I want to be able to "union" some load paths. Eg. given
lib/facets/more
lib/facets/core
I'd like to be able to do
require 'facets/foo.rb'
And have it search both more/ and core/ for foo.rb.
What's the best way to achieve this?
T.
Usually you do
require 'facets/foo'
and have a file "xyz.rb" in facets that will link "more/foo.rb" or "core/foo.rb" depending on where it's located.
You could as well do this: create a file "facets.rb" in the same directory that holds "facets" (i.e. lib). Inside of that you do
def frequire(*names)
names.each do |name|
%w{more core}.any? do |base|
begin
require "facets/#{base}/#{name}"
true
rescue
false
end
end or raise LoadError, "Did not find #{name}"
end
end
Or something similar.
robert
···
On 08.08.2006 18:06, Trans wrote:
I want to be able to "union" some load paths. Eg. given
lib/facets/more
lib/facets/coreI'd like to be able to do
require 'facets/foo.rb'
And have it search both more/ and core/ for foo.rb.
cd facets
for each in ../facets/*/*.rb
do ln -s $each
done
···
On Aug 8, 2006, at 12:10 PM, Trans wrote:
I want to be able to "union" some load paths. Eg. given
lib/facets/more
lib/facets/coreI'd like to be able to do
require 'facets/foo.rb'
And have it search both more/ and core/ for foo.rb.
What's the best way to achieve this?
T.
fr trans:
# I'd like to be able to do
···
#
# require 'facets/foo.rb'
#
# And have it search both more/ and core/ for foo.rb.
#
# What's the best way to achieve this?
modify require to accept -r (recursive) option 
Hi,
At Wed, 9 Aug 2006 01:10:11 +0900,
Trans wrote in [ruby-talk:207056]:
I want to be able to "union" some load paths. Eg. given
lib/facets/more
lib/facets/coreI'd like to be able to do
require 'facets/foo.rb'
And have it search both more/ and core/ for foo.rb.
By moving them to
lib/facets/more/facets/foo.rb
lib/facets/core/facets/foo.rb
and appending lib/facets/more and lib/facets/core to $:.
···
--
Nobu Nakada
Logan Capaldo wrote:
cd facets
for each in ../facets/*/*.rb
do ln -s $each
done
Unfortuately that's not cross-platform.
T.
Robert Klemme wrote:
> I want to be able to "union" some load paths. Eg. given
>
> lib/facets/more
> lib/facets/core
>
> I'd like to be able to do
>
> require 'facets/foo.rb'
>
> And have it search both more/ and core/ for foo.rb.Usually you do
require 'facets/foo'
and have a file "xyz.rb" in facets that will link "more/foo.rb" or
"core/foo.rb" depending on where it's located.
Yes, currently I a separate directory facet/ that I build automatically
which contains nothing but require redirections: Eg. facet/foo.rb
contains "require 'facets/core/foo.rb'". But there are a lot of files
and I find it rather wasteful solution --at tlease two requires for
every one. Plus I have to use a slighly different name -- 'facet'
instead of 'facets'.
You could as well do this: create a file "facets.rb" in the same
directory that holds "facets" (i.e. lib). Inside of that you dodef frequire(*names)
names.each do |name|
%w{more core}.any? do |base|
begin
require "facets/#{base}/#{name}"
true
rescue
false
end
end or raise LoadError, "Did not find #{name}"
end
end
I don't want a seprate method, but I have consieder overriding
#require. I just hoping there might be a better clever way. I hear
Python supports .pth files which can redirect whole path reference to
anther location. I wonder if Ruby could support something like this?
T.
···
On 08.08.2006 18:06, Trans wrote:
nobu@ruby-lang.org wrote:
Hi,
At Wed, 9 Aug 2006 01:10:11 +0900,
Trans wrote in [ruby-talk:207056]:
> I want to be able to "union" some load paths. Eg. given
>
> lib/facets/more
> lib/facets/core
>
> I'd like to be able to do
>
> require 'facets/foo.rb'
>
> And have it search both more/ and core/ for foo.rb.By moving them to
lib/facets/more/facets/foo.rb
lib/facets/core/facets/foo.rb
and appending lib/facets/more and lib/facets/core to $:.
BTW, that is nice solution, even if it is a bit lengthly when it comes
to the path names. Unfortunately Facets has no central require in which
I can append the paths to $:. Maybe it needs to. We'll see.
Thanks,
T.
···
--
Nobu Nakada
Trans wrote:
I don't want a seprate method, but I have consieder overriding
#require.
I'm not sure I would not go down that road. Gems do it and from what I read this caused some problems in the past.
> I just hoping there might be a better clever way. I hear
Python supports .pth files which can redirect whole path reference to
anther location. I wonder if Ruby could support something like this?
Dunno. How does it work?
robert
Make a rake task to do it? But instead of ln -s just spit out
require 'facets/foo/foo.rb'
into a file. Ok it's a hack, but require ain't exactly Java's import or C#'s using (which is a good thing, IMO).
If you do want this, and you want to do it the "right" (where "right" meets my definition of "right" 
) way, I think your best bet is build a package/module system, and make it clear that what you are doing is a little smarter than require (aka load_once_if_you_dont_trick_me_somehow_anyway)
e.g.:
require 'facets/manager'
import 'factes.foo.*'
Or whatever you want the interface to be.
And you can add your .pth type features to this, etc.
···
On Aug 8, 2006, at 3:40 PM, Trans wrote:
Logan Capaldo wrote:
cd facets
for each in ../facets/*/*.rb
do ln -s $each
doneUnfortuately that's not cross-platform.
T.