Module: Jekyll::Watcher

Extended by:
Watcher
Included in:
Watcher
Defined in:
lib/jekyll/watcher.rb

Instance Method Summary collapse

Instance Method Details

#build_listener(options) ⇒ Object 



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# File 'lib/jekyll/watcher.rb', line 24

def build_listener(options)
  require 'listen'
  Listen.to(
    options['source'],
    :ignore => listen_ignore_paths(options),
    :force_polling => options['force_polling'],
    &(listen_handler(options))
  )
end

#listen_handler(options) ⇒ Object 



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# File 'lib/jekyll/watcher.rb', line 34

def listen_handler(options)
  proc { |modified, added, removed|
    t = Time.now.strftime("%Y-%m-%d %H:%M:%S")
    c = modified + added + removed
    n = c.length
    print Jekyll.logger.message("Regenerating:", "#{n} files at #{t} ")
    begin
      Jekyll::Command.process_site(Jekyll::Site.new(options))
      puts  "...done."
    rescue => e
      puts "...error:"
      Jekyll.logger.warn "Error:", e.message
      Jekyll.logger.warn "Error:", "Run jekyll build --trace for more information."
    end
  }
end

#listen_ignore_paths(options) ⇒ Object

Paths to ignore for the watch option

options - A Hash of options passed to the command

Returns a list of relative paths from source that should be ignored



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# File 'lib/jekyll/watcher.rb', line 56

def listen_ignore_paths(options)
  source       = options['source']
  destination  = options['destination']
  config_files = Jekyll.sanitized_path(source, "_config.yml")
  paths = (
    Array(config_files) \
    + Array(destination) \
    + Array(options['exclude']).map { |e| Jekyll.sanitized_path(source, e) }
  )
  ignored = []

  source_abs = Pathname.new(source).expand_path
  paths.each do |p|
    path_abs = Pathname.new(p).expand_path
    begin
      rel_path = path_abs.relative_path_from(source_abs).to_s
      ignored << Regexp.new(Regexp.escape(rel_path)) unless rel_path.start_with?('../')
    rescue ArgumentError
      # Could not find a relative path
    end
  end

  Jekyll.logger.debug "Watcher:", "Ignoring #{ignored.map(&:inspect).join(', ')}"
  ignored
end

#watch(options) ⇒ Object 



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# File 'lib/jekyll/watcher.rb', line 5

def watch(options)
  listener = build_listener(options)
  listener.start

  Jekyll.logger.info "Auto-regeneration:", "enabled for '#{options['source']}'"

  unless options['serving']
    trap("INT") do
      listener.stop
      puts "     Halting auto-regeneration."
      exit 0
    end

    loop { sleep 1000 }
  end
rescue ThreadError => e
  # You pressed Ctrl-C, oh my!
end