/
main.go
91 lines (84 loc) · 1.6 KB
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
package main
import (
"fmt"
"github.com/cheggaaa/pb"
"github.com/qedus/osmpbf"
"github.com/gaffo/goosm"
"io"
"log"
"os"
_ "runtime"
)
func main() {
f, err := os.Open("washington-latest.osm.pbf")
if err != nil {
log.Fatal(err)
os.Exit(1)
}
defer f.Close()
o, err := os.Create("washington-latest-highway.osm")
if err != nil {
log.Fatal(err)
os.Exit(1)
}
osm := goosm.NewOsm()
stat, _ := f.Stat()
size := stat.Size()
bar := pb.New64(size).SetUnits(pb.U_BYTES)
bar.ShowSpeed = true
bar.Start()
d := osmpbf.NewDecoder(bar.NewProxyReader(f))
err = d.Start(1)
if err != nil {
log.Fatal(err)
os.Exit(1)
}
var nc, wc, rc uint64
for {
if v, err := d.Decode(); err == io.EOF {
break
} else if err != nil {
log.Fatal(err)
} else {
switch t := v.(type) {
case *osmpbf.Node:
n := v.(*osmpbf.Node)
for k, _ := range n.Tags {
if k == "highway" {
osm.AppendNode(goosm.Node{
Id: fmt.Sprintf("%d", n.ID),
Lat: n.Lat,
Lon: n.Lon,
Visible: n.Info.Visible})
}
}
// Process Node v.
nc++
case *osmpbf.Way:
n := v.(*osmpbf.Way)
for k, _ := range n.Tags {
if k == "highway" {
way := goosm.NewWay()
for _, nd := range n.NodeIDs {
way.AppendNd(string(nd))
}
osm.AppendWay(*way)
wc++
}
}
case *osmpbf.Relation:
n := v.(*osmpbf.Relation)
for k, _ := range n.Tags {
if k == "highway" {
rc++
}
}
default:
log.Fatalf("unknown type %T\n", t)
}
}
}
fmt.Println()
fmt.Printf("Nodes: %d, Ways: %d, Relations: %d\n", nc, wc, rc)
osm.Write(o)
}