Class: Freyia::Shell::Basic

Inherits:
Object
  • Object
show all
Defined in:
lib/freyia/shell/basic.rb

Direct Known Subclasses

Color

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(base:) ⇒ Basic

Initialize base, mute and padding to nil.



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# File 'lib/freyia/shell/basic.rb', line 15

def initialize(base:)
  @base = base
  @mute = false
  @padding = 0
  @always_force = false
end

Instance Attribute Details

#base ⇒ Object

Returns the value of attribute base.



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# File 'lib/freyia/shell/basic.rb', line 10

def base
  @base
end

#padding ⇒ Object

Returns the value of attribute padding.



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# File 'lib/freyia/shell/basic.rb', line 11

def padding
  @padding
end

Instance Method Details

#ask(statement, *args) ⇒ Object

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: "Neptune"

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



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# File 'lib/freyia/shell/basic.rb', line 83

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

#error(statement) ⇒ Object

Called if something goes wrong during the execution. This is used by Freyia internally and should not be used inside your scripts. If something went wrong, you can always raise an exception. If you raise a Freyia::Error, it will be rescued and wrapped in the method below.



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# File 'lib/freyia/shell/basic.rb', line 256

def error(statement)
  stderr.puts statement
end

#file_collision(destination) ⇒ Object

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



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# File 'lib/freyia/shell/basic.rb', line 211

def file_collision(destination) # rubocop:todo Metrics
  return true if @always_force

  options = block_given? ? "[Ynaqdhm]" : "[Ynaqh]"

  loop do # rubocop:todo Metrics/BlockLength
    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 `FREYIA_MERGE` env."
    else
      say file_collision_help(block_given?)
    end
  end
end

#indent(count = 1) ⇒ Object

Sets the output padding while executing a block and resets it.



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# File 'lib/freyia/shell/basic.rb', line 45

def indent(count = 1)
  orig_padding = padding
  self.padding = padding + count
  yield
  self.padding = orig_padding
end

#mute ⇒ Object

Mute everything that’s inside given block



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# File 'lib/freyia/shell/basic.rb', line 24

def mute
  @mute = true
  yield
ensure
  @mute = false
end

#mute? ⇒ Boolean

Check if base is muted

Returns:

  • (Boolean) 


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# File 'lib/freyia/shell/basic.rb', line 33

def mute?
  @mute
end

#no?(statement, color = nil) ⇒ Boolean

Asks the user a question and returns true if the user replies “n” or “no”.

Returns:

  • (Boolean) 


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# File 'lib/freyia/shell/basic.rb', line 160

def no?(statement, color = nil)
  !!(ask(statement, color, add_to_history: false) =~ is?(:no))
end

#print_in_columns(array) ⇒ Object

Prints values in columns

Parameters

Array[String, String, …]



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# File 'lib/freyia/shell/basic.rb', line 169

def print_in_columns(array)
  printer = ColumnPrinter.new(stdout)
  printer.print(array)
end

#print_table(array, options = {}) ⇒ Object

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.

borders<Boolean>

Adds ascii borders.



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# File 'lib/freyia/shell/basic.rb', line 184

def print_table(array, options = {})
  printer = TablePrinter.new(stdout, options)
  printer.print(array)
end

#print_wrapped(message, options = {}) ⇒ Object

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.



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# File 'lib/freyia/shell/basic.rb', line 198

def print_wrapped(message, options = {})
  printer = WrappedPrinter.new(stdout, options)
  printer.print(message)
end

#say(message = "", color = nil, force_new_line = (message.to_s !~ %r{( |\t)\Z})) ⇒ Object

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.")



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# File 'lib/freyia/shell/basic.rb', line 101

def say(message = "", color = nil, force_new_line = (message.to_s !~ %r{( |\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_error(message = "", color = nil, force_new_line = (message.to_s !~ %r{( |\t)\Z})) ⇒ Object

Say (print) an error 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_error("error: something went wrong")



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# File 'lib/freyia/shell/basic.rb', line 118

def say_error(message = "", color = nil, force_new_line = (message.to_s !~ %r{( |\t)\Z}))
  return if quiet?

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

  stderr.print(buffer)
  stderr.flush
end

#say_status(status, message, log_status = true) ⇒ Object

Say a status with the given color and appends the message. Since this method is used frequently by automations, 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.



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# File 'lib/freyia/shell/basic.rb', line 133

def say_status(status, message, log_status = true) # rubocop:disable Style/OptionalBooleanParameter
  return if quiet? || log_status == false

  spaces = "  " * (padding + 1)
  status = status.to_s.rjust(12)
  margin = (" " * status.length) + spaces

  color  = log_status.is_a?(Symbol) ? log_status : :green
  status = set_color status, color, true if color

  message = message.to_s.chomp.gsub(%r{(?<!\A)^}, margin)
  buffer = "#{status}#{spaces}#{message}\n"

  stdout.print(buffer)
  stdout.flush
end

#set_color(string) ⇒ Object

Apply color to the given string with optional bold. Disabled in the Freyia::Shell::Basic class.



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# File 'lib/freyia/shell/basic.rb', line 263

def set_color(string, *) #:nodoc:
  string
end

#yes?(statement, color = nil) ⇒ Boolean

Asks the user a question and returns true if the user replies “y” or “yes”.

Returns:

  • (Boolean) 


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# File 'lib/freyia/shell/basic.rb', line 153

def yes?(statement, color = nil)
  !!(ask(statement, color, add_to_history: false) =~ is?(:yes))
end