diff options
Diffstat (limited to 'activesupport/lib/active_support/multibyte')
| -rw-r--r-- | activesupport/lib/active_support/multibyte/chars.rb | 17 | ||||
| -rw-r--r-- | activesupport/lib/active_support/multibyte/unicode.rb | 62 |
2 files changed, 56 insertions, 23 deletions
diff --git a/activesupport/lib/active_support/multibyte/chars.rb b/activesupport/lib/active_support/multibyte/chars.rb index 3c0cf9f137..707cf200b5 100644 --- a/activesupport/lib/active_support/multibyte/chars.rb +++ b/activesupport/lib/active_support/multibyte/chars.rb @@ -1,4 +1,3 @@ -# encoding: utf-8 require 'active_support/json' require 'active_support/core_ext/string/access' require 'active_support/core_ext/string/behavior' @@ -86,10 +85,20 @@ module ActiveSupport #:nodoc: @wrapped_string.split(*args).map { |i| self.class.new(i) } end - # Works like like <tt>String#slice!</tt>, but returns an instance of - # Chars, or nil if the string was not modified. + # Works like <tt>String#slice!</tt>, but returns an instance of + # Chars, or nil if the string was not modified. The string will not be + # modified if the range given is out of bounds + # + # string = 'Welcome' + # string.mb_chars.slice!(3) # => #<ActiveSupport::Multibyte::Chars:0x000000038109b8 @wrapped_string="c"> + # string # => 'Welome' + # string.mb_chars.slice!(0..3) # => #<ActiveSupport::Multibyte::Chars:0x00000002eb80a0 @wrapped_string="Welo"> + # string # => 'me' def slice!(*args) - chars(@wrapped_string.slice!(*args)) + string_sliced = @wrapped_string.slice!(*args) + if string_sliced + chars(string_sliced) + end end # Reverses all characters in the string. diff --git a/activesupport/lib/active_support/multibyte/unicode.rb b/activesupport/lib/active_support/multibyte/unicode.rb index 35efebc65f..72b20fff06 100644 --- a/activesupport/lib/active_support/multibyte/unicode.rb +++ b/activesupport/lib/active_support/multibyte/unicode.rb @@ -1,4 +1,3 @@ -# encoding: utf-8 module ActiveSupport module Multibyte module Unicode @@ -11,7 +10,7 @@ module ActiveSupport NORMALIZATION_FORMS = [:c, :kc, :d, :kd] # The Unicode version that is supported by the implementation - UNICODE_VERSION = '7.0.0' + UNICODE_VERSION = '8.0.0' # The default normalization used for operations that require # normalization. It can be set to any of the normalizations @@ -58,7 +57,7 @@ module ActiveSupport # 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('|') + array_of_codepoints.collect{ |e| [e].pack 'U*'.freeze }.join('|'.freeze) end TRAILERS_PAT = /(#{codepoints_to_pattern(LEADERS_AND_TRAILERS)})+\Z/u LEADERS_PAT = /\A(#{codepoints_to_pattern(LEADERS_AND_TRAILERS)})+/u @@ -88,19 +87,44 @@ module ActiveSupport pos += 1 previous = codepoints[pos-1] current = codepoints[pos] - if ( - # CR X LF - ( previous == database.boundary[:cr] and current == database.boundary[:lf] ) or - # L X (L|V|LV|LVT) - ( database.boundary[:l] === previous and in_char_class?(current, [:l,:v,:lv,:lvt]) ) or - # (LV|V) X (V|T) - ( in_char_class?(previous, [:lv,:v]) and in_char_class?(current, [:v,:t]) ) or - # (LVT|T) X (T) - ( in_char_class?(previous, [:lvt,:t]) and database.boundary[:t] === current ) or - # X Extend - (database.boundary[:extend] === current) - ) - else + + should_break = + # GB3. CR X LF + if previous == database.boundary[:cr] and current == database.boundary[:lf] + false + # GB4. (Control|CR|LF) ÷ + elsif previous and in_char_class?(previous, [:control,:cr,:lf]) + true + # GB5. ÷ (Control|CR|LF) + elsif in_char_class?(current, [:control,:cr,:lf]) + true + # GB6. L X (L|V|LV|LVT) + elsif database.boundary[:l] === previous and in_char_class?(current, [:l,:v,:lv,:lvt]) + false + # GB7. (LV|V) X (V|T) + elsif in_char_class?(previous, [:lv,:v]) and in_char_class?(current, [:v,:t]) + false + # GB8. (LVT|T) X (T) + elsif in_char_class?(previous, [:lvt,:t]) and database.boundary[:t] === current + false + # GB8a. Regional_Indicator X Regional_Indicator + elsif database.boundary[:regional_indicator] === previous and database.boundary[:regional_indicator] === current + false + # GB9. X Extend + elsif database.boundary[:extend] === current + false + # GB9a. X SpacingMark + elsif database.boundary[:spacingmark] === current + false + # GB9b. Prepend X + elsif database.boundary[:prepend] === previous + false + # GB10. Any ÷ Any + else + true + end + + if should_break unpacked << codepoints[marker..pos-1] marker = pos end @@ -257,7 +281,7 @@ module ActiveSupport # * <tt>string</tt> - The string to perform normalization on. # * <tt>form</tt> - The form you want to normalize in. Should be one of # the following: <tt>:c</tt>, <tt>:kc</tt>, <tt>:d</tt>, or <tt>:kd</tt>. - # Default is ActiveSupport::Multibyte.default_normalization_form. + # Default is ActiveSupport::Multibyte::Unicode.default_normalization_form. def normalize(string, form=nil) form ||= @default_normalization_form # See http://www.unicode.org/reports/tr15, Table 1 @@ -273,7 +297,7 @@ module ActiveSupport compose(reorder_characters(decompose(:compatibility, codepoints))) else raise ArgumentError, "#{form} is not a valid normalization variant", caller - end.pack('U*') + end.pack('U*'.freeze) end def downcase(string) @@ -338,7 +362,7 @@ module ActiveSupport end # Redefine the === method so we can write shorter rules for grapheme cluster breaks - @boundary.each do |k,_| + @boundary.each_key do |k| @boundary[k].instance_eval do def ===(other) detect { |i| i === other } ? true : false |