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
|
// imports
var http = require('http'),
querystring = require('querystring'),
pg = require('pg'),
url = require('url'),
querystring = require('querystring');
// config
var connectionString = "pg://yves:test@localhost/xapi"
function getDataBaseResult(tag,bbox,res){
pg.connect(connectionString,function(err,client){
var the_result;
if(err){
console.log(err);
} else {
client.query(createQuery(tag,bbox),function(err,result){
if (err) {
console.log(err);
} else {
console.log(result);
res.write(result.rows);
res.end("/n");
}
});
}
});
}
function createQuery(tag,bbox){
// FIXME: validate
var table = tag[0] + "#" + tag[1];
var filter = "";
// input validation
for(i=0;i<bbox.length;i++){
bbox[i] = parseFloat(bbox[i]);
}
if(bbox){
filter = "WHERE longitude > " + bbox[0] + " AND longitude < " + bbox[1] +
" AND latitude > " + bbox[2] + " AND latitude < " + bbox[3];
}
return "SELECT * FROM \"" + table + "\" " + filter + ";";
}
RegExp.escape= function(s) {
return s.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&')
};
var PATH_PREFIX = '/api/';
var base_url_re = new RegExp('^' + RegExp.escape(PATH_PREFIX) +
'(node|way|relation|\\*)(.*)$')
var filter_re = /\[(\w+=[^\]]+)\]/g;
http.createServer(function (req, res) {
if (!base_url_re.test(req.url)) {
res.writeHead(404, {'Content-Type': 'text/plain; charset=utf8'});
res.end('Not Found\n');
}
base_url_re.exec(req.url);
var type = RegExp.$1, url_rest = querystring.unescape(RegExp.$2);
var filters = [];
while (v = filter_re.exec(url_rest)) {
filters.push(v[1]);
}
console.log(filters);
var tag;
var bbox;
for(i=0;i<filters.length;i++){
filters[i]=filters[i].split(/=/);
if(filters[i][0]=="bbox"){
bbox = filters[i][1].split(/,/);
}
else {
tag = filters[i];
}
}
console.log(tag);
console.log(bbox);
getDataBaseResult(tag,bbox,res);
res.writeHead(200, {'Content-Type': 'text/plain; charset=utf8', });
res.write('URL was: ' + req.url + '\n');
res.write('type: ' + type + '\n');
res.write('filters:\n');
filters.forEach(function(x) { res.write(' ' + x + '\n'); })
//res.end('\n');
}).listen(8124, "127.0.0.1");
console.log('Listening on http://127.0.0.1:8124/')
|