Geocoder

Rust crate that provides an easy way to use the Google Geocoding API.

See more information about the Google Geocoding API at the following link: Google Geocoding API

Installation

Add this to your Cargo.toml:

[dependencies]
geocoder = "0.1.2"

Usage

Example of usage:

use geocoder::Geocoder;
use std::env;

#[tokio::main]
async fn main() {
    // Set your API key as an environment variable.
    let api_key = env::var("GEOCODER_API_KEY").expect("GEOCODER_API_KEY must be set");

    // Create a new Geocoder instance.
    let geocoder = Geocoder::new(&api_key);

    // Geocode an address to a location (latitude, longitude).
    match geocoder.geocode("1600 Amphitheatre Parkway, Mountain View, CA").await {
        Ok(address) => {
            println!("Formatted address: {}", address.formatted_address);
        }
        Err(e) => eprintln!("Error: {}", e),
    }
}

Examples

Convert an address to a latitude and longitude:

use geocoder::Geocoder;
use std::env;

#[tokio::main]
async fn main() {
    let api_key = env::var("GEOCODER_API_KEY").expect("GEOCODER_API_KEY must be set");
    let geocoder = Geocoder::new(&api_key);
    match geocoder.geocode("1600 Amphitheatre Parkway, Mountain View, CA").await {
        Ok(address) => {
            println!("Formatted address: {}", address.formatted_address);
            println!("Latitude: {}", address.geometry.location.lat);
            println!("Longitude: {}", address.geometry.location.lng);
        }
        Err(e) => eprintln!("Error: {}", e),
    }
}

Reverse Geocoding Convert a latitude and longitude to an address:

use geocoder::{Geocoder, structs::LatLng};
use std::env;

#[tokio::main]
async fn main() {
    let api_key = env::var("GEOCODER_API_KEY").expect("GEOCODER_API_KEY must be set");
    let geocoder = Geocoder::new(&api_key);
    let location = LatLng { lat: 37.4224764, lng: -122.0842499 };
    match geocoder.reverse_geocode(location).await {
        Ok(addresses) => {
            if let Some(address) = addresses.first() {
                println!("Formatted address: {}", address.formatted_address);
            }
        }
        Err(e) => eprintln!("Error: {}", e),
    }
}

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contributing

1. Create an issue (optional)
2. Fork the repo
3. Make your changes
4. Commit your changes (git commit -am 'Some cool feature')
5. Push to the branch (git push origin master)
6. Create a new Pull Request

Using async functions

With a little more effort you can use async functions with tokio:

use geocoder::Geocoder;
use std::env;
use tokio::task;

async fn geocode_address(geocoder: Geocoder, address: &str) {
    match geocoder.geocode(address).await {
        Ok(result) => {
            println!("Formatted address: {}", result.formatted_address);
        }
        Err(e) => eprintln!("Error: {}", e),
    }
}

#[tokio::main]
async fn main() {
    let api_key = env::var("GEOCODER_API_KEY").expect("GEOCODER_API_KEY must be set");
    let geocoder = Geocoder::new(&api_key);
    let address = "1600 Amphitheatre Parkway, Mountain View, CA";

    let handle = task::spawn(async move {
        geocode_address(geocoder, address).await;
    });

    handle.await.unwrap();
}