init: engine + first engine (kramdown)

.gitignore

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+*.swp
+log
+*.gem
+*.gemspec
+tmp
+pkg

AUTHORS

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+Denis Knauf <DenisDotKnaufPlusUteAtGmailDotCom>

README.md

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+Ups, war bisher zu faul. :/

Rakefile

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+require 'rubygems'
+require 'rake'
+
+begin
+  require 'jeweler'
+  Jeweler::Tasks.new do |gem|
+    gem.name = "Ute"
+    gem.summary = %Q{Universal Template Engines Collection}
+    gem.description = %Q{Many template engines in one collection with one universal API}
+    gem.email = "Denis.Knauf@gmail.com"
+    gem.homepage = "http://github.com/DenisKnauf/Ute"
+    gem.authors = ["Denis Knauf"]
+    gem.files = %w[AUTHORS README.md VERSION lib/**/*.rb test/**/*.rb]
+    gem.require_paths = %w[lib]
+  end
+  Jeweler::GemcutterTasks.new
+rescue LoadError
+  puts "Jeweler (or a dependency) not available. Install it with: sudo gem install jeweler"
+end
+
+require 'rake/testtask'
+Rake::TestTask.new(:test) do |test|
+  test.libs << 'lib' << 'test' << 'ext'
+  test.pattern = 'test/**/*_test.rb'
+  test.verbose = true
+end
+
+begin
+  require 'rcov/rcovtask'
+  Rcov::RcovTask.new do |test|
+    test.libs << 'test'
+    test.pattern = 'test/**/*_test.rb'
+    test.verbose = true
+  end
+rescue LoadError
+  task :rcov do
+    abort "RCov is not available. In order to run rcov, you must: sudo gem install spicycode-rcov"
+  end
+end
+
+#task :test => :check_dependencies
+
+#task :default => :test
+
+require 'rdoc/task'
+Rake::RDocTask.new do |rdoc|
+  if File.exist?('VERSION')
+    version = File.read('VERSION')
+  else
+    version = ""
+  end
+
+  rdoc.rdoc_dir = 'rdoc'
+  rdoc.title = "Ute #{version}"
+  rdoc.rdoc_files.include('README*')
+  rdoc.rdoc_files.include('lib/**/*.rb')
+end

VERSION

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+0.0.1

lib/templates.rb

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+module Templates
+	class ImplementationExpected < Exception
+	end
+
+	@templates = Hash.new {|h,k| h[k] = [] }
+	@preferred = {}
+	class <<self
+		def normalize ext
+			ext.to_s.downcase.sub( /^\./, '').to_sym
+		end
+
+		def [] filename
+			%r<\.([^./]+)$> =~ filename
+			ext = normalize $1
+			@preferred[ext] || @templates[ext][0]
+		end
+
+		def new filename, options = nil
+			options[:filename] = filename
+			engine = self[filename]
+			engine && engine.new( options)
+		end
+
+		def register klass, *exts
+			exts.each do |ext|
+				@templates[normalize ext].unshift( klass).uniq!
+			end
+		end
+
+		def prefer klass, *exts
+			if exts.empty?
+				@templates.each {|ext, klasses| @preferred[ext] = klass if klasses.include? klass }
+			else
+				register klass, *exts
+				exts.each {|ext| @preferred[normalize ext] = klass }
+			end
+		end
+	end
+end

lib/templates/engine.rb

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+class Templates::Engine
+	class <<self
+		# don't forget to implement initialize for your engine.
+		# @initialized must be set to true or false like return:
+		# return: true:  engine can be provieded
+		#         false: engine can not be provieded (lib not found for example)
+		def initialize
+			raise ImplementationExpected, "Implementation for #{name}.initialize needed"
+		end
+
+		def require_template_library *libs
+			libs.each {|lib| require lib }
+			true
+		rescue LoadError
+			return false
+		end
+
+		def initialized?() @initialized end
+
+		def register *exts
+			@extentions = exts
+			Templates.register self, *exts
+		end
+	end
+
+	attr_reader :options, :filename, :line, :data
+
+	def initialize options = nil
+		@options = options.nil? ? {} : options.dup
+		@options[:filename] ||= @options[:file].nil? ? '`(_}-{_)`' : @options[:file].path
+		@filename = @options[:filename]
+		@line = @options[:line] || 1
+		@data = if @options[:content]
+				@options[:content]
+			elsif @options[:file]
+				@options[:file].read
+			elsif @options[:filename]
+				File.read @options[:filename]
+			end
+	end
+
+	def evaluate
+		raise ImplementationExpected, "Implementation for #{name}#evaluate needed"
+	end
+
+	def prepare
+		raise ImplementationExpected, "Implementation for #{name}#prepare needed"
+	end
+
+	def output
+		@output ||= evaluate
+	end
+
+	def render
+		prepare
+		output
+	end
+end

lib/templates/engines/kramdown.rb

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+class Templates::Engines::Kramdown < Templates::Engine
+	DUMB_QUOTES = [39, 39, 34, 34]
+
+	class <<self
+		def initialized?
+			defined? ::Kramdown
+		end
+
+		def initialize
+			require_template_library 'kramdown'
+		end
+	end
+
+	def prepare
+		options = @options[:options]
+		options = options.nil? ? {} : options.dup
+		options[:smart_quotes] = DUMB_QUOTES unless options[:smartypants]
+		@engine = ::Kramdown::Document.new @data, options
+		@output = nil
+	end
+
+	def evaluate
+		@engine.to_html
+	end
+
+	register :markdown, :mkd, :md
+end