added credits, LICENSE, updated README, re-organized code into lib/ s…

…tructure

.gitignore

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+.DS_Store
+test/tmp
+*.gem

LICENSE

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+(The MIT License)
+
+Copyright (c) 2011 Cody Caughlan.
+
+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

@@ -1 +1,3 @@
-Enable Postgres HStore column serialization for your ActiveRecord / Rails 3.1+ project
+Enable Postgres HStore column serialization for your ActiveRecord / Rails 3.1+ project.
+
+Huge thanks and credit to https://github.com/softa/activerecord-postgres-hstore for code and inspiration.

active_record_hstore_serializer.gemspec

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+Gem::Specification.new do |s|
+  s.name          = 'active_record_hstore_serializer'
+  s.version       = '0.0.2'
+  s.date          = '2011-11-19'
+  s.summary       = "Serialize attributes using HStore in ActiveRecord / Rails 3.1+"
+  s.description   = "Leverage Postgres HStore for awesome attribute serialization."
+  s.authors       = ["Cody Caughlan"]
+  s.email         = '[email protected]'
+  s.files         = ["lib/active_record_hstore_serializer.rb"]
+  s.homepage      = 'https://github.com/ruckus/active_record_hstore_serializer'
+  s.files         = [
+    ".gitignore",
+     "LICENSE",
+     "README",
+     "lib/active_record_hstore_serializer.rb",
+     "lib/active_record_hstore_serializer/hash.rb",
+     "lib/active_record_hstore_serializer/string.rb",
+     "lib/active_record_hstore_serializer/hstore_serializer.rb",
+     "active_record_hstore_serializer.gemspec"
+  ]
+  s.require_paths = ['lib']
+  s.has_rdoc      = false
+end

lib/active_record_hstore_serializer.rb

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+require 'active_record_hstore_serializer/hash'
+require 'active_record_hstore_serializer/string'
+require 'active_record_hstore_serializer/hstore_serializer'

lib/active_record_hstore_serializer/hash.rb

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+class Hash
+
+  def to_hstore
+    return "" if empty?
+    map {|idx, val| %Q{"#{idx.to_s}"=>"#{val.to_s}"}  }.join(', ')
+  end
+
+  # If the method from_hstore is called in a Hash, it just returns self.
+  def from_hstore
+    self
+  end
+
+end

lib/active_record_hstore_serializer/hstore_serializer.rb

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+class HstoreSerializer
+
+  def self.load(text)
+    return unless text
+    text.from_hstore
+  end
+
+  def self.dump(text)
+    text.to_hstore
+  end
+end
+
+
+
+

lib/active_record_hstore_serializer/string.rb

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+class String
+
+  # If the value os a column is already a String and it calls to_hstore, it
+  # just returns self. Validation occurs afterwards.
+  def to_hstore
+    self
+  end
+
+  # Validates the hstore format. Valid formats are:
+  # * An empty string
+  # * A string like %("foo"=>"bar"). I'll call it a "double quoted hstore format".
+  # * A string like %('foo'=>'bar'). I'll call it a "single quoted hstore format".
+  def valid_hstore?
+    return true if empty? || self == "''"
+    # This is what comes from the database
+    dbl_quotes_re = /"([^"]+)"=>"([^"]+)"/
+    # TODO
+    # This is what comes from the plugin
+    # this is a big problem, 'cause regexes does not know how to count...
+    # how should i very values quoted with two single quotes? using .+ sux.
+    sngl_quotes_re = /'(.+)'=>'(.+)'/
+    self.match(dbl_quotes_re) || self.match(sngl_quotes_re)
+  end
+
+  # Creates a hash from a valid double quoted hstore format, 'cause this is the format
+  # that postgresql spits out.
+  def from_hstore
+    Hash[ scan(/"([^"]+)"=>"([^"]+)"/) ]
+  end
+
+  def escape_quotes
+    self.gsub(/'/,"''")
+  end
+
+end