Class: ReVIEW::Book::Index

Inherits:
Object show all
Includes:
Enumerable
Defined in:
lib/review/book/index.rb

Defined Under Namespace

Classes: Item

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(items) ⇒ Index

Returns a new instance of Index.



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# File 'lib/review/book/index.rb', line 46

def initialize(items)
  @items = items
  @index = {}
  @logger = ReVIEW.logger
  items.each do |i|
    if @index[i.id]
      @logger.warn "warning: duplicate ID: #{i.id} (#{i})"
    end
    @index[i.id] = i
  end
  @image_finder = nil
end

Class Method Details

.item_class ⇒ Object 



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# File 'lib/review/book/index.rb', line 36

def self.item_class
  self::Item
end

.parse(src, *args) ⇒ Object 



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# File 'lib/review/book/index.rb', line 19

def self.parse(src, *args)
  items = []
  seq = 1
  src.grep(%r{\A//#{item_type}}) do |line|
    if id = line.slice(/\[(.*?)\]/, 1)
      items.push item_class.new(id, seq)
      seq += 1
      if id.empty?
        ReVIEW.logger.warn "warning: no ID of #{item_type} in #{line}"
      end
    end
  end
  new(items, *args)
end

Instance Method Details

#[](id) ⇒ Object 



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# File 'lib/review/book/index.rb', line 59

def [](id)
  @index.fetch(id)
rescue
  if @index.keys.map { |i| i.split('|').last }.flatten. # unfold all ids
     each_with_object(Hash.new(0)) { |i, h| h[i] += 1 }. # number of occurrences
     select { |k, v| k == id && v > 1 }.present? # detect duplicated
    raise KeyError, "key '#{id}' is ambiguous for #{self.class}"
  end

  @items.each do |i|
    if i.id.split('|').include?(id)
      return i
    end
  end
  raise KeyError, "not found key '#{id}' for #{self.class}"
end

#each(&block) ⇒ Object 



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# File 'lib/review/book/index.rb', line 80

def each(&block)
  @items.each(&block)
end

#item_type ⇒ Object 



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# File 'lib/review/book/index.rb', line 42

def item_type
  self.class.item_type
end

#key?(id) ⇒ Boolean Also known as: has_key?

Returns:

  • (Boolean) 


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# File 'lib/review/book/index.rb', line 84

def key?(id)
  @index.key?(id)
end

#number(id) ⇒ Object 



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# File 'lib/review/book/index.rb', line 76

def number(id)
  self[id].number.to_s
end