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ebccd57013
John "banister" Mair describes the following key features of commands
as classes:
1. It enables people to extend them by either subclassing or
monkeypatching.
2. It enables them to provide their own API, so that for example, the
Pry::Command::Edit class could have class methods for people to
configure it.
Please, note that I didn't touch easter eggs commands. I also prettified
some strings (your source code reading experience should vastly improve!).
Signed-off-by: Kyrylo Silin <kyrylosilin@gmail.com>
51 lines
1.5 KiB
Ruby
51 lines
1.5 KiB
Ruby
class Pry
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class Command::InstallCommand < Pry::ClassCommand
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match 'install-command'
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group 'Commands'
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description 'Install a disabled command.'
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banner <<-BANNER
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Usage: install-command COMMAND
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Installs the gems necessary to run the given COMMAND. You will generally not
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need to run this unless told to by an error message.
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BANNER
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def process(name)
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require 'rubygems/dependency_installer' unless defined? Gem::DependencyInstaller
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command = find_command(name)
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if command_dependencies_met?(command.options)
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output.puts "Dependencies for #{command.name} are met. Nothing to do."
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return
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end
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output.puts "Attempting to install `#{name}` command..."
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gems_to_install = Array(command.options[:requires_gem])
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gems_to_install.each do |g|
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next if gem_installed?(g)
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output.puts "Installing `#{g}` gem..."
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begin
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Gem::DependencyInstaller.new.install(g)
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rescue Gem::GemNotFoundException
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raise CommandError, "Required Gem: `#{g}` not found. Aborting command installation."
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end
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end
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Gem.refresh
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gems_to_install.each do |g|
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begin
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require g
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rescue LoadError
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raise CommandError, "Required Gem: `#{g}` installed but not found?!. Aborting command installation."
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end
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end
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output.puts "Installation of `#{name}` successful! Type `help #{name}` for information"
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end
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end
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Pry::Commands.add_command(Pry::Command::InstallCommand)
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end
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