From: Jim Freeze <jim@...>
Date: 2003-11-07T00:25:38+09:00
Subject: Using blocks in C (with File.open)

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
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