gleojson

gleojson is a GeoJSON parsing and encoding library for Gleam, following the RFC 7946 specification. It provides types and utility functions to encode and decode GeoJSON objects such as Points, LineStrings, Polygons, and more.

Installation

Add gleojson to your Gleam project:

gleam add gleojson

Usage

pub fn main() {
  let json_string = "{
    \"type\": \"Feature\",
    \"geometry\": {
    \"type\": \"Point\",
    \"coordinates\": [125.6, 10.1]
    },
    \"properties\": {
    \"name\": \"Dinagat Islands\"
    }
  }"
  // Decode the JSON string into a GeoJSON object
  let result = json.decode(from: json_string, using: gleojson.geojson_decoder)
  case result {
    Ok(geojson) -> {
      // Successfully decoded GeoJSON
      let encoded = gleojson.encode_geojson(geojson)
      // encoded is now a Dynamic representation of the GeoJSON object
      // You can use it for further processing or encoding back to JSON
    }
    Error(errors) -> {
      todo
      // Handle decoding errors
      // errors contains information about what went wrong during decoding
    }
  }
}

Further documentation can be found at https://hexdocs.pm/gleojson.

Development

gleam build
gleam test