= Description
  A series of extra constants for the Dir class that define special folders
  on MS Windows systems, as well as methods for creating and detecting
  junctions, i.e. symlinks for directories.

= Installation
  gem install win32-dir

= Synopsis
  require 'win32/dir'
	
  # C:\WINNT or C:\WINDOWS
  puts Dir::WINDOWS

  # C:\Documents and Settings\Daniel\Start Menu\Programs\Administrative Tools	 
  puts Dir::ADMINTOOLS
	
  Dir.mkdir('C:\from')
  Dir.create_junction('C:\to', 'C:\from')

= Constants
  Not all of these are guaranteed to be defined on your system. Also note
  that the directories are merely defined. It doesn't necessarily mean they
  actually exist.
	
== The following constants should be defined:	
Dir::ADMINTOOLS
  The file system directory that is used to store administrative tools for an
  individual user. The Microsoft Management Console (MMC) will save
  customized consoles to this directory, and it will roam with the user.

Dir::COMMON_ADMINTOOLS
  The file system directory containing administrative tools for all users
  of the computer.
	
Dir::APPDATA
  The file system directory that serves as a common repository for
  application-specific data. A typical path is
  C:\Documents and Settings\<user>\Application Data.
   
  This CSIDL is supported by the redistributable shfolder.dll for
  systems that do not have the Microsoft Internet Explorer 4.0
  integrated Shell installed.
	
Dir::COMMON_APPDATA
  The file system directory containing application data for all users. A
  typical path is C:\Documents and Settings\All Users\Application Data.
	
Dir::COMMON_DOCUMENTS
  The file system directory that contains documents that are common to all
  users. A typical paths is C:\Documents and Settings\All Users\Documents.
	
Dir::COOKIES
  The file system directory that serves as a common repository for Internet
  cookies. A typical path is C:\Documents and Settings\<user>\Cookies.

Dir::HISTORY
  The file system directory that serves as a common repository for Internet
  history items.

Dir::INTERNET_CACHE
  The file system directory that serves as a common repository for temporary
  Internet files. A typical path is
  C:\Documents and Settings\<user>\Local Settings\Temporary Internet Files.

Dir::LOCAL_APPDATA
  The file system directory that serves as a data repository for local
  (nonroaming) applications. A typical path is
  C:\Documents and Settings\<user>\Local Settings\Application Data.

Dir::MYPICTURES
  The file system directory that serves as a common repository for image
  files. A typical path is
  C:\Documents and Settings\<user>\My Documents\My Pictures.
	
Dir::PERSONAL
  The virtual folder representing the My Documents desktop item. This is
  equivalent to Dir::MYDOCUMENTS.

Dir::PROGRAM_FILES
  The Program Files folder. A typical path is C:\Program Files.
	
Dir::PROGRAM_FILES_COMMON
  A folder for components that are shared across applications. A typical path
  is C:\Program Files\Common.
	
Dir::SYSTEM
  The Windows System folder. A typical path is C:\Windows\System32.
	
Dir::WINDOWS
  The Windows directory or SYSROOT. This corresponds to the %windir% or
  %SYSTEMROOT% environment variables. A typical path is C:\Windows.
	 
== The following constants may or may not be defined:
Dir::ALTSTARTUP
  The file system directory that corresponds to the user's nonlocalized
  Startup program group.
	
Dir::BITBUCKET
  The virtual folder containing the objects in the user's Recycle Bin.
	
Dir::CDBURN_AREA
  The file system directory acting as a staging area for files waiting to
  be written to CD.

Dir::COMMON_ALTSTARTUP
  The file system directory that corresponds to the nonlocalized Startup
  program group for all users.

Dir::COMMON_DESKTOPDIRECTORY
  The file system directory that contains files and folders that appear on
  the desktop for all users. A typical path is
  C:\Documents and Settings\All Users\Desktop.

Dir::COMMON_FAVORITES
  The file system directory that serves as a common repository for favorite
  items common to all users.

Dir::COMMON_MUSIC
  The file system directory that serves as a repository for music files
  common to all users.

Dir::COMMON_PICTURES
  The file system directory that serves as a repository for image files
  common to all users.

Dir::COMMON_PROGRAMS
  The file system directory that contains the directories for the common
  program groups that appear on the Start menu for all users. 

Dir::COMMON_STARTMENU
  The file system directory that contains the programs and folders that
  appear on the Start menu for all users.

Dir::COMMON_STARTUP
  The file system directory that contains the programs that appear in the
  Startup folder for all users.

Dir::COMMON_TEMPLATES
  The file system directory that contains the templates that are available
  to all users.

Dir::COMMON_VIDEO
  The file system directory that serves as a repository for video files
  common to all users.

Dir::CONTROLS
  The virtual folder containing icons for the Control Panel applications.

Dir::DESKTOP
  The virtual folder representing the Windows desktop, the root of the
  namespace.

Dir::DESKTOPDIRECTORY
  The file system directory used to physically store file objects on the
  desktop (not to be confused with the desktop folder itself).

Dir::DRIVES
  The virtual folder representing My Computer, containing everything on
  the local computer: storage devices, printers, and Control Panel. The
  folder may also contain mapped network drives.

Dir::FAVORITES
  The file system directory that serves as a common repository for the
  user's favorite items.

Dir::FONTS
  A virtual folder containing fonts.
	
Dir::INTERNET
  A virtual folder representing the Internet.

Dir::MYDOCUMENTS
  The virtual folder representing the My Documents desktop item.  See also
  Dir::PERSONAL.

Dir::MYMUSIC
  The file system directory that serves as a common repository for music files.

Dir::MYVIDEO
  The file system directory that serves as a common repository for video files.

Dir::NETHOOD
  A file system directory containing the link objects that may exist in the
  My Network Places virtual folder. It is not the same as Dir::NETWORK, which
  represents the network namespace root.

Dir::NETWORK
  A virtual folder representing Network Neighborhood, the root of the network
  namespace hierarchy.

Dir::PRINTERS
  The virtual folder containing installed printers.

Dir::PRINTHOOD
  The file system directory that contains the link objects that can exist in
  the "Printers" virtual folder.

Dir::PROFILE
  The user's profile folder.

Dir::PROFILES
  The file system directory containing user profile folders.

Dir::PROGRAMS
  The file system directory that contains the user's program groups (which
  are themselves file system directories).

Dir::RECENT
  The file system directory that contains shortcuts to the user's most
  recently used documents.

Dir::SENDTO
  The file system directory that contains Send To menu items.

Dir::STARTMENU
  The file system directory containing Start menu items.

Dir::STARTUP
  The file system directory that corresponds to the user's Startup program
  group.

Dir::TEMPLATES
  The file system directory that serves as a common repository for document
  templates.

== Developer's Notes
  The SHGetFolderPath() documentation on MSDN is somewhat vague about which
  CSIDL constants are guaranteed to be defined.  However, there are 15 which
  *should* be defined (see docs above). The rest I cannot vouch for.
   
  Some of these folders are virtual, and the value will be the display name
  only instead of an actual path.
	
== Known Bugs
  The Unicode support is not quite there for Dir.create_junction. It creates
  the directory and junction fine, but the +to+ name appears to get garbled
  with regards to the character set.
	
  Please log any other bug reports on the project page at
  http://www.github.com/djberg96/win32-dir

== Future Plans
  Fix the Unicode issue with Dir.create_junction.
  Other suggestions welcome.

== Acknowledgements
  Shashank Date and Zach Dennis for the suggestion and supporting comments
  on the mailing list.
	
  Timothy Byrd and Autrijus Tang for help (directly or indirectly) with the
  junction methods. Timothy provided a pure Ruby version of the junction
  code that I later borrowed from.
	
  Most of the documentation was copied from the MSDN web site.

== License
  Artistic 2.0
    
== Copyright
  (C) 2003-2012 Daniel J. Berger, All Rights Reserved
    
== Warranty
  This package is provided "as is" and without any express or
  implied warranties, including, without limitation, the implied
  warranties of merchantability and fitness for a particular purpose.
    
== Authors
  Daniel J. Berger
  Park Heesob