Module: Ruby2JS::Filter::Require

Includes:
SEXP
Defined in:
lib/ruby2js/filter/require.rb

Constant Summary collapse

@@valid_path = 
/\A[-\w_.]+\Z/

Class Method Summary collapse

Instance Method Summary collapse

Methods included from SEXP

#s

Class Method Details

.valid_path=(valid_path) ⇒ Object 



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# File 'lib/ruby2js/filter/require.rb', line 10

def self.valid_path=(valid_path)
  @@valid_path = valid_path
end

Instance Method Details

#on_lvasgn(node) ⇒ Object 



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# File 'lib/ruby2js/filter/require.rb', line 64

def on_lvasgn(node)
  require_expr, @require_expr = @require_expr, true
  super
ensure
  @require_expr = require_expr
end

#on_send(node) ⇒ Object 



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# File 'lib/ruby2js/filter/require.rb', line 14

def on_send(node)
  if
    not @require_expr and # only statements
    node.children.length == 3 and
    node.children[0] == nil and
    [:require, :require_relative].include? node.children[1] and
    node.children[2].type == :str and
    @options[:file]
  then

    begin
      file2 = @options[:file2]  

      basename = node.children[2].children.first
      dirname = File.dirname(File.expand_path(@options[:file]))

      if file2 and node.children[1] == :require_relative
        dirname = File.dirname(File.expand_path(file2))
      end

      filename = File.join(dirname, basename)

      segments = basename.split(/[\/\\]/)
      if segments.all? {|path| path =~ @@valid_path and path != '..'}
        filename.untaint 
      end

      if not File.exist? filename and File.exist? filename+".rb"
        filename += '.rb'
      end

      @options[:file2] = filename
      process Ruby2JS.parse(File.read(filename))
    ensure
      if file2
        @options[:file2] = file2
      else
        @options.delete(:file2)
      end
    end
  else
    begin
      require_expr, @require_expr = @require_expr, true
      super
    ensure
      @require_expr = require_expr
    end
  end
end