gis-tools-ts/dist/readers/osm/mmap.js

A collection of geospatial tools primarily designed for WGS84, Web Mercator, and S2.

import { OSMReader } from '.';
import { MMapKV, MMapReader } from '../../mmap';
/**
 * # OSM MMap Reader
 *
 * ## Description
 * Parses OSM PBF files
 * Implements the {@link FeatureIterator} interface
 *
 * ## Usage
 * ```ts
 * import { OSMMMapReader } from 'gis-tools-ts/mmap';
 *
 * const reader = new OSMMMapReader('./data.osm.pbf');
 *
 * // pull out the header
 * const header = reader.getHeader();
 *
 * // read the features
 * for (const feature of reader) {
 *   console.log(feature);
 * }
 *
 * // close the reader when done
 * reader.close();
 * ```
 *
 * ## Links
 * - https://wiki.openstreetmap.org/wiki/PBF_Format
 * - https://github.com/openstreetmap/pbf/blob/master/OSM-binary.md
 */
export class OSMMMapReader extends OSMReader {
    options;
    /**
     * @param input - The input (may be a local memory filter or file reader)
     * @param options - User defined options to apply when reading the OSM file
     */
    constructor(input, options) {
        const fileReader = new MMapReader(input);
        super(fileReader, options);
        this.options = options;
        this.nodeGeometry = new MMapKV();
        this.nodes = new MMapKV();
        this.wayGeometry = new MMapKV();
        this.ways = new MMapKV();
        this.relations = new MMapKV();
        this.nodeRelationPairs = new MMapKV();
    }
}
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