Options Class Reference

#include <opt.h>

Public Types
enum	loop_val { OPT_ERR , OPT_MSG , OPT_HELP , OPT_DONE }

Public Member Functions
	Options (bool useDef=true)
void	useDefOption ()
bool	insert (const Pmc_option &opt)
const char *	get_help () const
const std::string &	get_msg () const
const char *	get_msg_c () const
loop_val	parse_options (int argc, char *const argv[])
bool	have (char opt) const
const std::string &	val (char opt) const
const char *	val_c (char opt) const
int	val_i (char opt) const
char	get_net_transport () const
bool	have_more () const
int	process_next () const

Detailed Description

Hold and process options

Member Enumeration Documentation

loop_val

enum Options::loop_val

parsing return code

Enumerator
OPT_ERR	Parsing error
OPT_MSG	Pass a message from parsing like a version string
OPT_HELP	Need to print help
OPT_DONE	parsing success

Constructor & Destructor Documentation

Options()

Options::Options

(

bool

useDef = true

)

constructor

Parameters

[in]

useDef

use PMC default options

Member Function Documentation

get_help()

const char * Options::get_help

(

)

const

Get help message

Returns

help message

get_msg()

const std::string & Options::get_msg

(

)

const

Get parse_options() message

Returns

message from last parse_options()

get_msg_c()

const char * Options::get_msg_c

(

)

const

Get parse_options() message

Returns

message from last parse_options()

get_net_transport()

char Options::get_net_transport

(

)

const

get Network Transport value

Returns

Network Transport

Note

return 0 if not select on command line

have()

bool Options::have

(

char

opt

)

const

Is option on command line

Parameters

[in]

opt

short option character

Returns

true if option on command line

have_more()

bool Options::have_more

(

)

const

Do we have more argumends on the command line, left unprocessed

Returns

true if we have more to process

insert()

bool Options::insert

(

const Pmc_option &

opt

)

Insert option

Parameters

[in]

opt

new option parameters

Returns

true on adding the option

Note

should be called before calling parse_options()

parse_options()

loop_val Options::parse_options	(	int	argc,
		char *const	argv[]
	)

Parse command line

Parameters

[in]	argc	number of arguments
[in]	argv	array of command line arguments

Returns

Parse state

Note

Follow the command line. Argument 0 is the application name,
as appear in the command line.
The class do not store it.

Regarding using scripts:
Python, Go and PHP uses full argument list.
With Ruby, Perl, Tcl and Lua, users need to add argument 0. To call from scripts:
Python

obj.parse_options(sys.argv) 

Go

obj.Parse_options(os.Args) 

PHP

$obj->parse_options($argv) 

Ruby

$obj.parse_options([$0] + ARGV) 

Perl

obj->parse_options([$0, @@ARGV]); 

Tcl

obj parse_options [list {*}$argv0 {*}$@::argv] 

Lua

table.insert(arg, 1, arg[0])
obj:parse_options(arg) 

process_next()

int Options::process_next

(

)

const

First argumend on the command line, left unprocessed

Returns

index of argument

useDefOption()

void Options::useDefOption

(

)

Use PMC default options

val()

const std::string & Options::val

(

char

opt

)

const

get option value

Parameters

[in]

opt

short option character

Returns

option value

Note

relevant for option with argument

val_c()

const char * Options::val_c

(

char

opt

)

const

get option value

Parameters

[in]

opt

short option character

Returns

option char pointer of value string (C style)

Note

relevant for option with argument

val_i()

int Options::val_i

(

char

opt

)

const

get option integer value

Parameters

[in]

opt

short option character

Returns

option integer value

Note

relevant for option with argument of integer value

---

The documentation for this class was generated from the following file:

• pub/opt.h