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require 'erb'
require 'yaml'
require 'optparse'
module Rails
class DBConsole
def self.start(app)
new(app).start
end
def initialize(app)
@app = app
end
def start
include_password = false
options = {}
OptionParser.new do |opt|
opt.banner = "Usage: dbconsole [options] [environment]"
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("-h", "--header") do |h|
options['header'] = h
end
opt.parse!(ARGV)
abort opt.to_s unless (0..1).include?(ARGV.size)
end
env = ARGV.first || ENV['RAILS_ENV'] || 'development'
unless config = YAML::load(ERB.new(IO.read("#{@app.root}/config/database.yml")).result)[env]
abort "No database is configured for the environment '#{env}'"
end
def find_cmd(*commands)
dirs_on_path = ENV['PATH'].to_s.split(File::PATH_SEPARATOR)
commands += commands.map{|cmd| "#{cmd}.exe"} if RUBY_PLATFORM =~ /win32/
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
found ? full_path_command : abort("Couldn't find database client: #{commands.join(', ')}. Check your $PATH and try again.")
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']
exec(find_cmd('mysql', 'mysql5'), *args)
when "postgresql"
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
exec(find_cmd('psql'), config["database"])
when "sqlite"
exec(find_cmd('sqlite'), config["database"])
when "sqlite3"
args = []
args << "-#{options['mode']}" if options['mode']
args << "-header" if options['header']
args << config['database']
exec(find_cmd('sqlite3'), *args)
else
abort "Unknown command-line client for #{config['database']}. Submit a Rails patch to add support!"
end
end
end
end
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