add size alias for length

starting to make `RepeatedField` quack like an array

additional changes:
* make sure gemspec gets all ruby code files
* add homepage in gem spec removes one of the warnings, and the gem spec authors are pushing
everyone to include a homepage in the gem
* remove excess whitespace in test suite to bring formatting inline with the rest of the file

Author: skippy

ruby/.gitignore

@@ -5,3 +5,4 @@ lib/google/protobuf_java.jar
 protobuf-jruby.iml
 target/
 pkg/
+tmp/

ruby/google-protobuf.gemspec

@@ -4,10 +4,11 @@ Gem::Specification.new do |s|
   s.licenses    = ["BSD"]
   s.summary     = "Protocol Buffers"
   s.description = "Protocol Buffers are Google's data interchange format."
+  s.homepage    = "https://developers.google.com/protocol-buffers"
   s.authors     = ["Protobuf Authors"]
   s.email       = "[email protected]"
   s.require_paths = ["lib"]
-  s.files       = ["lib/google/protobuf.rb"]
+  s.files       = `git ls-files -z`.split("\x0").find_all{|f| f =~ /lib\/.+\.rb/}
   unless RUBY_PLATFORM == "java"
     s.files     += `git ls-files "*.c" "*.h" extconf.rb Makefile`.split
     s.extensions= ["ext/google/protobuf_c/extconf.rb"]

ruby/lib/google/protobuf.rb

@@ -34,3 +34,5 @@
 else
   require 'google/protobuf_c'
 end
+
+require 'google/protobuf/repeated_field'

ruby/lib/google/protobuf/repeated_field.rb

@@ -0,0 +1,40 @@
+# Protocol Buffers - Google's data interchange format
+# Copyright 2008 Google Inc.  All rights reserved.
+# https://developers.google.com/protocol-buffers/
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# add syntatic sugar on top of the core library
+module Google
+  module Protobuf
+    class RepeatedField
+
+      alias_method :size, :length
+
+    end
+  end
+end

ruby/tests/basic.rb

@@ -377,6 +377,18 @@ def test_rptfield_initialize
       end
     end
 
+    def test_rptfield_array_ducktyping
+      l = Google::Protobuf::RepeatedField.new(:int32)
+      length_methods = %w(count length size)
+      length_methods.each do |lm|
+        assert l.send(lm)  == 0
+      end
+      l.push 4
+      length_methods.each do |lm|
+        assert l.send(lm)  == 1
+      end
+    end
+
     def test_map_basic
       # allowed key types:
       # :int32, :int64, :uint32, :uint64, :bool, :string, :bytes.
@@ -827,7 +839,6 @@ def test_bad_field_names
       assert m['a.b'] == 4
     end
 
-
     def test_int_ranges
       m = TestMessage.new
 
@@ -933,7 +944,6 @@ def test_int_ranges
       assert_raise RangeError do
         m.optional_uint64 = 1.5
       end
-
     end
 
     def test_stress_test