<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>Class error_with_option_name</title> <link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> <link rel="up" href="../../program_options/reference.html#header.boost.program_options.errors_hpp" title="Header <boost/program_options/errors.hpp>"> <link rel="prev" href="error_with_no_option_name.html" title="Class error_with_no_option_name"> <link rel="next" href="invalid_bool_value.html" title="Class invalid_bool_value"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table cellpadding="2" width="100%"><tr> <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td> <td align="center"><a href="../../../../index.html">Home</a></td> <td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td> <td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> <td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> <td align="center"><a href="../../../../more/index.htm">More</a></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="error_with_no_option_name.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../program_options/reference.html#header.boost.program_options.errors_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="invalid_bool_value.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> </div> <div class="refentry"> <a name="boost.program_options.error_with_option_name"></a><div class="titlepage"></div> <div class="refnamediv"> <h2><span class="refentrytitle">Class error_with_option_name</span></h2> <p>boost::program_options::error_with_option_name</p> </div> <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../program_options/reference.html#header.boost.program_options.errors_hpp" title="Header <boost/program_options/errors.hpp>">boost/program_options/errors.hpp</a>> </span> <span class="keyword">class</span> <a class="link" href="error_with_option_name.html" title="Class error_with_option_name">error_with_option_name</a> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">program_options</span><span class="special">::</span><span class="identifier">error</span> <span class="special">{</span> <span class="keyword">public</span><span class="special">:</span> <span class="comment">// <a class="link" href="error_with_option_name.html#boost.program_options.error_with_option_nameconstruct-copy-destruct">construct/copy/destruct</a></span> <a class="link" href="error_with_option_name.html#idm45507164169904-bb"><span class="identifier">error_with_option_name</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> <span class="special">=</span> <span class="string">""</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> <span class="special">=</span> <span class="string">""</span><span class="special">,</span> <span class="keyword">int</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span> <a class="link" href="error_with_option_name.html#idm45507154474304-bb"><span class="special">~</span><span class="identifier">error_with_option_name</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> <span class="comment">// <a class="link" href="error_with_option_name.html#idm45507158331744-bb">public member functions</a></span> <span class="keyword">void</span> <a class="link" href="error_with_option_name.html#idm45507158331216-bb"><span class="identifier">set_substitute</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> <span class="keyword">void</span> <a class="link" href="error_with_option_name.html#idm45507108217952-bb"><span class="identifier">set_substitute_default</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> <span class="keyword">void</span> <a class="link" href="error_with_option_name.html#idm45507093058992-bb"><span class="identifier">add_context</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">int</span><span class="special">)</span><span class="special">;</span> <span class="keyword">void</span> <a class="link" href="error_with_option_name.html#idm45507133647328-bb"><span class="identifier">set_prefix</span></a><span class="special">(</span><span class="keyword">int</span><span class="special">)</span><span class="special">;</span> <span class="keyword">virtual</span> <span class="keyword">void</span> <a class="link" href="error_with_option_name.html#idm45506984662624-bb"><span class="identifier">set_option_name</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <a class="link" href="error_with_option_name.html#idm45507041901568-bb"><span class="identifier">get_option_name</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="keyword">void</span> <a class="link" href="error_with_option_name.html#idm45507041900448-bb"><span class="identifier">set_original_token</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keyword">char</span> <span class="special">*</span> <a class="link" href="error_with_option_name.html#idm45506999528704-bb"><span class="identifier">what</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="comment">// <a class="link" href="error_with_option_name.html#idm45507157309872-bb">protected member functions</a></span> <span class="keyword">virtual</span> <span class="keyword">void</span> <a class="link" href="error_with_option_name.html#idm45507157309344-bb"><span class="identifier">substitute_placeholders</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="keyword">void</span> <a class="link" href="error_with_option_name.html#idm45507170719488-bb"><span class="identifier">replace_token</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <a class="link" href="error_with_option_name.html#idm45507154635984-bb"><span class="identifier">get_canonical_option_name</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <a class="link" href="error_with_option_name.html#idm45507159017808-bb"><span class="identifier">get_canonical_option_prefix</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="comment">// <a class="link" href="error_with_option_name.html#boost.program_options.error_with_option_namepublic-data-members">public data members</a></span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <a class="link" href="error_with_option_name.html#boost.program_options.error_with_option_name.m_error_template"><span class="identifier">m_error_template</span></a><span class="special">;</span> <span class="special">}</span><span class="special">;</span></pre></div> <div class="refsect1"> <a name="idm45555217497920"></a><h2>Description</h2> <p>Base class for most exceptions in the library.</p> <p>Substitutes the values for the parameter name placeholders in the template to create the human readable error message</p> <p>Placeholders are surrounded by % signs: example% Poor man's version of boost::format</p> <p>If a parameter name is absent, perform default substitutions instead so ugly placeholders are never left in-place.</p> <p>Options are displayed in "canonical" form This is the most unambiguous form of the <span class="emphasis"><em>parsed</em></span> option name and would correspond to option_description::format_name() i.e. what is shown by print_usage()</p> <p>The "canonical" form depends on whether the option is specified in short or long form, using dashes or slashes or without a prefix (from a configuration file) </p> <div class="refsect2"> <a name="idm45555217494736"></a><h3> <a name="boost.program_options.error_with_option_nameconstruct-copy-destruct"></a><code class="computeroutput">error_with_option_name</code> public construct/copy/destruct</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"><pre class="literallayout"><a name="idm45507164169904-bb"></a><span class="identifier">error_with_option_name</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> template_<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> option_name <span class="special">=</span> <span class="string">""</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> original_token <span class="special">=</span> <span class="string">""</span><span class="special">,</span> <span class="keyword">int</span> option_style <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"> <pre class="literallayout"><a name="idm45507154474304-bb"></a><span class="special">~</span><span class="identifier">error_with_option_name</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> <p>gcc says that throw specification on dtor is loosened without this line </p> </li> </ol></div> </div> <div class="refsect2"> <a name="idm45555217468656"></a><h3> <a name="idm45507158331744-bb"></a><code class="computeroutput">error_with_option_name</code> public member functions</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"> <pre class="literallayout"><span class="keyword">void</span> <a name="idm45507158331216-bb"></a><span class="identifier">set_substitute</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> parameter_name<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> value<span class="special">)</span><span class="special">;</span></pre> <p>Substitute parameter_name->value to create the error message from the error template </p> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">void</span> <a name="idm45507108217952-bb"></a><span class="identifier">set_substitute_default</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> parameter_name<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> from<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> to<span class="special">)</span><span class="special">;</span></pre> <p>If the parameter is missing, then make the from->to substitution instead </p> </li> <li class="listitem"> <pre class="literallayout"><span class="keyword">void</span> <a name="idm45507093058992-bb"></a><span class="identifier">add_context</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> option_name<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> original_token<span class="special">,</span> <span class="keyword">int</span> option_style<span class="special">)</span><span class="special">;</span></pre> <p>Add context to an exception </p> </li> <li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="idm45507133647328-bb"></a><span class="identifier">set_prefix</span><span class="special">(</span><span class="keyword">int</span> option_style<span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"> <pre class="literallayout"><span class="keyword">virtual</span> <span class="keyword">void</span> <a name="idm45506984662624-bb"></a><span class="identifier">set_option_name</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> option_name<span class="special">)</span><span class="special">;</span></pre> <p>Overridden in <code class="computeroutput"><a class="link" href="error_with_no_option_name.html" title="Class error_with_no_option_name">error_with_no_option_name</a></code> </p> </li> <li class="listitem"><pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <a name="idm45507041901568-bb"></a><span class="identifier">get_option_name</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="idm45507041900448-bb"></a><span class="identifier">set_original_token</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> original_token<span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"> <pre class="literallayout"><span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keyword">char</span> <span class="special">*</span> <a name="idm45506999528704-bb"></a><span class="identifier">what</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> <p>Creates the error_message on the fly Currently a thin wrapper for substitute_placeholders() </p> </li> </ol></div> </div> <div class="refsect2"> <a name="idm45555217390880"></a><h3> <a name="idm45507157309872-bb"></a><code class="computeroutput">error_with_option_name</code> protected member functions</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"> <pre class="literallayout"><span class="keyword">virtual</span> <span class="keyword">void</span> <a name="idm45507157309344-bb"></a><span class="identifier">substitute_placeholders</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> error_template<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> <p>Makes all substitutions using the template </p> </li> <li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="idm45507170719488-bb"></a><span class="identifier">replace_token</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> from<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> to<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> <li class="listitem"> <pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <a name="idm45507154635984-bb"></a><span class="identifier">get_canonical_option_name</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre> <p>Construct option name in accordance with the appropriate prefix style: i.e. long dash or short slash etc </p> </li> <li class="listitem"><pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <a name="idm45507159017808-bb"></a><span class="identifier">get_canonical_option_prefix</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> </ol></div> </div> <div class="refsect2"> <a name="idm45555217355200"></a><h3> <a name="boost.program_options.error_with_option_namepublic-data-members"></a><code class="computeroutput">error_with_option_name</code> public public data members</h3> <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"> <pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <a name="boost.program_options.error_with_option_name.m_error_template"></a><span class="identifier">m_error_template</span><span class="special">;</span></pre> <p>template with placeholders </p> </li></ol></div> </div> </div> </div> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <td align="left"></td> <td align="right"><div class="copyright-footer">Copyright © 2002-2004 Vladimir Prus<p>Distributed under the Boost Software License, Version 1.0. (See accompanying file <code class="filename">LICENSE_1_0.txt</code> or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) </p> </div></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="error_with_no_option_name.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../program_options/reference.html#header.boost.program_options.errors_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="invalid_bool_value.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html>