Class: YAMLCommand::Command::SplatCommand

Inherits:
YAMLCommand::Command show all
Defined in:
lib/yaml_command/splat.rb

Overview

Writes each entry of a YAML hash to a file. This is the opposite of #slurp.

Instance Attribute Summary

Attributes inherited from YAMLCommand::Command

#file

Instance Method Summary collapse

Methods inherited from YAMLCommand::Command

command_name, #debug=, #debug?, #h!, #help!, #inspect=, #inspect?, #json=, #json?, #mute=, #mute?, #yaml=, #yaml?

Instance Method Details

#call(dir = nil) ⇒ Object

Splat a YAML mapping document into a directory of files. One file is created for each mapping key.



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# File 'lib/yaml_command/splat.rb', line 18

def call(dir=nil)
  raise 'not a mapping' unless Hash === data

  dir ||= file.chomp('.yaml').chomp('.yml')

  old_map = build_old_map(dir)
  new_map = build_new_map(dir)

  # TODO: get a list of keys that will actually change

  remove = (old_map.keys - new_map.keys).sort

  if dryrun?
    save_dryrun(remove, new_map.keys)
    return
  end

  unless remove.empty? or force?
    $stderr.puts "This operation will remove:"
    remove.each do |f|
      $stderr.puts "  #{f}"
    end
    $stderr.puts "Use -f/--force option to proceed."
    return
  end

  remove.each do |f|
    FileUtils.rm_r(f) if File.exist?(f)
  end

  new_map.each do |f,v|
    if v != old_map[f]
      d = File.dirname(f)
      FileUtils.mkdir_p(d) unless File.directory?(d)
      File.open(f, 'w'){ |f| f << v }
    end
  end

  nil
end