1 files changed, 87 insertions, 0 deletions
diff --git a/railties/lib/rails/commands/dbconsole.rb b/railties/lib/rails/commands/dbconsole.rb
new file mode 100644
index 0000000000..e6f11a45db
--- /dev/null
+++ b/railties/lib/rails/commands/dbconsole.rb
@@ -0,0 +1,87 @@
+require 'erb'
+require 'yaml'
+require 'optparse'
+
+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(RAILS_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