require 'erb' require 'yaml' require 'optparse' require 'rbconfig' module Rails class DBConsole attr_reader :arguments, :config def self.start new(config).start end def self.config config = begin YAML.load(ERB.new(IO.read("config/database.yml")).result) rescue SyntaxError, StandardError require APP_PATH Rails.application.config.database_configuration end unless config[env] abort "No database is configured for the environment '#{env}'" end config[env] end def self.env if Rails.respond_to?(:env) Rails.env else ENV["RAILS_ENV"] || ENV["RACK_ENV"] || "development" end end def initialize(config, arguments = ARGV) @config, @arguments = config, arguments end def start include_password = false options = {} OptionParser.new do |opt| opt.banner = "Usage: rails dbconsole [environment] [options]" opt.on("-p", "--include-password", "Automatically provide the password from database.yml") do |v| include_password = true end opt.on("--mode [MODE]", ['html', 'list', 'line', 'column'], "Automatically put the sqlite3 database in the specified mode (html, list, line, column).") do |mode| options['mode'] = mode end opt.on("--header") do |h| options['header'] = h end opt.on("-h", "--help", "Show this help message.") do puts opt exit end opt.parse!(arguments) abort opt.to_s unless (0..1).include?(arguments.size) end case config["adapter"] when /^mysql/ args = { 'host' => '--host', 'port' => '--port', 'socket' => '--socket', 'username' => '--user', 'encoding' => '--default-character-set' }.map { |opt, arg| "#{arg}=#{config[opt]}" if config[opt] }.compact if config['password'] && include_password args << "--password=#{config['password']}" elsif config['password'] && !config['password'].to_s.empty? args << "-p" end args << config['database'] find_cmd_and_exec(['mysql', 'mysql5'], *args) when "postgresql", "postgres" ENV['PGUSER'] = config["username"] if config["username"] ENV['PGHOST'] = config["host"] if config["host"] ENV['PGPORT'] = config["port"].to_s if config["port"] ENV['PGPASSWORD'] = config["password"].to_s if config["password"] && include_password find_cmd_and_exec('psql', config["database"]) when "sqlite" find_cmd_and_exec('sqlite', config["database"]) when "sqlite3" args = [] args << "-#{options['mode']}" if options['mode'] args << "-header" if options['header'] args << File.expand_path(config['database'], Rails.root) find_cmd_and_exec('sqlite3', *args) when "oracle", "oracle_enhanced" logon = "" if config['username'] logon = config['username'] logon << "/#{config['password']}" if config['password'] && include_password logon << "@#{config['database']}" if config['database'] end find_cmd_and_exec('sqlplus', logon) else abort "Unknown command-line client for #{config['database']}. Submit a Rails patch to add support!" end end protected def find_cmd_and_exec(commands, *args) commands = Array(commands) dirs_on_path = ENV['PATH'].to_s.split(File::PATH_SEPARATOR) commands += commands.map{|cmd| "#{cmd}.exe"} if RbConfig::CONFIG['host_os'] =~ /mswin|mingw/ full_path_command = nil found = commands.detect do |cmd| dir = dirs_on_path.detect do |path| full_path_command = File.join(path, cmd) File.executable? full_path_command end end if found exec full_path_command, *args else abort("Couldn't find database client: #{commands.join(', ')}. Check your $PATH and try again.") end end end end # Has to set the RAILS_ENV before config/application is required if ARGV.first && !ARGV.first.index("-") && env = ARGV.first ENV['RAILS_ENV'] = %w(production development test).detect {|e| e =~ /^#{env}/} || env end