Crate oxigdal_geojson 

OxiGDAL GeoJSON Driver - RFC 7946 Implementation

This crate provides a pure Rust implementation of GeoJSON (RFC 7946) reading and writing for the OxiGDAL ecosystem. It supports all geometry types, features, feature collections, and coordinate reference systems.

Features

• Full RFC 7946 compliance
• Support for all geometry types (Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon, GeometryCollection)
• Feature and FeatureCollection support
• CRS (Coordinate Reference System) handling
• Streaming reader for large files
• Efficient writer with customizable formatting
• Comprehensive validation
• Zero-copy optimizations where possible
• No unwrap() or panic!() in production code

Example

use oxigdal_geojson::{GeoJsonReader, GeoJsonWriter, FeatureCollection};
use std::fs::File;
use std::io::{BufReader, BufWriter};

// Reading GeoJSON
let file = File::open(&input_path)?;
let reader = BufReader::new(file);
let mut geojson_reader = GeoJsonReader::new(reader);
let feature_collection = geojson_reader.read_feature_collection()?;

// Writing GeoJSON
let file = File::create(&output_path)?;
let writer = BufWriter::new(file);
let mut geojson_writer = GeoJsonWriter::new(writer);
geojson_writer.write_feature_collection(&feature_collection)?;

RFC 7946 Compliance

This implementation follows RFC 7946 strictly:

• Right-hand rule for polygon orientation
• WGS84 as default CRS (EPSG:4326)
• Longitude-latitude order for coordinates
• Validation of geometry topologies
• Support for bounding boxes
• Foreign members preserved during round-trip

Performance

• Streaming API for large files (O(1) memory for features)
• Zero-copy deserialization where possible
• Efficient buffering and I/O
• Parallel processing support (with async feature)

COOLJAPAN Policies

• Pure Rust implementation (no C/C++ dependencies)
• No unwrap() or expect() in production code
• Comprehensive error handling
• Extensive testing (unit + integration + property-based)
• Clean API design following Rust idioms

Re-exports

pub use error::GeoJsonError;

pub use error::Result;

pub use reader::GeoJsonReader;

pub use types::Coordinate;

pub use types::CoordinateSequence;

pub use types::Crs;

pub use types::Feature;

pub use types::FeatureCollection;

pub use types::Geometry;

pub use types::GeometryType;

pub use types::Position;

pub use types::Properties;

pub use validation::Validator;

pub use writer::GeoJsonWriter;

Modules

error

Error types for GeoJSON operations

reader

GeoJSON reader implementation

types

GeoJSON type definitions

utils

Utility modules for GeoJSON operations

validation

RFC 7946 validation utilities

writer

GeoJSON writer implementation

Constants

DEFAULT_CRS

Default CRS for GeoJSON (WGS84)

FILE_EXTENSION

GeoJSON file extension

MIME_TYPE

GeoJSON MIME type

NAME

Crate name

VERSION

Crate version