Class Haml::Exec::HamlSass
In: lib/haml/exec.rb
Parent: Generic

An abstrac class that encapsulates the code specific to the `haml` and `sass` executables.

Methods

new   process_result   set_opts  

Public Class methods

new(args)

@param args [Array<String>] The command-line arguments

[Source]

     # File lib/haml/exec.rb, line 177
177:       def initialize(args)
178:         super
179:         @options[:for_engine] = {}
180:       end

Protected Instance methods

process_result()

Processes the options set by the command-line arguments. In particular, sets `@options[:for_engine][:filename]` to the input filename and requires the appropriate file.

This is meant to be overridden by subclasses so they can run their respective programs.

[Source]

     # File lib/haml/exec.rb, line 262
262:       def process_result
263:         super
264:         @options[:for_engine][:filename] = @options[:filename] if @options[:filename]
265:         require File.dirname(__FILE__) + "/../#{@name.downcase}"
266:       end
set_opts(opts)

Tells optparse how to parse the arguments available for the `haml` and `sass` executables.

This is meant to be overridden by subclasses so they can add their own options.

@param opts [OptionParser]

[Source]

     # File lib/haml/exec.rb, line 191
191:       def set_opts(opts)
192:         opts.banner = "Usage: \#{@name.downcase} [options] [INPUT] [OUTPUT]\n\nDescription:\n  Uses the \#{@name} engine to parse the specified template\n  and outputs the result to the specified file.\n\nOptions:\n"
193: 
194:         opts.on('--rails RAILS_DIR', "Install Haml and Sass from the Gem to a Rails project") do |dir|
195:           original_dir = dir
196: 
197:           env = File.join(dir, "config", "environment.rb")
198:           if File.exists?(File.join(dir, "Gemfile"))
199:             puts("haml --rails isn't needed for Rails 3 or greater.",
200:               "Add 'gem \"haml\"' to your Gemfile instead.", "",
201:               "haml --rails will no longer work in the next version of #{@name}.", "")
202:           elsif File.exists?(env) && File.open(env) {|env| env.grep(/config\.gem/)}
203:             puts("haml --rails isn't needed for Rails 2.1 or greater.",
204:               "Add 'gem \"haml\"' to config/environment.rb instead.", "",
205:               "haml --rails will no longer work in the next version of #{@name}.", "")
206:           end
207: 
208:           dir = File.join(dir, 'vendor', 'plugins')
209: 
210:           unless File.exists?(dir)
211:             puts "Directory #{dir} doesn't exist"
212:             exit 1
213:           end
214: 
215:           dir = File.join(dir, 'haml')
216: 
217:           if File.exists?(dir)
218:             print "Directory #{dir} already exists, overwrite [y/N]? "
219:             exit 2 if gets !~ /y/i
220:             FileUtils.rm_rf(dir)
221:           end
222: 
223:           begin
224:             Dir.mkdir(dir)
225:           rescue SystemCallError
226:             puts "Cannot create #{dir}"
227:             exit 1
228:           end
229: 
230:           File.open(File.join(dir, 'init.rb'), 'w') do |file|
231:             file << File.read(File.dirname(__FILE__) + "/../../init.rb")
232:           end
233: 
234:           puts "Haml plugin added to #{original_dir}"
235:           exit
236:         end
237: 
238:         opts.on('-c', '--check', "Just check syntax, don't evaluate.") do
239:           require 'stringio'
240:           @options[:check_syntax] = true
241:           @options[:output] = StringIO.new
242:         end
243: 
244:         super
245:       end

[Validate]