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annotate pkg/common/attributes.go @ 2150:2c67c51d57ad

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Print templates: Implemented GET of all templates.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 08 Feb 2019 11:31:57 +0100
parents ae0021feaac8
children dc4fae4bdb8f
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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 // Attributes is a map of optional key/value attributes
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25 // of a configuration.
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26 Attributes map[string]string
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27
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28 AttributesMarshaler interface {
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29 MarshalAttributes(Attributes) error
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30 }
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31
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32 AttributesUnmarshaler interface {
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33 UnmarshalAttributes(Attributes) error
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34 }
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35 )
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36
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37 func (ca Attributes) Marshal(src interface{}) error {
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38 if ca == nil {
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39 return nil
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40 }
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41 var err error
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42 if m, ok := src.(AttributesMarshaler); ok {
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43 err = m.MarshalAttributes(ca)
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44 }
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45 return err
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46 }
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47
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48 func (ca Attributes) Unmarshal(dst interface{}) error {
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49 if ca == nil {
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50 return nil
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51 }
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52 var err error
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53 if um, ok := dst.(AttributesUnmarshaler); ok {
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54 err = um.UnmarshalAttributes(ca)
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55 }
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56 return err
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57 }
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58
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59 func (ca Attributes) Delete(key string) bool {
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60 if ca == nil {
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61 return false
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62 }
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63 if _, found := ca[key]; !found {
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64 return false
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65 }
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66 delete(ca, key)
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67 return true
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68 }
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69
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70 // Get fetches a value for given key out of the configuration.
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71 // If the key was not found the bool component of the return value
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72 // return false.
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73 func (ca Attributes) Get(key string) (string, bool) {
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74 if ca == nil {
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75 return "", false
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76 }
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77 value, found := ca[key]
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78 return value, found
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79 }
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80
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81 func (ca Attributes) Set(key, value string) bool {
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82 if ca == nil {
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83 return false
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84 }
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85 ca[key] = value
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86 return true
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87 }
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88
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89 // Bool returns a bool value for a given key.
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90 func (ca Attributes) Bool(key string) bool {
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91 s, found := ca.Get(key)
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92 return found && strings.ToLower(s) == "true"
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93 }
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94
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95 func (ca Attributes) SetBool(key string, value bool) bool {
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96 var v string
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97 if value {
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98 v = "true"
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99 } else {
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100 v = "false"
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101 }
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102 return ca.Set(key, v)
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103 }
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104
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105 func (ca Attributes) Date(key string) (time.Time, bool) {
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106 s, found := ca.Get(key)
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107 if !found {
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108 return time.Time{}, false
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109 }
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110 d, err := time.Parse(DateFormat, s)
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111 if err != nil {
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112 log.Printf("error: %v\n", err)
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113 return time.Time{}, false
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114 }
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115 return d, true
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116 }
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117
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118 func (ca Attributes) SetDate(key string, date time.Time) bool {
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119 s := date.Format(DateFormat)
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120 return ca.Set(key, s)
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121 }
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122
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123 // Time gives a time.Time for a given key.
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124 func (ca Attributes) Time(key string) (time.Time, bool) {
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125 s, found := ca.Get(key)
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126 if !found {
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127 return time.Time{}, false
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128 }
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129 t, err := time.Parse(TimeFormat, s)
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130 if err != nil {
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131 log.Printf("error: %v\n", err)
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132 return time.Time{}, false
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133 }
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134 return t, true
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135 }
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136
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137 func (ca Attributes) SetTime(key string, t time.Time) bool {
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138 value := t.Format(TimeFormat)
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139 return ca.Set(key, value)
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140
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141 }
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142
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143 func (ca Attributes) Int(key string) (int, bool) {
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144 s, found := ca.Get(key)
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145 if !found {
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146 return 0, false
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147 }
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148 i, err := strconv.Atoi(s)
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149 if err != nil {
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150 log.Printf("error: %v\n", err)
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151 return 0, false
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152 }
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153 return i, true
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154 }
1985
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155
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156 func (ca Attributes) SetInt(key string, value int) bool {
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157 v := strconv.Itoa(value)
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158 return ca.Set(key, v)
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159 }
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160
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161 func (ca Attributes) Duration(key string) (time.Duration, bool) {
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162 s, found := ca.Get(key)
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163 if !found {
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164 return 0, false
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165 }
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166 d, err := time.ParseDuration(s)
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167 if err != nil {
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168 log.Printf("error: %v\n", err)
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169 return 0, false
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170 }
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171 return d, true
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172 }
2036
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173
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174 func (ca Attributes) SetDuration(key string, value time.Duration) bool {
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175 v := value.String()
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176 return ca.Set(key, v)
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177 }