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/*=========================================================================
Program: KWSys - Kitware System Library
Module: $RCSfile$
Copyright (c) Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef @KWSYS_NAMESPACE@_CommandLineArguments_hxx
#define @KWSYS_NAMESPACE@_CommandLineArguments_hxx
#include <@KWSYS_NAMESPACE@/Configure.h>
#include <@KWSYS_NAMESPACE@/Configure.hxx>
#include <@KWSYS_NAMESPACE@/stl/string>
/* Define this macro temporarily to keep the code readable. */
#if !defined (KWSYS_NAMESPACE) && !@KWSYS_NAMESPACE@_NAME_IS_KWSYS
# define kwsys_stl @KWSYS_NAMESPACE@_stl
#endif
namespace @KWSYS_NAMESPACE@
{
class CommandLineArgumentsInternal;
/** \class CommandLineArguments
* \brief Command line arguments processing code.
*
* Find specified arguments with optional options and execute specified methods
* or set given variables.
*/
class @KWSYS_NAMESPACE@_EXPORT CommandLineArguments
{
public:
CommandLineArguments();
~CommandLineArguments();
/**
* Various argument types.
*/
enum ArgumentTypeEnum {
NO_ARGUMENT, // The option takes no argument --foo
CONCAT_ARGUMENT,// The option takes argument after no space --foobar
SPACE_ARGUMENT, // The option takes argument after space --foo bar
EQUAL_ARGUMENT // The option takes argument after equal --foo=bar
};
/**
* Various string types.
*/
enum VariableTypeEnum {
NO_VARIABLE_TYPE = 0, // The variable is not specified
INT_TYPE, // The variable is integer (int)
BOOL_TYPE, // The vairable is boolean (bool)
DOUBLE_TYPE, // The variable is float (double)
STRING_TYPE, // The variable is string (char*)
STL_STRING_TYPE // The variable is string (char*)
};
/**
* Prototypes for callbacks for callback interface.
*/
typedef int(*CallbackType)(const char* argument, const char* value,
void* call_data);
typedef int(*ErrorCallbackType)(const char* argument, void* client_data);
struct CallbackStructure
{
const char* Argument;
int ArgumentType;
CallbackType Callback;
void* CallData;
void* Variable;
int VariableType;
const char* Help;
};
/**
* Initialize internal data structures. This should be called before parsing.
*/
void Initialize(int argc, char* argv[]);
/**
* Initialize internal data structure and pass arguments one by one. This is
* convinience method for use from scripting languages where argc and argv
* are not available.
*/
void Initialize();
void ProcessArgument(const char* arg);
/**
* This method will parse arguments and call apropriate methods.
*/
int Parse();
/**
* This method will add a callback for a specific argument. The arguments to
* it are argument, argument type, callback method, and call data. The
* argument help specifies the help string used with this option. The
* callback and call_data can be skipped.
*/
void AddCallback(const char* argument, ArgumentTypeEnum type, CallbackType callback,
void* call_data, const char* help);
/**
* Add handler for argument which is going to set the variable to the
* specified value.
*/
void AddArgument(const char* argument, ArgumentTypeEnum type, VariableTypeEnum vtype, void* variable, const char* help);
void AddArgument(const char* argument, ArgumentTypeEnum type, bool* variable, const char* help);
void AddArgument(const char* argument, ArgumentTypeEnum type, int* variable, const char* help);
void AddArgument(const char* argument, ArgumentTypeEnum type, double* variable, const char* help);
void AddArgument(const char* argument, ArgumentTypeEnum type, char** variable, const char* help);
void AddArgument(const char* argument, ArgumentTypeEnum type, kwsys_stl::string* variable, const char* help);
void AddBooleanArgument(const char* argument, bool* variable, const char* help);
void AddBooleanArgument(const char* argument, int* variable, const char* help);
/**
* Set the callbacks for error handling.
*/
void SetClientData(void* client_data);
void SetUnknownArgumentCallback(ErrorCallbackType callback);
/**
* Get remaining arguments. It allocates space for argv, so you have to call
* delete[] on it.
*/
void GetRemainingArguments(int* argc, char*** argv);
/**
* Return string containing help. If the argument is specified, only return
* help for that argument.
*/
const char* GetHelp() { return this->Help.c_str(); }
const char* GetHelp(const char* arg);
/**
* Get / Set the help line length. Default length is 80.
*/
void SetLineLength();
unsigned int GetLineLength();
protected:
void GenerateHelp();
typedef CommandLineArgumentsInternal Internal;
Internal* Internals;
kwsys_stl::string Help;
unsigned int LineLength;
};
} // namespace @KWSYS_NAMESPACE@
/* Undefine temporary macro. */
#if !defined (KWSYS_NAMESPACE) && !@KWSYS_NAMESPACE@_NAME_IS_KWSYS
# undef kwsys_stl
#endif
#endif
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