[英]Namespacing thor commands in a standalone ruby executable
When calling thor commands on the command line, the methods are namespaced by their module/class structure, eg 在命令行上调用thor命令时,这些方法按其模块/类结构命名,例如
class App < Thor
desc 'hello', 'prints hello'
def hello
puts 'hello'
end
end
would be run with the command 将使用该命令运行
thor app:hello
However, if you make that self executable by putting 但是,如果你通过推杆使自己可执行
App.start
at the bottom you can run the command like: 在底部你可以运行如下命令:
app hello
Is there any way to namespace those commands? 有没有办法命名这些命令? So that you could call, for example 例如,你可以打电话
app say:hello
app say:goodbye
Another way of doing this is to use register: 另一种方法是使用寄存器:
class CLI < Thor
register(SubTask, 'sub', 'sub <command>', 'Description.')
end
class SubTask < Thor
desc "bar", "..."
def bar()
# ...
end
end
CLI.start
Now - assuming your executable is called foo - you can call: 现在 - 假设您的可执行文件名为foo - 您可以调用:
$ foo sub bar
In the current thor version (0.15.0.rc2) there is a bug though, which causes the help texts to skip the namespace of sub commands: 在当前的thor版本(0.15.0.rc2)中存在一个错误,导致帮助文本跳过子命令的命名空间:
$ foo sub
Tasks:
foo help [COMMAND] # Describe subcommands or one specific subcommand
foo bar #
You can fix that by overriding self.banner and explicitly setting the namespace. 您可以通过重写self.banner并显式设置命名空间来解决此问题。
class SubTask < Thor
namespace :sub
def bar ...
def self.banner(task, namespace = true, subcommand = false)
"#{basename} #{task.formatted_usage(self, true, subcommand)}"
end
end
The second parameter of formatted_usage is the only difference to the original implemtation of banner. formatted_usage的第二个参数是banner原始实现的唯一区别。 You can also do this once and have other sub command thor classes inherit from SubTask. 您也可以执行此操作,并从SubTask继承其他子命令Thor类。 Now you get: 现在你得到:
$ foo sub
Tasks:
foo sub help [COMMAND] # Describe subcommands or one specific subcommand
foo sub bar #
Hope that helps. 希望有所帮助。
This is one way with App as the default namespace (quite hacky though): 这是App作为默认命名空间的一种方式(虽然非常hacky):
#!/usr/bin/env ruby
require "rubygems"
require "thor"
class Say < Thor
# ./app say:hello
desc 'hello', 'prints hello'
def hello
puts 'hello'
end
end
class App < Thor
# ./app nothing
desc 'nothing', 'does nothing'
def nothing
puts 'doing nothing'
end
end
begin
parts = ARGV[0].split(':')
namespace = Kernel.const_get(parts[0].capitalize)
parts.shift
ARGV[0] = parts.join
namespace.start
rescue
App.start
end
Or, also not ideal: 或者,也不理想:
define_method 'say:hello'
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