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<div class="title">/builddir/build/BUILD/nifticlib-2.0.0/znzlib/znzlib.h</div>  </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef _ZNZLIB_H_</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define _ZNZLIB_H_</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span>
<a name="l00004"></a>00004 <span class="comment">/*</span>
<a name="l00005"></a>00005 <span class="comment">znzlib.h  (zipped or non-zipped library)</span>
<a name="l00006"></a>00006 <span class="comment"></span>
<a name="l00007"></a>00007 <span class="comment">*****            This code is released to the public domain.            *****</span>
<a name="l00008"></a>00008 <span class="comment"></span>
<a name="l00009"></a>00009 <span class="comment">*****  Author: Mark Jenkinson, FMRIB Centre, University of Oxford       *****</span>
<a name="l00010"></a>00010 <span class="comment">*****  Date:   September 2004                                           *****</span>
<a name="l00011"></a>00011 <span class="comment"></span>
<a name="l00012"></a>00012 <span class="comment">*****  Neither the FMRIB Centre, the University of Oxford, nor any of   *****</span>
<a name="l00013"></a>00013 <span class="comment">*****  its employees imply any warranty of usefulness of this software  *****</span>
<a name="l00014"></a>00014 <span class="comment">*****  for any purpose, and do not assume any liability for damages,    *****</span>
<a name="l00015"></a>00015 <span class="comment">*****  incidental or otherwise, caused by any use of this document.     *****</span>
<a name="l00016"></a>00016 <span class="comment"></span>
<a name="l00017"></a>00017 <span class="comment">*/</span>
<a name="l00018"></a>00018 
<a name="l00019"></a>00019 <span class="comment">/*</span>
<a name="l00020"></a>00020 <span class="comment"></span>
<a name="l00021"></a>00021 <span class="comment">This library provides an interface to both compressed (gzip/zlib) and</span>
<a name="l00022"></a>00022 <span class="comment">uncompressed (normal) file IO.  The functions are written to have the</span>
<a name="l00023"></a>00023 <span class="comment">same interface as the standard file IO functions.  </span>
<a name="l00024"></a>00024 <span class="comment"></span>
<a name="l00025"></a>00025 <span class="comment">To use this library instead of normal file IO, the following changes</span>
<a name="l00026"></a>00026 <span class="comment">are required:</span>
<a name="l00027"></a>00027 <span class="comment"> - replace all instances of FILE* with znzFile</span>
<a name="l00028"></a>00028 <span class="comment"> - change the name of all function calls, replacing the initial character</span>
<a name="l00029"></a>00029 <span class="comment">   f with the znz  (e.g. fseek becomes znzseek)</span>
<a name="l00030"></a>00030 <span class="comment"> - add a third parameter to all calls to znzopen (previously fopen)</span>
<a name="l00031"></a>00031 <span class="comment">   that specifies whether to use compression (1) or not (0)</span>
<a name="l00032"></a>00032 <span class="comment"> - use znz_isnull rather than any (pointer == NULL) comparisons in the code</span>
<a name="l00033"></a>00033 <span class="comment"> </span>
<a name="l00034"></a>00034 <span class="comment">NB: seeks for writable files with compression are quite restricted</span>
<a name="l00035"></a>00035 <span class="comment"></span>
<a name="l00036"></a>00036 <span class="comment">*/</span>
<a name="l00037"></a>00037 
<a name="l00038"></a>00038 
<a name="l00039"></a>00039 <span class="comment">/*=================*/</span>
<a name="l00040"></a>00040 <span class="preprocessor">#ifdef  __cplusplus</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {
<a name="l00042"></a>00042 <span class="preprocessor">#endif</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span><span class="comment">/*=================*/</span>
<a name="l00044"></a>00044 
<a name="l00045"></a>00045 <span class="preprocessor">#include &lt;stdio.h&gt;</span>
<a name="l00046"></a>00046 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
<a name="l00047"></a>00047 <span class="preprocessor">#include &lt;string.h&gt;</span>
<a name="l00048"></a>00048 <span class="preprocessor">#include &lt;stdarg.h&gt;</span>
<a name="l00049"></a>00049 
<a name="l00050"></a>00050 <span class="comment">/* include optional check for HAVE_FDOPEN here, from deleted config.h:</span>
<a name="l00051"></a>00051 <span class="comment"></span>
<a name="l00052"></a>00052 <span class="comment">   uncomment the following line if fdopen() exists for your compiler and</span>
<a name="l00053"></a>00053 <span class="comment">   compiler options</span>
<a name="l00054"></a>00054 <span class="comment">*/</span>
<a name="l00055"></a>00055 <span class="comment">/* #define HAVE_FDOPEN */</span>
<a name="l00056"></a>00056 
<a name="l00057"></a>00057 
<a name="l00058"></a>00058 <span class="preprocessor">#ifdef HAVE_ZLIB</span>
<a name="l00059"></a>00059 <span class="preprocessor"></span><span class="preprocessor">#if defined(ITKZLIB)</span>
<a name="l00060"></a>00060 <span class="preprocessor"></span><span class="preprocessor">#include &quot;itk_zlib.h&quot;</span>
<a name="l00061"></a>00061 <span class="preprocessor">#else</span>
<a name="l00062"></a>00062 <span class="preprocessor"></span><span class="preprocessor">#include &quot;zlib.h&quot;</span>
<a name="l00063"></a>00063 <span class="preprocessor">#endif</span>
<a name="l00064"></a>00064 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00065"></a>00065 <span class="preprocessor"></span>
<a name="l00066"></a>00066 
<a name="l00067"></a><a class="code" href="structznzptr.html">00067</a> <span class="keyword">struct </span><a class="code" href="structznzptr.html">znzptr</a> {
<a name="l00068"></a>00068   <span class="keywordtype">int</span> withz;
<a name="l00069"></a>00069   FILE* nzfptr;
<a name="l00070"></a>00070 <span class="preprocessor">#ifdef HAVE_ZLIB</span>
<a name="l00071"></a>00071 <span class="preprocessor"></span>  gzFile zfptr;
<a name="l00072"></a>00072 <span class="preprocessor">#endif</span>
<a name="l00073"></a>00073 <span class="preprocessor"></span>} ;
<a name="l00074"></a>00074 
<a name="l00075"></a>00075 <span class="comment">/* the type for all file pointers */</span>
<a name="l00076"></a>00076 <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structznzptr.html">znzptr</a> * <a class="code" href="structznzptr.html">znzFile</a>;
<a name="l00077"></a>00077 
<a name="l00078"></a>00078 
<a name="l00079"></a>00079 <span class="comment">/* int znz_isnull(znzFile f); */</span>
<a name="l00080"></a>00080 <span class="comment">/* int znzclose(znzFile f); */</span>
<a name="l00081"></a>00081 <span class="preprocessor">#define znz_isnull(f) ((f) == NULL)</span>
<a name="l00082"></a>00082 <span class="preprocessor"></span><span class="preprocessor">#define znzclose(f)   Xznzclose(&amp;(f))</span>
<a name="l00083"></a>00083 <span class="preprocessor"></span>
<a name="l00084"></a>00084 <span class="comment">/* Note extra argument (use_compression) where </span>
<a name="l00085"></a>00085 <span class="comment">   use_compression==0 is no compression</span>
<a name="l00086"></a>00086 <span class="comment">   use_compression!=0 uses zlib (gzip) compression</span>
<a name="l00087"></a>00087 <span class="comment">*/</span>
<a name="l00088"></a>00088 
<a name="l00089"></a>00089 znzFile znzopen(<span class="keyword">const</span> <span class="keywordtype">char</span> *path, <span class="keyword">const</span> <span class="keywordtype">char</span> *mode, <span class="keywordtype">int</span> use_compression);
<a name="l00090"></a>00090 
<a name="l00091"></a>00091 znzFile znzdopen(<span class="keywordtype">int</span> fd, <span class="keyword">const</span> <span class="keywordtype">char</span> *mode, <span class="keywordtype">int</span> use_compression);
<a name="l00092"></a>00092 
<a name="l00093"></a>00093 <span class="keywordtype">int</span> Xznzclose(znzFile * file);
<a name="l00094"></a>00094 
<a name="l00095"></a>00095 <span class="keywordtype">size_t</span> znzread(<span class="keywordtype">void</span>* buf, <span class="keywordtype">size_t</span> size, <span class="keywordtype">size_t</span> nmemb, znzFile file);
<a name="l00096"></a>00096 
<a name="l00097"></a>00097 <span class="keywordtype">size_t</span> znzwrite(<span class="keyword">const</span> <span class="keywordtype">void</span>* buf, <span class="keywordtype">size_t</span> size, <span class="keywordtype">size_t</span> nmemb, znzFile file);
<a name="l00098"></a>00098 
<a name="l00099"></a>00099 <span class="keywordtype">long</span> znzseek(znzFile file, <span class="keywordtype">long</span> offset, <span class="keywordtype">int</span> whence);
<a name="l00100"></a>00100 
<a name="l00101"></a>00101 <span class="keywordtype">int</span> znzrewind(znzFile stream);
<a name="l00102"></a>00102 
<a name="l00103"></a>00103 <span class="keywordtype">long</span> znztell(znzFile file);
<a name="l00104"></a>00104 
<a name="l00105"></a>00105 <span class="keywordtype">int</span> znzputs(<span class="keyword">const</span> <span class="keywordtype">char</span> *str, znzFile file);
<a name="l00106"></a>00106 
<a name="l00107"></a>00107 <span class="keywordtype">char</span> * znzgets(<span class="keywordtype">char</span>* str, <span class="keywordtype">int</span> size, znzFile file);
<a name="l00108"></a>00108 
<a name="l00109"></a>00109 <span class="keywordtype">int</span> znzputc(<span class="keywordtype">int</span> c, znzFile file);
<a name="l00110"></a>00110 
<a name="l00111"></a>00111 <span class="keywordtype">int</span> znzgetc(znzFile file);
<a name="l00112"></a>00112 
<a name="l00113"></a>00113 <span class="preprocessor">#if !defined(WIN32)</span>
<a name="l00114"></a>00114 <span class="preprocessor"></span><span class="keywordtype">int</span> znzprintf(znzFile stream, <span class="keyword">const</span> <span class="keywordtype">char</span> *format, ...);
<a name="l00115"></a>00115 <span class="preprocessor">#endif</span>
<a name="l00116"></a>00116 <span class="preprocessor"></span>
<a name="l00117"></a>00117 <span class="comment">/*=================*/</span>
<a name="l00118"></a>00118 <span class="preprocessor">#ifdef  __cplusplus</span>
<a name="l00119"></a>00119 <span class="preprocessor"></span>}
<a name="l00120"></a>00120 <span class="preprocessor">#endif</span>
<a name="l00121"></a>00121 <span class="preprocessor"></span><span class="comment">/*=================*/</span>
<a name="l00122"></a>00122 
<a name="l00123"></a>00123 <span class="preprocessor">#endif</span>
</pre></div></div>
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