Mercurial > gemma

annotate pkg/controllers/shapestretches.go @ 5683:31973f6f5cca sr-v2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Get rid of deprecation warnings from staticcheck.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 11 Feb 2024 21:37:00 +0100
parents 5f47eeea988d
children 6270951dda28
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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) 2019 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 controllers
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15
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16 import (
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17 "archive/zip"
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18 "database/sql"
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19 "fmt"
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20 "io"
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21 "net/http"
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22 "os"
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23 "path/filepath"
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24 "strings"
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25 "time"
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26
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27 "github.com/gorilla/mux"
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28 "github.com/jonas-p/go-shp"
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29
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30 "gemma.intevation.de/gemma/pkg/config"
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31 "gemma.intevation.de/gemma/pkg/log"
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32 "gemma.intevation.de/gemma/pkg/middleware"
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33 "gemma.intevation.de/gemma/pkg/wkb"
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34 )
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35
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36 const (
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37 selectStretchSQL = `
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38 SELECT
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39 id,
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40 isrs_asText(lower(stretch)),
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41 isrs_asText(upper(stretch)),
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42 ST_AsBinary(area::geometry),
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43 objnam,
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44 nobjnam,
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45 date_info,
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46 source_organization
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47 FROM users.stretches WHERE
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48 staging_done AND
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49 name = $1`
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50
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51 selectStretchCountriesSQL = `
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52 SELECT country FROM users.stretch_countries
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53 WHERE stretch_id = $1
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54 ORDER BY country`
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55 )
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56
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57 func flattenPoints(mp wkb.MultiPolygonGeom) []shp.Point {
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58
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59 var n int
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60 for _, p := range mp {
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61 for _, r := range p {
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62 n += len(r)
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63 }
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64 }
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65
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66 ps := make([]shp.Point, n)
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67 var i int
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68 for _, p := range mp {
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69 for _, r := range p {
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70 for _, v := range r {
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71 ps[i].X = v.X
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72 ps[i].Y = v.Y
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73 i++
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74 }
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75 }
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76 }
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77
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78 return ps
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79 }
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80
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81 func asShpPolygon(mp wkb.MultiPolygonGeom) *shp.Polygon {
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82
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83 points := flattenPoints(mp)
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84
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85 var numParts int
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86 for _, pl := range mp {
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87 numParts += len(pl)
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88 }
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89
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90 p := &shp.Polygon{}
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91 p.NumParts = int32(numParts)
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92 p.NumPoints = int32(len(points))
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93 p.Parts = make([]int32, numParts)
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94
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95 var marker int32
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96 var i int
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97 for _, pl := range mp {
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98 for _, r := range pl {
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99 p.Parts[i] = marker
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100 i++
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101 marker += int32(len(r))
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102 }
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103 }
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104
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105 p.Points = points
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106 p.Box = shp.BBoxFromPoints(points)
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107 return p
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108 }
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109
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110 func stretchShapeDownload(rw http.ResponseWriter, req *http.Request) {
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111 vars := mux.Vars(req)
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112 name := vars["name"]
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113
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114 conn := middleware.GetDBConn(req)
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115 ctx := req.Context()
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116
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117 tx, err := conn.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
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118 if err != nil {
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119 http.Error(
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120 rw, fmt.Sprintf("DB error: %v.", err),
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121 http.StatusInternalServerError)
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122 return
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123 }
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
124 defer tx.Rollback()
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
125
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
126 var (
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
127 id int64
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
128 lower, upper string
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
129 data []byte
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
130 objnam string
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
131 nobjnam sql.NullString
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
132 dateInfo time.Time
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
133 source string
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
134 )
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
135
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
136 switch err := tx.QueryRowContext(ctx, selectStretchSQL, name).Scan(
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
137 &id,
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
138 &lower, &upper,
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
139 &data,
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
140 &objnam, &nobjnam,
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
141 &dateInfo,
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
142 &source,
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
143 ); {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
144 case err == sql.ErrNoRows:
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
145 http.NotFound(rw, req)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
146 return
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
147 case err != nil:
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
148 http.Error(
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
149 rw, fmt.Sprintf("DB error: %v.", err),
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
150 http.StatusInternalServerError)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
151 return
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
152 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
153
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
154 var countries []string
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
155
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
156 if err := func() error {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
157 rows, err := tx.Query(selectStretchCountriesSQL, id)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
158 if err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
159 return err
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
160 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
161 defer rows.Close()
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
162
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
163 for rows.Next() {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
164 var country string
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
165 if err := rows.Scan(&country); err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
166 return err
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
167 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
168 countries = append(countries, country)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
169 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
170
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
171 return rows.Err()
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
172 }(); err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
173 http.Error(
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
174 rw, fmt.Sprintf("DB error: %v.", err),
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
175 http.StatusInternalServerError)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
176 return
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
177 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
178
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
179 var geom wkb.MultiPolygonGeom
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
180
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
181 if err := geom.FromWKB(data); err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
182 http.Error(
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
183 rw, fmt.Sprintf("Decoding WKB error: %v.", err),
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
184 http.StatusInternalServerError)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
185 return
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
186 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
187
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
188 tmp := config.TmpDir()
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
189
5683
31973f6f5cca Get rid of deprecation warnings from staticcheck.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 5490
diff changeset
190 dir, err := os.MkdirTemp(tmp, "stretch-download")
4305
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
191 if err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
192 http.Error(
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
193 rw, fmt.Sprintf("Cannot create temp dir: %v.", err),
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
194 http.StatusInternalServerError)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
195 return
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
196 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
197 defer os.RemoveAll(dir)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
198
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
199 shpDir := filepath.Join(dir, "stretch")
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
200
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
201 if err := os.Mkdir(shpDir, os.ModePerm); err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
202 http.Error(
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
203 rw, fmt.Sprintf("Cannot create temp dir: %v.", err),
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
204 http.StatusInternalServerError)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
205 return
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
206 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
207
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
208 filename := filepath.Join(shpDir, "stretch")
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
209
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
210 if err := func() error {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
211 writer, err := shp.Create(filename, shp.POLYGON)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
212 if err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
213 return err
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
214 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
215 defer writer.Close()
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
216
4309
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
217 fields := []shp.Field{
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
218 shp.StringField("NAME", 50),
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
219 shp.StringField("OBJNAM", 50),
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
220 shp.StringField("NOBJNAM", 50),
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
221 shp.StringField("LOWER", 25),
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
222 shp.StringField("UPPER", 25),
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
223 shp.StringField("SOURCE", 50),
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
224 shp.StringField("DATEINFO", 25),
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
225 shp.StringField("COUNTRIES", 50),
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
226 }
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
227
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
228 writer.SetFields(fields)
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
229
4307
e5a831ecd557 Started to write multi polygon into shape file. [WIP]
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4305
diff changeset
230 p := asShpPolygon(geom)
e5a831ecd557 Started to write multi polygon into shape file. [WIP]
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4305
diff changeset
231
e5a831ecd557 Started to write multi polygon into shape file. [WIP]
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4305
diff changeset
232 writer.Write(p)
4305
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
233
4309
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
234 write := func(field int, v interface{}) {
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
235 if err == nil {
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
236 err = writer.WriteAttribute(0, field, v)
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
237 }
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
238 }
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
239
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
240 write(0, name)
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
241 write(1, objnam)
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
242 if nobjnam.Valid {
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
243 write(2, nobjnam.String)
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
244 }
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
245 write(3, lower)
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
246 write(4, upper)
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
247 write(5, source)
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
248 write(6, dateInfo.Format(time.RFC3339))
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
249 if len(countries) > 0 {
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
250 write(7, strings.Join(countries, ","))
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
251 }
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
252
78be85723eff stretch shape export: Write attributes, too.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4308
diff changeset
253 return err
4305
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
254 }(); err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
255 http.Error(
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
256 rw, fmt.Sprintf("creating shapefile failed: %v.", err),
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
257 http.StatusInternalServerError)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
258 return
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
259 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
260
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
261 entries, err := func() ([]os.FileInfo, error) {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
262 f, err := os.Open(shpDir)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
263 if err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
264 return nil, err
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
265 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
266 defer f.Close()
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
267 return f.Readdir(-1)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
268 }()
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
269 if err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
270 http.Error(
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
271 rw, fmt.Sprintf("cannot read directory: %v.", err),
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
272 http.StatusInternalServerError)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
273 return
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
274 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
275
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
276 rw.Header().Set("Content-Type", "application/zip")
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
277 rw.Header().Set("Content-Disposition", `attachment; filename="stretch.zip"`)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
278
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
279 zipfile := zip.NewWriter(rw)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
280 defer zipfile.Close()
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
281
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
282 now := time.Now()
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
283
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
284 base := filepath.Base(shpDir)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
285 for _, info := range entries {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
286 if !info.Mode().IsRegular() {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
287 continue
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
288 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
289 if err := func() error {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
290 srcFile, err := os.Open(filepath.Join(shpDir, info.Name()))
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
291 if err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
292 return err
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
293 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
294 defer srcFile.Close()
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
295 header := &zip.FileHeader{
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
296 Name: base + "/" + info.Name(),
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
297 Method: zip.Deflate,
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
298 Modified: now,
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
299 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
300 out, err := zipfile.CreateHeader(header)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
301 if err != nil {
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
302 return err
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
303 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
304 _, err = io.Copy(out, srcFile)
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
305 return err
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
306 }(); err != nil {
5490
5f47eeea988d Use own logging package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 4389
diff changeset
307 log.Errorf("cannot write file: %v\n", err)
4305
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
308 return
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
309 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
310 }
0f467a839fe2 Moved stretches as shape file download to separate file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
311 }