Remove comments from ruby source code?

ruby-talk
1

Dear Friends,
          If there any pre-defined function or ruby options available
for removing the ruby comments from the source code. Please any on help
me if you already aware of this.

  Regards,
S.Vellingiri.

···

--
Posted via http://www.ruby-forum.com/.

2

You should be able to use something like this to get rid of normal
comments ("#"):

http://pastie.org/601862

then you could call it like this:

remcom("filename.rb")

-Dylan

···

On Sep 1, 4:12 am, Arul hari <hariharan....@rediffmail.com> wrote:

Dear Friends,
If there any pre-defined function or ruby options available
for removing the ruby comments from the source code. Please any on help
me if you already aware of this.

Regards,
S.Vellingiri.
--
Posted viahttp://www.ruby-forum.com/.

3

The ruby_parser and ruby2ruby gems will do this:

    require 'ruby_parser'
    require 'ruby2ruby'

    code = <<END
    # a class
    class Simple
      # add the method "add"
      def add(n1,n2)
        n1 + n2 # return the sum
      end
    end
    END

    parsed = Ruby2Ruby.new.process( RubyParser.new.process( code ))

    puts parsed

results in:

    class Simple
      def add(n1, n2)
        (n1 + n2)
      end
    end

···

At 2009-09-01 07:12AM, "Arul hari" wrote:

Dear Friends,
           If there any pre-defined function or ruby options available
for removing the ruby comments from the source code. Please any on help
me if you already aware of this.

--
Glenn Jackman
    Write a wise saying and your name will live forever. -- Anonymous

4

Dylan wrote:

You should be able to use something like this to get rid of normal
comments ("#"):

http://pastie.org/601862

This is a harder problem... what do you do about the following?

name = "fred"
puts <<END
  #{name} is my name
END

···

--
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407

5

Glenn Jackman wrote:

···

At 2009-09-01 07:12AM, "Arul hari" wrote:

Dear Friends,
           If there any pre-defined function or ruby options available
for removing the ruby comments from the source code. Please any on help
me if you already aware of this.

The ruby_parser and ruby2ruby gems will do this:

    require 'ruby_parser'
    require 'ruby2ruby'

    code = <<END
    # a class
    class Simple
      # add the method "add"
      def add(n1,n2)
        n1 + n2 # return the sum
      end
    end
    END

    parsed = Ruby2Ruby.new.process( RubyParser.new.process( code ))

    puts parsed

results in:

    class Simple
      def add(n1, n2)
        (n1 + n2)
      end
    end

Dear Friends,
         Thanks to all for your prompt reply. It was really helpful to
me.

  Regards,
S.Vellingiri.
--
Posted via http://www.ruby-forum.com/\.

6

DOH! Can't believe I forgot that! :slight_smile: This should work:

http://pastie.org/602035

I'm sure there are plenty of other cases I've missed, lemme know and I
can add em.

···

On Sep 1, 10:10 am, Joel VanderWerf <vj...@path.berkeley.edu> wrote:

Dylan wrote:
> You should be able to use something like this to get rid of normal
> comments ("#"):

>http://pastie.org/601862

This is a harder problem... what do you do about the following?

name = "fred"
puts <<END
#{name} is my name
END

--
vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407

7

Arul hari wrote:

Glenn Jackman wrote:

Dear Friends,
           If there any pre-defined function or ruby options available
for removing the ruby comments from the source code. Please any on help
me if you already aware of this.

The ruby_parser and ruby2ruby gems will do this:

    require 'ruby_parser'
    require 'ruby2ruby'

    code = <<END
    # a class
    class Simple
      # add the method "add"
      def add(n1,n2)
        n1 + n2 # return the sum
      end
    end
    END

    parsed = Ruby2Ruby.new.process( RubyParser.new.process( code ))

    puts parsed

results in:

    class Simple
      def add(n1, n2)
        (n1 + n2)
      end
    end

Dear Friends,
         Thanks to all for your prompt reply. It was really helpful to
me.

  Regards,
S.Vellingiri.

Dear Friends,
      I am facing problem after removing comments.

   #! => should not remove from the source code , but I am using
ruby2ruby module to remove the comments. Is there any way to not remove
the #! line.

Please anyone help me to go ahed on this. Kindly let me know it.

  Regards,
S.vellingiri.

···

At 2009-09-01 07:12AM, "Arul hari" wrote:

--
Posted via http://www.ruby-forum.com/\.

8

s = "

···

On Sep 1, 2009, at 12:10 , Dylan wrote:

DOH! Can't believe I forgot that! :slight_smile: This should work:

http://pastie.org/602035

I'm sure there are plenty of other cases I've missed, lemme know and I
can add em.

#
"

You need to actually parse the file.

9

The obvious thing to do is to special case the shebang line. Since a
shebang can only occur on the first line of a source file, just
examine the first line before munging the source and if it's a
shebang, add it back after the munging is done.

Note that you'll have the same issue with magic encoding lines as
well. A magic encoding line can also occur on the 1st line (or 2nd
line if the 1st line is a shebang) and should also be preserved if
present. (This is a ruby 1.9 only feature, tho. If ruby 1.9
compatibility is important to you, ruby2ruby isn't going to work for
you for all kinds of other reasons....)

···

On 3/2/10, Arul hari <hariharan.spc@rediffmail.com> wrote:

Dear Friends,
      I am facing problem after removing comments.

   #! => should not remove from the source code , but I am using
ruby2ruby module to remove the comments. Is there any way to not remove
the #! line.

Please anyone help me to go ahed on this. Kindly let me know it.