First commit

.gitignore

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+.DS_Store
+*.gem
+coverage
+pkg
+spec/tmp
+tmp

MIT-LICENSE

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+Copyright (c) 2009 Winton Welsh
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of 
+this software and associated documentation files (the "Software"), to deal in 
+the Software without restriction, including without limitation the rights to 
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of 
+the Software, and to permit persons to whom the Software is furnished to do so, 
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all 
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS 
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR 
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.markdown

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+Secret Key
+==========
+
+Provides an accessor for a secret key stored in <code>tmp</code>.
+
+Setup
+-----
+
+<pre>
+gem sources -a http://gems.github.com
+sudo gem install winton-secret_key
+</pre>
+
+Usage
+-----
+
+<pre>
+key = SecretKey.new(File.dirname("__FILE__"))
+key.read
+</pre>

Rakefile

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+require 'rubygems'
+require 'rake'
+require 'rake/gempackagetask'
+require 'spec/rake/spectask'
+require 'gemspec'
+
+desc "Generate gemspec"
+task :gemspec do
+  File.open("#{Dir.pwd}/#{GEM_NAME}.gemspec", 'w') do |f|
+    f.write(GEM_SPEC.to_ruby)
+  end
+end
+
+desc "Install gem"
+task :install do
+  Rake::Task['gem'].invoke
+  `sudo gem uninstall #{GEM_NAME} -x`
+  `sudo gem install pkg/#{GEM_NAME}*.gem`
+  `rm -Rf pkg`
+end
+
+desc "Package gem"
+Rake::GemPackageTask.new(GEM_SPEC) do |pkg|
+  pkg.gem_spec = GEM_SPEC
+end
+
+desc "Run specs"
+Spec::Rake::SpecTask.new do |t|
+  t.rcov = true
+  t.spec_opts = ["--format", "specdoc", "--colour"]
+  t.spec_files = FileList["spec/**/*_spec.rb"]
+end

gemspec.rb

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+GEM_NAME = 'secret_key'
+GEM_FILES = FileList['**/*'] - FileList['coverage', 'coverage/**/*', 'pkg', 'pkg/**/*']
+GEM_SPEC = Gem::Specification.new do |s|
+  # == CONFIGURE ==
+  s.author = "Winton Welsh"
+  s.email = "mail@wintoni.us"
+  s.homepage = "http://github.com/winton/#{GEM_NAME}"
+  s.summary = "Provides an accessor for a secret key stored in tmp"
+  # == CONFIGURE ==
+  s.executables << GEM_NAME
+  s.extra_rdoc_files = [ "README.markdown" ]
+  s.files = GEM_FILES.to_a
+  s.has_rdoc = false
+  s.name = GEM_NAME
+  s.platform = Gem::Platform::RUBY
+  s.require_path = "lib"
+  s.version = "0.1.0"
+end

lib/secret_key.rb

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+require 'digest/sha1'
+
+class SecretKey
+
+  attr_reader :key
+
+  def initialize(base_dir)
+    tmp = "#{base_dir}/tmp"
+    tmp = File.expand_path(tmp)
+    FileUtils.mkdir_p(tmp)
+    @path = "#{tmp}/secret_key"
+  end
+
+  def read
+    if @key
+      @key
+    elsif exists?
+      @key = File.read(@path).strip
+    else
+      write
+    end
+  end
+
+  def write
+    File.open(@path, 'w') do |f|
+      @key = RUBY_PLATFORM + rand(10000000000000).to_s
+      @key = Digest::SHA1.hexdigest(@key)
+      f.write(@key)
+    end
+    @key
+  end
+
+  private
+
+  def exists?
+    File.exists?(@path)
+  end
+end

spec/secret_key_spec.rb

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+require File.expand_path("#{File.dirname(__FILE__)}/spec_helper")
+
+describe SecretKey do
+
+  before(:all) do
+    reset
+    @secret_key = SecretKey.new(File.dirname(__FILE__))
+    @key = @secret_key.read
+  end
+
+  context "first read" do
+
+    it "should generate the key" do
+      @key.length.should == 40
+    end
+  end
+
+  context "second read" do
+
+    it "should already have the key stored" do
+      @secret_key.key.length.should == 40
+    end
+  end
+
+  context "first read with temp file present" do
+
+    before(:all) do
+      @secret_key = SecretKey.new(File.dirname(__FILE__))
+    end
+
+    it "should read the key from the temp file" do
+      @secret_key.read.length.should == 40
+      @secret_key.read.should == @key
+    end
+  end
+
+end

spec/spec.opts

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+--color

spec/spec_helper.rb

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+$TESTING=true
+SPEC = File.dirname(__FILE__)
+$:.unshift File.expand_path("#{SPEC}/../lib")
+
+require 'secret_key'
+require 'pp'
+
+Spec::Runner.configure do |config|
+end
+
+# For use with rspec textmate bundle
+def debug(object)
+  puts "<pre>"
+  puts object.pretty_inspect.gsub('<', '&lt;').gsub('>', '&gt;')
+  puts "</pre>"
+end
+
+def reset
+  FileUtils.rm_rf File.dirname(__FILE__) + "/tmp"
+end