Using blocks in C (with File.open)

ruby-talk
1

Hi:

I have written some code in Ruby to parse a file and yield
items inside the file. It looks something like this:

def each(file)_
File.open(file) { |f|
# Do work here
}
end

To speed this up, I have written this in C. However, my original
version had the File.open() {} code in Ruby.
I am now writing that in C, don’t know how to use the block
methodology so the file will automatically close.

Below is what I currently have:

static VALUE
each(self, filename)
VALUE self, filename;
{
VALUE f = rb_file_open(filename, rb_str_new2(“r”));

/* do work here */

rb_io_close(f);

}

Can someone provide sample code of how use File.open and
blocks in C?

Thanks

···

–
Jim Freeze

Money is better than poverty, if only for financial reasons.

2

Can someone provide sample code of how use File.open and
blocks in C?

    static VALUE
    do_work_here(file)
        VALUE file;
    {
        /* do work here */
        return Qnil;
    }

  static VALUE
  each(self, filename)
  VALUE self, filename;
  {
    VALUE f = rb_file_open(filename, rb_str_new2("r"));

       return rb_ensure(do_work_here, f, rb_io_close, f);

  }

Guy Decoux