From: Chris Carter <cdcarter@...>
Date: 2007-07-13T02:31:21+09:00
Subject: Re: Yet another site_ruby question...

On 7/12/07, Daniel Jewett <dan@solidether.net> wrote:
> In article
> <86987bdf0707121014q884fa0dld5f91258a5d345e1@mail.gmail.com>, Chris
> Carter <cdcarter@gmail.com> wrote:
>
> > On 7/12/07, Daniel Jewett <dan@solidether.net> wrote:
> > > In article
> > > <86987bdf0707120938r7121cb59o3404386a44758cf8@mail.gmail.com>, Chris
> > > Carter <cdcarter@gmail.com> wrote:
> > >
> > > > On 7/12/07, Daniel Jewett <dan@solidether.net> wrote:
> > > > > Hello all,
> > > > >
> > > > > Here's the LOAD_PATH for my desktop:
> > > > > /usr/local/lib/ruby/site_ruby/1.8
> > > > > /usr/local/lib/ruby/site_ruby/1.8/powerpc-darwin8.10.0
> > > > > /usr/local/lib/ruby/site_ruby
> > > > > /usr/local/lib/ruby/1.8
> > > > > /usr/local/lib/ruby/1.8/powerpc-darwin8.10.0
> > > > > .
> > > > >
> > > > > Here's the LOAD_PATH for my laptop:
> > > > > /usr/local/lib/ruby/site_ruby/1.8
> > > > > /usr/local/lib/ruby/site_ruby/1.8/i686-darwin8.9.1
> > > > > /usr/local/lib/ruby/site_ruby
> > > > > /usr/local/lib/ruby/1.8
> > > > > /usr/local/lib/ruby/1.8/i686-darwin8.9.1
> > > > > .
> > > > >
> > > > > Installed gem 'flacinfo-rb' and the path looks like this on both
> > > > > machines:
> > > > > /usr/local/lib/ruby/gems/1.8/gems/flacinfo-rb-0.3/flacinfo.rb
> > > > > (although I would have expected to find it here:
> > > > > /usr/local/lib/ruby/site_ruby/1.8/flacinfo.rb)
> > > > >
> > > > > On my laptop success with:
> > > > > irb(main):001:0> require 'flacinfo'
> > > > > => true
> > > > >
> > > > > On my desktop this:
> > > > > irb(main):001:0> require 'flacinfo'
> > > > > LoadError: no such file to load -- flacinfo
> > > > >         from (irb):1:in `require'
> > > > >         from (irb):1
> > > > >
> > > > > If I move the gem to site_ruby on my desktop, the load succeeds. My
> > > > > question is why the inconsistency?
> > > > > If the install location is incorrect why does require work on one
> > > > > machine and not the other?
> > > > >
> > > > > Here's the result of the install command on both machines:
> > > > > Successfully installed flacinfo-rb-0.3
> > > > > Installing ri documentation for flacinfo-rb-0.3...
> > > > > File not found: lib
> > > > >
> > > > > Is that last bit significant?
> > > > >
> > > > > Thanks for any info,
> > > > > Dan J.
> > > > >
> > > > >
> > > >
> > > >
> > > > You need to require 'rubygems' first.  This probably isn't required
> > > > because you have RUBYOPT set on your desktop, but not your laptop
> > >
> > > Thanks Chris,
> > > I did try that...
> > >
> > > irb(main):001:0> require 'rubygems'
> > > => true
> > > irb(main):002:0> require 'flacinfo'
> > > LoadError: no such file to load -- flacinfo
> > >         from
> > > /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
> > > `gem_original_require'
> > >         from
> > > /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
> > > `require'
> > >         from (irb):2
> > >
> > > This isn't necessarily a show stopper, because of course I can just
> > > move the library, but I'm trying to understand the process.
> > >
> > > Dan
> > >
> > >
> >
> > How about:
> > require 'rubygems'
> > require 'flacinfo-rb'
> >
> > ?
>
> Yeah, I tried that too. The load succeeds but then the methods fail:
> Should work like this:
>
> irb(main):001:0> require 'flacinfo'
> => true
> irb(main):002:0> song = FlacInfo.new("dread.flac")
> => #<FlacInfo:0x19208 (STREAMINFO size=34 offset=8) (SEEKTABLE size=486
> offset=46) (VORBIS_COMMENT size=235 offset=536) (PADDING size=4065
> offset=775)>
> irb(main):003:0> song.print_tags
> ARTIST: 10cc
> TRACKNUMBER: 01
> DATE: 1978
> vendor_tag: reference libFLAC 1.1.2 20050205
> ALBUM: Bloody Tourists
> TOTALTRACKS: 13
> TITLE: Dreadlock Holiday
> YEAR: 1978
> GENRE: Rock
> offset: 536
> block_size: 235
> COMMENT: High Quality, EAC secure, Lossless flac
> => nil
>
> But instead I get:
>
> irb(main):001:0> require 'rubygems'
> => true
> irb(main):002:0> gem 'flacinfo-rb'
> => true
> irb(main):003:0> song = FlacInfo.new("dread.flac")
> NameError: uninitialized constant FlacInfo
>         from (irb):3
>
>

require 'flacinfo' (or 'flacinfo-rb') after the gem line.  'gem' just
activates the gem, you still need to require it.

-- 
Chris Carter
concentrationstudios.com
brynmawrcs.com