CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3rubygems
shiva
shiva

Reputation: 434

Parse the gemfile and get all the gems used in rails project

Im writing a script to get all gems from the gemfile from a rails project.Script goes something like this

     @gem_file_path=File.expand_path('../Gemfile', __FILE__) || ENV['BUNDLE_GEMFILE']      ||  Dir.pwd + "/Gemfile"
     File.open(gem_file_path).read.each_line do |i|
 i=i.split
      if i[0] == "gem" && i[0].start_with?("gem")
        name = i[1].gsub(",","") 
        gem_name= eval name
        author_email_id=Gem::Specification.find_by_name(gem_name.to_s).email
        author_name=Gem::Specification.find_by_name(gem_name).author
      end
     end

Is there a better way to do it ? Because i also get issues when something like below is mentioned in gemfile and other possibilities too

        gem 'rspec-rails',:group => [:test,:development]

Thanks

Upvotes: 3

Views: 2909

Answers (4)

Brilliant-DucN
Brilliant-DucN

Reputation: 724

Just in case you want to parse from Gemfile.lock given. Then the below is a tip for me:

Bundler::LockfileParser.new(Bundler.read_file("Gemfile.lock"))

Upvotes: 1

OOrion
OOrion

Reputation: 85

For anyone stumbling across this question years later like myself, I found that you can get access to the gems referenced in the Gemfile without actually running the gemfile by doing something like the following:

Bundler::Definition.build('Gemfile', nil, {}).dependencies

'Gemfile' here should be the path to the Gemfile from the current file.

Credit goes to Troy Verbrugge for digging into the bundler code.

Upvotes: 6

Pandya M. Nandan
Pandya M. Nandan

Reputation: 682

use something like this:

repos = Gem.loaded_specs.values
repos.each do |repo|
  g_em = repo.name
  s_ource = repo.source
end

Upvotes: 2

Philip Hallstrom
Philip Hallstrom

Reputation: 19879

Gemnasium-parser might be a good solution

https://github.com/gemnasium/gemnasium-parser

You can also use Bundler to do it directly, but you run the risk of evaluating ruby code you don't know is in there.

You can also use Bundler to parse the Gemfile.lock which avoids the eval issue.

Upvotes: 0

Related Questions