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use geojson::{de::deserialize_geometry, ser::serialize_geometry};
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 file_reader = BufReader::new(File::open("tests/fixtures/countries.geojson")?);
// Create a Vec of Country structs from the GeoJSON
let countries: Vec<Country> =
geojson::de::deserialize_feature_collection_to_vec::<Country>(file_reader)?;
assert_eq!(countries.len(), 180);
// Write the structs back to GeoJSON
let file_writer = BufWriter::new(File::create("example-output-countries.geojson")?);
geojson::ser::to_feature_collection_writer(file_writer, &countries)?;
Ok(())
}
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