sourCEntral - mobile manpages

pdf

ost::CommandOption

NAME

ost::CommandOption −

CommandOption is the base class for all command line options.

SYNOPSIS

#include <cmdoptns.h>

Inherited by ost::CommandOptionNoArg, and ost::CommandOptionWithArg.

Public Types

enum OptionType { hasArg, noArg, trailing, collect }
OptionType is for denoting what type of option this is, with an arg, without an arg or the trailing args.

Public Member Functions

virtual ~CommandOption ()
A virtual destructor just in case.

CommandOption
(const char *inOptionName, const char *inOptionLetter, const char *inDescription, OptionType inOptionType, bool inRequired=false, CommandOption **ppNext=&defaultCommandOptionList)
CommandOption
contructor.
virtual void foundOption (CommandOptionParse *cop, const char *value=0)
foundOption is called by the
CommandOptionParse object during the parsing of the command line options.
virtual void foundOption (CommandOptionParse *cop, const char **value, int num)
foundOption is called by the
CommandOptionParse object during the parsing of the command line options.
virtual void parseDone (CommandOptionParse *cop)
Once parsing of command line options is complete, this method is called.

virtual void performTask (CommandOptionParse *cop)
Once
CommandOption objects have completed parsing and there are no errors they may have some specific tasks to perform.
virtual bool hasValue ()
For fields with the required flag set, this method is used to determine if the Option has satisfied it’s required status.

Public Attributes

const char * optionName
Long option name, these will be preceded with ’--’ on the command line.

const char * optionLetter
option letter, these will be preceded with ’-’ on the command line.

const char * description
A short description of the option for Usage messages.

OptionType optionType

This command option’s OptionType.

bool required
True if this parameter is required.

CommandOption
* next
This next
CommandOption in this list of options or nil if no more options exist.

Detailed Description

CommandOption is the base class for all command line options.

Command line options can be defined statically and used when constructing a command line parser onject using makeCommandOptionParse. This serves only as a base class to CommandOptionWithArg, CommandOptionRest or CommandOptionNoArg which can also be used to derive more complex classes or even entire applications.

Author:

Gianni Mariani <gianni AT mariani DOT ws>

Examples:

cmdlineopt.cpp.

Member Enumeration Documentation

enum ost::CommandOption::OptionType
OptionType is for denoting what type of option this is, with an arg, without an arg or the trailing args. Option type

Enumerator:

hasArg

This option is associated with a value.

noArg

This option is a flag only.

trailing

Remaining of the command line arguments.

collect

Collect values that are not a value to an option.

Constructor & Destructor Documentation

virtual ost::CommandOption::~CommandOption () [virtual]
A virtual destructor just in case.

ost::CommandOption::CommandOption (const char * inOptionName, const char * inOptionLetter, const char * inDescription, OptionType inOptionType, bool inRequired = false, CommandOption ** ppNext = &defaultCommandOptionList)
CommandOption
contructor. Note the default values for required and ppNext.

Parameters:

inOptionName long option name
inOptionLetter
short letter name
inDescription
short description of the option
inOptionType
the type of this option
inRequired
true if option is required
ppNext
the linked list header

Member Function Documentation

virtual void ost::CommandOption::foundOption (CommandOptionParse * cop, const char ** value, int num) [virtual]
foundOption is called by the CommandOptionParse object during the parsing of the command line options. Parameters:

cop pointer to the command option parser
value
an array of values of this option
num
number of values in the array

Reimplemented in ost::CommandOptionWithArg.

virtual void ost::CommandOption::foundOption (CommandOptionParse * cop, const char * value = 0) [virtual]
foundOption is called by the CommandOptionParse object during the parsing of the command line options. Parameters:

cop pointer to the command option parser
value
the value of this option

Reimplemented in ost::CommandOptionWithArg, and ost::CommandOptionNoArg.

virtual bool ost::CommandOption::hasValue () [virtual]
For fields with the required flag set, this method is used to determine if the Option has satisfied it’s required status. The default methods simply returns true if any values have been found. This could be specialized to return true based on some other criteria.

Reimplemented in ost::CommandOptionWithArg.

virtual void ost::CommandOption::parseDone (CommandOptionParse * cop) [virtual]
Once parsing of command line options is complete, this method is called. This can be used to perform last minute checks on the options collected.

Parameters:

cop pointer to the command option parser

Examples:

cmdlineopt.cpp.

virtual void ost::CommandOption::performTask (CommandOptionParse * cop) [virtual]
Once CommandOption objects have completed parsing and there are no errors they may have some specific tasks to perform. PerformTask must return.

Parameters:

cop pointer to the command option parser

Examples:

cmdlineopt.cpp.

Member Data Documentation

const char* ost::CommandOption::description
A short description of the option for Usage messages. e.g. Usage: mycommand : blah -f, --file <DESCRIPTION here>

CommandOption* ost::CommandOption::next
This next CommandOption in this list of options or nil if no more options exist.

const char* ost::CommandOption::optionLetter
option letter, these will be preceded with ’-’ on the command line. e.g. -f foo.x

const char* ost::CommandOption::optionName
Long option name, these will be preceded with ’--’ on the command line. e.g. --file foo.x

OptionType ost::CommandOption::optionType
This command option’s OptionType.

bool ost::CommandOption::required
True if this parameter is required. If the parameter is not supplied and required is true, an error will be flagged in the option processor.

Author

Generated automatically by Doxygen for GNU CommonC++ from the source code.

pdf