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Contents
# encoding: UTF-8
module Sterile
class << self
def transmogrify(string, &block)
raise "No block given" unless block_given?
result = ""
string.unpack("U*").each do |codepoint|
cg = codepoint >> 8
cp = codepoint & 0xFF
begin
mapping = Array(codepoints_data[cg][cp])
result << yield(mapping, codepoint)
rescue
end
end
result
end
# Transliterate Unicode [and accented ASCII] characters to their plain-text
# ASCII equivalents. This is based on data from the stringex gem (https://github.com/rsl/stringex)
# which is in turn a port of Perl's Unidecode and ostensibly provides
# superior results to iconv. The optical conversion data is based on work
# by Eric Boehs at https://github.com/ericboehs/to_slug
# Passing an option of :optical => true will prefer optical mapping instead
# of more pedantic matches.
#
# "ýůçký".transliterate # => "yucky"
#
def transliterate(string, options = {})
options = {
:optical => false
}.merge!(options)
if options[:optical]
transmogrify(string) do |mapping, codepoint|
mapping[1] || mapping[0] || ""
end
else
transmogrify(string) do |mapping, codepoint|
mapping[0] || mapping[1] || ""
end
end
end
alias_method :to_ascii, :transliterate
private
# Lazy load codepoints data
#
def codepoints_data
@codepoints_data ||= begin
require "sterile/data/codepoints_data"
Data.codepoints_data
end
end
end # class << self
end # module Sterile
Version data entries
12 entries across 12 versions & 2 rubygems