sparse-geonames-search

search through sparse geonames data without downloading the whole archive

example

var { Transform, pipeline } = require('stream')
var fs = require('fs')
var path = require('path')
var dir = process.argv[2]

var cities = require('sparse-geonames-search')({
  read: (file,cb) => fs.readFile(path.join(dir,file),cb)
})
pipeline(
  cities.search(process.argv.slice(3).join(' ')),
  Transform({
    objectMode: true,
    transform: (row,enc,next) => next(null, JSON.stringify(row)+'\n')
  }),
  process.stdout,
  (err) => { if (err) console.error(err) }
)

usage

usage: sparse-geonames-search DIR [QUERY...]

Search for records matching QUERY based on the data located in DIR.

api

var search = require('sparse-geonames-search')

var s = search(opts)

Create a new instance s from:

• opts.read(file, cb) - read the complete contents of file, providing the result in cb(err, buf).

var stream = s.search(query)

Return a readable stream of geoname results in objectMode for geonames data matching the string query.

Each row from the stream has these fields:

• row.id
• row.name
• row.longitude
• row.latitude
• row.countryCode
• row.cc2
• row.admin1
• row.admin2
• row.admin3
• row.admin4
• row.population
• row.elevation

s.getRecord(id, cb)

Get a record by its id as cb(err, record).

install

npm install sparse-geonames-search

license

bsd