Class: Main::Usage

Inherits:
Array show all
Defined in:
lib/main/usage.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Usage

Returns a new instance of Usage.



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# File 'lib/main/usage.rb', line 7

def initialize opts={} 
  self.fields=[]
  self.chunkname = lambda{|chunkname| chunkname.to_s.strip.upcase}
  self.upcase = true 
  self.eos = "\n\n"
  if opts.has_key?(:upcase) or opts.has_key?('upcase')
    self.upcase = opts[:upcase] || opts['optcase']
  end
end

Class Method Details

.default_synopsis(main) ⇒ Object 



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# File 'lib/main/usage.rb', line 28

def self.default_synopsis main
# build up synopsis
  s = "#{ main.name }"

# mode info
  if main.mode_name != 'main'
    s << " #{ main.fully_qualified_mode.join ' ' }"
  end

  unless main.modes.empty?
    modes = main.modes.keys.join('|')
    s << " (#{ modes })"
  end

# argument info
  main.parameters.each do |p|
    if p.type == :argument
      if(p.required? and p.arity != -1)
        if p.arity > 0
          p.arity.times{ s << " #{ p.name }" }
        else
          (p.arity.abs - 1).times{ s << " #{ p.name }" }
          s << " #{ p.name }*"
        end
      else
        #s << " [#{ p.name }]"
        if p.arity > 0
          a = []
          p.arity.times{ a << "#{ p.name }" }
          s << " [#{ a.join ' ' }]"
        else
          a = []
          (p.arity.abs - 1).times{ a << "#{ p.name }" }
          a << "#{ p.name }*"
          s << " [#{ a.join ' ' }]"
        end
      end
    end
  end

# keyword info
  main.parameters.each do |p|
    if p.type == :keyword
      if p.required?
        s << " #{ p.name }=#{ p.name }"
      else
        s << " [#{ p.name }=#{ p.name }]"
      end
    end
  end

# option info
  n = 0
  main.parameters.each do |p|
    if p.type == :option
      if p.required?
        case p.argument
          when :required
            s << " --#{ p.name }=#{ p.name }"
          when :optional
            s << " --#{ p.name }=[#{ p.name }]"
          else
            s << " --#{ p.name }"
        end
      else
        n += 1
      end
    end
  end
  if n > 0
    s << " [options]+"
  end

# help info
=begin
  if main.modes.size > 0
    modes = main.modes.keys.join('|')
    s << "\n#{ main.name } (#{ modes }) help"
  end
  if main.mode_name != 'main'
    s << "\n#{ main.name } #{ main.fully_qualified_mode.join ' ' } help"
  else
    s << "\n#{ main.name } help"
  end
=end

  s
end

.default_usage(main) ⇒ Object Also known as: default 



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# File 'lib/main/usage.rb', line 172

def default_usage main
  usage = new
  usage.main = main
# HACK
  %w( name synopsis description parameters author ).each do |key|
    usage[key] = nil
  end
  usage
end

Instance Method Details

#author_section ⇒ Object 



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# File 'lib/main/usage.rb', line 167

def author_section
  main.author
end

#clear ⇒ Object 



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# File 'lib/main/usage.rb', line 17

def clear
  super
ensure
  fields.clear
end

#delete_at(key) ⇒ Object Also known as: delete 



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# File 'lib/main/usage.rb', line 23

def delete_at key
  self[key] = nil
end

#description_section ⇒ Object 



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# File 'lib/main/usage.rb', line 129

def description_section
  main.description if main.description?
end

#name_section ⇒ Object 



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# File 'lib/main/usage.rb', line 117

def name_section
  if main.version?
    "#{ main.name } v#{ main.version }"
  else
    "#{ main.name }"
  end
end

#parameters_section ⇒ Object 



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# File 'lib/main/usage.rb', line 133

def parameters_section
  arguments = main.parameters.select{|p| p.type == :argument}
  keywords = main.parameters.select{|p| p.type == :keyword}
  options = main.parameters.select{|p| p.type == :option}
  environment = main.parameters.select{|p| p.type == :environment}

  help, nothelp = options.partition{|p| p.name == 'help'}
  options = nothelp + help

  parameters = arguments + keywords + options + environment

  s =
    parameters.map do |p|
      ps = ''
      ps << Util.columnize("#{ p.synopsis }", :indent => 2, :width => 78)
      #ps << Util.columnize("* #{ p.synopsis }", :indent => 2, :width => 78)
      #ps << "\n"
      if p.description?
        ps << "\n"
        ps << Util.columnize("#{ p.description }", :indent => 6, :width => 78)
        #ps << Util.columnize(p.description, :indent => 6, :width => 78)
        #ps << "\n"
      end
      #ps << "\n"
      unless(p.examples.nil? or p.examples.empty?)
        p.examples.each do |example|
          ps << "\n"
          ps << Util.columnize("#{ example }", :indent => 8, :width => 78)
        end
      end
      ps
    end.join("\n")
end

#set_defaults! ⇒ Object 



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# File 'lib/main/usage.rb', line 187

def set_defaults!
  usage = self
  usage['name']        ||= name_section
  usage['synopsis']    ||= synopsis_section
  usage['description'] ||= description_section
  usage['parameters']  ||= parameters_section unless main.parameters.empty?
  usage['author']      ||= author_section if main.author?
end

#synopsis_section ⇒ Object 



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# File 'lib/main/usage.rb', line 125

def synopsis_section
  main.synopsis
end

#to_s ⇒ Object 



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# File 'lib/main/usage.rb', line 196

def to_s
  set_defaults!
  s = '' 
  each_pair do |key, value|
    next unless(key and value)
    up, down = key.to_s.upcase, key.to_s.downcase
    if value
      s << (upcase ? up : down) << "\n" 
      s << Util.indent(Util.unindent(value.to_s), 2)
      s << eos 
    end
  end
  s
end