Class: DirSync::Traverser

Inherits:
Object
  • Object
show all
Defined in:
lib/dir_sync/traverser.rb

Constant Summary collapse

TOLERANCE = 
5
IGNORE_PATTERNS = 
[
  /\.DS_Store$/,
  /\/\._/
]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path, file_system) ⇒ Traverser

Returns a new instance of Traverser.



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# File 'lib/dir_sync/traverser.rb', line 15

def initialize path, file_system
  @file_system = file_system
  @base = Pathname.new path
  @base.mkpath
  @fiber = Fiber.new do
    @base.find { |child| Fiber.yield child if child.file? }
    Fiber.yield nil
  end
  @current = @fiber.resume
end

Instance Attribute Details

#base ⇒ Object (readonly)

Returns the value of attribute base.



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# File 'lib/dir_sync/traverser.rb', line 7

def base
  @base
end

Instance Method Details

#advance ⇒ Object 



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# File 'lib/dir_sync/traverser.rb', line 30

def advance
  @current = @fiber.resume if @current
end

#cp(*traversers) ⇒ Object 



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# File 'lib/dir_sync/traverser.rb', line 50

def cp *traversers
  traversers.each do |t|
    @file_system.cp @current.to_s, "#{t.base}/#{name}" unless equivalent? t
  end
end

#description ⇒ Object 



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# File 'lib/dir_sync/traverser.rb', line 26

def description
  empty? ? 'empty' : "#{name}:#{ts}"
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dir_sync/traverser.rb', line 42

def empty?
  @current.nil?
end

#equivalent?(traverser) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dir_sync/traverser.rb', line 60

def equivalent? traverser
  name == traverser.name and (ts - traverser.ts).abs <= TOLERANCE
end

#ignored? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dir_sync/traverser.rb', line 46

def ignored?
  IGNORE_PATTERNS.any? {|pattern| pattern.match name }
end

#name ⇒ Object 



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# File 'lib/dir_sync/traverser.rb', line 34

def name
  @current.relative_path_from(@base).to_s if @current
end

#rm ⇒ Object 



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# File 'lib/dir_sync/traverser.rb', line 56

def rm
  @file_system.rm @current.to_s
end

#ts ⇒ Object 



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# File 'lib/dir_sync/traverser.rb', line 38

def ts
  @current.mtime.to_i if @current
end