module MIME::Types::Columnar

MIME::Types::Columnar is used to extend a MIME::Types container to load data by columns instead of from JSON or YAML. Column loads of MIME types loaded through the columnar store are synchronized with a Mutex.

MIME::Types::Columnar is not intended to be used directly, but will be added to an instance of MIME::Types when it is loaded with MIME::Types::Loader#load_columnar.

Private Instance Methods

arr(line) click to toggle source
# File lib/mime/types/columnar.rb, line 137
def arr(line)
  if line == '-'.freeze
    []
  else
    line.split('|'.freeze).flatten.compact.uniq
  end
end
bool(line) click to toggle source
# File lib/mime/types/columnar.rb, line 145
def bool(line)
  line == '1'.freeze ? true : false
end
dict(line) click to toggle source
# File lib/mime/types/columnar.rb, line 125
def dict(line)
  if line == '-'.freeze
    {}
  else
    line.split('|'.freeze).each_with_object({}) { |l, h|
      k, v = l.split('^'.freeze)
      v = [ nil ] if v.empty?
      h[k] = v
    }
  end
end
each_file_line(name, lookup = true) { |type, line| ... } click to toggle source
# File lib/mime/types/columnar.rb, line 41
def each_file_line(name, lookup = true)
  LOAD_MUTEX.synchronize do
    next if @__attributes__.include?(name)

    File.open(File.join(@__root__, "mime.#{name}.column"), 'r:UTF-8') do |f|
      i = -1

      f.each_line do |line|
        line.chomp!

        if lookup
          type = @__mime_data__[i += 1] or next
          yield type, line
        else
          yield line
        end
      end
    end

    @__attributes__ << name
  end
end
load_docs() click to toggle source
# File lib/mime/types/columnar.rb, line 72
def load_docs
  each_file_line('docs') do |type, line|
    type.docs = arr(line)
  end
end
load_encoding() click to toggle source
# File lib/mime/types/columnar.rb, line 64
def load_encoding
  pool = {}
  each_file_line('encoding') do |type, line|
    line.freeze
    type.encoding = (pool[line] ||= line)
  end
end
load_friendly() click to toggle source
# File lib/mime/types/columnar.rb, line 112
def load_friendly
  each_file_line('friendly') { |type, line|
    v = dict(line)
    type.friendly = v.empty? ? nil : v
  }
end
load_obsolete() click to toggle source
# File lib/mime/types/columnar.rb, line 78
def load_obsolete
  each_file_line('obsolete') do |type, line|
    type.obsolete = bool(line)
  end
end
load_references() click to toggle source
# File lib/mime/types/columnar.rb, line 84
def load_references
  each_file_line('references') do |type, line|
    type.instance_variable_set(:@references, arr(line))
  end
end
load_registered() click to toggle source
# File lib/mime/types/columnar.rb, line 90
def load_registered
  each_file_line('registered') do |type, line|
    type.registered = bool(line)
  end
end
load_signature() click to toggle source
# File lib/mime/types/columnar.rb, line 96
def load_signature
  each_file_line('signature') do |type, line|
    type.signature = bool(line)
  end
end
load_system() click to toggle source
# File lib/mime/types/columnar.rb, line 102
def load_system
  each_file_line('system') do |type, line|
    type.system = (line unless line == '-'.freeze)
  end
end
load_use_instead() click to toggle source
# File lib/mime/types/columnar.rb, line 119
def load_use_instead
  each_file_line('use_instead') do |type, line|
    type.use_instead = (line unless line == '-'.freeze)
  end
end
load_xrefs() click to toggle source
# File lib/mime/types/columnar.rb, line 108
def load_xrefs
  each_file_line('xrefs') { |type, line| type.xrefs = dict(line) }
end