Class: Namaste::Tag

Inherits:
Object
  • Object
show all
Defined in:
lib/namaste/tag.rb

Defined Under Namespace

Modules: Dirtype

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(directory_or_file, tag = nil, value = nil) ⇒ Tag

Returns a new instance of Tag.

Parameters:

  • directory_or_file (Directory, File)
  • tag (String) (defaults to: nil)
  • value (String) (defaults to: nil) 


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# File 'lib/namaste/tag.rb', line 14

def initialize(directory_or_file, tag = nil, value = nil)
  directory_or_file = File.expand_path(directory_or_file)

  tag = Namaste::DUBLIN_KERNEL[tag] if tag.is_a? Symbol

  if File.directory?(directory_or_file)
    @dir = directory_or_file
    @tag = tag.to_s
    @value = value.to_s
    write!
  elsif File.file?(directory_or_file)
    @file = File.new(directory_or_file, "a+")
    @dir = File.dirname(@file.path)
  else
    raise "Unknown directory or file (#{directory_or_file.to_s})"
  end

  load_tag_extensions
end

Class Method Details

.filename(tag, value) ⇒ String

Create a filename for a namaste key/value pair

Returns:

  • (String) 


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# File 'lib/namaste/tag.rb', line 5

def self.filename tag, value
  n = "%s=%s" % [tag, self.elide(value)]
  n = n.slice(0...252) + "..." if n.length > 255
  n
end

Instance Method Details

#delete ⇒ Object

Delete this tag



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# File 'lib/namaste/tag.rb', line 60

def delete
  @value = value # make sure to preserve the value after the tag is deleted
  File.delete(file.path)
  @file = nil
end

#tag ⇒ String

Returns namaste tag.

Returns:

  • (String) —

    namaste tag



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# File 'lib/namaste/tag.rb', line 48

def tag
  @tag ||= File.basename(file.path).split("=").first
end

#tag=(tag) ⇒ Object

Parameters:

  • namaste (String) —

    tag



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# File 'lib/namaste/tag.rb', line 53

def tag=(tag)
  delete
  @tag = tag.to_s
  write!
end

#value ⇒ String

Returns namaste value.

Returns:

  • (String) —

    namaste value



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# File 'lib/namaste/tag.rb', line 35

def value
  file.rewind
  @value ||= file.read
end

#value=(value) ⇒ Object

Parameters:

  • value (String) 


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# File 'lib/namaste/tag.rb', line 41

def value=(value)
  delete
  @value = value.to_s
  write!
end