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Contents
# frozen_string_literal: true
require 'pp'
require 'English'
class Pry
# PP subclass for streaming inspect output in color.
class ColorPrinter < ::PP
Pry::SyntaxHighlighter.overwrite_coderay_comment_token!
def self.default(_output, value, pry_instance)
pry_instance.pager.open do |pager|
pager.print pry_instance.config.output_prefix
pp(value, pager, pry_instance.output.width - 1)
end
end
def self.pp(obj, output = $DEFAULT_OUTPUT, max_width = 79)
queue = ColorPrinter.new(output, max_width, "\n")
queue.guard_inspect_key { queue.pp(obj) }
queue.flush
output << "\n"
end
def pp(object)
return super unless object.is_a?(String)
# Avoid calling Ruby 2.4+ String#pretty_print that prints multiline
# Strings prettier
text(object.inspect)
rescue StandardError => exception
raise if exception.is_a?(Pry::Pager::StopPaging)
text(highlight_object_literal(inspect_object(object)))
end
def text(str, max_width = str.length)
if str.include?("\e[")
super("#{str}\e[0m", max_width)
elsif str.start_with?('#<') || %w[= >].include?(str)
super(highlight_object_literal(str), max_width)
else
super(SyntaxHighlighter.highlight(str), max_width)
end
end
private
def highlight_object_literal(object_literal)
code = Pry::SyntaxHighlighter.keyword_token_color
obj_color = code.start_with?("\e") ? code : "\e[0m\e[0;#{code}m"
"#{obj_color}#{object_literal}\e[0m"
end
def inspect_object(object)
object.inspect
rescue StandardError
# Read the class name off of the singleton class to provide a default
# inspect.
singleton = class << object; self; end
ancestors = Pry::Method.safe_send(singleton, :ancestors)
klass = ancestors.find { |k| k != singleton }
"#<#{klass}:0x#{object.__id__.to_s(16)}>"
end
end
end
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