Encoding.default_external = Encoding::UTF_8 Encoding.default_internal = Encoding::UTF_8

$LOAD_PATH.unshift File.join(File.dirname(__FILE__),‘lib’) require ‘active_support’ require ‘active_support/core_ext/class/attribute_accessors’ require ‘active_support/core_ext/module/delegation’ require ‘active_record’

This code is coming from activerecord-3.0.7/lib/active_record/railties/databases.rake namespace :db do

task :load_config do
  require 'active_record'
  ActiveRecord::Base.configurations = YAML.load_file("config/database.yml")
end

task :environment => :load_config do
  ActiveRecord::Base.establish_connection('default')
end

namespace :create do
  # desc 'Create all the local databases defined in config/database.yml'
  task :all => :load_config do
    ActiveRecord::Base.configurations.each_value do |config|
      # Skip entries that don't have a database key, such as the first entry here:
      #
      #  defaults: &defaults
      #    adapter: mysql
      #    username: root
      #    password:
      #    host: localhost
      #
      #  development:
      #    database: blog_development
      #    <<: *defaults
      next unless config['database']
      # Only connect to local databases
      local_database?(config) { create_database(config) }
    end
  end
end

desc 'Create the database from config/database.yml for the current default (use db:create:all to create all dbs in the config)'
task :create => :load_config do
  # Make the test database at the same time as the development one, if it exists

# if ‘default’.development? && ActiveRecord::Base.configurations

create_database(ActiveRecord::Base.configurations['default'])

# end # create_database(ActiveRecord::Base.configurations)

end

def create_database(config)
  begin
    if config['adapter'] =~ /sqlite/
      if File.exist?(config['database'])
        $stderr.puts "#{config['database']} already exists"
      else
        begin
          # Create the SQLite database
          ActiveRecord::Base.establish_connection(config)
          ActiveRecord::Base.connection
        rescue Exception => e
          $stderr.puts e, *(e.backtrace)
          $stderr.puts "Couldn't create database for #{config.inspect}"
        end
      end
      return # Skip the else clause of begin/rescue
    else
      ActiveRecord::Base.establish_connection(config)
      ActiveRecord::Base.connection
    end
  rescue
    case config['adapter']
    when /mysql/
      @charset   = ENV['CHARSET']   || 'utf8'
      @collation = ENV['COLLATION'] || 'utf8_unicode_ci'
      creation_options = {:charset => (config['charset'] || @charset), :collation => (config['collation'] || @collation)}
      error_class = config['adapter'] =~ /mysql2/ ? Mysql2::Error : Mysql::Error
      access_denied_error = 1045
      begin
        ActiveRecord::Base.establish_connection(config.merge('database' => nil))
        ActiveRecord::Base.connection.create_database(config['database'], creation_options)
        ActiveRecord::Base.establish_connection(config)
      rescue error_class => sqlerr
        if sqlerr.errno == access_denied_error
          print "#{sqlerr.error}. \nPlease provide the root password for your mysql installation\n>"
          root_password = $stdin.gets.strip
          grant_statement = "GRANT ALL PRIVILEGES ON #{config['database']}.* " \
            "TO '#{config['username']}'@'localhost' " \
            "IDENTIFIED BY '#{config['password']}' WITH GRANT OPTION;"
          ActiveRecord::Base.establish_connection(config.merge(
              'database' => nil, 'username' => 'root', 'password' => root_password))
          ActiveRecord::Base.connection.create_database(config['database'], creation_options)
          ActiveRecord::Base.connection.execute grant_statement
          ActiveRecord::Base.establish_connection(config)
        else
          $stderr.puts sqlerr.error
          $stderr.puts "Couldn't create database for #{config.inspect}, charset: #{config['charset'] || @charset}, collation: #{config['collation'] || @collation}"
          $stderr.puts "(if you set the charset manually, make sure you have a matching collation)" if config['charset']
        end
      end
    when 'postgresql'
      @encoding = config['encoding'] || ENV['CHARSET'] || 'utf8'
      begin
        ActiveRecord::Base.establish_connection(config.merge('database' => 'postgres', 'schema_search_path' => 'public'))
        ActiveRecord::Base.connection.create_database(config['database'], config.merge('encoding' => @encoding))
        ActiveRecord::Base.establish_connection(config)
      rescue Exception => e
        $stderr.puts e, *(e.backtrace)
        $stderr.puts "Couldn't create database for #{config.inspect}"
      end
    end
  else
    $stderr.puts "#{config['database']} already exists"
  end
end

namespace :drop do
  # desc 'Drops all the local databases defined in config/database.yml'
  task :all => :load_config do
    ActiveRecord::Base.configurations.each_value do |config|
      # Skip entries that don't have a database key
      next unless config['database']
      begin
        # Only connect to local databases
        local_database?(config) { drop_database(config) }
      rescue Exception => e
        $stderr.puts "Couldn't drop #{config['database']} : #{e.inspect}"
      end
    end
  end
end

desc 'Drops the database for the current default (use db:drop:all to drop all databases)'
task :drop => :load_config do
  config = ActiveRecord::Base.configurations['default' || 'development']
  begin
    drop_database(config)
  rescue Exception => e
    $stderr.puts "Couldn't drop #{config['database']} : #{e.inspect}"
  end
end

def local_database?(config, &block)
  if %w( 127.0.0.1 localhost ).include?(config['host']) || config['host'].blank?
    yield
  else
    $stderr.puts "This task only modifies local databases. #{config['database']} is on a remote host."
  end
end

desc "Migrate the database (options: VERSION=x, VERBOSE=false)."
task :migrate => :environment do
  ActiveRecord::Migration.verbose = ENV["VERBOSE"] ? ENV["VERBOSE"] == "true" : true
  ActiveRecord::Migrator.migrate("db/migrate/", ENV["VERSION"] ? ENV["VERSION"].to_i : nil)
  Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
end

namespace :migrate do
  # desc  'Rollbacks the database one migration and re migrate up (options: STEP=x, VERSION=x).'
  task :redo => :environment do
    if ENV["VERSION"]
      Rake::Task["db:migrate:down"].invoke
      Rake::Task["db:migrate:up"].invoke
    else
      Rake::Task["db:rollback"].invoke
      Rake::Task["db:migrate"].invoke
    end
  end

  # desc 'Resets your database using your migrations for the current environment'
  task :reset => ["db:drop", "db:create", "db:migrate"]

  # desc 'Runs the "up" for a given migration VERSION.'
  task :up => :environment do
    version = ENV["VERSION"] ? ENV["VERSION"].to_i : nil
    raise "VERSION is required" unless version
    ActiveRecord::Migrator.run(:up, "db/migrate/", version)
    Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
  end

  # desc 'Runs the "down" for a given migration VERSION.'
  task :down => :environment do
    version = ENV["VERSION"] ? ENV["VERSION"].to_i : nil
    raise "VERSION is required" unless version
    ActiveRecord::Migrator.run(:down, "db/migrate/", version)
    Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
  end

  desc "Display status of migrations"
  task :status => :environment do
    config = ActiveRecord::Base.configurations['default']
    ActiveRecord::Base.establish_connection(config)
    unless ActiveRecord::Base.connection.table_exists?(ActiveRecord::Migrator.schema_migrations_table_name)
      puts 'Schema migrations table does not exist yet.'
      next  # means "return" for rake task
    end
    db_list = ActiveRecord::Base.connection.select_values("SELECT version FROM #{ActiveRecord::Migrator.schema_migrations_table_name}")
    file_list = []
    Dir.foreach(File.join('db', 'migrate')) do |file|
      # only files matching "20091231235959_some_name.rb" pattern
      if match_data = /(\d{14})_(.+)\.rb/.match(file)
        status = db_list.delete(match_data[1]) ? 'up' : 'down'
        file_list << [status, match_data[1], match_data[2]]
      end
    end
    # output
    puts "\ndatabase: #{config['database']}\n\n"
    puts "#{"Status".center(8)}  #{"Migration ID".ljust(14)}  Migration Name"
    puts "-" * 50
    file_list.each do |file|
      puts "#{file[0].center(8)}  #{file[1].ljust(14)}  #{file[2].humanize}"
    end
    db_list.each do |version|
      puts "#{'up'.center(8)}  #{version.ljust(14)}  *** NO FILE ***"
    end
    puts
  end
end

desc 'Rolls the schema back to the previous version (specify steps w/ STEP=n).'
task :rollback => :environment do
  step = ENV['STEP'] ? ENV['STEP'].to_i : 1
  ActiveRecord::Migrator.rollback('db/migrate/', step)
  Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
end

# desc 'Pushes the schema to the next version (specify steps w/ STEP=n).'
task :forward => :environment do
  step = ENV['STEP'] ? ENV['STEP'].to_i : 1
  ActiveRecord::Migrator.forward('db/migrate/', step)
  Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
end

# desc 'Drops and recreates the database from db/schema.rb for the current environment and loads the seeds.'
task :reset => [ 'db:drop', 'db:setup' ]

# desc "Retrieves the charset for the current environment's database"
task :charset => :environment do
  config = ActiveRecord::Base.configurations['default' || 'development']
  case config['adapter']
  when /mysql/
    ActiveRecord::Base.establish_connection(config)
    puts ActiveRecord::Base.connection.charset
  when 'postgresql'
    ActiveRecord::Base.establish_connection(config)
    puts ActiveRecord::Base.connection.encoding
  when 'sqlite3'
    ActiveRecord::Base.establish_connection(config)
    puts ActiveRecord::Base.connection.encoding
  else
    $stderr.puts 'sorry, your database adapter is not supported yet, feel free to submit a patch'
  end
end

# desc "Retrieves the collation for the current environment's database"
task :collation => :environment do
  config = ActiveRecord::Base.configurations['default']
  case config['adapter']
  when /mysql/
    ActiveRecord::Base.establish_connection(config)
    puts ActiveRecord::Base.connection.collation
  else
    $stderr.puts 'sorry, your database adapter is not supported yet, feel free to submit a patch'
  end
end

desc "Retrieves the current schema version number"
task :version => :environment do
  puts "Current version: #{ActiveRecord::Migrator.current_version}"
end

# desc "Raises an error if there are pending migrations"
task :abort_if_pending_migrations => :environment do
  if defined? ActiveRecord
    pending_migrations = ActiveRecord::Migrator.new(:up, 'db/migrate').pending_migrations

    if pending_migrations.any?
      puts "You have #{pending_migrations.size} pending migrations:"
      pending_migrations.each do |pending_migration|
        puts '  %4d %s' % [pending_migration.version, pending_migration.name]
      end
      abort %{Run "rake db:migrate" to update your database then try again.}
    end
  end
end

desc 'Create the database, load the schema, and initialize with the seed data (use db:reset to also drop the db first)'
task :setup => [ 'db:create', 'db:schema:load', 'db:seed' ]

desc 'Load the seed data from db/seeds.rb'
task :seed => 'db:abort_if_pending_migrations' do
  seed_file = File.join('db', 'seeds.rb')
  load(seed_file) if File.exist?(seed_file)
end

namespace :fixtures do
  desc "Load fixtures into the current environment's database.  Load specific fixtures using FIXTURES=x,y. Load from subdirectory in test/fixtures using FIXTURES_DIR=z. Specify an alternative path (eg. spec/fixtures) using FIXTURES_PATH=spec/fixtures."
  task :load => :environment do
    require 'active_record/fixtures'

    ActiveRecord::Base.establish_connection('default')
    base_dir = ENV['FIXTURES_PATH'] ? File.join(ENV['FIXTURES_PATH']) : File.join('test', 'fixtures')
    fixtures_dir = ENV['FIXTURES_DIR'] ? File.join(base_dir, ENV['FIXTURES_DIR']) : base_dir

    (ENV['FIXTURES'] ? ENV['FIXTURES'].split(/,/).map {|f| File.join(fixtures_dir, f) } : Dir["#{fixtures_dir}/**/*.{yml,csv}"]).each do |fixture_file|
      ActiveRecord::Fixtures.create_fixtures(fixtures_dir, fixture_file[(fixtures_dir.size + 1)..-5])
    end
  end

  # desc "Search for a fixture given a LABEL or ID. Specify an alternative path (eg. spec/fixtures) using FIXTURES_PATH=spec/fixtures."
  task :identify => :environment do
    require 'active_record/fixtures'

    label, id = ENV["LABEL"], ENV["ID"]
    raise "LABEL or ID required" if label.blank? && id.blank?

    puts %Q(The fixture ID for "#{label}" is #{Fixtures.identify(label)}.) if label

    base_dir = ENV['FIXTURES_PATH'] ? File.join(ENV['FIXTURES_PATH']) : File.join('test', 'fixtures')
    Dir["#{base_dir}/**/*.yml"].each do |file|
      if data = YAML::load(ERB.new(IO.read(file)).result)
        data.keys.each do |key|
          key_id = Fixtures.identify(key)

          if key == label || key_id == id.to_i
            puts "#{file}: #{key} (#{key_id})"
          end
        end
      end
    end
  end
end

namespace :schema do
  desc "Create a db/schema.rb file that can be portably used against any DB supported by AR"
  task :dump => :environment do
    require 'active_record/schema_dumper'
    File.open(ENV['SCHEMA'] || "db/schema.rb", "w") do |file|
      ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, file)
    end
    Rake::Task["db:schema:dump"].reenable
  end

  desc "Load a schema.rb file into the database"
  task :load => :environment do
    file = ENV['SCHEMA'] || "db/schema.rb"
    if File.exists?(file)
      load(file)
    else
      abort %{#{file} doesn't exist yet. Run "rake db:migrate" to create it then try again. If you do not intend to use a database, you should instead alter config/application.rb to limit the frameworks that will be loaded}
    end
  end
end

namespace :structure do
  desc "Dump the database structure to an SQL file"
  task :dump => :environment do
    abcs = ActiveRecord::Base.configurations
    case abcs['default']["adapter"]
    when /mysql/, "oci", "oracle"
      ActiveRecord::Base.establish_connection(abcs['default'])
      File.open("db/#{'default'}_structure.sql", "w+") { |f| f << ActiveRecord::Base.connection.structure_dump }
    when "postgresql"
      ENV['PGHOST']     = abcs['default']["host"] if abcs['default']["host"]
      ENV['PGPORT']     = abcs['default']["port"].to_s if abcs['default']["port"]
      ENV['PGPASSWORD'] = abcs['default']["password"].to_s if abcs['default']["password"]
      search_path = abcs['default']["schema_search_path"]
      unless search_path.blank?
        search_path = search_path.split(",").map{|search_path| "--schema=#{search_path.strip}" }.join(" ")
      end
      `pg_dump -i -U "#{abcs['default']["username"]}" -s -x -O -f db/default_structure.sql #{search_path} #{abcs['default']["database"]}`
      raise "Error dumping database" if $?.exitstatus == 1
    when "sqlite", "sqlite3"
      dbfile = abcs['default']["database"] || abcs['default']["dbfile"]
      `#{abcs['default']["adapter"]} #{dbfile} .schema > db/#{'default'}_structure.sql`
    when "sqlserver"
      `scptxfr /s #{abcs['default']["host"]} /d #{abcs['default']["database"]} /I /f db\\#{'default'}_structure.sql /q /A /r`
      `scptxfr /s #{abcs['default']["host"]} /d #{abcs['default']["database"]} /I /F db\ /q /A /r`
    when "firebird"
      set_firebird_env(abcs['default'])
      db_string = firebird_db_string(abcs['default'])
      sh "isql -a #{db_string} > db/#{'default'}_structure.sql"
    else
      raise "Task not supported by '#{abcs['default']["adapter"]}'"
    end

    if ActiveRecord::Base.connection.supports_migrations?
      File.open("db/#{'default'}_structure.sql", "a") { |f| f << ActiveRecord::Base.connection.dump_schema_information }
    end
  end
end

namespace :test do
  # desc "Recreate the test database from the current schema.rb"
  task :load => 'db:test:purge' do
    ActiveRecord::Base.establish_connection(ActiveRecord::Base.configurations['test'])
    ActiveRecord::Schema.verbose = false
    Rake::Task["db:schema:load"].invoke
  end

  # desc "Recreate the test database from the current environment's database schema"
  task :clone => %w(db:schema:dump db:test:load)

  # desc "Recreate the test databases from the development structure"
  task :clone_structure => [ "db:structure:dump", "db:test:purge" ] do
    abcs = ActiveRecord::Base.configurations
    case abcs["test"]["adapter"]
    when /mysql/
      ActiveRecord::Base.establish_connection(:test)
      ActiveRecord::Base.connection.execute('SET foreign_key_checks = 0')
      IO.readlines("db/#{'default'}_structure.sql").join.split("\n\n").each do |table|
        ActiveRecord::Base.connection.execute(table)
      end
    when "postgresql"
      ENV['PGHOST']     = abcs["test"]["host"] if abcs["test"]["host"]
      ENV['PGPORT']     = abcs["test"]["port"].to_s if abcs["test"]["port"]
      ENV['PGPASSWORD'] = abcs["test"]["password"].to_s if abcs["test"]["password"]
      `psql -U "#{abcs["test"]["username"]}" -f db/#{'default'}_structure.sql #{abcs["test"]["database"]}`
    when "sqlite", "sqlite3"
      dbfile = abcs["test"]["database"] || abcs["test"]["dbfile"]
      `#{abcs["test"]["adapter"]} #{dbfile} < db/#{'default'}_structure.sql`
    when "sqlserver"
      `osql -E -S #{abcs["test"]["host"]} -d #{abcs["test"]["database"]} -i db\\#{'default'}_structure.sql`
    when "oci", "oracle"
      ActiveRecord::Base.establish_connection(:test)
      IO.readlines("db/#{'default'}_structure.sql").join.split(";\n\n").each do |ddl|
        ActiveRecord::Base.connection.execute(ddl)
      end
    when "firebird"
      set_firebird_env(abcs["test"])
      db_string = firebird_db_string(abcs["test"])
      sh "isql -i db/#{'default'}_structure.sql #{db_string}"
    else
      raise "Task not supported by '#{abcs["test"]["adapter"]}'"
    end
  end

  # desc "Empty the test database"
  task :purge => :environment do
    abcs = ActiveRecord::Base.configurations
    case abcs["test"]["adapter"]
    when /mysql/
      ActiveRecord::Base.establish_connection(:test)
      ActiveRecord::Base.connection.recreate_database(abcs["test"]["database"], abcs["test"])
    when "postgresql"
      ActiveRecord::Base.clear_active_connections!
      drop_database(abcs['test'])
      create_database(abcs['test'])
    when "sqlite","sqlite3"
      dbfile = abcs["test"]["database"] || abcs["test"]["dbfile"]
      File.delete(dbfile) if File.exist?(dbfile)
    when "sqlserver"
      dropfkscript = "#{abcs["test"]["host"]}.#{abcs["test"]["database"]}.DP1".gsub(/\\/,'-')
      `osql -E -S #{abcs["test"]["host"]} -d #{abcs["test"]["database"]} -i db\\#{dropfkscript}`
      `osql -E -S #{abcs["test"]["host"]} -d #{abcs["test"]["database"]} -i db\\#{'default'}_structure.sql`
    when "oci", "oracle"
      ActiveRecord::Base.establish_connection(:test)
      ActiveRecord::Base.connection.structure_drop.split(";\n\n").each do |ddl|
        ActiveRecord::Base.connection.execute(ddl)
      end
    when "firebird"
      ActiveRecord::Base.establish_connection(:test)
      ActiveRecord::Base.connection.recreate_database!
    else
      raise "Task not supported by '#{abcs["test"]["adapter"]}'"
    end
  end

  # desc 'Check for pending migrations and load the test schema'
  task :prepare => 'db:abort_if_pending_migrations' do
    if defined?(ActiveRecord) && !ActiveRecord::Base.configurations.blank?
      Rake::Task[{ :sql  => "db:test:clone_structure", :ruby => "db:test:load" }[ActiveRecord::Base.schema_format]].invoke
    end
  end
end

namespace :sessions do
  # desc "Creates a sessions migration for use with ActiveRecord::SessionStore"
  task :create => :environment do
    raise "Task unavailable to this database (no migration support)" unless ActiveRecord::Base.connection.supports_migrations?
    require 'rails/generators'
    Rails::Generators.configure!
    require 'rails/generators/rails/session_migration/session_migration_generator'
    Rails::Generators::SessionMigrationGenerator.start [ ENV["MIGRATION"] || "add_sessions_table" ]
  end

  # desc "Clear the sessions table"
  task :clear => :environment do
    ActiveRecord::Base.connection.execute "DELETE FROM #{session_table_name}"
  end
end

end

task ‘test:prepare’ => ‘db:test:prepare’

def drop_database(config)

case config['adapter']
when /mysql/
  ActiveRecord::Base.establish_connection(config)
  ActiveRecord::Base.connection.drop_database config['database']
when /^sqlite/
  require 'pathname'
  path = Pathname.new(config['database'])
  file = path.absolute? ? path.to_s : File.join( path)

  FileUtils.rm(file)
when 'postgresql'
  ActiveRecord::Base.establish_connection(config.merge('database' => 'postgres', 'schema_search_path' => 'public'))
  ActiveRecord::Base.connection.drop_database config['database']
end

end

def session_table_name

ActiveRecord::SessionStore::Session.table_name

end

def set_firebird_env(config)

ENV["ISC_USER"]     = config["username"].to_s if config["username"]
ENV["ISC_PASSWORD"] = config["password"].to_s if config["password"]

end

def firebird_db_string(config)

FireRuby::Database.db_string_for(config.symbolize_keys)

end