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Ruby 1.8.7 compat: String#start_with? and #end_with?

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This commit is contained in:
Jeremy Kemper
2008-04-20 17:52:21 -07:00
parent 2b69840e5e
commit 549c81db4a
3 changed files with 19 additions and 14 deletions
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13
activesupport/lib/active_support/core_ext/string.rb
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@@ -2,7 +2,7 @@ require 'active_support/core_ext/string/inflections'
require 'active_support/core_ext/string/conversions'
require 'active_support/core_ext/string/access'
require 'active_support/core_ext/string/starts_ends_with'
require 'active_support/core_ext/string/iterators' unless 'test'.respond_to?(:each_char)
require 'active_support/core_ext/string/iterators'
require 'active_support/core_ext/string/unicode'
require 'active_support/core_ext/string/xchar'
require 'active_support/core_ext/string/filters'
@@ -12,14 +12,7 @@ class String #:nodoc:
include ActiveSupport::CoreExtensions::String::Conversions
include ActiveSupport::CoreExtensions::String::Filters
include ActiveSupport::CoreExtensions::String::Inflections
if RUBY_VERSION < '1.9'
include ActiveSupport::CoreExtensions::String::StartsEndsWith
else
alias starts_with? start_with?
alias ends_with? end_with?
end
if defined? ActiveSupport::CoreExtensions::String::Iterators
include ActiveSupport::CoreExtensions::String::Iterators
end
include ActiveSupport::CoreExtensions::String::StartsEndsWith
include ActiveSupport::CoreExtensions::String::Iterators
include ActiveSupport::CoreExtensions::String::Unicode
end

4
activesupport/lib/active_support/core_ext/string/iterators.rb
View File

@@ -5,6 +5,10 @@ module ActiveSupport #:nodoc:
module String #:nodoc:
# Custom string iterators
module Iterators
def self.append_features(base)
super unless '1.9'.respond_to?(:each_char)
end
# Yields a single-character string for each character in the string.
# When $KCODE = 'UTF8', multi-byte characters are yielded appropriately.
def each_char

16
activesupport/lib/active_support/core_ext/string/starts_ends_with.rb
View File

@@ -3,10 +3,18 @@ module ActiveSupport #:nodoc:
module String #:nodoc:
# Additional string tests.
module StartsEndsWith
def self.included(base)
base.class_eval do
alias_method :start_with?, :starts_with?
alias_method :end_with?, :ends_with?
def self.append_features(base)
if '1.8.7 and up'.respond_to?(:start_with?)
base.class_eval do
alias_method :starts_with?, :start_with?
alias_method :ends_with?, :end_with?
end
else
super
base.class_eval do
alias_method :start_with?, :starts_with?
alias_method :end_with?, :ends_with?
end
end
end