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<?xml version="1.0" encoding="UTF-8"?> <html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Templatized C++ Command Line Parser Manual</title><link rel="stylesheet" type="text/css" href="style.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="book"><div class="titlepage"><div><div><h1 class="title"><a name="idm1"></a>Templatized C++ Command Line Parser Manual</h1></div><div><div class="author"><h3 class="author"><span class="firstname">Michael</span> <span class="othername">E</span> <span class="surname">Smoot</span></h3></div></div><div><p class="copyright">Copyright © 2003,2004,2005,2006,2009,2011,2012 Michael E. Smoot</p></div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="chapter"><a href="#BASIC_USAGE">1. Basic Usage</a></span></dt><dd><dl><dt><span class="sect1"><a href="#OVERVIEW">Overview</a></span></dt><dt><span class="sect1"><a href="#EXAMPLE">Example</a></span></dt><dd><dl><dt><span class="sect2"><a href="#LIBRARY_PROPERTIES">Library Properties</a></span></dt><dt><span class="sect2"><a href="#ARG_PROPERTIES">Common Argument Properties</a></span></dt></dl></dd><dt><span class="sect1"><a href="#COMPILING">Compiling</a></span></dt></dl></dd><dt><span class="chapter"><a href="#FUNDAMENTAL_CLASSES">2. Fundamental Classes</a></span></dt><dd><dl><dt><span class="sect1"><a href="#COMMAND_LINE"><code class="classname">CmdLine</code></a></span></dt><dt><span class="sect1"><a href="#SWITCH_ARG"><code class="classname">SwitchArg</code></a></span></dt><dt><span class="sect1"><a href="#VALUE_ARG"><code class="classname">ValueArg</code></a></span></dt><dt><span class="sect1"><a href="#MULTI_ARG"><code class="classname">MultiArg</code></a></span></dt><dt><span class="sect1"><a href="#MULTI_SWITCH_ARG"><code class="classname">MultiSwitchArg</code></a></span></dt><dt><span class="sect1"><a href="#UNLABELED_VALUE_ARG"><code class="classname">UnlabeledValueArg</code></a></span></dt><dt><span class="sect1"><a href="#UNLABELED_MULTI_ARG"><code class="classname">UnlabeledMultiArg</code></a></span></dt></dl></dd><dt><span class="chapter"><a href="#COMPLICATIONS">3. Complications</a></span></dt><dd><dl><dt><span class="sect1"><a href="#COMBINE_SWITCHES">I want to combine multiple switches into one argument...</a></span></dt><dt><span class="sect1"><a href="#XOR">I want one argument or the other, but not both...</a></span></dt><dt><span class="sect1"><a href="#NO_FLAG">I have more arguments than single flags make sense for...</a></span></dt><dt><span class="sect1"><a href="#CONSTRAINT">I want to constrain the values allowed for a particular
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> argument...</a></span></dt><dt><span class="sect1"><a href="#ARG_ADD_CMDLINE">I want the Args to add themselves to the CmdLine...</a></span></dt><dt><span class="sect1"><a href="#CHANGE_OUTPUT">I want different output than what is provided...</a></span></dt><dt><span class="sect1"><a href="#NO_HELP_VERSION">I don't want the --help and --version switches to be created automatically...</a></span></dt><dt><span class="sect1"><a href="#IGNORE_ARGS">I want to ignore certain arguments...</a></span></dt><dt><span class="sect1"><a href="#IGNORE_UNMATCHED">I want to ignore unmatched arguments...</a></span></dt><dt><span class="sect1"><a href="#READING_HEX_INTEGERS">I want to read hex integers as arguments...</a></span></dt><dt><span class="sect1"><a href="#USING_ARGTRAITS">I want to use different types...</a></span></dt><dt><span class="sect1"><a href="#CHANGING_STARTSTRINGS">I want to use Windows-style flags like "/x" and "/y"...</a></span></dt></dl></dd><dt><span class="chapter"><a href="#NOTES">4. Notes</a></span></dt><dd><dl><dt><span class="sect1"><a href="#DESCRIPTION_EXCEPTIONS">Type Descriptions</a></span></dt><dt><span class="sect1"><a href="#VISITORS">Visitors</a></span></dt><dt><span class="sect1"><a href="#MORE_INFO">More Information</a></span></dt></dl></dd></dl></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="BASIC_USAGE"></a>Chapter 1. Basic Usage</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="sect1"><a href="#OVERVIEW">Overview</a></span></dt><dt><span class="sect1"><a href="#EXAMPLE">Example</a></span></dt><dd><dl><dt><span class="sect2"><a href="#LIBRARY_PROPERTIES">Library Properties</a></span></dt><dt><span class="sect2"><a href="#ARG_PROPERTIES">Common Argument Properties</a></span></dt></dl></dd><dt><span class="sect1"><a href="#COMPILING">Compiling</a></span></dt></dl></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="OVERVIEW"></a>Overview</h2></div></div></div><p>
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Templatized C++ Command Line Parser Manual</title><link rel="stylesheet" href="style.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.71.1" /></head><body><div class="book" lang="en" xml:lang="en"><div class="titlepage"><div><div><h1 class="title"><a id="id417480"></a>Templatized C++ Command Line Parser Manual</h1></div><div><div class="author"><h3 class="author"><span class="firstname">Michael</span> <span class="othername">E</span> <span class="surname">Smoot</span></h3></div></div><div><p class="copyright">Copyright © 2003,2004,2005,2006,2009,2011,2012 Michael E. Smoot</p></div></div><hr /></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="chapter"><a href="#BASIC_USAGE">1. Basic Usage</a></span></dt><dd><dl><dt><span class="sect1"><a href="#OVERVIEW">Overview</a></span></dt><dt><span class="sect1"><a href="#EXAMPLE">Example</a></span></dt><dd><dl><dt><span class="sect2"><a href="#LIBRARY_PROPERTIES">Library Properties</a></span></dt><dt><span class="sect2"><a href="#ARG_PROPERTIES">Common Argument Properties</a></span></dt></dl></dd><dt><span class="sect1"><a href="#COMPILING">Compiling</a></span></dt></dl></dd><dt><span class="chapter"><a href="#FUNDAMENTAL_CLASSES">2. Fundamental Classes</a></span></dt><dd><dl><dt><span class="sect1"><a href="#COMMAND_LINE"><code class="classname">CmdLine</code></a></span></dt><dt><span class="sect1"><a href="#SWITCH_ARG"><code class="classname">SwitchArg</code></a></span></dt><dt><span class="sect1"><a href="#VALUE_ARG"><code class="classname">ValueArg</code></a></span></dt><dt><span class="sect1"><a href="#MULTI_ARG"><code class="classname">MultiArg</code></a></span></dt><dt><span class="sect1"><a href="#MULTI_SWITCH_ARG"><code class="classname">MultiSwitchArg</code></a></span></dt><dt><span class="sect1"><a href="#UNLABELED_VALUE_ARG"><code class="classname">UnlabeledValueArg</code></a></span></dt><dt><span class="sect1"><a href="#UNLABELED_MULTI_ARG"><code class="classname">UnlabeledMultiArg</code></a></span></dt></dl></dd><dt><span class="chapter"><a href="#COMPLICATIONS">3. Complications</a></span></dt><dd><dl><dt><span class="sect1"><a href="#COMBINE_SWITCHES">I want to combine multiple switches into one argument...</a></span></dt><dt><span class="sect1"><a href="#XOR">I want one argument or the other, but not both...</a></span></dt><dt><span class="sect1"><a href="#NO_FLAG">I have more arguments than single flags make sense for...</a></span></dt><dt><span class="sect1"><a href="#CONSTRAINT">I want to constrain the values allowed for a particular
argument...</a></span></dt><dt><span class="sect1"><a href="#ARG_ADD_CMDLINE">I want the Args to add themselves to the CmdLine...</a></span></dt><dt><span class="sect1"><a href="#CHANGE_OUTPUT">I want different output than what is provided...</a></span></dt><dt><span class="sect1"><a href="#NO_HELP_VERSION">I don't want the --help and --version switches to be created automatically...</a></span></dt><dt><span class="sect1"><a href="#IGNORE_ARGS">I want to ignore certain arguments...</a></span></dt><dt><span class="sect1"><a href="#IGNORE_UNMATCHED">I want to ignore unmatched arguments...</a></span></dt><dt><span class="sect1"><a href="#READING_HEX_INTEGERS">I want to read hex integers as arguments...</a></span></dt><dt><span class="sect1"><a href="#USING_ARGTRAITS">I want to use different types...</a></span></dt><dt><span class="sect1"><a href="#CHANGING_STARTSTRINGS">I want to use Windows-style flags like "/x" and "/y"...</a></span></dt></dl></dd><dt><span class="chapter"><a href="#NOTES">4. Notes</a></span></dt><dd><dl><dt><span class="sect1"><a href="#DESCRIPTION_EXCEPTIONS">Type Descriptions</a></span></dt><dt><span class="sect1"><a href="#VISITORS">Visitors</a></span></dt><dt><span class="sect1"><a href="#MORE_INFO">More Information</a></span></dt></dl></dd></dl></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="BASIC_USAGE"></a>Chapter 1. Basic Usage</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="#OVERVIEW">Overview</a></span></dt><dt><span class="sect1"><a href="#EXAMPLE">Example</a></span></dt><dd><dl><dt><span class="sect2"><a href="#LIBRARY_PROPERTIES">Library Properties</a></span></dt><dt><span class="sect2"><a href="#ARG_PROPERTIES">Common Argument Properties</a></span></dt></dl></dd><dt><span class="sect1"><a href="#COMPILING">Compiling</a></span></dt></dl></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="OVERVIEW"></a>Overview</h2></div></div></div><p>
<span class="emphasis"><em>TCLAP</em></span> has a few key classes to be aware of. <span class="emphasis"><em>TCLAP</em></span> has a few key classes to be aware of.
The first is the The first is the
<code class="classname">CmdLine</code> (command line) class. This class parses <code class="classname">CmdLine</code> (command line) class. This class parses
@ -14,15 +12,15 @@ argument classes are: <code class="classname">ValueArg</code>,
<code class="classname">MultiArg</code> and <code class="classname">MultiArg</code> and
<code class="classname">UnlabeledMultiArg</code>. <code class="classname">UnlabeledMultiArg</code>.
These classes are templatized, which means they can be defined to parse These classes are templatized, which means they can be defined to parse
a value of any <a href="#USING_ARGTRAITS" title="I want to use different types..."> type</a>. Once you add the a value of any <a class="link" href="#USING_ARGTRAITS" title="I want to use different types..."> type</a>. Once you add the
arguments to the <code class="classname">CmdLine</code> object, it parses the arguments to the <code class="classname">CmdLine</code> object, it parses the
command line command line
and assigns the data it finds to the specific argument objects it and assigns the data it finds to the specific argument objects it
contains. Your program accesses the values parsed by contains. Your program accesses the values parsed by
calls to the <code class="methodname">getValue()</code> methods of the calls to the <code class="methodname">getValue()</code> methods of the
argument objects. argument objects.
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="EXAMPLE"></a>Example</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="EXAMPLE"></a>Example</h2></div></div></div><p>
Here is a simple <a href="test1.cpp" target="_top"> example</a> ... Here is a simple <a class="ulink" href="test1.cpp" target="_top"> example</a> ...
</p><pre class="programlisting"> </p><pre class="programlisting">
#include &lt;string&gt; #include &lt;string&gt;
@ -137,11 +135,11 @@ Where:
Command description message Command description message
</pre><p> </pre><p>
</p><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="LIBRARY_PROPERTIES"></a>Library Properties</h3></div></div></div><p> </p><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="LIBRARY_PROPERTIES"></a>Library Properties</h3></div></div></div><p>
This example shows a number of different properties of the This example shows a number of different properties of the
library... library...
</p><div class="itemizedlist"><ul type="disc"><li>Arguments can appear in any order (...mostly, </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">Arguments can appear in any order (...mostly,
<a href="#COMPLICATIONS" title="Chapter 3. Complications"> more</a> on this later).</li><li>The <em class="parameter"><code>help</code></em>, <em class="parameter"><code>version</code></em> <a class="link" href="#COMPLICATIONS" title="Chapter 3. Complications"> more</a> on this later).</li><li class="listitem">The <em class="parameter"><code>help</code></em>, <em class="parameter"><code>version</code></em>
and <em class="parameter"><code>--</code></em><code class="classname">SwitchArg</code>s and <em class="parameter"><code>--</code></em><code class="classname">SwitchArg</code>s
are specified automatically. Using either the <em class="parameter"><code>-h</code></em> or are specified automatically. Using either the <em class="parameter"><code>-h</code></em> or
<em class="parameter"><code>--help</code></em> flag will cause the USAGE message to be displayed, <em class="parameter"><code>--help</code></em> flag will cause the USAGE message to be displayed,
@ -150,31 +148,31 @@ any version information to
be displayed, and <em class="parameter"><code>--</code></em> or be displayed, and <em class="parameter"><code>--</code></em> or
<em class="parameter"><code>--ignore_rest</code></em> will cause the <em class="parameter"><code>--ignore_rest</code></em> will cause the
remaining labeled arguments to be ignored. These switches are remaining labeled arguments to be ignored. These switches are
included by default on every command line. You can <a href="#">disable this functionality</a> if desired (although we don't recommend it). included by default on every command line. You can disable this functionality if desired (although we don't recommend it).
How we generate the behavior behind these flags is described How we generate the behavior behind these flags is described
<a href="#VISITORS" title="Visitors"> later</a>. <a class="link" href="#VISITORS" title="Visitors"> later</a>.
</li><li>If there is an error parsing the command line (e.g. a required </li><li class="listitem">If there is an error parsing the command line (e.g. a required
argument isn't provided), the program exits and displays a brief argument isn't provided), the program exits and displays a brief
USAGE and an error message.</li><li>The program name is assumed to always be argv[0], so it isn't USAGE and an error message.</li><li class="listitem">The program name is assumed to always be argv[0], so it isn't
specified directly.</li><li>A value delimiter character can be specified. This means that if you specified directly.</li><li class="listitem">A value delimiter character can be specified. This means that if you
prefer arguments of the style <em class="parameter"><code>-s=asdf</code></em> instead of prefer arguments of the style <em class="parameter"><code>-s=asdf</code></em> instead of
<em class="parameter"><code>-s asdf</code></em>, you can do so.</li><li><span class="emphasis"><em>Always wrap everything in a try block that catches <em class="parameter"><code>-s asdf</code></em>, you can do so.</li><li class="listitem"><span class="emphasis"><em>Always wrap everything in a try block that catches
ArgExceptions!</em></span> Any problems found in constructing the ArgExceptions!</em></span> Any problems found in constructing the
<code class="classname">CmdLine</code>, constructing the <code class="classname">Arg</code>s, <code class="classname">CmdLine</code>, constructing the <code class="classname">Arg</code>s,
or parsing the command line will throw an or parsing the command line will throw an
<code class="classname">ArgException</code>.</li></ul></div><p> <code class="classname">ArgException</code>.</li></ul></div><p>
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="ARG_PROPERTIES"></a>Common Argument Properties</h3></div></div></div><p> </p></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ARG_PROPERTIES"></a>Common Argument Properties</h3></div></div></div><p>
Arguments, whatever their type, have a few common properties. Arguments, whatever their type, have a few common properties.
These properties are set in the constructors of the arguments. These properties are set in the constructors of the arguments.
</p><div class="itemizedlist"><ul type="disc"><li>First is the flag or the character preceded by a dash(-) that </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">First is the flag or the character preceded by a dash(-) that
signals the beginning of the argument on the command line.</li><li>Arguments also have names, which can also be used signals the beginning of the argument on the command line.</li><li class="listitem">Arguments also have names, which can also be used
as an alternative flag on the command line, this time preceded by two dashes as an alternative flag on the command line, this time preceded by two dashes
(--) [like the familiar <code class="function">getopt_long()</code>].</li><li>Next is the description of the argument. This is a short (--) [like the familiar <code class="function">getopt_long()</code>].</li><li class="listitem">Next is the description of the argument. This is a short
description of the argument displayed in the help/usage message description of the argument displayed in the help/usage message
when needed.</li><li>The following parameters in the constructors vary depending on when needed.</li><li class="listitem">The following parameters in the constructors vary depending on
the type of argument. Some possible values include: the type of argument. Some possible values include:
<div class="itemizedlist"><ul type="circle"><li>A boolean value indicating whether the Arg is required or not. </li><li>A default value.</li><li>A <a href="#DESCRIPTION_EXCEPTIONS" title="Type Descriptions">description</a> of the type of value expected.</li><li>A <a href="#CONSTRAINT" title="I want to constrain the values allowed for a particular argument...">constraint</a> on the value expected.</li><li>The CmdLine instance that the Arg should be added to.</li><li>A <a href="#VISITORS" title="Visitors">Visitor</a>.</li></ul></div></li><li>See the <a href="html/index.html" target="_top">API Documentation</a> for more detail.</li></ul></div><p> <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; "><li class="listitem">A boolean value indicating whether the Arg is required or not. </li><li class="listitem">A default value.</li><li class="listitem">A <a class="link" href="#DESCRIPTION_EXCEPTIONS" title="Type Descriptions">description</a> of the type of value expected.</li><li class="listitem">A <a class="link" href="#CONSTRAINT" title="I want to constrain the values allowed for a particular argument...">constraint</a> on the value expected.</li><li class="listitem">The CmdLine instance that the Arg should be added to.</li><li class="listitem">A <a class="link" href="#VISITORS" title="Visitors">Visitor</a>.</li></ul></div></li><li class="listitem">See the <a class="ulink" href="html/index.html" target="_top">API Documentation</a> for more detail.</li></ul></div><p>
</p></div></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="COMPILING"></a>Compiling</h2></div></div></div><p> </p></div></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="COMPILING"></a>Compiling</h2></div></div></div><p>
<span class="emphasis"><em>TCLAP</em></span> is implemented entirely in header files <span class="emphasis"><em>TCLAP</em></span> is implemented entirely in header files
which means you only need to include CmdLine.h to use the library. which means you only need to include CmdLine.h to use the library.
</p><pre class="programlisting"> </p><pre class="programlisting">
@ -204,7 +202,7 @@ to work on Windows, Sun and Alpha platforms. We've made every
effort to keep the library compliant with the ANSI C++ standard so effort to keep the library compliant with the ANSI C++ standard so
if your compiler meets the standard, then this library should work if your compiler meets the standard, then this library should work
for you. Please let us know if this is not the case! for you. Please let us know if this is not the case!
</p><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="WINDOWS_NOTE"></a>Windows Note</h3></div></div></div><p> </p><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="WINDOWS_NOTE"></a>Windows Note</h3></div></div></div><p>
As we understand things, Visual C++ does not have the file As we understand things, Visual C++ does not have the file
<code class="filename">config.h</code> which is used to make platform <code class="filename">config.h</code> which is used to make platform
specific definitions. In this situation, we assume that you specific definitions. In this situation, we assume that you
@ -217,7 +215,7 @@ then simply tell your compiler to define the variable
<span class="emphasis"><em>should</em></span> work. We think. Alternatively, just edit <span class="emphasis"><em>should</em></span> work. We think. Alternatively, just edit
the files <code class="filename">ValueArg.h</code> and <code class="filename">MultiArg.h</code>. the files <code class="filename">ValueArg.h</code> and <code class="filename">MultiArg.h</code>.
</p></div><p> </p></div><p>
</p><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="RANDOM_NOTE"></a>Random Note</h3></div></div></div><p> </p><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="RANDOM_NOTE"></a>Random Note</h3></div></div></div><p>
If your compiler doesn't support the <code class="methodname">using</code> syntax used If your compiler doesn't support the <code class="methodname">using</code> syntax used
in <code class="classname">UnlabeledValueArg</code> and in <code class="classname">UnlabeledValueArg</code> and
<code class="classname">UnlabeledMultiArg</code> to support two stage name lookup, <code class="classname">UnlabeledMultiArg</code> to support two stage name lookup,
@ -228,26 +226,26 @@ the <code class="methodname">this</code> pointer syntax: e.g.
of just <code class="methodname">_ignorable</code> (do this for each variable of just <code class="methodname">_ignorable</code> (do this for each variable
or method referenced by <code class="methodname">using</code>). or method referenced by <code class="methodname">using</code>).
</p></div><p> </p></div><p>
</p></div></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="FUNDAMENTAL_CLASSES"></a>Chapter 2. Fundamental Classes</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="#COMMAND_LINE"><code class="classname">CmdLine</code></a></span></dt><dt><span class="sect1"><a href="#SWITCH_ARG"><code class="classname">SwitchArg</code></a></span></dt><dt><span class="sect1"><a href="#VALUE_ARG"><code class="classname">ValueArg</code></a></span></dt><dt><span class="sect1"><a href="#MULTI_ARG"><code class="classname">MultiArg</code></a></span></dt><dt><span class="sect1"><a href="#MULTI_SWITCH_ARG"><code class="classname">MultiSwitchArg</code></a></span></dt><dt><span class="sect1"><a href="#UNLABELED_VALUE_ARG"><code class="classname">UnlabeledValueArg</code></a></span></dt><dt><span class="sect1"><a href="#UNLABELED_MULTI_ARG"><code class="classname">UnlabeledMultiArg</code></a></span></dt></dl></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="COMMAND_LINE"></a><code class="classname">CmdLine</code></h2></div></div></div><p> </p></div></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="FUNDAMENTAL_CLASSES"></a>Chapter 2. Fundamental Classes</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="sect1"><a href="#COMMAND_LINE"><code class="classname">CmdLine</code></a></span></dt><dt><span class="sect1"><a href="#SWITCH_ARG"><code class="classname">SwitchArg</code></a></span></dt><dt><span class="sect1"><a href="#VALUE_ARG"><code class="classname">ValueArg</code></a></span></dt><dt><span class="sect1"><a href="#MULTI_ARG"><code class="classname">MultiArg</code></a></span></dt><dt><span class="sect1"><a href="#MULTI_SWITCH_ARG"><code class="classname">MultiSwitchArg</code></a></span></dt><dt><span class="sect1"><a href="#UNLABELED_VALUE_ARG"><code class="classname">UnlabeledValueArg</code></a></span></dt><dt><span class="sect1"><a href="#UNLABELED_MULTI_ARG"><code class="classname">UnlabeledMultiArg</code></a></span></dt></dl></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="COMMAND_LINE"></a><code class="classname">CmdLine</code></h2></div></div></div><p>
The <code class="classname">CmdLine</code> class contains the arguments that define The <code class="classname">CmdLine</code> class contains the arguments that define
the command line and manages the parsing of the command line. The the command line and manages the parsing of the command line. The
<code class="classname">CmdLine</code> doesn't parse the command line itself it only <code class="classname">CmdLine</code> doesn't parse the command line itself it only
manages the parsing. The actual parsing of individual arguments occurs within manages the parsing. The actual parsing of individual arguments occurs within
the arguments themselves. The <code class="classname">CmdLine</code> keeps track of the arguments themselves. The <code class="classname">CmdLine</code> keeps track of
of the required arguments, <a href="#XOR" title="I want one argument or the other, but not both...">relationships</a> of the required arguments, <a class="link" href="#XOR" title="I want one argument or the other, but not both...">relationships</a>
between arguments, and <a href="#CHANGE_OUTPUT" title="I want different output than what is provided...">output</a> generation. between arguments, and <a class="link" href="#CHANGE_OUTPUT" title="I want different output than what is provided...">output</a> generation.
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="SWITCH_ARG"></a><code class="classname">SwitchArg</code></h2></div></div></div><p><code class="classname">SwitchArg</code>s are what the name implies: </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="SWITCH_ARG"></a><code class="classname">SwitchArg</code></h2></div></div></div><p><code class="classname">SwitchArg</code>s are what the name implies:
simple, on/off, boolean switches. Use <code class="classname">SwitchArg</code>s simple, on/off, boolean switches. Use <code class="classname">SwitchArg</code>s
anytime you want to turn anytime you want to turn
some sort of system property on or off. <code class="classname">SwitchArg</code>s some sort of system property on or off. <code class="classname">SwitchArg</code>s
don't parse a value. They return <code class="constant">TRUE</code> or don't parse a value. They return <code class="constant">TRUE</code> or
<code class="constant">FALSE</code>, depending on whether the switch has been found <code class="constant">FALSE</code>, depending on whether the switch has been found
on the command line and what the default value was defined as.</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="VALUE_ARG"></a><code class="classname">ValueArg</code></h2></div></div></div><p><code class="classname">ValueArg</code>s are arguments that read a on the command line and what the default value was defined as.</p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="VALUE_ARG"></a><code class="classname">ValueArg</code></h2></div></div></div><p><code class="classname">ValueArg</code>s are arguments that read a
value of some type value of some type
from the command line. Any time you need a file name, a number, from the command line. Any time you need a file name, a number,
etc. use a <code class="classname">ValueArg</code> or one of its variants. etc. use a <code class="classname">ValueArg</code> or one of its variants.
All <code class="classname">ValueArg</code>s are All <code class="classname">ValueArg</code>s are
<a href="#USING_ARGTRAITS" title="I want to use different types..."> templatized</a> and will attempt to parse <a class="link" href="#USING_ARGTRAITS" title="I want to use different types..."> templatized</a> and will attempt to parse
the string its flag matches on the command line as the type it is the string its flag matches on the command line as the type it is
specified as. <code class="classname">ValueArg&lt;int&gt;</code> specified as. <code class="classname">ValueArg&lt;int&gt;</code>
will attempt to parse an will attempt to parse an
@ -256,7 +254,7 @@ parse a float, etc. If <code class="methodname">operator&gt;&gt;</code>
for the specified type doesn't for the specified type doesn't
recognize the string on the command line as its defined type, then recognize the string on the command line as its defined type, then
an exception will be thrown. an exception will be thrown.
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="MULTI_ARG"></a><code class="classname">MultiArg</code></h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="MULTI_ARG"></a><code class="classname">MultiArg</code></h2></div></div></div><p>
A <code class="classname">MultiArg</code> is a <code class="classname">ValueArg</code> that A <code class="classname">MultiArg</code> is a <code class="classname">ValueArg</code> that
can be specified more than once on a command line and instead of returning can be specified more than once on a command line and instead of returning
a single value, returns a <code class="classname">vector</code> of values. a single value, returns a <code class="classname">vector</code> of values.
@ -285,8 +283,8 @@ a <code class="classname">ValueArg</code>:
</pre><p> </pre><p>
Note that <code class="classname">MultiArg</code>s can be added to the Note that <code class="classname">MultiArg</code>s can be added to the
<code class="classname">CmdLine</code> in any order (unlike <code class="classname">CmdLine</code> in any order (unlike
<a href="#UNLABELED_MULTI_ARG" title="UnlabeledMultiArg"> UnlabeledMultiArg</a>). <a class="link" href="#UNLABELED_MULTI_ARG" title="UnlabeledMultiArg"> UnlabeledMultiArg</a>).
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="MULTI_SWITCH_ARG"></a><code class="classname">MultiSwitchArg</code></h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="MULTI_SWITCH_ARG"></a><code class="classname">MultiSwitchArg</code></h2></div></div></div><p>
A <code class="classname">MultiSwitchArg</code> is a <code class="classname">SwitchArg</code> A <code class="classname">MultiSwitchArg</code> is a <code class="classname">SwitchArg</code>
that can be specified more than once on a command line. that can be specified more than once on a command line.
This can be useful This can be useful
@ -307,7 +305,7 @@ Alternatively, you can specify your own initial value:
MultiSwitchArg quiet("q","quiet","Reduce the volume of output",5); MultiSwitchArg quiet("q","quiet","Reduce the volume of output",5);
cmd.add( quiet ); cmd.add( quiet );
</pre><p> </pre><p>
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="UNLABELED_VALUE_ARG"></a><code class="classname">UnlabeledValueArg</code></h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="UNLABELED_VALUE_ARG"></a><code class="classname">UnlabeledValueArg</code></h2></div></div></div><p>
An <code class="classname">UnlabeledValueArg</code> is a <code class="classname">ValueArg</code> that is not identified by a flag on the command line. Instead An <code class="classname">UnlabeledValueArg</code> is a <code class="classname">ValueArg</code> that is not identified by a flag on the command line. Instead
<code class="classname">UnlabeledValueArg</code>s are identified by their position in <code class="classname">UnlabeledValueArg</code>s are identified by their position in
the argv array. the argv array.
@ -316,7 +314,7 @@ To this point all of our arguments have had labels (flags)
identifying them on the command line, but there are some identifying them on the command line, but there are some
situations where flags are burdensome and not worth the effort. One situations where flags are burdensome and not worth the effort. One
example might be if you want to implement a magical command we'll example might be if you want to implement a magical command we'll
call <span><strong class="command">copy</strong></span>. All <span><strong class="command">copy</strong></span> does is call <span class="command"><strong>copy</strong></span>. All <span class="command"><strong>copy</strong></span> does is
copy the file specified copy the file specified
in the first argument to the file specified in the second argument. in the first argument to the file specified in the second argument.
We can do this using <code class="classname">UnlabeledValueArg</code>s which are pretty We can do this using <code class="classname">UnlabeledValueArg</code>s which are pretty
@ -327,7 +325,7 @@ The code would look like this:
</p><pre class="programlisting"> </p><pre class="programlisting">
UnlabeledValueArg&lt;float&gt; nolabel( "name", "unlabeled test", 3.14, UnlabeledValueArg&lt;float&gt; nolabel( "name", "unlabeled test", true, 3.14,
"nameString" ); "nameString" );
cmd.add( nolabel ); cmd.add( nolabel );
@ -348,7 +346,7 @@ args (SwitchArgs and ValueArgs) in between
or in the declaration), but the <code class="classname">UnlabeledValueArgs</code> or in the declaration), but the <code class="classname">UnlabeledValueArgs</code>
will still be parsed in the order they are added. Just remember that order is will still be parsed in the order they are added. Just remember that order is
important for unlabeled arguments. important for unlabeled arguments.
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="UNLABELED_MULTI_ARG"></a><code class="classname">UnlabeledMultiArg</code></h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="UNLABELED_MULTI_ARG"></a><code class="classname">UnlabeledMultiArg</code></h2></div></div></div><p>
An <code class="classname">UnlabeledMultiArg</code> is an <code class="classname">UnlabeledValueArg</code> that allows more than one value to be specified. Only one An <code class="classname">UnlabeledMultiArg</code> is an <code class="classname">UnlabeledValueArg</code> that allows more than one value to be specified. Only one
<code class="classname">UnlabeledMultiArg</code> can be specified per command line. <code class="classname">UnlabeledMultiArg</code> can be specified per command line.
The <code class="classname">UnlabeledMultiArg</code> simply reads the remaining The <code class="classname">UnlabeledMultiArg</code> simply reads the remaining
@ -356,7 +354,7 @@ values from argv up until -- or the end of the array is reached.
</p><p> </p><p>
Say you want a strange command Say you want a strange command
that searches each file specified for a given string (let's call it that searches each file specified for a given string (let's call it
<span><strong class="command">grep</strong></span>), but you don't want to have to type in all of the file <span class="command"><strong>grep</strong></span>), but you don't want to have to type in all of the file
names or write a script to do it for you. Say, names or write a script to do it for you. Say,
</p><pre class="programlisting"> </p><pre class="programlisting">
@ -364,7 +362,7 @@ names or write a script to do it for you. Say,
</pre><p> </pre><p>
First remember that the <span class="emphasis"><em>*</em></span> is handled by the shell and First remember that the <span class="emphasis"><em>*</em></span> is handled by the shell and
expanded accordingly, so what the program <span><strong class="command">grep</strong></span> sees is expanded accordingly, so what the program <span class="command"><strong>grep</strong></span> sees is
really something like: really something like:
</p><pre class="programlisting"> </p><pre class="programlisting">
@ -413,11 +411,11 @@ be multiple args of multiple types (stings, ints, floats, etc.)
then just declare the <code class="classname">UnlabeledMultiArg</code> as type then just declare the <code class="classname">UnlabeledMultiArg</code> as type
<code class="classname">string</code> and parse the different values yourself or use <code class="classname">string</code> and parse the different values yourself or use
several <code class="classname">UnlabeledValueArg</code>s. several <code class="classname">UnlabeledValueArg</code>s.
</p></div></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="COMPLICATIONS"></a>Chapter 3. Complications</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="#COMBINE_SWITCHES">I want to combine multiple switches into one argument...</a></span></dt><dt><span class="sect1"><a href="#XOR">I want one argument or the other, but not both...</a></span></dt><dt><span class="sect1"><a href="#NO_FLAG">I have more arguments than single flags make sense for...</a></span></dt><dt><span class="sect1"><a href="#CONSTRAINT">I want to constrain the values allowed for a particular </p></div></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="COMPLICATIONS"></a>Chapter 3. Complications</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="sect1"><a href="#COMBINE_SWITCHES">I want to combine multiple switches into one argument...</a></span></dt><dt><span class="sect1"><a href="#XOR">I want one argument or the other, but not both...</a></span></dt><dt><span class="sect1"><a href="#NO_FLAG">I have more arguments than single flags make sense for...</a></span></dt><dt><span class="sect1"><a href="#CONSTRAINT">I want to constrain the values allowed for a particular
argument...</a></span></dt><dt><span class="sect1"><a href="#ARG_ADD_CMDLINE">I want the Args to add themselves to the CmdLine...</a></span></dt><dt><span class="sect1"><a href="#CHANGE_OUTPUT">I want different output than what is provided...</a></span></dt><dt><span class="sect1"><a href="#NO_HELP_VERSION">I don't want the --help and --version switches to be created automatically...</a></span></dt><dt><span class="sect1"><a href="#IGNORE_ARGS">I want to ignore certain arguments...</a></span></dt><dt><span class="sect1"><a href="#IGNORE_UNMATCHED">I want to ignore unmatched arguments...</a></span></dt><dt><span class="sect1"><a href="#READING_HEX_INTEGERS">I want to read hex integers as arguments...</a></span></dt><dt><span class="sect1"><a href="#USING_ARGTRAITS">I want to use different types...</a></span></dt><dt><span class="sect1"><a href="#CHANGING_STARTSTRINGS">I want to use Windows-style flags like "/x" and "/y"...</a></span></dt></dl></div><p> argument...</a></span></dt><dt><span class="sect1"><a href="#ARG_ADD_CMDLINE">I want the Args to add themselves to the CmdLine...</a></span></dt><dt><span class="sect1"><a href="#CHANGE_OUTPUT">I want different output than what is provided...</a></span></dt><dt><span class="sect1"><a href="#NO_HELP_VERSION">I don't want the --help and --version switches to be created automatically...</a></span></dt><dt><span class="sect1"><a href="#IGNORE_ARGS">I want to ignore certain arguments...</a></span></dt><dt><span class="sect1"><a href="#IGNORE_UNMATCHED">I want to ignore unmatched arguments...</a></span></dt><dt><span class="sect1"><a href="#READING_HEX_INTEGERS">I want to read hex integers as arguments...</a></span></dt><dt><span class="sect1"><a href="#USING_ARGTRAITS">I want to use different types...</a></span></dt><dt><span class="sect1"><a href="#CHANGING_STARTSTRINGS">I want to use Windows-style flags like "/x" and "/y"...</a></span></dt></dl></div><p>
Naturally, what we have seen to this point doesn't satisfy all of Naturally, what we have seen to this point doesn't satisfy all of
our needs. our needs.
</p><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="COMBINE_SWITCHES"></a>I want to combine multiple switches into one argument...</h2></div></div></div><p> </p><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="COMBINE_SWITCHES"></a>I want to combine multiple switches into one argument...</h2></div></div></div><p>
Multiple <code class="classname">SwitchArg</code>s can be combined into a Multiple <code class="classname">SwitchArg</code>s can be combined into a
single argument on the command line. If you have switches -a, -b and -c single argument on the command line. If you have switches -a, -b and -c
it is valid to do either: it is valid to do either:
@ -440,7 +438,7 @@ it is valid to do either:
This is to make this library more in line with the POSIX and GNU This is to make this library more in line with the POSIX and GNU
standards (as I understand them). standards (as I understand them).
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="XOR"></a>I want one argument or the other, but not both...</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="XOR"></a>I want one argument or the other, but not both...</h2></div></div></div><p>
Suppose you have a command that must read input from one of two Suppose you have a command that must read input from one of two
possible locations, either a local file or a URL. The command possible locations, either a local file or a URL. The command
<span class="emphasis"><em>must</em></span> read something, so <span class="emphasis"><em>one</em></span> <span class="emphasis"><em>must</em></span> read something, so <span class="emphasis"><em>one</em></span>
@ -518,7 +516,7 @@ requires additional information.
</pre><p> </pre><p>
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="NO_FLAG"></a>I have more arguments than single flags make sense for...</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="NO_FLAG"></a>I have more arguments than single flags make sense for...</h2></div></div></div><p>
Some commands have so many options that single flags no longer map Some commands have so many options that single flags no longer map
sensibly to the available options. In this case, it is desirable to sensibly to the available options. In this case, it is desirable to
specify <code class="classname">Arg</code>s using only long options. This one is easy to specify <code class="classname">Arg</code>s using only long options. This one is easy to
@ -534,7 +532,7 @@ option on the command line. The help output is updated accordingly.
SwitchArg caseSwitch("","upperCase","Print in upper case",false); SwitchArg caseSwitch("","upperCase","Print in upper case",false);
</pre><p> </pre><p>
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="CONSTRAINT"></a>I want to constrain the values allowed for a particular </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="CONSTRAINT"></a>I want to constrain the values allowed for a particular
argument...</h2></div></div></div><p> argument...</h2></div></div></div><p>
<span class="emphasis"><em>Interface Change!!!</em></span> Sorry folks, but we've changed <span class="emphasis"><em>Interface Change!!!</em></span> Sorry folks, but we've changed
the interface since version 1.0.X for constraining <code class="classname">Arg</code>s. the interface since version 1.0.X for constraining <code class="classname">Arg</code>s.
@ -587,7 +585,7 @@ implements the <code class="classname">Constraint&lt;int&gt;</code> interface an
checks whether the value parsed is greater than 0 (done in the checks whether the value parsed is greater than 0 (done in the
<code class="methodname">check()</code> method) and create your <code class="methodname">check()</code> method) and create your
<code class="classname">Arg</code> with your new <code class="classname">Constraint</code>. <code class="classname">Arg</code> with your new <code class="classname">Constraint</code>.
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="ARG_ADD_CMDLINE"></a>I want the Args to add themselves to the CmdLine...</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="ARG_ADD_CMDLINE"></a>I want the Args to add themselves to the CmdLine...</h2></div></div></div><p>
New constructors have been added for each <code class="classname">Arg</code> New constructors have been added for each <code class="classname">Arg</code>
that take a <code class="classname">CmdLine</code> object as an argument. that take a <code class="classname">CmdLine</code> object as an argument.
Each <code class="classname">Arg</code> then Each <code class="classname">Arg</code> then
@ -618,7 +616,7 @@ is an example:
cmd.parse(argc,argv); cmd.parse(argc,argv);
</pre><p> </pre><p>
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="CHANGE_OUTPUT"></a>I want different output than what is provided...</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="CHANGE_OUTPUT"></a>I want different output than what is provided...</h2></div></div></div><p>
It is straightforward to change the output generated by It is straightforward to change the output generated by
<span class="emphasis"><em>TCLAP</em></span>. Either subclass the <span class="emphasis"><em>TCLAP</em></span>. Either subclass the
<code class="classname">StdOutput</code> class and re-implement the methods you choose, <code class="classname">StdOutput</code> class and re-implement the methods you choose,
@ -671,7 +669,7 @@ could lead to a (very small) memory leak if you don't take care of the object
yourself. Also note that the <code class="methodname">failure</code> method is yourself. Also note that the <code class="methodname">failure</code> method is
now responsible for exiting the application (assuming that is the desired now responsible for exiting the application (assuming that is the desired
behavior). behavior).
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="NO_HELP_VERSION"></a>I don't want the --help and --version switches to be created automatically...</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="NO_HELP_VERSION"></a>I don't want the --help and --version switches to be created automatically...</h2></div></div></div><p>
Help and version information is useful for nearly all command line applications Help and version information is useful for nearly all command line applications
and as such we generate flags that provide those options automatically. and as such we generate flags that provide those options automatically.
However, there are situations when these flags are undesirable. For these However, there are situations when these flags are undesirable. For these
@ -681,7 +679,7 @@ false will disable automatic help and version generation.
</p><pre class="programlisting"> </p><pre class="programlisting">
CmdLine cmd("this is a message", ' ', "0.99", false ); CmdLine cmd("this is a message", ' ', "0.99", false );
</pre><p> </pre><p>
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="IGNORE_ARGS"></a>I want to ignore certain arguments...</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="IGNORE_ARGS"></a>I want to ignore certain arguments...</h2></div></div></div><p>
The <em class="parameter"><code>--</code></em> flag is automatically included in the The <em class="parameter"><code>--</code></em> flag is automatically included in the
<code class="classname">CmdLine</code>. <code class="classname">CmdLine</code>.
As (almost) per POSIX and GNU standards, any argument specified As (almost) per POSIX and GNU standards, any argument specified
@ -702,8 +700,8 @@ Of course, this isn't how POSIX/GNU handle things, they explicitly
ignore arguments after the <em class="parameter"><code>--</code></em>. To accommodate this, ignore arguments after the <em class="parameter"><code>--</code></em>. To accommodate this,
we can make both <code class="classname">UnlabeledValueArg</code>s and we can make both <code class="classname">UnlabeledValueArg</code>s and
<code class="classname">UnlabeledMultiArg</code>s ignoreable in their constructors. <code class="classname">UnlabeledMultiArg</code>s ignoreable in their constructors.
See the <a href="html/index.html" target="_top"> API Documentation</a> for details. See the <a class="ulink" href="html/index.html" target="_top"> API Documentation</a> for details.
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="IGNORE_UNMATCHED"></a>I want to ignore unmatched arguments...</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="IGNORE_UNMATCHED"></a>I want to ignore unmatched arguments...</h2></div></div></div><p>
By default, if <span class="emphasis"><em>TCLAP</em></span> sees an argument that doesn't By default, if <span class="emphasis"><em>TCLAP</em></span> sees an argument that doesn't
match a specified <code class="classname">Arg</code>, it will produce an exception. match a specified <code class="classname">Arg</code>, it will produce an exception.
This strict handling provides some assurance that all input to a program This strict handling provides some assurance that all input to a program
@ -754,7 +752,7 @@ parser.
is set to true and an <code class="classname">UnlabeledMultiArg</code> is added to is set to true and an <code class="classname">UnlabeledMultiArg</code> is added to
the command line, then the <code class="classname">UnlabeledMultiArg</code> will the command line, then the <code class="classname">UnlabeledMultiArg</code> will
"win" and all extra arguments will be added to it rather than be ignored. "win" and all extra arguments will be added to it rather than be ignored.
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="READING_HEX_INTEGERS"></a>I want to read hex integers as arguments...</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="READING_HEX_INTEGERS"></a>I want to read hex integers as arguments...</h2></div></div></div><p>
Sometimes it's desirable to read integers formatted in decimal, hexadecimal, Sometimes it's desirable to read integers formatted in decimal, hexadecimal,
and octal format. This is now possible by #defining the <em class="parameter"><code>TCLAP_SETBASE_ZERO</code></em> and octal format. This is now possible by #defining the <em class="parameter"><code>TCLAP_SETBASE_ZERO</code></em>
directive. Simply define this directive in your code and integer arguments will be parsed directive. Simply define this directive in your code and integer arguments will be parsed
@ -800,7 +798,7 @@ The reason that this behavior is not the default behavior for <span class="empha
<code class="methodname">setbase()</code> is meant to be used. So while we're making this functionality <code class="methodname">setbase()</code> is meant to be used. So while we're making this functionality
available, we're not turning it on by default for fear of bad things happening in different compilers. available, we're not turning it on by default for fear of bad things happening in different compilers.
If you know otherwise, please let us know. If you know otherwise, please let us know.
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="USING_ARGTRAITS"></a>I want to use different types...</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="USING_ARGTRAITS"></a>I want to use different types...</h2></div></div></div><p>
The usual C++ types (int, long, bool, etc.) are supported by <span class="emphasis"><em>TCLAP</em></span> out The usual C++ types (int, long, bool, etc.) are supported by <span class="emphasis"><em>TCLAP</em></span> out
of the box. As of the box. As
long as operator&gt;&gt; and operator&lt;&lt; are supported, other types should work fine long as operator&gt;&gt; and operator&lt;&lt; are supported, other types should work fine
@ -826,7 +824,7 @@ To accomplish this, add the following declaration to your file:
For complete examples see the files <code class="filename">test11.cpp</code> For complete examples see the files <code class="filename">test11.cpp</code>
and <code class="filename">test12.cpp</code> in the examples directory. and <code class="filename">test12.cpp</code> in the examples directory.
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="CHANGING_STARTSTRINGS"></a>I want to use Windows-style flags like "/x" and "/y"...</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="CHANGING_STARTSTRINGS"></a>I want to use Windows-style flags like "/x" and "/y"...</h2></div></div></div><p>
It is traditional in Posix environments that the "-" and "--" strings are used to signify It is traditional in Posix environments that the "-" and "--" strings are used to signify
the beginning of argument flags and long argument names. However, other environments, the beginning of argument flags and long argument names. However, other environments,
namely Windows, use different strings. <span class="emphasis"><em>TCLAP</em></span> allows you to namely Windows, use different strings. <span class="emphasis"><em>TCLAP</em></span> allows you to
@ -857,14 +855,14 @@ int main(int argc, char** argv)
</pre><p> </pre><p>
</p></div></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="NOTES"></a>Chapter 4. Notes</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="#DESCRIPTION_EXCEPTIONS">Type Descriptions</a></span></dt><dt><span class="sect1"><a href="#VISITORS">Visitors</a></span></dt><dt><span class="sect1"><a href="#MORE_INFO">More Information</a></span></dt></dl></div><p> </p></div></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="NOTES"></a>Chapter 4. Notes</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="sect1"><a href="#DESCRIPTION_EXCEPTIONS">Type Descriptions</a></span></dt><dt><span class="sect1"><a href="#VISITORS">Visitors</a></span></dt><dt><span class="sect1"><a href="#MORE_INFO">More Information</a></span></dt></dl></div><p>
Like all good rules, there are many exceptions.... Like all good rules, there are many exceptions....
</p><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="DESCRIPTION_EXCEPTIONS"></a>Type Descriptions</h2></div></div></div><p> </p><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="DESCRIPTION_EXCEPTIONS"></a>Type Descriptions</h2></div></div></div><p>
Ideally this library would use RTTI to return a human readable name Ideally this library would use RTTI to return a human readable name
of the type declared for a particular argument. Unfortunately, at of the type declared for a particular argument. Unfortunately, at
least for <span><strong class="command">g++</strong></span>, the names returned aren't least for <span class="command"><strong>g++</strong></span>, the names returned aren't
particularly useful. particularly useful.
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="VISITORS"></a>Visitors</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="VISITORS"></a>Visitors</h2></div></div></div><p>
Disclaimer: Almost no one will have any use for Disclaimer: Almost no one will have any use for
<code class="classname">Visitor</code>s, they were <code class="classname">Visitor</code>s, they were
added to provide special handling for default arguments. Nothing added to provide special handling for default arguments. Nothing
@ -933,8 +931,8 @@ Now, any time the <em class="parameter"><code>-a</code></em> or
the program will print the author name, Homer J. Simpson and exit the program will print the author name, Homer J. Simpson and exit
without processing any further (as specified in the without processing any further (as specified in the
<code class="methodname">visit()</code> method). <code class="methodname">visit()</code> method).
</p></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="MORE_INFO"></a>More Information</h2></div></div></div><p> </p></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="MORE_INFO"></a>More Information</h2></div></div></div><p>
For more information, look at the <a href="html/index.html" target="_top"> For more information, look at the <a class="ulink" href="html/index.html" target="_top">
API Documentation</a> and the examples included with the API Documentation</a> and the examples included with the
distribution. distribution.
</p><p> </p><p>