Class: Alexandria::LibraryStore

Inherits:
Object
  • Object
show all
Includes:
Logging, GetText
Defined in:
lib/alexandria/library_store.rb

Constant Summary collapse

FIX_BIGNUM_REGEX = 
%r{loaned_since:\s*(!ruby/object:Bignum\s*)?(\d+)\n}.freeze

Instance Method Summary collapse

Methods included from Logging

included, #log

Constructor Details

#initialize(dir) ⇒ LibraryStore

Returns a new instance of LibraryStore.



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# File 'lib/alexandria/library_store.rb', line 17

def initialize(dir)
  @dir = dir
end

Instance Method Details

#library_dir ⇒ Object 



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# File 'lib/alexandria/library_store.rb', line 173

def library_dir
  @dir
end

#load_all_libraries ⇒ Object 



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# File 'lib/alexandria/library_store.rb', line 21

def load_all_libraries
  a = []
  begin
    Dir.entries(library_dir).each do |file|
      # Skip hidden files.
      next if file.start_with?(".")
      # Skip non-directory files.
      next unless File.stat(File.join(library_dir, file)).directory?

      a << load_library(file)
    end
  rescue Errno::ENOENT
    FileUtils.mkdir_p(library_dir)
  end
  # Create the default library if there is no library yet.

  a << load_library(_("My Library")) if a.empty?

  a
end

#load_all_smart_libraries ⇒ Object 



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# File 'lib/alexandria/library_store.rb', line 146

def load_all_smart_libraries
  a = []
  begin
    # Deserialize smart libraries.
    Dir.chdir(smart_library_dir) do
      Dir["*" + SmartLibrary::EXT].each do |filename|
        # Skip non-regular files.
        next unless File.stat(filename).file?

        text = File.read(filename)
        hash = YAML.safe_load(text, permitted_classes: [Symbol])
        smart_library = SmartLibrary.from_hash(hash, self)
        a << smart_library
      end
    end
  rescue Errno::ENOENT
    # First run and no smart libraries yet? Provide some default
    # ones.
    SmartLibrary.sample_smart_libraries(self).each do |smart_library|
      smart_library.save
      a << smart_library
    end
  end
  a.each(&:refilter)
  a
end

#load_library(name) ⇒ Object 



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# File 'lib/alexandria/library_store.rb', line 42

def load_library(name)
  test = [0, nil]
  ruined_books = []
  library = Library.new(name, self)
  FileUtils.mkdir_p(library.path)
  Dir.chdir(library.path) do
    Dir["*" + Library::EXT[:book]].sort.each do |filename|
      test[1] = filename if (test[0]).zero?

      unless File.size? test[1]
        log.warn { "Book file #{test[1]} was empty" }
        md = /([\dxX]{10,13})#{Library::EXT[:book]}/.match(filename)
        if md
          file_isbn = md[1]
          ruined_books << [nil, file_isbn, library]
        else
          log.warn { "Filename #{filename} does not contain an ISBN" }
          # TODO: delete this file...
        end
        next
      end
      book = regularize_book_from_yaml(test[1])
      old_isbn = book.isbn
      old_pub_year = book.publishing_year
      begin
        raise format(_("Not a book: %<book>s"), book.inspect) unless book.is_a?(Book)

        ean = Library.canonicalise_ean(book.isbn)
        book.isbn = ean if ean

        unless book.publishing_year.nil?
          book.publishing_year = book.publishing_year.to_i
        end

        # Or if isbn has changed
        unless book.isbn == old_isbn
          raise format(_("%<file>s isbn is not okay"), file: test[1])
        end

        # Re-save book if Alexandria::DATA_VERSION changes
        unless book.version == Alexandria::DATA_VERSION
          raise format(_("%<file>s version is not okay"), file: test[1])
        end

        # Or if publishing year has changed
        unless book.publishing_year == old_pub_year
          raise format(_("%<file>s pub year is not okay"), file: test[1])
        end

        # ruined_books << [book, book.isbn, library]
        book.library = library.name

        ## TODO copy cover image file, if necessary
        # due to #26909 cover files for books without ISBN are re-saved as
        # "g#{ident}.cover"
        if (book.isbn.nil? || book.isbn.empty?) && File.exist?(library.old_cover(book))
          log.debug do
            "#{library.name}; book #{book.title} has no ISBN, fixing cover image"
          end
          FileUtils::Verbose.mv(library.old_cover(book), library.cover(book))
        end

        library << book
      rescue StandardError
        book.version = Alexandria::DATA_VERSION
        savedfilename = library.simple_save(book)
        test[0] = test[0] + 1
        test[1] = savedfilename

        # retries the Dir.each block...
        # but gives up after three tries
        redo unless test[0] > 2
      else
        test = [0, nil]
      end
    end

    # Since 0.4.0 the cover files '_small.jpg' and
    # '_medium.jpg' have been deprecated for a single medium
    # cover file named '.cover'.

    Dir["*" + "_medium.jpg"].each do |medium_cover|
      FileUtils.mv(medium_cover,
                   medium_cover.sub(/_medium\.jpg$/,
                                    Library::EXT[:cover]))
    end

    Dir["*" + Library::EXT[:cover]].each do |cover|
      next if cover[0] == "g"

      md = /(.+)\.cover/.match(cover)
      ean = Library.canonicalise_ean(md[1]) || md[1]
      unless cover == ean + Library::EXT[:cover]
        FileUtils.mv(cover, ean + Library::EXT[:cover])
      end
    end

    FileUtils.rm_f(Dir["*_small.jpg"])
  end
  library.ruined_books = ruined_books

  library
end

#smart_library_dir ⇒ Object 



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# File 'lib/alexandria/library_store.rb', line 177

def smart_library_dir
  File.join(@dir, ".smart_libraries")
end