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class Pry
# The Pry config.
# @api public
class Config < Pry::BasicObject
include Behavior
# @return [Pry::Config]
# An object who implements the default configuration for all
# Pry sessions.
# rubocop:disable Metrics/AbcSize
def self.defaults
defaults = from_hash(
input: Pry.lazy { lazy_readline(defaults) },
output: $stdout.tap { |out| out.sync = true },
commands: Pry::Commands,
prompt_name: Pry::Prompt::DEFAULT_NAME,
prompt: Pry::Prompt[:default],
prompt_safe_contexts: Pry::Prompt::SAFE_CONTEXTS,
print: proc do |_output, value, pry_instance|
pry_instance.pager.open do |pager|
pager.print pry_instance.config.output_prefix
Pry::ColorPrinter.pp(value, pager, Pry::Terminal.width! - 1)
end
end,
quiet: false,
# Will only show the first line of the backtrace
exception_handler: proc do |output, exception, _|
if exception.is_a?(UserError) && exception.is_a?(SyntaxError)
output.puts "SyntaxError: #{exception.message.sub(/.*syntax error, */m, '')}"
else
output.puts "#{exception.class}: #{exception.message}"
output.puts "from #{exception.backtrace.first}"
if exception.respond_to? :cause
cause = exception.cause
while cause
output.puts "Caused by #{cause.class}: #{cause}\n"
output.puts "from #{cause.backtrace.first}"
cause = cause.cause
end
end
end
end,
unrescued_exceptions: [
::SystemExit, ::SignalException, Pry::TooSafeException
],
exception_whitelist: Pry.lazy do
defaults.output.puts(
'[warning] Pry.config.exception_whitelist is deprecated, ' \
'please use Pry.config.unrescued_exceptions instead.'
)
[::SystemExit, ::SignalException, Pry::TooSafeException]
end,
# The default hooks - display messages when beginning and ending Pry
# sessions.
hooks: Pry::Hooks.new.add_hook(
:before_session, :default
) do |_out, _target, pry_instance|
next if pry_instance.quiet?
pry_instance.run_command('whereami --quiet')
end,
pager: true,
system: proc do |output, cmd, _|
next if system(cmd)
output.puts 'Error: there was a problem executing system ' \
"command: #{cmd}"
end,
color: Pry::Helpers::BaseHelpers.use_ansi_codes?,
default_window_size: 5,
editor: Pry.default_editor_for_platform,
should_load_rc: true,
should_load_local_rc: true,
should_trap_interrupts: Pry::Helpers::Platform.jruby?,
disable_auto_reload: false,
command_prefix: "",
auto_indent: Pry::Helpers::BaseHelpers.use_ansi_codes?,
correct_indent: true,
collision_warning: false,
output_prefix: "=> ",
requires: [],
should_load_requires: true,
should_load_plugins: true,
windows_console_warning: true,
# Deal with the ^D key being pressed. Different behaviour in different
# cases:
# 1. In an expression behave like `!` command.
# 2. At top-level session behave like `exit` command.
# 3. In a nested session behave like `cd ..`.
control_d_handler: proc do |eval_string, pry_instance|
if !eval_string.empty?
eval_string.replace('') # Clear input buffer.
elsif pry_instance.binding_stack.one?
pry_instance.binding_stack.clear
throw(:breakout)
else
# Otherwise, saves current binding stack as old stack and pops last
# binding out of binding stack (the old stack still has that binding).
pry_instance.command_state["cd"] ||= Pry::Config.from_hash({})
pry_instance.command_state['cd'].old_stack = pry_instance.binding_stack.dup
pry_instance.binding_stack.pop
end
end,
memory_size: 100,
extra_sticky_locals: {},
command_completions: proc { defaults.commands.keys },
file_completions: proc { Dir["."] },
ls: Pry::Config.from_hash(Pry::Command::Ls::DEFAULT_OPTIONS),
completer: Pry::InputCompleter,
history: Pry::Config.from_hash(
should_save: true, should_load: true
).tap do |history|
history_file =
if File.exist?(File.expand_path('~/.pry_history'))
'~/.pry_history'
elsif ENV.key?('XDG_DATA_HOME') && ENV['XDG_DATA_HOME'] != ''
# See XDG Base Directory Specification at
# https://standards.freedesktop.org/basedir-spec/basedir-spec-0.8.html
ENV['XDG_DATA_HOME'] + '/pry/pry_history'
else
'~/.local/share/pry/pry_history'
end
history.file = File.expand_path(history_file)
end,
exec_string: ""
)
end
# rubocop:enable Metrics/AbcSize
def self.shortcuts
Convenience::SHORTCUTS
end
# @api private
def self.lazy_readline(defaults)
require 'readline'
::Readline
rescue LoadError
defaults.output.puts(
"Sorry, you can't use Pry without Readline or a compatible library. \n" \
"Possible solutions: \n" \
" * Rebuild Ruby with Readline support using `--with-readline` \n" \
" * Use the rb-readline gem, which is a pure-Ruby port of Readline \n" \
" * Use the pry-coolline gem, a pure-ruby alternative to Readline"
)
raise
end
private_class_method :lazy_readline
end
end
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