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
|
use geojson::{de::deserialize_geometry, ser::serialize_geometry, FeatureReader, FeatureWriter};
use serde::{Deserialize, Serialize};
use std::error::Error;
use std::fs::File;
use std::io::{BufReader, BufWriter};
#[cfg(not(feature = "geo-types"))]
fn main() -> Result<(), Box<dyn Error>> {
panic!("this example requires geo-types")
}
#[cfg(feature = "geo-types")]
fn main() -> Result<(), Box<dyn Error>> {
#[derive(Serialize, Deserialize)]
struct Country {
#[serde(
serialize_with = "serialize_geometry",
deserialize_with = "deserialize_geometry"
)]
geometry: geo_types::Geometry,
name: String,
}
let reader = {
let file_reader = BufReader::new(File::open("tests/fixtures/countries.geojson")?);
FeatureReader::from_reader(file_reader)
};
let mut writer = {
let file_writer = BufWriter::new(File::create("example-output-countries.geojson")?);
FeatureWriter::from_writer(file_writer)
};
let mut country_count = 0;
for country in reader.deserialize::<Country>()? {
let country = country?;
country_count += 1;
writer.serialize(&country)?;
}
assert_eq!(country_count, 180);
Ok(())
}
|
