Class: Aef::Linebreak::CLI::EncodingsCommand

Inherits:
UserChoices::Command
  • Object
show all
Includes:
UserChoices
Defined in:
lib/aef/linebreak/cli/commands/encodings.rb

Overview

Command-line sub command for encoding detection.

Instance Method Summary collapse

Instance Method Details

#add_choices(builder) ⇒ Object

Define configuration options



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# File 'lib/aef/linebreak/cli/commands/encodings.rb', line 37

def add_choices(builder)
  builder.add_choice(:ensure, :type => [:string]) do |cli|
    cli.uses_option('-e', '--ensure SYSTEMLIST',
      "Verify that given encodings are existent. Separated by commas without spaces. Possible settings: #{Aef::Linebreak::BREAK_BY_SYSTEM.keys.join(', ')}.")
  end
      
  builder.add_choice(:files, :type => :pathname) {|cli| cli.uses_arglist}
end

#add_sources(builder) ⇒ Object

Prepare configuration sources



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# File 'lib/aef/linebreak/cli/commands/encodings.rb', line 29

def add_sources(builder)
  builder.add_source(CommandLineSource, :usage,
    "Usage: #$PROGRAM_NAME encodings [OPTIONS] [FILE]\n\n",
    "Detect linebreak encoding systems of a file.\n"
  )
end

#execute ⇒ Object

Main program



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# File 'lib/aef/linebreak/cli/commands/encodings.rb', line 58

def execute
  systems_by_file = {}
      
  @user_choices[:files].each do |file|
    unless systems_by_file[file]
      systems_by_file[file] = Set.new
      
      file.each_line do |line|
        systems_by_file[file] = Aef::Linebreak.encodings(line) + systems_by_file[file]
      end
    end
  end
      
  failed = false
      
  systems_by_file.each do |file, systems|
    print "#{file}: " unless file == STDIN
      
    sorted_systems = systems.sort do |a,b|
      order = [:unix, :windows, :mac]
      order.index(a) <=> order.index(b)
    end
      
    print sorted_systems.join(',')
      
    if @user_choices[:ensure] and systems != @user_choices[:ensure]
      failed = true
      puts ' (failed)'
    else
      puts
    end
  end
  
  exit false if failed
end

#postprocess_user_choices ⇒ Object

Manual option post processing



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# File 'lib/aef/linebreak/cli/commands/encodings.rb', line 47

def postprocess_user_choices
  if @user_choices[:ensure]
    @user_choices[:ensure] = @user_choices[:ensure].map{|string| string.to_sym }.to_set
  end
      
  if @user_choices[:files].empty? or @user_choices[:files].include?(Pathname('-'))
    @user_choices[:files] = [STDIN]
  end
end