1 files changed, 56 insertions, 2 deletions
diff --git a/tool/lib/bundled_gem.rb b/tool/lib/bundled_gem.rb
index 46183ba06c..d870925d05 100644
--- a/tool/lib/bundled_gem.rb
+++ b/tool/lib/bundled_gem.rb
@@ -6,12 +6,27 @@ require 'rubygems/package'
 # unpack bundled gem files.
 
 module BundledGem
+  DEFAULT_GEMS_DEPENDENCIES = [
+    "net-protocol", # net-ftp
+    "time", # net-ftp
+    "singleton", # prime
+    "ipaddr", # rinda
+    "forwardable", # prime, rinda
+    "strscan" # rexml
+  ]
+
   module_function
 
   def unpack(file, *rest)
     pkg = Gem::Package.new(file)
     prepare_test(pkg.spec, *rest) {|dir| pkg.extract_files(dir)}
     puts "Unpacked #{file}"
+  rescue Gem::Package::FormatError, Errno::ENOENT
+    puts "Try with hash version of bundled gems instead of #{file}. We don't use this gem with release version of Ruby."
+    if file =~ /^gems\/(\w+)-/
+      file = Dir.glob("gems/#{$1}-*.gem").first
+    end
+    retry
   end
 
   def build(gemspec, version, outdir = ".", validation: true)
@@ -20,10 +35,11 @@ module BundledGem
     Dir.chdir(gemdir) do
       spec = Gem::Specification.load(gemfile)
       abort "Failed to load #{gemspec}" unless spec
-      abort "Unexpected version #{spec.version}" unless spec.version == Gem::Version.new(version)
       output = File.join(outdir, spec.file_name)
       FileUtils.rm_rf(output)
-      Gem::Package.build(spec, validation == false, validation, output)
+      package = Gem::Package.new(output)
+      package.spec = spec
+      package.build(validation == false)
     end
   end
 
@@ -48,6 +64,9 @@ module BundledGem
     gem_dir = File.join(dir, "gems", target)
     yield gem_dir
     spec_dir = spec.extensions.empty? ? "specifications" : File.join("gems", target)
+    if spec.extensions.empty?
+      spec.dependencies.reject! {|dep| DEFAULT_GEMS_DEPENDENCIES.include?(dep.name)}
+    end
     File.binwrite(File.join(dir, spec_dir, "#{target}.gemspec"), spec.to_ruby)
     unless spec.extensions.empty?
       spec.dependencies.clear
@@ -65,4 +84,39 @@ module BundledGem
     end
     FileUtils.rm_rf(Dir.glob("#{gem_dir}/.git*"))
   end
+
+  def dummy_gemspec(gemspec)
+    return if File.exist?(gemspec)
+    gemdir, gemfile = File.split(gemspec)
+    Dir.chdir(gemdir) do
+      spec = Gem::Specification.new do |s|
+        s.name = gemfile.chomp(".gemspec")
+        s.version =
+          File.read("lib/#{s.name}.rb")[/VERSION = "(.+?)"/, 1] ||
+          begin File.read("lib/#{s.name}/version.rb")[/VERSION = "(.+?)"/, 1]; rescue; nil; end ||
+          raise("cannot find the version of #{ s.name } gem")
+        s.authors = ["DUMMY"]
+        s.email = ["dummy@ruby-lang.org"]
+        s.files = Dir.glob("{lib,ext}/**/*").select {|f| File.file?(f)}
+        s.licenses = ["Ruby"]
+        s.description = "DO NOT USE; dummy gemspec only for test"
+        s.summary = "(dummy gemspec)"
+      end
+      File.write(gemfile, spec.to_ruby)
+    end
+  end
+
+  def checkout(gemdir, repo, rev, git: $git)
+    return unless rev or !git or git.empty?
+    unless File.exist?("#{gemdir}/.git")
+      puts "Cloning #{repo}"
+      command = "#{git} clone #{repo} #{gemdir}"
+      system(command) or raise "failed: #{command}"
+    end
+    puts "Update #{File.basename(gemdir)} to #{rev}"
+    command = "#{git} fetch origin #{rev}"
+    system(command, chdir: gemdir) or raise "failed: #{command}"
+    command = "#{git} checkout --detach #{rev}"
+    system(command, chdir: gemdir) or raise "failed: #{command}"
+  end
 end