Mercurial > gemma

annotate pkg/models/isrs.go @ 3678:8f58851927c0

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client: make layer factory only return new layer config for individual maps instead of each time it is invoked. The purpose of the factory was to support multiple maps with individual layers. But returning a new config each time it is invoked leads to bugs that rely on the layer's state. Now this factory reuses the same objects it created before, per map.
author Markus Kottlaender <markus@intevation.de>
date Mon, 17 Jun 2019 17:31:35 +0200
parents 6ffc372cde1e
children 4a7c2140e44b
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2018 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Raimund Renkert <raimund.renkert@intevation.de>
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13 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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14
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15 package models
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16
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17 import (
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18 "encoding/json"
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19 "errors"
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20 "fmt"
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21 "strconv"
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22 )
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23
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24 // Isrs represents the gauge identification data structure
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25 type Isrs struct {
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26 CountryCode string
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27 LoCode string
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28 FairwaySection string
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29 Orc string
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30 Hectometre int
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31 }
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32
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33 func (isrs *Isrs) UnmarshalJSON(data []byte) error {
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34 var s string
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35 if err := json.Unmarshal(data, &s); err != nil {
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36 return err
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37 }
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38 in, err := IsrsFromString(s)
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39 if err != nil {
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40 return err
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41 }
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42 *isrs = *in
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43 return nil
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44 }
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45
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46 func (isrs *Isrs) MarshalJSON() ([]byte, error) {
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47 if isrs == nil {
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48 return nil, nil
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49 }
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50 return json.Marshal(isrs.String())
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51 }
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52
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53 // IsrsFromString converts string representation of isrs code to type Isrs
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54 func IsrsFromString(isrsCode string) (*Isrs, error) {
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55 if len(isrsCode) < 20 {
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56 return nil, errors.New("ISRS code too short")
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57 }
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58 hm, err := strconv.Atoi(isrsCode[15:20])
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59 if err != nil {
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60 return nil, err
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61 }
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62 isrs := Isrs{
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63 CountryCode: isrsCode[0:2],
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64 LoCode: isrsCode[2:5],
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65 FairwaySection: isrsCode[5:10],
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66 Orc: isrsCode[10:15],
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67 Hectometre: hm,
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68 }
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69 return &isrs, nil
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70 }
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71
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72 // String creates a isrs code string from Isrs
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73 func (isrs *Isrs) String() string {
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74 return fmt.Sprintf("%s%s%s%s%05d",
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75 isrs.CountryCode,
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76 isrs.LoCode,
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77 isrs.FairwaySection,
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78 isrs.Orc,
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79 isrs.Hectometre)
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80 }