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# -*- coding: utf-8 -*-
"""
***************************************************************************
OgrAlgorithm.py
---------------------
Date : November 2012
Copyright : (C) 2012 by Victor Olaya
Email : volayaf at gmail dot 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. *
* *
***************************************************************************
"""
__author__ = 'Victor Olaya'
__date__ = 'November 2012'
__copyright__ = '(C) 2012, Victor Olaya'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
import string
import re
try:
from osgeo import ogr
ogrAvailable = True
except:
ogrAvailable = False
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import *
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.tools import dataobjects
class OgrAlgorithm(GdalAlgorithm):
DB = 'DB'
def ogrConnectionString(self, uri):
ogrstr = None
layer = dataobjects.getObjectFromUri(uri, False)
if layer is None:
return uri
provider = layer.dataProvider().name()
if provider == 'spatialite':
# dbname='/geodata/osm_ch.sqlite' table="places" (Geometry) sql=
regex = re.compile("dbname='(.+)'")
r = regex.search(str(layer.source()))
ogrstr = r.groups()[0]
elif provider == 'postgres':
# dbname='ktryjh_iuuqef' host=spacialdb.com port=9999
# user='ktryjh_iuuqef' password='xyqwer' sslmode=disable
# key='gid' estimatedmetadata=true srid=4326 type=MULTIPOLYGON
# table="t4" (geom) sql=
s = re.sub(''' sslmode=.+''', '', str(layer.source()))
ogrstr = 'PG:%s' % s
else:
ogrstr = str(layer.source())
return ogrstr
def drivers(self):
list = []
if ogrAvailable:
for iDriver in range(ogr.GetDriverCount()):
list.append('%s' % ogr.GetDriver(iDriver).GetName())
return list
def failure(self, pszDataSource):
out = 'FAILURE: Unable to open datasource %s with the following \
drivers.' % pszDataSource
out = out + string.join(map(lambda d: '->' + d, self.drivers()), '\n')
return out
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