All Components → zendframework/zend-console → Class Getopt

Class Getopt

Summary

Fully Qualified Name:

Zend\Console\Getopt

Description

Getopt is a class to parse options for command-line applications.

Terminology: Argument: an element of the argv array. This may be part of an option, or it may be a non-option command-line argument. Flag: the letter or word set off by a '-' or '--'. Example: in '--output filename', '--output' is the flag. Parameter: the additional argument that is associated with the option. Example: in '--output filename', the 'filename' is the parameter. Option: the combination of a flag and its parameter, if any. Example: in '--output filename', the whole thing is the option.

The following features are supported:

Short flags like '-a'. Short flags are preceded by a single dash. Short flags may be clustered e.g. '-abc', which is the same as '-a' '-b' '-c'.
Long flags like '--verbose'. Long flags are preceded by a double dash. Long flags may not be clustered.
Options may have a parameter, e.g. '--output filename'.
Parameters for long flags may also be set off with an equals sign, e.g. '--output=filename'.
Parameters for long flags may be checked as string, word, or integer.
Automatic generation of a helpful usage message.
Signal end of options with '--'; subsequent arguments are treated as non-option arguments, even if they begin with '-'.
Raise exception Zend\Console\Exception* in several cases when invalid flags or parameters are given. Usage message is returned in the exception object.

The format for specifying options uses a PHP associative array. The key is has the format of a list of pipe-separated flag names, followed by an optional '=' to indicate a required parameter or '-' to indicate an optional parameter. Following that, the type of parameter may be specified as 's' for string, 'w' for word, or 'i' for integer.

Examples:

'user|username|u=s' this means '--user' or '--username' or '-u' are synonyms, and the option requires a string parameter.
'p=i' this means '-p' requires an integer parameter. No synonyms.
'verbose|v-i' this means '--verbose' or '-v' are synonyms, and they take an optional integer parameter.
'help|h' this means '--help' or '-h' are synonyms, and they take no parameter.

The values in the associative array are strings that are used as brief descriptions of the options when printing a usage message.

The simpler format for specifying options used by PHP's getopt() function is also supported. This is similar to GNU getopt and shell getopt format.

Example: 'abc:' means options '-a', '-b', and '-c' are legal, and the latter requires a string parameter.

Methods

Name	Description	Defined By
__construct()	The constructor takes one to three parameters.	Getopt
__get()	Return the state of the option seen on the command line of the current application invocation. This function returns true, or the parameter to the option, if any. If the option was not given, this function returns null.	Getopt
__isset()	Test whether a given option has been seen.	Getopt
__set()	Set the value for a given option.	Getopt
__toString()	Return the current set of options and parameters seen as a string.	Getopt
__unset()	Unset an option.	Getopt
addArguments()	Define additional command-line arguments.	Getopt
addRules()	Define additional option rules.	Getopt
getArguments()		Getopt
getOption()	Return the state of the option seen on the command line of the current application invocation.	Getopt
getOptions()	Return a list of options that have been seen in the current argv.	Getopt
getRemainingArgs()	Return the arguments from the command-line following all options found.	Getopt
getUsageMessage()	Return a useful option reference, formatted for display in an error message.	Getopt
parse()	Parse command-line arguments and find both long and short options.	Getopt
setAliases()	Define aliases for options.	Getopt
setArguments()	Define full set of command-line arguments.	Getopt
setHelp()	Define help messages for options.	Getopt
setOption()	Define one configuration option as a key/value pair.	Getopt
setOptionCallback()		Getopt
setOptions()	Define multiple configuration options from an associative array.	Getopt
toArray()	Return the current set of options and parameters seen as an array of canonical options and parameters.	Getopt
toJson()	Return the current set of options and parameters seen in Json format.	Getopt
toString()	Return the current set of options and parameters seen as a string.	Getopt
toXml()	Return the current set of options and parameters seen in XML format.	Getopt

Method Details

__construct()

The constructor takes one to three parameters.

The first parameter is $rules, which may be a string for gnu-style format, or a structured array for Zend-style format.

The second parameter is $argv, and it is optional. If not specified, $argv is inferred from the global argv.

The third parameter is an array of configuration parameters to control the behavior of this instance of Getopt; it is optional.

Parameter Name	Type	Description
$rules	array
$argv	array
$getoptConfig	array

Returns:

__get()

Return the state of the option seen on the command line of the current application invocation. This function returns true, or the parameter to the option, if any. If the option was not given, this function returns null.

The magic __get method works in the context of naming the option as a virtual member of this class.

Parameter Name	Type	Description
$key	string

Returns: string

__isset()

Test whether a given option has been seen.

Parameter Name	Type	Description
$key	string

Returns: bool

__set()

Set the value for a given option.

Parameter Name	Type	Description
$key	string
$value	string

Returns:

__toString()

Return the current set of options and parameters seen as a string.

Returns: string

__unset()

Unset an option.

Parameter Name	Type	Description
$key	string

Returns:

addArguments()

Define additional command-line arguments.

These are appended to those defined when the constructor was called.

Parameter Name	Type	Description
$argv	array

Returns: self

addRules()

Define additional option rules.

These are appended to the rules defined when the constructor was called.

Parameter Name	Type	Description
$rules	array

Returns: self

getArguments()

Returns: void

getOption()

Return the state of the option seen on the command line of the current application invocation.

This function returns true, or the parameter value to the option, if any. If the option was not given, this function returns false.

Parameter Name	Type	Description
$flag	string

Returns: mixed

getOptions()

Return a list of options that have been seen in the current argv.

Returns: array

getRemainingArgs()

Return the arguments from the command-line following all options found.

Returns: array

getUsageMessage()

Return a useful option reference, formatted for display in an error message.

Note that this usage information is provided in most Exceptions generated by this class.

Returns: string

parse()

Parse command-line arguments and find both long and short options.

Also find option parameters, and remaining arguments after all options have been parsed.

Returns: self

setAliases()

Define aliases for options.

The parameter $aliasMap is an associative array mapping option name (short or long) to an alias.

Parameter Name	Type	Description
$aliasMap	array

Returns: self

setArguments()

Define full set of command-line arguments.

These replace any currently defined.

Parameter Name	Type	Description
$argv	array

Returns: self

setHelp()

Define help messages for options.

The parameter $helpMap is an associative array mapping option name (short or long) to the help string.

Parameter Name	Type	Description
$helpMap	array

Returns: self

setOption()

Define one configuration option as a key/value pair.

These are not program options, but properties to configure the behavior of Zend\Console\Getopt.

Parameter Name	Type	Description
$configKey	string
$configValue	string

Returns: self

setOptionCallback()

Parameter Name	Type	Description
$option	string	The
$callback	callable	The

Returns: self

setOptions()

Define multiple configuration options from an associative array.

These are not program options, but properties to configure the behavior of Zend\Console\Getopt.

Parameter Name	Type	Description
$getoptConfig	array

Returns: self

toArray()

Return the current set of options and parameters seen as an array of canonical options and parameters.

Clusters have been expanded, and option aliases have been mapped to their primary option names.

Returns: array

toJson()

Return the current set of options and parameters seen in Json format.

Returns: string

toString()

Return the current set of options and parameters seen as a string.

Returns: string

toXml()

Return the current set of options and parameters seen in XML format.

Returns: string