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89 lines
3.3 KiB
Python
89 lines
3.3 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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SextanteVectorWriter.py
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---------------------
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Date : September 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__ = 'September 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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from PyQt4.QtCore import *
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from qgis.core import *
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class SextanteVectorWriter:
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MEMORY_LAYER_PREFIX = "memory:"
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TYPE_MAP = {QGis.WKBPoint : "Point",
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QGis.WKBLineString : "LineString",
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QGis.WKBPolygon : "Polygon",
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QGis.WKBMultiPoint : "MultiPoint",
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QGis.WKBMultiLineString : "MultiLineString",
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QGis.WKBMultiPolygon : "MultiPolygon"
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}
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def __init__(self, fileName, encoding, fields, geometryType, crs, options=None):
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self.fileName = fileName
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self.isMemory = False
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self.memLayer = None
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self.writer = None
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if encoding is None:
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settings = QSettings()
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encoding = settings.value("/SextanteQGIS/encoding", "System")
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if self.fileName.startswith(self.MEMORY_LAYER_PREFIX):
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self.isMemory = True
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uri = self.TYPE_MAP[geometryType]
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if crs.isValid():
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uri += "?crs=" + crs.authid() + "&"
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fieldsdesc = ["field=" + str(f.name()) for f in fields]
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#+ ":" + str(f.typeName())
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fieldsstring = "&".join(fieldsdesc)
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uri += fieldsstring
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self.memLayer = QgsVectorLayer(uri, self.fileName, "memory")
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self.writer = self.memLayer.dataProvider()
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else:
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formats = QgsVectorFileWriter.supportedFiltersAndFormats()
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OGRCodes = {}
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for key, value in formats.items():
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extension = unicode(key)
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extension = extension[extension.find('*.') + 2:]
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extension = extension[:extension.find(" ")]
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OGRCodes[extension] = value
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extension = self.fileName[self.fileName.rfind(".") + 1:]
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if extension not in OGRCodes:
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extension = "shp"
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self.filename = self.filename + "shp"
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qgsfields = QgsFields()
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for field in fields:
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qgsfields.append(field)
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self.writer = QgsVectorFileWriter(self.fileName, encoding, qgsfields, geometryType, crs, OGRCodes[extension])
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def addFeature(self, feature):
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if self.isMemory:
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self.writer.addFeatures([feature])
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else:
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self.writer.addFeature(feature)
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