"ZlibDecompressor: unsupported preset dictionary"</span>) {}}; 00038 <span class="comment"></span> 00039 <span class="comment"> /*! \param repeat decompress multiple compressed streams in series</span> 00040 <span class="comment"> \param autoSignalPropagation 0 to turn off MessageEnd signal</span> 00041 <span class="comment"> */</span> 00042 <a class="code" href="class_zlib_decompressor.html">ZlibDecompressor</a>(<a class="code" href="class_buffered_transformation.html">BufferedTransformation</a> *attachment = NULL, <span class="keywordtype">bool</span> repeat = <span class="keyword">false</span>, <span class="keywordtype">int</span> autoSignalPropagation = -1); 00043 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> GetLog2WindowSize()<span class="keyword"> const </span>{<span class="keywordflow">return</span> m_log2WindowSize;} 00044 00045 <span class="keyword">private</span>: 00046 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> MaxPrestreamHeaderSize()<span class="keyword"> const </span>{<span class="keywordflow">return</span> 2;} 00047 <span class="keywordtype">void</span> ProcessPrestreamHeader(); 00048 <span class="keywordtype">void</span> ProcessDecompressedData(<span class="keyword">const</span> byte *string, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> length); 00049 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> MaxPoststreamTailSize()<span class="keyword"> const </span>{<span class="keywordflow">return</span> 4;} 00050 <span class="keywordtype">void</span> ProcessPoststreamTail(); 00051 00052 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> m_log2WindowSize; 00053 <a class="code" href="class_adler32.html">Adler32</a> m_adler32; 00054 }; 00055 00056 NAMESPACE_END 00057 00058 <span class="preprocessor">#endif</span> </div></pre><hr size="1"><address style="align: right;"><small>Generated on Sun Nov 7 08:24:00 2004 for Crypto++ by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border=0 ></a> 1.3.7 </small></address> </body> </html>