Ticket #11123: add_squish_method_to_string.diff

activesupport/test/core_ext/string_ext_test.rb

@@ -168 +168 @@
-    assert !s.end_with?('el')
-  end
-
+  def test_string_squish
+    original = %{ A string with tabs(\t\t), newlines(\n\n), and
+                  many spaces(  ). }
+
+    expected = "A string with tabs( ), newlines( ), and many spaces( )."
+
+    # Make sure squish returns what we expect:
+    assert_equal original.squish,  expected
+
+    # Make sure squish! returns what we expect:
+    assert_equal original.squish!, expected
+
+    # Make sure squish! changes the original to what we expect:
+    assert_equal original, expected
+  end
+
-  if RUBY_VERSION < '1.9'
-    def test_each_char_with_utf8_string_when_kcode_is_utf8
-      old_kcode, $KCODE = $KCODE, 'UTF8'

activesupport/lib/active_support/core_ext/string.rb

@@ -5 +5 @@
-require 'active_support/core_ext/string/iterators' unless 'test'.respond_to?(:each_char)
-require 'active_support/core_ext/string/unicode'
-require 'active_support/core_ext/string/xchar'
+require 'active_support/core_ext/string/filters'
-
-class String #:nodoc:
-  include ActiveSupport::CoreExtensions::String::Access
-  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

activesupport/lib/active_support/core_ext/string/filters.rb

@@ +1 @@
+module ActiveSupport #:nodoc:
+  module CoreExtensions #:nodoc:
+    module String #:nodoc:
+      module Filters
+        # Returns the string, first removing all whitespace on both ends of
+        # the string, and then changing remaining consecutive whitespace
+        # groups into one space each.
+        #
+        # Examples:
+        #   %{ Multi-line
+        #      string }.squish                   # => "Multi-line string"
+        #   " foo   bar    \n   \t   boo".squish # => "foo bar boo"
+        def squish
+          dup.squish!
+        end
+
+        # Performs a destructive squish. See String.squish.
+        def squish!
+          strip!
+          gsub!(/\s+/, ' ')
+          self
+        end
+      end
+    end
+  end
+end