-
Notifications
You must be signed in to change notification settings - Fork 0
/
revgeocoder.js
154 lines (126 loc) · 4.02 KB
/
revgeocoder.js
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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
const endpoint = {
'revgeocode':'https://mreversegeocoder.gsi.go.jp/reverse-geocoder/LonLatToAddress',
'revyahoo':'https://www.sotalive.net/api/reverse-geocoder/LonLatToAddressMapCode',
'elevation':'https://cyberjapandata2.gsi.go.jp/general/dem/scripts/getelevation.php',
'muni' : 'https://www.sotalive.net/api/reverse-geocoder/LonLatMuniToAddress',
};
const cache_rev = new Map();
var use_yahoo_revgeocode = false;
async function local_reverse_geocoder(lat, lng, elev) {
if (use_yahoo_revgeocode)
return local_reverse_geocoder_yahoo(lat, lng, elev)
else
return local_reverse_geocoder_gsi(lat, lng, elev)
}
async function local_reverse_geocoder_gsi(lat, lng, elev) {
let pos = '?lat=' + String(lat) + '&lon=' + String(lng);
if (cache_rev.has(pos)) {
return cache_rev.get(pos);
}
if (cache_rev.size >= 16) {
const oldest = cache_rev.keys().next().value;
cache_rev.delete(oldest);
}
let rev_uri = endpoint['revgeocode'] + pos
let elev_uri = endpoint['elevation'] + pos + '&outtype=JSON'
let res_elev = null;
if (elev)
res_elev = local_get_elevation(lat, lng);
let res = await fetch(rev_uri);
res = await res.json();
let muni_uri =
endpoint['muni'] + pos;
if ('results' in res)
muni_uri += '&muni=' + res['results']['muniCd'];
muni_uri += '&addr=' + res['results']['lv01Nm'];
let res2 = await fetch(muni_uri);
let result = await res2.json()
if (result['errors'] == 'OK') {
result['addr1'] = res['results']['lv01Nm'];
if (elev) {
const p_elev = res_elev
.then(res => {
result['elevation'] = res['elevation']
result['hsrc'] = res['hsrc']
if (res['elevation'] == '-----')
result['errors'] = 'OUTSIDE_JA';
return Promise.resolve(result);});
cache_rev.set(pos, p_elev);
return p_elev;
} else {
const p_pos = Promise.resolve(result);
cache_rev.set(pos, p_pos);
return p_pos;
}
} else {
const p_err = Promise.resolve({'errors': 'OUTSIDE_JA',
'maidenhead': result['maidenhead']});
cache_rev.set(pos, p_err);
return p_err;
}
}
async function local_reverse_geocoder_yahoo(lat, lng, elev) {
let pos = '?lat=' + String(lat) + '&lon=' + String(lng);
if (cache_rev.has(pos)) {
return cache_rev.get(pos);
}
if (cache_rev.size >= 16) {
const oldest = cache_rev.keys().next().value;
cache_rev.delete(oldest);
}
let rev_uri = endpoint['revyahoo'] + pos
let elev_uri = endpoint['elevation'] + pos + '&outtype=JSON'
let res_elev = null;
if (elev)
res_elev = local_get_elevation(lat, lng);
let res = await fetch(rev_uri);
result = await res.json();
if (result['errors'] == 'OK') {
if (elev) {
const p_elev = res_elev
.then(res => {
result['elevation'] = res['elevation']
result['hsrc'] = res['hsrc']
if (res['elevation'] == '-----')
result['errors'] = 'OUTSIDE_JA';
return Promise.resolve(result);});
cache_rev.set(pos, p_elev);
return p_elev;
} else {
const p_pos = Promise.resolve(result);
cache_rev.set(pos, p_pos);
return p_pos;
}
} else {
const p_err = Promise.resolve({'errors': 'OUTSIDE_JA',
'maidenhead': result['maidenhead']});
cache_rev.set(pos, p_err);
return p_err;
}
}
const cache_elev = new Map();
async function local_get_elevation(lat, lng) {
let pos = '?lat=' + String(lat) + '&lon=' + String(lng);
let result = {};
if (cache_elev.has(pos)) {
return cache_elev.get(pos);
}
if (cache_elev.size >= 16) {
const oldest = cache_elev.keys().next().value;
cache_elev.delete(oldest);
}
let elev_uri = endpoint['elevation'] + pos + '&outtype=JSON';
let res_elev = fetch(elev_uri)
.then(res => res.json())
.then(res => {
result['elevation'] = res['elevation']
result['hsrc'] = res['hsrc']
if (res['elevation'] == '-----')
result['errors'] = 'OUTSIDE_JA';
else
result['errors'] = 'OK';
return result;
});
cache_elev.set(pos,res_elev);
return res_elev;
}