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-rw-r--r--activesupport/CHANGELOG.md7
-rw-r--r--activesupport/lib/active_support/json/encoding.rb8
-rw-r--r--activesupport/test/json/encoding_test.rb19
3 files changed, 24 insertions, 10 deletions
diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index a3e1854ada..88707d7edb 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -1,5 +1,12 @@
## Rails 3.2.10 (unreleased)
+* Remove surrogate unicode character encoding from ActiveSupport::JSON.encode
+ The encoding scheme was broken for unicode characters outside the basic
+ multilingual plane; since json is assumed to be UTF-8, and we already force the
+ encoding to UTF-8 simply pass through the un-encoded characters.
+
+ *Brett Carter*
+
* Fix mocha v0.13.0 compatibility. *James Mead*
* `#as_json` isolates options when encoding a hash. [Backport #8185]
diff --git a/activesupport/lib/active_support/json/encoding.rb b/activesupport/lib/active_support/json/encoding.rb
index bd2f909ca9..a50e6524c6 100644
--- a/activesupport/lib/active_support/json/encoding.rb
+++ b/activesupport/lib/active_support/json/encoding.rb
@@ -122,13 +122,7 @@ module ActiveSupport
if string.respond_to?(:force_encoding)
string = string.encode(::Encoding::UTF_8, :undef => :replace).force_encoding(::Encoding::BINARY)
end
- json = string.
- gsub(escape_regex) { |s| ESCAPED_CHARS[s] }.
- gsub(/([\xC0-\xDF][\x80-\xBF]|
- [\xE0-\xEF][\x80-\xBF]{2}|
- [\xF0-\xF7][\x80-\xBF]{3})+/nx) { |s|
- s.unpack("U*").pack("n*").unpack("H*")[0].gsub(/.{4}/n, '\\\\u\&')
- }
+ json = string.gsub(escape_regex) { |s| ESCAPED_CHARS[s] }
json = %("#{json}")
json.force_encoding(::Encoding::UTF_8) if json.respond_to?(:force_encoding)
json
diff --git a/activesupport/test/json/encoding_test.rb b/activesupport/test/json/encoding_test.rb
index 19881287b5..b734729988 100644
--- a/activesupport/test/json/encoding_test.rb
+++ b/activesupport/test/json/encoding_test.rb
@@ -100,11 +100,11 @@ class TestJSONEncoding < Test::Unit::TestCase
def test_utf8_string_encoded_properly_when_kcode_is_utf8
with_kcode 'UTF8' do
result = ActiveSupport::JSON.encode('€2.99')
- assert_equal '"\\u20ac2.99"', result
+ assert_equal '"€2.99"', result
assert_equal(Encoding::UTF_8, result.encoding) if result.respond_to?(:encoding)
result = ActiveSupport::JSON.encode('✎☺')
- assert_equal '"\\u270e\\u263a"', result
+ assert_equal '"✎☺"', result
assert_equal(Encoding::UTF_8, result.encoding) if result.respond_to?(:encoding)
end
end
@@ -113,11 +113,24 @@ class TestJSONEncoding < Test::Unit::TestCase
def test_non_utf8_string_transcodes
s = '二'.encode('Shift_JIS')
result = ActiveSupport::JSON.encode(s)
- assert_equal '"\\u4e8c"', result
+ assert_equal '"二"', result
assert_equal Encoding::UTF_8, result.encoding
end
end
+ def test_wide_utf8_chars
+ w = '𠜎'
+ result = ActiveSupport::JSON.encode(w)
+ assert_equal '"𠜎"', result
+ end
+
+ def test_wide_utf8_roundtrip
+ hash = { string: "𐒑" }
+ json = ActiveSupport::JSON.encode(hash)
+ decoded_hash = ActiveSupport::JSON.decode(json)
+ assert_equal "𐒑", decoded_hash['string']
+ end
+
def test_exception_raised_when_encoding_circular_reference_in_array
a = [1]
a << a