Mercurial > dive4elements > river
view backend/contrib/shpimporter/utils.py @ 8234:b6371be363b1
(issue1448) Carry sq_ti_date in artifact description anf fix sqtipanel
The sq ti panel no longer inherits from SQOffEpoch panel as it
is now to different for that to make sense. This commit also implements
createOld for the SQ Ti panel.
author | Andre Heinecke <andre.heinecke@intevation.de> |
---|---|
date | Mon, 08 Sep 2014 17:52:52 +0200 |
parents | 5aa05a7a34b7 |
children |
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import os import sys import logging try: from osgeo import ogr except ImportError: import ogr logger = logging.getLogger("utils") SHP='.shp' SQL_SELECT_RIVER_ID="SELECT id FROM rivers WHERE name = %s" SQL_SELECT_RIVER_ID_ORA="SELECT id FROM rivers WHERE name = :s" def findShapefiles(path): shapes = [] for root, dirs, files in os.walk(path): if len(files) == 0: continue logger.debug("Processing directory '%s' with %i files " % (root, len(files))) for f in files: idx = f.find(SHP) if (idx+len(SHP)) == len(f): shapes.append((f.replace(SHP, ''), root + "/" + f)) return shapes def getRiverId(dbconn, name, oracle): """ Returns the id of the river "name" Dbconn must be a python database connection api compliant object """ cur = dbconn.cursor() if oracle: # This is stupid and shoudl not be neccessary. But I don't # know how to make it work both ways. aheinecke - 02/2013 stmt = SQL_SELECT_RIVER_ID_ORA else: stmt = SQL_SELECT_RIVER_ID cur.execute(stmt, (getUTF8(name),)) row = cur.fetchone() if row: return row[0] else: return 0 def getUTF8(string): """ Tries to convert the string to a UTF-8 encoding by first checking if it is UTF-8 and then trying cp1252 """ try: return unicode.encode(unicode(string, "UTF-8"), "UTF-8") except UnicodeDecodeError: # Probably European Windows names so lets try again return unicode.encode(unicode(string, "cp1252"), "UTF-8") def getUTF8Path(path): """ Tries to convert path to utf-8 by first checking the filesystemencoding and trying the default windows encoding afterwards. Returns a valid UTF-8 encoded unicode object or throws a UnicodeDecodeError """ try: return unicode.encode(unicode(path, sys.getfilesystemencoding()), "UTF-8") except UnicodeDecodeError: # Probably European Windows names so lets try again return unicode.encode(unicode(path, "cp1252"), "UTF-8") WKB_MAP = { ogr.wkb25Bit : 'wkb25Bit', ogr.wkbGeometryCollection : 'wkbGeometryCollection', ogr.wkbGeometryCollection25D :'wkbGeometryCollection25D', ogr.wkbLineString : 'wkbLineString', ogr.wkbLineString25D : 'wkbLineString25D', ogr.wkbLinearRing : 'wkbLinearRing', ogr.wkbMultiLineString : 'wkbMultiLineString', ogr.wkbMultiLineString25D : 'wkbMultiLineString25D', ogr.wkbMultiPoint : 'wkbMultiPoint', ogr.wkbMultiPoint25D : 'wkbMultiPoint25D', ogr.wkbMultiPolygon : 'wkbMultiPolygon', ogr.wkbMultiPolygon25D : 'wkbMultiPolygon25D', ogr.wkbNDR : 'wkbNDR', ogr.wkbNone : 'wkbNone', ogr.wkbPoint : 'wkbPoint', ogr.wkbPoint25D : 'wkbPoint25D', ogr.wkbPolygon : 'wkbPolygon', ogr.wkbPolygon25D : 'wkbPolygon25D', ogr.wkbUnknown : 'wkbUnknown', ogr.wkbXDR : 'wkbXDR' } def getWkbString(type): return WKB_MAP.get(type) or "Unknown" def convertToMultiLine(feature): """ Converts a feature to a multiline feature. """ geometry = feature.GetGeometryRef() # SRS information is lost while forcing to multiline srs = geometry.GetSpatialReference() geometry = ogr.ForceToMultiLineString(geometry) geometry.AssignSpatialReference(srs) feature.SetGeometry(geometry) return feature def convertToMultiPolygon(feature): """ Converts a feature to a multiline feature. """ geometry = feature.GetGeometryRef() # SRS information is lost while forcing to multiline srs = geometry.GetSpatialReference() geometry = ogr.ForceToMultiPolygon(geometry) geometry.AssignSpatialReference(srs) feature.SetGeometry(geometry) return feature