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  41 <h1>io_error.hpp</h1><a href="io__error_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
  42 <a name="l00002"></a>00002 <span class="comment">    Copyright 2005-2007 Adobe Systems Incorporated</span>
  43 <a name="l00003"></a>00003 <span class="comment">   </span>
  44 <a name="l00004"></a>00004 <span class="comment">    Use, modification and distribution are subject to the Boost Software License,</span>
  45 <a name="l00005"></a>00005 <span class="comment">    Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at</span>
  46 <a name="l00006"></a>00006 <span class="comment">    http://www.boost.org/LICENSE_1_0.txt).</span>
  47 <a name="l00007"></a>00007 <span class="comment"></span>
  48 <a name="l00008"></a>00008 <span class="comment">    See http://opensource.adobe.com/gil for most recent version including documentation.</span>
  49 <a name="l00009"></a>00009 <span class="comment">*/</span>
  50 <a name="l00010"></a>00010 <span class="comment">/*************************************************************************************************/</span>
  51 <a name="l00011"></a>00011
  52 <a name="l00012"></a>00012 <span class="preprocessor">#ifndef GIL_IO_ERROR_H</span>
  53 <a name="l00013"></a>00013 <span class="preprocessor"></span><span class="preprocessor">#define GIL_IO_ERROR_H</span>
  54 <a name="l00014"></a>00014 <span class="preprocessor"></span>
  55 <a name="l00020"></a>00020
  56 <a name="l00021"></a>00021 <span class="preprocessor">#include &lt;ios&gt;</span>
  57 <a name="l00022"></a>00022 <span class="preprocessor">#include "../../gil_config.hpp"</span>
  58 <a name="l00023"></a>00023 <span class="preprocessor">#include &lt;boost/shared_ptr.hpp&gt;</span>
  59 <a name="l00024"></a>00024
  60 <a name="l00025"></a>00025 <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {
  61 <a name="l00026"></a>00026
  62 <a name="l00027"></a>00027 <span class="keyword">inline</span> <span class="keywordtype">void</span> io_error(<span class="keyword">const</span> <span class="keywordtype">char</span>* descr) { <span class="keywordflow">throw</span> std::ios_base::failure(descr); }
  63 <a name="l00028"></a>00028 <span class="keyword">inline</span> <span class="keywordtype">void</span> io_error_if(<span class="keywordtype">bool</span> expr, <span class="keyword">const</span> <span class="keywordtype">char</span>* descr=<span class="stringliteral">""</span>) { <span class="keywordflow">if</span> (expr) io_error(descr); }
  64 <a name="l00029"></a>00029
  65 <a name="l00030"></a>00030 <span class="keyword">namespace </span>detail {
  66 <a name="l00031"></a>00031     <span class="keyword">class </span>file_mgr {
  67 <a name="l00032"></a>00032     <span class="keyword">protected</span>:
  68 <a name="l00033"></a>00033         shared_ptr&lt;FILE&gt; _fp;
  69 <a name="l00034"></a>00034
  70 <a name="l00035"></a>00035         <span class="keyword">struct </span>null_deleter { <span class="keywordtype">void</span> operator()(<span class="keywordtype">void</span> <span class="keyword">const</span>*)<span class="keyword"> const </span>{} };
  71 <a name="l00036"></a>00036         file_mgr(FILE* file) : _fp(file, null_deleter()) {}
  72 <a name="l00037"></a>00037
  73 <a name="l00038"></a>00038         file_mgr(<span class="keyword">const</span> <span class="keywordtype">char</span>* filename, <span class="keyword">const</span> <span class="keywordtype">char</span>* flags) {
  74 <a name="l00039"></a>00039             FILE* fp;
  75 <a name="l00040"></a>00040             io_error_if((fp=fopen(filename,flags))==NULL, <span class="stringliteral">"file_mgr: failed to open file"</span>);
  76 <a name="l00041"></a>00041             _fp=shared_ptr&lt;FILE&gt;(fp,fclose);
  77 <a name="l00042"></a>00042         }
  78 <a name="l00043"></a>00043
  79 <a name="l00044"></a>00044     <span class="keyword">public</span>:
  80 <a name="l00045"></a>00045         FILE* <span class="keyword">get</span>() { <span class="keywordflow">return</span> _fp.get(); }
  81 <a name="l00046"></a>00046     };
  82 <a name="l00047"></a>00047 }
  83 <a name="l00048"></a>00048
  84 <a name="l00049"></a>00049 } }  <span class="comment">// namespace boost::gil</span>
  85 <a name="l00050"></a>00050
  86 <a name="l00051"></a>00051 <span class="preprocessor">#endif</span>
  87 </pre></div></div>
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