ListFileTree

#===============================================================================
# begins file handlers
class File
  #-----------------------------------------------------------------------------
  #  Reads all files in a directory
  #-----------------------------------------------------------------------------
  def self.readAll(dir)
    files = []
    Dir.chdir(dir){ Dir.glob("*"){ |f| files.push(dir+"/"+f) } }
    return files.sort
  end
  #-----------------------------------------------------------------------------
  #  Checks for existing directory, gets around non-UNICODE characters
  #-----------------------------------------------------------------------------
  def self.safeDir?(dir)
    ret = false; Dir.chdir(dir) { ret = true } rescue nil
    return ret
  end
  #-----------------------------------------------------------------------------
  #  Generates entire file/folder tree from a certain directory
  #-----------------------------------------------------------------------------
  def self.grabAll(dir)
    # sets variables for starting
    files = []
    for file in self.readAll(dir)
      # engages in recursion to read the entire file tree
      files += self.safeDir?(file) ? self.grabAll(file) : [file]
    end
    # returns all found files
    return files
  end
  #-----------------------------------------------------------------------------
end