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 singly 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', ['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.
Properties summary
-
$_args
protectedPositional argument definitions. -
$_command
protectedstring
Command name. -
$_description
protectedstring
Description text - displays before options when help is generated -
$_epilog
protectedstring
Epilog text - displays after options when help is generated -
$_options
protectedOption definitions. -
$_shortOptions
protectedarray
Map of short -> long options, generated when using addOption() -
$_subcommandSort
protectedboolean
Subcommand sorting option -
$_subcommands
protectedSubcommands for this Shell. -
$_tokens
protectedarray
Array of args (argv). -
$rootName
protectedstring
Root alias used in help output
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. -
argumentNames() public
Get the list of argument names. -
arguments() public
Gets the arguments defined in the parser. -
buildFromArray() public static
Build a parser from an array. Uses an array like -
command() public
Gets or sets 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. -
enableSubcommandSort() public
Enables sorting of subcommands -
epilog() public
Gets or sets an epilog to the parser. The epilog is added to the end of the options and arguments listing when help is generated.
-
findClosestItem() protected
Tries to guess the item name the user originally wanted using the some regex pattern and the levenshtein algorithm.
-
getCommand() public
Gets the command name for shell/task. -
getCommandError() protected
Get the message output in the console stating that the command can not be found and tries to guess what the user wanted to say. Output a list of available subcommands as well.
-
getDescription() public
Gets the description text for shell/task. -
getEpilog() public
Gets the epilog. -
getOptionError() protected
Get the message output in the console stating that the option can not be found and tries to guess what the user wanted to say. Output a list of available options as well.
-
getShortOptionError() protected
Get the message output in the console stating that the short option can not be found. Output a list of available short options and what option they refer to as well.
-
help() public
Gets formatted help for this parser object. -
isSubcommandSortEnabled() public
Checks whether or not sorting is enabled for subcommands. -
merge() public
Get or set the command name for shell/task. -
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
-
removeOption() public
Remove an option from the option parser. -
removeSubcommand() public
Remove a subcommand from the option parser. -
setCommand() public
Sets the command name for shell/task. -
setDescription() public
Sets the description text for shell/task. -
setEpilog() public
Sets an epilog to the parser. The epilog is added to the end of the options and arguments listing when help is generated.
-
setHelpAlias() public
Set the alias used in the HelpFormatter -
setRootName() public
Set the root name used in the HelpFormatter -
subcommands() public
Get the array of defined subcommands -
toArray() public
Returns an array representation of this parser.
Method Detail
__construct() public ¶
__construct( string|null $command null , boolean $defaultOptions true )
Construct an OptionParser so you can define its behavior
Parameters
- string|null $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
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
_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
Args
Throws
_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
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
Params with $option added in.
Throws
_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
Params with $option added in.
Throws
addArgument() public ¶
addArgument( Cake\Console\ConsoleInputArgument
|string $name , array $params [] )
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
-
Cake\Console\ConsoleInputArgument
|string $name The name of the argument. Will also accept an instance of ConsoleInputArgument.
- array $params optional []
- 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
addOption() public ¶
addOption( Cake\Console\ConsoleInputOption
|string $name , array $options [] )
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, it's 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.multiple
- The option can be provided multiple times. The parsed option will be an array of values when this option is enabled.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
-
Cake\Console\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 []
- 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
addSubcommand() public ¶
addSubcommand( Cake\Console\ConsoleInputSubcommand
|string $name , array $options [] )
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
-
Cake\Console\ConsoleInputSubcommand
|string $name - Name of the subcommand. Will also accept an instance of ConsoleInputSubcommand
- array $options optional []
- 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
buildFromArray() public static ¶
buildFromArray( array $spec , boolean $defaultOptions true )
Build a parser from an array. Uses an array like
$spec = [ 'description' => 'text', 'epilog' => 'text', 'arguments' => [ // list of arguments compatible with addArguments. ], 'options' => [ // list of options compatible with addOptions ], 'subcommands' => [ // list of subcommands to add. ] ];
Parameters
- array $spec
- The spec to build the OptionParser with.
- boolean $defaultOptions optional true
- Whether you want the verbose and quiet options set.
Returns
command() public ¶
command( string|null $text null )
Gets or sets the command name for shell/task.
Deprecated
Parameters
- string|null $text optional null
- The text to set, or null if you want to read
Returns
Cake\Console\ConsoleOptionParser
$this If reading, the value of the command. If setting $this will be returned.
create() public static ¶
create( string|null $command , boolean $defaultOptions true )
Static factory method for creating new OptionParsers so you can chain methods off of them.
Parameters
- string|null $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
description() public ¶
description( string|array|null $text null )
Get or set the description text for shell/task.
Deprecated
Parameters
- string|array|null $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
Cake\Console\ConsoleOptionParser
$this If reading, the value of the description. If setting $this will be returned.
enableSubcommandSort() public ¶
enableSubcommandSort( boolean $value true )
Enables sorting of subcommands
Parameters
- boolean $value optional true
- Whether or not to sort subcommands
Returns
$this
epilog() public ¶
epilog( string|array|null $text null )
Gets or sets an epilog to the parser. The epilog is added to the end of the options and arguments listing when help is generated.
Deprecated
Parameters
- string|array|null $text optional null
Text when setting or null when reading. If an array the text will be imploded with "\n".
Returns
Cake\Console\ConsoleOptionParser
$this If reading, the value of the epilog. If setting $this will be returned.
findClosestItem() protected ¶
findClosestItem( string $needle , string[] $haystack )
Tries to guess the item name the user originally wanted using the some regex pattern and the levenshtein algorithm.
Parameters
- string $needle
- Unknown item (either a subcommand name or an option for instance) trying to be used.
- string[] $haystack
- List of items available for the type $needle belongs to.
Returns
The closest name to the item submitted by the user.
getCommand() public ¶
getCommand( )
Gets the command name for shell/task.
Returns
The value of the command.
getCommandError() protected ¶
getCommandError( string $command )
Get the message output in the console stating that the command can not be found and tries to guess what the user wanted to say. Output a list of available subcommands as well.
Parameters
- string $command
- Unknown command name trying to be dispatched.
Returns
The message to be displayed in the console.
getDescription() public ¶
getDescription( )
Gets the description text for shell/task.
Returns
The value of the description
getOptionError() protected ¶
getOptionError( string $option )
Get the message output in the console stating that the option can not be found and tries to guess what the user wanted to say. Output a list of available options as well.
Parameters
- string $option
- Unknown option name trying to be used.
Returns
The message to be displayed in the console.
getShortOptionError() protected ¶
getShortOptionError( string $option )
Get the message output in the console stating that the short option can not be found. Output a list of available short options and what option they refer to as well.
Parameters
- string $option
- Unknown short option name trying to be used.
Returns
The message to be displayed in the console.
help() public ¶
help( string|null $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|null $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
Generated help.
isSubcommandSortEnabled() public ¶
isSubcommandSortEnabled( )
Checks whether or not sorting is enabled for subcommands.
Returns
merge() public ¶
merge( array|Cake\Console\ConsoleOptionParser
$spec )
Get or set the command name for shell/task.
Parameters
-
array|
Cake\Console\ConsoleOptionParser
$spec - ConsoleOptionParser or spec to merge with.
Returns
$this
parse() public ¶
parse( array $argv )
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 $argv
- Array of args (argv) to parse.
Returns
[$params, $args]
Throws
removeOption() public ¶
removeOption( string $name )
Remove an option from the option parser.
Parameters
- string $name
- The option name to remove.
Returns
$this
removeSubcommand() public ¶
removeSubcommand( string $name )
Remove a subcommand from the option parser.
Parameters
- string $name
- The subcommand name to remove.
Returns
$this
setCommand() public ¶
setCommand( string $text )
Sets the command name for shell/task.
Parameters
- string $text
- The text to set.
Returns
$this
setDescription() public ¶
setDescription( string|array $text )
Sets the description text for shell/task.
Parameters
- string|array $text
The text to set. If an array the text will be imploded with "\n".
Returns
$this
setEpilog() public ¶
setEpilog( string|array $text )
Sets 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
The text to set. If an array the text will be imploded with "\n".
Returns
$this
setHelpAlias() public ¶
setHelpAlias( string $alias )
Set the alias used in the HelpFormatter
Deprecated
Parameters
- string $alias
- The alias
setRootName() public ¶
setRootName( string $name )
Set the root name used in the HelpFormatter
Parameters
- string $name
- The root command name
Returns
$this
Properties detail
$_args ¶
Cake\Console\ConsoleInputArgument[]
Positional argument definitions.
See
[]
$_description ¶
Description text - displays before options when help is generated
See
$_epilog ¶
Epilog text - displays after options when help is generated
See
$_options ¶
Cake\Console\ConsoleInputOption[]
Option definitions.
See
[]
$_subcommands ¶
Cake\Console\ConsoleInputSubcommand[]
Subcommands for this Shell.
See
[]