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// Copyright (C) 2003 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_CMD_LINE_PARSER_KERNEl_C_
#define DLIB_CMD_LINE_PARSER_KERNEl_C_
#include "cmd_line_parser_kernel_abstract.h"
#include "../algs.h"
#include "../assert.h"
#include <string>
#include "../interfaces/cmd_line_parser_option.h"
#include "../string.h"
namespace dlib
{
template <
typename clp_base
>
class cmd_line_parser_kernel_c : public clp_base
{
public:
typedef typename clp_base::char_type char_type;
typedef typename clp_base::string_type string_type;
typedef typename clp_base::option_type option_type;
void add_option (
const string_type& name,
const string_type& description,
unsigned long number_of_arguments = 0
);
const option_type& option (
const string_type& name
) const;
unsigned long number_of_arguments(
) const;
const option_type& element (
) const;
option_type& element (
);
const string_type& operator[] (
unsigned long N
) const;
};
template <
typename clp_base
>
inline void swap (
cmd_line_parser_kernel_c<clp_base>& a,
cmd_line_parser_kernel_c<clp_base>& b
) { a.swap(b); }
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// member function definitions
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
template <
typename clp_base
>
const typename clp_base::string_type& cmd_line_parser_kernel_c<clp_base>::
operator[] (
unsigned long N
) const
{
// make sure requires clause is not broken
DLIB_CASSERT( this->parsed_line() == true && N < number_of_arguments(),
"\tvoid cmd_line_parser::operator[](unsigned long N)"
<< "\n\tYou must specify a valid index N and the parser must have run already."
<< "\n\tthis: " << this
<< "\n\tN: " << N
<< "\n\tparsed_line(): " << this->parsed_line()
<< "\n\tnumber_of_arguments(): " << number_of_arguments()
);
return clp_base::operator[](N);
}
// ----------------------------------------------------------------------------------------
template <
typename clp_base
>
void cmd_line_parser_kernel_c<clp_base>::
add_option (
const string_type& name,
const string_type& description,
unsigned long number_of_arguments
)
{
// make sure requires clause is not broken
DLIB_CASSERT( this->parsed_line() == false &&
name.size() > 0 &&
this->option_is_defined(name) == false &&
name.find_first_of(_dT(char_type," \t\n=")) == string_type::npos &&
name[0] != '-',
"\tvoid cmd_line_parser::add_option(const string_type&,const string_type&,unsigned long)"
<< "\n\tsee the requires clause of add_option()"
<< "\n\tthis: " << this
<< "\n\tname.size(): " << static_cast<unsigned long>(name.size())
<< "\n\tname: \"" << narrow(name) << "\""
<< "\n\tparsed_line(): " << (this->parsed_line()? "true" : "false")
<< "\n\tis_option_defined(\"" << narrow(name) << "\"): " << (this->option_is_defined(name)? "true" : "false")
);
clp_base::add_option(name,description,number_of_arguments);
}
// ----------------------------------------------------------------------------------------
template <
typename clp_base
>
const typename clp_base::option_type& cmd_line_parser_kernel_c<clp_base>::
option (
const string_type& name
) const
{
// make sure requires clause is not broken
DLIB_CASSERT( this->option_is_defined(name) == true,
"\toption cmd_line_parser::option(const string_type&)"
<< "\n\tto get an option it must be defined by a call to add_option()"
<< "\n\tthis: " << this
<< "\n\tname: \"" << narrow(name) << "\""
);
return clp_base::option(name);
}
// ----------------------------------------------------------------------------------------
template <
typename clp_base
>
unsigned long cmd_line_parser_kernel_c<clp_base>::
number_of_arguments(
) const
{
// make sure requires clause is not broken
DLIB_CASSERT( this->parsed_line() == true ,
"\tunsigned long cmd_line_parser::number_of_arguments()"
<< "\n\tyou must parse the command line before you can find out how many arguments it has"
<< "\n\tthis: " << this
);
return clp_base::number_of_arguments();
}
// ----------------------------------------------------------------------------------------
template <
typename clp_base
>
const typename clp_base::option_type& cmd_line_parser_kernel_c<clp_base>::
element (
) const
{
// make sure requires clause is not broken
DLIB_CASSERT(this->current_element_valid() == true,
"\tconst cmd_line_parser_option& cmd_line_parser::element()"
<< "\n\tyou can't access the current element if it doesn't exist"
<< "\n\tthis: " << this
);
// call the real function
return clp_base::element();
}
// ----------------------------------------------------------------------------------------
template <
typename clp_base
>
typename clp_base::option_type& cmd_line_parser_kernel_c<clp_base>::
element (
)
{
// make sure requires clause is not broken
DLIB_CASSERT(this->current_element_valid() == true,
"\tcmd_line_parser_option& cmd_line_parser::element()"
<< "\n\tyou can't access the current element if it doesn't exist"
<< "\n\tthis: " << this
);
// call the real function
return clp_base::element();
}
// ----------------------------------------------------------------------------------------
}
#endif // DLIB_CMD_LINE_PARSER_KERNEl_C_
|
