X-Git-Url: https://git.njae.me.uk/?a=blobdiff_plain;f=vendor%2Frails%2Factivesupport%2Flib%2Factive_support%2Fmultibyte%2Fchars.rb;fp=vendor%2Frails%2Factivesupport%2Flib%2Factive_support%2Fmultibyte%2Fchars.rb;h=0000000000000000000000000000000000000000;hb=36d9f3351a3b4e8159279445190e2287ffdea86c;hp=60f082bcc1f0446d6d3604b58105bab63d2db16d;hpb=913cf6054b1d29b5d2f5e620304af7ee77cc1f1f;p=feedcatcher.git diff --git a/vendor/rails/activesupport/lib/active_support/multibyte/chars.rb b/vendor/rails/activesupport/lib/active_support/multibyte/chars.rb deleted file mode 100644 index 60f082b..0000000 --- a/vendor/rails/activesupport/lib/active_support/multibyte/chars.rb +++ /dev/null @@ -1,701 +0,0 @@ -# encoding: utf-8 - -module ActiveSupport #:nodoc: - module Multibyte #:nodoc: - # Chars enables you to work transparently with UTF-8 encoding in the Ruby String class without having extensive - # knowledge about the encoding. A Chars object accepts a string upon initialization and proxies String methods in an - # encoding safe manner. All the normal String methods are also implemented on the proxy. - # - # String methods are proxied through the Chars object, and can be accessed through the +mb_chars+ method. Methods - # which would normally return a String object now return a Chars object so methods can be chained. - # - # "The Perfect String ".mb_chars.downcase.strip.normalize #=> "the perfect string" - # - # Chars objects are perfectly interchangeable with String objects as long as no explicit class checks are made. - # If certain methods do explicitly check the class, call +to_s+ before you pass chars objects to them. - # - # bad.explicit_checking_method "T".mb_chars.downcase.to_s - # - # The default Chars implementation assumes that the encoding of the string is UTF-8, if you want to handle different - # encodings you can write your own multibyte string handler and configure it through - # ActiveSupport::Multibyte.proxy_class. - # - # class CharsForUTF32 - # def size - # @wrapped_string.size / 4 - # end - # - # def self.accepts?(string) - # string.length % 4 == 0 - # end - # end - # - # ActiveSupport::Multibyte.proxy_class = CharsForUTF32 - class Chars - # Hangul character boundaries and properties - HANGUL_SBASE = 0xAC00 - HANGUL_LBASE = 0x1100 - HANGUL_VBASE = 0x1161 - HANGUL_TBASE = 0x11A7 - HANGUL_LCOUNT = 19 - HANGUL_VCOUNT = 21 - HANGUL_TCOUNT = 28 - HANGUL_NCOUNT = HANGUL_VCOUNT * HANGUL_TCOUNT - HANGUL_SCOUNT = 11172 - HANGUL_SLAST = HANGUL_SBASE + HANGUL_SCOUNT - HANGUL_JAMO_FIRST = 0x1100 - HANGUL_JAMO_LAST = 0x11FF - - # All the unicode whitespace - UNICODE_WHITESPACE = [ - (0x0009..0x000D).to_a, # White_Space # Cc [5] .. - 0x0020, # White_Space # Zs SPACE - 0x0085, # White_Space # Cc - 0x00A0, # White_Space # Zs NO-BREAK SPACE - 0x1680, # White_Space # Zs OGHAM SPACE MARK - 0x180E, # White_Space # Zs MONGOLIAN VOWEL SEPARATOR - (0x2000..0x200A).to_a, # White_Space # Zs [11] EN QUAD..HAIR SPACE - 0x2028, # White_Space # Zl LINE SEPARATOR - 0x2029, # White_Space # Zp PARAGRAPH SEPARATOR - 0x202F, # White_Space # Zs NARROW NO-BREAK SPACE - 0x205F, # White_Space # Zs MEDIUM MATHEMATICAL SPACE - 0x3000, # White_Space # Zs IDEOGRAPHIC SPACE - ].flatten.freeze - - # BOM (byte order mark) can also be seen as whitespace, it's a non-rendering character used to distinguish - # between little and big endian. This is not an issue in utf-8, so it must be ignored. - UNICODE_LEADERS_AND_TRAILERS = UNICODE_WHITESPACE + [65279] # ZERO-WIDTH NO-BREAK SPACE aka BOM - - # Returns a regular expression pattern that matches the passed Unicode codepoints - def self.codepoints_to_pattern(array_of_codepoints) #:nodoc: - array_of_codepoints.collect{ |e| [e].pack 'U*' }.join('|') - end - UNICODE_TRAILERS_PAT = /(#{codepoints_to_pattern(UNICODE_LEADERS_AND_TRAILERS)})+\Z/ - UNICODE_LEADERS_PAT = /\A(#{codepoints_to_pattern(UNICODE_LEADERS_AND_TRAILERS)})+/ - - # Borrowed from the Kconv library by Shinji KONO - (also as seen on the W3C site) - UTF8_PAT = /\A(?: - [\x00-\x7f] | - [\xc2-\xdf] [\x80-\xbf] | - \xe0 [\xa0-\xbf] [\x80-\xbf] | - [\xe1-\xef] [\x80-\xbf] [\x80-\xbf] | - \xf0 [\x90-\xbf] [\x80-\xbf] [\x80-\xbf] | - [\xf1-\xf3] [\x80-\xbf] [\x80-\xbf] [\x80-\xbf] | - \xf4 [\x80-\x8f] [\x80-\xbf] [\x80-\xbf] - )*\z/xn - - attr_reader :wrapped_string - alias to_s wrapped_string - alias to_str wrapped_string - - if '1.9'.respond_to?(:force_encoding) - # Creates a new Chars instance by wrapping _string_. - def initialize(string) - @wrapped_string = string - @wrapped_string.force_encoding(Encoding::UTF_8) unless @wrapped_string.frozen? - end - else - def initialize(string) #:nodoc: - @wrapped_string = string - end - end - - # Forward all undefined methods to the wrapped string. - def method_missing(method, *args, &block) - if method.to_s =~ /!$/ - @wrapped_string.__send__(method, *args, &block) - self - else - result = @wrapped_string.__send__(method, *args, &block) - result.kind_of?(String) ? chars(result) : result - end - end - - # Returns +true+ if _obj_ responds to the given method. Private methods are included in the search - # only if the optional second parameter evaluates to +true+. - def respond_to?(method, include_private=false) - super || @wrapped_string.respond_to?(method, include_private) || false - end - - # Enable more predictable duck-typing on String-like classes. See Object#acts_like?. - def acts_like_string? - true - end - - # Returns +true+ if the Chars class can and should act as a proxy for the string _string_. Returns - # +false+ otherwise. - def self.wants?(string) - $KCODE == 'UTF8' && consumes?(string) - end - - # Returns +true+ when the proxy class can handle the string. Returns +false+ otherwise. - def self.consumes?(string) - # Unpack is a little bit faster than regular expressions. - string.unpack('U*') - true - rescue ArgumentError - false - end - - include Comparable - - # Returns -1, 0 or +1 depending on whether the Chars object is to be sorted before, - # equal or after the object on the right side of the operation. It accepts any object that implements +to_s+. - # See String#<=> for more details. - # - # Example: - # 'é'.mb_chars <=> 'ü'.mb_chars #=> -1 - def <=>(other) - @wrapped_string <=> other.to_s - end - - # Returns a new Chars object containing the _other_ object concatenated to the string. - # - # Example: - # ('Café'.mb_chars + ' périferôl').to_s #=> "Café périferôl" - def +(other) - self << other - end - - # Like String#=~ only it returns the character offset (in codepoints) instead of the byte offset. - # - # Example: - # 'Café périferôl'.mb_chars =~ /ô/ #=> 12 - def =~(other) - translate_offset(@wrapped_string =~ other) - end - - # Works just like String#split, with the exception that the items in the resulting list are Chars - # instances instead of String. This makes chaining methods easier. - # - # Example: - # 'Café périferôl'.mb_chars.split(/é/).map { |part| part.upcase.to_s } #=> ["CAF", " P", "RIFERÔL"] - def split(*args) - @wrapped_string.split(*args).map { |i| i.mb_chars } - end - - # Inserts the passed string at specified codepoint offsets. - # - # Example: - # 'Café'.mb_chars.insert(4, ' périferôl').to_s #=> "Café périferôl" - def insert(offset, fragment) - unpacked = self.class.u_unpack(@wrapped_string) - unless offset > unpacked.length - @wrapped_string.replace( - self.class.u_unpack(@wrapped_string).insert(offset, *self.class.u_unpack(fragment)).pack('U*') - ) - else - raise IndexError, "index #{offset} out of string" - end - self - end - - # Returns +true+ if contained string contains _other_. Returns +false+ otherwise. - # - # Example: - # 'Café'.mb_chars.include?('é') #=> true - def include?(other) - # We have to redefine this method because Enumerable defines it. - @wrapped_string.include?(other) - end - - # Returns the position _needle_ in the string, counting in codepoints. Returns +nil+ if _needle_ isn't found. - # - # Example: - # 'Café périferôl'.mb_chars.index('ô') #=> 12 - # 'Café périferôl'.mb_chars.index(/\w/u) #=> 0 - def index(needle, offset=0) - index = @wrapped_string.index(needle, offset) - index ? (self.class.u_unpack(@wrapped_string.slice(0...index)).size) : nil - end - - # Like String#[]=, except instead of byte offsets you specify character offsets. - # - # Example: - # - # s = "Müller" - # s.mb_chars[2] = "e" # Replace character with offset 2 - # s - # #=> "Müeler" - # - # s = "Müller" - # s.mb_chars[1, 2] = "ö" # Replace 2 characters at character offset 1 - # s - # #=> "Möler" - def []=(*args) - replace_by = args.pop - # Indexed replace with regular expressions already works - if args.first.is_a?(Regexp) - @wrapped_string[*args] = replace_by - else - result = self.class.u_unpack(@wrapped_string) - if args[0].is_a?(Fixnum) - raise IndexError, "index #{args[0]} out of string" if args[0] >= result.length - min = args[0] - max = args[1].nil? ? min : (min + args[1] - 1) - range = Range.new(min, max) - replace_by = [replace_by].pack('U') if replace_by.is_a?(Fixnum) - elsif args.first.is_a?(Range) - raise RangeError, "#{args[0]} out of range" if args[0].min >= result.length - range = args[0] - else - needle = args[0].to_s - min = index(needle) - max = min + self.class.u_unpack(needle).length - 1 - range = Range.new(min, max) - end - result[range] = self.class.u_unpack(replace_by) - @wrapped_string.replace(result.pack('U*')) - end - end - - # Works just like String#rjust, only integer specifies characters instead of bytes. - # - # Example: - # - # "¾ cup".mb_chars.rjust(8).to_s - # #=> " ¾ cup" - # - # "¾ cup".mb_chars.rjust(8, " ").to_s # Use non-breaking whitespace - # #=> "   ¾ cup" - def rjust(integer, padstr=' ') - justify(integer, :right, padstr) - end - - # Works just like String#ljust, only integer specifies characters instead of bytes. - # - # Example: - # - # "¾ cup".mb_chars.rjust(8).to_s - # #=> "¾ cup " - # - # "¾ cup".mb_chars.rjust(8, " ").to_s # Use non-breaking whitespace - # #=> "¾ cup   " - def ljust(integer, padstr=' ') - justify(integer, :left, padstr) - end - - # Works just like String#center, only integer specifies characters instead of bytes. - # - # Example: - # - # "¾ cup".mb_chars.center(8).to_s - # #=> " ¾ cup " - # - # "¾ cup".mb_chars.center(8, " ").to_s # Use non-breaking whitespace - # #=> " ¾ cup  " - def center(integer, padstr=' ') - justify(integer, :center, padstr) - end - - # Strips entire range of Unicode whitespace from the right of the string. - def rstrip - chars(@wrapped_string.gsub(UNICODE_TRAILERS_PAT, '')) - end - - # Strips entire range of Unicode whitespace from the left of the string. - def lstrip - chars(@wrapped_string.gsub(UNICODE_LEADERS_PAT, '')) - end - - # Strips entire range of Unicode whitespace from the right and left of the string. - def strip - rstrip.lstrip - end - - # Returns the number of codepoints in the string - def size - self.class.u_unpack(@wrapped_string).size - end - alias_method :length, :size - - # Reverses all characters in the string. - # - # Example: - # 'Café'.mb_chars.reverse.to_s #=> 'éfaC' - def reverse - chars(self.class.u_unpack(@wrapped_string).reverse.pack('U*')) - end - - # Implements Unicode-aware slice with codepoints. Slicing on one point returns the codepoints for that - # character. - # - # Example: - # 'こんにちは'.mb_chars.slice(2..3).to_s #=> "にち" - def slice(*args) - if args.size > 2 - raise ArgumentError, "wrong number of arguments (#{args.size} for 1)" # Do as if we were native - elsif (args.size == 2 && !(args.first.is_a?(Numeric) || args.first.is_a?(Regexp))) - raise TypeError, "cannot convert #{args.first.class} into Integer" # Do as if we were native - elsif (args.size == 2 && !args[1].is_a?(Numeric)) - raise TypeError, "cannot convert #{args[1].class} into Integer" # Do as if we were native - elsif args[0].kind_of? Range - cps = self.class.u_unpack(@wrapped_string).slice(*args) - result = cps.nil? ? nil : cps.pack('U*') - elsif args[0].kind_of? Regexp - result = @wrapped_string.slice(*args) - elsif args.size == 1 && args[0].kind_of?(Numeric) - character = self.class.u_unpack(@wrapped_string)[args[0]] - result = character.nil? ? nil : [character].pack('U') - else - result = self.class.u_unpack(@wrapped_string).slice(*args).pack('U*') - end - result.nil? ? nil : chars(result) - end - alias_method :[], :slice - - # Like String#slice!, except instead of byte offsets you specify character offsets. - # - # Example: - # s = 'こんにちは' - # s.mb_chars.slice!(2..3).to_s #=> "にち" - # s #=> "こんは" - def slice!(*args) - slice = self[*args] - self[*args] = '' - slice - end - - # Returns the codepoint of the first character in the string. - # - # Example: - # 'こんにちは'.mb_chars.ord #=> 12371 - def ord - self.class.u_unpack(@wrapped_string)[0] - end - - # Convert characters in the string to uppercase. - # - # Example: - # 'Laurent, òu sont les tests?'.mb_chars.upcase.to_s #=> "LAURENT, ÒU SONT LES TESTS?" - def upcase - apply_mapping :uppercase_mapping - end - - # Convert characters in the string to lowercase. - # - # Example: - # 'VĚDA A VÝZKUM'.mb_chars.downcase.to_s #=> "věda a výzkum" - def downcase - apply_mapping :lowercase_mapping - end - - # Converts the first character to uppercase and the remainder to lowercase. - # - # Example: - # 'über'.mb_chars.capitalize.to_s #=> "Über" - def capitalize - (slice(0) || chars('')).upcase + (slice(1..-1) || chars('')).downcase - end - - # Returns the KC normalization of the string by default. NFKC is considered the best normalization form for - # passing strings to databases and validations. - # - # * str - The string to perform normalization on. - # * form - The form you want to normalize in. Should be one of the following: - # :c, :kc, :d, or :kd. Default is - # ActiveSupport::Multibyte.default_normalization_form - def normalize(form=ActiveSupport::Multibyte.default_normalization_form) - # See http://www.unicode.org/reports/tr15, Table 1 - codepoints = self.class.u_unpack(@wrapped_string) - chars(case form - when :d - self.class.reorder_characters(self.class.decompose_codepoints(:canonical, codepoints)) - when :c - self.class.compose_codepoints(self.class.reorder_characters(self.class.decompose_codepoints(:canonical, codepoints))) - when :kd - self.class.reorder_characters(self.class.decompose_codepoints(:compatability, codepoints)) - when :kc - self.class.compose_codepoints(self.class.reorder_characters(self.class.decompose_codepoints(:compatability, codepoints))) - else - raise ArgumentError, "#{form} is not a valid normalization variant", caller - end.pack('U*')) - end - - # Performs canonical decomposition on all the characters. - # - # Example: - # 'é'.length #=> 2 - # 'é'.mb_chars.decompose.to_s.length #=> 3 - def decompose - chars(self.class.decompose_codepoints(:canonical, self.class.u_unpack(@wrapped_string)).pack('U*')) - end - - # Performs composition on all the characters. - # - # Example: - # 'é'.length #=> 3 - # 'é'.mb_chars.compose.to_s.length #=> 2 - def compose - chars(self.class.compose_codepoints(self.class.u_unpack(@wrapped_string)).pack('U*')) - end - - # Returns the number of grapheme clusters in the string. - # - # Example: - # 'क्षि'.mb_chars.length #=> 4 - # 'क्षि'.mb_chars.g_length #=> 3 - def g_length - self.class.g_unpack(@wrapped_string).length - end - - # Replaces all ISO-8859-1 or CP1252 characters by their UTF-8 equivalent resulting in a valid UTF-8 string. - def tidy_bytes - chars(self.class.tidy_bytes(@wrapped_string)) - end - - %w(lstrip rstrip strip reverse upcase downcase tidy_bytes capitalize).each do |method| - define_method("#{method}!") do |*args| - unless args.nil? - @wrapped_string = send(method, *args).to_s - else - @wrapped_string = send(method).to_s - end - self - end - end - - class << self - - # Unpack the string at codepoints boundaries. Raises an EncodingError when the encoding of the string isn't - # valid UTF-8. - # - # Example: - # Chars.u_unpack('Café') #=> [67, 97, 102, 233] - def u_unpack(string) - begin - string.unpack 'U*' - rescue ArgumentError - raise EncodingError, 'malformed UTF-8 character' - end - end - - # Detect whether the codepoint is in a certain character class. Returns +true+ when it's in the specified - # character class and +false+ otherwise. Valid character classes are: :cr, :lf, :l, - # :v, :lv, :lvt and :t. - # - # Primarily used by the grapheme cluster support. - def in_char_class?(codepoint, classes) - classes.detect { |c| UCD.boundary[c] === codepoint } ? true : false - end - - # Unpack the string at grapheme boundaries. Returns a list of character lists. - # - # Example: - # Chars.g_unpack('क्षि') #=> [[2325, 2381], [2359], [2367]] - # Chars.g_unpack('Café') #=> [[67], [97], [102], [233]] - def g_unpack(string) - codepoints = u_unpack(string) - unpacked = [] - pos = 0 - marker = 0 - eoc = codepoints.length - while(pos < eoc) - pos += 1 - previous = codepoints[pos-1] - current = codepoints[pos] - if ( - # CR X LF - one = ( previous == UCD.boundary[:cr] and current == UCD.boundary[:lf] ) or - # L X (L|V|LV|LVT) - two = ( UCD.boundary[:l] === previous and in_char_class?(current, [:l,:v,:lv,:lvt]) ) or - # (LV|V) X (V|T) - three = ( in_char_class?(previous, [:lv,:v]) and in_char_class?(current, [:v,:t]) ) or - # (LVT|T) X (T) - four = ( in_char_class?(previous, [:lvt,:t]) and UCD.boundary[:t] === current ) or - # X Extend - five = (UCD.boundary[:extend] === current) - ) - else - unpacked << codepoints[marker..pos-1] - marker = pos - end - end - unpacked - end - - # Reverse operation of g_unpack. - # - # Example: - # Chars.g_pack(Chars.g_unpack('क्षि')) #=> 'क्षि' - def g_pack(unpacked) - (unpacked.flatten).pack('U*') - end - - def padding(padsize, padstr=' ') #:nodoc: - if padsize != 0 - new(padstr * ((padsize / u_unpack(padstr).size) + 1)).slice(0, padsize) - else - '' - end - end - - # Re-order codepoints so the string becomes canonical. - def reorder_characters(codepoints) - length = codepoints.length- 1 - pos = 0 - while pos < length do - cp1, cp2 = UCD.codepoints[codepoints[pos]], UCD.codepoints[codepoints[pos+1]] - if (cp1.combining_class > cp2.combining_class) && (cp2.combining_class > 0) - codepoints[pos..pos+1] = cp2.code, cp1.code - pos += (pos > 0 ? -1 : 1) - else - pos += 1 - end - end - codepoints - end - - # Decompose composed characters to the decomposed form. - def decompose_codepoints(type, codepoints) - codepoints.inject([]) do |decomposed, cp| - # if it's a hangul syllable starter character - if HANGUL_SBASE <= cp and cp < HANGUL_SLAST - sindex = cp - HANGUL_SBASE - ncp = [] # new codepoints - ncp << HANGUL_LBASE + sindex / HANGUL_NCOUNT - ncp << HANGUL_VBASE + (sindex % HANGUL_NCOUNT) / HANGUL_TCOUNT - tindex = sindex % HANGUL_TCOUNT - ncp << (HANGUL_TBASE + tindex) unless tindex == 0 - decomposed.concat ncp - # if the codepoint is decomposable in with the current decomposition type - elsif (ncp = UCD.codepoints[cp].decomp_mapping) and (!UCD.codepoints[cp].decomp_type || type == :compatability) - decomposed.concat decompose_codepoints(type, ncp.dup) - else - decomposed << cp - end - end - end - - # Compose decomposed characters to the composed form. - def compose_codepoints(codepoints) - pos = 0 - eoa = codepoints.length - 1 - starter_pos = 0 - starter_char = codepoints[0] - previous_combining_class = -1 - while pos < eoa - pos += 1 - lindex = starter_char - HANGUL_LBASE - # -- Hangul - if 0 <= lindex and lindex < HANGUL_LCOUNT - vindex = codepoints[starter_pos+1] - HANGUL_VBASE rescue vindex = -1 - if 0 <= vindex and vindex < HANGUL_VCOUNT - tindex = codepoints[starter_pos+2] - HANGUL_TBASE rescue tindex = -1 - if 0 <= tindex and tindex < HANGUL_TCOUNT - j = starter_pos + 2 - eoa -= 2 - else - tindex = 0 - j = starter_pos + 1 - eoa -= 1 - end - codepoints[starter_pos..j] = (lindex * HANGUL_VCOUNT + vindex) * HANGUL_TCOUNT + tindex + HANGUL_SBASE - end - starter_pos += 1 - starter_char = codepoints[starter_pos] - # -- Other characters - else - current_char = codepoints[pos] - current = UCD.codepoints[current_char] - if current.combining_class > previous_combining_class - if ref = UCD.composition_map[starter_char] - composition = ref[current_char] - else - composition = nil - end - unless composition.nil? - codepoints[starter_pos] = composition - starter_char = composition - codepoints.delete_at pos - eoa -= 1 - pos -= 1 - previous_combining_class = -1 - else - previous_combining_class = current.combining_class - end - else - previous_combining_class = current.combining_class - end - if current.combining_class == 0 - starter_pos = pos - starter_char = codepoints[pos] - end - end - end - codepoints - end - - # Replaces all ISO-8859-1 or CP1252 characters by their UTF-8 equivalent resulting in a valid UTF-8 string. - def tidy_bytes(string) - string.split(//u).map do |c| - c.force_encoding(Encoding::ASCII) if c.respond_to?(:force_encoding) - - if !UTF8_PAT.match(c) - n = c.unpack('C')[0] - n < 128 ? n.chr : - n < 160 ? [UCD.cp1252[n] || n].pack('U') : - n < 192 ? "\xC2" + n.chr : "\xC3" + (n-64).chr - else - c - end - end.join - end - end - - protected - - def translate_offset(byte_offset) #:nodoc: - return nil if byte_offset.nil? - return 0 if @wrapped_string == '' - chunk = @wrapped_string[0..byte_offset] - begin - begin - chunk.unpack('U*').length - 1 - rescue ArgumentError => e - chunk = @wrapped_string[0..(byte_offset+=1)] - # Stop retrying at the end of the string - raise e unless byte_offset < chunk.length - # We damaged a character, retry - retry - end - # Catch the ArgumentError so we can throw our own - rescue ArgumentError - raise EncodingError, 'malformed UTF-8 character' - end - end - - def justify(integer, way, padstr=' ') #:nodoc: - raise ArgumentError, "zero width padding" if padstr.length == 0 - padsize = integer - size - padsize = padsize > 0 ? padsize : 0 - case way - when :right - result = @wrapped_string.dup.insert(0, self.class.padding(padsize, padstr)) - when :left - result = @wrapped_string.dup.insert(-1, self.class.padding(padsize, padstr)) - when :center - lpad = self.class.padding((padsize / 2.0).floor, padstr) - rpad = self.class.padding((padsize / 2.0).ceil, padstr) - result = @wrapped_string.dup.insert(0, lpad).insert(-1, rpad) - end - chars(result) - end - - def apply_mapping(mapping) #:nodoc: - chars(self.class.u_unpack(@wrapped_string).map do |codepoint| - cp = UCD.codepoints[codepoint] - if cp and (ncp = cp.send(mapping)) and ncp > 0 - ncp - else - codepoint - end - end.pack('U*')) - end - - def chars(string) #:nodoc: - self.class.new(string) - end - end - end -end