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6 | <title>errinfo_at_line</title> | |
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15 | <a href="http://www.boost.org"><img style="border:0" src="../../../boost.png" alt="Boost" width="277" height="86"/></a> | |
16 | </div> | |
17 | <h1>Boost Exception</h1> | |
18 | </div> | |
19 | <!-- Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc. --> | |
20 | <!-- Distributed under the Boost Software License, Version 1.0. (See accompanying --> | |
21 | <!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> | |
22 | <div class="RenoIncludeDIV"><div class="RenoAutoDIV"><h3>errinfo_at_line</h3> | |
23 | </div> | |
24 | <div class="RenoIncludeDIV"><p><span class="RenoEscape">#<!--<wiki>`#</wiki>--></span>include <<span class="RenoLink"><a href="boost_exception_errinfo_at_line_hpp.html">boost/exception/errinfo_at_line.hpp</a></span>></p> | |
25 | <div class="RenoIncludeDIV"><pre>#include <<span class="RenoLink"><a href="boost_exception_error_info_hpp.html">boost/exception/error_info.hpp</a></span>> | |
26 | ||
27 | namespace | |
28 | boost | |
29 | { | |
30 | <span class="RenoIncludeSPAN"> <span class="RenoIncludeSPAN">typedef <span class="RenoLink"><a href="error_info.html">error_info</a></span><struct errinfo_at_line_,int> <span class="RenoLink">errinfo_at_line</span>;</span></span> | |
31 | }</pre> | |
32 | </div></div><p>This type is designed to be used as a standard <span class="RenoLink"><a href="error_info.html">error_info</a></span> instance for transporting a relevant text file line number, for example in parse error exceptions deriving from boost::<span class="RenoLink"><a href="exception.html">exception</a></span>.</p> | |
33 | <h3>Example:</h3> | |
34 | <div class="RenoIncludeDIV"><pre>#include <<span class="RenoLink"><a href="boost_exception_errinfo_api_function_hpp.html">boost/exception/errinfo_api_function.hpp</a></span>> | |
35 | #include <<span class="RenoLink"><a href="boost_exception_errinfo_at_line_hpp.html">boost/exception/errinfo_at_line.hpp</a></span>> | |
36 | #include <<span class="RenoLink"><a href="boost_exception_errinfo_errno_hpp.html">boost/exception/errinfo_errno.hpp</a></span>> | |
37 | #include <<span class="RenoLink"><a href="boost_exception_errinfo_file_handle_hpp.html">boost/exception/errinfo_file_handle.hpp</a></span>> | |
38 | #include <<span class="RenoLink"><a href="boost_exception_errinfo_file_name_hpp.html">boost/exception/errinfo_file_name.hpp</a></span>> | |
39 | #include <<span class="RenoLink"><a href="boost_exception_errinfo_file_open_mode_hpp.html">boost/exception/errinfo_file_open_mode.hpp</a></span>> | |
40 | #include <<span class="RenoLink"><a href="boost_exception_info_hpp.html">boost/exception/info.hpp</a></span>> | |
41 | #include <<span class="RenoLink"><a href="boost_throw_exception_hpp.html">boost/throw_exception.hpp</a></span>> | |
42 | #include <boost/shared_ptr.hpp> | |
43 | #include <boost/weak_ptr.hpp> | |
44 | #include <stdio.h> | |
45 | #include <errno.h> | |
46 | #include <exception> | |
47 | ||
48 | struct error : virtual std::exception, virtual boost::<span class="RenoLink"><a href="exception.html">exception</a></span> { }; | |
49 | struct file_error : virtual error { }; | |
50 | struct file_open_error: virtual file_error { }; | |
51 | struct file_read_error: virtual file_error { }; | |
52 | ||
53 | boost::shared_ptr<FILE> | |
54 | open_file( char const * file, char const * mode ) | |
55 | { | |
56 | if( FILE * f=fopen(file,mode) ) | |
57 | return boost::shared_ptr<FILE>(f,fclose); | |
58 | else | |
59 | <span class="RenoLink"><a href="BOOST_THROW_EXCEPTION.html">BOOST_THROW_EXCEPTION</a></span>( | |
60 | file_open_error() << | |
61 | boost::<span class="RenoLink"><a href="errinfo_api_function.html">errinfo_api_function</a></span>("fopen") << | |
62 | boost::<span class="RenoLink"><a href="errinfo_errno.html">errinfo_errno</a></span>(errno) << | |
63 | boost::<span class="RenoLink"><a href="errinfo_file_name.html">errinfo_file_name</a></span>(file) << | |
64 | boost::<span class="RenoLink"><a href="errinfo_file_open_mode.html">errinfo_file_open_mode</a></span>(mode) ); | |
65 | } | |
66 | ||
67 | size_t | |
68 | read_file( boost::shared_ptr<FILE> const & f, void * buf, size_t size ) | |
69 | { | |
70 | size_t nr=fread(buf,1,size,f.get()); | |
71 | if( ferror(f.get()) ) | |
72 | <span class="RenoLink"><a href="BOOST_THROW_EXCEPTION.html">BOOST_THROW_EXCEPTION</a></span>( | |
73 | file_read_error() << | |
74 | boost::<span class="RenoLink"><a href="errinfo_api_function.html">errinfo_api_function</a></span>("fread") << | |
75 | boost::<span class="RenoLink"><a href="errinfo_errno.html">errinfo_errno</a></span>(errno) << | |
76 | boost::<span class="RenoLink"><a href="errinfo_file_handle.html">errinfo_file_handle</a></span>(f) ); | |
77 | return nr; | |
78 | }</pre> | |
79 | </div></div><div class="RenoAutoDIV"><div class="RenoHR"><hr/></div> | |
80 | See also: <span class="RenoPageList"><a href="boost_exception_errinfo_at_line_hpp.html">boost/exception/errinfo_at_line.hpp</a></span> | |
81 | </div> | |
82 | <!-- Copyright (c) 2006-2009 Emil Dotchevski and Reverge Studios, Inc. --> | |
83 | <!-- Distributed under the Boost Software License, Version 1.0. (See accompanying --> | |
84 | <!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) --> | |
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89 | <small>Copyright (c) 2006-2009 by Emil Dotchevski and Reverge Studios, Inc.<br/> | |
90 | Distributed under the <a href="http://www.boost.org/LICENSE_1_0.txt">Boost Software License, Version 1.0</a>.</small> | |
91 | </p> | |
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