Class: Dog::Map

Inherits:
Object
  • Object
show all
Defined in:
lib/dog/map.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Map

Returns a new instance of Map.



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# File 'lib/dog/map.rb', line 8

def initialize
  @map = {"@home" => []}
  @topic_name = "@home"
end

Instance Attribute Details

#topic_name ⇒ Object

Returns the value of attribute topic_name.



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# File 'lib/dog/map.rb', line 6

def topic_name
  @topic_name
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/dog/map.rb', line 99

def [](key)
  @map[key]
end

#add(topic: @topic_name, name:, path:) ⇒ Object 



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# File 'lib/dog/map.rb', line 71

def add(topic: @topic_name, name:, path:)
  @map[@topic_name].push(
    create_link(name,path)
  )
end

#count(topic = @topic_name) ⇒ Object 



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# File 'lib/dog/map.rb', line 21

def count(topic = @topic_name)
  @map[topic].length
end

#find_incoming_links(destination) ⇒ Object 



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# File 'lib/dog/map.rb', line 103

def find_incoming_links(destination)
  links = []
  @map.each do |key, value|
    value.each do |item|
      if item["path"] == destination
        if key == @topic_name
          links.push(
            create_link("#{key} (<<)", key)
          )
        else
          links.push(
            create_link(key, key)
          )
        end
      end
    end
  end
  return links
end

#has_topic?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dog/map.rb', line 43

def has_topic?(name)
  @map.has_key?(name)
end

#here ⇒ Object 



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# File 'lib/dog/map.rb', line 47

def here
  @map[@topic_name]
end

#link_names(topic) ⇒ Object 



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# File 'lib/dog/map.rb', line 123

def link_names(topic)
  @map[topic].map{|l| l["name"]}
end

#load ⇒ Object 



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# File 'lib/dog/map.rb', line 85

def load
  begin
    data = YAML.load_file(MAP_FILENAME)
    @map = data if data
  rescue Errno::ENOENT, Errno::ENOTDIR
    return false
  end
  return true
end

#move_down(topic: @topic_name, index:) ⇒ Object 



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# File 'lib/dog/map.rb', line 34

def move_down(topic: @topic_name, index:)
  if index < count(@topic_name) - 1
    @map[@topic_name][index],
    @map[@topic_name][index + 1]  =
    @map[@topic_name][index + 1],
    @map[@topic_name][index]
  end
end

#move_up(topic: @topic_name, index:) ⇒ Object 



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# File 'lib/dog/map.rb', line 25

def move_up(topic: @topic_name, index:)
  if index > 0
    @map[@topic_name][index],
    @map[@topic_name][index - 1]  =
    @map[@topic_name][index - 1],
    @map[@topic_name][index]
  end
end

#name(topic: @topic_name, index:) ⇒ Object 



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# File 'lib/dog/map.rb', line 13

def name(topic: @topic_name, index:)
  @map[topic][index]["name"]
end

#navigate(destination) ⇒ Object 



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# File 'lib/dog/map.rb', line 77

def navigate( destination )
  if !@map[destination]
    @map[destination] = []
  end

  @topic_name = destination
end

#path(topic: @topic_name, index:) ⇒ Object 



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# File 'lib/dog/map.rb', line 17

def path(topic: @topic_name, index:)
  @map[topic][index]["path"]
end

#remove_link(topic: @topic_name, name:) ⇒ Object 



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# File 'lib/dog/map.rb', line 55

def remove_link(topic: @topic_name, name:)
  here.delete_if do |link|
    link["name"] == name
  end
end

#remove_topic(topic = @topic) ⇒ Object 



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# File 'lib/dog/map.rb', line 51

def remove_topic(topic = @topic)
  @map.delete(@topic)
end

#replace(topic: @topic_name, name:, new_name:, new_path:) ⇒ Object 



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# File 'lib/dog/map.rb', line 61

def replace(topic: @topic_name, name:, new_name:, new_path:)
  index = @map[@topic_name].index do |link|
    link["name"] == name
  end

  if index
    here[index] = create_link(new_name, new_path)
  end
end

#save ⇒ Object 



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# File 'lib/dog/map.rb', line 95

def save
  File.write(MAP_FILENAME, @map.to_yaml)
end