annotate pkg/models/common.go @ 4847:4847ac70103a

Made staticcheck happy. - error strings should not end with punctuation or a newline (ST1005) - error strings should not be capitalized (ST1005)
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 18 Nov 2019 11:54:20 +0100
parents 8080007d3c06
children d19fdf3d2099
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1017
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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 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13
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14 package models
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15
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16 import (
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17 "database/sql/driver"
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18 "encoding/json"
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19 "errors"
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20 "fmt"
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21 "strings"
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22 "time"
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23
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24 "gemma.intevation.de/gemma/pkg/common"
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25 )
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26
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27 var (
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28 errNoString = errors.New("not a string")
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29 errNoByteSlice = errors.New("not a byte slice")
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30 )
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31
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32 // WGS84 is the EPSG of the World Geodetic System 1984.
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33 const WGS84 = 4326
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34
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35 type (
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36 Date struct{ time.Time }
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37 Time struct{ time.Time }
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38
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39 // Country is a valid country 2 letter code.
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40 Country string
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41 // UniqueCountries is a list of unique countries.
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42 UniqueCountries []Country
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43 )
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44
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45 func (d Date) MarshalJSON() ([]byte, error) {
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46 return json.Marshal(d.Format(common.DateFormat))
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47 }
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48
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49 func (d *Date) UnmarshalJSON(data []byte) error {
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50 var s string
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51 if err := json.Unmarshal(data, &s); err != nil {
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52 return err
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53 }
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54 d2, err := time.Parse(common.DateFormat, s)
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55 if err == nil {
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56 *d = Date{d2}
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57 }
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58 return err
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59 }
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60
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61 func (t Time) MarshalJSON() ([]byte, error) {
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62 return json.Marshal(t.Format(common.TimeFormat))
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63 }
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64
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65 func (t *Time) UnmarshalJSON(data []byte) error {
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66 var s string
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67 if err := json.Unmarshal(data, &s); err != nil {
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68 return err
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69 }
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70 t2, err := time.Parse(common.TimeFormat, s)
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71 if err == nil {
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72 *t = Time{t2}
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73 }
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74 return err
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75 }
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76
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77 var (
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78 validCountries = []string{
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79 "AT", "BG", "DE", "HU", "HR",
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80 "MD", "RO", "RS", "SK", "UA",
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81 }
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82 )
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83
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84 // Valid checks if the given country is a known one.
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85 func (c Country) Valid() bool {
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86 for _, v := range validCountries {
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87 if string(c) == v {
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88 return true
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89 }
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90 }
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91 return false
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92 }
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93
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94 // UnmarshalJSON ensures that the given string forms a valid
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95 // two letter country code.
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96 func (c *Country) UnmarshalJSON(data []byte) error {
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97 var s string
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98 if err := json.Unmarshal(data, &s); err != nil {
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99 return err
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100 }
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101 u := strings.ToUpper(s)
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102 for _, v := range validCountries {
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103 if v == u {
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104 *c = Country(v)
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105 return nil
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106 }
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107 }
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108 return fmt.Errorf("'%s' is not a valid country", s)
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109 }
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110
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111 // Value implements the driver.Valuer interface.
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112 func (c Country) Value() (driver.Value, error) {
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113 return string(c), nil
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114 }
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115
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116 // Scan implements the sql.Scanner interfaces.
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117 func (c *Country) Scan(src interface{}) (err error) {
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118 if s, ok := src.(string); ok {
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119 *c = Country(s)
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120 } else {
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121 err = errNoString
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122 }
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123 return
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124 }
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125
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126 func (uc *UniqueCountries) UnmarshalJSON(data []byte) error {
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127 var countries []Country
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128 if err := json.Unmarshal(data, &countries); err != nil {
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129 return err
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130 }
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131 unique := map[Country]struct{}{}
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132 for _, c := range countries {
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133 if _, found := unique[c]; found {
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134 return fmt.Errorf("country '%s' is not unique", string(c))
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135 }
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136 unique[c] = struct{}{}
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parents: 1900
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137 }
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parents: 1900
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138 *uc = countries
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139 return nil
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parents: 1900
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140 }
2231
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parents: 2150
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141
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parents: 2150
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142 func (uc UniqueCountries) String() string {
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parents: 2150
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143 var b strings.Builder
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144 for i, c := range uc {
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parents: 2150
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145 if i > 0 {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2150
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146 b.WriteString(", ")
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2150
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147 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2150
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148 b.WriteString(string(c))
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2150
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149 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2150
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150 return b.String()
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 2150
diff changeset
151 }