Class ConsoleOptionParser

Handles parsing the ARGV in the command line and provides support for GetOpt compatible option definition. Provides a builder pattern implementation for creating shell option parsers.

Options

Named arguments come in two forms, long and short. Long arguments are preceded by two - and give a more verbose option name. i.e. --version. Short arguments are preceded by one - and are only one character long. They usually match with a long option, and provide a more terse alternative.

Using Options

Options can be defined with both long and short forms. By using $parser->addOption() you can define new options. The name of the option is used as its long form, and you can supply an additional short form, with the short option. Short options should only be one letter long. Using more than one letter for a short option will raise an exception.

Calling options can be done using syntax similar to most *nix command line tools. Long options cane either include an = or leave it out.

cake myshell command --connection default --name=something

Short options can be defined signally or in groups.

cake myshell command -cn

Short options can be combined into groups as seen above. Each letter in a group will be treated as a separate option. The previous example is equivalent to:

cake myshell command -c -n

Short options can also accept values:

cake myshell command -c default

Positional arguments

If no positional arguments are defined, all of them will be parsed. If you define positional arguments any arguments greater than those defined will cause exceptions. Additionally you can declare arguments as optional, by setting the required param to false.

$parser->addArgument('model', array('required' => false));

Providing Help text

By providing help text for your positional arguments and named arguments, the ConsoleOptionParser can generate a help display for you. You can view the help for shells by using the --help or -h switch.

Package: Cake\Console
Copyright: Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
License: MIT License
Location: Cake/Console/ConsoleOptionParser.php

Properties summary

$_args protected

array

Positional argument definitions.
$_command protected

string

Command name.
$_description protected

string

Description text - displays before options when help is generated
$_epilog protected

string

Epilog text - displays after options when help is generated
$_options protected

array

Option definitions.
$_shortOptions protected

string

Map of short -> long options, generated when using addOption()
$_subcommands protected

array

Subcommands for this Shell.

Method Summary

__construct() public

Construct an OptionParser so you can define its behavior
_nextToken() protected

Find the next token in the argv set.
_optionExists() protected

Check to see if $name has an option (short/long) defined for it.
_parseArg() protected

Parse an argument, and ensure that the argument doesn't exceed the number of arguments and that the argument is a valid choice.
_parseLongOption() protected

Parse the value for a long option out of $this->_tokens. Will handle options with an = in them.
_parseOption() protected

Parse an option by its name index.
_parseShortOption() protected

Parse the value for a short option out of $this->_tokens If the $option is a combination of multiple shortcuts like -otf they will be shifted onto the token stack and parsed individually.
addArgument() public

Add a positional argument to the option parser.
addArguments() public

Add multiple arguments at once. Take an array of argument definitions. The keys are used as the argument names, and the values as params for the argument.
addOption() public

Add an option to the option parser. Options allow you to define optional or required parameters for your console application. Options are defined by the parameters they use.
addOptions() public

Add multiple options at once. Takes an array of option definitions. The keys are used as option names, and the values as params for the option.
addSubcommand() public

Append a subcommand to the subcommand list. Subcommands are usually methods on your Shell, but can also be used to document Tasks.
addSubcommands() public

Add multiple subcommands at once.
arguments() public

Gets the arguments defined in the parser.
buildFromArray() public static

Build a parser from an array. Uses an array like
command() public

Get or set the command name for shell/task.
create() public static

Static factory method for creating new OptionParsers so you can chain methods off of them.
description() public

Get or set the description text for shell/task.
epilog() public

Get or set an epilog to the parser. The epilog is added to the end of the options and arguments listing when help is generated.
help() public

Gets formatted help for this parser object. Generates help text based on the description, options, arguments, subcommands and epilog in the parser.
options() public

Get the defined options in the parser.
parse() public

Parse the argv array into a set of params and args. If $command is not null and $command is equal to a subcommand that has a parser, that parser will be used to parse the $argv
removeSubcommand() public

Remove a subcommand from the option parser.
subcommands() public

Get the array of defined subcommands

Method Detail

__construct() public ¶

__construct( string $command = null , boolean $defaultOptions = true )

Construct an OptionParser so you can define its behavior

Parameters

string $command optional null: The command name this parser is for. The command name is used for generating help.
boolean $defaultOptions optional true: Whether you want the verbose and quiet options set. Setting this to false will prevent the addition of --verbose & --quiet options.

_nextToken() protected ¶

_nextToken( )

Find the next token in the argv set.

Returns

string
next token or ''

_optionExists() protected ¶

_optionExists( string $name )

Check to see if $name has an option (short/long) defined for it.

Parameters

string $name: The name of the option.

Returns

boolean

_parseArg() protected ¶

_parseArg( string $argument , array $args )

Parse an argument, and ensure that the argument doesn't exceed the number of arguments and that the argument is a valid choice.

Parameters

string $argument: The argument to append
array $args: The array of parsed args to append to.

Returns

array
Args

Throws

ConsoleException

_parseLongOption() protected ¶

_parseLongOption( string $option , array $params )

Parse the value for a long option out of $this->_tokens. Will handle options with an = in them.

Parameters

string $option: The option to parse.
array $params: The params to append the parsed value into

Returns

array
Params with $option added in.

_parseOption() protected ¶

_parseOption( string $name , array $params )

Parse an option by its name index.

Parameters

string $name: The name to parse.
array $params: The params to append the parsed value into

Returns

array
Params with $option added in.

Throws

ConsoleException

_parseShortOption() protected ¶

_parseShortOption( string $option , array $params )

Parse the value for a short option out of $this->_tokens If the $option is a combination of multiple shortcuts like -otf they will be shifted onto the token stack and parsed individually.

Parameters

string $option: The option to parse.
array $params: The params to append the parsed value into

Returns

array
Params with $option added in.

Throws

ConsoleException
When unknown short options are encountered.

addArgument() public ¶

addArgument( ConsoleInputArgument|string $name , array $params = array() )

Add a positional argument to the option parser.

Params

help The help text to display for this argument.
required Whether this parameter is required.
index The index for the arg, if left undefined the argument will be put onto the end of the arguments. If you define the same index twice the first option will be overwritten.
choices A list of valid choices for this argument. If left empty all values are valid.. An exception will be raised when parse() encounters an invalid value.

Parameters

ConsoleInputArgument|string $name: The name of the argument. Will also accept an instance of ConsoleInputArgument
array $params optional array(): Parameters for the argument, see above.

Returns

$this

addArguments() public ¶

addArguments( array $args )

Add multiple arguments at once. Take an array of argument definitions. The keys are used as the argument names, and the values as params for the argument.

Parameters

array $args: Array of arguments to add.

Returns

$this

See

ConsoleOptionParser::addArgument()

addOption() public ¶

addOption( ConsoleInputOption|string $name , array $options = array() )

Add an option to the option parser. Options allow you to define optional or required parameters for your console application. Options are defined by the parameters they use.

Options

short - The single letter variant for this option, leave undefined for none.
help - Help text for this option. Used when generating help for the option.
default - The default value for this option. Defaults are added into the parsed params when the attached option is not provided or has no value. Using default and boolean together will not work. are added into the parsed parameters when the option is undefined. Defaults to null.
boolean - The option uses no value, its just a boolean switch. Defaults to false. If an option is defined as boolean, it will always be added to the parsed params. If no present it will be false, if present it will be true.
choices A list of valid choices for this option. If left empty all values are valid.. An exception will be raised when parse() encounters an invalid value.

Parameters

ConsoleInputOption|string $name: The long name you want to the value to be parsed out as when options are parsed. Will also accept an instance of ConsoleInputOption
array $options optional array(): An array of parameters that define the behavior of the option

Returns

$this

addOptions() public ¶

addOptions( array $options )

Add multiple options at once. Takes an array of option definitions. The keys are used as option names, and the values as params for the option.

Parameters

array $options: Array of options to add.

Returns

$this

See

ConsoleOptionParser::addOption()

addSubcommand() public ¶

addSubcommand( ConsoleInputSubcommand|string $name , array $options = array() )

Append a subcommand to the subcommand list. Subcommands are usually methods on your Shell, but can also be used to document Tasks.

Options

help - Help text for the subcommand.
parser - A ConsoleOptionParser for the subcommand. This allows you to create method specific option parsers. When help is generated for a subcommand, if a parser is present it will be used.

Parameters

ConsoleInputSubcommand|string $name: Name of the subcommand. Will also accept an instance of ConsoleInputSubcommand
array $options optional array(): Array of params, see above.

Returns

$this

addSubcommands() public ¶

addSubcommands( array $commands )

Add multiple subcommands at once.

Parameters

array $commands: Array of subcommands.

Returns

$this

arguments() public ¶

arguments( )

Gets the arguments defined in the parser.

Returns

array
Array of argument descriptions

buildFromArray() public static ¶

buildFromArray( array $spec )

Build a parser from an array. Uses an array like

$spec = array(
    'description' => 'text',
    'epilog' => 'text',
    'arguments' => array(
        // list of arguments compatible with addArguments.
    ),
    'options' => array(
        // list of options compatible with addOptions
    ),
    'subcommands' => array(
        // list of subcommands to add.
    )
);

Parameters

array $spec: The spec to build the OptionParser with.

Returns

ConsoleOptionParser

command() public ¶

command( string $text = null )

Get or set the command name for shell/task.

Parameters

string $text optional null: The text to set, or null if you want to read

Returns

string|ConsoleOptionParser
$this If reading, the value of the command. If setting $this will be returned.

create() public static ¶

create( string $command , boolean $defaultOptions = true )

Static factory method for creating new OptionParsers so you can chain methods off of them.

Parameters

string $command: The command name this parser is for. The command name is used for generating help.
boolean $defaultOptions optional true: Whether you want the verbose and quiet options set.

Returns

ConsoleOptionParser

description() public ¶

description( string|array $text = null )

Get or set the description text for shell/task.

Parameters

string|array $text optional null: The text to set, or null if you want to read. If an array the text will be imploded with "\n"

Returns

string|ConsoleOptionParser
$this If reading, the value of the description. If setting $this will be returned.

epilog() public ¶

epilog( string|array $text = null )

Get or set an epilog to the parser. The epilog is added to the end of the options and arguments listing when help is generated.

Parameters

string|array $text optional null: Text when setting or null when reading. If an array the text will be imploded with "\n"

Returns

string|ConsoleOptionParser
$this If reading, the value of the epilog. If setting $this will be returned.

help() public ¶

help( string $subcommand = null , string $format = 'text' , integer $width = 72 )

Gets formatted help for this parser object. Generates help text based on the description, options, arguments, subcommands and epilog in the parser.

Parameters

string $subcommand optional null: If present and a valid subcommand that has a linked parser. That subcommands help will be shown instead.
string $format optional 'text': Define the output format, can be text or xml
integer $width optional 72: The width to format user content to. Defaults to 72

Returns

string
Generated help.

options() public ¶

options( )

Get the defined options in the parser.

Returns

array

parse() public ¶

parse( array $argv , string $command = null )

Parse the argv array into a set of params and args. If $command is not null and $command is equal to a subcommand that has a parser, that parser will be used to parse the $argv

Parameters

array $argv: Array of args (argv) to parse.
string $command optional null: The subcommand to use. If this parameter is a subcommand, that has a parser, That parser will be used to parse $argv instead.

Returns

Array
array($params, $args)

Throws

ConsoleException
When an invalid parameter is encountered.

removeSubcommand() public ¶

removeSubcommand( string $name )

Remove a subcommand from the option parser.

Parameters

string $name: The subcommand name to remove.

Returns

$this

subcommands() public ¶

subcommands( )

Get the array of defined subcommands

Returns

array

Properties detail

`$_args` ¶

protected array

Positional argument definitions.

See

ConsoleOptionParser::addArgument()

array()

`$_command` ¶

protected string

Command name.

''

`$_description` ¶

protected string

Description text - displays before options when help is generated

See

ConsoleOptionParser::description()

null

`$_epilog` ¶

protected string

Epilog text - displays after options when help is generated

See

ConsoleOptionParser::epilog()

null

`$_options` ¶

protected array

Option definitions.

See

ConsoleOptionParser::addOption()

array()

`$_shortOptions` ¶

protected string

Map of short -> long options, generated when using addOption()

array()

`$_subcommands` ¶

protected array

Subcommands for this Shell.

See

ConsoleOptionParser::addSubcommand()

array()

Packages

Classes

Class ConsoleOptionParser

Options

Using Options

Positional arguments

Providing Help text

Properties summary

Method Summary

__construct() public

_nextToken() protected

_optionExists() protected

_parseArg() protected

_parseLongOption() protected

_parseOption() protected

_parseShortOption() protected

addArgument() public

addArguments() public

addOption() public

addOptions() public

addSubcommand() public

addSubcommands() public

arguments() public

buildFromArray() public static

command() public

create() public static

description() public

epilog() public

help() public

options() public

parse() public

removeSubcommand() public

subcommands() public

Method Detail

__construct() public ¶

Parameters

_nextToken() protected ¶

Returns

_optionExists() protected ¶

Parameters

Returns

_parseArg() protected ¶

Parameters

Returns

Throws

_parseLongOption() protected ¶

Parameters

Returns

_parseOption() protected ¶

Parameters

Returns

Throws

_parseShortOption() protected ¶

Parameters

Returns

Throws

addArgument() public ¶

Params

Parameters

Returns

addArguments() public ¶

Parameters

Returns

See

addOption() public ¶

Options

Parameters

Returns

addOptions() public ¶

Parameters

Returns

See

addSubcommand() public ¶

Options

Parameters

Returns

addSubcommands() public ¶

Parameters

Returns

arguments() public ¶