Merge bundler to standard libraries.

  rubygems 2.7.x depends bundler-1.15.x. This is preparation for
  rubygems and bundler migration.

  * lib/bundler.rb, lib/bundler/*: files of bundler-1.15.4
  * spec/bundler/*: rspec examples of bundler-1.15.4. I applied patches.
    * https://github.com/bundler/bundler/pull/6007
    * Exclude not working examples on ruby repository.
    * Fake ruby interpriter instead of installed ruby.
  * Makefile.in: Added test task named `test-bundler`. This task is only
    working macOS/linux yet. I'm going to support Windows environment later.
  * tool/sync_default_gems.rb: Added sync task for bundler.

  [Feature #12733][ruby-core:77172]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59779 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 126 insertions, 0 deletions

diff --git a/lib/bundler/friendly_errors.rb b/lib/bundler/friendly_errors.rb
new file mode 100644
index 0000000000..3ba3dcdd91
--- /dev/null
+++ b/lib/bundler/friendly_errors.rb
@@ -0,0 +1,126 @@
+# encoding: utf-8
+# frozen_string_literal: true
+require "cgi"
+require "bundler/vendored_thor"
+
+module Bundler
+  module FriendlyErrors
+  module_function
+
+    def log_error(error)
+      case error
+      when YamlSyntaxError
+        Bundler.ui.error error.message
+        Bundler.ui.trace error.orig_exception
+      when Dsl::DSLError, GemspecError
+        Bundler.ui.error error.message
+      when GemRequireError
+        Bundler.ui.error error.message
+        Bundler.ui.trace error.orig_exception, nil, true
+      when BundlerError
+        Bundler.ui.error error.message, :wrap => true
+        Bundler.ui.trace error
+      when Thor::Error
+        Bundler.ui.error error.message
+      when LoadError
+        raise error unless error.message =~ /cannot load such file -- openssl|openssl.so|libcrypto.so/
+        Bundler.ui.error "\nCould not load OpenSSL."
+        Bundler.ui.warn <<-WARN, :wrap => true
+          You must recompile Ruby with OpenSSL support or change the sources in your \
+          Gemfile from 'https' to 'http'. Instructions for compiling with OpenSSL \
+          using RVM are available at http://rvm.io/packages/openssl.
+        WARN
+        Bundler.ui.trace error
+      when Interrupt
+        Bundler.ui.error "\nQuitting..."
+        Bundler.ui.trace error
+      when Gem::InvalidSpecificationException
+        Bundler.ui.error error.message, :wrap => true
+      when SystemExit
+      when *[defined?(Java::JavaLang::OutOfMemoryError) && Java::JavaLang::OutOfMemoryError].compact
+        Bundler.ui.error "\nYour JVM has run out of memory, and Bundler cannot continue. " \
+          "You can decrease the amount of memory Bundler needs by removing gems from your Gemfile, " \
+          "especially large gems. (Gems can be as large as hundreds of megabytes, and Bundler has to read those files!). " \
+          "Alternatively, you can increase the amount of memory the JVM is able to use by running Bundler with jruby -J-Xmx1024m -S bundle (JRuby defaults to 500MB)."
+      else request_issue_report_for(error)
+      end
+    end
+
+    def exit_status(error)
+      case error
+      when BundlerError then error.status_code
+      when Thor::Error then 15
+      when SystemExit then error.status
+      else 1
+      end
+    end
+
+    def request_issue_report_for(e)
+      Bundler.ui.info <<-EOS.gsub(/^ {8}/, "")
+        --- ERROR REPORT TEMPLATE -------------------------------------------------------
+        # Error Report
+
+        ## Questions
+
+        Please fill out answers to these questions, it'll help us figure out
+        why things are going wrong.
+
+        - **What did you do?**
+
+          I ran the command `#{$PROGRAM_NAME} #{ARGV.join(" ")}`
+
+        - **What did you expect to happen?**
+
+          I expected Bundler to...
+
+        - **What happened instead?**
+
+          Instead, what happened was...
+
+        - **Have you tried any solutions posted on similar issues in our issue tracker, stack overflow, or google?**
+
+          I tried...
+
+        - **Have you read our issues document, https://github.com/bundler/bundler/blob/master/doc/contributing/ISSUES.md?**
+
+          ...
+
+        ## Backtrace
+
+        ```
+        #{e.class}: #{e.message}
+          #{e.backtrace && e.backtrace.join("\n          ").chomp}
+        ```
+
+        #{Bundler::Env.new.report}
+        --- TEMPLATE END ----------------------------------------------------------------
+
+      EOS
+
+      Bundler.ui.error "Unfortunately, an unexpected error occurred, and Bundler cannot continue."
+
+      Bundler.ui.warn <<-EOS.gsub(/^ {8}/, "")
+
+        First, try this link to see if there are any existing issue reports for this error:
+        #{issues_url(e)}
+
+        If there aren't any reports for this error yet, please create copy and paste the report template above into a new issue. Don't forget to anonymize any private data! The new issue form is located at:
+        https://github.com/bundler/bundler/issues/new
+      EOS
+    end
+
+    def issues_url(exception)
+      message = exception.message.lines.first.tr(":", " ").chomp
+      message = message.split("-").first if exception.is_a?(Errno)
+      "https://github.com/bundler/bundler/search?q=" \
+        "#{CGI.escape(message)}&type=Issues"
+    end
+  end
+
+  def self.with_friendly_errors
+    yield
+  rescue Exception => e
+    FriendlyErrors.log_error(e)
+    exit FriendlyErrors.exit_status(e)
+  end
+end