From: Tom Sawyer <transami@...>
Date: 2003-01-22T13:50:19+09:00
Subject: Re: 'require' search path

On Tuesday 14 January 2003 05:59 am, Tom Sawyer wrote:
>   alias :require_basic :require
>   def require(file_or_directory)
>     begin
>       fp = File.expand_path(File.dirname(caller[0]))
>       $: << fp
>       r = require_basic file_or_directory
>       i = $:.index(fp)
>       $:.delete_at(i) if i
>       return r
>     rescue
>       if FileTest.directory?(file_or_directory)
>         require "#{file_or_directory}/#{file_or_directory}"
>       else
>         raise
>       end
>     end
>   end
>

i have just run into a potential conflict. i named a file to require 'DBI.rb'. 
of course the problem with this is that it could require the typical DBI 
library rather than my file. (actually not in this case but it becomes 
conceivable in other cases) of course i could rename my file to avoid such a 
conflict, but that means being very aware of the fact that DBI (or other lib) 
exists. so i have taken up the alternate suggestion:

  def import(file_name)
    require File.join(File.dirname(caller[0]), file_name)
  end

  alias :require_basic :require
  def require(file_or_directory)
    begin
      require_basic file_or_directory
    rescue
      if FileTest.directory?(file_or_directory)
        require "#{file_or_directory}/#{file_or_directory}"
      else
        raise
      end
    end
  end

-- 
tom sawyer, aka transami
transami@transami.net


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