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opt / alt / ruby27 / share / gems / gems / bundler-2.2.24 / lib / bundler / vendor / thor / lib / thor / shell /

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📄 basic.rb(14.43 KB)
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Editing: basic.rb

class Bundler::Thor
  module Shell
    class Basic
      DEFAULT_TERMINAL_WIDTH = 80

attr_accessor :base
      attr_reader   :padding

# Initialize base, mute and padding to nil.
      #
      def initialize #:nodoc:
        @base = nil
        @mute = false
        @padding = 0
        @always_force = false
      end

# Mute everything that's inside given block
      #
      def mute
        @mute = true
        yield
      ensure
        @mute = false
      end

# Check if base is muted
      #
      def mute?
        @mute
      end

# Sets the output padding, not allowing less than zero values.
      #
      def padding=(value)
        @padding = [0, value].max
      end

# Sets the output padding while executing a block and resets it.
      #
      def indent(count = 1)
        orig_padding = padding
        self.padding = padding + count
        yield
        self.padding = orig_padding
      end

# Asks something to the user and receives a response.
      #
      # If a default value is specified it will be presented to the user
      # and allows them to select that value with an empty response. This
      # option is ignored when limited answers are supplied.
      #
      # If asked to limit the correct responses, you can pass in an
      # array of acceptable answers.  If one of those is not supplied,
      # they will be shown a message stating that one of those answers
      # must be given and re-asked the question.
      #
      # If asking for sensitive information, the :echo option can be set
      # to false to mask user input from $stdin.
      #
      # If the required input is a path, then set the path option to
      # true. This will enable tab completion for file paths relative
      # to the current working directory on systems that support
      # Readline.
      #
      # ==== Example
      # ask("What is your name?")
      #
      # ask("What is the planet furthest from the sun?", :default => "Pluto")
      #
      # ask("What is your favorite Neopolitan flavor?", :limited_to => ["strawberry", "chocolate", "vanilla"])
      #
      # ask("What is your password?", :echo => false)
      #
      # ask("Where should the file be saved?", :path => true)
      #
      def ask(statement, *args)
        options = args.last.is_a?(Hash) ? args.pop : {}
        color = args.first

if options[:limited_to]
          ask_filtered(statement, color, options)
        else
          ask_simply(statement, color, options)
        end
      end

# Say (print) something to the user. If the sentence ends with a whitespace
      # or tab character, a new line is not appended (print + flush). Otherwise
      # are passed straight to puts (behavior got from Highline).
      #
      # ==== Example
      # say("I know you knew that.")
      #
      def say(message = "", color = nil, force_new_line = (message.to_s !~ /( |\t)\Z/))
        return if quiet?

buffer = prepare_message(message, *color)
        buffer << "\n" if force_new_line && !message.to_s.end_with?("\n")

stdout.print(buffer)
        stdout.flush
      end

# Say a status with the given color and appends the message. Since this
      # method is used frequently by actions, it allows nil or false to be given
      # in log_status, avoiding the message from being shown. If a Symbol is
      # given in log_status, it's used as the color.
      #
      def say_status(status, message, log_status = true)
        return if quiet? || log_status == false
        spaces = "  " * (padding + 1)
        color  = log_status.is_a?(Symbol) ? log_status : :green

status = status.to_s.rjust(12)
        status = set_color status, color, true if color

buffer = "#{status}#{spaces}#{message}"
        buffer = "#{buffer}\n" unless buffer.end_with?("\n")

stdout.print(buffer)
        stdout.flush
      end

# Make a question the to user and returns true if the user replies "y" or
      # "yes".
      #
      def yes?(statement, color = nil)
        !!(ask(statement, color, :add_to_history => false) =~ is?(:yes))
      end

# Make a question the to user and returns true if the user replies "n" or
      # "no".
      #
      def no?(statement, color = nil)
        !!(ask(statement, color, :add_to_history => false) =~ is?(:no))
      end

# Prints values in columns
      #
      # ==== Parameters
      # Array[String, String, ...]
      #
      def print_in_columns(array)
        return if array.empty?
        colwidth = (array.map { |el| el.to_s.size }.max || 0) + 2
        array.each_with_index do |value, index|
          # Don't output trailing spaces when printing the last column
          if ((((index + 1) % (terminal_width / colwidth))).zero? && !index.zero?) || index + 1 == array.length
            stdout.puts value
          else
            stdout.printf("%-#{colwidth}s", value)
          end
        end
      end

# Prints a table.
      #
      # ==== Parameters
      # Array[Array[String, String, ...]]
      #
      # ==== Options
      # indent<Integer>:: Indent the first column by indent value.
      # colwidth<Integer>:: Force the first column to colwidth spaces wide.
      #
      def print_table(array, options = {}) # rubocop:disable MethodLength
        return if array.empty?

formats = []
        indent = options[:indent].to_i
        colwidth = options[:colwidth]
        options[:truncate] = terminal_width if options[:truncate] == true

formats << "%-#{colwidth + 2}s".dup if colwidth
        start = colwidth ? 1 : 0

colcount = array.max { |a, b| a.size <=> b.size }.size

maximas = []

start.upto(colcount - 1) do |index|
          maxima = array.map { |row| row[index] ? row[index].to_s.size : 0 }.max
          maximas << maxima
          formats << if index == colcount - 1
                       # Don't output 2 trailing spaces when printing the last column
                       "%-s".dup
                     else
                       "%-#{maxima + 2}s".dup
                     end
        end

formats[0] = formats[0].insert(0, " " * indent)
        formats << "%s"

array.each do |row|
          sentence = "".dup

row.each_with_index do |column, index|
            maxima = maximas[index]

f = if column.is_a?(Numeric)
              if index == row.size - 1
                # Don't output 2 trailing spaces when printing the last column
                "%#{maxima}s"
              else
                "%#{maxima}s  "
              end
            else
              formats[index]
            end
            sentence << f % column.to_s
          end

sentence = truncate(sentence, options[:truncate]) if options[:truncate]
          stdout.puts sentence
        end
      end

# Prints a long string, word-wrapping the text to the current width of the
      # terminal display. Ideal for printing heredocs.
      #
      # ==== Parameters
      # String
      #
      # ==== Options
      # indent<Integer>:: Indent each line of the printed paragraph by indent value.
      #
      def print_wrapped(message, options = {})
        indent = options[:indent] || 0
        width = terminal_width - indent
        paras = message.split("\n\n")

paras.map! do |unwrapped|
          words = unwrapped.split(" ")
          counter = words.first.length
          words.inject do |memo, word|
            word = word.gsub(/\n\005/, "\n").gsub(/\005/, "\n")
            counter = 0 if word.include? "\n"
            if (counter + word.length + 1) < width
              memo = "#{memo} #{word}"
              counter += (word.length + 1)
            else
              memo = "#{memo}\n#{word}"
              counter = word.length
            end
            memo
          end
        end.compact!

paras.each do |para|
          para.split("\n").each do |line|
            stdout.puts line.insert(0, " " * indent)
          end
          stdout.puts unless para == paras.last
        end
      end

# Deals with file collision and returns true if the file should be
      # overwritten and false otherwise. If a block is given, it uses the block
      # response as the content for the diff.
      #
      # ==== Parameters
      # destination<String>:: the destination file to solve conflicts
      # block<Proc>:: an optional block that returns the value to be used in diff and merge
      #
      def file_collision(destination)
        return true if @always_force
        options = block_given? ? "[Ynaqdhm]" : "[Ynaqh]"

loop do
          answer = ask(
            %[Overwrite #{destination}? (enter "h" for help) #{options}],
            :add_to_history => false
          )

case answer
          when nil
            say ""
            return true
          when is?(:yes), is?(:force), ""
            return true
          when is?(:no), is?(:skip)
            return false
          when is?(:always)
            return @always_force = true
          when is?(:quit)
            say "Aborting..."
            raise SystemExit
          when is?(:diff)
            show_diff(destination, yield) if block_given?
            say "Retrying..."
          when is?(:merge)
            if block_given? && !merge_tool.empty?
              merge(destination, yield)
              return nil
            end

say "Please specify merge tool to `THOR_MERGE` env."
          else
            say file_collision_help
          end
        end
      end

# This code was copied from Rake, available under MIT-LICENSE
      # Copyright (c) 2003, 2004 Jim Weirich
      def terminal_width
        result = if ENV["THOR_COLUMNS"]
          ENV["THOR_COLUMNS"].to_i
        else
          unix? ? dynamic_width : DEFAULT_TERMINAL_WIDTH
        end
        result < 10 ? DEFAULT_TERMINAL_WIDTH : result
      rescue
        DEFAULT_TERMINAL_WIDTH
      end

# Called if something goes wrong during the execution. This is used by Bundler::Thor
      # internally and should not be used inside your scripts. If something went
      # wrong, you can always raise an exception. If you raise a Bundler::Thor::Error, it
      # will be rescued and wrapped in the method below.
      #
      def error(statement)
        stderr.puts statement
      end

# Apply color to the given string with optional bold. Disabled in the
      # Bundler::Thor::Shell::Basic class.
      #
      def set_color(string, *) #:nodoc:
        string
      end

protected

def prepare_message(message, *color)
        spaces = "  " * padding
        spaces + set_color(message.to_s, *color)
      end

def can_display_colors?
        false
      end

def lookup_color(color)
        return color unless color.is_a?(Symbol)
        self.class.const_get(color.to_s.upcase)
      end

def stdout
        $stdout
      end

def stderr
        $stderr
      end

def is?(value) #:nodoc:
        value = value.to_s

if value.size == 1
          /\A#{value}\z/i
        else
          /\A(#{value}|#{value[0, 1]})\z/i
        end
      end

def file_collision_help #:nodoc:
        <<-HELP
        Y - yes, overwrite
        n - no, do not overwrite
        a - all, overwrite this and all others
        q - quit, abort
        d - diff, show the differences between the old and the new
        h - help, show this help
        m - merge, run merge tool
        HELP
      end

def show_diff(destination, content) #:nodoc:
        diff_cmd = ENV["THOR_DIFF"] || ENV["RAILS_DIFF"] || "diff -u"

require "tempfile"
        Tempfile.open(File.basename(destination), File.dirname(destination)) do |temp|
          temp.write content
          temp.rewind
          system %(#{diff_cmd} "#{destination}" "#{temp.path}")
        end
      end

def quiet? #:nodoc:
        mute? || (base && base.options[:quiet])
      end

# Calculate the dynamic width of the terminal
      def dynamic_width
        @dynamic_width ||= (dynamic_width_stty.nonzero? || dynamic_width_tput)
      end

def dynamic_width_stty
        `stty size 2>/dev/null`.split[1].to_i
      end

def dynamic_width_tput
        `tput cols 2>/dev/null`.to_i
      end

def truncate(string, width)
        as_unicode do
          chars = string.chars.to_a
          if chars.length <= width
            chars.join
          else
            chars[0, width - 3].join + "..."
          end
        end
      end

if "".respond_to?(:encode)
        def as_unicode
          yield
        end
      else
        def as_unicode
          old = $KCODE
          $KCODE = "U"
          yield
        ensure
          $KCODE = old
        end
      end

def ask_simply(statement, color, options)
        default = options[:default]
        message = [statement, ("(#{default})" if default), nil].uniq.join(" ")
        message = prepare_message(message, *color)
        result = Bundler::Thor::LineEditor.readline(message, options)

return unless result

result = result.strip

if default && result == ""
          default
        else
          result
        end
      end

def ask_filtered(statement, color, options)
        answer_set = options[:limited_to]
        case_insensitive = options.fetch(:case_insensitive, false)
        correct_answer = nil
        until correct_answer
          answers = answer_set.join(", ")
          answer = ask_simply("#{statement} [#{answers}]", color, options)
          correct_answer = answer_match(answer_set, answer, case_insensitive)
          say("Your response must be one of: [#{answers}]. Please try again.") unless correct_answer
        end
        correct_answer
      end

def answer_match(possibilities, answer, case_insensitive)
        if case_insensitive
          possibilities.detect{ |possibility| possibility.downcase == answer.downcase }
        else
          possibilities.detect{ |possibility| possibility == answer }
        end
      end

def merge(destination, content) #:nodoc:
        require "tempfile"
        Tempfile.open([File.basename(destination), File.extname(destination)], File.dirname(destination)) do |temp|
          temp.write content
          temp.rewind
          system %(#{merge_tool} "#{temp.path}" "#{destination}")
        end
      end

def merge_tool #:nodoc:
        @merge_tool ||= ENV["THOR_MERGE"] || git_merge_tool
      end

def git_merge_tool #:nodoc:
        `git config merge.tool`.rstrip rescue ""
      end
    end
  end
end

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