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annotate pkg/models/isrs.go @ 5601:1222b777f51f

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Made golint finally happy.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sat, 06 Aug 2022 02:09:57 +0200
parents 15c9d4064f0f
children
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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 // UnmarshalJSON implements the json.Unmarshaler interface.
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34 func (isrs *Isrs) UnmarshalJSON(data []byte) error {
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35 var s string
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36 if err := json.Unmarshal(data, &s); err != nil {
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37 return err
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38 }
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39 in, err := IsrsFromString(s)
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40 if err != nil {
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41 return err
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42 }
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43 *isrs = *in
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44 return nil
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45 }
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46
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47 // Less orders two Isrs codes.
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48 func (isrs *Isrs) Less(other *Isrs) bool {
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49 if isrs.CountryCode < other.CountryCode {
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50 return true
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51 }
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52 if isrs.CountryCode > other.CountryCode {
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53 return false
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54 }
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55 if isrs.LoCode < other.LoCode {
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56 return true
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57 }
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58 if isrs.LoCode > other.LoCode {
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59 return false
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60 }
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61 if isrs.FairwaySection < other.FairwaySection {
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62 return true
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63 }
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64 if isrs.FairwaySection > other.FairwaySection {
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65 return false
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66 }
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67 if isrs.Orc < other.Orc {
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68 return true
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69 }
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70 if isrs.Orc > other.Orc {
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71 return false
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72 }
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73 if isrs.Hectometre < other.Hectometre {
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74 return true
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75 }
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76 return false
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77 }
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78
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79 // MarshalJSON implements the json.Marshaler interface.
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80 func (isrs *Isrs) MarshalJSON() ([]byte, error) {
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81 if isrs == nil {
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82 return nil, nil
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83 }
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84 return json.Marshal(isrs.String())
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85 }
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86
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87 // IsrsFromString converts string representation of isrs code to type Isrs
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88 func IsrsFromString(isrsCode string) (*Isrs, error) {
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89 if len(isrsCode) < 20 {
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90 return nil, errors.New("ISRS code too short")
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91 }
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92 hm, err := strconv.Atoi(isrsCode[15:20])
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93 if err != nil {
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94 return nil, err
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95 }
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96 isrs := Isrs{
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97 CountryCode: isrsCode[0:2],
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98 LoCode: isrsCode[2:5],
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99 FairwaySection: isrsCode[5:10],
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100 Orc: isrsCode[10:15],
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101 Hectometre: hm,
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102 }
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103 return &isrs, nil
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104 }
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105
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106 // String creates a isrs code string from Isrs
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107 func (isrs *Isrs) String() string {
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108 return fmt.Sprintf("%s%s%s%s%05d",
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109 isrs.CountryCode,
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110 isrs.LoCode,
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111 isrs.FairwaySection,
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112 isrs.Orc,
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113 isrs.Hectometre)
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114 }