Class: Gem::Micro::OptionsParser

Inherits:
Object
  • Object
show all
Defined in:
lib/microgem/options_parser.rb

Constant Summary collapse

EXECUTABLE = 
File.basename($0)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ OptionsParser

Returns a new instance of OptionsParser.



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# File 'lib/microgem/options_parser.rb', line 10

def initialize
  @options = {}
end

Instance Attribute Details

#arguments ⇒ Object

Returns the value of attribute arguments.



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# File 'lib/microgem/options_parser.rb', line 8

def arguments
  @arguments
end

#command ⇒ Object

Returns the value of attribute command.



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# File 'lib/microgem/options_parser.rb', line 8

def command
  @command
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/microgem/options_parser.rb', line 8

def options
  @options
end

Instance Method Details



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# File 'lib/microgem/options_parser.rb', line 58

def banner
  parser.to_s
end

#parse(arguments) ⇒ Object 



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# File 'lib/microgem/options_parser.rb', line 62

def parse(arguments)
  parser.parse! arguments
  self.command = arguments.shift
  self.arguments = arguments
  self
end

#parser ⇒ Object 



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# File 'lib/microgem/options_parser.rb', line 14

def parser
  @parser ||= OptionParser.new do |opts|
    opts.banner =  "Microgem is an unsophisticated package manager for Ruby."
    opts.separator "And the first commandline utility to start with a multibyte character; µ"
    opts.separator "Although you apperantly don’t appreciate unicode enough, how lame… ;-)" if EXECUTABLE != 'µgem'
    opts.separator ""
    opts.separator "  Usage:"
    opts.separator "        #{EXECUTABLE} [command] [arguments…] [options…]"
    opts.separator ""
    opts.separator "  Example:"
    opts.separator "        #{EXECUTABLE} install rake"
    opts.separator "        #{EXECUTABLE} install rails --force"
    opts.separator "        #{EXECUTABLE} cache update --debug"
    opts.separator ""
    opts.separator "  Options:"
    
    opts.on("--debug", "Raises the log level to `debug'") do
      @options[:log_level] = :debug
    end
    
    opts.on("--force", "Forces a command") do
      @options[:force] = true
    end
    
    opts.on("--simple-downloader", "Use curl to download files instead of Net::HTTP") do
      @options[:simple_downloader] = true
    end
    
    opts.on("--simple-unpacker", "Use external tools to unpack archives instead of Zlib") do
      @options[:simple_unpacker] = true
    end
    
    opts.on("--simple", "Enables --simple-downloader and --simple-unpacker") do
      @options[:simple_downloader] = @options[:simple_unpacker] = true
    end
    
    opts.on("--help", "Show help information") do
      puts opts
      exit
    end
    
  end
end