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class Pry
# Manage the processing of command line options
class CLI
NoOptionsError = Class.new(StandardError)
class << self
# @return [Proc] The Proc defining the valid command line options.
attr_accessor :options
# @return [Array] The Procs that process the parsed options. Plugins can
# utilize this facility in order to add and process their own Pry
# options.
attr_accessor :option_processors
# @return [Array<String>] The input array of strings to process
# as CLI options.
attr_accessor :input_args
# Add another set of CLI options (a Pry::Slop block)
def add_options(&block)
if options
old_options = options
self.options = proc do
instance_exec(&old_options)
instance_exec(&block)
end
else
self.options = block
end
self
end
# Bring in options defined in plugins
def add_plugin_options
Pry.plugins.values.each do |plugin|
plugin.load_cli_options
end
self
end
# Add a block responsible for processing parsed options.
def add_option_processor(&block)
self.option_processors ||= []
option_processors << block
self
end
# Clear `options` and `option_processors`
def reset
self.options = nil
self.option_processors = nil
end
def parse_options(args=ARGV)
unless options
raise NoOptionsError, "No command line options defined! Use Pry::CLI.add_options to add command line options."
end
# Load config files etc first, ensuring that cli options will take precedence.
Pry.initial_session_setup
self.input_args = args
begin
opts = Pry::Slop.parse!(
args,
:help => true,
:multiple_switches => false,
:strict => true,
&options
)
rescue Pry::Slop::InvalidOptionError
# Display help message on unknown switches and exit.
puts Pry::Slop.new(&options)
exit
end
Pry.final_session_setup
# Option processors are optional.
if option_processors
option_processors.each { |processor| processor.call(opts) }
end
opts
end
def start(opts)
exit if opts.help?
# invoked via cli
Pry.cli = true
# create the actual context
if opts[:context]
Pry.initial_session_setup
context = Pry.binding_for(eval(opts[:context]))
Pry.final_session_setup
else
context = Pry.toplevel_binding
end
if Pry::CLI.input_args.any? && Pry::CLI.input_args != ["pry"]
full_name = File.expand_path(Pry::CLI.input_args.first)
Pry.load_file_through_repl(full_name)
exit
end
# Start the session (running any code passed with -e, if there is any)
Pry.start(context, :input => StringIO.new(Pry.config.exec_string))
end
end
reset
end
end
# Bring in options defined by plugins
Pry::Slop.new do
on "no-plugins" do
Pry.config.should_load_plugins = false
end
end.parse(ARGV.dup)
if Pry.config.should_load_plugins
Pry::CLI.add_plugin_options
end
# The default Pry command line options (before plugin options are included)
Pry::CLI.add_options do
banner %{Usage: pry [OPTIONS]
Start a Pry session.
See http://pryrepl.org/ for more information.
Copyright (c) 2016 John Mair (banisterfiend)
--
}
on :e, :exec=, "A line of code to execute in context before the session starts" do |input|
Pry.config.exec_string += "\n" if Pry.config.exec_string.length > 0
Pry.config.exec_string += input
end
on "no-pager", "Disable pager for long output" do
Pry.config.pager = false
end
on "no-history", "Disable history loading" do
Pry.config.history.should_load = false
end
on "no-color", "Disable syntax highlighting for session" do
Pry.config.color = false
end
on :f, "Suppress loading of ~/.pryrc and ./.pryrc" do
Pry.config.should_load_rc = false
Pry.config.should_load_local_rc = false
end
on :s, "select-plugin=", "Only load specified plugin (and no others)." do |plugin_name|
Pry.config.should_load_plugins = false
Pry.plugins[plugin_name].activate!
end
on :d, "disable-plugin=", "Disable a specific plugin." do |plugin_name|
Pry.plugins[plugin_name].disable!
end
on "no-plugins", "Suppress loading of plugins." do
Pry.config.should_load_plugins = false
end
on "plugins", "List installed plugins." do
puts "Installed Plugins:"
puts "--"
Pry.locate_plugins.each do |plugin|
puts "#{plugin.name}".ljust(18) << plugin.spec.summary
end
exit
end
on "simple-prompt", "Enable simple prompt mode" do
Pry.config.prompt = Pry::SIMPLE_PROMPT
end
on "noprompt", "No prompt mode" do
Pry.config.prompt = Pry::NO_PROMPT
end
on :r, :require=, "`require` a Ruby script at startup" do |file|
Pry.config.requires << file
end
on :I=, "Add a path to the $LOAD_PATH", :as => Array, :delimiter => ":" do |load_path|
load_path.map! do |path|
/\A\.\// =~ path ? path : File.expand_path(path)
end
$LOAD_PATH.unshift(*load_path)
end
on "gem", "Shorthand for -I./lib -rgemname" do |load_path|
$LOAD_PATH.unshift("./lib")
Dir["./lib/*.rb"].each do |file|
Pry.config.requires << file
end
end
on :v, :version, "Display the Pry version" do
puts "Pry version #{Pry::VERSION} on Ruby #{RUBY_VERSION}"
exit
end
on(:c, :context=,
"Start the session in the specified context. Equivalent to `context.pry` in a session.",
:default => "Pry.toplevel_binding"
)
end