Mercurial > gemma

annotate pkg/wfs/capabilities.go @ 1679:2dc7768be0e4

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Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 26 Dec 2018 21:01:29 +0100
parents efc409e330a6
children 6caf5cd6249e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 wfs
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15
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16 import (
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17 "encoding/xml"
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18 "errors"
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19 "io"
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20 "regexp"
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21 "strconv"
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22
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23 "golang.org/x/net/html/charset"
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24 )
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25
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26 type Keyword struct {
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27 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 Keyword"`
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28 Value string `xml:",cdata"`
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29 }
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30 type Keywords struct {
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31 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 Keywords"`
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32 Keywords []Keyword `xml:"Keyword"`
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33 }
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34
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35 type ServiceIdentification struct {
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36 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 ServiceIdentification"`
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37 Title string
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38 Abstract string
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39 Keywords Keywords `xml:"Keywords"`
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40 ServiceType string
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41 ServiceTypeVersion string
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42 }
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43
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44 type Get struct {
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45 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 Get"`
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46 HRef string `xml:"http://www.w3.org/1999/xlink href,attr"`
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47 }
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48
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49 type Post struct {
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50 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 Post"`
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51 HRef string `xml:"http://www.w3.org/1999/xlink href,attr"`
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52 }
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53
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54 type HTTP struct {
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55 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 HTTP"`
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56 Get *Get `xml:"Get"`
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57 Post *Post `xml:"Post"`
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58 }
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59
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60 type DCP struct {
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61 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 DCP"`
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62 HTTP HTTP `xml:"HTTP"`
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63 }
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64
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65 type Value struct {
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66 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 Value"`
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67 Value string `xml:",cdata"`
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68 }
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69
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70 type AllowedValues struct {
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71 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 AllowedValues"`
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72 Values []Value `xml:"Value"`
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73 }
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74
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75 type Parameter struct {
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76 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 Parameter"`
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77 Name string `xml:"name,attr"`
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78 AllowedValues AllowedValues `xml:"AllowedValues"`
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79 }
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80
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81 type DefaultValue struct {
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82 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 DefaultValue"`
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83 Value string `xml:",cdata"`
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84 }
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85
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86 type Constraint struct {
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87 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 Constraint"`
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88 Name string `xml:"name,attr"`
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89 AllowedValues AllowedValues `xml:"AllowedValues"`
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90 DefaultValue *DefaultValue `xml:"DefaultValue"`
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91 }
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92
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93 type Operation struct {
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94 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 Operation"`
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95 Name string `xml:"name,attr"`
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96 DCP DCP `xml:"DCP"`
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97 Parameters []*Parameter `xml:"Parameter"`
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98 Constraints []*Constraint `xml:"Constraint"`
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99 }
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100
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101 type OperationsMetadata struct {
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102 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 OperationsMetadata"`
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103 Operations []*Operation `xml:"Operation"`
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104 Constraints []*Constraint `xml:"Constraint"`
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105 }
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106
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107 type WGS84BoundingBox struct {
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108 XMLName xml.Name `xml:"http://www.opengis.net/ows/1.1 WGS84BoundingBox"`
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109 LowerCorner string `xml:"LowerCorner"`
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110 UpperCorner string `xml:"UpperCorner"`
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111 }
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112
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113 type FeatureType struct {
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114 XMLName xml.Name `xml:"http://www.opengis.net/wfs/2.0 FeatureType"`
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115 Name string `xml:"Name"`
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116 Title string `xml:"Title"`
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117 Abstract string `xml:"Abstract"`
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118 Keywords Keywords `xml:"Keywords"`
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119 DefaultCRS string `xml:"DefaultCRS"`
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120 OtherCRSs []string `xml:"OtherCRS"`
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121 WGS84BoundingBox *WGS84BoundingBox `xml:"WGS84BoundingBox"`
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122 Namespaces []xml.Name `xml:"-"`
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123 }
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124
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125 // shadowFeatureType is used to prevent recursive UnmarshalXML for FeatureType.
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126 type shadowFeatureType struct {
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127 XMLName xml.Name `xml:"http://www.opengis.net/wfs/2.0 FeatureType"`
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128 Name string `xml:"Name"`
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129 Title string `xml:"Title"`
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130 Abstract string `xml:"Abstract"`
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131 Keywords Keywords `xml:"Keywords"`
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132 DefaultCRS string `xml:"DefaultCRS"`
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133 OtherCRSs []string `xml:"OtherCRS"`
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134 WGS84BoundingBox *WGS84BoundingBox `xml:"WGS84BoundingBox"`
1602
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135 Namespaces []xml.Name `xml:"-"`
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136 }
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137
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138 func (ft *FeatureType) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
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139 // Filter out the namespaces for this feature type.
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140 var ns []xml.Name
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141 for _, attr := range start.Attr {
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142 if attr.Name.Space == "xmlns" {
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143 ns = append(ns, xml.Name{Space: attr.Name.Local, Local: attr.Value})
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144 }
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145 }
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146 var sft shadowFeatureType
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147 if err := d.DecodeElement(&sft, &start); err != nil {
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148 return err
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149 }
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150 *ft = FeatureType(sft)
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151 ft.Namespaces = ns
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152 return nil
1600
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153 }
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154
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155 type FeatureTypeList struct {
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156 XMLName xml.Name `xml:"http://www.opengis.net/wfs/2.0 FeatureTypeList"`
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157 FeatureTypes []*FeatureType `xml:"FeatureType"`
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158 }
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159
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160 type Capabilities struct {
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161 XMLName xml.Name `xml:"http://www.opengis.net/wfs/2.0 WFS_Capabilities"`
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162
1608
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163 BaseURL string `xml:"-"`
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164
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165 ServiceIdentification ServiceIdentification
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166 OperationsMetadata OperationsMetadata
1600
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167 FeatureTypeList FeatureTypeList
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168 }
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169
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170 func (c *Capabilities) FindOperation(name string) *Operation {
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171 for _, op := range c.OperationsMetadata.Operations {
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172 if op.Name == name {
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173 return op
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174 }
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175 }
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176 return nil
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177 }
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178
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179 func (o *Operation) SupportsHits() bool {
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180 for _, p := range o.Parameters {
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181 if p.Name == "resultType" {
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182 for _, av := range p.AllowedValues.Values {
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183 if av.Value == "hits" {
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184 return true
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185 }
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186 }
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187 }
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188 }
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189 return false
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190 }
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191
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192 func (o *Operation) SupportsOutputFormat(formats ...string) bool {
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193 for _, p := range o.Parameters {
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194 if p.Name == "outputFormat" {
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195 for _, av := range p.AllowedValues.Values {
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196 for _, f := range formats {
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197 if av.Value == f {
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198 return true
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199 }
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200 }
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201 }
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202 }
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203 }
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204 return false
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205 }
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206
1608
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207 func (o *Operation) FeaturesPerPage() (int, bool) {
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208 for _, c := range o.Constraints {
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209 if c.Name == "CountDefault" {
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210 if c.DefaultValue != nil {
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211 if v, err := strconv.Atoi(c.DefaultValue.Value); err == nil {
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212 return v, true
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213 }
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214 }
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215 for _, av := range c.AllowedValues.Values {
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216 if v, err := strconv.Atoi(av.Value); err == nil {
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217 return v, true
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218 }
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219
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220 }
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221 }
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222 }
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223 return 0, false
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224 }
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225
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226 func (c *Capabilities) FindFeatureType(name string) *FeatureType {
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227 for _, ft := range c.FeatureTypeList.FeatureTypes {
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228 if ft.Name == name {
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229 return ft
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diff changeset
230 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
231 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
232 return nil
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
233 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
234
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
235 func (op *Operation) FindParameter(name string) *Parameter {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
236 for _, p := range op.Parameters {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
237 if p.Name == name {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
238 return p
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
239 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
240 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
241 return nil
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
242 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
243
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
244 const WFS2_0_0 = "2.0.0"
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
245
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
246 var versionRe = regexp.MustCompile(`(\d+)\.(\d+)\.(\d+)`)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
247
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
248 func versionIsLess(a, b string) bool {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
249 am := versionRe.FindStringSubmatch(a)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
250 bm := versionRe.FindStringSubmatch(b)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
251
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
252 var n int
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
253 if len(am) < len(bm) {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
254 n = len(am)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
255 } else {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
256 n = len(bm)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
257 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
258 n--
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
259
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
260 for i := 0; i < n; i++ {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
261 ai, _ := strconv.Atoi(am[i+1])
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
262 bi, _ := strconv.Atoi(bm[i+1])
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
263 switch {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
264 case ai < bi:
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
265 return true
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
266 case ai > bi:
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
267 return false
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
268 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
269 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
270 return false
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
271 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
272
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
273 func maxVersion(a, b string) string {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
274 am := versionRe.FindStringSubmatch(a)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
275 bm := versionRe.FindStringSubmatch(b)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
276
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
277 var n int
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
278 if len(am) < len(bm) {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
279 n = len(am)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
280 } else {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
281 n = len(bm)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
282 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
283 n--
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
284
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
285 for i := 0; i < n; i++ {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
286 ai, _ := strconv.Atoi(am[i+1])
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
287 bi, _ := strconv.Atoi(bm[i+1])
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
288 switch {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
289 case ai > bi:
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
290 return a
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
291 case bi > ai:
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
292 return b
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
293 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
294 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
295 return a
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
296 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
297
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
298 func (c *Capabilities) HighestWFSVersion(def string) string {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
299 op := c.FindOperation("GetCapabilities")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
300 if op == nil {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
301 return def
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
302 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
303 p := op.FindParameter("AcceptVersions")
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
304 if p == nil {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
305 return def
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
306 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
307 if len(p.AllowedValues.Values) == 0 {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
308 return def
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
309 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
310
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
311 max := p.AllowedValues.Values[0].Value
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
312 for _, v := range p.AllowedValues.Values[1:] {
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
313 max = maxVersion(max, v.Value)
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
314 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
315
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
316 return max
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
317 }
427f9010b4a9 WFS download: Started with GET downloader (paged and unpaged).
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1602
diff changeset
318
1679
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
319 var (
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
320 ErrInvalidCRS = errors.New("Invalid CRS string")
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
321 crsRe = regexp.MustCompile(`urn:ogc:def:crs:EPSG:[^:]*:(\d+)`)
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
322 )
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
323
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
324 func CRSToEPSG(s string) (int, error) {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
325 m := crsRe.FindStringSubmatch(s)
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
326 if m == nil {
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
327 return 0, ErrInvalidCRS
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
328 }
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
329 return strconv.Atoi(m[1])
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
330 }
2dc7768be0e4 Waterway axis import: More on reading data from WFS. TODO: Parse to concrete features.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1614
diff changeset
331
1596
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
332 func ParseCapabilities(r io.Reader) (*Capabilities, error) {
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
333
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
334 decoder := xml.NewDecoder(r)
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
335 decoder.CharsetReader = charset.NewReaderLabel
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
336
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
337 var capabilities Capabilities
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
338
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
339 if err := decoder.Decode(&capabilities); err != nil {
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
340 return nil, err
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
341 }
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
342
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
343 return &capabilities, nil
74413d52c439 Started with WFS Capabilities parser.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
344 }