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Adds titleize/titlecase to AS::Multibyte::Chars

[#2794 state:resolved]

Signed-off-by: José Valim <jose.valim@gmail.com>
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norman authored and josevalim committed May 28, 2010
1 parent 95a8f25 commit 667522ca9834ce1f173a3421fb0bf0f555324c6f
Showing with 24 additions and 0 deletions.
  1. +10 −0 activesupport/lib/active_support/multibyte/chars.rb
  2. +14 −0 activesupport/test/multibyte_chars_test.rb
@@ -371,6 +371,16 @@ def capitalize
(slice(0) || chars('')).upcase + (slice(1..-1) || chars('')).downcase
end
+ # Capitalizes the first letter of every word, when possible.
+ #
+ # Example:
+ # "ÉL QUE SE ENTERÓ".mb_chars.titleize # => "Él Que Se Enteró"
+ # "日本語".mb_chars.titleize # => "日本語"
+ def titleize
+ chars(downcase.to_s.gsub(/\b('?[\S])/u) { Unicode.apply_mapping $1, :uppercase_mapping })
+ end
+ alias_method :titlecase, :titleize
+
# Returns the KC normalization of the string by default. NFKC is considered the best normalization form for
# passing strings to databases and validations.
#
@@ -443,6 +443,11 @@ def test_capitalize_should_work_on_ascii_characters
assert_equal 'Abc', 'abc'.mb_chars.capitalize
end
+ def test_titleize_should_work_on_ascii_characters
+ assert_equal '', ''.mb_chars.titleize
+ assert_equal 'Abc Abc', 'abc abc'.mb_chars.titleize
+ end
+
def test_respond_to_knows_which_methods_the_proxy_responds_to
assert ''.mb_chars.respond_to?(:slice) # Defined on Chars
assert ''.mb_chars.respond_to?(:capitalize!) # Defined on Chars
@@ -480,6 +485,15 @@ def test_capitalize_should_be_unicode_aware
end
end
+ def test_titleize_should_be_unicode_aware
+ assert_equal "Él Que Se Enteró", chars("ÉL QUE SE ENTERÓ").titleize
+ assert_equal "Абвг Абвг", chars("аБвг аБвг").titleize
+ end
+
+ def test_titleize_should_not_affect_characters_that_do_not_case_fold
+ assert_equal "日本語", chars("日本語").titleize
+ end
+
def test_limit_should_not_break_on_blank_strings
example = chars('')
assert_equal example, example.limit(0)

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