#!/usr/bin/env python
import types
import MySQLdb as mdb

HOST='localhost'
USER='root'
PASS='lol'

class MicroDb(object):
    _connections = {}

    def __init__(self, host, user, db=None):
        self.host = host
        self.user = user
        self.con = None
        if db:
            self.connect(db)

    def connect(self, db):
        con = self._connections.get((host, user, db))
        if con:
            self.connection = con
        else:
            con = mdb.connect(host=host, user=user, db=db)
            self._connections[(host,user,db)] = con
            self.connection = con
        return self.connection

    def cursor(self, connection):
        if not connection:
            connection = self.connection
        return connection.cursor()

    def query(self, sql, args=None, connection=None):
        cur = self.cursor(connection)
        self.cur = cur
        if (args):
            r = cur.execute(sql,args)
        else:
            r = cur.execute(sql)
        return cur.fetchall()

    def quote(self, var):
        if (var == None):
            return "''"
        elif (type(var) == types.StringType):
            return "'%s'" % (mdb.escape_string(var),)
        else:
            return str(var)
        return var

    def rownames(self):
        if not (hasattr(self.cur,'description') and self.cur.description):
            return []
        return [x[0] for x in self.cur.description]