File: __init__.py

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# -*- coding: utf-8 -*-

"""
/***************************************************************************
Name                 : DB Manager
Description          : Database manager plugin for QGIS
Date                 : May 23, 2011
copyright            : (C) 2011 by Giuseppe Sucameli
email                : brush.tyler@gmail.com

 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
"""

from PyQt4.QtCore import *
from PyQt4.QtGui import *

class NotSupportedDbType(Exception):
	def __init__(self, dbtype):
		self.msg = self.tr("%s is not supported yet") % dbtype
		Exception(self, self.msg)

	def __str__(self):
		return self.msg.encode('utf-8')


def initDbPluginList():
	import os
	current_dir = os.path.dirname(__file__)
	for name in os.listdir(current_dir):
		if not os.path.isdir( os.path.join( current_dir, name ) ):
			continue

		try:
			exec( u"from .%s import plugin as mod" % name )
		except ImportError, e:
			DBPLUGIN_ERRORS.append( u"%s: %s" % (name, e.message) )
			continue

		pluginclass = mod.classFactory()
		SUPPORTED_DBTYPES[ pluginclass.typeName() ] = pluginclass

	return len(SUPPORTED_DBTYPES) > 0

def supportedDbTypes():
	return sorted(SUPPORTED_DBTYPES.keys())

def getDbPluginErrors():
	return DBPLUGIN_ERRORS

def createDbPlugin(dbtype, conn_name=None):
	if not SUPPORTED_DBTYPES.has_key( dbtype ):
		raise NotSupportedDbType( dbtype )
	dbplugin = SUPPORTED_DBTYPES[ dbtype ]
	return dbplugin if conn_name is None else dbplugin(conn_name)


# initialize the plugin list
SUPPORTED_DBTYPES = {}
DBPLUGIN_ERRORS = []
initDbPluginList()