Class: Balmora::Arguments

Inherits:
Object
  • Object
show all
Defined in:
lib/balmora/arguments.rb

Defined Under Namespace

Classes: Error

Class Method Summary collapse

Class Method Details

._wrap(text, length) ⇒ Object 



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# File 'lib/balmora/arguments.rb', line 162

def self._wrap(text, length)
  line = ''
  result = []

  text.split("\n").each() { |text_line|
    text_line.split(' ').each() { |word|
      if (line + word + ' ').length > length
        result.push(line.rstrip())
        line = ''
      end

      line += word + ' '
    }

    result.push(line.rstrip())
    line = ''
  }

  return result
end

.format(lines) ⇒ Object 



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# File 'lib/balmora/arguments.rb', line 127

def self.format(lines)
  indent =
    lines.
    inject(0) { |current, line|
      if line.instance_of?(::String)
        next current
      end

      if current < line[0].length
        current = line[0].length
      end

      current
    } +
    4

  result = []
  lines.each() { |line|
    if line.instance_of?(::String)
      result.push(line)
      next
    end

    summary = _wrap(line[1] || '', 60)
    result.push(line[0] + (' ' * (indent - line[0].length)) +
      (summary[0] || ''))

    (summary[1..-1] || []).each() { |ln| result.push(' ' * indent + ln) }

    result.push('')
  }

  return result.join("\n").rstrip()
end

.help(options) ⇒ Object 



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# File 'lib/balmora/arguments.rb', line 106

def self.help(options)
  lines = []
  options.each() { |long, option|
    if option.instance_of?(::String)
      lines.push(option)
      next
    end

    arg =
      if option[:shortcut].nil?()
        (' ' * 7) + '--' + long.to_s()
      else
        (' ' * 4) + '-' + option[:shortcut] + ', ' + '--' + long.to_s()
      end

    lines.push([arg, option[:description]])
  }

  return format(lines)
end

.parse(options, argv) ⇒ Object 



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# File 'lib/balmora/arguments.rb', line 5

def self.parse(options, argv)
  shortcuts = _shortcuts(options)

  result = {}
  index = 0
  tail = nil
  while index < argv.length
    arg = argv[index]

    if arg.start_with?('--')
      new_index = _parse_key(result, options, argv, index, arg[2..-1])
    elsif arg.start_with?('-')
      new_index = _parse_flags(result, options, argv, index, shortcuts, arg)
    else
      new_index = nil
    end

    if new_index.nil?()
      tail = argv[index..-1]
      break
    end

    index = new_index + 1
  end

  options.each() { |key, value|
    if value[:flag] && !result.has_key?(key)
      result[key] = false
    end
  }

  return result, tail
end