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84 lines
2.8 KiB
Python
84 lines
2.8 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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OgrAlgorithm.py
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---------------------
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Date : November 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Victor Olaya'
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__date__ = 'November 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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import string
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import re
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try:
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from osgeo import ogr
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ogrAvailable = True
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except:
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ogrAvailable = False
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from PyQt4.QtCore import *
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from PyQt4.QtGui import *
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from qgis.core import *
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from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
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from processing.tools import dataobjects
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class OgrAlgorithm(GdalAlgorithm):
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DB = 'DB'
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def ogrConnectionString(self, uri):
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ogrstr = None
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layer = dataobjects.getObjectFromUri(uri, False)
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if layer is None:
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return uri
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provider = layer.dataProvider().name()
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if provider == 'spatialite':
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# dbname='/geodata/osm_ch.sqlite' table="places" (Geometry) sql=
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regex = re.compile("dbname='(.+)'")
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r = regex.search(str(layer.source()))
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ogrstr = r.groups()[0]
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elif provider == 'postgres':
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# dbname='ktryjh_iuuqef' host=spacialdb.com port=9999
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# user='ktryjh_iuuqef' password='xyqwer' sslmode=disable
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# key='gid' estimatedmetadata=true srid=4326 type=MULTIPOLYGON
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# table="t4" (geom) sql=
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s = re.sub(''' sslmode=.+''', '', str(layer.source()))
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ogrstr = 'PG:%s' % s
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else:
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ogrstr = str(layer.source())
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return ogrstr
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def drivers(self):
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list = []
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if ogrAvailable:
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for iDriver in range(ogr.GetDriverCount()):
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list.append('%s' % ogr.GetDriver(iDriver).GetName())
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return list
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def failure(self, pszDataSource):
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out = 'FAILURE: Unable to open datasource %s with the following \
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drivers.' % pszDataSource
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out = out + string.join(map(lambda d: '->' + d, self.drivers()), '\n')
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return out
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