Class: Aspera::Cli::ExtendedValue

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/aspera/cli/extended_value.rb

Overview

command line extended values

Instance Method Summary collapse

Instance Method Details

#evaluate(value) ⇒ Object

parse an option value if it is a String using supported extended value modifiers other value types are returned as is



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# File 'lib/aspera/cli/extended_value.rb', line 66

def evaluate(value)
  return value if !value.is_a?(String)
  # first determine decoders, in reversed order
  decoders_reversed=[]
  while (m=value.match(/^@([^:]+):(.*)/)) and @handlers[:decoder].include?(m[1])
    decoders_reversed.unshift(m[1])
    value=m[2]
  end
  # then read value
  @handlers[:reader].each do |reader,method|
    if m=value.match(/^@#{reader}:(.*)/) then
      value=method.call(m[1])
      break
    end
  end
  decoders_reversed.each do |decoder|
    value=@handlers[:decoder][decoder].call(value)
  end
  return value
end

#modifiers ⇒ Object 



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# File 'lib/aspera/cli/extended_value.rb', line 54

def modifiers;@handlers.keys.map{|i|@handlers[i].keys}.flatten;end

#set_handler(name, type, method) ⇒ Object

add a new :reader or :decoder decoder can be chained, reader is last one on right



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# File 'lib/aspera/cli/extended_value.rb', line 58

def set_handler(name,type,method)
  raise "type must be one of #{@handlers.keys}" unless @handlers.keys.include?(type)
  Log.log.debug("setting #{type} handler for #{name}")
  @handlers[type][name]=method
end