| # Script to watch a directory for any changes to a haml file | |
| # and compile it. | |
| # Copyright © 2013 Gyula László. Code released under the DWTFYW License. | |
| require 'fssm' | |
| require 'haml' | |
| class HamlWatch < Thor | |
| include Thor::Actions | |
| desc 'compile FROM TO', 'Compile the haml files in FROM to TO' | |
| method_option :extension, type: :string, default: '', | |
| desc: 'The new extension to append to the file name instead of .haml' | |
| method_option :encoding, type: :string, default: 'UTF-8', | |
| desc: 'The default encoding to use' | |
| method_option :glob, type: :string, default: '**/*.haml', | |
| desc: 'The glob for the files to look for' | |
| def compile from, to | |
| watched_dir = File.join(File.dirname(__FILE__), from) | |
| output_path = File.join(File.dirname(__FILE__), to) | |
| opts = options | |
| say_status "HamlWatch", "Monitoring for changes to '#{from}'..." | |
| haml_watch = self | |
| glob = options[:glob] | |
| Dir[ File.join( watched_dir, glob ) ].each do |f| | |
| rel_path = f.gsub watched_dir, '' | |
| on_file_recompile watched_dir, rel_path, output_path | |
| end | |
| FSSM.monitor(watched_dir, glob ) do | |
| update { |base, relative| haml_watch.on_file_recompile( base, relative, output_path ) } | |
| create { |base, relative| haml_watch.on_file_recompile( base, relative, output_path ) } | |
| end | |
| end | |
| no_tasks do | |
| # Helper for unifying calls to compilations from fs events | |
| def on_file_recompile base, relative, output_path | |
| input = File.join(base, relative) | |
| # remove the haml extension and replace it with the options provided | |
| output = File.join output_path, relative.gsub!('.haml', options[:extension]) | |
| compile_haml_file input, output, encoding: options[:encoding] | |
| end | |
| # Helper for compiling a HAML template to an Html one | |
| # it simply wraps the creation for the output | |
| # and forwards it to run_haml_compiler | |
| def compile_haml_file in_path, out_path, opts={} | |
| opts = { create_directory: true }.merge opts | |
| if opts[:create_directory] | |
| base_path = File.dirname(out_path) | |
| # Create the directory for the output file | |
| empty_directory base_path, verbose: false | |
| end | |
| run_haml_compiler in_path, out_path, opts | |
| end | |
| # Helper method for wrapping the HAML compiler. | |
| def run_haml_compiler in_path, out_path, opts={} | |
| opts = { format: :html5, create_directory: true, encoding: 'UTF-8'}.merge opts | |
| # Convert the format to sym so haml wont throw an error | |
| opts[:format] = opts[:format].to_sym | |
| nice_paths = [in_path, out_path].map {|p| p.gsub(File.dirname(__FILE__), '')} | |
| # Load and compile the template | |
| template = "" | |
| begin | |
| File.open(in_path, "r:#{opts[:encoding]}") { |f| template = f.read } | |
| haml_engine = Haml::Engine.new(template, opts) | |
| File.open(out_path, "w:#{opts[:encoding]}") { |f| f.puts haml_engine.render } | |
| # Try to write out nice paths | |
| say_status "HAML", "[#{Time.now.strftime("%H:%M")}] #{nice_paths[0]} -> #{nice_paths[1]}" | |
| rescue Exception => e | |
| say_status "ERROR", "[#{Time.now.strftime("%H:%M")}] #{nice_paths[0]} -> #{nice_paths[1]}" | |
| puts e | |
| end | |
| end | |
| end | |
| end | |