# Workaround for JRUBY-6970 (https://jira.codehaus.org/browse/JRUBY-6970)
# taken from the Logstash project, see:
# <https://github.com/logstash/logstash/blob/master/lib/logstash/JRUBY-6970.rb>
#
# Monkeypatch for JRUBY-6970
module Kernel
  alias_method :require_JRUBY_6970_hack, :require

  def require(path)
    # Needed because otherwise we might require faraday/request twice and then
    # we have a superclass mismatch
    # https://groups.google.com/forum/#!msg/jruby-users/-lG4Fc2-3UA/bM0cIR_wRr8J
    if path.include?('faraday/request') && defined?(Faraday::Request)
      return false
    end

    if path =~ /^jar:file:.+!.+/
      path = path.gsub(/^jar:/, "")
      puts "JRUBY-6970: require(#{path})" if ENV["REQUIRE_DEBUG"] == "1"
    end

    # JRUBY-7065
    path = File.expand_path(path) if path.include?("/../")
    rc = require_JRUBY_6970_hack(path)

    # Only monkeypatch openssl after it's been loaded.
    if path == "openssl"
      require "lookout/jruby/jruby-6970-openssl"
    end
    return rc
  end
end

# Work around for a bug in File.expand_path that doesn't account for resources
# in jar paths.
#
# Should solve this error:
#   Exception in thread "LogStash::Runner" org.jruby.exceptions.RaiseException:
#   (Errno::ENOENT) file:/home/jls/projects/logstash/build/data/unicode.data
class File
  class << self
    alias_method :expand_path_JRUBY_6970, :expand_path

    def expand_path(path, dir=nil)
      #p :expand_path => [path, dir]
      if path =~ /(jar:)?file:\/.*\.jar!/
        #p :expand_path_path => [path, dir]
        jar, resource = path.split("!", 2)
        #p :expand_path => [jar, resource]
        if resource.nil? || resource == ""
          # Nothing after the "!", nothing special to handle.
          return expand_path_JRUBY_6970(path, dir)
        else
          resource = expand_path_JRUBY_6970(resource, dir)
          # TODO(sissel): use LogStash::Util::UNAME
          if RbConfig::CONFIG["host_os"] == "mswin32"
            # 'expand_path' on "/" will return "C:/" on windows.
            # So like.. we don't want that because technically this
            # is the root of the jar, not of a disk.
            puts :expand_path => [path, "#{jar}!#{resource.gsub(/^[A-Za-z]:/, "")}"]
            return "#{jar}!#{resource.gsub(/^[A-Za-z]:/, "")}"
          else
            return "#{jar}!#{resource}"
          end
        end
      elsif dir.to_s =~ /(jar:)?file:\/.*\.jar!/
        jar, dir = dir.to_s.split("!", 2)
        if dir.empty?
          # sometimes the original dir is just 'file:/foo.jar!'
          return File.join("#{jar}!", path)
        end
        return "#{jar}!#{expand_path_JRUBY_6970(path, dir)}"
      else
        return expand_path_JRUBY_6970(path, dir)
      end
    end
  end
end