initialize repository

diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+*~
+*.log
+*.db
+

diff --git a/README b/README
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+++ b/README
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+TimestampsAsString
+=================
+
+Description goes here

diff --git a/Rakefile b/Rakefile
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+++ b/Rakefile
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+require 'rake'
+require 'rake/testtask'
+require 'rake/rdoctask'
+require 'rake/gempackagetask'
+
+desc 'Default: run unit tests.'
+task :default => :test
+
+desc 'Test the timestamps_as_string plugin.'
+Rake::TestTask.new(:test) do |t|
+  t.libs << 'lib'
+  t.pattern = 'test/**/*_test.rb'
+  t.verbose = true
+end
+
+desc 'Generate documentation for the timestamps_as_string plugin.'
+Rake::RDocTask.new(:rdoc) do |rdoc|
+  rdoc.rdoc_dir = 'rdoc'
+  rdoc.title    = 'TimestampsAsString'
+  rdoc.options << '--line-numbers' << '--inline-source'
+  rdoc.rdoc_files.include('README')
+  rdoc.rdoc_files.include('lib/**/*.rb')
+end
+
+PKG_FILES = FileList[
+  'lib/*.rb',
+  'rails/init.rb',
+  'spec/*'
+]
+spec = Gem::Specification.new do |s|
+  s.name = 'timestamps_as_string'
+  s.version = '0.0.1'
+  s.author = 'Good-Day, Inc.'
+  s.email = 'info@good-day.co.jp'
+  s.homepage = 'http://www.good-day.jp/'
+  s.platform = Gem::Platform::RUBY
+  s.summary = 'Add functionarity of timestamps as string'
+  s.files = PKG_FILES.to_a
+  s.require_path = 'lib'
+  s.has_rdoc = false
+  s.extra_rdoc_files = ['README']
+end
+
+Rake::GemPackageTask.new(spec) do |pkg|
+  pkg.gem_spec = spec
+end

diff --git a/lib/timestamps_as_string.rb b/lib/timestamps_as_string.rb
new file mode 100644 (file)
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+++ b/lib/timestamps_as_string.rb
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+require "rubygems"
+require "active_record"
+
+# テーブルに格納されている時刻を透過的に扱うためのモジュール。
+module TimestampsAsString
+  def self.included(base) #:nodoc:
+    super
+
+    base.alias_method_chain :create, :string_timestamps
+    base.alias_method_chain :update, :string_timestamps
+
+    base.record_timestamps = false
+    base.class_inheritable_accessor :record_string_timestamps, :instance_writer => false
+    base.record_string_timestamps = true
+
+    base.extend(ClassMethods)
+  end
+
+  module ClassMethods
+    def timestamps_as_string
+      class_eval do
+        alias :created_at :created_at_with_string_timestamps
+        alias :updated_at :updated_at_with_string_timestamps
+      end
+    end
+  end
+
+  # 作成の際にカラム <tt>created_at</tt> や <tt>updated_at</tt> に日時を内部表現で格納する。
+  def create_with_string_timestamps #:nodoc:
+    if record_string_timestamps
+      s = Time.now.utc.strftime("%Y%m%d%H%M%S")
+      write_attribute("created_at", s) if self.class.column_names.include?("created_at") && created_at.nil?
+      write_attribute("updated_at", s) if self.class.column_names.include?("updated_at")
+    end
+    create_without_string_timestamps
+  end
+
+  # 更新の際にカラム <tt>updated_at</tt> に日時を内部表現で格納する。
+  def update_with_string_timestamps #:nodoc:
+    if record_string_timestamps
+      s = Time.now.utc.strftime("%Y%m%d%H%M%S")
+      write_attribute("updated_at", s) if self.class.column_names.include?("updated_at")
+    end
+    update_without_string_timestamps
+  end
+
+  # <tt>created_at</tt> を置き換える。
+  # 内部表現から時刻オブジェクトへ変換して返す。
+  def created_at_with_string_timestamps
+    return convert_from_string_timestamp(read_attribute_before_type_cast("created_at"))
+  end
+
+  # <tt>updated_at</tt> を置き換える。
+  # 内部表現から時刻オブジェクトへ変換して返す。
+  def updated_at_with_string_timestamps
+    return convert_from_string_timestamp(read_attribute_before_type_cast("updated_at"))
+  end
+
+  module_function
+
+  def convert_from_string_timestamp(str)
+    if str.nil?
+      return nil
+    elsif /\A(....)(..)(..)(..)?(..)?(..)?\z/ =~ str
+      return Time.utc(*$~.captures.compact).localtime
+    else
+      raise ArgumentError, "invalid timestamp #{str.inspect}"
+    end
+  end
+
+end
+
+ActiveRecord::Base.class_eval do
+  include TimestampsAsString
+end

diff --git a/rails/init.rb b/rails/init.rb
new file mode 100644 (file)
index 0000000..a73a53d
--- /dev/null
+++ b/rails/init.rb
@@ -0,0 +1 @@
+require "timestamps_as_string"

diff --git a/tasks/timestamps_as_string_tasks.rake b/tasks/timestamps_as_string_tasks.rake
new file mode 100644 (file)
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--- /dev/null
+++ b/tasks/timestamps_as_string_tasks.rake
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+# desc "Explaining what the task does"
+# task :timestamps_as_string do
+#   # Task goes here
+# end

diff --git a/test/timestamps_as_string_test.rb b/test/timestamps_as_string_test.rb
new file mode 100644 (file)
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+++ b/test/timestamps_as_string_test.rb
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+require "test/unit"
+require "timestamps_as_string"
+
+class TimestampsAsStringTest < Test::Unit::TestCase
+  def assert_convert_from_string_timestamp(expected, actual)
+    actual = TimestampsAsString.convert_from_string_timestamp(actual)
+    assert_equal(expected, actual)
+  end
+  def test_convert_from_string_timestamp
+    assert_convert_from_string_timestamp(Time.utc(2007, 8, 9), "20070809")
+    assert_convert_from_string_timestamp(Time.utc(2007, 8, 9, 10), "2007080910")
+    assert_convert_from_string_timestamp(Time.utc(2007, 8, 9, 10, 11), "200708091011")
+    assert_convert_from_string_timestamp(Time.utc(2007, 8, 9, 10, 11, 12), "20070809101112")
+    assert_raise(ArgumentError) do
+      TimestampsAsString.convert_from_string_timestamp("2007080910111213")
+    end
+    assert_convert_from_string_timestamp(nil, nil)
+  end
+end