Class: Thor::Shell::Basic

Inherits:
Object show all
Defined in:
lib/vendor/thor/lib/thor/shell/basic.rb

Direct Known Subclasses

Color

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Basic

Initialize base and padding to nil.



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

def initialize #:nodoc:
  @base, @padding = nil, 0
end

Instance Attribute Details

#base ⇒ Object

Returns the value of attribute base.



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# File 'lib/vendor/thor/lib/thor/shell/basic.rb', line 6

def base
  @base
end

#padding ⇒ Object

Returns the value of attribute padding.



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# File 'lib/vendor/thor/lib/thor/shell/basic.rb', line 6

def padding
  @padding
end

Instance Method Details

#ask(statement, color = nil) ⇒ Object

Ask something to the user and receives a response.

Example

ask(“What is your name?”)



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# File 'lib/vendor/thor/lib/thor/shell/basic.rb', line 25

def ask(statement, color=nil)
  say("#{statement} ", color)
  $stdin.gets.strip
end

#error(statement) ⇒ Object

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



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# File 'lib/vendor/thor/lib/thor/shell/basic.rb', line 151

def error(statement)
  $stderr.puts statement
end

#file_collision(destination) ⇒ Object

Deals with file collision and returns true if the file should be overwriten 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



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# File 'lib/vendor/thor/lib/thor/shell/basic.rb', line 120

def file_collision(destination)
  return true if @always_force
  options = block_given? ? "[Ynaqdh]" : "[Ynaqh]"

  while true
    answer = ask %[Overwrite #{destination}? (enter "h" for help) #{options}]

    case answer
      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...'
      else
        say file_collision_help
    end
  end
end

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

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

Returns:

  • (Boolean) 


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# File 'lib/vendor/thor/lib/thor/shell/basic.rb', line 74

def no?(statement, color=nil)
  !yes?(statement, color)
end

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

Prints a table.

Parameters

Array[Array[String, String, …]]

Options

ident<Integer>

Ident the first column by ident value.



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# File 'lib/vendor/thor/lib/thor/shell/basic.rb', line 86

def print_table(table, options={})
  return if table.empty?

  formats, ident = [], options[:ident].to_i
  options[:truncate] = terminal_width if options[:truncate] == true

  0.upto(table.first.length - 2) do |i|
    maxima = table.max{ |a,b| a[i].size <=> b[i].size }[i].size
    formats << "%-#{maxima + 2}s"
  end

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

  table.each do |row|
    sentence = ""

    row.each_with_index do |column, i|
      sentence << formats[i] % column.to_s
    end

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

#say(message = "", color = nil, force_new_line = (message.to_s !~ /( |\t)$/)) ⇒ 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/vendor/thor/lib/thor/shell/basic.rb', line 37

def say(message="", color=nil, force_new_line=(message.to_s !~ /( |\t)$/))
  message  = message.to_s
  message  = set_color(message, color) if color

  if force_new_line
    $stdout.puts(message)
  else
    $stdout.print(message)
    $stdout.flush
  end
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 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.



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# File 'lib/vendor/thor/lib/thor/shell/basic.rb', line 54

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
  say "#{status}#{spaces}#{message}", nil, true
end

#set_color(string, color, bold = false) ⇒ Object

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



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# File 'lib/vendor/thor/lib/thor/shell/basic.rb', line 158

def set_color(string, color, bold=false) #:nodoc:
  string
end

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

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

Returns:

  • (Boolean) 


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# File 'lib/vendor/thor/lib/thor/shell/basic.rb', line 67

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