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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
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