Class Library
In: lib/library.rb
Parent: Object

the library class is primarily a namespace for the Library::Version class to live in. it contains a few usefull methods used to load libraries which have been installed using versioning information. libraries installed in this was will have paths like 

  lib/foo.rb.0.0.0
  lib/foo.rb.2.1.1

and where 

  lib/foo.rb

would be a symbolic link to the latest version of the library. if one wanted only the latest then the normal 'require' or 'load' should suffice, but Library.link and Libray.load provide means to specify a particular interface needed by your program.

Methods
inspect    link    load    new   
Attributes
:filenmae  [RW] 
:version  [RW] 
Classes and Modules
Class Library::Loader
Class Library::Version
Public Class methods
new(filename, version = nil)

not much here presently 

# File lib/library.rb, line 25
  def initialize(filename, version = nil)
    unless version
      @filename, @version = Version.parse(filename)
    else
      @filename, @version = filename, Version.new(version) 
    end
  end
link(filename, interface=nil)

'require' a library which supports a certain interface note that, due to a limitation in Kernel::require, this supports only *.rb files for the moment eg. 

  Library::link 'yourmodule.rb', 0
  Library::link 'yourmodule.rb.0.0.0'
  Library::link 'yourmodule.rb', '0.1.0'

note that the interface argument, while a version string may be given for, is only used to determine what interface is required 

# File lib/library.rb, line 265
    def link filename, interface=nil
      Loader.instance.link (filename, interface)
    end
load(filename, interface=nil)

loads a library which supports a certain interface note that, due to a limitation in Kernel::require, this supports only *.rb files for the moment eg. 

  Library::load 'yourmodule.rb', 0
  Library::load 'yourmodule.rb.0.0.0'
  Library::load 'yourmodule.rb', '0.1.0'

note that the interface argument, while a version string may be given for, is only used to determine what interface is required 

# File lib/library.rb, line 281
    def load filename, interface=nil
      Loader.instance.load (filename, interface)
    end
Public Instance methods
inspect() 
# File lib/library.rb, line 33
  def inspect
    "#{filename}.#{version}"    
  end