wxCmdLineParser is a class for parsing command line.
It has the following features:
-\begin{enumerate}
+
+\begin{enumerate}\itemsep=0pt
\item distinguishes options, switches and parameters; allows option grouping
\item allows both short and long options
\item automatically generates the usage message from the command line description
\end{enumerate}
To use it you should follow these steps:
-\begin{enumerate}
+
+\begin{enumerate}\itemsep=0pt
\item \helpref{construct}{wxcmdlineparserconstruction} an object of this class
giving it the command line to parse and optionally its description or use
{\tt AddXXX()} functions later
The type of a command line entity is in the {\tt kind} field and may be one of
the following constants:
-{\small \begin{verbatim}
+
+{\small%
+\begin{verbatim}
enum wxCmdLineEntryType
{
- wxCMD\_LINE\_SWITCH,
- wxCMD\_LINE\_OPTION,
- wxCMD\_LINE\_PARAM,
- wxCMD\_LINE\_NONE // use this to terminate the list
+ wxCMD_LINE_SWITCH,
+ wxCMD_LINE_OPTION,
+ wxCMD_LINE_PARAM,
+ wxCMD_LINE_NONE // use this to terminate the list
+}
+\end{verbatim}
}
-\end{verbatim}}
The field {\tt shortName} is the usual, short, name of the switch or the option.
{\tt longName} is the corresponding long name or NULL if the option has no long
The possible values of {\tt type} which specifies the type of the value accepted
by an option or parameter are:
-{\small \begin{verbatim}
+
+{\small%
+\begin{verbatim}
enum wxCmdLineParamType
{
- wxCMD\_LINE\_VAL\_STRING, // default
- wxCMD\_LINE\_VAL\_NUMBER,
- wxCMD\_LINE\_VAL\_DATE,
- wxCMD\_LINE\_VAL\_NONE
+ wxCMD_LINE_VAL_STRING, // default
+ wxCMD_LINE_VAL_NUMBER,
+ wxCMD_LINE_VAL_DATE,
+ wxCMD_LINE_VAL_NONE
+}
+\end{verbatim}
}
-\end{verbatim}}
Finally, the {\tt flags} field is a combination of the following bit masks:
-{\small \begin{verbatim}
+
+{\small%
+\begin{verbatim}
enum
{
- wxCMD\_LINE\_OPTION\_MANDATORY = 0x01, // this option must be given
- wxCMD\_LINE\_PARAM\_OPTIONAL = 0x02, // the parameter may be omitted
- wxCMD\_LINE\_PARAM\_MULTIPLE = 0x04, // the parameter may be repeated
- wxCMD\_LINE\_OPTION\_HELP = 0x08, // this option is a help request
- wxCMD\_LINE\_NEEDS\_SEPARATOR = 0x10, // must have sep before the value
+ wxCMD_LINE_OPTION_MANDATORY = 0x01, // this option must be given
+ wxCMD_LINE_PARAM_OPTIONAL = 0x02, // the parameter may be omitted
+ wxCMD_LINE_PARAM_MULTIPLE = 0x04, // the parameter may be repeated
+ wxCMD_LINE_OPTION_HELP = 0x08, // this option is a help request
+ wxCMD_LINE_NEEDS_SEPARATOR = 0x10, // must have sep before the value
+}
+\end{verbatim}
}
-\end{verbatim}}
Notice that by default (i.e. if flags are just $0$), options are optional (sic)
and each call to \helpref{AddParam()}{wxcmdlineparseraddparam} allows one more
\membersection{Parsing command line}\label{wxcmdlineparserparsing}
-After the command line description was constructed and the desiredoptions were
+After the command line description was constructed and the desired options were
set, you can finally call \helpref{Parse}{wxcmdlineparserparse} method.
It returns $0$ if the command line was correct and was parsed, $-1$ if the help
option was specified (this is a separate case as, normally, the program will
\func{}{wxCmdLineParser}{\void}
Default constructor. You must use
-\helpref{SetCmdLine}{wxcmdlineparsersetcmdlineargc} or
-\helpref{SetCmdLinelater.}{wxcmdlineparsersetcmdlinestr} later.
+\helpref{SetCmdLine}{wxcmdlineparsersetcmdlineargc} later.
\membersection{wxCmdLineParser::wxCmdLineParser}\label{wxcmdlineparserwxcmdlineparserargc}