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-rw-r--r--activesupport/lib/active_support/inflector/inflections.rb2
-rw-r--r--activesupport/lib/active_support/inflector/methods.rb1
-rw-r--r--activesupport/lib/active_support/inflector/transliterate.rb27
3 files changed, 26 insertions, 4 deletions
diff --git a/activesupport/lib/active_support/inflector/inflections.rb b/activesupport/lib/active_support/inflector/inflections.rb
index 88cdd99dbd..efee74a1df 100644
--- a/activesupport/lib/active_support/inflector/inflections.rb
+++ b/activesupport/lib/active_support/inflector/inflections.rb
@@ -2,7 +2,6 @@
require "concurrent/map"
require "active_support/i18n"
-require "active_support/deprecation"
module ActiveSupport
module Inflector
@@ -230,7 +229,6 @@ module ActiveSupport
end
private
-
def define_acronym_regex_patterns
@acronym_regex = @acronyms.empty? ? /(?=a)b/ : /#{@acronyms.values.join("|")}/
@acronyms_camelize_regex = /^(?:#{@acronym_regex}(?=\b|[A-Z_])|\w)/
diff --git a/activesupport/lib/active_support/inflector/methods.rb b/activesupport/lib/active_support/inflector/methods.rb
index ee193add6f..18f3f53879 100644
--- a/activesupport/lib/active_support/inflector/methods.rb
+++ b/activesupport/lib/active_support/inflector/methods.rb
@@ -359,7 +359,6 @@ module ActiveSupport
end
private
-
# Mounts a regular expression, returned as a string to ease interpolation,
# that will match part by part the given constant.
#
diff --git a/activesupport/lib/active_support/inflector/transliterate.rb b/activesupport/lib/active_support/inflector/transliterate.rb
index ec6e9ccb59..0751f8a3ad 100644
--- a/activesupport/lib/active_support/inflector/transliterate.rb
+++ b/activesupport/lib/active_support/inflector/transliterate.rb
@@ -56,14 +56,39 @@ module ActiveSupport
#
# transliterate('Jürgen', locale: :de)
# # => "Juergen"
+ #
+ # Transliteration is restricted to UTF-8, US-ASCII and GB18030 strings
+ # Other encodings will raise an ArgumentError.
def transliterate(string, replacement = "?", locale: nil)
raise ArgumentError, "Can only transliterate strings. Received #{string.class.name}" unless string.is_a?(String)
- I18n.transliterate(
+ allowed_encodings = [Encoding::UTF_8, Encoding::US_ASCII, Encoding::GB18030]
+ raise ArgumentError, "Can not transliterate strings with #{string.encoding} encoding" unless allowed_encodings.include?(string.encoding)
+
+ input_encoding = string.encoding
+
+ # US-ASCII is a subset of UTF-8 so we'll force encoding as UTF-8 if
+ # US-ASCII is given. This way we can let tidy_bytes handle the string
+ # in the same way as we do for UTF-8
+ string.force_encoding(Encoding::UTF_8) if string.encoding == Encoding::US_ASCII
+
+ # GB18030 is Unicode compatible but is not a direct mapping so needs to be
+ # transcoded. Using invalid/undef :replace will result in loss of data in
+ # the event of invalid characters, but since tidy_bytes will replace
+ # invalid/undef with a "?" we're safe to do the same beforehand
+ string.encode!(Encoding::UTF_8, invalid: :replace, undef: :replace) if string.encoding == Encoding::GB18030
+
+ transliterated = I18n.transliterate(
ActiveSupport::Multibyte::Unicode.tidy_bytes(string).unicode_normalize(:nfc),
replacement: replacement,
locale: locale
)
+
+ # Restore the string encoding of the input if it was not UTF-8.
+ # Apply invalid/undef :replace as tidy_bytes does
+ transliterated.encode!(input_encoding, invalid: :replace, undef: :replace) if input_encoding != transliterated.encoding
+
+ transliterated
end
# Replaces special characters in a string so that it may be used as part of