Class: InVFS::UnionFS

Inherits:
Object show all
Defined in:
lib/invfs/unionfs.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*dirs) ⇒ UnionFS

Returns a new instance of UnionFS.



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# File 'lib/invfs/unionfs.rb', line 9

def initialize(*dirs)
  @dirs = dirs
end

Instance Attribute Details

#dirs ⇒ Object (readonly)

Returns the value of attribute dirs.



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# File 'lib/invfs/unionfs.rb', line 7

def dirs
  @dirs
end

Instance Method Details

#file?(lib) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/invfs/unionfs.rb', line 13

def file?(lib)
  dirs.each do |dir|
    path = File.join(dir, lib)
    return true if File.file?(path)
  end

  false
end

#inspect ⇒ Object 



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# File 'lib/invfs/unionfs.rb', line 48

def inspect
  to_s
end

#pretty_print(q) ⇒ Object 



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# File 'lib/invfs/unionfs.rb', line 52

def pretty_print(q)
  q.group(2, "#<#{self.class}", ">") do
    dirs.each_with_index do |d, i|
      q.text "," if i > 0
      q.breakable " "
      d.pretty_print q
    end
  end
end

#read(lib) ⇒ Object

Raises:

  • (Errno::ENOENT) 


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# File 'lib/invfs/unionfs.rb', line 31

def read(lib)
  dirs.each do |dir|
    path = File.join(dir, lib)
    return File.binread(path) if File.file?(path)
  end

  raise Errno::ENOENT, lib
end

#size(lib) ⇒ Object

Raises:

  • (Errno::ENOENT) 


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# File 'lib/invfs/unionfs.rb', line 22

def size(lib)
  dirs.each do |dir|
    path = File.join(dir, lib)
    return File.size(path) if File.file?(path)
  end

  raise Errno::ENOENT, lib
end

#to_path ⇒ Object 



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# File 'lib/invfs/unionfs.rb', line 40

def to_path
  %(#<#{self.class} #{dirs.map { |d| "<#{d}>" }.join(", ")}>)
end

#to_s ⇒ Object 



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# File 'lib/invfs/unionfs.rb', line 44

def to_s
  to_path
end