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annotate pkg/common/attributes.go @ 2047:78002c5e838c unify_imports

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Imports: Code simplification.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 25 Jan 2019 18:24:14 +0100
parents 74e24ae3205a
children 7d627258e045
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 common
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15
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16 import (
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17 "log"
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18 "strconv"
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19 "strings"
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20 "time"
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21 )
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22
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23 type (
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24
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25 // Attributes is a map of optional key/value attributes
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26 // of a configuration.
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27 Attributes map[string]string
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28
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29 AttributesMarshaler interface {
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30 MarshalAttributes(Attributes) error
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31 }
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32
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33 AttributesUnmarshaler interface {
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34 UnmarshalAttributes(Attributes) error
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35 }
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36 )
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37
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38 func (ca Attributes) Unmarshal(dst interface{}) error {
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39 if ca == nil {
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40 return nil
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41 }
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42 var err error
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43 if um, ok := dst.(AttributesUnmarshaler); ok {
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44 err = um.UnmarshalAttributes(ca)
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45 }
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46 return err
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47 }
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48
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49 func (ca Attributes) Delete(key string) bool {
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50 if ca == nil {
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51 return false
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52 }
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53 if _, found := ca[key]; !found {
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54 return false
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55 }
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56 delete(ca, key)
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57 return true
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58 }
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59
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60 // Get fetches a value for given key out of the configuration.
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61 // If the key was not found the bool component of the return value
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62 // return false.
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63 func (ca Attributes) Get(key string) (string, bool) {
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64 if ca == nil {
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65 return "", false
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66 }
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67 value, found := ca[key]
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68 return value, found
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69 }
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70
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71 func (ca Attributes) Set(key, value string) bool {
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72 if ca == nil {
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73 return false
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74 }
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75 ca[key] = value
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76 return true
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77 }
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78
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79 // Bool returns a bool value for a given key.
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80 func (ca Attributes) Bool(key string) bool {
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81 s, found := ca.Get(key)
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82 return found && strings.ToLower(s) == "true"
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83 }
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84
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85 func (ca Attributes) SetBool(key string, value bool) bool {
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86 var v string
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87 if value {
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88 v = "true"
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89 } else {
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90 v = "false"
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91 }
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92 return ca.Set(key, v)
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93 }
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94
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95 const TimeFormat = "2006-01-02T15:04:05"
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96
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97 // Time gives a time.Time for a given key.
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98 func (ca Attributes) Time(key string) (time.Time, bool) {
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99 s, found := ca.Get(key)
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100 if !found {
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101 return time.Time{}, false
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102 }
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103 t, err := time.Parse(TimeFormat, s)
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104 if err != nil {
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105 log.Printf("error: %v\n", err)
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106 return time.Time{}, false
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107 }
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108 return t, true
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109 }
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110
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111 func (ca Attributes) SetTime(key string, t time.Time) bool {
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112 value := t.Format(TimeFormat)
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113 return ca.Set(key, value)
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114
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115 }
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116
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117 func (ca Attributes) Int(key string) (int, bool) {
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118 s, found := ca.Get(key)
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119 if !found {
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120 return 0, false
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121 }
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122 i, err := strconv.Atoi(s)
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123 if err != nil {
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124 log.Printf("error: %v\n", err)
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125 return 0, false
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126 }
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127 return i, true
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128 }
1985
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129
2036
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130 func (ca Attributes) SetInt(key string, value int) bool {
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131 v := strconv.Itoa(value)
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132 return ca.Set(key, v)
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133 }
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134
1985
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135 func (ca Attributes) Duration(key string) (time.Duration, bool) {
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136 s, found := ca.Get(key)
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137 if !found {
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138 return 0, false
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139 }
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140 d, err := time.ParseDuration(s)
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141 if err != nil {
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142 log.Printf("error: %v\n", err)
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143 return 0, false
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144 }
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145 return d, true
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146 }
2036
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parents: 1985
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147
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148 func (ca Attributes) SetDuration(key string, value time.Duration) bool {
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149 v := value.String()
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150 return ca.Set(key, v)
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151 }