NAME¶
App::Cmd::Command - a base class for App::Cmd commands
VERSION¶
version 0.318
METHODS¶
prepare¶
my ($cmd, $opt, $args) = $class->prepare($app, @args);
This method is the primary way in which App::Cmd::Command objects are built.
Given the remaining command line arguments meant for the command, it returns
the Command object, parsed options (as a hashref), and remaining arguments (as
an arrayref).
In the usage above, $app is the App::Cmd object that is invoking the command.
new¶
This returns a new instance of the command plugin. Probably only
"prepare" should use this.
execute¶
$command_plugin->execute(\%opt, \@args);
This method does whatever it is the command should do! It is passed a hash
reference of the parsed command-line options and an array reference of left
over arguments.
If no "execute" method is defined, it will try to call "run"
-- but it will warn about this behavior during testing, to remind you to fix
the method name!
app¶
This method returns the App::Cmd object into which this command is plugged.
usage¶
This method returns the usage object for this command. (See
Getopt::Long::Descriptive).
command_names¶
This method returns a list of command names handled by this plugin. The first
item returned is the 'canonical' name of the command.
If this method is not overridden by an App::Cmd::Command subclass, it will
return the last part of the plugin's package name, converted to lowercase. For
example, YourApp::Cmd::Command::Init will, by default, handle the command
"init".
Subclasses should generally get the superclass value of
"command_names" and then append aliases.
usage_desc¶
This method should be overridden to provide a usage string. (This is the first
argument passed to "describe_options" from
Getopt::Long::Descriptive.)
If not overridden, it returns "%c COMMAND %o"; COMMAND is the first
item in the result of the "command_names" method.
opt_spec¶
This method should be overridden to provide option specifications. (This is list
of arguments passed to "describe_options" from
Getopt::Long::Descriptive, after the first.)
If not overridden, it returns an empty list.
validate_args¶
$command_plugin->validate_args(\%opt, \@args);
This method is passed a hashref of command line options (as processed by
Getopt::Long::Descriptive) and an arrayref of leftover arguments. It may throw
an exception (preferably by calling "usage_error", below) if they
are invalid, or it may do nothing to allow processing to continue.
usage_error¶
$self->usage_error("This command must not be run by root!");
This method should be called to die with human-friendly usage output, during
"validate_args".
abstract¶
This method returns a short description of the command's purpose. If this method
is not overridden, it will return the abstract from the module's Pod. If it
can't find the abstract, it will look for a comment starting with
"ABSTRACT:" like the ones used by Pod::Weaver::Section::Name.
description¶
This method should be overridden to provide full option description. It is used
by the built-in App::Cmd::Command::help command.
If not overridden, it returns an empty string.
AUTHOR¶
Ricardo Signes <rjbs@cpan.org>
COPYRIGHT AND LICENSE¶
This software is copyright (c) 2012 by Ricardo Signes.
This is free software; you can redistribute it and/or modify it under the same
terms as the Perl 5 programming language system itself.