adds in metadata transformations

.rspec

@@ -0,0 +1,2 @@
+--color
+--require spec_helper

.travis.yml

@@ -0,0 +1,3 @@
+language: ruby
+rvm:
+  - 2.1.5

Gemfile

@@ -2,3 +2,5 @@ source 'https://rubygems.org'
 
 # Specify your gem's dependencies in geo_combine.gemspec
 gemspec
+
+gem 'coveralls', require: false

Rakefile

@@ -1,3 +1,23 @@
 require 'bundler/gem_tasks'
 
 Dir.glob('lib/tasks/*.rake').each { |r| load r}
+
+desc 'Run console for development'
+task :console do
+  require 'irb'
+  require 'irb/completion'
+  require 'irb/ext/save-history'
+  require 'geo_combine'
+  ARGV.clear
+  IRB.start
+end
+
+begin
+  require 'rspec/core/rake_task'
+
+  RSpec::Core::RakeTask.new(:spec)
+
+  task :default => :spec
+rescue LoadError
+  # no rspec available
+end

geo_combine.gemspec

@@ -19,7 +19,9 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency 'rsolr'
+  spec.add_dependency 'nokogiri'
 
   spec.add_development_dependency "bundler", "~> 1.7"
   spec.add_development_dependency "rake", "~> 10.0"
+  spec.add_development_dependency 'rspec'
 end

lib/geo_combine.rb

@@ -1,7 +1,40 @@
-require 'geo_combine/version'
+require 'nokogiri'
 
 module GeoCombine
 
+  ##
+  # TODO: Create a parse method that can interpret the type of metadata being
+  # passed in.
+  #
+  # def self.parse metadata
+  # end
+
+  ##
+  # Abstract class for GeoCombine objects
+  class Metadata
+    attr_reader :metadata
+
+    ##
+    # Creates a new GeoCombine::Metadata object, where metadata parameter is can
+    # be a File path or String of XML
+    # @param (String) metadata can be a File path 
+    # "./tmp/edu.stanford.purl/bb/338/jh/0716/iso19139.xml" or a String of XML
+    # metadata
+    def initialize metadata
+      metadata = File.read metadata if File.readable? metadata
+      metadata = Nokogiri::XML(metadata) if metadata.instance_of? String
+      @metadata = metadata
+    end
+
+    ##
+    # Perform an XSLT tranformation on metadata using an object's XSL
+    def to_geoblacklight
+      GeoCombine::Geoblacklight.new(xsl.transform(@metadata))
+    end
+  end
 end
 
-load File.expand_path('../tasks/geo_combine.rake', __FILE__)
+require 'geo_combine/fgdc'
+require 'geo_combine/geoblacklight'
+require 'geo_combine/iso19139'
+require 'geo_combine/version'

lib/geo_combine/fgdc.rb

@@ -0,0 +1,14 @@
+module GeoCombine
+
+  ##
+  # FIXME: FGDC parsing, transformations are still experimental
+  class Fgdc < Metadata
+
+    ##
+    # Returns a Nokogiri::XSLT object containing the FGDC to GeoBlacklight XSL
+    # @return (Nokogiri::XSLT)
+    def xsl
+      Nokogiri::XSLT(File.read('./lib/xslt/fgdc2geoBL.xsl'))
+    end
+  end
+end

lib/geo_combine/geoblacklight.rb

@@ -0,0 +1,25 @@
+module GeoCombine
+  class Geoblacklight < Metadata
+
+    ##
+    # Returns a string of JSON from a GeoBlacklight hash
+    # @return (String)
+    def to_json
+      to_hash.to_json
+    end
+
+    ##
+    # Returns a hash from a GeoBlacklight object
+    # @return (Hash)
+    def to_hash
+      hash = {}
+      @metadata.css('field').each do |field|
+        (hash[field.attributes['name'].value] ||= []) << field.children.text
+      end
+      hash.collect do |key, value|
+        hash[key] = value.count > 1 ? { key => value } : { key => value[0] }
+      end
+      hash
+    end
+  end
+end

lib/geo_combine/iso19139.rb

@@ -0,0 +1,12 @@
+module GeoCombine
+  class Iso19139 < Metadata
+
+    ##
+    # Returns a Nokogiri::XSLT object containing the ISO19139 to GeoBlacklight
+    # XSL
+    # @return (Nokogiri::XSLT)
+    def xsl
+      Nokogiri::XSLT(File.read('./lib/xslt/iso2geoBL.xsl'))
+    end
+  end
+end