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annotate flys-backend/contrib/shpimporter/dgm.py @ 4975:9eea3cd22ee7 dami

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Add dgm file reader although an awk script should have been more appropiate
author Andre Heinecke <aheinecke@intevation.de>
date Wed, 13 Feb 2013 17:46:34 +0100
parents
children 71e1b96f4794
rev   line source
4975
9eea3cd22ee7 Add dgm file reader although an awk script should have been more appropiate
Andre Heinecke <aheinecke@intevation.de>
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1 # -*- coding: utf-8 -*-
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2
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3 import codecs
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4 import utils
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5
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6 def latin(string):
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7 return unicode(string, "latin1")
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8
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9 # <dbfield> : (<csvfield>, conversion function)
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10 DGM_MAP = {
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11 "name" : latin("Gewässer"),
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12 "lower" : ("km_von", lambda x: int(x)),
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13 "upper" : ("km_bis", lambda x: int(x)),
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14 "year_from" : "Jahr_von",
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15 "year_to" : "Jahr_bis",
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16 "projection" : "Projektion",
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17 "elevation_state" : latin("Höhenstatus"),
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18 "format" : "Format",
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19 "border_break" : ("Bruchkanten",
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20 lambda x: True if x.lower() == "Ja" else False),
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21 "resolution" : (latin("Auflösung"), lambda x: x),
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22 # "description" :
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23 # : "SRID",
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24 "path" : ("Pfad_Bestand", lambda x: x),
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25 }
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26
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27 SQL_INSERT_DGT = "INSERT INTO dem (river_id, " + ", ".join(DGM_MAP.keys()) + \
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28 ") VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)"
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29
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30 def insertRiverDgm(dbconn, dgmfile, river_name, dry_run):
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31 with codecs.open(dgmfile, "r", "latin1") as csvfile:
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32 firstline = csvfile.readline()
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33 names = firstline.split(";")
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34 namedict = {}
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35 field_nr = 0
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36 for name in names:
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37 namedict[name] = field_nr
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38 field_nr += 1
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39
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40 river_id = utils.getRiverId(dbconn, river_name)
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41 for line in csvfile:
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42 fields = line.split(";")
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43 if not fields: continue
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44 if fields[namedict[latin("Gewässer")]] != river_name:
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45 continue
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46 else:
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47 values=[]
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48 for key, val in DGM_MAP.items():
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49 if isinstance(val, tuple):
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50 values.append(val[1](fields[namedict[val[0]]]))
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51 else:
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52 values.append(unicode.encode(
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53 fields[namedict[val]], "UTF-8"))
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54 cur = dbconn.cursor()
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55 cur.execute(SQL_INSERT_DGT, [river_id] + values)
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56
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57 if not dry_run:
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58 dbconn.commit()
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59
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