Method: PGconn.parse_connect_args

Defined in:
lib/pg.rb

.parse_connect_args(*args) ⇒ String

Parse the connection args into a connection-parameter string

Parameters:

  • the connection parameters

Returns:

  • a connection parameters string



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# File 'lib/pg.rb', line 35

def self::parse_connect_args( *args )
  return '' if args.empty?

  # This will be swapped soon for code that makes options like those required for
  # PQconnectdbParams()/PQconnectStartParams(). For now, stick to an options string for
  # PQconnectdb()/PQconnectStart().
  connopts = []

  # Handle an options hash first
  if args.last.is_a?( Hash )
    opthash = args.pop 
    opthash.each do |key, val|
      connopts.push( "%s=%s" % [key, PGconn.quote_connstr(val)] )
    end
  end

  # Option string style
  if args.length == 1 && args.first.to_s.index( '=' )
    connopts.unshift( args.first )

  # Append positional parameters
  else
    args.each_with_index do |val, i|
      next unless val # Skip nil placeholders

      key = CONNECT_ARGUMENT_ORDER[ i ] or
        raise ArgumentError, "Extra positional parameter %d: %p" % [ i+1, val ]
      connopts.push( "%s=%s" % [key, PGconn.quote_connstr(val.to_s)] )
    end
  end

  return connopts.join(' ')
end