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Contents
# frozen_string_literal: true
module UltimateLyrics
class Field
DATA = {
'artist' => %w[artist lower],
'artist2' => %w[artist lower nospace],
'album' => %w[album lower],
'album2' => %w[album lower nospace],
'title' => %w[title lower],
'Artist' => %w[artist],
'Album' => %w[album],
'ARTIST' => %w[artist upper],
'year' => %w[year pretty],
'Title' => %w[title],
'Title2' => %w[title titlecase],
'a' => %w[artist firstchar],
'track' => %w[track number]
}.freeze
BEGIN_DELIMITER = '{'
END_DELIMITER = '}'
class << self
# @return [Array<UltimateLyrics::Field>]
def all
@all ||= DATA.map do |name, modifiers|
source_attr = modifiers.shift
new(name, source_attr, modifiers)
end
end
# @return [UltimateLyrics::Field]
def by_name(name)
all.find { |field| field.name == name } ||
raise("No field with name \"#{name}\" (Available: #{all.values})")
end
# @return [Array<UltimateLyrics::Field>]
def from_string(string)
names_from_string(string).map { |name| by_name(name) }
end
# @return [Array<String>]
def names_from_string(string)
string.scan(/#{::Regexp.quote(BEGIN_DELIMITER)}[^\}]+#{::Regexp.quote(END_DELIMITER)}/)
.map { |s| s.delimited_inner(BEGIN_DELIMITER, END_DELIMITER) }
end
end
common_constructor :name, :source_attribute, :modifiers
def apply(string, value)
string.gsub(apply_pattern, value)
end
def apply_pattern
/#{::Regexp.quote(BEGIN_DELIMITER)}#{::Regexp.quote(name)}#{::Regexp.quote(END_DELIMITER)}/
end
def value(value)
modifiers.inject(value.to_s) { |a, e| send(e, a) }
end
def to_s
name
end
private
def firstchar(string)
string[0]
end
def lower(string)
string.downcase
end
def nospace(string)
string.gsub(/\s/, '')
end
end
end
Version data entries
10 entries across 10 versions & 2 rubygems