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authorJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-16 18:49:26 +0900
committerJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-30 00:39:06 +0900
commitfcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch)
tree64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/lib/rubygems/commands/lock_command.rb
Fresh start
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diff --git a/jni/ruby/lib/rubygems/commands/lock_command.rb b/jni/ruby/lib/rubygems/commands/lock_command.rb
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+require 'rubygems/command'
+
+class Gem::Commands::LockCommand < Gem::Command
+
+ def initialize
+ super 'lock', 'Generate a lockdown list of gems',
+ :strict => false
+
+ add_option '-s', '--[no-]strict',
+ 'fail if unable to satisfy a dependency' do |strict, options|
+ options[:strict] = strict
+ end
+ end
+
+ def arguments # :nodoc:
+ "GEMNAME name of gem to lock\nVERSION version of gem to lock"
+ end
+
+ def defaults_str # :nodoc:
+ "--no-strict"
+ end
+
+ def description # :nodoc:
+ <<-EOF
+The lock command will generate a list of +gem+ statements that will lock down
+the versions for the gem given in the command line. It will specify exact
+versions in the requirements list to ensure that the gems loaded will always
+be consistent. A full recursive search of all effected gems will be
+generated.
+
+Example:
+
+ gem lock rails-1.0.0 > lockdown.rb
+
+will produce in lockdown.rb:
+
+ require "rubygems"
+ gem 'rails', '= 1.0.0'
+ gem 'rake', '= 0.7.0.1'
+ gem 'activesupport', '= 1.2.5'
+ gem 'activerecord', '= 1.13.2'
+ gem 'actionpack', '= 1.11.2'
+ gem 'actionmailer', '= 1.1.5'
+ gem 'actionwebservice', '= 1.0.0'
+
+Just load lockdown.rb from your application to ensure that the current
+versions are loaded. Make sure that lockdown.rb is loaded *before* any
+other require statements.
+
+Notice that rails 1.0.0 only requires that rake 0.6.2 or better be used.
+Rake-0.7.0.1 is the most recent version installed that satisfies that, so we
+lock it down to the exact version.
+ EOF
+ end
+
+ def usage # :nodoc:
+ "#{program_name} GEMNAME-VERSION [GEMNAME-VERSION ...]"
+ end
+
+ def complain(message)
+ if options[:strict] then
+ raise Gem::Exception, message
+ else
+ say "# #{message}"
+ end
+ end
+
+ def execute
+ say "require 'rubygems'"
+
+ locked = {}
+
+ pending = options[:args]
+
+ until pending.empty? do
+ full_name = pending.shift
+
+ spec = Gem::Specification.load spec_path(full_name)
+
+ if spec.nil? then
+ complain "Could not find gem #{full_name}, try using the full name"
+ next
+ end
+
+ say "gem '#{spec.name}', '= #{spec.version}'" unless locked[spec.name]
+ locked[spec.name] = true
+
+ spec.runtime_dependencies.each do |dep|
+ next if locked[dep.name]
+ candidates = dep.matching_specs
+
+ if candidates.empty? then
+ complain "Unable to satisfy '#{dep}' from currently installed gems"
+ else
+ pending << candidates.last.full_name
+ end
+ end
+ end
+ end
+
+ def spec_path(gem_full_name)
+ gemspecs = Gem.path.map { |path|
+ File.join path, "specifications", "#{gem_full_name}.gemspec"
+ }
+
+ gemspecs.find { |path| File.exist? path }
+ end
+
+end
+