Class: Dratools::CommandLineInterface

Inherits:
Object
  • Object
show all
Defined in:
lib/dratools/command_line_interface.rb

Overview

サブコマンドを振り分ける CLI の入口。

Constant Summary collapse

COMMAND_NAME = 
Dratools::NAME
SUCCESS_EXIT_STATUS = 
0
FAILURE_EXIT_STATUS = 
1
SUBCOMMANDS = 
{
  'url' => Commands::UrlCommand,
  'get' => Commands::GetCommand,
  'probe' => Commands::ProbeCommand,
  'tree' => Commands::TreeCommand,
  'meta' => Commands::MetaCommand,
  'runs' => Commands::RunsCommand,
  'size' => Commands::SizeCommand
}.freeze
SUBCOMMAND_ALIASES =

単複の打ち間違いを救う別名。左を打っても右の正規コマンドが動く。ヘルプやエラー・バナーには常に正規名（右）を表示する。

{
  'run' => 'runs',
  'urls' => 'url',
  'sizes' => 'size',
  'trees' => 'tree'
}.freeze
HELP_FLAGS = 
['-h', '--help', 'help'].freeze
VERSION_FLAGS = 
['-v', '--version', 'version'].freeze
SUBCOMMAND_SUMMARIES = 
{
  'url' => 'ダウンロード URL を表示する (--json で JSON)',
  'get' => 'ファイルをダウンロードする',
  'probe' => '短時間の接続確認だけ行う',
  'tree' => '探索ツリーを表示する',
  'meta' => 'レコードのメタ情報を表示する (--json で生 JSON)',
  'runs' => 'run accession の一覧を出力する',
  'size' => 'ダウンロード合計サイズを集計する'
}.freeze
USAGE_EXAMPLES = 
[
  "#{COMMAND_NAME} url DRR000001",
  "#{COMMAND_NAME} meta DRR000001",
  "#{COMMAND_NAME} runs PRJNA341783",
  "#{COMMAND_NAME} size PRJNA341783",
  "#{COMMAND_NAME} get -O ~/Downloads DRR000001",
  "#{COMMAND_NAME} tree PRJNA341783",
  "#{COMMAND_NAME} url --input accessions.txt",
  "printf 'DRR000001\\nDRR000002\\n' | #{COMMAND_NAME} url"
].freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(argv, resolver: AccessionResolver.new, downloader: DownloadService.new, stdout: $stdout, stderr: $stderr, stdin: $stdin) ⇒ CommandLineInterface

Returns a new instance of CommandLineInterface.



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# File 'lib/dratools/command_line_interface.rb', line 68

def initialize(
  argv,
  resolver: AccessionResolver.new,
  downloader: DownloadService.new,
  stdout: $stdout,
  stderr: $stderr,
  stdin: $stdin
)
  @argv = argv
  @resolver = resolver
  @downloader = downloader
  @stdout = stdout
  @stderr = stderr
  @stdin = stdin
end

Class Method Details

.start(argv) ⇒ Object 



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# File 'lib/dratools/command_line_interface.rb', line 64

def self.start(argv)
  new(argv).run
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/dratools/command_line_interface.rb', line 84

def run
  name = @argv.first

  if name.nil?
    print_help(@stderr)
    return FAILURE_EXIT_STATUS
  end
  if HELP_FLAGS.include?(name)
    print_help(@stdout)
    return SUCCESS_EXIT_STATUS
  end
  if VERSION_FLAGS.include?(name)
    @stdout.puts VERSION
    return SUCCESS_EXIT_STATUS
  end

  command_class = SUBCOMMANDS[name] || SUBCOMMANDS[SUBCOMMAND_ALIASES[name]]
  unless command_class
    expected = SUBCOMMANDS.keys.join(', ')
    @stderr.puts "#{COMMAND_NAME}: unknown command '#{name}' (expected: #{expected})"
    return FAILURE_EXIT_STATUS
  end

  command_class.new(
    @argv.drop(1),
    resolver: @resolver,
    downloader: @downloader,
    stdout: @stdout,
    stderr: @stderr,
    stdin: @stdin
  ).run
end