class Bundler::UI::Shell

# File lib/bundler/ui/shell.rb, line 12
def initialize(options = {})
  if options["no-color"] || !$stdout.tty?
    Thor::Base.shell = Thor::Shell::Basic
  end
  @shell = Thor::Base.shell.new
  @level = ENV["DEBUG"] ? "debug" : "info"
  @warning_history = []
end

# File lib/bundler/ui/shell.rb, line 21
def add_color(string, *color)
  @shell.set_color(string, *color)
end

# File lib/bundler/ui/shell.rb, line 60
def ask(msg)
  @shell.ask(msg)
end

# File lib/bundler/ui/shell.rb, line 29
def confirm(msg, newline = nil)
  tell_me(msg, :green, newline) if level("confirm")
end

# File lib/bundler/ui/shell.rb, line 48
def debug(msg, newline = nil)
  tell_me(msg, nil, newline) if debug?
end

# File lib/bundler/ui/shell.rb, line 52
def debug?
  level("debug")
end

# File lib/bundler/ui/shell.rb, line 42
def error(msg, newline = nil)
  return unless level("error")
  return tell_err(msg, :red, newline) if Bundler.feature_flag.error_on_stderr?
  tell_me(msg, :red, newline)
end

# File lib/bundler/ui/shell.rb, line 25
def info(msg, newline = nil)
  tell_me(msg, nil, newline) if level("info")
end

# File lib/bundler/ui/shell.rb, line 77
def level(name = nil)
  return @level unless name
  unless index = LEVELS.index(name)
    raise "#{name.inspect} is not a valid level"
  end
  index <= LEVELS.index(@level)
end

# File lib/bundler/ui/shell.rb, line 72
def level=(level)
  raise ArgumentError unless LEVELS.include?(level.to_s)
  @level = level.to_s
end

# File lib/bundler/ui/shell.rb, line 68
def no?
  @shell.no?(msg)
end

# File lib/bundler/ui/shell.rb, line 56
def quiet?
  level("quiet")
end

# File lib/bundler/ui/shell.rb, line 91
def silence(&blk)
  with_level("silent", &blk)
end

# File lib/bundler/ui/shell.rb, line 85
def trace(e, newline = nil, force = false)
  return unless debug? || force
  msg = "#{e.class}: #{e.message}\n#{e.backtrace.join("\n  ")}"
  tell_me(msg, nil, newline)
end

# File lib/bundler/ui/shell.rb, line 95
def unprinted_warnings
  []
end

# File lib/bundler/ui/shell.rb, line 33
def warn(msg, newline = nil)
  return unless level("warn")
  return if @warning_history.include? msg
  @warning_history << msg

  return tell_err(msg, :yellow, newline) if Bundler.feature_flag.error_on_stderr?
  tell_me(msg, :yellow, newline)
end

# File lib/bundler/ui/shell.rb, line 64
def yes?(msg)
  @shell.yes?(msg)
end

# File lib/bundler/ui/shell.rb, line 126
def strip_leading_spaces(text)
  spaces = text[/\A\s+/, 0]
  spaces ? text.gsub(/#{spaces}/, "") : text
end

# File lib/bundler/ui/shell.rb, line 111
def tell_err(message, color = nil, newline = nil)
  return if @shell.send(:stderr).closed?

  newline ||= message.to_s !~ /( |\t)\Z/
  message = word_wrap(message) if newline.is_a?(Hash) && newline[:wrap]

  color = nil if color && !$stderr.tty?

  buffer = @shell.send(:prepare_message, message, *color)
  buffer << "\n" if newline && !message.to_s.end_with?("\n")

  @shell.send(:stderr).print(buffer)
  @shell.send(:stderr).flush
end

# File lib/bundler/ui/shell.rb, line 102
def tell_me(msg, color = nil, newline = nil)
  msg = word_wrap(msg) if newline.is_a?(Hash) && newline[:wrap]
  if newline.nil?
    @shell.say(msg, color)
  else
    @shell.say(msg, color, newline)
  end
end

# File lib/bundler/ui/shell.rb, line 137
def with_level(level)
  original = @level
  @level = level
  yield
ensure
  @level = original
end

# File lib/bundler/ui/shell.rb, line 131
def word_wrap(text, line_width = @shell.terminal_width)
  strip_leading_spaces(text).split("\n").collect do |line|
    line.length > line_width ? line.gsub(/(.{1,#{line_width}})(\s+|$)/, "\\1\n").strip : line
  end * "\n"
end