Module: Helper

Extended by:
Helper
Included in:
Helper
Defined in:
lib/helper.rb

Overview

雑多なお助けメソッド群

MacOSX 関連は確認してないので動作するか不明

Defined Under Namespace

Classes: AsyncCommand

Constant Summary collapse

ENTITIES = 
{ quot: '"', amp: "&", nbsp: " ", lt: "<", gt: ">", copy: "(c)" }

Instance Method Summary collapse

Instance Method Details

#confirm(message) ⇒ Object 



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# File 'lib/helper.rb', line 35

def confirm(message)
  confirm_msg = "#{message} (y/n)?: "
  STDOUT.print confirm_msg   # Logger でロギングされないように直接標準出力に表示

  while input = $stdin.gets
    case input[0].downcase
    when "y"
      return true
    when "n"
      return false
    else
      STDOUT.print confirm_msg
    end
  end
end

#determine_os ⇒ Object 



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# File 'lib/helper.rb', line 24

def determine_os
  case
  when os_windows?
    :windows
  when os_mac?
    :mac
  else
    :other
  end
end

#open_browser(url) ⇒ Object 



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# File 'lib/helper.rb', line 72

def open_browser(url)
  case determine_os
  when :windows
    escaped_url = url.gsub("%", "%^").gsub("&", "^&")
    # MEMO: start の引数を "" で囲むと動かない

    `start #{escaped_url}`
  when :mac
    `open "#{url}"`
  else
    open_browser_linux(url, "ブラウザが見つかりませんでした")
  end
end

#open_browser_linux(address, error_message) ⇒ Object 



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# File 'lib/helper.rb', line 50

def open_browser_linux(address, error_message)
  %w(xdg-open firefox w3m).each do |browser|
    system(%!#{browser} "#{address}"!)
    return if $?.exitstatus != 127
  end
  error error_message
end

#open_directory(path, confirm_message = nil) ⇒ Object 



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# File 'lib/helper.rb', line 58

def open_directory(path, confirm_message = nil)
  if confirm_message
    return unless confirm(confirm_message)
  end
  case determine_os
  when :windows
    `explorer "file:///#{path.encode(Encoding::Windows_31J)}"`
  when :mac
    `open "#{path}"`
  else
    open_browser_linux(path, "フォルダが開けませんでした")
  end
end

#os_mac? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/helper.rb', line 20

def os_mac?
  @@os_is_mac ||= RUBY_PLATFORM =~ /darwin/
end

#os_windows? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/helper.rb', line 16

def os_windows?
  @@os_is_windows ||= RUBY_PLATFORM =~ /mswin(?!ce)|mingw|cygwin|bccwin/i
end

#pretreatment_source(src, encoding = Encoding::UTF_8) ⇒ Object

ダウンロードしてきたデータを使いやすいように処理



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# File 'lib/helper.rb', line 102

def pretreatment_source(src, encoding = Encoding::UTF_8)
  restor_entity(src.force_encoding(encoding)).gsub("\r", "")
end

#print_horizontal_rule ⇒ Object 



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# File 'lib/helper.rb', line 85

def print_horizontal_rule
  puts "―" * 35
end

#replace_filename_special_chars(str, invalid_replace = false) ⇒ Object 



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# File 'lib/helper.rb', line 89

def replace_filename_special_chars(str, invalid_replace = false)
  result = str.tr("/:*?\"<>|.", "／：＊？”〈〉｜．").gsub("\\", "￥")
  if invalid_replace
    org_encoding = result.encoding
    result = result.encode(Encoding::Windows_31J, invalid: :replace, undef: :replace, replace: "_")
                   .encode(org_encoding)
  end
  result
end

#restor_entity(str) ⇒ Object

エンティティ復号



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# File 'lib/helper.rb', line 110

def restor_entity(str)
  result = str.encode("UTF-16BE", "UTF-8", :invalid => :replace, :undef => :replace, :replace => "?").encode("UTF-8")
  ENTITIES.each do |key, value|
    result.gsub!("&#{key};", value)
  end
  result
end