Contents

# frozen_string_literal: true

require 'pathname'
require 'date_named_file/template'
require 'date_named_file/dated_file'


module DateNamedFile
  # The instantiation of a template over a specific directory. This allows
  # us to find out which files that match the template actually exist,
  # extract dates from them, etc.
  class Directory < DateNamedFile::Template

    include Enumerable
    # @return [Pathname]
    attr_accessor :dir_path, :matching_files

    # @param [DateNamedFile::Template] template The file template
    # @param [Pathname, String] path The path to the directory
    def initialize(template, path)
      @dir_path = Pathname.new(path).realdirpath
      raise ArgumentError.new("Directory '#{path}' does not exist") unless @dir_path.exist?
      raise ArgumentError.new("'#{path}' isn't a directory") unless @dir_path.directory?
      super((@dir_path + template.template_string).to_s)
      @matching_files = @dir_path.children.sort.select{|x| self.match? x.to_s}.map{|x| DatedFile.from_filename(self,x.to_s)}
    end

    alias_method :no_existence_check_at, :at

    def at(date_ish)
      if has_file_for_date?(date_ish)
        no_existence_check_at(date_ish)
      else
        MissingFile.new(self, date_ish)
      end
    end

    alias_method :on, :at


    def since(date_ish)
      self.select {|f| f >= date_ish}
    end

    def after(date_ish)
      self.select {|f| f > date_ish}
    end

    def last
      @matching_files.last
    end


    # Does this directory have a file for the given date?
    # @param [<anything date_ish>] date_ish (see #forgiving_dateify)
    # @return [Boolean]
    def has_file_for_date?(date_ish)
      target = self.no_existence_check_at(date_ish)
      (@dir_path + target).exist?
    end

    alias_method :has?, :has_file_for_date?


    # Yield matching files for each
    def each
      return enum_for(:each) unless block_given?
      @matching_files.each {|f| yield f}
    end


  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
date_named_file-0.1.1	lib/date_named_file/directory.rb
date_named_file-0.1.0	lib/date_named_file/directory.rb